JP2017154987A - Oxidant-containing composition, hair treatment agent, method of using hair treatment agent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide oxidant-containing composition by which the viscosity of a mixture is significantly reduced when it is mixed to a first agent with high viscosity.SOLUTION: Provided is an oxidant-containing composition which has a viscosity at 25°C of 100 to 10000 mPa s and contains (A-1) a surfactant having a sterol backbone or (A-2) a surfactant having a lipophilic group derived from lanolin, in an oxidant-containing composition utilized as a second agent of a multi-agent type hair treatment agent. By mixing this oxidant-containing composition with the first agent having high viscosity, the viscosity of the mixture can be significantly lowered.SELECTED DRAWING: None

Description

  The present invention relates to an oxidizing agent-containing composition containing an oxidizing agent. More specifically, the present invention is an oxidizing agent-containing composition used as a second agent of a multi-component hair treatment agent such as a hair bleaching agent, a hair bleaching agent or an oxidative hair dye, which contains an alkaline agent. It is related with the oxidizing agent composition which reduces the viscosity of a mixture, when mixing with the 1st agent to do. In addition, the present invention is a method for using a multi-component hair treatment agent such as a hair bleaching agent, a hair bleaching agent or an oxidative hair dye.

  As a hair treatment agent for decoloring, decoloring or dyeing hair, a two-component hair decoloring agent, a hair decoloring agent or an oxidative hair comprising a first agent containing an alkaline agent and a second agent containing an oxidizing agent Agents are known.

  In the two-component hair treatment agent, it is required to set the viscosity of the first agent to be high in order to enhance the dispersion stability of materials having low dispersibility such as dyes and oil agents. On the other hand, the viscosity of the mixture obtained by mixing the first agent and the second agent is desirably low viscosity in order to improve applicability to hair. Therefore, the viscosity of the hair treatment agent is lowered by mixing the low viscosity second agent with the high viscosity first agent.

In Patent Document 1, as a technique for improving the mixing property of a high viscosity first agent and a low viscosity second agent, the viscosity of the first agent at 25 ° C. is 5000 to 40000 mPa · s, and the second agent is 25 ° C. Further, a hair treatment agent having a viscosity of 100 to 6000 mPa · s and further containing a higher fatty acid, an amphoteric surfactant, and an alkyl glycoside as a second agent is disclosed.
According to this hair treatment agent, a high viscosity first agent and a low viscosity second agent can be easily mixed by simply shaking in a container.

International Publication No. 2015/119019

In a hair treatment agent in which a high viscosity first agent and a low viscosity second agent are mixed, a further reduction in viscosity is required in order to improve applicability to hair.
Therefore, an object of the present invention is to provide an oxidizing agent-containing composition that lowers the viscosity of the mixture when mixed with the first agent having a high viscosity in the oxidizing agent-containing composition used as the second agent of the hair treatment agent. Is to provide.

As a result of intensive studies on the above problems, the present inventor has obtained a surfactant having a sterol skeleton or a lipophilic group derived from lanolin in an oxidizing agent-containing composition used as the second agent of a multi-agent hair treatment agent. It was found that the viscosity of the mixture was significantly reduced when it was mixed with the first agent having a high viscosity by containing a surfactant having the following.
That is, this invention is the usage method of the following oxidizing agent containing compositions, hair treatment agents, and hair treatment agents.

The oxidizing agent-containing composition of the present invention for solving the above problems is an oxidizing agent-containing composition used as the second agent of a multi-component hair treatment agent, and has a viscosity at 25 ° C. of 100 to 10,000 mPa · s. And (A-1) a surfactant having a sterol skeleton or (A-2) a surfactant having a lipophilic group derived from lanolin.
According to the oxidizing agent-containing composition of the present invention, the viscosity of the mixture can be remarkably lowered when mixed with the high viscosity first agent. Moreover, the oxidizing agent containing composition of this invention is excellent also in the mixability with a 1st agent.

Furthermore, as one embodiment of the oxidizing agent-containing composition of the present invention, (B) a nonionic surfactant (provided that (A-1) a surfactant having a sterol skeleton and (A-2) a parent derived from lanolin are used. The surfactant having an oil group is excluded.Hereinafter, it is simply referred to as “(B) nonionic surfactant”) or (C) a cationic surfactant.
(B) By containing a nonionic surfactant, the change of the viscosity at the time of preservation | save of an oxidizing agent containing composition can be suppressed.
Furthermore, the hair feel can be improved by containing (C) a cationic surfactant.

The hair treatment agent of the present invention for solving the above problems is a hair treatment agent comprising a first agent containing an alkaline agent and a second agent containing an oxidizing agent, wherein the first agent is at 25 ° C. A viscosity is 5000-50000 mPa * s, The said 2nd agent is an oxidizing agent containing composition mentioned above, and has a viscosity lower than the viscosity of the said 1st agent, It is characterized by the above-mentioned.
According to the hair treatment agent of the present invention, since the viscosity of the first agent is high, a material having low dispersibility such as a dye can be stably dispersed in the first agent. Furthermore, since the oxidant-containing composition of the present invention described above is used as the second agent, a hair treatment agent having a reduced viscosity can be provided.

Furthermore, as one embodiment of the hair treatment agent of this invention, it has the characteristic of containing carbonate or a sulfate.
According to this feature, there is an effect of further reducing the viscosity of the mixture of the first agent and the second agent and an effect of suppressing a change in the viscosity of the mixture of the first agent and the second agent over time.

Furthermore, as one embodiment of the hair treatment agent of this invention, it has the characteristics that the viscosity in 25 degreeC of the hair treatment agent after mixing a 1st agent and a 2nd agent is 1000-20000 mPa * s.
According to this feature, it is possible to provide a hair treatment agent having excellent operability in both the application and hand application operations using tools such as brushes and combs.
Moreover, by setting it as the viscosity of 1000 mPa * s or more, it also has the effect of suppressing dripping after application to hair.

Furthermore, as one embodiment of the hair treatment agent of this invention, it has the characteristics that a hair treatment agent is used for pre-dyed hair.
The pre-dyed hair is hair that has been treated with a hair dye, a decoloring agent, or a decoloring agent in the past and has some damage. When a strong tensile stress is applied, further damage such as breakage is likely to occur.
When a highly viscous hair treatment agent is applied to the already-dyed hair, a strong tensile stress is generated by an application operation such as brushing or hand coating, which causes a problem such as breakage. On the other hand, in the hair treatment agent of the present invention, since the viscosity can be kept low, the tensile stress generated during the application operation such as brush coating and hand coating becomes weak, and further damage to the already-dyed hair occurs. Can be suppressed.

The method for using the hair treatment agent of the present invention for solving the above-described problems includes the following steps 1 and 2.
Step 1:
A first agent containing an alkaline agent,
A first agent having a viscosity of 5000 to 50000 mPa · s at 25 ° C .;
A second agent containing an oxidizing agent,
(A-1) A surfactant having a sterol skeleton, or
(A-2) containing a surfactant having a lipophilic group derived from lanolin,
Step 2 for preparing a hair treatment agent by mixing a second agent having a viscosity at 25 ° C. of 100 to 10,000 mPa · s and having a viscosity lower than that of the first agent:
Applying the hair treatment agent to the hair

According to the method of using the hair treatment agent of the present invention, a low-viscosity hair treatment agent can be prepared. Therefore, in the step of applying the hair treatment agent in step 2 to the hair, the tensile stress on the hair is suppressed, and the hair This has the effect of reducing damage to the body. Furthermore, there is an effect that it is easy to apply from the root of the hair to the end of the hair.
Moreover, according to the usage method of the hair treatment agent of this invention, since a hair treatment agent can be mixed easily, the operation | work which concerns on preparation of a hair treatment agent can also be reduced.

  According to the present invention, it is possible to provide an oxidizing agent-containing composition that significantly reduces the viscosity of a mixture when mixed with a first agent having a high viscosity.

Hereinafter, the oxidizing agent-containing composition of the present invention will be described in detail.
[About oxidizing agent-containing composition]
The oxidant-containing composition of the present invention has a viscosity at 25 ° C. of 100 to 10,000 mPa · s, and is derived from an oxidant and (A-1) a surfactant having a sterol skeleton, or (A-2) lanolin. It contains a surfactant having a lipophilic group and is used as the second agent of a multi-component hair treatment agent.

The viscosity at 25 ° C. of the oxidizing agent-containing composition of the present invention is 100 to 10000 mPa · s, preferably 100 to 7000 mPa · s, more preferably 100 to 6000 mPa · s, and particularly preferably 100 to 10000 mPa · s. 5000 mPa · s. By setting the viscosity to 100 to 10,000 mPa · s, there is an effect of reducing the viscosity of the mixture when mixed with the first agent.
The viscosity is measured at 25 ° C. using a B-type viscometer (TV-10, manufactured by Toki Sangyo Co.). When the viscosity is in the range of 1000 to 10,000 mPa · s, the measurement is performed under conditions of rotor No. 3, 12 rpm, and 1 minute. When the viscosity is less than 1000 mPa · s under the conditions of rotor No. 3, 12 rpm, and 1 minute, the viscosity adopts the result measured under the conditions of rotor No. 2, 30 rpm and 1 minute. When the viscosity exceeds 10,000 mPa · s under the conditions of rotor No. 3, 12 rpm and 1 minute, the result measured under the conditions of rotor No. 4, 12 rpm and 1 minute is adopted. In the present invention, all viscosity measurement methods are performed according to this method.

Any form may be sufficient as the form of the oxidizing agent containing composition of this invention, For example, a liquid, an emulsion, a cream, a gel etc. are mentioned. In the case of containing an oil component, the O / W type, W / O type, W / O / W type and the like are not particularly limited, but an O / W type emulsion is preferable.
Furthermore, it is good also as foam form or mist form at the time of use. In the case of foaming, an aerosol former container or a non-aerosol foamer container may be used.

Next, each component contained in the oxidizing agent-containing composition of the present invention will be described in detail.
The oxidizing agent is not particularly limited as long as it is a substance having oxidizing power. Examples of oxidizing agents include hydrogen peroxide, urea peroxide, melamine peroxide, sodium percarbonate, potassium percarbonate, sodium perborate, potassium perborate, ammonium persulfate, sodium peroxide, potassium peroxide, magnesium peroxide, Examples thereof include barium peroxide, calcium peroxide, strontium peroxide, sulfate hydrogen peroxide adduct, phosphate hydrogen peroxide adduct, pyrophosphate hydrogen peroxide adduct, and the like. Examples of the oxidation aid include persulfates such as ammonium persulfate, potassium persulfate, and sodium persulfate. Among these, hydrogen peroxide is preferable.

  Although content of the oxidizing agent in an oxidizing agent containing composition is not specifically limited, For example, it is 0.1-15 mass%, More preferably, it is 2-9 mass%. When hydrogen peroxide is contained as an oxidizing agent, ethylene glycol phenyl ether (phenoxyethanol), hydroxyethanediphosphonic acid, phosphoric acid, citric acid, or a salt thereof is added as a stabilizer for improving the stability. Is preferred.

(A-1) Surfactant having a sterol skeleton A surfactant having a sterol skeleton is a surfactant having a sterol skeleton as a lipophilic group.
A sterol skeleton is an alcohol in which a hydroxy group is bonded to a cyclopentahydrophenanthrene ring represented by the following formula 1, and a surfactant having a sterol skeleton is a compound in which a hydrophilic group is bonded to the sterol skeleton. In addition, the symbols A to D in the following formula 1 represent each ring constituting the cyclopentahydrophenanthrene ring, and the numbers represent the position numbers of carbon constituting the cyclopentahydrophenanthrene ring.

  The lipophilic sterol skeleton may have a double bond in the cyclopentahydrophenanthrene ring, and the position at which the hydroxyl group is bonded is not particularly limited. Preferably, a sterol having a hydroxy group bonded to the C-3 position and having a double bond to the B ring, or a stanol having a hydroxy group bonded to the C-3 position and composed of a saturated ring It is.

  Examples of the sterol skeleton include phytosterols such as β-sitosterol, campesterol, stigmasterol, and brassicasterol, or stanols thereof, cholesterol, cholestanol, lanosterol, ergosterol, and the like. Preferable are phytosterols and phytostanols.

On the other hand, the hydrophilic group may have any structure. For example, nonionic hydrophilic groups such as POE chain, polyglycerin, polyglucoside, sorbitan, sucrose, carboxylate, sulfonate, sulfate, phosphorus Anionic hydrophilic groups such as acid salts, and cationic hydrophilic groups such as aliphatic amine salts and quaternary ammonium salts. The hydrophilic group is preferably a nonionic hydrophilic group, and particularly preferably a POE chain.
The number of added moles of the POE chain is not particularly limited, but is preferably 50 or less, more preferably 40 or less, still more preferably 30 or less, and particularly preferably 23 or less. When the added mole number of the POE chain is reduced, the change rate of the viscosity with time of the oxidizing agent-containing composition is reduced, and the storage stability is excellent.
Moreover, from the viewpoint of the effect of reducing the viscosity of the mixture, the number of added moles of the POE chain is preferably 5 or more, more preferably 10 or more, and further preferably 15 or more.
POE represents a polyoxyethylene chain, POP represents a polyoxypropylene chain, and the numbers in parentheses following this indicate the number of moles added. The same applies to the following notation.

  The HLB of the surfactant having a sterol skeleton is not particularly limited, but is preferably 8 or more, more preferably 10 or more, and particularly preferably 13 or more. In addition, the measurement of HLB is measured by the “20.3.1 emulsion measurement method” described in “Handbook-Cosmetics / Formulation raw materials-Revised edition (issued on February 1, 1977, Nikko Chemicals Co., Ltd.)”. ”(Pages 854 to 855). Hereinafter, in this specification, the measuring method of HLB is based on this method.

  Specific examples of the surfactant having a sterol skeleton include POE phytosterol, POE phytostanol, POE cholesterol, and POE cholestanol. POE phytosterol and POE phytostanol are preferred. From the viewpoint of storage stability, POE phytosterol is particularly preferable.

  The content of the surfactant having a sterol skeleton in the oxidant-containing composition is not particularly limited, but is preferably 0.001 to 10% by mass, more preferably 0.01 to 5% by mass, and particularly preferably. Is 0.05-3 mass%.

(A-2) Surfactant having lipophilic group derived from lanolin The surfactant having a lipophilic group derived from lanolin is a surfactant having a lanolin derivative as the lipophilic group.
The lanolin derivative is a substance obtained by hydrolysis, hydrogenation, alkoxylation or the like using lanolin as a starting material, and the surfactant of the lanolin derivative is a substance in which a hydrophilic group is bonded to the lanolin derivative. Moreover, the substance which has surface active ability may be sufficient as lanolin derivative itself like lanolin fatty acid potassium and lanolin fatty acid sodium.

The hydrophilic group bonded to the lanolin derivative may have any structure, for example, nonionic hydrophilic groups such as POE chain, polyglycerin, polyglucoside, sorbitan, sucrose, carboxylate, sulfonate, sulfate, etc. Examples include anionic hydrophilic groups such as salts and phosphates, and cationic hydrophilic groups such as aliphatic amine salts and quaternary ammonium salts. The hydrophilic group is preferably a nonionic hydrophilic group, and particularly preferably a POE chain.
The number of added moles of the POE chain is not particularly limited, but is preferably 2 to 50, more preferably 10 to 40.

  Further, the HLB of the surfactant having a lanolin-derived lipophilic group is not particularly limited, but is preferably 8 or more, more preferably 10 or more, and particularly preferably 13 or more.

  Specific examples of the surfactant having a lipophilic group derived from lanolin include POE lanolin, POE reduced lanolin, POE lanolin alcohol, lanolin fatty acid potassium, and lanolin fatty acid sodium. From the viewpoint that the rate of change in viscosity with time of the oxidizing agent-containing composition is small and excellent in storage stability, POE lanolin, POE reduced lanolin, and POE lanolin alcohol are preferable, and POE reduced lanolin is particularly preferable. is there.

  The content of the surfactant having a lanolin-derived lipophilic group in the oxidizing agent-containing composition is not particularly limited, but is preferably 0.001 to 10% by mass, and more preferably 0.005 to 5% by mass. Yes, and particularly preferably 0.01 to 3% by mass.

By containing (A-1) a surfactant having a sterol skeleton, or (A-2) a surfactant having a lipophilic group derived from lanolin in the oxidizing agent-containing composition, When mixed, it is possible to provide a hair treatment agent that has the effect of lowering the viscosity of the mixture and is excellent in applicability.
Furthermore, by using together (A-1) a surfactant having a sterol skeleton and (A-2) a surfactant having a lipophilic group derived from lanolin, the viscosity over time of the oxidizing agent-containing composition is obtained. Therefore, it is possible to provide an oxidizing agent-containing composition that is excellent in storage stability.

(B) Nonionic surfactant As one embodiment of the oxidizing agent-containing composition of the present invention, (A-1) a surfactant having a sterol skeleton, and (A-2) a lipophilic group derived from lanolin. You may contain (B) nonionic surfactants other than the surfactant which has. (B) By containing a nonionic surfactant, the change of the viscosity at the time of preservation | save of an oxidizing agent containing composition can be suppressed.

  (B) Nonionic surfactants include POE alkyl ethers, POE alkyl phenyl ethers, POE / POP alkyl ethers, POE sorbitan fatty acid esters, POE mono fatty acid esters, POE glycerin fatty acid esters, polyglycerin fatty acid Examples include esters, monoglycerin fatty acid esters, sorbitan fatty acid esters, sucrose fatty acid esters, alkylpolyglucosides, and the like. Specific examples of POE alkyl ethers include POE lauryl ether, POE cetyl ether, POE stearyl ether, and POE behenyl ether.

  (B) It is preferable to mix a nonionic surfactant with an HLB of 10 or less. Specific examples of nonionic surfactants having an HLB of 10 or less include, for example, POE (2) lauryl ether, POE (4) stearyl ether, POP (4) cetyl ether, monostearic acid POE (5) glyceryl, POE (2) ) Stearyl ether, POE (2) cetyl ether and the like. Particularly preferred are POE alkyl ethers having an HLB of 10 or less.

  Although content of (B) nonionic surfactant in an oxidizing agent containing composition is not specifically limited, Preferably it is 0.001-40 mass%, More preferably, it is 0.01-30 mass%, Especially Preferably it is 0.05-20 mass%.

(C) Cationic surfactant As one embodiment of the oxidizing agent-containing composition of the present invention, (C) a cationic surfactant may be contained. (C) Hair feel can be improved by containing a cationic surfactant.

A cationic surfactant is a surfactant in which a hydrophilic group that dissolves in water and ionically dissociates becomes a cation.
For example, monoalkyl type quaternary ammonium salts, dialkyl type quaternary ammonium salts, trialkyl type quaternary ammonium salts, benzalkonium type quaternary ammonium salts, alkyl quaternary ammonium salts such as monoalkyl ether type quaternary ammonium salts, Examples include alkylamine salts, fatty acid amidoamine salts, amine salts such as ester-containing tertiary amine salts, archebel type tertiary amine salts, cyclic quaternary ammonium salts such as alkylpyridinium salts and alkylisoquinolinium salts, and benzethonium chloride. .

  Alkyl quaternary ammonium salts are preferable, monoalkyl quaternary ammonium salts and dialkyl quaternary ammonium salts are more preferable, and monoalkyl quaternary ammonium salts are particularly preferable.

Examples of monoalkyl type quaternary ammonium salts include lauryl trimethyl ammonium chloride, lauryl trimethyl ammonium bromide, alkyl (16,18) trimethyl ammonium chloride, cetyl trimethyl ammonium chloride, cetyl trimethyl ammonium bromide, cetyl trimethyl ammonium saccharin, chloride Stearyltrimethylammonium, stearyltrimethylammonium bromide, behenyltrimethylammonium chloride, stearyltrimethylammonium saccharin, alkyl chloride (28) trimethylammonium chloride, diPOE (2) oleylmethylammonium chloride, diPOE stearylmethylammonium chloride, POE (1) POP (25) diethylmethylammonium chloride, POP methyldiethylammonium chloride, salt Methacryloyloxyethyl trimethyl ammonium, and the like methylsulfate behenyl trimethyl ammonium. Particularly preferred are stearyltrimethylammonium chloride, alkyl (16,18) trimethylammonium chloride, and cetyltrimethylammonium chloride.
The numbers in parentheses following alkyl indicate the number of carbon atoms in the fatty acid chain. The same applies to the following notation.

  Examples of the dialkyl type quaternary ammonium salt include dialkyl chloride (12-15) dimethylammonium chloride, dialkyl chloride (12-18) dimethylammonium, dialkyl chloride (14-18) dimethylammonium, dicocoyldimethylammonium chloride, dicetyl chloride. Examples include dimethyl ammonium, distearyl dimethyl ammonium chloride, and isostearyl lauryl dimethyl ammonium chloride.

  Although content of the cationic surfactant in an oxidizing agent containing composition is not specifically limited, Preferably it is 0.001-10 mass%, More preferably, it is 0.01-5 mass%, Most preferably, it is 0. 0.05 to 3% by mass.

Other surfactants The oxidizing agent-containing composition of the present invention includes (A-1) a surfactant having a sterol skeleton, (A-2) a surfactant having a lipophilic group derived from lanolin, (B You may mix | blend surfactants other than nonionic surfactant and (C) cationic surfactant.
Examples of other surfactants include anionic surfactants and amphoteric surfactants.

Anionic surfactant As anionic surfactant , alkyl ether sulfate, POE alkyl ether sulfate, alkyl sulfate, alkenyl ether sulfate, alkenyl sulfate, olefin sulfonate, alkane sulfonate, saturated or unsaturated Examples include fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfone fatty acid salts, N-acyl amino acid type surfactants, phosphate mono- or diester type surfactants, and sulfosuccinates. The counter ion of the anionic group of these surfactants may be any of sodium ion, potassium ion, and triethanolamine, for example.

  More specifically, sodium lauryl sulfate, sodium myristyl sulfate, potassium lauryl sulfate, ammonium lauryl sulfate, triethanolamine lauryl sulfate, sodium cetyl sulfate, sodium stearyl sulfate, POE lauryl ether sulfate, POE lauryl ether sulfate triethanolamine, POE Ammonium lauryl ether sulfate, sodium POE stearyl ether sulfate, sodium stearoylmethyl taurate, triethanolamine dodecylbenzenesulfonate, sodium tetradecenesulfonate, sodium lauryl phosphate, POE lauryl ether phosphate and salts thereof, N-lauroyl glutamates (lauroyl) Sodium glutamate), N-lauroylmethyl-β-alanine salt, N-acyl Lysine salts, N- acyl glutamates, lauric acid, a higher fatty acid, myristic acid and salts of these higher fatty acid are exemplified, it is possible to use more than one or two.

Although content of the anionic surfactant in an oxidizing agent containing composition is not specifically limited, Preferably it is 0.01-5 mass%, More preferably, it is 0.05-3 mass%, More preferably, it is 0.1-1 0.5% by mass.
In addition, it has the effect | action that a viscosity falls by long-term storage by containing an anionic surfactant.

Amphoteric surfactants Examples of amphoteric surfactants include amino acid type amphoteric surfactants and betaine type amphoteric surfactants.
Specific examples of the amino acid type amphoteric surfactant include, for example, N-lauroyl-N′-carboxymethyl-N′-hydroxyethylethylenediamine sodium (Naurolauroacetic acid Na), 2-alkyl-N-carboxymethyl-N-hydroxyethyl. Imidazolinium betaine, sodium undecylhydroxyethyl imidazolinium betaine, alkyldiaminoethylglycine hydrochloride, N-coconut oil fatty acid acyl-N′-carboxyethyl-N′-hydroxyethylethylenediamine sodium, N-coconut oil fatty acid acyl-N '-Carboxyethoxyethyl-N'-carboxyethylethylenediamine disodium, N-coconut oil fatty acid acyl-N'-carboxymethoxyethyl-N'-carboxymethylethylenediamine disodium, lauryldiaminoe Glycine-type amphoteric surfactants such as sodium glycine, palm oil fatty acid acyl-N-carboxyethyl-N-hydroxyethylethylenediamine sodium; sodium laurylaminopropionate, sodium laurylaminodipropionate, triethanolamine laurylaminopropionate, etc. And aminopropionic acid type amphoteric surfactants.
Specific examples of the betaine-type amphoteric surfactant include, for example, coconut oil alkylbetaine, lauryldimethylaminoacetic acid betaine, myristyldimethylaminoacetic acid betaine, stearyldimethylaminoacetic acid betaine, sodium stearyldimethylbetaine, coconut oil fatty acid amidopropyl betaine, palm Aminoacetic acid betaine type amphoteric surfactants such as oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, ricinoleic acid amidopropyl betaine, stearyl dihydroxyethyl betaine; sulfobetaine type amphoteric surfactants such as lauryl hydroxysulfobetaine .

  Although content of the amphoteric surfactant in an oxidizing agent containing composition is not specifically limited, Preferably it is 0.001-5 mass%, More preferably, it is 0.005-3 mass%, More preferably, it is 0.01-2. 5% by mass.

  The total amount of all the surfactants in the oxidizing agent-containing composition is not particularly limited, but is preferably 0.01 to 50% by mass, more preferably 0.05 to 40% by mass, and particularly preferably. Is 0.1-30 mass%.

Other Components Other optional components can be blended in the oxidizing agent-containing composition of the present invention. For example, oily components, preservatives such as phenoxyethanol and sodium benzoate, organic solvents such as ethanol, saccharides such as sorbitol and maltose, water-soluble polymers such as hydroxyethylcellulose and carboxyvinyl polymer, polydimethylmethylenepiperidinium solution, Cationized water-soluble polymers such as diallyldimethylammonium chloride / hydroxyethylcellulose, polyhydric alcohols such as polyethylene glycol and dipropylene glycol, trisodium ethylenediamine hydroxyethyl triacetate dihydrate, tetrasodium hydroxyethanediphosphonate, etc. Agents, inorganic salts such as sodium chloride, pH adjusters such as phosphoric acid, lactic acid, ammonium bicarbonate, direct dyes, hair growth ingredients, plant extracts, herbal extracts, amino acids / peptides, urea, vitamins Perfumes and ultraviolet absorbers and the like.

Oily component The oily component is a component that is mixed and emulsified with water and an aqueous component such as ethanol and a surfactant. Examples thereof include higher alcohols, fats and oils, waxes, hydrocarbons, higher fatty acids, esters, silicone oils, fluorine oils and the like. One or two or more of these oily components can be selected and used.

  The higher alcohol is preferably an alcohol having 8 or more carbon atoms. For example, cetyl alcohol (cetanol), stearyl alcohol, cetostearyl alcohol, oleyl alcohol, linoleyl alcohol, linoleyl alcohol, aralkyl alcohol, behenyl alcohol, lauryl alcohol, myristyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyl Examples include dodecanol, decyltetradecanol, phytosterol, phytostanol, cholesterol, cholestanol, lanosterol, and ergosterol.

  Oils and fats are triglycerides, that is, triesters of fatty acids and glycerin. For example, olive oil, rosehip oil, camellia oil, shea fat, macadamia nut oil, almond oil, tea seed oil, sasanqua oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, beef fat, cacao butter, corn oil, peanut Oil, rapeseed oil, rice bran oil, rice germ oil, wheat germ oil, pearl barley oil, grape seed oil, avocado oil, carrot oil, castor oil, flaxseed oil, coconut oil, mink oil, egg yolk oil and the like.

  Waxes are esters of higher fatty acids and higher alcohols. For example, beeswax (cane wax), candelilla wax, carnauba wax, jojoba oil, lanolin, whale wax, rice bran wax, sugar cane wax, palm wax, montan wax, cotton wax, bayberry wax, ibota wax, capock wax, shellac wax, and the like.

  A hydrocarbon is a compound composed of carbon and hydrogen. Examples thereof include liquid paraffin, paraffin, microcrystalline wax, petrolatum, isoparaffins, ozokerite, ceresin, polyethylene, α-olefin oligomer, polybutene, synthetic squalane, squalene, hydrogenated squalane, limonene, and turpentine oil.

  The higher fatty acid is preferably a fatty acid having 8 or more carbon atoms. Examples thereof include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, and lanolin fatty acid.

  Esters are compounds obtained by a dehydration reaction between a fatty acid and an alcohol. For example, diisopropyl adipate, 2-hexyldecyl adipate, isopropyl myristate, myristyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, diisopropyl sebacate, isopropyl palmitate, 2-ethylhexyl palmitate, Cetyl ethylhexanoate, butyl stearate, isocetyl isostearate, hexyl laurate, decyl oleate, fatty acid (C10-30) (cholesteryl / lanosteryl), lauryl lactate, octyldodecyl lactate, lanolin acetate, dipentaerythritol fatty acid ester, mono Examples thereof include N-alkyl glycol isostearate and lanolin derivatives.

  Silicone oil is a synthetic polymer in which silicon with organic groups and oxygen are alternately linked by chemical bonds. For example, dimethylpolysiloxane (INCI name: dimethicone), dimethylpolysiloxane having hydroxy end groups (INCI name: dimethiconol), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, polyether-modified silicone, average Examples include highly polymerized silicones having a polymerization degree of 650 to 10,000, amino-modified silicones, betaine-modified silicones, alkyl-modified silicones, alkoxy-modified silicones, mercapto-modified silicones, carboxy-modified silicones, and fluorine-modified silicones.

  Among the above, amino-modified silicones include, for example, aminopropylmethylsiloxane / dimethylsiloxane copolymer (INCI name: aminopropyl dimethicone), aminoethylaminopropylsiloxane / dimethylsiloxane copolymer (INCI name: amodimethicone), And aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer (INCI name: trimethylsilylamodimethicone).

  Although content of the oil-based component in an oxidizing agent containing composition is not specifically limited, Preferably it is 0.1-30 mass%, More preferably, it is 0.5-20 mass%, More preferably, it is 1-10 mass%.

Next, the hair treatment agent will be described in detail.
[About hair treatment agents]
The hair treatment agent of the present invention comprises a first agent containing an alkaline agent and a second agent containing an oxidizing agent, which are mixed at the time of use and applied to the hair. And the oxidizing agent containing composition mentioned above is used for the 2nd agent containing an oxidizing agent.
Specific examples of the hair treatment agent include hair dyes such as oxidative hair dyes, hair decoloring / destaining agents, and the like.

  An oxidative hair dye mixes the 1st agent containing an alkaline agent and an oxidative dye, and the 2nd agent containing an oxidant, and colors an oxidative dye with an oxidant, and dyes hair. Here, the alkaline agent functions to swell the hair and promote the penetration of dyes and oxidants, and the oxidant functions to oxidize oxidative dyes and to decompose melanin inside the hair. Have.

  The hair decoloring / decoloring agent does not contain an oxidation dye in the first agent and decolorizes the hair. The hair bleaching agent is for decolorizing the hair by oxidative decomposition of melanin in the hair, and the hair bleaching agent is for bleaching the dye and melanin from the dyed hair.

  As described above, the hair dye, the hair bleaching agent or the hair bleaching agent is typically a two-component type consisting of the first agent and the second agent, but is a multi-component type consisting of three or more agents. May be.

  The viscosity at 25 ° C. of the hair treatment agent in which the first agent and the second agent are mixed is preferably 1000 to 20000 mPa · s, more preferably 2000 to 15000 mPa · s, from the viewpoints of applicability and dripping. Yes, more preferably 2500 to 10000 mPa · s, and particularly preferably 3000 to 7000 mPa · s. In addition, the measuring method of the viscosity in 25 degreeC is performed like the oxidizing agent containing composition.

[About the first agent]
The first agent is a composition containing an alkaline agent. The viscosity at 25 ° C. of the first agent is preferably 5000 to 50000 mPa · s, more preferably 6000 to 45000 mPa · s, and further preferably 7000 to 40000 mPa · s. In addition, the measuring method of the viscosity in 25 degreeC is performed like the oxidizing agent containing composition.

  The form of the first agent may be any form, and examples thereof include a liquid, an emulsion, a cream, and a gel. In the case of containing an oil component, the O / W type, W / O type, W / O / W type and the like are not particularly limited, but an O / W type cream or gel is preferable.

Next, each component contained in the first agent will be described in detail.
Examples of the alkali agent alkali agent include ammonia, alkanolamines, silicates, carbonates, bicarbonates, metasilicates, sulfates, chlorides, phosphates, basic amino acids and the like. Specifically, examples of the alkanolamine include monoethanolamine and triethanolamine, examples of the silicate include sodium silicate and potassium silicate, examples of the carbonate include sodium carbonate and ammonium carbonate, Examples of the bicarbonate include sodium bicarbonate and ammonium bicarbonate, examples of the metasilicate include sodium metasilicate and potassium metasilicate, examples of the sulfate include ammonium sulfate, and examples of the chloride include ammonium chloride. Examples of the phosphate include primary ammonium phosphate and secondary ammonium phosphate, and examples of the basic amino acid include arginine, lysine and salts thereof. Of these, ammonia and ammonium salts are preferred.
From the viewpoint of further reducing the viscosity of the mixture of the first agent and the second agent, an alkaline agent having a sulfate or carbonate is preferable.

  The content of the alkali agent in the first agent is not particularly limited, but is preferably 0.01 to 20% by mass, more preferably 0.1 to 15% by mass.

Oxidative dyes Oxidative dyes are dyes that develop color by oxidative polymerization with an oxidizing agent. Oxidative dyes include dye intermediates that develop color by their own oxidation and couplers that have various color tones depending on the combination of the dye intermediates.

Dye intermediates are dye precursors that are primarily o- or p-phenylenediamines or aminophenols, and are themselves typically colorless or weakly colored compounds.
Specifically, p-phenylenediamine, toluene-2,5-diamine (p-toluylenediamine), N-phenyl-p-phenylenediamine, 4,4′-diaminodiphenylamine, p-aminophenol, o-amino Phenol, p-methylaminophenol, N, N-bis (2-hydroxyethyl) -p-phenylenediamine, 2-hydroxyethyl-p-phenylenediamine, o-chloro-p-phenylenediamine, 4-amino-m- Examples include cresol, 2-amino-4-hydroxyethylaminoanisole, 2,4-diaminophenol and salts thereof.

  The coupler mainly includes m-diamines, aminophenols or diphenols, specifically, resorcin, catechol, pyrogallol, phloroglucin, gallic acid, hydroquinone, 5-amino-o-cresol, m-amino. Phenol, 5- (2-hydroxyethylamino) -2-methylphenol, m-phenylenediamine, 2,4-diaminophenoxyethanol, toluene-3,4-diamine, α-naphthol, 2,6-diaminopyridine, diphenylamine, 3,3′-iminodiphenyl, 1,5-dihydroxynaphthalene and tannic acid and their salts are exemplified.

  The oxidation dye includes acid addition salts of the above-described compounds. Examples of acid addition salts include addition salts of inorganic acids such as hydrochlorides and sulfates, and addition salts of organic acids such as acetates. From the viewpoint of further reducing the viscosity of the mixture of the first agent and the second agent, an oxidation dye having a sulfate and a carbonate is preferable.

These oxidation dyes can be used by selecting one kind or two or more kinds according to a desired color tone.
Although content of the oxidation dye in a hair treatment agent is not specifically limited, Preferably it is 0.01-10 mass%, More preferably, it is 0.05-7 mass%.

In the other component first agent, “surfactant” and “other components” described in the section of the oxidizing agent-containing composition can be blended as optional components. Moreover, you may mix | blend antioxidants, such as ascorbic acid.

The carbonate hair treatment agent preferably contains a carbonate. The carbonate may be contained in any of the agents constituting the hair treatment agent such as the first agent and the second agent, but is preferably contained in the first agent. By containing the carbonate, there is an effect of further reducing the viscosity of the mixture of the first agent and the second agent and an effect of suppressing the change in the viscosity of the mixture of the first agent and the second agent over time. .

  The carbonate supply source may be any substance, and examples thereof include an alkali agent that generates a carbonate such as sodium carbonate, ammonium carbonate, sodium bicarbonate, and ammonium bicarbonate.

The sulfate hair treatment agent preferably contains a sulfate. The sulfate may be contained in any of the agents constituting the hair treatment agent such as the first agent and the second agent, but is preferably contained in the first agent. By containing the sulfate, there is an effect of further reducing the viscosity of the mixture of the first agent and the second agent.

  The source of sulfate may be any substance, for example, paratoluylenediamine sulfate, paraphenylenediamine sulfate, metaaminophenol sulfate, 5-aminoorthocresol sulfate, paraaminophenol sulfate, paranitroorthophenylenediamine sulfate. Oxidation dyes that generate sulfates such as 2,4-diaminophenoxyethanol sulfate, 2,2 ′-[(4-aminophenyl) imino] bisethanol sulfate, paramethylaminophenol sulfate, 2,6-diaminopyridine sulfate, Examples include alkali agents that generate sulfates such as ammonium sulfate.

[How to use hair treatment agents]
The method for using the hair treatment agent of the present invention comprises (Step 1) a step of preparing a hair treatment agent by mixing the first agent described above and the above-described oxidative hair dye composition as the second agent, (Step 2). Applying a hair treatment agent to the hair.

  The operation of mixing the first agent and the second agent in step 1 may be performed by any method. For example, the first agent and the second agent are put into a container, and the container is shaken and mixed. And a method of mixing with a stirring rod, a stirring blade, etc., a method of mixing with an applicator such as a brush, and the like.

  The step of applying the hair treatment agent in Step 2 to the hair may be applied by any method, for example, a method of applying to the hair with an applicator such as a brush or a comb, or a hand wearing gloves on the hair. The method of apply | coating etc. are mentioned. From the viewpoint of suppressing the occurrence of uneven application, a method of applying to the hair with a brush is preferable, and from the viewpoint of simplicity of the application operation, a step of applying to the hair with a hand wearing gloves is preferable.

The hair may be human hair such as human head hair, eyelashes, eyebrows, shank, or animal hair such as pets. In particular, human hair is preferred.
Moreover, it is preferable to use with respect to the already dyed hair processed by the hair dye, the decoloring agent, or the decoloring agent in the past.

Next, the embodiment will be described more specifically with reference to examples and comparative examples.
[Oxidizing agent-containing composition (second agent)]
(Examples 1-1 to 1-5, Comparative Example 1-1)
By mixing the components shown in Table 1 and Table 2, the oxidizing agent-containing compositions of Examples 1-1 to 1-5 and Comparative Example 1-1 were prepared and used as the second agent of the hair treatment agent. .
The production of the second agent is performed as follows, for example. First, each component other than hydrogen peroxide solution and phenoxyethanol is put in a container, dissolved and emulsified at 80 ° C., and cooled to 40 ° C. Thereafter, hydrogen peroxide solution and phenoxyethanol are added, and the mixture is prepared with water so that the total amount becomes 100%. For the mixer, an “emulsification tester ET-SA type” (manufactured by Nikko Chemicals) was used.
Next, after the produced second agent was stored at 25 ° C. for 1 week, the viscosity at 25 ° C. was measured. The results are shown in the column of “Viscosity (25 ° C., mPa · s)” in Tables 1 and 2.

Further, each second agent was subjected to a storage test for 1 month at 50 ° C., and the viscosity after the storage test was described in the column of “viscosity after storage (mPa · s)”. Moreover, the change rate was calculated about the viscosity change of the 2nd agent by a storage test, and storage stability was evaluated (henceforth "the 2nd agent change rate"). In addition, the 2nd agent change rate was computed by the following formula | equation (1).
Second agent change rate (%) = {(viscosity after storage−viscosity before storage) / viscosity before storage} × 100 (1)

  Referring to Table 1, since Example 1-1 and Example 1-2 have a smaller change rate of the second agent than Comparative Example 1-1, (A-1) a surfactant having a sterol skeleton, or (A-2) By containing the surfactant having a lanolin-derived lipophilic group, it is recognized that the change in the viscosity of the second agent over time is suppressed and the storage stability is excellent. Furthermore, Example 1-3 containing (A-1) a surfactant having a sterol skeleton and (A-2) a surfactant having a lipophilic group derived from lanolin has a second agent change rate. It is the smallest and has a particularly excellent effect on storage stability.

Referring to Table 2, Example 1-2 containing (B) nonionic surfactant is more stable than Examples 1-4 and 1-5 not containing (B) nonionic surfactant. It is recognized that it has excellent properties.
Moreover, although the viscosity of an anionic surfactant was changed by a storage test, an effect of decreasing the viscosity was recognized. This action is a favorable tendency from the viewpoint of reducing the viscosity of the mixture.

[First agent]
(Examples 2-1 to 2-4)
By mixing each component shown in Table 3, the compositions of Examples 2-1 to 2-4 were prepared and used as the first agent of the hair treatment agent.
The first agent is manufactured as follows, for example. First, components other than the oxidation dye, ammonia, ammonium hydrogen carbonate, and L-ascorbic acid are put in a container, dissolved and emulsified at 80 ° C., and cooled to 40 ° C. Thereafter, an oxidative dye, ammonia, ammonium hydrogen carbonate, and L-ascorbic acid are added and prepared with water to a total of 100%. For the mixer, an “emulsification tester ET-SA type” (manufactured by Nikko Chemicals) was used.
Next, the viscosity immediately after production at 25 ° C. was measured and described in the column of “Viscosity (25 ° C., mPa · s)” in Table 3.

[Hair treatment agent]
(Examples 3-1 to 3-2, Comparative example 3-1)
The hair treatment agents of Examples 3-1 to 3-2 and Comparative Example 3-1 were prepared by mixing the first agent and the second agent shown in Table 4. The mixing ratio was 1: 1 (first agent: second agent). In the mixing method, 30 g each of the first agent and the second agent were weighed, put into the hair dyeing cup in the order of the first agent and the second agent, and mixed with a mudler or a hair dyeing brush.

Next, the viscosity of the hair treatment agent after mixing was measured and described in the column of “Viscosity after mixing (25 ° C., mPa · s)” in Table 4.
Further, the action of reducing the viscosity of the mixture by the second agent was evaluated by calculating the difference between the viscosity of the first agent and the viscosity of the mixture (hereinafter referred to as “reduced viscosity”). The reduced viscosity was calculated by the following formula (2).
Reduced viscosity (mPa · s) = viscosity of first agent before mixing−viscosity of hair treatment agent after mixing (2)

  Furthermore, according to the following evaluation criteria, for the hair treatment agent of each example, “the viscosity-reducing action of the mixture by the second agent”, “mixability”, “operability by brush coating”, “operability by hand coating” Was evaluated. The results are shown in Table 4.

<Viscosity reduction action of the mixture by the second agent>
A: Reduced viscosity is 8,000 mPa · s or more.
○: Decreasing viscosity is 4,000 mPa · s or more and less than 8,000 mPa · s.
Δ: Reduced viscosity is 2,000 mPa · s or more and less than 4,000 mPa · s.
X: Reduced viscosity is less than 2,000 mPa · s.

<Method for evaluating mixing>
After mixing the 1st agent and the 2nd agent with the hair dyeing cup as mentioned above, the mixture was taken out from the hair dyeing cup, and the following criteria were evaluated by visual observation.
(Double-circle): It mixes smoothly and uniformly in the hair dye cup.
○: Almost no lumps (mixed imperfections) that were smoothly mixed in the hair dyeing cup and not mixed.
Δ: Some time is required for mixing, or some lumps (mixed defectives) are recognized.
X: It takes time to mix or a large amount of lumps (mixed defectives) is observed.

<Ease of operation with brush painting>
60 g of the hair treatment agent obtained in each example was applied to an evaluation wig that had not been treated with a brush for dyeing at 25 ° C., and operability was evaluated by the following evaluation method.
A: When an appropriate amount is taken, there is no dripping from the brush. In addition, it is easy to stretch on the hair when applied to the hair, and is also familiar to the hair.
○: When an appropriate amount is taken, there is almost no dripping from the brush. In addition, it is easy to stretch on the hair when applied to the hair, and is also familiar to the hair.
Δ: There is a slight drop from the brush when an appropriate amount is taken. Or it is a little difficult to stretch on the hair when applied to the hair, or it is slightly unfamiliar with the hair.
X: When an appropriate amount is taken, there is a sagging drop from the brush. Or, it is difficult to stretch on the hair when applied to the hair, or the hair does not fit well.

<Hand-painted operability>
60 g of the hair treatment agent obtained in each example was applied to a wig for evaluation wetted with hot water (40 ° C.) under 25 ° C. conditions, and operability was evaluated by the following evaluation method.
(Double-circle): The extension on hair and the adhesiveness to hair are very excellent. Or it is easy to apply to the inside of the hair.
○: Elongation on hair and adhesion to hair are good. Or it is easy to apply to the inside of the hair.
(Triangle | delta): The extension on hair and the adhesiveness to hair are a little inferior. Or it is a little difficult to apply to the inside of the hair.
X: Elongation on hair and adhesion to hair are inferior. Or application to the inside of the hair is difficult.

  Considering the evaluation results for Examples 3-1 to 3-2 and Comparative Example 3-1, the surfactant (A-1) having a sterol skeleton in the second agent and (A-2) derived from lanolin In Comparative Example 3-1, which does not contain a surfactant having a lipophilic group, the “viscosity-reducing action of the mixture by the second agent” was low, and it was a hair treatment agent with poor hand-operability. Also, the evaluation of “mixability” was low.

(Examples 4-1 to 4-5)
Next, the hair treatment agents of Examples 4-1 to 4-5 were prepared by mixing the first agent and the second agent shown in Table 5, and evaluated in the same manner as in Example 3-1. In Examples 4-1 to 4-5, the mixing ratio of the first agent and the second agent was changed to change the “viscosity-reducing action of the mixture by the second agent”, “mixability”, and “operability in brush coating”. , “Hand-painted operability” was evaluated.

When Table 5 was referred, the mixing ratio (1st agent: 2nd agent) WHEREIN: In any of 1: 0.2-1: 8, the effect excellent in each evaluation item was recognized.
Further, in detail, the larger the amount of the second agent relative to the amount of the first agent (second agent / first agent), the greater the viscosity reducing action of the mixture by the second agent, and 0.5 When it exceeds, the outstanding effect is recognized, and when it exceeds 1, the especially outstanding effect is recognized.

(Examples 5-1 to 5-4)
Next, the hair treatment agents of Examples 5-1 to 5-4 were prepared by mixing the first agent and the second agent shown in Table 6, and in the same manner as in Example 3-1, The viscosity-reducing action of the mixture by the agent ”,“ mixability ”,“ operability by brush coating ”, and“ operability by hand coating ”were evaluated. In Examples 5-1 to 5-4, the change with time in viscosity after mixing was evaluated.

Regarding the change with time in the viscosity after mixing, the viscosity was measured after 60 minutes at 25 ° C. after mixing the first agent and the second agent, and the rate of change relative to the viscosity immediately after mixing was calculated (hereinafter referred to as “change after mixing”). Rate "). The change rate after mixing was calculated by the following formula (3).
Rate of change after mixing (%) = {(viscosity after 60 minutes of mixing−viscosity immediately after mixing) / viscosity immediately after mixing} × 100 (3)

In Examples 5-1 to 5-4, the effects of sulfate and carbonate contained in the first agent were examined. Paratoluylenediamine sulfate was used as the sulfate source, and ammonium bicarbonate was used as the carbonate source. In addition, when a sulfate or carbonate is contained in the first agent, the effect of increasing the viscosity reducing action of the mixture by the second agent is recognized.
Moreover, when carbonate was contained, the absolute value of the rate of change after mixing decreased. That is, it can be said that the change in the viscosity of the mixture over time was reduced by containing the carbonate.
Furthermore, referring to Table 6, the first agent containing carbonate and not containing sulfate is particularly effective in the rate of change after mixing.

(Examples 6-1 to 6-3)
Next, the hair treatment agent of Examples 6-1 to 6-3 was prepared by mixing the first agent and the second agent shown in Table 7, and in the same manner as in Example 3-1, The viscosity-reducing action of the mixture by the agent ”,“ mixability ”,“ operability by brush coating ”, and“ operability by hand coating ”were evaluated. In Examples 6-1 to 6-3, the feel of the hair when applied to the hair was evaluated. The feel of hair was evaluated according to the following criteria.

<Hair feel>
60 g of the hair treatment agent obtained in each example was applied to an evaluation wig using a brush, and after 20 minutes, the hair treatment agent was washed away. Then, shampoo (Hoyu Co., Ltd. Promaster Color Care Shampoo) was applied twice and treatment (Hoyu Co., Ltd. Promaster Color Care Hair Treatment) was applied once. And about the hair after drying with warm air, the total from washing away to drying was evaluated with the following evaluation methods.
A: It is hard to feel the hardness and squeak of the hair from the time of plain rinsing of the hair treatment agent to after drying.
○: Feels a little hard during shampooing, but the hardness felt after treatment and after drying is resolved.
Δ: Feels a little hard even during plain rinsing and is refreshing. In addition, the hardness felt during shampooing is moderated after treatment but remains after drying.
X: Hard from plain rinse, and feels harder and more squeaky with shampoo. It feels hard and squeaky after drying.

In Examples 6-1 to 6-3, the effects of various surfactants in the hair treatment agent in which the first agent and the second agent were mixed were examined. Regarding the “viscosity-reducing action of the mixture by the second agent”, “mixability”, “operability by brush coating”, and “operability by hand coating”, all the surfactants showed excellent effects. .
Moreover, Example 6-1 and 6-2 containing a cationic surfactant were recognized to have superior effects on hair feel than Example 6-3 not containing a cationic surfactant.

The use of the oxidizing agent-containing composition of the present invention is not particularly limited, and can be used, for example, as an oxidizing agent-containing composition for reducing the viscosity of the mixture by mixing with a composition having a high viscosity.
Moreover, it can utilize also for the method of suppressing the change of the viscosity of an oxidizing agent containing composition with time.

  The oxidant-containing composition of the present invention is preferably used for hair treatment agents such as multi-component oxidative hair dyes, decolorizers, and decolorizers. The hair may be human hair such as human hair, eyelashes, eyebrows, shank, or animal hair such as pets.

The use of the method of using the hair treatment agent of the present invention is not particularly limited, but it can be suitably used when, for example, it is desired to suppress the tensile stress applied to the hair during an application operation by brushing or the like. Specifically, it can be used in a method of using a hair treatment agent on already-dyed hair that is easily damaged. In addition, since it is excellent in applicability and can be suitably used for both new hair and pre-dyed hair, it is applied to a method of using a hair treatment agent that uniformly applies from the root of the hair to the hair tip using the same hair treatment agent. Can also be used.
Moreover, in preparation of a hair treatment agent, it can utilize for the method of mixing a 1st agent and a 2nd agent easily.

  The method of using the hair treatment agent of the present invention is used in a beauty salon, a barber shop or the like. Moreover, it can utilize also for the method of processing hair by the to-be-applied persons, such as a self-hair color.

Claims (6)

In the oxidizing agent-containing composition used as the second agent of the multi-agent hair treatment agent,
The viscosity at 25 ° C. is 100 to 10,000 mPa · s,
(A-1) A surfactant having a sterol skeleton, or
(A-2) An oxidizing agent-containing composition comprising a surfactant having a lipophilic group derived from lanolin. Furthermore,
(B) Nonionic surfactant (excluding the surfactant having the (A-1) sterol skeleton and the surfactant having the lipophilic group derived from (A-2) lanolin), or
(C) A cationic surfactant is contained, The oxidizing agent containing composition of Claim 1 characterized by the above-mentioned. In a hair treatment agent comprising a first agent containing an alkaline agent and a second agent containing an oxidizing agent,
The first agent has a viscosity at 25 ° C. of 5000 to 50000 mPa · s,
The hair treatment agent, wherein the second agent is the oxidant-containing composition according to claim 1 or 2, and has a viscosity lower than that of the first agent.   Furthermore, carbonate or sulfate is contained, The hair treatment agent of Claim 3 characterized by the above-mentioned.   The hair treatment agent according to claim 3 or 4, wherein a viscosity at 25 ° C of the hair treatment agent after mixing the first agent and the second agent is 1000 to 20000 mPa · s. A method for using a hair treatment agent comprising the following step 1 and step 2.
Step 1:
A first agent containing an alkaline agent,
A first agent having a viscosity of 5000 to 50000 mPa · s at 25 ° C .;
A second agent containing an oxidizing agent,
(A-1) A surfactant having a sterol skeleton, or
(A-2) containing a surfactant having a lipophilic group derived from lanolin,
Step 2 for preparing a hair treatment agent by mixing a second agent having a viscosity at 25 ° C. of 100 to 10,000 mPa · s and having a viscosity lower than that of the first agent:
Applying the hair treatment agent to the hair