JP4889260B2 - Emulsified cosmetics - Google Patents

Description

  The present invention relates to an oil-in-water emulsifier-type cosmetic, and more particularly to an oil-in-water emulsifier-type cosmetic suitable for a base cosmetic for correcting pores.

The presence of pores has a great influence on the formation of facial impressions, but this influence is not favorable. Evidence that skin metaphors such as “fine skin” and “moist skin” are positive, whereas illustrations such as “conspicuous pores” and “summer oranges” have a large negative image It can be said. With the advancement of technologies such as the development of various raw materials, whitening cosmetics and moisturizing cosmetics have been enriched. The development of technology that makes “pores” inconspicuous is becoming a new theme in the field of cosmetic science.

  There are two directions for dealing with pores by cosmetics. That is, the presence of pores can be determined by utilizing the direction in which the pore shape is reduced by administration of an active ingredient (see, for example, Patent Document 1, Patent Document 2, and Patent Document 3) and optical effects such as powder. It is a method of making it inconspicuous (for example, Patent Document 4, Patent Document 5, Patent Document 6). Of these, the former requires that the surface shape of the skin itself be significantly changed, so there are currently some that have some effect, but none that have a satisfactory effect. It is. In the latter case, if there is a certain amount of make-up technique, even if it produces a decent effect immediately after makeup, there is little chance of losing the effect over time. There was a flaw that didn't make sense. Further, if the pore filling itself is conspicuous, the correction effect of the pores is impaired, and therefore, a device for reducing the difference in appearance between the pore filling and the skin has been desired. Of course, in such an optical effect, depending on the hiding power of highly hiding powder such as titanium dioxide and zinc oxide, covering the boundary between the powder filled in the pores and the skin, This is inconsistent with the gist of the present invention of correcting pores in a natural way and cannot be said to be preferable.

  On the other hand, the spherical powder having a particle size of 3 to 20 μm has a remarkable effect on filling pores in terms of simplicity, and the pore correction containing the spherical powder having a particle size of 3 to 20 μm to be filled with pores. No cosmetics for use were known. In addition, it has not been known at all that an oil-in-water emulsifier containing cross-linked methylpolysiloxane is suitable as a dosage form when filling such pores with such powder.

  Regarding cross-linked methylpolysiloxane, it was known to use this in the form of an oil-in-water emulsifier together with an alkyl-modified carboxyvinyl polymer (see, for example, Patent Document 7), but with a spherical powder having a particle size of 3 to 20 μm. It has never been known to formulate cosmetics.

JP 2005-179342 A JP 2004-339120 A JP 2003-137713 A Japanese Patent Laid-Open No. 2004-210655 JP 2005-089461 A JP-A-11-349442 JP 2002-284624 A

  The present invention has been made under such circumstances, and an object of the present invention is to provide a technique for making the presence of pores inconspicuous with a natural finish.

In view of such circumstances, the present inventors have sought for a technique for making pores appear inconspicuous with a natural finish, and as a result of intensive research efforts, 1) cross-linked methylpolysiloxane and 2) specific particles. It has been found that an oil-in-water emulsifier type cosmetic containing a specific spherical powder having a diameter and 3) fibrous titanium dioxide has such properties, and has completed the invention. That is, the present invention is as follows.
(1) 1) cross-linked methylpolysiloxane and 2) silicic anhydride having no porous layer on the surface and (diphenyl dimethicone / vinyl diphenyl dimethicone / silsesquioxane)
A cosmetic in the form of an oil-in-water emulsifier, comprising a spherical powder having a particle diameter of 3 to 20 μm selected from a cross polymer and 3) fibrous titanium dioxide .
(2) The cosmetic according to (1), wherein the fibrous titanium dioxide is fibrous titanium dioxide having a hollow structure.
(3) The cosmetic according to (1) or (2), further comprising polyglycerin polyoxybutylene alkyl ether as a hydrophilic surfactant.
(4) The cosmetic according to any one of (1) to (3), which is a base cosmetic for correcting pores.

  According to the present invention, it is possible to provide a technique for making the presence of pores inconspicuous with a natural finish.

(1) Crosslinked methylpolysiloxane which is an essential component of the cosmetic of the present invention The cosmetic of the present invention contains a crosslinked methylpolysiloxane as an essential component and is in the form of an oil-in-water emulsifier. The crosslinked methylpolysiloxane can be produced by adding a crosslinking agent such as methyltrimethoxysiloxane when polymerizing dimethoxydimethylsiloxane to produce a two-dimensional methylpolysiloxane. It is also possible to use a (dimethicone / vinyl dimethicone) crosspolymer in which dimethoxydimethylsiloxane and dimethoxymethylvinylsiloxane are copolymerized and then a vinyl group is polymerized to form a crosslinked structure. There are already commercially available methylpolysiloxanes having such a crosslinked structure, and such commercially available products can be purchased and used. Preferable examples of commercially available products include “silicone KSG-16” manufactured by Shin-Etsu Silicone Co., Ltd. This is a (dimethicone / vinyl dimethicone) crosspolymer. In the cosmetic of the present invention, such a component can contain only one species, or two or more types can be contained in combination. In the cosmetic composition of the present invention, such an ingredient is filled in the pores and has the effect of orienting the spherical powder described later, which makes the pores inconspicuous, by the optical effect accurately and efficiently into the pores. Have In order to exhibit such an action, it is preferable to contain 0.1 to 20% by mass, and more preferably 1 to 10% by mass, of the component, based on the total amount of the cosmetic. This is because if the amount is too large, the stability of the emulsification system may be impaired, and if the amount is too small, the effect may not be obtained.

(2) Spherical powder which is an essential component of the cosmetic of the present invention The cosmetic of the present invention is characterized by containing a spherical powder having a particle size of 3 to 20 μm, preferably 4 to 15 μm. Examples of the material of the spherical powder include silicic anhydride and diphenyl dimethicone / vinyl diphenyl dimethicone / silsesquioxane) cross-polymer having no porous layer on the surface. As such spherical powder, commercially available products can be used, and “silicone KSP300” ((diphenyldimethicone / vinyldiphenyldimethicone / silsesquioxane) cross-polymer sold by Shin-Etsu Silicone Co., Ltd.) ), “HOLLOWY-N15” (silica that does not have a porous layer on the surface and encloses air particles), and the like, which are sold by Catalyst Chemical Industry Co., Ltd., can be particularly preferably exemplified. These powders have very little change in optical effect even when mixed with sebum. These spherical powders may contain only one species or may contain two or more species in combination. The preferable content of such powder varies depending on the size of the face and the condition of the pores, but is 0.005 to 10% by mass, more preferably 0.01 to 1% by mass. If there is too much, there will be a spherical powder that does not fill the pores, which may impair the makeup effect, if too little, the pores can not be filled and the effect of making the pores inconspicuous is impaired This is because there exists. By filling the pores with such powder, it is possible to erase the shadow of the pore portion,
This makes the pores inconspicuous.

(3) Cosmetics of this invention The cosmetics of this invention contain the said essential component and the fibrous titanium dioxide mentioned later , and are the oil-in-water emulsifier form, It is characterized by the above-mentioned. As the surfactant for forming the oil-in-water emulsifier form, it is preferable to use polyglycerin polyoxybutylene alkyl ether ((glycerin / oxybutylene) copolymer alkyl) as the hydrophilic surfactant. This is because the reversal is mild and the filling of the spherical powder into the pores is hardly hindered by the reversal during the extension. As such surfactants, those already on the market exist, and commercial products can be purchased and used. As a commercial item, "High Glyol S-26" (made by Nippon Surfactant Co., Ltd.) which is polyglycerin polyoxybutylene stearyl ether can be illustrated preferably. The preferable content of such a component is 0.1 to 5% by mass.

In the cosmetic of the present invention, in addition to the essential component powder, a powder component not classified as an essential component may be contained. Such powders may have a surface treated such as mica, talc, kaolin, synthetic mica, etc .; surface may be treated, mica titanium, fish phosphorus foil, oxychloride Pearl agents such as bismuth; of mica titanium, coated with controlled amount of titanium dioxide, iris foil with interference color, fine titanium dioxide with particle size of 0.1-2μm, metal salt sequentially composite powders such as coated powder can be preferably exemplified a talc titanium dioxide, silica-alumina; position is not the Piradokure, special processing powders such as clay mineral organically modified by such a quaternary ammonium salt . Particularly preferred are spherical powders, specially processed powders, and composite powders that do not belong to the essential components of the cosmetic of the present invention, such as different particle sizes.
As described above, the cosmetic of the present invention contains fibrous titanium dioxide. The titanium dioxide fiber維状, be of solid, may be one having voids, preferably having a void. As the air gap, a bubble-like air gap or a cylindrical air gap can be provided. More preferable is a tubular shape having a cylindrical gap near the center. Such fibrous titanium dioxide preferably has a shape with a major axis of 1 to 500 μm with respect to a minor axis of 0.1 to 10 μm. Some of such fibrous titanium dioxides are commercially available, and such commercial products can be purchased and used. Preferable commercially available products include “fibrous titanium oxide” (made by Iwatani Corporation), which is solid fibrous titanium dioxide, “hollow titanium fiber” (made by Catalyst Chemical Industry Co., Ltd.), which is tubular titanium dioxide, and the like. It can be illustrated. Among these, “Hollow Titanium Fiber” manufactured by Catalyst Kasei Kogyo Co., Ltd. is particularly preferable because of its effect . The preferred content of titanium dioxide or mow fibrous, 0.005 wt%, more preferably from 0.01 to 5 mass%. Such a component has an effect of making the distinction between the spherical powder filled in the pores and the skin inconspicuous. Moreover, it has the effect | action which prevents that the said spherical powder gets wet with sebum and impairs an optical effect.

  In addition to these, since it is a makeup cosmetic, the cosmetic of the present invention can further contain a coloring material. Examples of such coloring materials include: bengara, yellow iron oxide, black iron oxide, cobalt oxide, ultramarine blue, and bituminous inorganic pigments that may be treated on the surface; red No. 202 that may be raked. , Red 228, Red 226, Yellow 4, Blue 404, Yellow 5, Red 505, Red 230, Red 223, Orange 201, Red 213, Yellow 204, Yellow 203, Blue Organic pigments such as No. 1, Green 201, Purple 201, Red 204 and the like can be exemplified.

In addition to the above components, the cosmetic of the present invention can contain any component that is usually used in cosmetics. Examples of such optional ingredients include macadamia nut oil, avocado oil, corn oil, olive oil, rapeseed oil, sesame oil, castor oil, safflower oil, cottonseed oil, jojoba oil, coconut oil, palm oil, liquid lanolin, and hardened coconut oil. Oil, wax, oils such as beeswax, molasses, hydrogenated castor oil, beeswax, candelilla wax, carnauba wax, ibotarou, lanolin, reduced lanolin, hard lanolin, jojoba wax; , Hydrocarbons such as microcrystalline wax; higher fatty acids such as oleic acid, isostearic acid, lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, undecylenic acid; cetyl alcohol, stearyl alcohol, isostearyl Higher alcohols such as alcohol, behenyl alcohol, octyldodecanol, myristyl alcohol, cetostearyl alcohol; cetyl isooctanoate, isopropyl myristate, hexyldecyl isostearate, diisopropyl adipate, di-2-ethylhexyl sebacate, cetyl lactate, malic acid Diisostearyl, di-2-ethylhexanoic acid ethylene glycol, dicaprate neopentyl glycol, di-2-heptylundecanoic acid glycerin, tri-2-ethylhexanoic acid glycerin, tri-2-ethylhexanoic acid trimethylolpropane, tri Synthetic ester oils such as trimethylolpropane isostearate and pentane erythritol tetra-2-ethylhexanoate; dimethylpolysiloxane, methylphenylpoly Chain polysiloxanes such as Loxane and diphenylpolysiloxane; Cyclic polysiloxanes such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexanesiloxane; amino-modified polysiloxanes, alkyl-modified polysiloxanes, fluorine-modified polysiloxanes, etc. Oils such as silicone oils such as modified polysiloxanes; Anionic surfactants such as fatty acid soap (sodium laurate, sodium palmitate, etc.), potassium lauryl sulfate, trisulfamine amine alkyl sulfate; stearyltrimethylammonium chloride, benzaza chloride Cationic surfactants such as luconium and laurylamine oxide; imidazoline-based amphoteric surfactants (2-cocoyl-2-imidazolinium hydroxide-1-carb Ruboxyethyloxy disodium salt), betaine surfactants (alkyl betaine, amide betaine, sulfobetaine, etc.), amphoteric surfactants such as acylmethyl taurine; sorbitan fatty acid esters (sorbitan monostearate, sesquiolein) Sorbitan acid), glycerin fatty acids (glyceryl monostearate, etc.), propylene glycol fatty acid esters (propylene glycol monostearate, etc.), hardened castor oil derivatives, glycerin alkyl ethers, POE sorbitan fatty acid esters (POE sorbitan monooleate) , Monostearic acid polyoxyethylene sorbitan, etc.), POE sorbite fatty acid esters (POE-sorbite monolaurate, etc.), POE glycerin fatty acid esters (POE-glycerin mono) Sotearate, etc.), POE fatty acid esters (polyethylene glycol monooleate, POE distearate, etc.), POE alkyl ethers (POE2-octyldodecyl ether, etc.), POE alkyl phenyl ethers (POE nonyl phenyl ether, etc.), Pluronic types, POE -POP alkyl ethers (POE / POP2-decyltetradecyl ether, etc.), Tetronics, POE castor oil / hardened castor oil derivatives (POE castor oil, POE hardened castor oil, etc.), sucrose fatty acid esters, alkyl glucosides, etc. Nonionic surfactants: polyethylene glycol, glycerin, 1,3-butylene glycol, erythritol, sorbitol, xylitol, maltitol, propylene glycol, dipropylene glycol , Diglycerin, isoprene glycol, 1,2-pentanediol, 2,4-hexanediol, 1,2-hexanediol, 1,2-octanediol and other polyhydric alcohols; sodium pyrrolidonecarboxylate, lactic acid, sodium lactate Moisturizing ingredients such as paraaminobenzoic acid UV absorbers; anthranilic acid UV absorbers; salicylic acid UV absorbers ; cinnamic acid UV absorbers ; benzophenone UV absorbers; sugar UV absorbers; UV absorbers such as'-hydroxy-5'-t-octylphenyl) benzotriazole and 4-methoxy-4'-t-butyldibenzoylmethane; lower alcohols such as ethanol and isopropanol; vitamin A or a derivative thereof; vitamin B ₆ hydrochloride, vitamin B ₆ tripalmitate, vitamin B ₆ Geo Tanoeto, vitamin B ₂ or derivatives thereof, vitamin B _12, vitamin B such as vitamin B ₁₅ or a derivative thereof; alpha-tocopherol, beta-tocopherol, .gamma.-tocopherol, vitamin E such as vitamin E acetate, vitamin D, Vitamin H,
Preferable examples include vitamins such as pantothenic acid, panthetin and pyrroloquinoline quinone; and antibacterial agents such as phenoxyethanol. Here, since it has a high probability of being administered to skin damaged by ultraviolet rays in summer, it is preferable not to contain butylparaben having a high probability of causing a transient irritation, and for the purpose of maintaining antiseptic power in this situation It is preferable to contain 0.01 to 1% by mass, more preferably 0.3 to 0.6% by mass of phenoxyethanol.

  The cosmetic of the present invention can be produced by treating the essential components and optional components according to a conventional method. The cosmetic of the present invention is a cosmetic for filling pores with the essential component powder to make the pores inconspicuous. For this purpose, the pores are administered without being affected by other cosmetics. It is preferable that it is a kind of cosmetics that can be applied, and it is particularly preferable to apply to base cosmetics such as under-makeup cosmetics and control color cosmetics. It is particularly preferable to apply to the control color among the base cosmetics. This is because the pore filling rate of the spherical powder can be further increased by applying a control color on the skin whose cosmetic paste has been improved with the under-makeup cosmetic. In addition, it is possible to further enhance the effect of such under-makeup cosmetics by containing spherical powder suitable for filling pores (spherical powder which is an essential component of the present invention). Therefore, it is preferable.

  Hereinafter, the present invention will be described in more detail with reference to examples, but it goes without saying that the present invention is not limited to such examples.

<Example 1>
In accordance with the formulation shown below, a control color (oil-in-water emulsifier form), which is a cosmetic of the present invention, was prepared. That is, components (a) and (b) were heated to 80 ° C., (c) was added to (a) and dispersed, and then (b) was gradually added and emulsified with stirring, followed by stirring and cooling to obtain control collar 1. Similarly, Comparative Example 1 in which “silicone KSG-16” was replaced with dimethicone, and Comparative Example 2 in which “silicone KSP300” and “HOLLOWY-N15” were replaced with normal silica (average particle size 1 μm) were also prepared.

B Stearic acid 1.5% by mass
Sucrose stearate 1% by mass
Sucrose palmitate 1% by mass
Stearyl monoglyceride 2% by mass
POE (45) stearate 0.5% by mass
Sorbitan sesquilaurate 0.5% by mass
Sorbitan monoisostearate 0.5% by mass
"High Glyol S-26" 0.5 mass%
Cetanol 0.2% by mass
Squalane 3% by mass
"Silicone KSG-16" 5% by mass
Cyclomethicone 10% by mass
B 1,3-butanediol 6% by mass
Xanthan gum 0.1% by mass
Triethanolamine 0.5 mass%
Phenoxyethanol 0.5% by mass
Water 48.9% by mass
C “Hollow Titanium Oxide Fiber” 0.1% by mass
"Silicone KSP300" 0.1 mass%
"HOLLOWY-N15" 0.1 mass%
Metal soap treated fine particle titanium dioxide 10% by mass
Red No. 226 0.04% by mass
"Tospearl 2000B" 5 mass%
Silica (average particle size 1 μm) 2.96 mass%

<Test Example 1>
Using the control collar 1, Comparative Example 1, and Comparative Example 2, the pore correction effect by filling the pores with powder was examined. In other words, using a panel with conspicuous pores, after washing the face, place cosmetics on the forehead, both cheeks, nose head, and chin, spread the cosmetics with only one rubbing, and apply the cosmetics. The situation around the pores before and after makeup was photographed with a video microscope, and the state of powder filling was judged according to the following criteria. As a result, the control color 1 had a score of 5, whereas the comparative example 1 had a score of 3 and the comparative example 2 had a score of 2, confirming the effect of adding essential components. In order to confirm this as a numerical value, the pore portion of the image was enlarged, and then binarization processing was performed, and the area ratio (%) of the non-filled portion represented by black to the total pore area was calculated. . The results are shown in Table 1. This proved that the score determination was objective.

Score 1: Almost no powder in the pores Score 2: Only the edge of the pores is recognized Score 3: The powder is filled up to about half of the pores Score 4: Powder is in the center of the pores Not allowed Score 5: Powder fills most of pores

<Reference Example 1>
As in Example 1, in accordance with the following prescription, the control collar 2 is of粧料was prepared. When this product was evaluated according to the procedure of Test Example 1, the score was 4. In the cosmetics of this invention, it turns out that the form containing a "hollow titanium oxide fiber" is preferable.

B Stearic acid 1.5% by mass
Sucrose stearate 1% by mass
Sucrose palmitate 1% by mass
Stearyl monoglyceride 2% by mass
POE (45) stearate 0.5% by mass
Sorbitan sesquilaurate 0.5% by mass
Sorbitan monoisostearate 0.5% by mass
"High Glyol S-26" 0.5 mass%
Cetanol 0.2% by mass
Squalane 3% by mass
"Silicone KSG-16" 5% by mass
Cyclomethicone 10% by mass
B 1,3-butanediol 6% by mass
Xanthan gum 0.1% by mass
Triethanolamine 0.5 mass%
Phenoxyethanol 0.5% by mass
Water 48.9% by mass
C “Silicone KSP300” 0.1% by mass
"HOLLOWY-N15" 0.1 mass%
Metal soap treated fine particle titanium dioxide 10.1% by mass
Red No. 226 0.04% by mass
"Tospearl 2000B" 5 mass%
Silica (average particle size 1 μm) 2.96 mass%

<Example 2>
In the same manner as in Example 1, a control color 3 which is a cosmetic of the present invention was produced according to the following formulation. When this product was evaluated according to the procedure of Test Example 1, the score was 4. In the cosmetics of this invention, it turns out that the form containing "polyglycerin polyoxybutylene glycol stearyl" is preferable.

B Stearic acid 1.5% by mass
Sucrose stearate 1% by mass
Sucrose palmitate 1% by mass
Stearyl monoglyceride 2% by mass
POE (45) stearate 1% by mass
Sorbitan sesquilaurate 0.5% by mass
Sorbitan monoisostearate 0.5% by mass
Cetanol 0.2% by mass
Squalane 3% by mass
"Silicone KSG-16" 5% by mass
Cyclomethicone 10% by mass
B 1,3-butanediol 6% by mass
Xanthan gum 0.1% by mass
Triethanolamine 0.5 mass%
Phenoxyethanol 0.5% by mass
Water 48.9% by mass
C “Hollow Titanium Oxide Fiber” 0.1% by mass
"Silicone KSP300" 0.1 mass%
"HOLLOWY-N15" 0.1 mass%
Metal soap treated fine particle titanium dioxide 10% by mass
Red No. 226 0.04% by mass
"Tospearl 2000B" 5 mass%
Silica (average particle size 1 μm) 2.96 mass%

  The present invention can be applied to a control color having a pore correction effect.

Claims (4)

1) Spherical powder having a particle size of 3 to 20 μm selected from cross-linked methylpolysiloxane and 2) silicic anhydride having no porous layer on the surface and (diphenyldimethicone / vinyldiphenyldimethicone / silsesquioxane) crosspolymer An oil-in-water emulsifier type cosmetic comprising a body and 3) fibrous titanium dioxide . Fibrous titanium dioxide, characterized in that it is a fibrous titanium dioxide having a hollow structure, cosmetic composition according to claim 1.   The cosmetic according to claim 1, further comprising polyglycerin polyoxybutylene alkyl ether as a hydrophilic surfactant.   The cosmetic according to any one of claims 1 to 3, wherein the cosmetic is a base cosmetic for correcting pores.