JP2024019604A - Skin cleansing composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skin cleansing composition that has comprehensively excellent properties of suppressing a slimy feeling of skin just after washed, and maintaining a moisture retention feeling and a flexible feeling of it.

SOLUTION: A skin cleansing composition contains (A) an amino acid-based surfactant, (B) amphiphilic ester, and (C) lecithin and/or lysolecithin. The skin cleansing composition has comprehensively excellent properties of suppressing a slimy feeling of skin just after washed, and maintaining a moisture retention feeling and a flexible feeling of it.

SELECTED DRAWING: None

COPYRIGHT: (C)2024,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a skin cleansing composition that provides overall excellent smoothness, moisturizing, and softness on the skin after washing.

BACKGROUND ART Various skin cleansing compositions such as facial cleansers, body soaps, and shampoos are provided as products for cleaning the skin and keeping the skin clean. Skin cleansing compositions are required not only to have good foaming properties and cleansing power, but also to have a good feeling of use.

As one of the characteristics of good usability, the smoothness (smoothness) of the skin is a characteristic that gives a feeling of good cleansing, and is particularly important. For example, Patent Document 1 discloses that a cleaning composition containing a fatty acid soap, an amphoteric surfactant or an alkanolamide type nonionic surfactant, and an extract of Mokutsu or Astragalus leaves the skin after washing. It is described that it has excellent firmness and smooth skin feeling. Patent Document 2 discloses that a solid detergent composition containing a fatty acid salt, an acyl isethionate, and a solid fat that is at least one selected from waxes, hydrocarbons, and glycerides having a melting point of 30 to 100°C is used for rinsing. It is described that it has an excellent smooth feeling over time. Patent Document 3 describes that a skin cleansing composition containing an anionic surfactant, an alkyl ether carboxylic acid or its salt, 2-ethylhexylglyceryl ether, and water provides an excellent smooth feeling on the skin after washing. ing.

JP2000-273496 JP2008-189872 JP2015-124214

Skin cleansing compositions that require a smooth and smooth feeling on the skin provide a refreshing feeling after washing, but the skin tends to lose its moisturizing and soft feeling after use. In other words, conventional skin cleansing compositions have not been able to provide a smooth, smooth feeling on the skin after use, as well as a moist, moisturizing feeling and a plump, supple feeling. It cannot be said that it has a good feel.

Accordingly, an object of the present invention is to provide a skin cleansing composition that has comprehensively excellent smoothness, moisturizing feeling, and softness feeling on the skin after washing.

As a result of extensive studies, the present inventor has found that, in a skin cleansing composition, an amphiphilic ester and a cationized hyaluronic acid and/or a salt thereof are blended together with an amino acid surfactant, and ceramides are further blended. It has been found that the skin after washing has a smooth and smooth feeling, as well as a moisturizing feeling and a plump and soft feeling. The present invention was completed through further studies based on this knowledge.

That is, the present invention provides the inventions of the following aspects.
Item 1. A skin cleansing composition comprising (A) an amino acid surfactant, (B) an amphipathic ester, and (C) a ceramide selected from the group consisting of ceramide, pseudoceramide, and glycoceramide.
Item 2. Item 1, wherein the component (B) is selected from the group consisting of dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester, dicarboxylic acid dialkoxyalkyl ester, and polyglyceryl-10 (eicosandioic acid/tetradecanedioic acid). skin cleansing composition.
Item 3. Item 3. The skin cleansing composition according to Item 2, wherein the dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester is cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol.
Item 4. The skin cleansing composition according to any one of claims 1 to 3, wherein the component (C) is a glycoceramide.
Item 5. Item 5. The skin cleansing composition according to any one of Items 1 to 4, further comprising (D) lecithin and/or lysolecithin.

According to the skin cleansing composition of the present invention, it is possible to comprehensively exhibit a smooth feeling, a moisturizing feeling, and a soft feeling on the skin after washing.

The skin cleansing composition of the present invention comprises (A) an amino acid surfactant (hereinafter also referred to as component (A)), (B) an amphipathic ester (hereinafter also referred to as component (B)), and (C) It is characterized by containing a ceramide selected from the group consisting of ceramide, pseudoceramide, and glycoceramide (hereinafter also referred to as component (C)). Hereinafter, the skin cleansing composition of the present invention will be explained in detail.

(A) Amino acid surfactant The skin cleansing composition of the present invention contains an amino acid surfactant as component (A). By using an amino acid surfactant, the skin cleansing composition can exhibit excellent cleaning power while reducing skin irritation. Furthermore, by coexisting component (A) with component (B) and component (C), it is possible to obtain a good moisturizing feeling and/or soft feeling on the skin after washing.

Examples of the amino acid-based surfactant include amino acid-based anionic surfactants and amino acid-based amphoteric surfactants from the viewpoint of obtaining favorable detergency, skin irritation reduction properties, moisturizing feeling, and/or soft feeling. As the amino acid surfactant, either an amino acid anionic surfactant or an amino acid amphoteric surfactant may be used, or both may be used in combination. Among these amino acid surfactants, amino acid-based anionic surfactants can be mentioned from the viewpoint of obtaining a more preferable smooth feeling and moisturizing feeling, and amino acid-based amphoteric surfactants are preferably used from the viewpoint of obtaining a preferable soft feeling. .

Examples of the amino acid-based anionic surfactant used in the present invention include carboxylic acid-type amino acid-based anionic surfactants and sulfonic acid-type amino acid-based anionic surfactants.

Examples of carboxylic acid type amino acid-based anionic surfactants include N-acyl groups having saturated or unsaturated N-acyl groups having 8 to 24 carbon atoms such as octanoyl group, decanoyl group, lauroyl group, myristoyl group, palmitoyl group, and cocoyl group. - Acyl amino acids. Examples of the N-acylamino acid in the carboxylic acid type amino acid-based anionic surfactant include N-acylsarcosine, N-acylaspartic acid, N-acylglutamic acid, N-acyl-N-methyl-β-alanine, and the like. More specific carboxylic acid type amino acid-based anionic surfactants include N-lauroyl sarcosine, cocoyl sarcosine, N-lauroyl aspartic acid, cocoyl aspartic acid, N-lauroyl glutamic acid, cocoyl glutamic acid, and N-lauroyl-N-methyl. -β-alanine, cocoylmethylalanine, etc.

Examples of sulfonic acid type amino acid-based anionic surfactants include N-acyl groups having a saturated or unsaturated N-acyl group having 8 to 24 carbon atoms such as an octanoyl group, a decanoyl group, a lauroyl group, a myristoyl group, a palmitoyl group, and a cocoyl group. -acyl-N-methyltaurine. More specific sulfonic acid type amino acid-based anionic surfactants include N-myristoyl-N-methyltaurine, N-lauroyl-N-methyltaurine, cocoylmethyltaurine, and the like.

Note that these amino acid-based anionic surfactants may be in the form of salts, such as alkali metal salts such as sodium salts and potassium salts; triethanolamine (TEA) salts; ammonium salts, etc. be able to.

Among these amino acid-based anionic surfactants, N-lauroyl aspartic acid, N-lauroyl aspartic acid,
Cocoyl glutamic acid, N-lauroyl-N-methyl-β-alanine, cocoyl methylalanine, and cocoyl methyl taurine are mentioned, and more preferred are sodium N-lauroyl aspartate, cocoyl glutamate triethanolamine, and N-lauroyl-N-methyl. - Sodium β-alanine, sodium cocoylmethylalanine, and sodium cocoylmethyltaurate. From the viewpoint of obtaining better detergency, more preferred examples include sodium N-lauroyl aspartate, triethanolamine cocoylglutamate, sodium N-lauroyl-N-methyl-β-alanine, and sodium cocoylmethylalanine. From the viewpoint of obtaining a more favorable moisturizing feeling, sodium N-lauroyl aspartate is more preferably used.

As the amino acid-based anionic surfactant, one type from the above-mentioned carboxylic acid-type amino acid-based anionic surfactants and sulfonic acid-type amino acid-based anionic surfactants may be used alone, or two types may be used. The above may be used in combination.

These amino acid-based anionic surfactants may be used alone or in combination of two or more.

Examples of the amino acid-based amphoteric surfactants used in the present invention include amidobetaine-type amphoteric surfactants and alkylbetaine-type amphoteric surfactants. As the amino acid-based amphoteric surfactant, an amidobetaine-type amphoteric surfactant is preferably used from the viewpoint of achieving better detergency, skin irritation-reducing properties, moisturizing feeling, and/or softer feeling.

Amidobetaine type amphoteric surfactants have the general formula R ¹ CO-NH-(CH ₂ ) _n -N ⁺ (CH ₃
) ₂ CH ₂ CO ₂ ^- (wherein, R ¹ CO- group is a saturated or unsaturated N- group having 8 to 24 carbon atoms such as octanoyl group, decanoyl group, lauroyl group, myristoyl group, palmitoyl group, cocoyl group, etc.) represents an acyl group, and n represents an integer of 2 to 8), and from the viewpoint of achieving favorable detergency, skin irritation reducing properties, moisturizing feeling, and/or soft feeling, cocamide is preferably used. Examples include propyl betaine, lauric acid amidopropyl betaine, and more preferably cocamidopropyl betaine.

The alkyl betaine type amphoteric surfactant has the general formula R ² -N ⁺ (CH ₃ ) ₂ CH ₂ CO ₂ ^- (wherein R ² group is an octyl group, a decyl group, a lauryl group, a myristyl group, a palmityl group, It is a compound represented by a saturated or unsaturated alkyl group having 8 to 24 carbon atoms such as a coconut oil fatty acid alkyl group, and is a compound represented by the following formula, from the viewpoint that it can preferably have detergency, skin irritation reduction property, moisturizing feeling, and/or soft feeling. Among these, preferable examples include lauryl dimethyl acetate betaine and tetradecel dimethylamino acetate betaine.

These amino acid-based amphoteric surfactants may be used alone or in combination of two or more.

As described below, the skin cleansing composition of the present invention may contain a surfactant other than the component (A), but when the component (D) is included, further improved flexibility can be obtained. From this point of view, it is preferable that no surfactant other than component (A) be included.

The content of component (A) in the skin cleansing composition of the present invention is not particularly limited and may be determined as appropriate depending on the cleaning power to be imparted, but is, for example, 0.025 to 20% by weight, preferably Examples include 0.025 to 12% by weight. In addition, the skin cleansing composition of the present invention effectively exhibits cleaning power even when the content of component (A) is small because component (A) coexists with component (B) described below. be able to. From this point of view, in order to further reduce skin irritation, the upper limit of the above range for the content of component (A) is, for example, 10% by weight or less, preferably 6% by weight or less, more preferably 2% by weight. The following may be mentioned. In addition, from the viewpoint of obtaining better detergency, the lower limit of the above range of the content of component (A) is preferably 0.05% by weight or more, more preferably 0.1% by weight or more, and even more preferably is 0.5% by weight or more, more preferably 1% by weight or more, particularly preferably 1.5% by weight or more. In addition, as described below, the skin cleansing composition of the present invention may contain surfactants other than component (A), but when containing surfactants other than component (A), component (A) It is preferable that the total content of surfactants other than component (A) is adjusted to be within the above range.

(B) Amphipathic Ester The skin cleansing composition of the present invention contains an amphipathic ester as the (B) component. By allowing component (B) to coexist with component (A) and component (C), it is possible to obtain a good moisturizing feeling and soft feeling on the skin after washing.

In addition, although component (B) does not exhibit a cleansing effect by itself, by coexisting with component (A), the cleansing power of the skin cleansing composition can be improved.

In the present invention, the amphipathic ester dissolves at room temperature in an amount of 2% by mass or more in ion-exchanged water whose conductivity is adjusted to 70 to 110 μs/m as measured by the method specified in the Japanese Pharmacopoeia General Test Methods, and It also dissolves in the oil agent isotridecyl isononanoate (Sarakos 913, manufactured by Nisshin Oilio Group) at room temperature (25° C.) in an amount of 10% by mass or more, and ester surfactants are excluded.

Amphiphilic esters are not particularly limited, but from the viewpoint of obtaining better moisturizing feeling and detergency, dicarboxylic acid bis(polyoxyalkylene alkyl ether) esters, dicarboxylic acid dialkoxyalkyl esters, and (eicosanedioic acid/tetradecane) It is preferably selected from the group consisting of polyglyceryl-10 (diacid). As the amphiphilic ester, one of dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester, dicarboxylic acid dialkoxyalkyl ester, and polyglyceryl-10 (eicosandioic acid/tetradecanedioic acid) is used alone. Alternatively, two or more types may be used in combination. Among these amphiphilic esters, dicarboxylic acid bis(polyoxyalkylene alkyl ether) esters are more preferred from the viewpoint of obtaining better moisturizing feeling and detergency.

The dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester used in the present invention is a diester compound of dicarboxylic acid and polyoxyalkylene alkyl ether. Specific examples of dicarboxylic acids constituting the diester compound of dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester include oxalic acid, malonic acid, succinic acid, tartaric acid, malic acid, glutaric acid, adipic acid, pemelic acid, Examples include suberic acid, azelaic acid, sebacic acid, aspartic acid, glutamic acid, acetone dicarboxylic acid, phthalic acid, and cyclohexane-1,4-dicarboxylic acid. Examples of the polyoxyalkylene alkyl ether constituting the diester compound include polyoxyethylene monoalkyl ether, and more specifically, diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, etc. It will be done.

Among these dicarboxylic acid bis(polyoxyalkylene alkyl ether) esters, diester compounds of cyclohexane-1,4-dicarboxylic acid and diethylene glycol monoethyl ether are preferred from the viewpoint of obtaining better moisturizing feeling and detergency, Specifically, the INCI name (International Cosmetic Ingredient Dictionary and Handbook, 13th edition, Volume 1, CTFA,
2010, p. 331): BIS-ETHOXYDIGLYCOL CYCLOHEX
Cyclohexane-1,4-, written as ANE 1,4-DICARBOXYLATE
A compound called bisethoxydiglycol dicarboxylate and a diester compound of succinic acid and diethylene glycol monoethyl ether, specifically, INCI name (International Cosmetic Ingredient Dictionary and Handbook, 13th edition, Volume 1, CTFA, 2010, p.331-33
2): A compound called bisethoxydiglycol succinate, which is represented by BIS-ETHOXYDIGLYCOL SUCCINATE, is mentioned.

Further, in the present invention, specific examples of the bisethoxydiglycol cyclohexane-1,4-dicarboxylate include "Neosolue-Aqulio (trade name)" manufactured by Nippon Fine Chemical Co., Ltd., and the like. Further, as a specific example of the bisethoxydiglycol succinate, for example, "Hyakuo Star DCS (trade name)" manufactured by Kyoku Alcohol Kogyo Co., Ltd. can be mentioned.

These dicarboxylic acid bis(polyoxyalkylene alkyl ether) esters may be used alone or in combination of two or more.

The dicarboxylic acid dialkoxyalkyl ester used in the present invention is a diester compound of dicarboxylic acid and alkoxy alcohol. Specific examples of dicarboxylic acids constituting the diester compound of dialkoxyalkyl dicarboxylate include oxalic acid, malonic acid, succinic acid, tartaric acid, malic acid, glutaric acid, adipic acid, pemeric acid, suberic acid, azelaic acid, Examples include sebacic acid, aspartic acid, glutamic acid, acetone dicarboxylic acid, phthalic acid, and cyclohexane-1,4-dicarboxylic acid. Furthermore, examples of the alkoxy alcohol constituting the diester compound include 2-methoxyethanol and 2-ethoxyethanol.

Among these dicarboxylic acid dialkoxyalkyl esters, a diester compound of succinic acid and 2-ethoxyethanol, specifically diethoxyethyl succinate, is preferable from the viewpoint of obtaining better skin irritation reducing properties and detergency. can be mentioned.

These dicarboxylic acid dialkoxyalkyl esters may be used alone or in combination of two or more.

The polyglyceryl-10 (eicosanedioic acid/tetradecanedioic acid) used in the present invention is not particularly limited, but includes, for example, "Neosolue-Aqua (trade name)" and "Neosolue-AquaS (trade name)" manufactured by Nippon Fine Chemical Co., Ltd. Product name)" etc.

The content of component (B) in the skin cleansing composition of the present invention is not particularly limited, but may be, for example, 0.2% by weight or more. From the viewpoint of obtaining better moisturizing feeling and detergency, the content of component (B) is preferably 0.4% by weight or more. From the viewpoint of obtaining a smoother feel, the content of component (B) is more preferably 0.5% by weight or more. The upper limit of the above range of the content of component (B) is not particularly limited, but from the viewpoint of stability of the skin cleansing composition, for example, 5% by weight or less, preferably 3% by weight or less, more preferably 2% by weight. Below, more preferably 1% by weight or less is mentioned.

In the skin cleansing composition of the present invention, the ratio of component (A) to component (B) is not particularly limited and is determined by each of the above contents, but from the viewpoint of obtaining better moisturizing feeling and cleansing power, For example, the amount of component (B) per 1 part by weight of component (A) is 0.01 to 100 parts by weight, preferably 0.01 to 10 parts by weight, more preferably 0.02 to 5 parts by weight, and still more preferably 0.01 to 100 parts by weight. 03 to 1 part by weight, particularly preferably 0.03 to 0.5 part by weight.

(C) Ceramides The skin cleansing composition of the present invention contains ceramides as the (C) component. By combining component (C) with component (A) and component (B), it is possible to comprehensively improve the smooth feeling, moisturizing feeling, and soft feeling.

Ceramides refer to ceramide, pseudoceramide, and/or glycoceramide. In the present invention, as component (C), any one of ceramide, pseudoceramide, and glycoceramide may be used, or a combination of multiple types may be used.

Ceramide is a type of sphingolipid, and is a component known as a general term for a group of compounds in which a long-chain fatty acid is bonded with an amide bond to the amino group of sphingosine. Ceramides are classified into ceramide 1, ceramide 2, ceramide 3, ceramide 4, ceramide 5, ceramide 6I, ceramide 6II, ceramide 7, and ceramide due to differences in the structure of sphingosine (such as the structure of N-acyl group) and the structure of long chain fatty acids. 8, Ceramide 9, Ceramide 10, etc. These ceramides may be used alone or in combination of two or more. Among these ceramides, ceramide 1, ceramide 2, and ceramide 3 are preferred.

The origin of the ceramide used in the present invention is not particularly limited and may be determined as appropriate depending on the type of ceramide. For example, it may be extracted from animals or plants, obtained by microbial fermentation, or chemically It may be any one that is synthesized.

Pseudoceramide is a ceramide analog similar in structure and properties to ceramide, and specifically, a compound selected from a compound represented by the following general formula (I) and a compound represented by general formula (II). Can be mentioned.

In formula (I), R ¹¹ represents a hydrocarbon group having 10 to 26 carbon atoms, R ¹² represents a hydrocarbon group having 9 to 25 carbon atoms, X represents -(CH ₂ ) _n -, and n is Represents an integer from 2 to 6. The hydrocarbon group preferably includes an alkyl group or an alkenyl group. A specific example of the pseudoceramide represented by formula (I) is N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecanamide.

In formula (II), R ²¹ and R ²² represent an optionally hydroxylated hydrocarbon group having 1 to 40 carbon atoms, which may be the same or different, and R ²³ represents an alkylene group having 1 to 6 carbon atoms or a single represents a bond, and R ²⁴ represents a hydrogen atom, an alkoxy group having 1 to 12 carbon atoms, or a 2,3-dihydroxypropyloxy group. However, when R ²³ is a single bond, R ²⁴ is a hydrogen atom. The hydrocarbon group preferably includes an alkyl group or an alkenyl group.

These pseudoceramides may be used alone or in combination of two or more.

Glycoceramide is a component known as a glycosphingolipid. Glycosphingolipids are ceramides with monosaccharides or oligosaccharides attached. The glycoceramide used in the present invention preferably includes monosaccharide-bound ceramide, more preferably glucosylceramide (glucose-bound ceramide) and galactosylceramide (galactose-bound ceramide), and still more preferably Examples include glucosylceramide.

In addition, glycoceramides include plants (e.g., grains such as rice bran, wheat, corn, and konnyaku; mushrooms such as Tamogitake and Maitake), animals (e.g., mammalian milk, cow brain, etc.), and microorganisms (e.g., Examples include glycoceramides derived from koji molds belonging to the genus Aspergillus, Rhizopus, Monuscus, Penicillium, etc.).

The content of component (C) in the skin cleansing composition of the present invention is not particularly limited, but may be, for example, 0.005 to 0.3% by weight. The lower limit of the above range of component (C) is preferably 0.01% by weight or more from the viewpoint of better obtaining a smooth feeling, a moisturizing feeling and/or a soft feeling. Further, the upper limit of the above range of component (C) is preferably 0.2% by weight or less, more preferably 0.15% by weight or less from the viewpoint of formulation stability.

Furthermore, when the component (C) is a glycoceramide, the lower limit of the above range of the component (C) is more preferably 0.05 weight from the viewpoint of better obtaining a smooth feeling, a moisturizing feeling, and/or a soft feeling. % or more, more preferably 0.08% by weight or more.

In the skin cleansing composition of the present invention, the ratio of component (A) to component (C) is not particularly limited, and is determined by each of the above-mentioned contents, but it can be used to improve moisturizing feeling and/or softness feeling and sliminess suppressing property. From the viewpoint of obtaining better results, the amount of component (C) to 1 part by weight of component (A) is, for example, 0.0005 to 0.1 part by weight, preferably 0.001 to 0.01 part by weight.

(D) Lecithin and/or lysolecithin The skin cleansing composition of the present invention may contain lecithin and/or lysolecithin as component (D). Component (D) can be present together with component (A), component (B), and component (C) for the purpose of improving softness.

In the present invention, as component (D), lecithin may be used from among lecithin and lysolecithin, lysolecithin may be used, or lecithin and lysolecithin may be used in combination.

Lecithin is a mixture of phospholipids such as phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, and phosphatidylinositol, and components such as triglycerides, fatty acids, and carbohydrates from vegetable oils, and is a well-known component in pharmaceuticals, quasi-drugs, and cosmetics. be.

The lecithin used in the present invention may be natural lecithin derived from animals or plants (e.g., soybean lecithin, egg yolk lecithin, etc.), a chemically processed product of natural lecithin, or a purified natural lecithin. It may be a thing. Examples of chemically treated natural lecithin include hydrogenated lecithin obtained by hydrogenation treatment (for example, fully hydrogenated lecithin and partially hydrogenated lecithin), hydroxylated lecithin obtained by hydroxylation treatment, and the like. Examples of purified natural lecithin include lecithin with increased phosphatidylcholine content using a solvent such as acetone.

Examples of the lysolecithin used in the present invention include lyso forms of the above-mentioned lecithin (natural lecithin, chemically treated natural lecithin, purified natural lecithin). Lysolecithin has a structure in which the fatty acid at the 2-position of phosphatidylcholine is removed by hydrolyzing (dissolving) lecithin with an enzyme such as phospholipase A2.

These lecithins and/or lysolecithins may be used alone or in combination of two or more.

The content of component (D) in the skin cleansing composition of the present invention is not particularly limited, but from the viewpoint of obtaining better softness, for example, 0.005 to 3% by weight, preferably 0.01 to 1% by weight. %, more preferably 0.01 to 0.5% by weight.

In the skin cleansing composition of the present invention, the ratio of component (A) to component (D) is not particularly limited, and is determined by each of the above contents, but from the viewpoint of obtaining better moisturizing feeling and/or softer feeling. For example, 0.002 to 0.3 parts by weight, preferably 0.004 to 0.25 parts by weight of component (D) per 1 part by weight of component (A).

Other Components In addition to the above-mentioned components, the skin cleansing composition of the present invention may contain other bases and additives necessary for formulation, etc., to the extent that they do not impair the effects of the present invention. Good too. Such additives are not particularly limited as long as they are pharmaceutically acceptable, but examples include water, lower alcohols having 1 to 5 carbon atoms (ethanol, isopropanol, etc.), and polyhydric alcohols (ethylene glycol, Aqueous bases such as 1,3-butylene glycol (1,3-BG), propylene glycol, isoprene glycol, diethylene glycol, dipropylene glycol, polypropylene glycol, glycerin, etc.); cationic surfactants, anionic surfactants, Surfactants such as amphoteric surfactants (other than components (A) and (D) above); preservatives (methylparaben, propylparaben, benzoic acid, sodium benzoate, sorbic acid, etc.), flavoring agents (citral, etc.); , 1,8-cineole, citronellal, farnesol, etc.), colorants (tar pigments (Brown No. 201, Blue No. 201, Yellow No. 4, Yellow No. 403, etc.), cacao pigments, chlorophyll, aluminum oxide, etc.), thickening agents (carboxyvinyl polymer, hypromellose, polyvinylpyrrolidone, sodium alginate, ethylcellulose, sodium carboxymethylcellulose, xanthan gum, carrageenan, etc.), pH adjusters (phosphoric acid, hydrochloric acid, citric acid, sodium citrate, succinic acid, tartaric acid, sodium hydroxide, potassium hydroxide, triethanolamine, triisopropanolamine, etc.), wetting agents (sodium dl-pyrrolidonecarboxylate solution, D-sorbitol solution, macrogol, etc.), stabilizers (dibutylhydroxytoluene, butylhydroxyanisole, sodium edetate, etc.) , sodium metaphosphate, L-arginine, L-aspartic acid, DL-alanine, glycine, sodium erythorbate, propyl gallate, sodium sulfite, sulfur dioxide, chlorogenic acid, catechin, rosemary extract, etc.), antioxidants, Additives include ultraviolet absorbers, chelating agents, adhesives, buffers, solubilizers, solubilizers, preservatives, and the like. These base materials and additives may be used alone or in combination of two or more. The contents of these base materials and additives can be appropriately set depending on the formulation form and the like.

In addition to the above-mentioned components, the skin cleansing composition of the present invention may contain other pharmacological components as necessary, within a range that does not impair the effects of the present invention. Such pharmacological ingredients include, for example, vitamins (vitamins A, vitamin B1, vitamin B2, vitamin B5, vitamin B6, vitamin B12, vitamin C, vitamin D, vitamin K, niacin). folic acid, biotin, lycopene, etc.), antihistamines (diphenhydramine, diphenhydramine hydrochloride, etc.), local anesthetics (procaine, tetracaine, bupipacaine, mepipacaine, chloroprocaine, proparacaine, meprilcaine or their salts, orthocaine, oxesazein, oxypolyenthoxy) decane, rotoextract, percaminpase, tesitdesitin, etc.), anti-inflammatory agents (indomethacin, felbinac, diclofenac sodium, loxoprofen sodium, etc.), skin protectants (collodion, castor oil, etc.), blood circulation promoting ingredients (nonylic acid vanillylamide, nicotinic acid benzyl ester) , capsaicin, chili pepper extract, etc.), cooling agents (menthol, camphor, borneol, peppermint water, peppermint oil, etc.), mucopolysaccharides (sodium chondroitin sulfate, glucosamine, etc.), and the like. These pharmacological ingredients may be used alone or in combination of two or more. When these pharmacological components are included, the content may be appropriately determined depending on the type of pharmacological component used, the expected effect, and the like.

Form The form of the skin cleansing composition of the present invention is not particularly limited, and may be liquid, cream, gel, etc., but is preferably liquid at room temperature. Furthermore, the skin cleansing composition of the present invention may be in the form of a sheet base material such as cotton or nonwoven fabric impregnated with the liquid skin cleansing composition.

Container The container for storing the skin cleansing composition of the present invention is not particularly limited and may be appropriately selected depending on the form and use, but examples include a spray type container, a pouring or dripping type container (especially a cleaning container). bottles), pump-type containers, tube-type containers, packaging bags, box-shaped containers, etc. In particular, when the skin cleansing composition of the present invention is in liquid form, examples of the container include a spray container, a pouring or dripping container (especially a cleaning bottle), a pump container, and a pump former container. Further, when the skin cleansing composition of the present invention is in the form of a sheet base material impregnated, examples of the container include a packaging bag and a box-shaped container.

In the present invention, among these containers, spray type containers are particularly preferred from the viewpoint of ease of application to the skin and avoidance of physical friction caused by hands or the like during application. Examples of spray containers include pump-type spray containers, which are non-aerosol spray containers, and aerosol spray containers. The diameter of the spray container (inner diameter of the nozzle) is, for example, 0.01 to 3 mmφ, preferably 0.1 to 1 mmφ. When the spray container is a pump-type spray container, the spray amount per push is, for example, 0.05 to 1.2 g, preferably 0.1 to 0.3 g.

Application The skin cleansing composition of the present invention is not particularly limited as long as it is applied to the skin for cleansing. Since the skin cleansing composition of the present invention has excellent smoothness, moisturizing feeling, and plump softness on the skin after washing, it can be used in a more specific manner in which it is applied to the skin and then washed off. Specifically, it is particularly suitable for use as a skin cleansing agent, such as a skin cleansing agent used to remove body fluids such as skin oils and sweat, and dirt, and a cleansing agent used to remove makeup. be.

The skin cleansing composition of the present invention may be diluted with water and lathered before being applied to the skin, or it may be used by being directly applied to the skin without diluting with water or lathering. When used by applying directly to the skin without diluting with water or lathering, the amount used per time depends on the concentration of the surfactant and the degree of dirt, but for example, when used for face washing, 0. .5 to 3 g, preferably 1 to 2 g.

As a specific usage mode, when the skin cleansing composition of the present invention is stored in a pouring or dripping type container (especially a cleaning bottle), a pump type container, a tube type container, etc., the skin cleansing composition of the present invention can be used. You can take it out of the container and apply it to the area to be cleaned by hand. Furthermore, when a sheet base material is impregnated with the skin cleansing composition of the present invention, it can be applied by picking up the sheet base material and applying it to the area to be cleaned.

As a particularly preferred mode of use, the skin cleansing composition contained in a spray type container, pouring or dropping type container (especially a cleaning bottle), preferably a spray type container, can be directly applied to the area to be cleaned without taking it into the hand. can be applied to. In this way, when a skin cleansing composition is applied directly to the area to be cleaned, physical forces such as friction between the skin of the area to be cleaned and the hand and friction between the skin of the area to be cleaned and air bubbles are generated. It becomes possible to clean by simply using the mechanical force of the liquid flow without applying any friction. The skin cleansing composition of the present invention has a formulation that is low irritation and has excellent cleaning power, so by cleaning using the mechanical force of the liquid flow without applying physical friction, The burden on the skin is significantly reduced and an extremely gentle cleaning method becomes possible. The skin cleansing composition of the present invention is particularly suitable for the above-mentioned cleaning method that does not apply physical friction to the skin. This does not exclude methods of use such as scrubbing.

The site to be cleaned with the skin cleansing composition of the present invention is not particularly limited since any body site can be cleaned, and examples thereof include hands, hair, scalp, body, face, and the like. In particular, the skin cleansing composition of the present invention has excellent smoothness, moisturizing feeling, and softness on the skin after washing, and is therefore suitable for use on the face, which is particularly sensitive to these feelings.

After washing, the skin cleansing composition can be rinsed off with water. When rinsing off with water, it can be done in the same way as normal face washing, but from the perspective of reducing the burden on the skin, it is preferable to use the mechanical force of the water stream to avoid friction from your hands.

Manufacturing method The skin cleansing composition of the present invention is prepared by mixing the above-mentioned components (A) to (C), component (D) blended as necessary, and other components blended as necessary. It is manufactured by preparing it into a predetermined form.

EXAMPLES The present invention will be explained in more detail with reference to Examples below, but the present invention is not limited thereto.

Skin cleansing compositions having the compositions shown in Tables 1 and 2 were prepared. Details of each component shown in Tables 1 and 2 are as follows. The prepared skin cleansing composition was subjected to the following evaluation test.

(A) Amino acid surfactant/cocoyl methyl taurine Na (“Diapon K-SF (product name)” manufactured by NOF Corporation)
・Cocamidopropyl betaine (“Softazoline CPB (trade name)” manufactured by Kawaken Fine Chemicals Co., Ltd.)
・Cocoyl glutamic acid TEA (“Amisoft CT-12S (product name)” manufactured by Ajinomoto Co., Inc.)
・Sodium cocoyl methyltaurate (“NIKKOL CMT-30 (product name)” manufactured by Nikko Chemicals Co., Ltd.)
・N-lauroyl-N-methyl-β-alanine sodium (“Softilt AS-L (product name)” manufactured by NOF Corporation)
・Sodium N-lauroyl aspartate (“Aminoformer FLDS-L (product name)” manufactured by Asahi Kasei Fine Chemicals Co., Ltd.)
・Sodium cocoyl methylalanine (“Alanone ACE (product name)” manufactured by Kawaken Fine Chemicals Co., Ltd.)
・Cocamidopropyl betaine (“NIKKOL AM-3130N (product name)” manufactured by Nikko Chemicals)

(a) Other surfactants/sodium lauryl sulfate (“EMAL 0 (product name)” manufactured by Kao Corporation)
・Sodium laurate (“Nonsal LN-1 (product name)” manufactured by NOF Corporation)
・Cocamide DEA (“Amizol CDE-G (product name)” manufactured by Kawaken Fine Chemicals Co., Ltd.)
・Polyoxyethylene lauryl ether sodium acetate (Kao Akipo RLM-100NV (product name) manufactured by Kao Corporation)
・Polyoxyethylene sorbitan monostearate (Rheodor TW-S120V (product name) manufactured by Kao Corporation)
・Glycerin mono 2-ethylhexyl ether solution (SEPPIC “sensiva”
SC 50 JP (product name)”)
・PEG-60 hydrogenated castor oil (polyoxyethylene hydrogenated castor oil; “NIKKOL HCO-60 (product name)” manufactured by Nikko Chemicals Co., Ltd.)
(B) Amphiphilic ester cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol (Neosolue-Aqulio (product name) manufactured by Nippon Fine Chemical Co., Ltd.)
・Bisethoxydiglycol succinate (“Hyakuo Star DCS (product name)” manufactured by Kyoku Alcohol Kogyo Co., Ltd.)
(C) Ceramides/Ceramide 2 (“Ceramide TIC-001 (product name)” manufactured by Takasago International Corporation)
・Glucosylceramide (“Water-soluble Ceramide RC (trade name)” manufactured by Ichimaru Falcos Co., Ltd.) (D) Lecithin and/or lysolecithin ・Lysolecithin (“Lysolecithin Kyowa (trade name)” manufactured by Kyowa Hakko Bio Co., Ltd.)
・Lecithin (“Basis LP-20 (product name)” manufactured by Nisshin Oilio Group Co., Ltd.)

<Smoothness (smoothness) evaluation>
The prepared skin cleansing composition was evaluated by 10 panelists specializing in cosmetic evaluation for smoothness after washing. Specifically, each of the skin cleansing compositions in Table 1 was used in a pump-type spray container ("Z-155-C110 (trade name)" manufactured by Takemoto Yoki Co., Ltd. (spray amount per push is 0.15 g). The skin cleanser compositions in Table 2 were applied by spraying 1.5 g directly onto the face.It was left for about 5 seconds and then washed off with water. 1.5g was applied to the face. It was rubbed for about 5 seconds, and then washed off with water. After washing off, without wiping off the water, the smoothness of the skin was measured using the following index: The evaluation was based on
5 points: Sufficient smoothness (smoothness) 4 points: Smoothness (smoothness) 3 points: Somewhat smoothness (smoothness) 2 points: Not much smoothness (smoothness) 1 point: No smooth feel at all

The scores obtained by the 10 panelists were totaled, and the degree of slimy feeling suppression was evaluated according to the following classification. The results are shown in Tables 1 to 4.
◎: 40 points or more
○: 31 points or more but less than 40 points
△: 22 points or more but less than 33 points
×: Less than 22 points

<Moist feeling (moisturizing feeling) evaluation>
The prepared skin cleansing composition was evaluated by 10 panelists specializing in cosmetic evaluation on the moist feeling (moisturizing feeling) after washing. Specifically, for each skin cleansing composition in Table 1, a pump-type spray container ("Z-155-C110 (trade name)" manufactured by Takemoto Yoki Co., Ltd. (spray amount per push is 0.15 g)) was used. The skin cleanser compositions in Table 2 were applied by spraying 1.5 g directly onto the face.It was left for about 5 seconds and then washed off with water. 1.5g was applied to the face. It was rubbed for about 5 seconds, and then washed off with water. After holding the face with a towel and absorbing the water, the moist feeling (moisturizing feeling) was evaluated using the following index. The score was determined by sensory evaluation based on the following criteria.
5 points: Enough moist feeling (moisturizing feeling) 4 points: Moist feeling (moisturizing feeling) 3 points: Slightly moist feeling (moisturizing feeling) 2 points: Not much moist feeling (moisturizing feeling) 1 point: No moist feeling (moisturizing feeling) at all

The scores obtained by the 10 panelists were totaled, and the degree of moisturizing feeling (moisturizing feeling) was evaluated according to the following classification. The results are shown in Tables 1 to 4.
◎: 40 points or more
○: 28 points or more but less than 40 points
△: 25 points or more but less than 28 points
×: Less than 25 points

<Evaluation of plumpness (softness)>
The prepared skin cleansing composition was evaluated by 10 panelists specializing in cosmetic evaluation for its plumpness (softness) after washing. Specifically, for each skin cleansing composition in Table 1, a pump-type spray container ("Z-155-C110 (trade name)" manufactured by Takemoto Yoki Co., Ltd. (spray amount per push is 0.15 g)) was used. The skin cleanser compositions in Table 2 were applied by spraying 1.5 g directly onto the face.It was left for about 5 seconds and then washed off with water. 1.5g was applied to the face. It was rubbed for about 5 seconds, and then washed off with water. After holding the face with a towel and absorbing the water, the feeling of plumpness (softness) was evaluated using the following index. The score was determined by sensory evaluation based on the following criteria.
5 points: There is a sufficient feeling of plumpness (softness) 4 points: There is a feeling of plumpness (feeling of flexibility) 3 points: There is a slight feeling of plumpness (feeling of flexibility) 2 points: There is not much of a feeling of plumpness (feeling of flexibility) 1 point: No feeling of plumpness (flexibility) at all

The scores obtained by the 10 panelists were totaled, and the degree of slimy feeling suppression was evaluated according to the following classification. The results are shown in Tables 1 to 4.
◎: 40 points or more
○: 34 points or more but less than 40 points
△: 23 points or more but less than 34 points
×: Less than 23 points

As shown in Tables 1 to 4, the skin cleansing compositions (Examples 1 to 17) containing (A) an amino acid surfactant, (B) an amphipathic ester, and (C) ceramides had a The smooth feeling, moisturizing feeling, and soft feeling on the skin were overall excellent. On the other hand, for example, skin cleansing compositions containing component (a) (another surfactant) but not component (A) (Comparative Examples 11 to 20) were inferior in moisturizing feeling and soft feeling. In addition, the skin cleansing compositions (Comparative Examples 1, 2, 5, 6, 9, and 10) that did not contain component (B) were particularly poor in moisturizing feeling. Furthermore, the skin cleansing compositions (Comparative Examples 1 to 8) that did not contain component (C) were particularly poor in smoothness.

Claims (4)

(A) an amino acid surfactant, (B) a dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester, and (C) a ceramide selected from the group consisting of ceramide and glycoceramide; A skin cleansing composition having a content of 0.4% by weight or more. The skin cleansing composition according to claim 1, wherein the dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester is cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol. The skin cleansing composition according to claim 1 or 2, wherein the component (C) is a glycoceramide. The skin cleansing composition according to any one of claims 1 to 3, further comprising (D) lecithin and/or lysolecithin.