Cleansing cosmetic

Abstract

To provide a cleansing cosmetic having low irritation, which is usable for sensitive skin.SOLUTION: The present invention relates to a cleansing cosmetic that includes (A) at least one component selected from surfactin and salts thereof: 0.3 mass% to 3 mass%, and (B) a surfactant other than component (A) and an anionic surfactant: 1 mass% to 6 mass% (wherein contents of components (A) to (B) are values based on a total mass of the cleansing cosmetic), the cleansing cosmetic being an O / D-type emulsion composition.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a cleansing cosmetic. [Background technology]

[0002] Cleansing cosmetics (hereinafter also referred to as "cleansing cosmetics") are widely known for removing makeup cosmetics (hereinafter also referred to as "makeup"). Among them, cleansing cosmetics containing a large amount of oil have become widespread in order to improve compatibility with makeup.

[0003] As an example of a cleansing cosmetic containing a large amount of oil, Patent Document 1 discloses a cleansing cosmetic that is a transparent oil-based thickened gel composition containing about 60% oil. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-176211 Summary of the Invention [Problem to be solved by the invention]

[0005] On the other hand, the irritation that can occur when a large amount of surfactants necessary for emulsification in cleansing cosmetics is used remains an issue that has yet to be resolved.

[0006] Therefore, an object of the present invention is to provide a low-irritation cleansing cosmetic that can be used on sensitive skin. [Means for solving the problem]

[0007] The present inventors have investigated various means for solving the above-mentioned problems, and as a result have found that in a cleansing cosmetic comprising (A) at least one component selected from surfactin and salts thereof, and (B) a surfactant other than component (A) and an anionic surfactant, by setting the amount of each component within a specific range, it is possible to produce a cleansing cosmetic that is a hypoallergenic O / D type emulsion composition that can also be used on sensitive skin, and have completed the present invention.

[0008] That is, the gist of the present invention is as follows. (1) (A) at least one component selected from surfactin and salts thereof: 0.3% by mass to 3% by mass, and (B) Surfactants other than component (A) and anionic surfactants: 1% by mass to 6% by mass (Here, the contents of components (A) and (B) are values ​​relative to the total mass of the cleansing cosmetic.) Including, It is an O / D type emulsion composition, Cleansing cosmetics. (2) The cleansing cosmetic according to (1), wherein the surfactin or a salt thereof in component (A) has a structure represented by the following formula (1): [ka] (In formula (1), X is a residue of an amino acid selected from leucine, isoleucine, and valine, R is an alkyl group having 9 to 18 carbon atoms, and M + are each independently a hydrogen ion, an alkali metal ion, an ammonium ion, or a pyridinium ion. (3) The cleansing cosmetic according to (1) or (2), wherein component (B) is one or more selected from the group consisting of natural surfactants, nonionic surfactants, cationic surfactants, and amphoteric surfactants. (4) The cleansing cosmetic according to any one of (1) to (3), wherein component (B) is one or more selected from nonionic surfactants. (5) The cleansing cosmetic according to any one of (1) to (4), wherein the molecular weight of component (B) is 500 or more. (6) The cleansing cosmetic according to any one of (1) to (5), further comprising an oil, the oil being at least one selected from the group consisting of hydrocarbon oils, ester oils, fats and oils, and silicone oils. (7) The cleansing cosmetic according to (6), wherein the molecular weight of the oil is 320 or more. (8) The cleansing cosmetic according to (6) or (7), wherein the viscosity of the oil at 25°C is 15 mPa·s or more. (9) The cleansing cosmetic according to any one of (6) to (8), wherein the oil content is 0.1% by mass to 80% by mass relative to the total mass of the cleansing cosmetic. (10) The cleansing cosmetic according to any one of (1) to (9), further comprising a polyhydric alcohol, wherein the polyhydric alcohol is one or more selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, isoprene glycol, 1,3-butylene glycol, propanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, hexylene glycol, xylitol, sorbitol, maltitol, glycerin, diglycerin, and polyglycerin. (11) The cleansing cosmetic according to (10), wherein the content of the polyhydric alcohol is 5% by mass to 90% by mass relative to the total mass of the cleansing cosmetic. (12) The cleansing cosmetic according to any one of (1) to (11), further comprising water. (13) The cleansing cosmetic according to (12), wherein the water content is 0.1% by mass to 90% by mass relative to the total mass of the cleansing cosmetic. [Effects of the Invention]

[0009] The present invention provides a mild cleansing cosmetic that can be used even on sensitive skin. DETAILED DESCRIPTION OF THE INVENTION

[0010] Preferred embodiments of the present invention will now be described in detail. The cleansing cosmetic of the present invention is not limited to the following embodiments, and can be embodied in various forms incorporating modifications and improvements that those skilled in the art can make without departing from the spirit of the present invention. In this specification, the symbol "to" is used to mean a range having the numerical values ​​before and after it as the lower and upper limits. In numerical ranges described in stages in this specification, the upper or lower limit described in one numerical range may be replaced with the upper or lower limit described in another stage. The upper or lower limit of a numerical range described in this specification may be replaced with a value shown in the examples.

[0011] (A) at least one component selected from surfactin and salts thereof (also referred to as "component (A)");

[0012] Surfactin is a lipopeptide biosurfactant that belongs to the peptide-type biosurfactants and is produced by microorganisms. It exhibits surface activity and has a peptide containing a hydrophobic group and a hydrophilic portion.

[0013] Surfactin and surfactin salts can be represented by the following general formula (1): As the surfactin and surfactin salts, one type or two or more types may be used.

[0014] [ka] [In formula (1), X represents an amino acid residue selected from leucine, isoleucine, and valine, R represents an alkyl group having 9 to 18 carbon atoms, and M + are independently hydrogen ions (H + ), an alkali metal ion, an ammonium ion, or a pyridinium ion.

[0015] In addition, M+ If CO2 is hydrogen ion, ‐ (M + ) is a hydroxyl group (COOH group). + When M is a hydrogen ion, it is a surfactin, and at least one of M + is an alkali metal ion, an ammonium ion or a pyridinium ion, it means a salt of surfactin. The general formula of surfactin is shown in the following general formula (1').

[0016] [ka] [In formula (1′), X and R have the same meanings as in formula (1)]

[0017] X is an amino acid residue selected from leucine, isoleucine and valine, and may be either an L-amino acid residue or a D-amino acid residue, with an L-amino acid residue being preferred.

[0018] R is an alkyl group having 9 to 18 carbon atoms, and is a linear or branched monovalent saturated hydrocarbon group having at least 9 and at most 18 carbon atoms. Examples of the alkyl group having 9 to 18 carbon atoms include an n-nonyl group, a 6-methyloctyl group, a 7-methyloctyl group, an n-decyl group, an 8-methylnonyl group, an n-undecyl group, a 9-methyldecyl group, an n-dodecyl group, a 10-methylundecyl group, an n-tridecyl group, an 11-methyldodecyl group, an n-tetradecyl group, an n-pentadecyl group, an n-hexadecyl group, an n-heptadecyl group, and an n-octadecyl group, with the 10-methylundecyl group being preferred.

[0019] M + are independently hydrogen ions (H + ), alkali metal ions, ammonium ions, or pyridinium ions. The alkali metal ions are not particularly limited, but include lithium ions, sodium ions, and potassium ions. The ammonium ions are not particularly limited, but include, for example, N(R 1 )4 +Examples of ammonium ions include those represented by R 1 Each independently represents hydrogen or an organic group. As an ammonium ion, R 1 A preferred embodiment of the quaternary ammonium ion is one in which all of the groups are organic groups. Examples of the organic group include an alkyl group, an aralkyl group, and an aryl group. Specifically, the alkyl group includes an alkyl group having 1 to 10 carbon atoms, such as methyl, ethyl, n-propyl, isopropyl, n-butyl, and t-butyl. The aralkyl group includes an aralkyl group having 7 to 12 carbon atoms, such as benzyl, methylbenzyl, and phenylethyl. The aryl group includes an aryl group having 6 to 15 carbon atoms, such as phenyl, toluyl, and xylyl. Examples of the ammonium ion include a tetramethylammonium ion and a tetraethylammonium ion. The pyridinium ion is not particularly limited. In the pyridinium ion, a hydrogen atom bonded to a carbon atom constituting a pyridine ring may be substituted with an organic group. In addition, the pyridinium ion may include a pyridinium ion in which a N atom constituting a pyridine ring is substituted with an organic group. + The bond to may be, for example, hydrogen or an organic group. The organic group contained in the pyridinium ion is R 1 The organic groups mentioned in the explanation of 1. above can be used appropriately.

[0020] Two M present in general formula (1) + may be the same or different. + For example, some M + are hydrogen ions, and some M + In one preferred embodiment, M is an alkali metal ion. The alkali metal ion is not particularly limited, but may be a lithium ion, a sodium ion, a potassium ion, or the like. + However, if there are two or more types of ions, when focusing on one molecule (salt), two M + may be the same type of ion. +When there are two types of ions, the ratio (molar ratio) of a certain ion A to a certain ion B is, for example, 1:10 to 10:1, preferably 1:5 to 5:1, and more preferably 1:3 to 3:1. + Some of them are hydrogen ions and some are sodium ions (Na + ) is one of the preferred embodiments.

[0021] Peptide biosurfactants such as surfactin or a surfactin salt can be obtained by culturing a microorganism, for example, a strain belonging to Bacillus subtilis, and isolating it from the culture medium according to a known method. A purified product may be used, or an unpurified product, for example, the culture medium, may be used as is. Furthermore, those obtained by chemical synthesis methods can also be used as long as they have the same molecular structure. Commercially available products can also be used.

[0022] The content of component (A) is 0.3% by mass or more, and in one embodiment 0.5% by mass or more, and in one embodiment 0.8% by mass or more and 3.0% by mass or less, and in one embodiment 2.5% by mass or less, and in one embodiment 2.0% by mass or less, and in one embodiment 1.5% by mass or less, relative to the total mass of the cleansing cosmetic. By adjusting the content of component (A) within the above range, poor emulsification can be avoided and compatibility with makeup can be improved.

[0023] (B) A surfactant other than component (A) and an anionic surfactant (also referred to as "component (B)") Component (B) represents a surfactant other than component (A) and anionic surfactants.

[0024] Component (B) is not limited as long as it is a surfactant other than component (A) and anionic surfactants. Component (B) can be any surfactant known in the art, including natural surfactants, nonionic surfactants, cationic surfactants, and amphoteric surfactants. One or more of these can be used.

[0025] Examples of natural surfactants include at least one biosurfactant selected from peptide biosurfactants and sugar biosurfactants. From the viewpoints of odor and food hygiene, it is preferable to use a biosurfactant that is not derived from Wickerhamomyces anomalus yeast.

[0026] Examples of peptide biosurfactants include lipopeptide biosurfactants. Lipopeptide biosurfactants have peptides containing a hydrophobic group and a hydrophilic portion, exhibit surface activity, and are produced by microorganisms. Examples of lipopeptide biosurfactants include arthrofactin, iturin, fengicin, serawettin, lykesin, viscosin, and salts thereof (excluding anionic surfactants).

[0027] Peptide biosurfactants can be obtained by culturing a microorganism, for example, a strain belonging to Bacillus subtilis, and isolating it from the culture medium according to a known method, similar to the method for producing surfactin. A purified product may be used, or it may be used unpurified, for example, as the culture medium. Furthermore, those obtained by chemical synthesis methods can also be used in the same way as long as they have the same molecular structure. Commercially available products can also be used.

[0028] Examples of sugar-type biosurfactants include rhamnolipids, sophorolipids, mannosylerythritol lipids, cellobiose lipids, trehalose lipids, succinoyltrehalose lipids, glucose lipids, polyol lipids, oligosaccharide fatty acid esters, and salts thereof (excluding anionic surfactants).

[0029] The sugar-type biosurfactant is preferably at least one sugar-type biosurfactant selected from rhamnolipids and sophorolipids.

[0030] The glyco-type biosurfactant can be obtained according to a known method, and commercially available products can also be used.

[0031] A preferred embodiment of the natural surfactant is at least one biosurfactant selected from rhamnolipids and sophorolipids.

[0032] Any nonionic surfactant known in the art can be used, for example, polyoxyethylene alkyl ethers such as laureth-4, laureth-7, laureth-9, laureth-21, laureth-23, ceteth-10, ceteth-20, steareth-2, steareth-20, steareth-21, steareth-25, beheneth-20, beheneth-30, oleth-2, and oleth-10; Polyoxyethylene fatty acid esters such as PEG-25 stearate, PEG-40 stearate, PEG-45 stearate, PEG-55 stearate, PEG-75 stearate, PEG-100 stearate, PEG-150 stearate, PEG-150 distearate; Glycerin fatty acid esters such as glyceryl myristate, glyceryl stearate, glyceryl isostearate, glyceryl oleate, glyceryl dioleate, and glyceryl distearate; Polyglycerin fatty acid esters such as Polyglyceryl-10 stearate, Polyglyceryl-10 distearate, Polyglyceryl-10 tristearate, Polyglyceryl-10 pentastearate, Polyglyceryl-10 oleate, Polyglyceryl-10 isostearate, Polyglyceryl-10 myristate, Polyglyceryl-6 laurate, Polyglyceryl-10 laurate, Polyglyceryl-4 stearate, Polyglyceryl-6 stearate, Polyglyceryl-2 stearate; Polyoxyethylene glycerin fatty acid esters such as PEG-6 glyceryl isostearate, PEG-20 glyceryl isostearate, PEG-20 glyceryl triisostearate, PEG-20 glyceryl tristearate, and PEG-7 glyceryl cocoate; Sorbitan fatty acid esters such as sorbitan laurate, sorbitan palmitate, sorbitan stearate, sorbitan isostearate, sorbitan oleate, sorbitan sesquistearate, sorbitan sesquiisostearate, sorbitan sesquioleate, sorbitan trioleate, sorbitan tristearate, sorbitan olivoate, and sorbitan coconutate; Polyoxyethylene sorbitan fatty acid esters such as POE (20) sorbitan laurate, POE (20) sorbitan stearate, POE (20) sorbitan oleate, and POE (20) sorbitan isostearate Examples include:

[0033] Any cationic surfactant known in the art can be used, and examples thereof include alkylamine salts, polyamine and alkanolamine fatty acid derivatives, alkyl quaternary ammonium salts, and cyclic quaternary ammonium salts.

[0034] Any amphoteric surfactant known in the art can be used, and examples thereof include amino acid and betaine carboxylic acid types, sulfate ester types, sulfonic acid types, phosphate ester types, and phospholipids.

[0035] The molecular weight of component (B) is not limited. The molecular weight of component (B) is usually 500 or more, in one embodiment 600 or more, in one embodiment 700 or more, in one embodiment 1000 or more, and in one embodiment 1500 or more. The higher the molecular weight of component (B), the more irritating it can be. On the other hand, the upper limit of the molecular weight of component (B) is not limited. The molecular weight of component (B) is usually 10,000 or less, in one embodiment 5,000 or less. The molecular weight of component (B) is a calculated value obtained from the molecular structure (for example, when component (B) is a polymer, the constituent repeating units are the average value calculated from the number average molecular weight). Furthermore, when component (B) is a mixture of two or more types, it is preferable that the molecular weight of at least one of the components constituting component (B) is within the above range. The content of component (B) having a molecular weight within the above range is more preferably 50% by mass or more, even more preferably 70% by mass or more, particularly preferably 90% by mass or more, and most preferably 100% by mass, of the total amount of component (B).

[0036] For example, examples of component (B) having a molecular weight of 500 or more and less than 600 include laureth-9, polyglyceryl-4 stearate, and PEG-7 glyceryl coconut oil fatty acid. Examples of component (B) having a molecular weight of 600 or more and less than 700 include ceteth-10, oleth-10, glyceryl dioleate, glyceryl distearate, polyglyceryl-6 laurate, and PEG-6 glyceryl isostearate. Examples of component (B) having a molecular weight of 700 or more and less than 1000 include polyglyceryl-10 myristate, polyglyceryl-10 laurate, and polyglyceryl-6 stearate. Examples of the component (B) having a molecular weight of 1000 or more and less than 1500 include laureth-21, laureth-23, ceteth-20, steareth-20, steareth-21, steareth-25, beheneth-20, PEG-25 stearate, polyglyceryl-10 stearate, polyglyceryl-10 distearate, polyglyceryl-10 oleate, polyglyceryl-10 isostearate, PEG-20 glyceryl isostearate, sorbitan trioleate, sorbitan tristearate, POE (20) sorbitan laurate, POE (20) sorbitan stearate, POE (20) sorbitan oleate, and POE (20) sorbitan isostearate. Examples of component (B) having a molecular weight of 1500 or more include beheneth-30, PEG-40 stearate, PEG-45 stearate, PEG-55 stearate, PEG-75 stearate, PEG-100 stearate, PEG-150 stearate, PEG-150 distearate, polyglyceryl-10 tristearate, polyglyceryl-10 pentastearate, PEG-20 glyceryl triisostearate, and PEG-20 glyceryl tristearate.

[0037] The HLB value of component (B) is not limited. Here, the HLB value is a value from 0 to 20 that represents the degree of affinity of a surfactant for water and oil, with values ​​closer to 0 indicating higher lipophilicity and values ​​closer to 20 indicating higher hydrophilicity. The HLB value of component (B) is typically 15 or less, and in one embodiment, 11 or less. The lower the HLB value of component (B), the better the makeup compatibility; therefore, when the HLB value of component (B) is within the above range, makeup compatibility can be further improved. The lower limit of the HLB value of component (B) is not limited. The HLB value of component (B) is typically 7 or more, and in one embodiment, 8 or more. Note that when component (B) is a mixture of two or more types, the HLB value of component (B) is the average of the HLB values. For example, if component (B) contains B-1 having an HLB value of n and B-2 having an HLB value of m, and B-1 accounts for A mol% and B-2 accounts for B mol% of the total amount of substance of component (B), the HLB value of component (B) can be calculated as n×A / 100+m×B / 100.

[0038] As component (B) having an HLB value within the above range, for example, polyoxyethylene glycerin fatty acid esters, polyoxyethylene sorbitan fatty acid esters, and polyglycerin fatty acid esters are preferred, with polyoxyethylene glycerin fatty acid esters and polyoxyethylene sorbitan fatty acid esters being particularly preferred.

[0039] The content of component (B) is 1.0% by mass or more, and in one embodiment 1.5% by mass or more, and in one embodiment 2.0% by mass or more, and in one embodiment 2.5% by mass or more, and in one embodiment 3.0% by mass or more, and in one embodiment 3.5% by mass or more, and 6.0% by mass or less, and in one embodiment 5.5% by mass or less, and in one embodiment 5.0% by mass or less, and in one embodiment 4.5% by mass or less, relative to the total mass of the cleansing cosmetic. By adjusting the content of component (B) within the above range, a decrease in cleansing power can be avoided and irritation to the skin can be suppressed.

[0040] The mass ratio of component (B) to component (A) ((B) / (A)) is not limited. The mass ratio of component (B) to component (A) is, for example, 1 or more, and in one embodiment, 2 or more, and in one embodiment, 3 or more, and 34 or less, and in one embodiment, 30 or less, and in one embodiment, 20 or less, and in one embodiment, 10 or less, and in one embodiment, 8 or less, and in one embodiment, 6 or less. By adjusting the mass ratio of component (B) to component (A) within the above range, it is possible to improve compatibility with makeup and reduce irritation to the skin.

[0041] (C) Other ingredients (also referred to as "ingredient (C)") The composition of the present invention may contain optional components other than components (A) and (B), such as oils, polyhydric alcohols, water, fragrances known in the art, pH adjusters, thickeners, preservatives, extract components, higher alcohols, fatty acids, oil-soluble components, water-soluble components, and powder components, provided that the effects of the present invention are not impaired. Two or more of these may be used in combination. The content of the optional components is not particularly limited, provided that the effects of the present invention are not impaired, and can be adjusted as needed.

[0042] The oil may be any oil known in the art, and is not limited thereto. Examples of the oil include hydrocarbon oils, ester oils, fats and oils, and silicone oils. These may be used alone or in combination of two or more.

[0043] Any hydrocarbon oil known in the art can be used, and examples thereof include liquid paraffin, ozokerite, squalane, pristane, paraffin, ceresin, squalene, petrolatum, microcrystalline wax, olefin oligomer, tetradecane, isododecane, and isohexadecane.

[0044] As the ester oil, for example, monoester oil, diester oil, triester oil, and tetraester oil can be used.

[0045] Examples of monoester oils include isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, tricyclodecanemethyl isononanoate, hexyl laurate, octyldodecyl malate, cetyl 2-ethylhexanoate, 2-hexyldecyl 2-ethylhexanoate, isopropyl myristate, 2-hexyldecyl myristate, octyldodecyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate, ethyl isostearate, isopropyl isostearate, isobutyl isostearate, 2-hexyldecyl isostearate, 2-ethylhexyl hydroxystearate, octyldodecyl oleate, oleyl oleate, octyldodecyl ricinoleate, and propylene carbonate.

[0046] Examples of diester oils include di-2-hexylhexyl succinate, bis-ethoxydiglycol succinate, di(caprylic / capric)propanediol, neopentyl glycol diisononanoate, neopentyl glycol dicaprate, glyceryl diisostearate, polyglyceryl diisostearate, propanediol diisostearate, diisostearyl malate, di(phytosteryl / octyldodecyl) lauroyl glutamate, di(cholesteryl / behenyl / octyldodecyl) lauroyl glutamate, di(octyldodecyl / phytosteryl / behenyl) lauroyl glutamate, neopentyl glycol di-2-ethylhexanoate, and neopentyl glycol dioctanoate.

[0047] Examples of triester oils include trimethylolpropane triisostearate, glyceryl triisostearate, diglyceryl triisostearate, trimethylolpropane tri-2-ethylhexanoate, glyceryl tri-2-ethylhexanoate, tri(caprylic / capric)glyceryl, and tritridecyl trimellitate.

[0048] Examples of tetraester oils include pentaerythrityl tetraoctanoate, diglyceryl tetraisostearate, dipentaerythrityl tetraisostearate, and pentaerythrityl tetraisostearate.

[0049] Any oil or fat known in the art can be used, for example: Liquid oils and fats such as avocado oil, camellia oil, turtle oil, macadamia nut oil, sunflower oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, camellia oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, Chinese tung oil, Japanese tung oil, jojoba oil, and rice germ oil; Solid fats and oils such as cocoa butter, coconut oil, horse fat, hardened coconut oil, palm oil, beef tallow, palm kernel oil, hardened oil, Japan wax, hardened castor oil, shea butter, beeswax, carnauba wax, candelilla wax, and ivy wax Examples include:

[0050] Any silicone oil known in the art can be used, and examples thereof include dimethicone, diphenyl dimethicone, cyclopentasiloxane, diphenylsiloxyphenyl trimethicone, dimethiconol, amodimethicone, aminoethylaminopropyl dimethicone, and aminopropyl dimethicone.

[0051] The viscosity of the oil is not limited. When measured using a Brookfield Viscometer Model LVF device under conditions of 25°C, Spindle No. 1, and a rotation speed of 60 rpm after 60 seconds of rotation, the viscosity of the oil is typically 15 mPa·s or more, and in one embodiment, 20 mPa·s or more. The higher the viscosity of the oil, the more the oil remains on the skin after rinsing, thereby reducing irritation in the cleansing cosmetic product and improving the film-like, protective, and moisturizing feel. On the other hand, the upper limit of the viscosity of the oil is not limited. When measured using a Brookfield Viscometer Model LVF device under conditions of 25°C, Spindle No. 1, and a rotation speed of 60 rpm after 60 seconds of rotation, the viscosity of the oil is typically 30 mPa·s or less, and in one embodiment, 25 mPa·s or less. The lower the viscosity of the oil, the higher the compatibility with makeup, and the better the makeup blendability of the cleansing cosmetic product. When the oil is a mixture of two or more types, the viscosity of the oil is the viscosity of the mixture.

[0052] The molecular weight of the oil is not limited. The molecular weight of the oil is typically 300 or more, and in one embodiment, 320 or more. The larger the molecular weight of the oil, the more inhibited its penetration into the skin and the more oil remains on the skin after rinsing, thereby reducing irritation in cleansing cosmetics and improving the film-like, protective, and moisturizing feel. On the other hand, the upper limit of the molecular weight of the oil is not limited. The molecular weight of the oil is typically 500 or less, and in one embodiment, 450 or less. The smaller the molecular weight of the oil, the higher its affinity with makeup and the better makeup blendability in cleansing cosmetics. The molecular weight of the oil is a molecular weight calculated from the structure of the oil. Furthermore, for example, when the oil is a mixture of two or more types of oil, it is preferable that the molecular weight of at least one of the components constituting the oil is within the above range. The content of the oil having a molecular weight within the above range is more preferably 20% by mass or more, even more preferably 30% by mass or more, and particularly preferably 40% by mass or more, of the total oil.

[0053] As the oil having the viscosity and molecular weight within the above ranges, for example, one that is liquid at 25°C is preferred, and particularly preferred are hydrocarbon oils (particularly squalane, isododecane, and tetradecane), monoester oils (particularly isononanoic acid esters, 2-ethylhexanoic acid esters, and oleic acid esters), triester oils (particularly tri(caprylic / capric acid)glyceryl), and silicone oils (particularly dimethicone and cyclopentasiloxane).

[0054] The content of oil is not limited.When the cleansing cosmetic of the present invention contains oil, the content of oil is, for example, based on the total mass of the cleansing cosmetic, usually 0.1% by mass or more, in one embodiment 0.5% by mass or more, in one embodiment 1% by mass or more, in one embodiment 3% by mass or more, in one embodiment 5% by mass or more, in one embodiment 10% by mass or more, in one embodiment 20% by mass or more, in one embodiment 30% by mass or more, in one embodiment 40% by mass or more, in one embodiment 50% by mass or more, in one embodiment 55% by mass or more, in one embodiment 60% by mass or more, in one embodiment 65% by mass or more, and usually 80% by mass or less, in one embodiment 78% by mass or less, in one embodiment 76% by mass or less, and in one embodiment 74% by mass or less.By adjusting the content of oil within the above range, poor emulsification can be avoided.

[0055] The mass ratio of oil to component (B) (oil / (B)) is not limited. The mass ratio of oil to component (B) is usually 3.0 or more, and in one embodiment 5 or more, in one embodiment 10 or more, and in one embodiment 15 or more, and 75 or less, in one embodiment 50 or less, in one embodiment 30 or less, and in one embodiment 20 or less. By adjusting the mass ratio of oil to component (B) within the above range, the film-forming feeling, protective feeling, and moist feeling can be improved.

[0056] A polyhydric alcohol refers to an organic compound having two or more alcoholic hydroxy groups per molecule. Any polyhydric alcohol known in the art can be used without limitation. Examples of polyhydric alcohols include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, isoprene glycol, 1,3-butylene glycol, propanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, hexylene glycol, xylitol, sorbitol, maltitol, glycerin, diglycerin, polyglycerin, and glycosyl trehalose. These may be used alone or in combination.

[0057] The number of OH groups per molecule of the polyhydric alcohol is not limited. The number of OH groups per molecule of the polyhydric alcohol is usually 2 or more, in one embodiment 3 or more, and in one embodiment 6 or more. The larger the number of OH groups per molecule of the polyhydric alcohol, the higher the hydrophilicity, and the more water-compatible the cleansing cosmetic can be. On the other hand, the upper limit of the number of OH groups per molecule of the polyhydric alcohol is not limited. When the polyhydric alcohol is not a polymer, the number of OH groups per molecule of the polyhydric alcohol is usually 12 or less. When the polyhydric alcohol is a polymer, the number of OH groups per molecule of the polyhydric alcohol is not limited. Note that when the polyhydric alcohol is a mixture of two or more types, the number of OH groups per molecule of the polyhydric alcohol is the average number of OH groups per molecule. For example, if a polyhydric alcohol contains polyhydric alcohol-1, which has n OH groups per molecule, and polyhydric alcohol-2, which has m OH groups per molecule, and polyhydric alcohol-1 accounts for A mol% and polyhydric alcohol-2 accounts for B mol% of the total amount of polyhydric alcohol, the number of OH groups per molecule of the polyhydric alcohol can be calculated as n×A / 100+m×B / 100.

[0058] Examples of polyhydric alcohols having the number of OH groups per molecule within the above range include glycerin, diglycerin, sorbitol, maltitol, and polyethylene glycol, with glycerin and sorbitol being particularly preferred.

[0059] The content of polyhydric alcohol is not limited. When the cleansing cosmetic of the present invention contains a polyhydric alcohol, the content of the polyhydric alcohol is, for example, typically 5% by mass or more, in one embodiment 6% by mass or more, in one embodiment 7% by mass or more, in one embodiment 8% by mass or more, in one embodiment 9% by mass or more, in one embodiment 10% by mass or more, in one embodiment 11% by mass or more, in one embodiment 12% by mass or more, and typically 90% by mass or less, in one embodiment 80% by mass or less, in one embodiment 70% by mass or less, in one embodiment 60% by mass or less, in one embodiment 50% by mass or less, in one embodiment 40% by mass or less, in one embodiment 30% by mass or less, in one embodiment 20% by mass or less, in one embodiment 19% by mass or less, in one embodiment 18% by mass or less, in one embodiment 17% by mass or less, and in one embodiment 16% by mass or less, relative to the total mass of the cleansing cosmetic. By adjusting the content of the polyhydric alcohol to the above range, poor emulsification can be avoided.

[0060] The mass ratio of the polyhydric alcohol to component (A) (polyhydric alcohol / (A)) is not limited. The mass ratio of the polyhydric alcohol to component (A) is usually 1.40 or more, and in one embodiment, 1.5 or more, in one embodiment, 2 or more, in one embodiment, 3 or more, in one embodiment, 4 or more, in one embodiment, 5 or more, in one embodiment, 6 or more, in one embodiment, 7 or more, in one embodiment, 8 or more, in one embodiment, 9 or more, in one embodiment, 10 or more, in one embodiment, 11 or more, in one embodiment, 12 or more, in one embodiment, 13 or more, in one embodiment, 14 or more, and is 300 or less, in one embodiment, 200 or less, in one embodiment, 100 or less, in one embodiment, 50 or less, in one embodiment, 40 or less, in one embodiment, 30 or less, in one embodiment, 20 or less, in one embodiment, 18 or less, and in one embodiment, 16 or less. By adjusting the mass ratio of the polyhydric alcohol to component (A) within the above range, poor emulsification can be avoided and water compatibility can be improved.

[0061] Water refers to water or purified water as listed in the cosmetic ingredient label. The water content is not limited. When the cleansing cosmetic of the present invention contains water, the water content is, for example, typically 0.1% by mass or more, in one embodiment 0.5% by mass or more, in one embodiment 1% by mass or more, in one embodiment 2% by mass or more, in one embodiment 3% by mass or more, in one embodiment 4% by mass or more, in one embodiment 5% by mass or more, in one embodiment 6% by mass or more, in one embodiment 7% by mass or more, and typically 90% by mass or less, in one embodiment 80% by mass or less, in one embodiment 70% by mass or less, in one embodiment 60% by mass or less, in one embodiment 50% by mass or less, in one embodiment 40% by mass or less, in one embodiment 30% by mass or less, in one embodiment 20% by mass or less, in one embodiment 15% by mass or less, and in one embodiment 12% by mass or less, relative to the total mass of the cleansing cosmetic.

[0062] Examples of fragrances include hinokitiol, lavender oil, peppermint oil, orange oil, ylang-ylang oil, frankincense oil, laurel oil, and rosewood oil.

[0063] The pH adjuster may be any inorganic acid, organic acid, inorganic base, or organic base known in the art. Organic acids or inorganic bases are preferred. Examples of organic acids include citric acid, lactic acid, butyric acid, and glycolic acid, and examples of inorganic bases include sodium hydroxide and potassium hydroxide.

[0064] Any thickener known in the art can be used, for example: Plant-based water-soluble polymers such as gum arabic, tragacanth gum, galactan, guar gum, locust bean gum, tamarind gum, carob gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), algae colloid (cassow extract), starch, etc.; Microbial water-soluble polymers such as xanthan gum, dextran, succinoglycan, and pullulan; Animal-based water-soluble polymers such as collagen, casein, albumin, and gelatin; Starch-based water-soluble polymers such as carboxymethyl starch, methylhydroxypropyl starch, hydrogenated starch hydrolysates, and corn starch; Cellulose-based water-soluble polymers such as methylcellulose, nitrocellulose, ethylcellulose, hydroxypropylmethylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, hydroxypropylcellulose, carboxymethylcellulose (CMC), crystalline cellulose, and cellulose powder; Alginate-based water-soluble polymers such as sodium alginate and propylene glycol alginate; Synthetic polymers such as polyvinyl alcohol, polyvinylpyrrolidone, carboxyvinyl polymer, polyethylene glycol 20,000, polyethylene glycol 4,000,000, polyethylene glycol 600,000, polyoxyethylene polyoxypropylene copolymer, acrylic acid-alkyl methacrylate copolymer (acrylates / alkyl acrylate (C10-30)) crosspolymer, sodium polyacrylate, polyacrylamide; clay minerals such as bentonite, Al / Mg silicate, laponite, hectorite, and montmorillonite; Cationic polymers such as polyethyleneimine, O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethylcellulose chloride, dimethyldiallylammonium chloride-acrylamide copolymer solution, 2-methacryloyloxyethylphosphorylcholine-butyl methacrylate copolymer solution, [2-hydroxy-3-(trimethylammonio)propyl]starch chloride, and O-[2-hydroxy-3(trimethylammonio)propyl]guar gum chloride Examples include:

[0065] Any preservative known in the art can be used, and examples thereof include phenoxyethanol, hinokitiol, phenethyl alcohol, tea extract, lactobacillus / radish root fermented liquid, lactobacillus / wasabi root fermented extract, and white willow bark extract.

[0066] Any extract component known in the art can be used, and examples thereof include Angelica keiskei extract, Acacia japonica extract, Avocado extract, Hydrangea tea extract, Gynostemma pentaphyllum extract, Althaea officinalis extract, Arnica extract, oil-soluble Arnica extract, Almond extract, Aloe extract, Angelica juncea extract, Ginkgo biloba extract, Nettle extract, Iris root extract, Fennel extract, Turmeric extract, Angelica jasmine extract, Echinacea leaf extract, Scutellaria root extract, Phellodendron bark extract, Coptis jasmine extract, Barley extract, Okra extract, Hypericum perforatum extract, oil-soluble Hypericum extract, dead nettle extract, oil-soluble dead nettle extract, ononis extract, watercress extract, orange extract, orange flower water, seaweed extract, persimmon tannin, pueraria root extract, valerian extract, cattail extract, chamomilla extract, oil-soluble chamomilla extract, chamomilla water, oat extract, carrot extract, oil-soluble carrot extract, carrot oil, artemisia capillaris extract, licorice extract, licorice extract powder, licorice flavonoids, cantharides tincture, raspberry extract, kiwi extract, cinchona extract, cucumber extract, kyoni extract, quince seed extract, gardenia extract, kumazasa extract, sophora flavescens extract, walnut shell extract, grapefruit extract, clematis extract, brown sugar extract, chlorella extract, mulberry extract, cinnamon bark extract, gentian extract, geranium extract, black tea extract, watercress extract, burdock extract, oil-soluble burdock extract, wheat germ extract, hydrolyzed wheat powder, rice bran extract, fermented rice bran extract, comfrey extract, Chinese cabbage extract, saffron extract, soapwort extract, oil-soluble salvia extract, hawthorn extract, Japanese pepper extract, Shiitake mushroom extract, shiitake mushroom extract powder, rehmannia root extract, lithospermum root extract, oil-soluble lithospermum root extract, perilla extract, linden extract, oil-soluble linden extract, meadowsweet extract, peony extract, Job's tears extract, ginger extract, oil-soluble ginger extract, ginger tincture, calamus root extract, birch extract, oil-soluble birch extract, birch sap, honeysuckle extract, horsetail extract, oil-soluble horsetail extract, scordinin, stevia extract, ivy extract, hawthorn extract, elderberry extract, juniper extract,Yarrow extract, oil-soluble yarrow extract, peppermint extract, sage extract, oil-soluble sage extract, sage water, mallow extract, celery extract, cnidium extract, cnidium water, Swertia japonica extract, soybean extract, Chinese ginseng extract, thyme extract, tea extract, tea distillate, tea fruit extract, clove extract, tangerine peel extract, camellia extract, Centella asiatica extract, oil-soluble walnut extract, duke extract, terminalia extract, capsicum tincture, Bark extract, oil-soluble Angelica acutiloba extract, Angelica acutiloba water, Calendula officinalis extract, oil-soluble Calendula officinalis extract, soy milk powder, Peach kernel extract, Spruce extract, Houttuynia cordata extract, Tomato extract, Tormentilla extract, Natto extract, Carrot extract, oil-soluble Carrot extract, Garlic extract, Wild rose extract, Oil-soluble Wild rose extract, Garlic extract, Garlic extract, Garlic root extract, Bark extract, Parsley extract, Barley leaf juice concentrate, Distilled peppermint water, Hamamelis water, Hamamelis extract, Rose extract, Parietaria Kisu, holly extract, loquat leaf extract, oil-soluble loquat leaf extract, coltsfoot extract, poria extract, butcher's broom extract, butcher's broom extract powder, grape extract, grape leaf extract, grape water, hayflower extract, loofah extract, loofah water, safflower extract, oil-soluble linden extract, linden water, peony extract, hop extract, oil-soluble hop extract, pine extract, milk thistle extract, horse chestnut extract, oil-soluble horse chestnut extract, soapberry extract, melissa extract Examples of suitable emollients include melilot extract, peach leaf extract, oil-soluble peach leaf extract, bean sprout extract, cornflower extract, cornflower water, eucalyptus extract, saxifrage extract, lily extract, coix seed extract, oil-soluble coix seed extract, mugwort extract, mugwort water, lavender extract, lavender water, apple extract, lychee extract, lettuce extract, lemon extract, astragalus extract, rose water, rosemary extract, oil-soluble rosemary extract, Roman chamomile extract, and burnet extract.

[0067] Any higher alcohol known in the art can be used, and examples thereof include lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, cetostearyl alcohol, isostearyl alcohol, 2-octyldodecanol, oleyl alcohol, and behenyl alcohol.

[0068] Any fatty acid known in the art can be used, and examples thereof include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, undecylenic acid, tall acid, isostearic acid, linoleic acid, linolenic acid, eicosapentaenoic acid (EPA), docosahexaenoic acid (DHA), and behenic acid.

[0069] Any oil-soluble ingredient known in the art can be used, and examples thereof include tocopherol, ascorbyl tetrahexyldecanoate, retinol, and ceramide.

[0070] Any water-soluble component known in the art can be used, and examples thereof include chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, elastin, amino acids, nucleic acids, bile salts, dl-pyrrolidone carboxylate, hydrolyzed collagen, and diglycerin (EO)PO adducts.

[0071] The powder component may be any powder component known in the art, such as: Inorganic powders such as talc, kaolin, mica, sericite (sericite), muscovite, phlogopite, synthetic mica, red mica, biotite, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, and boron nitride; Metal soap powders such as zinc myristate, calcium palmitate, and aluminum stearate; Organic powders such as polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, styrene-acrylic acid copolymer resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, silicone powder, etc.; Inorganic pigments such as red iron oxide, yellow iron oxide, black iron oxide, ultramarine, chromium oxide, manganese violet, etc.; Pearl pigments such as titanium dioxide coated mica, titanium dioxide coated bismuth oxychloride, titanium dioxide coated talc, colored titanium dioxide coated mica, bismuth oxychloride, and fish scale foil; Metal powder materials such as aluminum powder and copper powder; Organic pigments such as Red No. 201, Red No. 202, Yellow No. 401, Blue No. 403, Blue No. 404; Natural pigments such as chlorophyll and beta-carotene Examples include:

[0072] In one embodiment, the cleansing cosmetic of the present invention further comprises an oil as component (C) in addition to components (A) and (B). In one embodiment, the cleansing cosmetic of the present invention further comprises a polyhydric alcohol as component (C) in addition to components (A) and (B). In one embodiment, the cleansing cosmetic of the present invention further comprises water as component (C) in addition to components (A) and (B). In one embodiment, the cleansing cosmetic of the present invention further comprises an oil and a polyhydric alcohol as component (C) in addition to components (A) and (B). In one embodiment, the cleansing cosmetic of the present invention further comprises an oil and water as component (C) in addition to components (A) and (B). In one embodiment, the cleansing cosmetic of the present invention further comprises a polyhydric alcohol and water as component (C) in addition to components (A) and (B). In one embodiment, the cleansing cosmetic of the present invention further comprises an oil, a polyhydric alcohol, and water as component (C) in addition to components (A) and (B). In one embodiment, the cleansing cosmetic of the present invention further comprises an oil, a polyhydric alcohol, and water as component (C) in addition to components (A) and (B).

[0073] The cleansing cosmetic of the present invention is an O / D type emulsion composition. Here, the O / D type emulsion composition is an emulsion composition in which a dispersed phase O (e.g., oil as component (C)) is dispersed in a continuous phase D (e.g., polyhydric alcohol as component (A), component (B), and component (C)). The composition of the D phase is not particularly limited as long as it contains a polyhydric alcohol and a surfactant.

[0074] The form of the cleansing cosmetic of the present invention is not limited and can be appropriately selected depending on the intended use. For example, the cleansing cosmetic of the present invention can be in a liquid or semi-solid form, such as a gel. The form of the cleansing cosmetic of the present invention can be appropriately adjusted based on the content of each component, for example, the content of oil, polyhydric alcohol, and water, particularly the content of water, and the type and content of thickener. In one embodiment, the form of the cleansing cosmetic of the present invention can be adjusted by, for example, changing the content of water, polyhydric alcohol, and oil. For example, when adjusting the form by the content of water, which has a particularly large effect on the form, when the content of water is 10% by mass or less relative to the total mass of the cleansing cosmetic, the cleansing cosmetic becomes gel-like, and as the water content increases above 10% by mass, the cleansing cosmetic gradually becomes liquid.

[0075] In the cleansing cosmetic of the present invention, components (A) and (B) are blended to ensure the minimum content necessary for emulsifying the cosmetic, thereby minimizing the irritation that can occur when a large amount of surfactant is used, and therefore the cosmetic can be used on sensitive skin. The term "makeup compatibility" refers to the fact that, when the cleansing cosmetic of the present invention is used to cleanse makeup, the cleansing cosmetic of the present invention penetrates into the makeup and dissolves it in the cleansing cosmetic. Therefore, high makeup compatibility can shorten the cleansing time. The term "film-like feeling, protective feeling, and moist feeling after cleansing" refers to the fact that, when the cleansing cosmetic of the present invention is used to cleanse makeup, the film formed by the cleansing cosmetic of the present invention prevents the skin from drying out and protects the skin by leaving oils and grease on the skin, thereby maintaining a moist feeling on the skin. Furthermore, the term "water compatibility" refers to the compatibility of the cleansing cosmetic with makeup blended in with water. In other words, improved water compatibility of the cleansing cosmetic with makeup blended in allows the cleansing cosmetic to be completely removed without remaining on the skin when washed with water.

[0076] The cleansing cosmetic of the present invention can be produced by mixing the respective raw materials and carrying out an emulsification treatment. The emulsification treatment can be carried out using any method and equipment known in the art under appropriately set conditions.

[0077] for example, (1) Dispersing component (A) and a polyhydric alcohol as component (C) to prepare phase D; (2) Component (B) and an oil component as component (C) are added dropwise to phase D and stirred to prepare an O / D emulsion; (3) A cleansing cosmetic product that is an O / D emulsion composition can be produced by adding other ingredients, including water as component (C), to the O / D emulsion and stirring. The temperature during production of the cleansing cosmetic product is not limited, and is, for example, 10°C to 100°C, in one embodiment 20°C to 80°C, in another embodiment 30°C to 70°C, and in another embodiment 40°C to 60°C.

[0078] Here, "oily component" refers to a component that is insoluble in water. Insoluble in water means, for example, that the solubility in water at 25°C is less than 0.1% by mass (less than 1 g / L). As the oily component, for example, any of the above-mentioned components (components (A) to (B) and component (C)) that is insoluble in water can be used, and also components that are generally used as oily components in the field of cosmetics can be used.

[0079] The term "aqueous component" refers to a component that can be dissolved and / or diluted with water, and includes water. Examples of the aqueous component include those components (components (A) to (B) and (C)) that can be dissolved and / or diluted with water, and also include components that are generally used as aqueous components in the field of cosmetics. [Example]

[0080] Hereinafter, several examples of the present invention will be described, but it is not intended that the present invention be limited to those shown in these examples.

[0081] The raw materials used in the examples and comparative examples are as follows.

[0082] Component (A): at least one component selected from surfactin and its salts Surfactin Na (product name: Kaneka Surfactin, manufactured by Kaneka Corporation) Component (B): Surfactants other than component (A) and anionic surfactants PEG-20 glyceryl triisostearate (product name: Brownon SGL-20TISA, manufactured by Aoki Oil & Fat Industries Co., Ltd.), HLB value: 8.0-10.9, calculated molecular weight when the number of moles of ethylene oxide added is 20: 1793 Polyglyceryl-6 laurate (product name: NIKKOL HEXAGLYN 1-L, manufactured by Nikko Chemicals Co., Ltd.), HLB value: 14.1-14.5, calculated molecular weight when the number of moles of glycerin added is 6: 653 Ingredient (C): Other ingredients Oil (Caprylic / Capric Triglyceride (Product Name: NIKKOL SG-TRIESTER F810-1, Nikko Chemicals Co., Ltd.), Calculated Molecular Weight: 409, Viscosity (25°C): 23.7 mPa·s) Polyhydric alcohol (glycerin (product name: Triol VE, manufactured by Kokyu Alcohol Kogyo Co., Ltd.), number of OH groups per molecule: 3) Water (distilled water)

[0083] [Preparation of cleansing cosmetics] (1) First, the polyhydric alcohols of components (A) and (C) were stirred at room temperature (about 25° C.) to obtain the compositions shown in Tables 1 and 2, and homogenized.

[0084] (2) Subsequently, the oils of components (B) and (C) were stirred at room temperature to obtain the compositions shown in Tables 1 and 2, and homogenized.

[0085] (3) The mixture of components (B) and (C) prepared in (2) was added to the mixture of components (A) and (C) prepared in (1), and the mixture was stirred at room temperature to homogenize.

[0086] (4) To the mixture of components (A) to (C) prepared in (3), water (component (C)) was added and the mixture was stirred at room temperature to homogenize, thereby preparing a cleansing cosmetic product that is an O / D type emulsion composition.

[0087] [Evaluation of cleansing cosmetics] (i) Cleanability Lipstick (Shine Compulsion SPK06, Maybelline New York) was applied to the skin plate and allowed to dry for 15 minutes. After drying, the lipstick and cleansing cosmetic were blended together with a finger for 5 seconds. The blended cleansing cosmetic and lipstick were then rinsed with running water for 10 seconds, and the remaining cleansing cosmetic and lipstick were confirmed.

[0088] Scoring criteria 4 points: The cleansing cosmetics or lipstick was completely washed off. 3 points: The cleansing cosmetic or lipstick was almost completely washed off. Here, "almost completely" means that a small amount remains, but is not noticeable. 2 points: Some cleansing cosmetics or lipstick remained. 1 point: Almost all of the cleansing cosmetic or lipstick remained.

[0089] The results are shown in Tables 1 and 2. The numerical values ​​for each component in the tables are the mass percentage (mass %) relative to the total mass of the cleansing cosmetic.

[0090] [Table 1]

[0091] [Table 2]

[0092] The following was found from Tables 1 and 2. It was found that when the content of component (A) was high, makeup blending was impaired, and when the content was low, emulsification was poor. Regarding component (B), it was found that as the content increases, the cleaning power plateaus while the risk of irritation caused by the surfactant increases, and as the content decreases, the cleaning power decreases.

Claims

1. (A) at least one component selected from surfactin and salts thereof: 0.3% by mass to 3% by mass, and (B) Surfactant other than component (A) and anionic surfactant: 1% by mass to 6% by mass (Here, the contents of components (A) and (B) are values ​​relative to the total mass of the cleansing cosmetic.) Including, It is an O / D type emulsion composition. Cleansing cosmetics.

2. 2. The cleansing cosmetic according to claim 1, wherein the surfactin or a salt thereof in component (A) has a structure represented by the following formula (1): 【Chemistry 1】 (In formula (1), X is a residue of an amino acid selected from leucine, isoleucine, and valine, R is an alkyl group having 9 to 18 carbon atoms, and M ＋ are each independently a hydrogen ion, an alkali metal ion, an ammonium ion, or a pyridinium ion.

3. 2. The cleansing cosmetic preparation according to claim 1, wherein component (B) is at least one selected from the group consisting of natural surfactants, nonionic surfactants, cationic surfactants, and amphoteric surfactants.

4. 2. The cleansing cosmetic according to claim 1, wherein the component (B) is one or more selected from nonionic surfactants.

5. 2. The cleansing cosmetic according to claim 1, wherein the molecular weight of component (B) is 500 or more.

6. 2. The cleansing cosmetic preparation according to claim 1, further comprising an oil, the oil being at least one selected from the group consisting of hydrocarbon oils, ester oils, fats and oils, and silicone oils.

7. The cleansing cosmetic according to claim 6, wherein the oil has a molecular weight of 320 or more.

8. 7. The cleansing cosmetic according to claim 6, wherein the viscosity of the oil at 25°C is 15 mPa·s or more.

9. The cleansing cosmetic according to claim 6, wherein the content of the oil is 0.1% by mass to 80% by mass relative to the total mass of the cleansing cosmetic.

10. 2. The cleansing cosmetic preparation according to claim 1, further comprising a polyhydric alcohol, wherein the polyhydric alcohol is one or more selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, isoprene glycol, 1,3-butylene glycol, propanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-octanediol, hexylene glycol, xylitol, sorbitol, maltitol, glycerin, diglycerin, and polyglycerin.

11. The cleansing cosmetic according to claim 10, wherein the content of the polyhydric alcohol is 5% by mass to 90% by mass relative to the total mass of the cleansing cosmetic.

12. The cleansing cosmetic preparation according to any one of claims 1 to 11, further comprising water.

13. The cleansing cosmetic according to claim 12, wherein the water content is 0.1% by mass to 90% by mass relative to the total mass of the cleansing cosmetic.

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