Skin cleansing composition

Abstract

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

Description

Technical Field

[0001] The present invention relates to a skin cleansing composition that is comprehensively excellent in smoothness, moisturizing feeling, and softness on washed skin.

Background Art

[0002] As products aimed at cleaning the skin and keeping the skin clean, various skin cleansing compositions such as facial cleansers, body soaps, and shampoos are provided. For skin cleansing compositions, in addition to good foaming properties and detergency, good usability is required.

[0003] One of the aspects of good usability is the smoothness (slipperiness) of the skin, which is a characteristic that gives a good feeling after washing and is particularly emphasized. For example, Patent Document 1 describes that a cleaning composition containing a fatty acid soap, an amphoteric surfactant or an alkanolamide type nonionic surfactant, and an extract of Akebia quinata or Viola arvensis is excellent in the firmness and slipperiness of the skin after washing. Patent Document 2 describes that a solid cleaning composition containing a fatty acid salt, an acyl isethionate, and at least one solid fat selected from waxes, hydrocarbons, and glycerides having a melting point of 30 to 100°C is excellent in slipperiness during rinsing. Patent Document 3 describes that a skin cleansing composition containing an anionic surfactant, an alkyl ether carboxylic acid or its salt, 2-ethylhexyl glyceryl ether, and water is excellent in the slipperiness of the skin after washing.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] Skin cleansing compositions that seek a smooth and slippery feeling on the skin can provide a refreshing rinsing feeling, but the moisturizing and softening feelings on the skin after use are likely to be lost. That is, in conventional skin cleansing compositions, the smooth and slippery feeling on the skin after use cannot coexist with a moist and moisturizing feeling and a plump and soft feeling, and in this regard, they cannot be said to have an excellent overall usability.

[0006] Therefore, an object of the present invention is to provide a skin cleansing composition excellent in overall smoothness, moisturizing feeling, and softness on the rinsed skin.

Means for Solving the Problems

[0007] As a result of intensive studies, the present inventor has found that in a skin cleansing composition, by blending an amphiphilic ester, a cationized hyaluronic acid and / or its salt together with an amino acid surfactant, and further blending ceramides, a smooth and slippery feeling on the rinsed skin can be achieved, and at the same time, a moist and moisturizing feeling and a plump and soft feeling can be well exhibited. The present invention has been completed by further studies based on this finding.

[0008] That is, the present invention provides an invention in the following aspects. Item 1. A skin cleansing composition containing (A) an amino acid surfactant, (B) an amphiphilic ester, and (C) ceramides selected from the group consisting of ceramides, pseudo-ceramides, and glycoceramides. Item 2. The skin cleansing composition according to Item 1, wherein the component (B) is selected from the group consisting of dicarboxylic acid bis(polyoxyalkylene alkyl ether) esters, dicarboxylic acid dialkoxyalkyl esters, and (eicosanedioic acid / tetradecanedioic acid) polyglyceryl-10. Item 3. The skin cleansing composition according to Item 2, wherein the dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester is bisethoxydiglycol cyclohexane-1,4-dicarboxylate. Item 4. The skin cleansing composition according to any one of Claims 1 to 3, wherein the component (C) is glycosphingolipid. Item 5. The skin cleansing composition according to any one of Items 1 to 4, further containing (D) lecithin and / or lysophosphatidylcholine.

Advantages of the Invention

[0009] 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 washed skin.

Modes for Carrying Out the Invention

[0010] The skin cleansing composition of the present invention is characterized by containing (A) an amino acid-based surfactant (hereinafter also referred to as component (A)), (B) an amphiphilic ester (hereinafter also referred to as component (B)), and (C) ceramides selected from the group consisting of ceramides, pseudo-ceramides, and glycosphingolipids (hereinafter also referred to as component (C)). Hereinafter, the skin cleansing composition of the present invention will be described in detail.

[0011] (A) Amino acid-based surfactant The skin cleansing composition of the present invention contains an amino acid-based surfactant as the component (A). By using an amino acid-based surfactant, it is possible to reduce skin irritation while the skin cleansing composition exhibits excellent detergency. Further, by coexisting the component (A) with the components (B) and (C), it is possible to favorably obtain a moisturizing feeling and / or a soft feeling on the washed skin.

[0012] As amino acid-based surfactants, from the viewpoint of preferably obtaining detergency, reduced skin irritation, moisturizing feeling and / or soft feeling, amino acid-based anionic surfactants and amino acid-based amphoteric surfactants can be mentioned. As the amino acid-based surfactant, either one of the amino acid-based anionic surfactant and the amino acid-based amphoteric surfactant may be used, or both may be used in combination. Among these amino acid surfactants, from the viewpoint of more preferably obtaining a smooth feeling and a moisturizing feeling, amino acid-based anionic surfactants can be mentioned, and from the viewpoint of preferably obtaining a soft feeling, amino acid-based amphoteric surfactants are preferably used.

[0013] 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.

[0014] Examples of the carboxylic acid type amino acid-based anionic surfactant include N-acyl amino acids having a saturated or unsaturated N-acyl group with 8 to 24 carbon atoms such as an octanoyl group, a decanoyl group, a lauroyl group, a myristoyl group, a palmitoyl group, and a cocooyl group. Examples of the N-acyl amino acid in the carboxylic acid type amino acid-based anionic surfactant include N-acyl sarcosine, N-acyl aspartic acid, N-acyl glutamic acid, N-acyl-N-methyl-β-alanine, and the like. More specific examples of the carboxylic acid type amino acid-based anionic surfactant include N-lauroyl sarcosine, cocooyl sarcosine, N-lauroyl aspartic acid, cocooyl aspartic acid, N-lauroyl glutamic acid, cocooyl glutamic acid, N-lauroyl-N-methyl-β-alanine, cocooyl methyl alanine, and the like.

[0015] Examples of sulfonic acid type amino acid anionic surfactants include N-acyl-N-methyltaurine having a saturated or unsaturated N-acyl group with 8 to 24 carbon atoms such as octanoyl group, decanoyl group, lauroyl group, myristoyl group, palmitoyl group, and cocoil group. More specific examples of sulfonic acid type amino acid anionic surfactants include N-myristoyl-N-methyltaurine, N-lauroyl-N-methyltaurine, and cocoil methyl taurine.

[0016] These amino acid anionic surfactants may be in the form of salts, for example, alkali metal salts such as sodium salts and potassium salts; triethanolamine (TEA) salts; and ammonium salts.

[0017] Among these amino acid anionic surfactants, from the viewpoint of preferably obtaining detergency, reduced skin irritation, moisturizing feeling and / or soft feeling, preferably N-lauroyl aspartic acid, cocoil glutamic acid, N-lauroyl-N-methyl-β-alanine, cocoil methyl alanine, and cocoil methyl taurine can be mentioned. More preferably, sodium N-lauroyl aspartate, triethanolamine cocoil glutamate, sodium N-lauroyl-N-methyl-β-alanine, sodium cocoil methyl alanine, and sodium cocoil methyl taurine can be mentioned. From the viewpoint of more preferably obtaining detergency, more preferably, sodium N-lauroyl aspartate, triethanolamine cocoil glutamate, sodium N-lauroyl-N-methyl-β-alanine, and sodium cocoil methyl alanine can be mentioned. From the viewpoint of more preferably obtaining a moisturizing feeling, more preferably sodium N-lauroyl aspartate can be mentioned.

[0018] As the amino acid anionic surfactant, one kind may be used alone or two or more kinds may be used in combination from among the above-mentioned carboxylic acid type amino acid anionic surfactants and sulfonic acid type amino acid anionic surfactants.

[0019] These amino acid-based anionic surfactants may be used alone or in combination of two or more thereof.

[0020] Examples of the amino acid-based amphoteric surfactants used in the present invention include amide betaine-type amphoteric surfactants and alkyl betaine-type amphoteric surfactants. As the amino acid-based amphoteric surfactant, from the viewpoint of more preferably obtaining detergency, reduction of skin irritation, moisturizing feeling and / or soft feeling, preferably an amide betaine-type amphoteric surfactant can be mentioned.

[0021] The amide betaine-type amphoteric surfactant has the general formula R 1 CO-NH-(CH 2 ) n -N + (CH 3 ) 2 CH 2 CO 2 - (In the formula, the R 1 CO-group represents 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, a cocoil group, etc., and n represents an integer of 2 to 8.) It is a compound represented by, and from the viewpoint of preferably obtaining detergency, reduction of skin irritation, moisturizing feeling and / or soft feeling, preferably, cocamidopropyl betaine, lauric acid amide propyl betaine, etc. can be mentioned, and more preferably, cocamidopropyl betaine can be mentioned.

[0022] The alkyl betaine-type amphoteric surfactant has the general formula R 2 -N + (CH 3 ) 2 CH 2 CO 2 - (In the formula , the R 2 group is an octyl group, a decyl group, a lauryl group, a myristyl group, a palmityl group, coconut oil It represents a saturated or unsaturated alkyl group having 8 to 24 carbon atoms such as a fatty acid alkyl group. ) is a compound represented by, and from the viewpoint of preferably obtaining detergency, reduction of skin irritation, moisturizing feeling and / or soft feeling, preferably, lauryldimethylbetaine, tetradecyldimethylaminoacetate betaine and the like can be mentioned.

[0023] These amino acid-based amphoteric surfactants may be used alone or in combination of two or more.

[0024] In addition, as described later, in the skin cleansing composition of the present invention, a surfactant other than the component (A) may be contained, but when the component (D) is blended, from the viewpoint of obtaining further improved flexibility, it is preferable not to contain a surfactant other than the component (A).

[0025] The content of the component (A) in the skin cleansing composition of the present invention is not particularly limited and may be appropriately determined according to the detergency to be imparted and the like. For example, 0.025 to 20% by weight, preferably 0.025 to 12% by weight can be mentioned. Further, in the skin cleansing composition of the present invention, since the component (A) coexists with the component (B) described later, the detergency can be effectively exhibited even if the content of the component (A) is small. From such a viewpoint, in order to further reduce skin irritation, the upper limit of the content of the component (A) in the above range is, for example, 10% by weight or less, preferably 6% by weight or less, more preferably 2% by weight or less. Further, from the viewpoint of obtaining more excellent detergency, the lower limit of the above content range of the component (A) is preferably 0.05% by weight or more, more preferably 0.1% by weight or more, still more preferably 0.5% by weight or more, even more preferably 1% by weight or more, particularly preferably 1.5% by weight or more. In addition, as described later, in the skin cleansing composition of the present invention, a surfactant other than the component (A) may be contained, but when a surfactant other than the component (A) is contained, it is preferable to adjust so that the total content of the component (A) and the surfactant other than the component (A) is within the above range.

[0026] (B) Amphiphilic ester The skin cleansing composition of the present invention contains an amphiphilic ester as component (B). By coexisting component (B) with component (A) and component (C), a good moisturizing feeling and soft feeling can be obtained on the rinsed skin.

[0027] Further, although component (B) does not show a cleansing action alone, the detergency of the skin cleansing composition can be improved by coexisting it with component (A).

[0028] In the present invention, the amphiphilic ester is dissolved in ion-exchanged water adjusted to a conductivity of 70 to 110 μs / m at room temperature in an amount of 2% by mass or more, and is also dissolved in isotridecyl isononanoate (manufactured by Nisshin Oillio Group, Ltd., Saracos 913), which is an oil agent, in an amount of 10% by mass or more at room temperature (25°C). Ester-based surfactants are excluded.

[0029] The amphiphilic ester is not particularly limited, but from the viewpoint of obtaining better moisturizing feeling and detergency, it is preferably selected from the group consisting of dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester, dicarboxylic acid dialkoxyalkyl ester, and (eicosanedioic acid / tetradecanedioic acid) polyglyceryl-10. As the amphiphilic ester, any one of dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester, dicarboxylic acid dialkoxyalkyl ester, and (eicosanedioic acid / tetradecanedioic acid) polyglyceryl-10 may be used alone, or two or more thereof may be used in combination. Among these amphiphilic esters, dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester is more preferable from the viewpoint of obtaining better moisturizing feeling and detergency.

[0030] The dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester used in the present invention is a diester compound of a dicarboxylic acid and a polyoxyalkylene alkyl ether. Specific examples of the dicarboxylic acid constituting the dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester include, for example, oxalic acid, malonic acid, succinic acid, tartaric acid, malic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, aspartic acid, glutamic acid, acetonedicarboxylic acid, phthalic acid, cyclohexane-1,4-dicarboxylic acid, and the like. Further, examples of the polyoxyalkylene alkyl ether constituting the diester compound include, for example, polyoxyethylene monoalkyl ether, and more specifically, for example, diethylene glycol monoethyl ether, triethylene glycol monoethyl ether, and the like.

[0031] Among these dicarboxylic acid bis(polyoxyalkylene alkyl ether) esters, from the viewpoint of obtaining better moisturizing feeling and detergency, preferably, a diester compound of cyclohexane-1,4-dicarboxylic acid and diethylene glycol monoethyl ether, specifically, the INCI name (International Cosmetic Ingredient Dictionary and Handbook, 13th Edition, Volume 1, CTFA, 2010, p. 331): BIS-ETHOXYDIGLYCOL CYCLOHEX ANE 1,4-DICARBOXYLATE, a compound called cyclohexane-1,4- dicarboxylic acid bisethoxydiglycol, and a diester compound of succinic acid and diethylene glycol monoethyl ether, specifically, the INCI name (International Cosmetic Ingredient Dictionary and Handbook, 13th Edition, Volume 1, CTFA, 2010, p. 331-33 2): BIS-ETHOXYDIGLYCOL SUCCINATE, co Examples of the compound include bis(ethoxydiglycol) succinate.

[0032] In the present invention, specific examples of the bis(ethoxydiglycol) cyclohexane-1,4-dicarboxylate include, for example, "Neosolue-Aqulio (trade name)" manufactured by Nippon Fine Chemical Co., Ltd. Specific examples of the bis(ethoxydiglycol) succinate include, for example, "Hi-Aquoster DCS (trade name)" manufactured by Kao Alcohol Industry Co., Ltd.

[0033] These dicarboxylic acid bis(polyoxyalkylene alkyl ethers) esters may be used alone or in combination of two or more.

[0034] The dicarboxylic acid dialkoxyalkyl ester used in the present invention is a diester compound of a dicarboxylic acid and an alkoxy alcohol. Specific examples of the dicarboxylic acid constituting the diester compound of the dicarboxylic acid dialkoxyalkyl include, for example, oxalic acid, malonic acid, succinic acid, tartaric acid, malic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, aspartic acid, glutamic acid, acetonedicarboxylic acid, phthalic acid, cyclohexane-1,4-dicarboxylic acid, and the like. Specific examples of the alkoxy alcohol constituting the diester compound include, for example, 2-methoxyethanol, 2-ethoxyethanol, and the like.

[0035] Among these dicarboxylic acid dialkoxyalkyl esters, from the viewpoint of more favorably obtaining reduced skin irritation and detergency, preferably, a diester compound of succinic acid and 2-ethoxyethanol, specifically, diethoxyethyl succinate, is mentioned.

[0036] These dicarboxylic acid dialkoxyalkyl esters may be used alone or in combination of two or more.

[0037] The (eicosanedioic acid / tetradecanedioic acid) polyglyceryl-10 used in the present invention is not particularly limited, and examples thereof include "Neosolue-Aqua (trade name)", "Neosolue-AquaS (trade name)" manufactured by Nippon Fine Chemical Co., Ltd.

[0038] The content of component (B) in the skin cleansing composition of the present invention is not particularly limited, and examples thereof include 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 better smoothness, the content of component (B) is more preferably 0.5% by weight or more. The upper limit of the content of component (B) in the above range is not particularly limited, but from the viewpoint of the stability of the skin cleansing composition, etc., for example, it is 5% by weight or less, preferably 3% by weight or less, more preferably 2% by weight or less, and still more preferably 1% by weight or less.

[0039] 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 the respective contents described above. From the viewpoint of obtaining better moisturizing feeling and detergency, for example, component (B) 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, still more preferably 0.03 to 1 part by weight, and particularly preferably 0.03 to 0.5 part by weight with respect to 1 part by weight of component (A).

[0040] (C) Ceramides The skin cleansing composition of the present invention contains ceramides as component (C). By combining component (C) with components (A) and (B), the smoothness, moisturizing feeling, and softness can be comprehensively improved.

[0041] Ceramides refer to ceramide, pseudo-ceramide, and / or glycoceramide. In the present invention, as component (C), any one of ceramide, pseudo-ceramide, and glycoceramide may be used, or a combination of a plurality of types may be used.

[0042] Ceramide is a type of sphingolipid and is a well-known component as a general term for a group of compounds in which a long-chain fatty acid is amide-bonded to the amino group of sphingosine. Ceramide is classified into ceramide 1, ceramide 2, ceramide 3, ceramide 4, ceramide 5, ceramide 6I, ceramide 6II, ceramide 7, ceramide 8, ceramide 9, ceramide 10, etc. depending on the structure of sphingosine (such as the structure of the N-acyl group) and the structure of the long-chain fatty acid. These ceramides may be used alone or in combination of two or more. Among these ceramides, preferably ceramide 1, ceramide 2, and ceramide 3 can be mentioned.

[0043] The origin of the ceramide used in the present invention is not particularly limited and may be appropriately set according to the type of ceramide, etc. For example, it may be any of those extracted from animals and plants, those obtained by microbial fermentation, those chemically synthesized, etc.

[0044] Pseudo-ceramide is a ceramide analog having a structure and properties similar to those of ceramide. Specifically, examples include compounds selected from the compounds represented by the following general formula (I) and the compounds represented by general formula (II).

[0045]

Chemical formula

[0046] 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 represents an integer of 2 to 6. As the hydrocarbon group, preferably an alkyl group or an alkenyl group can be mentioned. Specific examples of the pseudo-ceramide represented by formula (I) include N-(hexadecyloxyhydroxypropyl)-N-hydroxyethylhexadecanamide.

[0047]

Chemical formula

[0048] In formula (II), R 21 and R 22 each independently represent a C1-C40 hydrocarbon group which may be hydroxylated, R 23 represents a C1-C6 alkylene group or a single bond, and R 24 represents a hydrogen atom, a C1-C12 alkoxy group or a 2,3-dihydroxypropyloxy group. However, when R 23 is a single bond, R 24 is a hydrogen atom. Preferred hydrocarbon groups include alkyl groups and alkenyl groups.

[0049] These pseudo-ceramides may be used alone or in combination of two or more.

[0050] Glycosphingolipids are known components as sphingoglycolipids. Sphingoglycolipids are ceramides to which a monosaccharide or oligosaccharide is attached. Preferred glycosphingolipids used in the present invention include ceramides to which a monosaccharide is attached, more preferably glucosylceramide (ceramide to which glucose is attached) and galactosylceramide (ceramide to which galactose is attached), and even more preferably glucosylceramide.

[0051] Examples of glycosphingolipids also include those derived from plants (e.g., cereals such as rice bran, wheat, corn, konjac; mushrooms such as shiitake, maitake), animals (e.g., milk of mammals, bovine brain), and microorganisms (e.g., koji molds belonging to the genus Aspergillus, Rhizopus, Monascus, Penicillium).

[0052] The content of component (C) in the skin cleansing composition of the present invention is not particularly limited, and for example, 0.005 to 0.3% by weight can be mentioned. From the viewpoint of obtaining a better smoothness, moisturizing feeling and / or softness, the lower limit of the above range of component (C) is preferably 0.01% by weight or more. Further, from the viewpoint of formulation stability, 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.

[0053] Furthermore, when component (C) is ceramide, from the viewpoint of obtaining a better smoothness, moisturizing feeling and / or softness, the lower limit of the above range of component (C) is more preferably 0.05% by weight or more, still more preferably 0.08% by weight or more.

[0054] 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 the respective contents described above. From the viewpoint of obtaining a better moisturizing feeling and / or softness and suppressing stickiness, for example, the amount of component (C) is 0.0005 to 0.1 part by weight, preferably 0.001 to 0.01 part by weight with respect to 1 part by weight of component (A).

[0055] (D) Lecithin and / or lysophosphatidylcholine The skin cleansing composition of the present invention may contain lecithin and / or lysophosphatidylcholine as component (D). Component (D) can coexist with components (A), (B) and (C) for the purpose of improving softness.

[0056] In the present invention, as component (D), lecithin, lysophosphatidylcholine or a combination of lecithin and lysophosphatidylcholine may be used.

[0057] Lecithin is a mixture of phospholipids such as phosphatidylcholine, phosphatidylethanolamine, phosphatidylserine, phosphatidylinositol and components such as triglyceride, fatty acid, carbohydrate from vegetable oil, and is a component known in pharmaceuticals, quasi-drugs and cosmetics.

[0058] As the lecithin used in the present invention, it may be a natural lecithin derived from animals or plants (for example, soybean lecithin, egg yolk lecithin, etc.) itself, a chemical treatment product of natural lecithin, or a purified product of natural lecithin. Examples of the chemical treatment product of 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 the purified product of natural lecithin include lecithin with an increased phosphatidylcholine content using a solvent such as acetone.

[0059] As the lysophosphatidylcholine used in the present invention, lysates of the above-mentioned lecithin (natural lecithin, chemical treatment product of natural lecithin, purified product of natural lecithin) can be mentioned. Lysophosphatidylcholine has a structure in which the fatty acid at the 2-position of phosphatidylcholine is removed by hydrolysis (dissolution) of lecithin with an enzyme such as phospholipase A2.

[0060] These lecithin and / or lysophosphatidylcholine may be used alone or in combination of two or more.

[0061] The content of the component (D) in the skin cleansing composition of the present invention is not particularly limited, but from the viewpoint of obtaining a better soft feeling, for example, 0.005 to 3% by weight, preferably 0.01 to 1% by weight, more preferably 0.01 to 0.5% by weight can be mentioned.

[0062] In the skin cleansing composition of the present invention, the ratio of the component (A) to the component (D) is not particularly limited and is determined by the respective contents described above. From the viewpoint of obtaining a better moisturizing feeling and / or soft feeling, for example, the component (D) is 0.002 to 0.3 parts by weight, preferably 0.004 to 0.25 parts by weight with respect to 1 part by weight of the component (A).

[0063] Other components In addition to the above components, the skin cleansing composition of the present invention may contain other bases and additives required for formulation and the like, as long as the effects of the present invention are not impaired. Such additives are not particularly limited as long as they are pharmaceutically acceptable. For example, water, lower alcohols having 1 to 5 carbon atoms (ethanol, isopropanol, etc.), and polyhydric alcohols (ethylene glycol, 1,3-butylene glycol (1,3-BG), propylene glycol, isoprene glycol, diethylene glycol, dipropylene glycol, polypropylene glycol, glycerin, etc.) and other aqueous bases; surfactants such as cationic surfactants, anionic surfactants, and amphoteric surfactants (other than the above components (A) and (D)); preservatives (methyl paraben, propyl paraben, benzoic acid, sodium benzoate, sorbic acid, etc.), fragrances (citral, 1,8-cineole, citronellal, farnesol, etc.), colorants (tar dyes (Brown No. 201, Blue No. 201, Yellow No. 4, Yellow No. 403, etc.), cocoa pigments, chlorophyll, aluminum oxide, etc.), thickeners (carboxyvinyl polymer, hypromellose, polyvinyl pyrrolidone, sodium alginate, ethyl cellulose, sodium carboxymethyl cellulose, 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, 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, ultraviolet absorbers, chelating agents, adhesives, buffers, solubilizing aids, solubilizers, preservatives, and other additives. 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 according to the dosage form and the like.

[0064] In addition to the above components, the skin cleansing composition of the present invention may contain other pharmacological components as needed, as long as the effects of the present invention are not impaired. Examples of such pharmacological components include vitamins (vitamin A, vitamin B1, vitamin B2, vitamin B5, vitamin B6, vitamin B12, vitamin C, vitamin D, vitamin K, niacins, folic acid, biotin, lycopene, etc.), antihistamines (diphenhydramine, diphenhydramine hydrochloride, etc.), local anesthetics (procaine, tetracaine, bupivacaine, mepivacaine, chloroprocaine, propoxycaine, meprilcaine or salts thereof, orthocaine, oxysezone, oxypolyethylenedecane, rooibos extract, percamide peroxide, tesitin desitin, etc.), anti-inflammatory agents (indomethacin, felbinac, diclofenac sodium, loxoprofen sodium, etc.), skin protectants (collodion, castor oil, etc.), blood circulation promoting components (nonyl vanillylamide, benzyl nicotinate, capsaicin, pepper extract, etc.), cooling agents (menthol, camphor, borneol, peppermint water, peppermint oil, etc.), mucopolysaccharides (sodium chondroitin sulfate, glucosamine, etc.), and the like. These pharmacological components may be used alone or in combination of two or more. When these pharmacological components are contained, the content may be appropriately set according to the type of pharmacological component used, the expected effect, and the like.

[0065] Form The form of the skin cleansing composition of the present invention is not particularly limited, and examples include liquid, cream, gel, etc., but preferably liquid at normal temperature. Further, the skin cleansing composition of the present invention may be in a form in which a liquid skin cleansing composition is impregnated into a sheet substrate such as cotton or non-woven fabric.

[0066] Container The container for storing the skin cleanser composition of the present invention is not particularly limited and may be appropriately selected depending on the form, use, etc., and examples thereof include a spray type container, a pour-down or drop-down type container (particularly a cleaning bottle), a pump type container, a tube type container, a packaging bag, a box-shaped container, etc. In particular, when the skin cleanser composition of the present invention is in a liquid form, examples of the container include a spray type container, a pour-down or drop-down type container (particularly a cleaning bottle), a pump type container, and a pump former container. In addition, when the skin cleanser composition of the present invention is in a form impregnated into a sheet substrate, examples of the container include a packaging bag and a box-shaped container.

[0067] In the present invention, among these containers, spray containers are particularly preferred from the viewpoints of ease of application to the skin and avoidance of physical friction caused by hands during application. Examples of spray containers include pump spray containers, which are non-aerosol spray containers, and aerosol spray containers. The aperture (inner diameter of the nozzle) of the spray container is, for example, 0.01 to 3 mmφ, preferably 0.1 to 1 mmφ. When the spray container is a pump spray container, the amount sprayed per push is, for example, 0.05 to 1.2 g, preferably 0.1 to 0.3 g.

[0068] Use 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 is excellent in smooth and smooth feeling, moisturizing feeling, and plump and soft feeling on the skin after washing, it is suitable for use in a form of application in which it is applied to the skin and then washed off, more specifically, as a skin cleansing agent used to remove oils and fats, body fluids such as sweat, dirt, etc. from the skin, and a cleansing agent used to remove makeup, and particularly preferably as the above-mentioned skin cleansing agent.

[0069] The skin cleansing composition of the present invention may be diluted with water and lathered before application to the skin, or may be applied directly to the skin without diluting with water or lathering. When the skin cleansing composition is applied directly to the skin without diluting with water or lathering, the amount of use per application varies depending on the concentration of the surfactant and the degree of dirt, but for example, when used for face washing, it is 0.5 to 3 g, preferably 1 to 2 g.

[0070] As a specific mode of use, when the skin cleanser composition of the present invention is contained in a pour-out or drop-type container (particularly a cleaning bottle), a pump-type container, a tube-type container, etc., the skin cleanser composition can be taken from the container once and applied to the area to be cleaned by hand. When the skin cleanser composition of the present invention is impregnated into a sheet substrate, the skin cleanser composition can be applied by taking the sheet substrate in the hand and applying it to the area to be cleaned.

[0071] As a particularly preferred mode of use, the skin cleanser composition contained in a spray container, pour-on or drop-on container (particularly a cleaning bottle), preferably a spray container, can be applied directly to the area to be cleaned without taking it in the hands. When the skin cleanser composition is applied directly to the area to be cleaned, cleaning is possible only by using the mechanical force of the liquid flow without applying any physical friction such as friction between the skin of the area to be cleaned and the hands, or between the skin of the area to be cleaned and air bubbles. Since the skin cleanser composition of the present invention is formulated to be low-irritating and has excellent cleaning power, cleaning using the mechanical force of the liquid flow without applying physical friction in this way significantly reduces the burden on the skin during cleaning, making it possible to perform a very gentle cleaning method. Note that the skin cleanser composition of the present invention is particularly suitable for a cleaning method that does not apply physical friction to the skin as described above, but does not exclude a method of use in which the skin cleanser composition is applied to the area to be cleaned and then scrubbed with hands or the like.

[0072] As the site to be cleaned by the skin cleansing composition of the present invention, since it is possible to clean any body part, it is not particularly limited, and examples thereof include hands, hair, scalp, body, face, and the like. In particular, since the skin cleansing composition of the present invention is excellent in smoothness, moisturizing feeling, and softness on the washed skin, it is suitable for use on the face where these feelings of use are particularly easy to feel.

[0073] After washing, the skin cleansing composition can be rinsed with water. When rinsing with water, it may be carried out in the same manner as ordinary face washing, but from the viewpoint of reducing the burden on the skin, it is preferable to rinse using the mechanical force of the water flow so as not to apply friction by hand.

[0074] Manufacturing method The skin cleansing composition of the present invention is produced by mixing the above-described components (A) to (C), the component (D) optionally blended, and other components optionally blended, and preparing them into a predetermined form.

Examples

[0075] The present invention will be described more specifically with reference to the following examples, but the present invention is not limited thereto.

[0076] Skin cleansing compositions having the compositions shown in Tables 1 to 2 were prepared. The details of each component shown in Tables 1 to 2 are as follows. The prepared skin cleansing compositions were subjected to the following evaluation tests.

[0077] (A) Amino acid-based surfactant · Sodium cocoyl methyl taurine (manufactured by NOF Corporation, "Daiapon K-SF (trade name)") · Cocamidopropyl betaine (manufactured by Kawaken Fine Chemicals Co., Ltd., "Softazoline CPB (trade name)") · TEA cocoyl glutamate (manufactured by Ajinomoto Co., Inc., "Amisoft CT-12S (trade name)") · Sodium cocoyl methyl taurine (manufactured by Nikko Chemicals Co., Ltd., "NIKKOL CMT-30 (trade name)") · Sodium N-lauroyl-N-methyl-β-alanine (Softilt AS-L (trade name) manufactured by NOF Corporation) · Sodium N-lauroyl aspartate (Aminoformer FLDS-L (trade name) manufactured by Asahi Kasei Fine Chemicals Corporation) · Sodium cocoyl methyl alaninate (Alanone ACE (trade name) manufactured by Kawaaken Fine Chemicals Co., Ltd.) · Cocamidopropyl betaine (NIKKOL AM-3130N (trade name) manufactured by Nikko Chemicals Co., Ltd.) (a) Other surfactants · Sodium lauryl sulfate (Emal 0 (trade name) manufactured by Kao Corporation) · Sodium laurate (Non-Sarl LN-1 (trade name) manufactured by NOF Corporation) · Cocamide DEA (Amisol CDE-G (trade name) manufactured by Kawaaken Fine Chemicals Co., Ltd.) · Sodium polyoxyethylene lauryl ether acetate (KAO-Akippo RLM-100NV (trade name)) · Polyoxyethylene sorbitan monostearate (Leodol TW-S120V (trade name) manufactured by Kao Corporation) · Glycerin mono-2-ethylhexyl ether solution (sensiva SC 50 JP (trade name) manufactured by SEPPIC) · PEG-60 hydrogenated castor oil (Polyoxyethylene hydrogenated castor oil; NIKKOL HCO-60 (trade name) manufactured by Nikko Chemicals Co., Ltd.) (B) Amphiphilic esters · Bis(ethoxydiglycol) cyclohexane-1,4-dicarboxylate (Neosolue-Aqulio (trade name) manufactured by Nippon Fine Chemical Co., Ltd.) · Bis(ethoxydiglycol) succinate (Hi-Aquoster DCS (trade name) manufactured by Kao Alcohol Industries Co., Ltd.) (C) Ceramides · Ceramide 2 (Ceramide TIC-001 (trade name) manufactured by Takasago Perfumery Co., Ltd.) · Glucosylceramide ("Water-soluble Ceramide RC" (trade name) manufactured by Ichimaru Pharcos Co., Ltd.) (D) Lecithin and / or Lysophosphatidylcholine · Lysophosphatidylcholine ("Lysophosphatidylcholine Kyowa" (trade name) manufactured by Kyowa Hakko Bio Co., Ltd.) · Lecithin ("Basis LP-20" (trade name) manufactured by Nisshin Oillio Group, Ltd.)

[0078] <Evaluation of smoothness> Regarding the prepared skin cleansing agent compositions, 10 professional cosmetic evaluation panelists evaluated the smoothness at the time of rinsing. Specifically, for each skin cleansing agent composition in Table 1, it was contained in a pump spray container ("Z-155-C110" (trade name) manufactured by Takemoto Container Co., Ltd. (the injection amount per push is 0.15 g)), and 1.5 g was directly sprayed onto the face for application. After leaving it for about 5 seconds, it was then rinsed off with water. Also, for each skin cleansing agent composition in Table 2, it was contained in a pump foamer container, and 1.5 g was applied to the face. After scrubbing for about 5 seconds, it was then rinsed off with water. After rinsing, without wiping off the water, the smoothness of the skin was evaluated based on the following criteria. 5 points: Sufficient smoothness 4 points: There is smoothness 3 points: Slightly smooth 2 points: Little smoothness 1 point: No smoothness at all

[0079] The total scores obtained by the 10 panelists were summed up, and the degree of smoothness 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 and less than 40 points △: 22 points or more and less than 33 points ×: Less than 22 points

[0080] <Evaluation of moistness> Regarding the prepared skin cleansing agent compositions, 10 professional cosmetic evaluation panelists evaluated the moist feeling (moisturizing feeling) after rinsing. Specifically, for each skin cleansing agent composition in Table 1, it was contained in a pump spray container ("Z-155-C110 (trade name)" manufactured by Takemoto Container Co., Ltd., injection volume per push is 0.15 g), and 1.5 g was directly sprayed onto the face for application. It was left for about 5 seconds and then washed off with water. Also, for each skin cleansing agent composition in Table 2, it was contained in a pump foamer container, and 1.5 g was applied to the face. Scrubbing was performed for about 5 seconds and then it was washed off with water. After blotting the face with a towel to absorb the water, the moist feeling (moisturizing feeling) was scored by sensory evaluation based on the following criteria. 5 points: There is sufficient moist feeling (moisturizing feeling). 4 points: There is a moist feeling (moisturizing feeling). 3 points: There is a somewhat moist feeling (moisturizing feeling). 2 points: There is not much moist feeling (moisturizing feeling). 1 point: There is no moist feeling (moisturizing feeling) at all.

[0081] The total scores obtained by the 10 panelists were summed up, and the degree of the moist 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 and less than 40 points △: 25 points or more and less than 28 points ×: Less than 25 points

[0082] <Evaluation of plump feeling (soft feeling)> Regarding the prepared skin cleansing agent compositions, 10 professional cosmetic evaluation panelists evaluated the plumpness (softness) at the end of washing. Specifically, for each skin cleansing agent composition in Table 1, it was contained in a pump spray container ("Z-155-C110 (trade name)" manufactured by Takemoto Container Co., Ltd., with an injection amount of 0.15 g per push), and 1.5 g was applied by directly spraying it onto the face. After leaving it for about 5 seconds, it was then rinsed off with water. Also, for each skin cleansing agent composition in Table 2, it was contained in a pump foamer container, and 1.5 g was applied to the face. Scrubbing was performed for about 5 seconds, and then it was rinsed off with water. After blotting the face with a towel to absorb the water, the plumpness (softness) was scored by conducting a sensory evaluation based on the following criteria. 5 points: Sufficient plumpness (softness) 4 points: There is plumpness (softness) 3 points: Slightly plump (soft) 2 points: Little plumpness (softness) 1 point: No plumpness (softness) at all

[0083] The total scores obtained by the 10 panelists were summed up, and the degree of stickiness suppression was evaluated according to the following classification. The results are shown in Tables 1 - 4. ◎: 40 points or more ○: 34 points or more and less than 40 points △: 23 points or more and less than 34 points ×: Less than 23 points

[0084]

Table 1

[0085]

Table 2

[0086] As shown in Tables 1 to 4, the skin cleansing compositions (Examples 1 to 17) containing (A) an amino acid surfactant, (B) an amphiphilic ester, and (C) ceramides were excellent in terms of the overall smoothness, moisturizing effect, and softness on the rinsed skin. On the other hand, for example, the skin cleansing compositions (Comparative Examples 11 to 20) containing component (a) (other surfactant) but not containing component (A) were inferior in terms of moisturizing effect and softness. Also, the skin cleansing compositions not containing component (B) (Comparative Examples 1, 2, 5, 6, 9, 10) were particularly inferior in terms of moisturizing effect. Furthermore, the skin cleansing compositions not containing component (C) (Comparative Examples 1 to 8) were particularly inferior in terms of smoothness.

Claims

1. A skin cleansing composition containing (A) an amino acid-based surfactant, (B) a dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester, and (C) glycosphingolipid, wherein the content of the component (B) is 0.4% by weight or more.

2. The skin cleansing composition according to Claim 1, wherein the dicarboxylic acid bis(polyoxyalkylene alkyl ether) ester is cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol.

3. The skin cleansing composition according to Claim 1 or 2, wherein the content of the component (A) is 0.025 to 20% by weight.

4. The skin cleansing composition according to any one of Claims 1 to 3, further containing (D) lecithin and / or lysophosphatidylcholine.

5. The skin cleansing composition according to any one of Claims 1 to 4, wherein 0.01 to 100 parts by weight of the component (B) is contained per 1 part by weight of the component (A).

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