JP7502860B2 - Cleaning composition - Google Patents

Description

The present invention relates to a cleansing composition, and more specifically, to a cleansing composition that has sufficient cleansing properties against makeup cosmetics and facial dirt, while being gentle on the skin and preventing a decrease in the skin's barrier function due to cleansing.

So far, raw materials mainly consisting of acyl isethionate or acylalkyl isethionate have been developed as modified detergents for soap (e.g., Non-Patent Document 1).

In addition, detergent raw materials that are mainly composed of cocoyl isethionate, lauroyl isethionate, cocoyl alkyl isethionate, lauroyl alkyl isethionate, etc., which are obtained by esterifying fatty acids with isethionate or alkyl isethionate, are commercially available, and are known to produce a rich, creamy lather similar to that of soap even in hard water, have low penetration and residual properties on the skin, and cause less of the unpleasant "tightness" that occurs when washing the face than soap (for example, Non-Patent Documents 1 to 3).

Karimae, Takao (2002) "Development of Surfactants" Application Technology of Surfactants, 1-41. Nozaki, Kiyotada (2001) "Development and Application of Plant Raw Materials for Detergents" Fragrance Journal (29) (9), 71-76. Yoshimura et al., J. Soc. Cosmet. Japan, 27, 249 (1993)

However, in the manufacturing process of fatty acid esters of isethionate or alkylisethionate described in Non-Patent Documents 1 to 3, unreacted fatty acids and fatty acid salts are present as by-products in the final reaction mixture, and among the fatty acid salts of various carbon chains, laurate, which has a particularly high ratio in the fatty acid composition, is highly adsorbed to the skin and may cause skin irritation such as rough skin after washing the face.

On the other hand, there have been several reports of cleansers that primarily use anionic surfactants that focus on the selective cleansing of skin components. For example, it is known that by formulating a cleanser that combines a soap of higher fatty acids and basic amino acids or inorganic alkali with a moisturizer and a water-soluble polymer, it is possible to leave intercellular lipids and NMF (Natural Moisturizing Factor) behind.

From the perspective of being gentle to the skin, amphoteric surfactants, which have the characteristic of being less irritating to the skin than anionic surfactants, have been developed, and in recent years the use of amphoteric surfactants in facial cleansers has also become widespread.

The present invention has been made in consideration of the above problems, and its purpose is to provide a cleansing composition that has sufficient cleansing function against makeup cosmetics and facial dirt, while being less irritating to the skin and capable of suppressing a decrease in the skin's barrier function due to cleansing.

As a result of intensive research conducted by the present inventors to achieve the above object, they discovered that by containing (A) an activator composition containing an acyl isethionate and/or an acylalkyl isethionate, and (B) an amine oxide type amphoteric surfactant, a cleanser composition can be obtained which has sufficient cleansing properties against makeup cosmetics and facial dirt, while being less irritating to the skin and capable of suppressing a decrease in the skin's barrier function due to cleansing, and thus completed the present invention.

The first invention is a cleaning composition comprising the following components (A) and (B):
(A) an active agent containing an acyl isethionate and/or an acylalkyl isethionate, and a fatty acid and/or a fatty acid salt which is a by-product during the production of the acyl isethionate and/or the acylalkyl isethionate, wherein the content of the acyl isethionate and/or the acylalkyl isethionate is 80% by mass or more based on the total amount of the active agent excluding water;
(B) Amine oxide type amphoteric surfactant

The second invention is the cleaning composition according to the first invention, in which the amount of component (A) in the entire cleaning composition is 0.1 to 50 mass %, and the amount of component (B) in the entire cleaning composition is 0.01 to 10 mass %.

The detergent composition of the present invention provides a detergent composition that has sufficient cleaning function against cosmetics and dirt, while causing low skin irritation and preventing a decrease in the skin's barrier function due to cleaning.

The composition of the present invention will be described in detail below. The cleaning composition of the present invention can exhibit the effects of the present invention by containing the component (A) an activator compound containing an acyl isethionate and/or an acylalkyl isethionate as a main component, and (B) an amine oxide amphoteric surfactant, which are described in detail below. The components of the present invention will be described in detail below.

<Component (A) Active Agent Compound>
The component (A) used in the detergent composition of the present invention is an activator compound containing acyl isethionate and/or acylalkyl isethionate, and fatty acid and/or fatty acid salt, which are by-products during the production thereof. The component (A) of the present invention contains 80 mass% or more of acyl isethionate and/or acylalkyl isethionate based on the total amount of the component (A) not including water. The component (A) of the present invention is added to improve the foaming of the detergent composition, improve the viscosity, improve the refreshing feeling, and reduce the sticky feeling. In the present invention, the component (A) may be appropriately synthesized or may be a commercially available product. Examples of commercially available products that can be used include, but are not limited to, ISELUX SFS (manufactured by Innospec Active Chemicals LLC), PUREACT I-78 (manufactured by Innospec Active Chemicals LLC), ISELUX (manufactured by Innospec Active Chemicals LLC), and Diapon CI (manufactured by NOF Corporation).

Acyl isethionate or acylalkyl isethionate is an extremely mild surfactant that is less irritating to the skin and mucous membranes than other anionic surfactants such as fatty acid soaps, alkyl sulfates, and alkyl ether sulfates. Acyl isethionate or acylalkyl isethionate can improve the lathering properties of soap at low temperatures and reduce the stiff feeling after use. As such acyl isethionate or acylalkyl isethionate, sodium salts are preferred.

In general, amino acid-based detergents are preferred from the viewpoint of reducing irritation to the skin. On the other hand, amino acid-based detergents are less irritating to the skin than soap-based detergents, but tend to have poorer foaming and foam volume. Therefore, in order to improve foaming while suppressing irritation to the skin, an activator composition containing acyl isethionate and/or acylalkyl isethionate is used.

However, when acyl isethionate or acylalkyl isethionate is produced by a production method generally known in the art, unreacted fatty acids and fatty acid salts are inevitably present as by-products in the final reaction mixture, and among these various fatty acid salts, laurate salts, which have a particularly high ratio in the fatty acid composition, are highly adsorbed to the skin and may cause skin irritation such as rough skin after washing the face. For example, when component (A) is sodium lauroyl methyl isethionate, when it is produced, unreacted sodium methyl isethionate, sodium laurate, and lauric acid are inevitably present in the final reaction mixture.

Therefore, when an isethionic acid-based surfactant is added to a cleaning agent with low skin irritation, such as an amino acid-based cleaning agent, in order to improve foaming, there is a possibility that the by-products inevitably contained in the isethionic acid-based surfactant may cause skin irritation, such as rough skin.

To overcome these drawbacks, the detergent composition of the present invention uses component (B) described in detail below in combination with component (A) described above, which allows the interaction of the components to exert a synergistic effect and offset the negative effects, making it possible to improve the situation. Therefore, the detergent composition of the present invention is excellent because it can achieve excellent foaming speed, a refreshing feeling after washing, mild skin irritation, and a dense, creamy, and bouncy foam quality.

In the present invention, the amount of component (A) is not particularly limited as long as the effect of the present invention is exhibited, but is preferably 0.1 to 50 mass %, and more preferably 5 to 30 mass %, of the entire cleaning composition. If the amount of component (A) is 0.1 mass % or more, good foaming is achieved, and if it is 50 mass % or less, the viscosity of the composition does not become too high and it does not harden even at low temperatures, so this is preferable.

<Component (B): Amine oxide type amphoteric surfactant>
The component (B) used in the detergent composition of the present invention is an amine oxide type amphoteric surfactant. The amine oxide type amphoteric surfactant is used to improve the negative effects on the detergent composition caused by the unavoidable by-products of the above component (A). The component (B) of the present invention is an amphoteric surfactant having excellent detergency and foaming power, and can improve the feeling of use of the detergent composition and the squeaky feeling of the skin that is unique to soap-based detergent compositions. Examples of amine oxide type amphoteric surfactants include lauryl dimethylamine oxide, stearyl dimethylamine oxide, oleyl dimethylamine oxide, dihydroxyethyl laurylamine oxide, coconut oil alkyl dimethylamine oxide, lauramidopropylamine oxide, and myristamidopropylamine oxide. In the present invention, the component (B) may be a commercially available product, and is not limited thereto. Specific examples of the product include "Softazoline LAO-C" manufactured by Kawaken Fine Chemical Co., Ltd. and "Amphitol 20N" manufactured by Kao Corporation. One type may be used alone, or two or more types may be used in combination. Of these, it is preferable to use lauryl dimethylamine oxide from the viewpoint of maintaining the barrier function.

In the present invention, by using component (B) in combination with component (A), it is possible to improve the negative effects caused by by-products contained in component (A) while exerting the favorable effect of improving foaming caused by component (A). Therefore, in the present invention, by combining components (A) and (B), it is possible to obtain a cleanser composition that has a sufficient cleansing function against makeup cosmetics and facial dirt, while being low in irritation to the skin and capable of suppressing a decrease in the barrier function of the skin due to cleansing.

In the present invention, the amount of component (B) is not particularly limited as long as the effect of the present invention is exhibited, but is preferably 0.01 to 10 mass %, and more preferably 0.1 to 10 mass %, based on the total cleansing composition. If it is 0.01 mass % or more, the effect of mitigating irritation to the skin is sufficiently exhibited, and if it is 10 mass % or less, the stability of the composition is good, so this is preferable.

<Component (C) Nonionic Surfactant>
The component (C) used in the detergent composition of the present invention is one or more nonionic surfactants selected from tetraglycerol monolauryl ether, polyglycerol fatty acid ester, and polyoxyethylene sorbitan monolaurate. The nonionic surfactant is used to further improve the foam quality and detergency of the detergent composition. The component (C) of the present invention may be a commercially available one, and is not limited thereto. For example, Sunether L-4 (manufactured by Taiyo Kagaku Co., Ltd.), Sunsoft M-12J (manufactured by Taiyo Kagaku Co., Ltd.), Nonion LT-280 (manufactured by NOF Corporation), etc. can be used.

<Other ingredients>
In addition to the components described above, the cleaning composition of the present invention may contain other components as appropriate, provided such components do not impair the object of the present invention. For example, surfactants other than the above-mentioned surfactants, hydrocarbons, esters, higher alcohols, polyhydric alcohols, oils, powders (pigments, colorants, resins, etc.), water, preservatives, fragrances, moisturizers, physiologically active components, salts, solvents, pearlizing agents, neutralizing agents, pH adjusters, insect repellents, enzymes, and other components may be blended.

The oils mentioned above include volatile and non-volatile oils, solvents and resins that are usually used in cosmetics, and may be liquid, paste or solid at room temperature, but liquids that are easy to handle are preferred. Specific examples of oils include higher alcohols such as cetyl alcohol, isostearyl alcohol, lauryl alcohol, hexadecyl alcohol and octyldodecanol, fatty acids such as isostearic acid, undecylenic acid and oleic acid, esters such as myristyl myristate, hexyl laurate, decyl oleate, isopropyl myristate, hexyldecyl dimethyloctanoate, glycerin monostearate, diethyl phthalate, ethylene glycol monostearate and octyl oxystearate, hydrocarbons such as liquid paraffin, petrolatum and squalane, waxes such as lanolin, reduced lanolin and carnauba wax, and oils and fats such as mink oil, cacao oil, coconut oil, palm kernel oil, camellia oil, sesame oil, castor oil and olive oil. Examples of silicones include silicone compounds such as dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, polyether-modified organopolysiloxane, fluoroalkyl-polyoxyalkylene-co-modified organopolysiloxane, alkyl-modified organopolysiloxane, dimethiconol, terminal-modified organopolysiloxane, fluorine-modified organopolysiloxane, amodimethicone, amino-modified organopolysiloxane, silicone gel, acrylic silicone, trimethylsiloxysilicate, silicone RTV rubber, and fluorine-modified silicone resin.

Examples of the powder include pigments such as Red No. 201, Yellow No. 4, Blue No. 1, and Black No. 401, lake pigments such as Yellow No. 4 A1 Lake and Yellow No. 203 Ba Lake, nylon powder, silk powder, silicone powder, cellulose powder, spherical silicone elastomer powder, polymers such as polyethylene powder, colored pigments such as yellow iron oxide, red iron oxide, chromium oxide, carbon black, ultramarine, and Prussian blue, white pigments such as zinc oxide and titanium oxide, extender pigments such as talc, mica, sericite, and kaolin, pearl pigments such as titanium mica, metal salts such as barium sulfate, calcium carbonate, magnesium carbonate, and magnesium silicate, inorganic powders such as silica and alumina, bentonite, smectite, and boron nitride. There are no particular limitations on the shape of these powders (spherical, rod-like, needle-like, plate-like, irregular, flaky, spindle-like, etc.).

The powder may or may not have been previously surface-treated by a conventional surface treatment such as a fluorine compound treatment, silicone treatment, silicone resin treatment, pendant treatment, silane coupling agent treatment, titanium coupling agent treatment, oil treatment, N-acylated lysine treatment, polyacrylic acid treatment, metal soap treatment, amino acid treatment, inorganic compound treatment, plasma treatment, mechanochemical treatment, etc.

Examples of the above solvents include purified water, ethanol, light liquid isoparaffin, lower alcohols, ethers, LPG, fluorocarbons, N-methylpyrrolidone, fluoroalcohols, volatile linear silicones, next-generation fluorocarbons, etc.

The above-mentioned physiologically active ingredients include substances that impart some kind of physiological activity to the skin when applied to the skin. Examples include anti-inflammatory agents, anti-aging agents, UV protection agents, tightening agents, antioxidants, moisturizing agents, blood circulation promoters, antibacterial agents, bactericides, drying agents, cooling agents, warming agents, vitamins, amino acids, wound healing promoters, irritation relief agents, analgesics, cell activators, enzyme components, etc. The above-mentioned physiologically active ingredients include natural plant extracts, dried extracts, herbal ingredients, compounds, etc., of which natural plant extracts, seaweed extracts, and herbal ingredients are particularly preferred from the standpoint of safety.

Examples of the above-mentioned natural plant extracts, seaweed extracts, and herbal medicines include angelica tree extract, amacha extract, althea extract, aloe extract, apricot extract, ginkgo extract, fennel extract, oolong tea extract, angelica tree extract, scutellaria extract, phellodendron bark extract, hypericum extract, watercress extract, orange extract, seawater dried product, seaweed extract, hydrolyzed wheat powder, hydrolyzed silk, chamomile extract, carrot extract, artemisia capillaris extract, licorice extract, kakyoku extract, kiwi extract, cucumber extract, gardenia extract, kumazasa extract, sophora flavescens extract, walnut extract, grapefruit extract, chlorella extract, mulberry extract, black tea extract, yeast extract, collagen, salvia extract, soapwort extract, hawthorn extract, rehmannia extract, lithospermum extract, perilla extract, linden extract, peony extract, and white gnats. Examples of such extracts include Japanese whiting, horsetail extract, ivy extract, hawthorn extract, elderberry extract, yarrow extract, peppermint extract, sage extract, cnidium rhizome extract, swertia britannica extract, taiso extract, thyme extract, tea extract, clove extract, tangerine peel extract, angelica extract, peach kernel extract, dokudami extract, tomato extract, natto extract, carrot extract, garlic extract, wild rose extract, honey, witch hazel extract, Japanese knotweed extract, bisabolol, loquat extract, poria extract, propolis, loofah extract, peppermint extract, linden extract, hop extract, horse chestnut extract, soapberry extract, melissa extract, peach extract, saxifrage extract, yuzu extract, mugwort extract, lavender extract, lemon extract, astragalus extract, rosemary extract, and royal jelly extract.

In addition, examples of ingredients other than the above-mentioned natural plant extract ingredients, seaweed extract ingredients, and herbal medicine ingredients include biopolymers such as deoxyribonucleic acid, mucopolysaccharides, sodium hyaluronate, sodium chondroitin sulfate, collagen, elastin, chitin, chitosan, and hydrolyzed eggshell membrane, moisturizing ingredients such as amino acids, sodium lactate, urea, sodium pyrrolidone carboxylate, betaine, and whey, oily ingredients such as sphingolipids, ceramide, cholesterol, cholesterol derivatives, and phospholipids, anti-inflammatory agents such as ε-aminocaproic acid, glycyrrhizic acid, β-glycyrrhetinic acid, lysozyme chloride, guaiazulene, and hydrocortisone, vitamins (A, B2, B6, C, D, E), vitamins such as calcium pantothenate, biotin, nicotinamide, vitamin C ester, active ingredients such as allantoin, diisopropylamine dichloroacetate, 4-aminomethylcyclohexanecarboxylic acid, antioxidants such as tocopherol, carotenoids, flavonoids, tannins, lignans, saponins, cell activators such as α-hydroxy acids, β-hydroxy acids, blood circulation promoters such as γ-oryzanol, vitamin E derivatives, bactericides such as isopropylmethylphenol, triclosan, hinokitiol, benzalkonium chloride, cooling agents such as 1-menthol, peppermint oil, wound healing agents such as retinol, retinol derivatives, etc. The oils mentioned above include volatile and non-volatile oils, solvents and resins that are usually used in cosmetics, and may be liquids, pastes or solids at room temperature, but liquids that are easy to handle are preferred. Specific examples of the oil agent include higher alcohols such as cetyl alcohol, isostearyl alcohol, lauryl alcohol, hexadecyl alcohol, and octyldodecanol; fatty acids such as isostearic acid, undecylenic acid, and oleic acid; esters such as myristyl myristate, hexyl laurate, decyl oleate, isopropyl myristate, hexyldecyl dimethyloctanoate, glycerin monostearate, diethyl phthalate, ethylene glycol monostearate, and octyl oxystearate; hydrocarbons such as liquid paraffin, petrolatum, and squalane; waxes such as lanolin, reduced lanolin, and carnauba wax; and oils and fats such as mink oil, cacao oil, coconut oil, palm kernel oil, camellia oil, sesame oil, castor oil, and olive oil. Further, examples of silicones include silicone compounds such as dimethylpolysiloxane, methylhydrogenpolysiloxane, methylphenylpolysiloxane, polyether-modified organopolysiloxane, fluoroalkyl-polyoxyalkylene-co-modified organopolysiloxane, alkyl-modified organopolysiloxane, dimethiconol, terminal-modified organopolysiloxane, fluorine-modified organopolysiloxane, amodimethicone, amino-modified organopolysiloxane, silicone gel, acrylic silicone, trimethylsiloxysilicate, silicone RTV rubber, and fluorine-modified silicone resin.

The above powders include, for example, pigments such as Red No. 201, Yellow No. 4, Blue No. 1, and Black No. 401; lake pigments such as Yellow No. 4 A1 Lake and Yellow No. 203 Ba Lake; nylon powder, silk powder, silicone powder, cellulose powder, spherical silicone elastomer powder, polymers such as polyethylene powder, colored pigments such as yellow iron oxide, red iron oxide, chromium oxide, carbon black, ultramarine, and Prussian blue; white pigments such as zinc oxide and titanium oxide; extender pigments such as talc, mica, sericite, and kaolin; pearl pigments such as titanium mica; metal salts such as barium sulfate, calcium carbonate, magnesium carbonate, and magnesium silicate; inorganic powders such as silica and alumina; bentonite, smectite, and boron nitride. There are no particular limitations on the shape of these powders (spherical, rod-like, needle-like, plate-like, irregular, flaky, spindle-like, etc.).

The powder may or may not have been previously surface-treated by conventional surface treatments such as fluorine compound treatment, silicone treatment, silicone resin treatment, pendant treatment, silane coupling agent treatment, titanium coupling agent treatment, oil treatment, N-acylated lysine treatment, polyacrylic acid treatment, metal soap treatment, amino acid treatment, inorganic compound treatment, plasma treatment, mechanochemical treatment, etc.

Examples of the above solvents include purified water, ethanol, light liquid isoparaffin, lower alcohols, ethers, LPG, fluorocarbons, N-methylpyrrolidone, fluoroalcohols, volatile linear silicones, next-generation fluorocarbons, etc.

The above-mentioned physiologically active ingredients include substances that impart some physiological activity to the skin when applied to the skin. For example, anti-inflammatory agents, anti-aging agents, UV protection agents, firming agents, antioxidants,
Examples of the physiologically active ingredient include moisturizing agents, blood circulation promoters, antibacterial agents, disinfectants, drying agents, cooling agents, warming agents, vitamins, amino acids, wound healing promoters, irritation mitigating agents, analgesics, cell activators, enzyme components, etc. Examples of the physiologically active ingredient include natural plant extracts, dried extracts, herbal ingredients, compounds, etc., and among these, natural plant extracts, seaweed extracts, and herbal ingredients are particularly preferred in terms of safety.

Examples of the above-mentioned natural plant extracts, seaweed extracts, and herbal medicine ingredients include, for example, angelica extract, amacha extract, althea extract, aloe extract, apricot extract, ginkgo extract, fennel extract, oolong tea extract, angelica tree extract, scutellaria extract, phellodendron bark extract, hypericum extract, Dutch mustard extract, orange extract, seawater dried product, seaweed extract, hydrolyzed wheat powder, hydrolyzed silk, chamomile extract, carrot extract, artemisia capillaris extract, licorice extract, kakyoku extract, kiwi extract, cucumber extract, gardenia extract, kumazasa extract, sophora flavescens extract, walnut extract, grapefruit extract, chlorella extract, mulberry extract, black tea extract, yeast extract, collagen, salvia extract, soapwort extract, hawthorn extract, rehmannia extract, lithospermum extract, perilla extract, linden extract, peony extract, and white gnats. Examples of such extracts include Japanese whiting, horsetail extract, ivy extract, hawthorn extract, elderberry extract, yarrow extract, peppermint extract, sage extract, cnidium rhizome extract, swertia britannica extract, taiso extract, thyme extract, tea extract, clove extract, tangerine peel extract, angelica extract, peach kernel extract, dokudami extract, tomato extract, natto extract, carrot extract, garlic extract, wild rose extract, honey, witch hazel extract, Japanese knotweed extract, bisabolol, loquat extract, poria extract, propolis, loofah extract, peppermint extract, linden extract, hop extract, horse chestnut extract, soapberry extract, melissa extract, peach extract, saxifrage extract, yuzu extract, mugwort extract, lavender extract, lemon extract, astragalus extract, rosemary extract, and royal jelly extract.

In addition, ingredients other than the above-mentioned natural plant extract ingredients, seaweed extract ingredients, and herbal ingredients include, for example, biopolymers such as deoxyribonucleic acid, mucopolysaccharides, sodium hyaluronate, sodium chondroitin sulfate, collagen, elastin, chitin, chitosan, and hydrolyzed eggshell membrane, moisturizing ingredients such as amino acids, sodium lactate, urea, sodium pyrrolidone carboxylate, betaine, and whey, oily ingredients such as sphingolipids, ceramide, cholesterol, cholesterol derivatives, and phospholipids, anti-inflammatory agents such as ε-aminocaproic acid, glycyrrhizic acid, β-glycyrrhetinic acid, lysozyme chloride, guaiazulene, and hydrocortisone, vitamins (A, B2, B6, C, D, E), vitamins such as calcium pantothenate, biotin, nicotinamide, vitamin C ester, active ingredients such as allantoin, diisopropylamine dichloroacetate, 4-aminomethylcyclohexanecarboxylic acid, antioxidants such as tocopherol, carotenoids, flavonoids, tannins, lignans, saponins, cell activators such as α-hydroxy acids and β-hydroxy acids, blood circulation promoters such as γ-oryzanol and vitamin E derivatives, bactericides such as isopropylmethylphenol, triclosan, hinokitiol, and benzalkonium chloride, cooling agents such as 1-menthol and peppermint oil, and wound healing agents such as retinol and retinol derivatives.

<Cleaning agent composition>
The detergent composition of the present invention can be produced according to a conventional method. Examples of the detergent composition of the present invention include face wash foam, body soap, cleansing agent, etc. The dosage form can be selected arbitrarily depending on the purpose. That is, examples include liquid, cream, gel, emulsion, aerosol, etc.

The present invention will now be described in detail with reference to examples, but is not limited thereto. Prior to the examples, the test and evaluation methods employed in each example will be described.

Examples 1 to 11, Comparative Examples 1 to 3
(Sample Preparation)
A cleaning composition having the composition shown in Table 1 below was prepared by a conventional method.
The present invention will be described in more detail below with reference to examples, but the present invention is not limited to these examples. The methods for evaluating the cleaning compositions in the examples and comparative examples are as follows, and the blending amounts of each component are expressed in "mass %" unless otherwise specified.

(Evaluation method 1: Barrier retention ability evaluation)
A panel of 10 men and women used the cleansing compositions shown in Table 1 below for two weeks, and the moisture content of the face and cheeks was measured before and after use using a Corneometer CM825 (manufactured by Courage + Khazaka).
<Barrier retention value>
Barrier retention ability value=(amount of moisture on the face and cheeks after using the cleansing composition for 2 weeks)÷(amount of moisture on the face and cheeks before using the cleansing composition)
<Criteria>
If the barrier retention value calculated as described above exceeded 1.1, it was determined that the stratum corneum barrier function was maintained and skin condition was improved by use of the cleansing composition.

(Evaluation method 2: Irritation evaluation)
A panel of 20 experts with sensitive skin used the cleansing compositions of the Examples and Comparative Examples and evaluated their irritation according to the following criteria: The irritation sensation refers to a temporary tingling sensation felt immediately after cleansing and up to 10 minutes later.
<Evaluation criteria>
◎: 16 or more out of 20 people answered that there was no irritation. ○: 11 to 15 out of 20 people answered that there was no irritation. △: 6 to 10 out of 20 people answered that there was no irritation. ×: 5 or less out of 20 people answered that there was no irritation.

(Evaluation method 3: Foaming and foam volume evaluation)
A panel of 10 experts used the cleaning compositions of the Examples and Comparative Examples and performed a sensory evaluation of foaming and foam volume in accordance with the following evaluation criteria.
<Evaluation criteria>
◎: Very good The number of subjects who answered that the foam is quick and has a lot of foam is 8 or more. ○: Good The number of subjects who answered that the foam is quick and has a lot of foam is 6 or more but less than 8. △: Somewhat poor The number of subjects who answered that the foam is quick and has a lot of foam is 4 or more but less than 6. ×: Poor The number of subjects who answered that the foam is quick and has a lot of foam is less than 4.

(Evaluation method 4: Storage stability evaluation)
The sample was stored in a thermostatic chamber at 50° C. for 30 days, and the presence or absence of precipitation of the surfactant and phase separation was visually observed, and the storage stability was evaluated according to the following criteria.
<Evaluation criteria>
◯: The surfactant did not precipitate and no phase separation occurred even after storage for 30 days. △: The surfactant precipitated and phase separation was observed after 30 days. ×: The surfactant precipitated and phase separation occurred immediately after preparation of the cleaning composition.

(Evaluation results)
The compositions and evaluation results of Examples 1 to 11 and Comparative Examples 1 to 3 are shown in Table 1 below.

Details of the component (A) used in the examples and comparative examples are shown below.
(*1) Diapon CI (manufactured by NOF Corporation)
(*2) ISELUX (Innospec Active Chemicals LLC)

As is clear from Table 1, the cleaning compositions of Examples 1 to 11 according to the present invention all had higher foaming performance and stability than the cleaning compositions of Comparative Examples 1 to 3, and furthermore, they were not irritating and improved the skin barrier retention ability.

Other formulation examples 1 to 3 of the cleansing composition of the present invention are described below. The cleansing compositions of these formulation examples were prepared by conventional methods, and evaluated in the same manner as in the above examples for skin barrier retention ability, irritation, foaming/foam volume, and storage stability. All of these showed excellent performance, similar to the examples.

Formulation Example 1 Foam-type face wash Blend amount (mass%)
Raw material mainly consisting of sodium lauroyl methyl isethionate (ISELUX) 10.0
Sodium lauroyl methylalanine 8.0
Lauryl dimethylamine oxide 0.5
PEG-80 Sorbitan Laurate 2.0
Polyglyceryl-10 Laurate 1.0
Glycerin 5.0
Polyquaternium-7 0.1
Phenoxyethanol 0.2
EDTA-2Na 0.05
Citric acid, appropriate amount Flavoring, appropriate amount Purified water, balance

Formulation Example 2 Body wash Blend amount (mass%)
Raw material mainly consisting of sodium lauroyl methyl isethionate (ISELUX) 10.0
Sodium lauroyl aspartate 10.0
Cocoyl glycine K 5.0
Sodium Lauroyl Methylalanine 2.0
Lauryl dimethylamine oxide 1.0
Dimethyldiallylammonium chloride/acrylamide copolymer 0.5
Shea butter 0.5
Ceramide 2 0.5
Ceramide 5 0.5
Lauroyl glutamate di(phytosteryl/octyldodecyl) 0.5
Polyquaternium-67 0.1
N-acetylglucosamine 0.5
Sodium hyaluronate 0.5
DPG 0.5
Glycerin 5.0
Phenoxyethanol 0.2
EDTA-2Na 0.05
Citric acid, appropriate amount Flavoring, appropriate amount Purified water, balance

Formulation Example 3 Facial cleanser Formulated amount (mass%)
Raw material mainly consisting of sodium lauroyl methyl isethionate (ISELUX) 10.0
Sodium methyl cocoyl taurate 10.0
Cocoyl glycine K 15.0
Lauryl dimethylamine oxide 2.0
Dimethyldiallylammonium chloride/acrylamide copolymer 0.5
Cocamide DEA 2.0
Ceramide 2 0.5
Ceramide 5 0.5
Lauroyl glutamate di(phytosteryl/octyldodecyl) 0.5
Polyquaternium-67 0.1
N-acetylglucosamine 0.5
Sodium hyaluronate 0.5
Glycerin 30.0
Phenoxyethanol 0.2
EDTA-2Na 0.05
Citric acid, appropriate amount Flavoring, appropriate amount Purified water, balance

Claims (2)

A cleaning composition comprising the following components (A) and (B), wherein the blending amount of the component (A) is 0.1 to 50 mass % based on the entire cleaning composition, the blending amount of the component (B) is 0.1 to 10 mass % based on the entire cleaning composition, and the ratio of the component (A) to the component (B) ((A)/(B)) is 0.33 to 500:
(A) An active agent containing an acylalkylisethionate and a fatty acid and/or a fatty acid salt that is a by-product during the production of the acylalkylisethionate, the content of the acylalkylisethionate being 80% by mass or more and less than 100% by mass based on the total amount of the active agent excluding water. (B) An amine oxide type amphoteric surfactant. The cleaning composition according to claim 1, further comprising component (C) one or more selected from tetraglycerin monolauryl ether, polyglycerin fatty acid ester, and polyoxyethylene sorbitan monolaurate.