Surfactant composition for cosmetics and cosmetics

Abstract

The purpose of the present invention is to provide a surfactant composition for a cosmetic, the surfactant composition making it possible to obtain a cosmetic that is excellent in bacteriostatic properties and moisture-retaining properties.　The present invention provides a surfactant composition for a cosmetic, the surfactant composition containing an ampholytic surfactant (A) and an ester (B). The ampholytic surfactant (A) contains an ampholytic surfactant (a1) represented by general formula (1), the ester (B) contains an ester (b1) represented by general formula (2), and the weight ratio [(b1) / (a1)] of the ester (b1) with respect to the ampholytic surfactant (a1) is from 0.1 wt% to 10 wt%. The present invention also provides a cosmetic using the surfactant composition for a cosmetic.

Description

[Technical Field]

[0001] The present invention relates to a surfactant composition for cosmetics and a cosmetic. [Background technology]

[0002] Surfactants such as anionic surfactants and amphoteric surfactants are used in cosmetics for human skin and hair, and detergent compositions containing sodium β-dodecylaminopropionate are known as compositions that have excellent bactericidal effects against Escherichia coli, are less irritating to the skin, and can be used in cosmetics such as hair cleansers and facial cleansers (Patent Document 1, etc.).

[0003] However, the bacteriostasis of cosmetics using conventional cleansing compositions has not been sufficient, and the moisturizing properties after use have also not been satisfactory. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2013 / 141118 Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a surfactant composition for cosmetics that can give cosmetics having excellent bacteriostatic and moisturizing properties. [Means for solving the problem]

[0006] The present inventors have conducted extensive research to achieve the above object and have arrived at the present invention. That is, the present invention relates to a cosmetic surfactant composition containing an amphoteric surfactant (A) and an ester (B), wherein the amphoteric surfactant (A) contains an amphoteric surfactant (a1) represented by the following general formula (1), the ester (B) contains an ester (b1) represented by the following general formula (2), and the weight ratio of the ester (b1) to the weight of the amphoteric surfactant (a1) is 0.1% by weight to 10% by weight; and to a cosmetic comprising the cosmetic surfactant composition. [ka] [In the formula, R 1 represents an alkyl or alkenyl group having 6 to 25 carbon atoms, X represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, M1 represents a hydrogen atom, a sodium atom, a potassium atom or triethanolammonium, and n represents 1 or 2.] [ka] [In the formula, R 2 represents an alkyl or alkenyl group having 6 to 25 carbon atoms, and n represents 1 or 2.] [Effects of the Invention]

[0007] Cosmetics using the surfactant composition for cosmetics of the present invention have excellent bacteriostasis and high moisturizing properties for the skin after use. DETAILED DESCRIPTION OF THE INVENTION

[0008] The present invention will be described in detail below. The surfactant composition for cosmetics in this application refers to a surfactant composition used as a raw material for cosmetics. Furthermore, the term "cosmetics" as used herein refers to cleansing agents for hair or skin cleansing (shampoo, pump-foam facial cleanser, cream facial cleanser, facial wash, body soap, solid soap, cleanser, liquid soap, etc.), hair care cosmetics (hair rinse, conditioner, non-cationic conditioner, treatment, hair oil, styling agent, etc.), skin care cosmetics (lotion, cream, hand cream, cleansing oil, lotion, emulsion, all-in-one gel, shaving agent, etc.), makeup cosmetics (foundation, makeup base, powder, lipstick, blusher, eyeliner, eye shadow, eyebrow, mascara, etc.), hair cosmetics (hair wax, hair gel, hair spray, hair colorant, etc.), UV care cosmetics (cream type, gel type, roll-on type, etc.), wipe cosmetics (mask, makeup remover sheet, sweat wipe sheet, hair wipe sheet, etc.), fragrance products, antiperspirant, etc. In this specification, the names of compounds may be written using the display names or alternative display names listed in the "List of Cosmetic Ingredient Display Names" compiled by the Japan Cosmetic Industry Association.

[0009] <Amphoteric surfactant (a1)> The amphoteric surfactant (A) contained in the surfactant composition for cosmetics, which is the first invention of the present application, contains an amphoteric surfactant (a1) represented by general formula (1).

[0010] [ka]

[0011] In general formula (1), R 1 represents an alkyl or alkenyl group having 6 to 25 carbon atoms. Examples of the alkyl group having 6 to 25 carbon atoms include an n-hexyl group, an n-heptyl group, an n-octyl group, an isooctyl group, a 2-ethylhexyl group, an n-nonyl group, an isononyl group, an n-decyl group, an isodecyl group, an undecyl group, an n-dodecyl group, an isododecyl group, an n-tridecyl group, an isotridecyl group, an n-tetradecyl group, an isotetradecyl group, an n-hexadecyl group, an isohexadecyl group, an n-stearyl group, an isostearyl group, an n-nonadecyl group, an n-icosyl group, and an n-tetracosyl group. Examples of the alkenyl group having 6 to 25 carbon atoms include an n-hexenyl group, an n-heptenyl group, an n-octenyl group, an n-decenyl group, an isodecenyl group, an n-undecenyl group, an n-dodecenyl group, an n-tetradecenyl group, an isohexadecenyl group, an n-octadecenyl group, and an n-octadecadienyl group. R 1 Among these, from the viewpoint of the bacteriostasis of the cosmetic, preferred are alkyl groups having 6 to 20 carbon atoms or alkenyl groups having 6 to 20 carbon atoms, and more preferred are alkyl groups having 8 to 18 carbon atoms or alkenyl groups having 8 to 18 carbon atoms.

[0012] In the general formula (1), X represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms. Examples of the alkyl group having 1 to 3 carbon atoms include a methyl group, an ethyl group, and a propyl group. Of X, from the viewpoint of the bacteriostasis of a cosmetic containing the surfactant composition for cosmetics, a hydrogen atom or a methyl group is preferred, and a hydrogen atom is more preferred.

[0013] In the general formula (1), M1 is a hydrogen atom, a sodium atom, a potassium atom, or triethanolammonium. Of M1, from the viewpoint of the bacteriostasis of a cosmetic containing the surfactant composition for cosmetics, a sodium atom or triethanolammonium is preferred, and a sodium atom is more preferred.

[0014] In the general formula (1), n ​​represents 1 or 2. n is preferably 2 from the viewpoint of the bacteriostasis of a cosmetic containing the surfactant composition for cosmetics of the present invention.

[0015] Specific examples of the amphoteric surfactant (a1) represented by the general formula (1) include sodium β-hexylaminopropionate, sodium β-heptylaminopropionate, sodium β-octylaminopropionate, sodium β-isooctylaminopropionate, sodium β-2-ethylhexylaminopropionate, sodium β-nonylaminopropionate, sodium β-isononylaminopropionate, sodium β-decylaminopropionate, sodium β-isodecylaminopropionate, sodium β-undecylaminopropionate, Sodium β-dodecylaminopropionate, potassium β-dodecylaminopropionate, triethanolammonium β-dodecylaminopropionate, sodium β-coconut oil fatty acid aminopropionate (coconut oil fatty acid refers to fatty acids obtained from coconut oil, and is a mixed fatty acid whose main component is a fatty acid with a distribution of 8 to 18 carbon atoms), triethanolammonium β-coconut oil fatty acid aminopropionate, sodium β-isododecylaminopropionate, sodium β-tridecylaminopropionate, sodium β-tetradecylaminopropionate ammonium, sodium β-pentadecylaminopropionate, sodium β-isopentadecylaminopropionate, sodium β-isotetradecylaminopropionate, sodium β-hexadecylaminopropionate, sodium β-isohexadecylaminopropionate, sodium β-stearylaminopropionate, sodium β-isostearylaminopropionate, sodium β-nonadecylaminopropionate, sodium β-icosylaminopropionate, sodium β-tetracosylaminopropionate, sodium β-hexenylaminopropionate Examples of suitable amino acids include sodium β-heptenylaminopropionate, sodium β-octenylaminopropionate, sodium β-decenylaminopropionate, sodium β-isodecenylaminopropionate, sodium β-undecenylaminopropionate, sodium β-dodecenylaminopropionate, sodium β-tetradodecenylaminopropionate, sodium β-isohexadecenylaminopropionate, sodium β-octadecenylaminopropionate, and sodium β-octadecadienylaminopropionate. These may be used alone or in combination of two or more.

[0016] As the amphoteric surfactant (a1) represented by general formula (1), from the viewpoint of the bacteriostasis of a cosmetic containing the cosmetic surfactant composition, sodium β-dodecylaminopropionate, potassium β-dodecylaminopropionate, and triethanolammonium β-dodecylaminopropionate are preferred, and sodium β-dodecylaminopropionate is more preferred. Furthermore, since they contain sodium β-dodecylaminopropionate, potassium β-dodecylaminopropionate, and triethanolammonium β-dodecylaminopropionate as constituent components, sodium β-coconut oil fatty acid aminopropionate, potassium β-coconut oil fatty acid aminopropionate, and triethanolammonium β-coconut oil fatty acid aminopropionate are also preferred, with sodium β-coconut oil fatty acid aminopropionate being more preferred.

[0017] The amphoteric surfactant (a1) represented by general formula (1) can be obtained by a known method described in, for example, JP 2008-162914 A, for example, by subjecting 1 mole of methyl acrylate to Michael addition to 1 mole of a primary amine having 6 to 25 carbon atoms to obtain a Michael adduct, and then hydrolyzing the Michael adduct with an alkaline compound such as sodium hydroxide. For example, 1.17 moles of methyl acrylate is added dropwise to 1 mole of a primary amine having 6 to 25 carbon atoms, preferably at 50 to 150°C (more preferably 70 to 100°C), to carry out a Michael addition reaction, and then the reaction mixture is hydrolyzed with an alkaline compound such as sodium hydroxide, thereby obtaining the amphoteric surfactant (a1).

[0018] <Ester (b1)> The ester (B) contained in the surfactant composition for cosmetics, which is the first invention of the present application, contains an ester (b1) represented by general formula (2). By including the ester (b1) represented by general formula (2), the cosmetic containing the surfactant composition for cosmetics of the present invention has good bacteriostasis and moisturizing properties after use.

[0019] [ka]

[0020] In general formula (2), R 2 represents an alkyl group or an alkenyl group having 6 to 25 carbon atoms, and specifically, R 1 It is similar to the one mentioned above. R 2 Among these, from the viewpoint of the bacteriostasis of a cosmetic containing the surfactant composition for cosmetics of the present invention, an alkyl group having 6 to 20 carbon atoms or an alkenyl group having 6 to 20 carbon atoms is preferred, and an alkyl group having 8 to 18 carbon atoms or an alkenyl group having 8 to 18 carbon atoms is more preferred.

[0021] Specific examples of the ester (b1) represented by the general formula (2) in the present invention include methyl β-hexylaminopropionate, methyl β-heptylaminopropionate, methyl β-octylaminopropionate, methyl β-isooctylaminopropionate, methyl β-2-ethylhexylaminopropionate, methyl β-nonylaminopropionate, methyl β-isononylaminopropionate, methyl β-decylaminopropionate, methyl β-isodecylaminopropionate, methyl β-undecylaminopropionate, methyl β-dodecylaminopropionate, methyl β-coconut oil fatty acid aminopropionate, methyl β-isododecylaminopropionate, methyl β-tridecylaminopropionate, methyl β-tetradecylaminopropionate, methyl β-pentadecylaminopropionate, methyl β-isopentadecylaminopropionate, methyl β-isotetradecylaminopropionate, Methyl β-hexadecylaminopropionate, methyl β-isohexadecylaminopropionate, methyl β-stearylaminopropionate, methyl β-isostearylaminopropionate, methyl β-nonadecylaminopropionate, methyl β-icosylaminopropionate, methyl β-tetracosylaminopropionate, methyl β-hexenylaminopropionate, methyl β-heptenylaminopropionate, methyl β-octylaminopropionate, Examples include methyl ctenylaminopropionate, methyl β-decenylaminopropionate, methyl β-isodecenylaminopropionate, methyl β-undecenylaminopropionate, methyl β-dodecenylaminopropionate, methyl β-tetradodecenylaminopropionate, methyl β-isohexadecenylaminopropionate, methyl β-octadecenylaminopropionate, and methyl β-octadecadienylaminopropionate. These may be used alone or in combination of two or more.

[0022] The ester (b1) represented by the general formula (2) is preferably methyl β-dodecylaminopropionate from the viewpoint of the bacteriostasis of the cosmetic containing the surfactant composition for cosmetics. Furthermore, methyl β-coconut oil fatty acid aminopropionate can also be preferably used because it contains methyl β-dodecylaminopropionate as a constituent component.

[0023] The ester (b1) represented by the general formula (2) can be obtained by a known method described in, for example, JP 2008-162914 A, specifically, by subjecting 1 mole of methyl acrylate to Michael addition with 1 mole of a primary amine having 6 to 25 carbon atoms. For example, 1.17 moles of methyl acrylate is added dropwise to 1 mole of alkylamine at a temperature preferably between 50 and 150°C (more preferably between 70 and 100°C) to carry out a Michael addition reaction, thereby obtaining the ester (b1). Furthermore, by controlling the reaction rate by adjusting the reaction conditions (reaction temperature, reaction time, etc.) for hydrolysis of the Michael adduct, which is carried out when synthesizing the amphoteric surfactant (a1) represented by general formula (1), it is also possible to obtain a mixture of the amphoteric surfactant (a1) and the ester (b1).

[0024] <Amphoteric surfactant (a2)> The amphoteric surfactant (A) contained in the surfactant composition for cosmetics, which is the first invention of the present application, may further contain an amphoteric surfactant (a2) represented by general formula (3).

[0025] [ka]

[0026] In general formula (3), R 3 represents an alkyl group or an alkenyl group having 6 to 25 carbon atoms, and specifically, R 1 The same as those listed in the above formula (1) can be mentioned, and the preferred ones are also the same as those in the formula (1).

[0027] In the general formula (3), M2 and M3 each independently represent a hydrogen atom, a sodium atom, a potassium atom, or triethanolammonium. M2 is preferably a sodium atom or triethanolammonium, more preferably a sodium atom. Of M3, a sodium atom or triethanolammonium is preferred, and a sodium atom is more preferred.

[0028] In the general formula (3), m represents 1 or 2, and k represents 1 or 2. m is preferably 2. k is preferably 2.

[0029] Specific examples of the amphoteric surfactant (a2) represented by the general formula (3) include sodium β-hexyliminodipropionate, sodium β-heptyliminodipropionate, sodium β-octyliminodipropionate, sodium β-isooctyliminodipropionate, sodium β-2-ethylhexyliminodipropionate, sodium β-nonyliminodipropionate, sodium β-isononyliminodipropionate, sodium β-decyliminodipropionate, sodium β-isodecyliminodipropionate, and sodium β-undecyliminodipropionate. Sodium β-dodecyliminodipropionate, sodium β-dodecyliminodipropionate, potassium β-dodecyliminodipropionate, triethanolammonium β-dodecyliminodipropionate, sodium β-coconut oil fatty acid iminodipropionate, triethanolammonium β-coconut oil fatty acid iminodipropionate, sodium β-isododecyliminodipropionate, sodium β-tridecyliminodipropionate, sodium β-tetradecyliminodipropionate, sodium β-isopentadecyliminodipropionate, sodium β-isododecyliminodipropionate Sodium pentadecyliminodipropionate, sodium β-isotetradecyliminodipropionate, sodium β-hexadecyliminodipropionate, sodium β-isohexadecyliminodipropionate, sodium β-stearyliminodipropionate, sodium β-isostearyliminodipropionate, sodium β-nonadecyliminodipropionate, sodium β-icosyliminodipropionate, sodium β-tetracosyliminodipropionate, sodium β-hexenyliminodipropionate, sodium β-heptenyliminodipropionate Examples of the iminodipropionate include sodium β-octenyliminodipropionate, sodium β-decenyliminodipropionate, sodium β-isodecenyliminodipropionate, sodium β-undecenyliminodipropionate, sodium β-dodecenyliminodipropionate, sodium β-tetradodecenyliminodipropionate, sodium β-isohexadecenyliminodipropionate, sodium β-octadecenyliminodipropionate and sodium β-octadecadienyliminodipropionate. These may be used alone or in combination of two or more.

[0030] The amphoteric surfactant (a2) represented by general formula (3) can be obtained by, for example, subjecting 1 mole of a primary amine having 6 to 25 carbon atoms to a Michael reaction with 2 moles of methyl acrylate to obtain a Michael adduct, and then hydrolyzing the Michael adduct with an alkaline compound such as sodium hydroxide. For example, 2.5 moles of methyl acrylate are added dropwise to 1 mole of a primary amine having 6 to 25 carbon atoms at a temperature of preferably 50 to 150°C (more preferably 70 to 100°C) to carry out a Michael addition reaction, followed by hydrolysis with an alkaline compound to obtain the amphoteric surfactant (a2). Furthermore, during the production of the amphoteric surfactant (a1) represented by general formula (1), a side reaction occurs in which 2 moles of methyl acrylate are added to 1 mole of a primary amine having 6 to 25 carbon atoms, and the reaction product is hydrolyzed, so that the amphoteric surfactant (a2) is obtained simultaneously with the amphoteric surfactant (a1).

[0031] <Ester (b2)> The ester (B) contained in the surfactant composition for cosmetics according to the first invention of the present application may further contain an ester (b2) represented by the following general formula (4).

[0032] [ka]

[0033] In general formula (4), R 4 represents an alkyl group or an alkenyl group having 6 to 25 carbon atoms, and specifically, R 1 The same things as those listed in 1. can be mentioned, and the preferred things are also the same.

[0034] In the general formula (4), m represents 1 or 2, and k represents 1 or 2. m is preferably 2. k is preferably 2.

[0035] Specific examples of the ester (b2) represented by the general formula (4) in the present invention include methyl β-hexyliminodipropionate, methyl β-heptyliminodipropionate, methyl β-octyliminodipropionate, methyl β-isooctyliminodipropionate, methyl β-2-ethylhexyliminodipropionate, methyl β-nonyliminodipropionate, methyl β-isononyliminodipropionate, methyl β-decyliminodipropionate, methyl β-iso ... Methyl iminodipropionate, methyl β-undecyliminodipropionate, methyl β-dodecyliminodipropionate, methyl β-coconut oil iminodipropionate, methyl β-isododecyliminodipropionate, methyl β-tridecyliminodipropionate, methyl β-tetradecyliminodipropionate, methyl β-isopentadecyliminodipropionate, methyl β-isopentadecyliminodipropionate, methyl β-isotetradecyliminodipropionate Methyl β-hexadecyliminodipropionate, methyl β-isohexadecyliminodipropionate, methyl β-stearyliminodipropionate, methyl β-isostearyliminodipropionate, methyl β-nonadecyliminodipropionate, methyl β-icosyliminodipropionate, methyl β-tetracosyliminodipropionate, methyl β-hexenyliminodipropionate, methyl β-heptenyliminodipropionate, methyl β-octyliminodipropionate Examples thereof include methyl thenyliminodipropionate, methyl β-decenyliminodipropionate, methyl β-isodecenyliminodipropionate, methyl β-undecenyliminodipropionate, methyl β-dodecenyliminodipropionate, methyl β-tetradodecenyliminodipropionate, methyl β-isohexadecenyliminodipropionate, methyl β-octadecenyliminodipropionate, and methyl β-octadecadienyliminodipropionate. These may be used alone or in combination of two or more.

[0036] The ester (b2) represented by the general formula (4) can be obtained by mixing 2 moles of methyl acrylate with 1 mole of a primary amine having 6 to 25 carbon atoms and subjecting them to Michael addition, for example. For example, 2.5 moles of methyl acrylate are added dropwise to 1 mole of a primary amine having 6 to 25 carbon atoms at preferably 50 to 150°C (more preferably 70 to 100°C) to carry out a Michael addition reaction, thereby obtaining the ester (b2). Furthermore, when producing the amphoteric surfactant (a1) represented by general formula (1), a reaction occurs in which 2 moles of methyl acrylate are added to 1 mole of a primary amine having 6 to 25 carbon atoms, and the reaction product remains without being hydrolyzed, so that the ester (b2) can be obtained simultaneously with the amphoteric surfactant (a1).

[0037] <Surfactant composition for cosmetics> The weight ratio of the ester (b1) to the weight of the amphoteric surfactant (a1) in the cosmetic surfactant composition of the present invention (hereinafter sometimes abbreviated as [(b1) / (a1)]) is 0.1% by weight to 10% by weight, preferably 0.3% by weight to 9% by weight, and more preferably 0.4% by weight to 8% by weight, from the viewpoint of suppressing cloudiness and separation of the cosmetic surfactant composition over time, and from the viewpoint of the moisturizing properties and bacteriostasis of cosmetics containing the cosmetic surfactant composition. If [(b1) / (a1)] is less than 0.1% by weight, the moisturizing properties and bacteriostasis of the cosmetic preparation containing the surfactant composition for cosmetics will be insufficient, and if [(b1) / (a1)] is more than 10% by weight, the surfactant composition for cosmetics will become cloudy or separate over time, making it difficult to stably produce a cosmetic preparation with a homogeneous composition.

[0038] The cosmetic surfactant composition of the present invention can be obtained by mixing the amphoteric surfactant (a1) and the ester (b1) produced by the above-mentioned methods so that the weight ratio of the ester (b1) to the weight of the amphoteric surfactant (a1) falls within the above-mentioned range. Alternatively, the reaction rate may be controlled by adjusting the reaction conditions (such as the reaction temperature and reaction time) of the hydrolysis carried out when synthesizing the amphoteric surfactant (a1), thereby producing a mixture in which the weight ratio of the ester (b1) to the weight of the amphoteric surfactant (a1) falls within the above range.

[0039] The weight of the ester (b1) contained in the surfactant composition for cosmetics can be measured by the following quantitative analysis method using gas chromatography (hereinafter referred to as GC).

[0040] <Quantitative analysis method of ester (b1) by GC> First, three calibration curve samples containing n-decane as an internal standard and ester (b1) as a substance to be quantified (ethanol solutions containing ester (b1) at concentrations of 2.0, 1.0, and 0.5 wt %, respectively, and n-decane at a concentration of 1.0 wt %) were prepared, and analyzed by GC under the following measurement conditions. Next, the GC analysis results are plotted on a graph in which the horizontal axis represents the weight ratio of ester (b1) to the weight of n-decane [(weight of ester (b1)) / (weight of n-decane)] and the vertical axis represents the peak area ratio of ester (b1) to the peak area of ​​n-decane [(peak area of ​​ester (b1)) / (peak area of ​​n-decane)], and a calibration curve is created by the least squares method. The peaks of n-decane and ester (b1) in the GC chart can be distinguished by their retention times. Under the GC measurement conditions below, the peak of n-decane appears at a retention time of approximately 3.3 seconds, and the peak of ester (b1) appears at a retention time of approximately 15.5 seconds. Next, 2.0 g of an ethanol solution containing 1% by weight of n-decane was added to a weighed sample taken from the cosmetic surfactant composition, and then 50 mL of ethanol was added to prepare a sample solution, which was then analyzed by GC under the following measurement conditions. Calculate the ratio of the peak area of ester (b1) to the peak area of n-decane [(peak area of ester (b1)) / (peak area of n-decane)] from the GC spectrum obtained by analysis, and use K, which is the slope of the calibration curve described above, to calculate the content of ester (b1) contained in the sample sampled from the surfactant composition for cosmetics according to the following calculation formula (1). Content of ester (b1) (wt%) = (K × T × 2.0) / S (1) In calculation formula (1), K is the slope of the calibration curve, T is [(peak area of ester (b1)) / (peak area of n-decane)], and S is the weight (g) of the sample sampled from the surfactant composition for cosmetics to prepare the sample solution.

[0041] <GC measurement conditions> Apparatus: GC-9A (manufactured by Shimadzu Corporation) Detector: FID GC packed column: SE-30 (dimethylpolysiloxane content 5 wt%, inner diameter 3.2 mm, length 2.1 m, manufactured by GL Sciences Inc.) Column temperature: Temperature increase from 80°C to 280°C (heating rate: 10°C / min) Sample injection volume: 5 μL

[0042] The weight of the amphoteric surfactant (a1) contained in the surfactant composition for cosmetics can be measured by subjecting the amphoteric surfactant (a1) to methyl esterification to convert it to ester (b1) by the method described below, quantifying the ester (b1) contained in the solution after the methyl esterification treatment by GC, and calculating the difference from the content of ester (b1) contained in the surfactant composition for cosmetics described above. When the surfactant composition for cosmetics containing the amphoteric surfactant (a1) and ester (b1) is subjected to a methyl esterification treatment, the solution after the methyl esterification treatment will contain both the ester (b1) that was contained before the methyl esterification treatment and the ester (b1) synthesized by the methyl esterification of the amphoteric surfactant (a1). The number of moles of ester (b1) contained in the solution after the methyl esterification treatment is equal to the total number of moles of ester (b1) and amphoteric surfactant (a1) contained in the methyl esterification-treated cosmetic surfactant composition. Therefore, by converting the weight of the ester (b1) contained in the solution after the methyl esterification treatment into the number of moles, the total number of moles of the ester (b1) and the amphoteric surfactant (a1) contained in the cosmetic surfactant composition used in the methyl esterification treatment can be calculated. The number of moles of the ester (b1) contained before the methyl esterification treatment is subtracted from this total number of moles, and this is converted into the weight of the amphoteric surfactant (a1) based on the molecular weight of the amphoteric surfactant (a1), allowing the content of the amphoteric surfactant (a1) contained in the cosmetic surfactant composition used in the methyl esterification treatment to be calculated.

[0043] <Quantitative analysis method of amphoteric surfactant (a1) by GC> (1) Hydrochloric acid (35% by weight aqueous solution, manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.) is added to a cosmetic surfactant composition (80 g) to adjust the pH to 2, and 20 g of petroleum ether (manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd.) is further added and mixed to extract the amphoteric surfactant (a1) and ester (b1) contained in the cosmetic surfactant composition into petroleum ether. The aqueous and oil layers were then separated using a 200 mL separatory funnel, and the oil layer was removed. Using a rotary evaporator (rotation speed: 50 rpm / min), the oil layer was decompressed at 0.09 MPa in a 60 °C water bath for 3 hours to remove the petroleum ether contained in the oil layer. The weight of the residue (a mixture of amphoteric surfactant (a1) and ester (b1)) after the petroleum ether removal was recorded, and a sample (0.03 g) was sampled from the residue, to which N,N-dimethylformamide dimethyl acetal (1 g) was added. The mixture was then heated at 60 °C for 15 minutes to carry out the methyl esterification of the amphoteric surfactant (a1) contained in the residue. The resulting reaction mixture (a reaction mixture containing ester (b1)) was analyzed in the same manner as in the quantitative analysis of ester (b1) by GC, except that the sample was replaced with the sample used in the quantitative analysis of ester (b1) by GC described above. The content of ester (b1) in the reaction mixture obtained by the methyl esterification process was measured.

[0044] (2) The total number of moles of the amphoteric surfactant (a1) and the ester (b1) contained in 80 g of the cosmetic surfactant composition is calculated from the GC analysis results of the reaction mixture obtained in the methyl esterification treatment [the content of the ester (b1) contained in the reaction mixture] and the weight of the residue extracted with petroleum ether from 80 g of the cosmetic surfactant composition.

[0045] (3) The number of moles of the amphoteric surfactant (a1) contained in 80 g of the cosmetic surfactant composition is calculated by subtracting the number of moles of the ester (b1) contained in 80 g of the cosmetic surfactant composition from the total number of moles of the amphoteric surfactant (a1) and the ester (b1) contained in 80 g of the cosmetic surfactant composition.

[0046] (4) The number of moles of the amphoteric surfactant (a1) contained in 80 g of the cosmetic surfactant composition is converted into the weight of the amphoteric surfactant (a1) based on the molecular weight of the amphoteric surfactant (a1), and this is taken as the content of the amphoteric surfactant (a1) contained in 80 g of the cosmetic surfactant composition before the methyl esterification treatment.

[0047] The content of the amphoteric surfactant (a1) in the cosmetic surfactant composition is preferably 0.10 to 5.0 wt %, more preferably 0.55 to 4.04 wt %, based on the total weight of the cosmetic surfactant composition. The content of the ester (b1) in the cosmetic surfactant composition is preferably 0.001 to 0.50 wt %, more preferably 0.002 to 0.13 wt %, based on the total weight of the cosmetic surfactant composition.

[0048] The surfactant composition for cosmetics according to the first invention of the present application may contain any other component, and it is preferable that it contains water.

[0049] When the cosmetic surfactant composition of the present invention contains water, the content of water is preferably 10 to 90 wt %, more preferably 20 to 80 wt %, based on the total weight of the cosmetic surfactant composition. The water contained in the cosmetic surfactant composition may contain the water used as a reaction solvent in synthesizing the amphoteric surfactant (a1) and the ester (b1) as is, or may be mixed with the amphoteric surfactant (a1) and the ester (b1) to achieve a predetermined weight ratio using tap water, purified water, hard water, soft water, natural water, deep-sea water, hot spring water, electrolytic alkaline ionized water, electrolytic acidic ionized water, ion-exchanged water, cluster water, or the like.

[0050] The cosmetic surfactant composition of the present invention can be obtained by mixing the amphoteric surfactant (a1), the ester (b1), and optionally water and other components in a predetermined ratio using a known mixer equipped with a stirring device such as a paddle-type stirring blade or a spiral stirring blade. Alternatively, the cosmetic surfactant composition can also be obtained by mixing a mixture containing the amphoteric surfactant (a1) and the ester (b1) in a predetermined ratio with optionally water and other components in a predetermined ratio.

[0051] The surfactant composition for cosmetics of the present invention may contain some or all of the ingredients contained in cosmetics, such as amphoteric surfactants other than the amphoteric surfactant (A), anionic surfactants, cationic surfactants, nonionic surfactants, water, pH adjusters, solvents, conditioning agents, oils, cooling agents, moisturizers, antioxidants, chelating agents, thickeners, fragrances, colorants, preservatives, UV protection agents, and whitening agents. The surfactant composition for cosmetics may also contain unreacted materials and residues of reaction catalysts that remain after synthesizing the amphoteric surfactant (a1) and the ester (b1).

[0052] <Cosmetics> The cosmetic of the second invention of the present application is the above-mentioned first invention of the present application, and is a cosmetic containing a surfactant composition for cosmetics containing an amphoteric surfactant (a1) and an ester (b1) in a specified ratio.

[0053] The weight proportion of the surfactant composition for cosmetics contained in the cosmetic of the present invention can be adjusted as appropriate depending on the formulation and intended use of the cosmetic, and is, for example, preferably 1 to 20% by weight when the cosmetic is a cleanser, preferably 2 to 15% by weight when the cosmetic is a skin care cosmetic, preferably 2 to 7% by weight when the cosmetic is a hair care cosmetic, preferably 2 to 7% by weight when the cosmetic is a UV care cosmetic, and preferably 2 to 15% by weight when the cosmetic is a wipe-off cosmetic. Within these ranges, the cosmetic will have good bacteriostasis and moisturizing properties.

[0054] The cosmetic of the present invention may contain, in addition to the cosmetic surfactant composition described above, another component (C). Examples of the other component (C) include known cosmetic raw material components used as cosmetic raw materials, such as amphoteric surfactants other than the amphoteric surfactant (A), anionic surfactants, cationic surfactants, nonionic surfactants, water, pH adjusters, solvents, conditioning agents, oils, cooling agents, moisturizers, antioxidants, chelating agents, thickeners, fragrances, colorants, preservatives, UV protection agents, and whitening agents.

[0055] Examples of the anionic surfactant include ether carboxylic acids or salts thereof, sulfate ester salts, sulfonate salts, phosphate ester salts, fatty acid salts, and acylated amino acid salts.

[0056] Examples of ether carboxylic acids or salts thereof include polyoxyethylene (degree of polymerization 4) lauryl ether acetic acid, polyoxyethylene (degree of polymerization 6) lauryl ether acetic acid, polyoxyethylene (degree of polymerization 4) tridecyl ether acetic acid, polyoxyethylene (degree of polymerization 7) tridecyl ether acetic acid, and lauryl glycol carboxylic acid (such as lauryl glycol acetate), polyoxyethylene (degree of polymerization 4) sodium lauryl ether acetate, polyoxyethylene (degree of polymerization 6) sodium lauryl ether acetate, polyoxyethylene (degree of polymerization 4) sodium tridecyl ether acetate, polyoxyethylene (degree of polymerization 7) sodium tridecyl ether acetate, and sodium lauryl glycol carboxylic acid (such as sodium lauryl glycol acetate).

[0057] Examples of sulfate salts include sodium lauryl sulfate, polyoxyethylene (degree of polymerization 2 to 4) lauryl ether sulfates (polyoxyethylene (degree of polymerization 2 to 4) sodium lauryl ether sulfate, polyoxyethylene (degree of polymerization 2 to 4) lauryl ether sulfate triethanolamine, etc.), polyoxyethylene (degree of polymerization 3) coconut oil fatty acid monoethanolamide sodium sulfate, and polyoxyethylene (degree of polymerization 3) alkyl (number of carbon atoms 12 to 13) ether sodium sulfate.

[0058] Examples of sulfonates include olefin (carbon number 14 to 16) sodium sulfonate, sodium dodecylbenzenesulfonate, polyoxyethylene (degree of polymerization 2) lauryl sulfosuccinate disodium salt, lauryl sulfosuccinate disodium salt, and polyoxyethylene (degree of polymerization 5) lauroylethanolamide sulfosuccinate disodium salt.

[0059] Examples of the phosphate ester salt include sodium lauryl phosphate and polyoxyethylene (degree of polymerization 10) sodium lauryl ether phosphate.

[0060] Examples of fatty acid salts include sodium myristate, potassium myristate, triethanolamine myristate, salts of lauric acid (sodium laurate, potassium laurate, triethanolamine laurate, etc.), salts of stearic acid (sodium stearate, potassium stearate, triethanolamine stearate, etc.), salts of palmitic acid (sodium palmitate, potassium palmitate, triethanolamine palmitate, etc.), and salts of isostearic acid (sodium isostearate, potassium isostearate, triethanolamine isostearate, etc.).

[0061] Examples of acylated amino acid salts include sodium N-coconut fatty acid methyl taurate, sodium N-coconut fatty acid sarcosine, sodium N-lauroyl sarcosine, triethanolamine N-coconut fatty acid acyl-L-glutamate, sodium N-coconut fatty acid acyl-L-glutamate (sometimes called sodium cocoyl glutamate), potassium coconut fatty acid glycine, triethanolamine lauroyl-L-glutamate, and sodium N-lauroyl methylalanine.

[0062] Examples of amphoteric surfactants other than the amphoteric surfactant (A) include alkyldimethylacetic acid betaine, fatty acid amidopropyl betaine, alkylimidazolinium betaine, and sulfobetaine-type amphoteric surfactants.

[0063] Examples of alkyldimethylacetic acid betaines include lauryldimethylaminoacetic acid betaine, myristyldimethylaminoacetic acid betaine, and stearyldimethylaminoacetic acid betaine.

[0064] Fatty acid amidopropyl betaines include lauric acid amidopropyl betaine, myristic acid amidopropyl betaine, isostearic acid amidopropyl betaine, and cocamidopropyl betaine.

[0065] Examples of alkylimidazolinium betaines include sodium lauroamphoacetate (N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium), 2-coconut oil fatty acid-N-hydroxyethyl-N-hydroxyethylimidazolinium betaine, and sodium cocoamphoacetate (2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine).

[0066] Examples of sulfobetaine-type amphoteric surfactants include lauramidopropyl hydroxysultaine and cocamidopropyl hydroxysultaine.

[0067] Cationic surfactants include quaternary ammonium salts and amine salts.

[0068] Examples of quaternary ammonium salts include stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, distearyldimethylammonium chloride, lanolin fatty acid aminopropylethyldimethylammonium ethyl sulfate, and behentrimonium chloride.

[0069] Examples of the amine salt include stearic acid diethylaminoethylamide lactate and behenic acid dimethylaminoethylamide lactate.

[0070] Examples of nonionic surfactants include polypropylene glycol (PPG-34, etc.), alkylene oxide (2 to 8 carbon atoms) adducts of alcohols having 4 to 24 carbon atoms, esters or ethers of fatty acids having 8 to 24 carbon atoms and alcohols or alkylene oxide (2 to 8 carbon atoms) polymers, alkylene oxide adducts of higher fatty acid esters of polyhydric (dihydric to decahydric) alcohols, polyglycerin fatty acid esters, and fatty acid alkanolamides.

[0071] Examples of alkylene oxide (having 2 to 8 carbon atoms) adducts of alcohols having 4 to 24 carbon atoms include PPG-7 buteth-10 (polyoxyethylene (degree of polymerization 10) polyoxypropylene (degree of polymerization 7) butyl ether), laureth-7 (polyoxyethylene (degree of polymerization 7) lauryl ether), laureth-20 (polyoxyethylene (degree of polymerization 20) lauryl ether), oleth-20 (polyoxyethylene (degree of polymerization 20) oleyl ether), PPG-2 ceteth-12 (polyoxyethylene (degree of polymerization 12) polyoxypropylene (degree of polymerization 2) cetyl ether), and ceteth-5 (a mixture of polyoxyethylene (degree of polymerization 5) cetearyl ether and polyoxyethylene (degree of polymerization 5) oleyl ether).

[0072] Examples of the esters or ethers of fatty acids having 8 to 24 carbon atoms with alcohols or alkylene oxide (having 2 to 8 carbon atoms) polymers include glyceryl stearate, ethylene glycol stearate, sorbitan laurate, sorbitan palmitate, sorbitan stearate, sorbitan oleate, sorbitan coconut oil fatty acid, PEG-9 oleate, steareth-20, PEG-23 stearate, PEG-3 distearate, PEG-150 distearate, PEG-190 distearate, and PEG-60 hydrogenated castor oil.

[0073] Examples of alkylene oxide adducts of higher fatty acid esters of polyhydric (dihydric to decahydric) alcohols include (caprylic / capric) PEG-6 glycerides [addition polymerization of polyethylene oxide (degree of polymerization 6) to glycerin esters of caprylic and capric acids], PEG-10 sorbitan laurate, PEG-80 sorbitan laurate, PEG-6 sorbitan oleate, PEG-3 sorbitan oleate, PEG-40 sorbitan oleate, PEG-6 sorbitan stearate, PEG-40 sorbitan stearate, PEG-160 sorbitan triisostearate, and PEG-120 methyl glucose dioleate.

[0074] Examples of polyglycerin fatty acid esters include decaglyceryl monooleate, decaglyceryl monolaurate, and decaglyceryl isostearate.

[0075] Examples of fatty acid alkanolamides include coconut oil fatty acid monoethanolamide, coconut oil fatty acid N-methylethanolamide, coconut oil fatty acid diethanolamide, lauric acid diethanolamide, lauric acid myristic acid diethanolamide, and stearic acid diethanolamide.

[0076] Examples of water include tap water, purified water, hard water, soft water, natural water, deep sea water, hot spring water, electrolytic alkaline ionized water, electrolytic acidic ionized water, ion-exchanged water, and cluster water.

[0077] Examples of pH adjusters include lactic acid, citric acid, phosphoric acid, malic acid, tartaric acid, hydrochloric acid, acetic acid, sodium hydroxide, potassium hydroxide, triethanolamine, and salts thereof. The cosmetic of the present invention can be made highly stable in storage (less likely to separate or become cloudy over time) by adjusting the pH to about 4 to 11 using a pH adjuster.

[0078] Examples of the solvent include ethanol, isoprene diol, denatured alcohol, dipropylene glycol, 1,2-hexanediol, isododecane, isopropanol, butyl acetate, ethoxydiglycol, and propylene glycol.

[0079] Conditioning agents include polyquaternium-10 (a polymer of a quaternary ammonium salt obtained by adding glycidyltrimethylammonium chloride to hydroxyethyl cellulose), polyquaternium-7 (a polymer of a quaternary ammonium salt obtained from acrylic acid amide and dimethyldiallylammonium chloride), polyquaternium-22 (a copolymer of dimethyldiallylammonium chloride and acrylic acid), (VP / VA) copolymer (a copolymer of vinyl acetate and vinylpyrrolidone), guar hydroxypropyltrimonium chloride (a quaternary ammonium salt obtained by adding glycidyltrimethylammonium chloride to guar gum), PEG-34, PEG-400, sodium polyacrylate, hydroxyethyl cellulose, and panthenol.

[0080] Examples of oils include liquid oils, solid oils, hydrocarbon oils, synthetic ester oils, silicone oils, and essential oils.

[0081] Examples of liquid oils and fats include mineral oil, avocado oil, camellia oil, turtle oil, macadamia seed 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, soybean oil, peanut oil, tea seed oil, Japanese cypress oil, rice bran oil, jojoba oil, rice germ oil, triethylhexanoin, and triisopalmitin.

[0082] Examples of solid fats and oils include cacao butter, coconut oil, candelilla wax, beeswax, shea butter, horse oil, hydrogenated coconut oil, palm oil, beef tallow, lanolin, hydrogenated beef tallow, palm kernel oil, hydrogenated palm oil, lard, Japan wax, and hydrogenated castor oil.

[0083] Examples of hydrocarbon oils include isododecane, isohexadecane, squalane, squalene, petrolatum, paraffin, hydrogenated polyisobutene, ozokerite, olefin oligomer, pristane, ceresin, and microcrystalline wax.

[0084] Synthetic ester oils include isopropyl myristate, cetyl ethylhexanoate, octyldodecyl myristate, cetyl palmitate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl ethylhexanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl hydroxystearate, glycol diethylhexanoate, neopentyl glycol dicaprate, caprylic / capric triglyceride (a triester of caprylic and capric acid with glycerin), hydroxystearic acid, dipentaerythrityl hexahydroxystearate / stearic acid / rosinate (a hexaester of hydroxystearic acid, stearic acid, and rosin acid with dipentaerythritol), diisostearyl malate, and glyceryl diisostearate. , Trimethylolpropane Tri-2-ethylhexanoate, Trimethylolpropane Triethylhexanoate, Pentaerythrityl Tetraethylhexanoate, Trimethylolpropane Triisostearate, Ethylhexyl Palmitate, Trimyristin, Methyl Ricinoleate, Oleyl Oleate, Diisobutyl Adipate, Di(Phytosteryl / Octyldodecyl) Lauroyl Glutamate (Lauroyl Glutamic Acid and Phytosterol and Octyldodecyl) ester with ludocanol), diheptylundecyl adipate, ethyl laurate, diethylhexyl sebacate, isocetyl myristate, hexyldecyl palmitate, dihexyldecyl adipate, diisopropyl sebacate, diethylhexyl succinate, triethyl citrate, PEG-3 trimethylolpropane triisostearate, polyglyceryl-2 triisostearate, and sucrose tetraisostearate.

[0085] Examples of silicone oils include linear polysiloxanes, cyclic polysiloxanes, and modified polysiloxanes (amino-modified polysiloxanes, polyether-modified siloxanes, alkyl-modified polysiloxanes, and fluorine-modified polysiloxanes).

[0086] Examples of chain siloxanes include diphenyl dimethicone, caprylyl methicone, dimethicone, (dimethicone / vinyl dimethicone) crosspolymer (dimethylpolysiloxane crosslinked with divinyldimethylpolysiloxane), and (dimethicone / phenylvinyl dimethicone) crosspolymer (dimethylpolysiloxane copolymer crosslinked with phenylvinyldimethylpolysiloxane).

[0087] Examples of cyclic siloxanes include cyclopentasiloxane and cyclohexasiloxane.

[0088] Examples of modified polysiloxanes include amodimethicone (a silicone polymer whose terminals are modified with amino groups), aminopropyl dimethicone, alkyl (C26-28) dimethicone, alkyl (C30-45) dimethicone, PEG-10 dimethicone, PEG-12 dimethicone, and perfluorononyl dimethicone.

[0089] Cooling agents include menthol, peppermint oil, thymol, methyl salicylate, and camphor.

[0090] Examples of moisturizing agents include glycerin, 1,3-butylene glycol, hydrogenated rapeseed oil alcohol, sorbitol, sodium lactate, PCN-Na (sodium pyrrolidone carboxylate), sodium hyaluronate, and sodium chondroitin sulfate.

[0091] Examples of antioxidants include vitamin E, BHT (dibutylhydroxytoluene), BHA (butylhydroxyanisole), dipotassium glycyrrhizinate, ascorbyl palmitate, and rosemary leaf extract.

[0092] Examples of the chelating agent include EDTA (ethylenediaminetetraacetic acid), EDTA-2Na (disodium salt of ethylenediaminetetraacetic acid), sodium polyphosphate, disodium pyrophosphate, gluconic acid, sodium gluconate, and ascorbic acid.

[0093] Examples of thickeners include guar gum, xanthan gum, starch, behenyl alcohol, stearyl alcohol, cetearyl alcohol, cetanol, myristyl alcohol, carbomer, hydroxypropyl methylcellulose, polyvinyl alcohol, sodium polyacrylate, sodium acrylate-grafted starch, disteardimonium hectorite, talc, glycol distearate, and corn starch.

[0094] Examples of fragrances include limonene, β-caryophyllene, linalool, farnesol, phenethyl alcohol, citral, hexyl cinnamal, ionone, linalyl acetate, benzyl benzoate, undecalactone, cinnamaldehyde, anise oil, and jasmine oil.

[0095] Coloring agents include Blue No. 1, Blue No. 2, Green No. 3, and Red No. 1.

[0096] Examples of preservatives include phenoxyethanol, o-cymen-5-ol, methylparaben, ethylparaben, propylparaben, isopropylparaben, butylparaben, isobutylparaben, and isopropylmethylphenol.

[0097] Examples of ultraviolet protection agents include titanium oxide, zinc oxide, ethylhexyl methoxycinnamate, ethylhexyl dimethyl PABA, and t-butyl methoxydibenzoylmethane.

[0098] Examples of whitening agents include tranexamic acid, arbutin, and hydroquinone.

[0099] The content of the other component (C) in the cosmetic of the present invention can be adjusted appropriately depending on the formulation and intended use of the cosmetic. For example, the solvent contained in the cosmetic is preferably 95 wt% or less based on the total weight of the cosmetic, the amphoteric surfactants other than the amphoteric surfactant (A), the anionic surfactants, nonionic surfactants, cationic surfactants, oils, and moisturizers contained in the cosmetic are each preferably 50 wt% or less based on the total weight of the cosmetic, the whitening agents and conditioning agents are each preferably 20 wt% or less based on the total weight of the cosmetic, the pH adjusters, cooling agents, antioxidants, chelating agents, thickeners, UV protection agents, fragrances, and colorants are each preferably 10 wt% or less based on the total weight of the cosmetic, the water contained in the cosmetic is preferably 95 wt% or less based on the total weight of the cosmetic, and the preservatives contained in the cosmetic are preferably 0.5 wt% or less based on the total weight of the cosmetic. Note that, in this specification, when the anionic surfactant contains a fatty acid salt, it is assumed that all of the fatty acids in the cosmetic are potassium salts, and the weight of the potassium salts of the fatty acids is regarded as the weight of the fatty acid salts in the cosmetic.

[0100] When the cosmetic composition of the present invention is a shampoo, a preferred composition includes the following components. The surfactant composition for cosmetics of the present invention: 2.1 to 11.3% by weight Anionic surfactant: 15.0 to 33.0% by weight Amphoteric surfactant: 0 to 10.0% by weight Humectant: 0 to 2.0% by weight Conditioning agent: 0.5 to 2.3% by weight Oil: 0 to 0.3% by weight Chelating agent: 0 to 0.1% by weight Nonionic surfactant: 2.0 to 5.0% by weight Cooling agent: 0 to 1.0% by weight pH adjuster: 0 to 0.1% by weight

[0101] When the cosmetic of the present invention is a shampoo, the preferred composition of each component calculated as an active ingredient is as follows: The active ingredient means the component remaining after removing water from the raw material of each component. The surfactant composition for cosmetics of the present invention: 0.6 to 3.3% by weight Anionic surfactant: 4.9 to 10.0% by weight Amphoteric surfactant: 0 to 3.4% by weight Humectant: 0 to 2.0% by weight Conditioning agent: 0.5 to 0.6% by weight Oil: 0 to 0.3% by weight Chelating agent: 0 to 0.1% by weight Nonionic surfactant: 2.0 to 5.0% by weight Cooling agent: 0 to 1.0% by weight pH adjuster: 0 to 0.1% by weight

[0102] When the cosmetic composition of the present invention is a shampoo, the shampoo preferably contains, for example, the following ingredients: As the anionic surfactant, sodium cocoyl glutamate and / or sodium olefin sulfonate (having 14 to 16 carbon atoms) are preferred. As the amphoteric surfactant, cocamidopropyl betaine is preferred. As the moisturizing agent, BG (1,3-butylene glycol) is preferred. The conditioning agent is preferably one or more selected from the group consisting of polyquaternium-22, polyquaternium-7, and polyquaternium-10. As the oil, dimethicone is preferred. The chelating agent is preferably EDTA 2Na. As the nonionic surfactant, coconut oil fatty acid N-methylethanolamide and / or PEG-160 sorbitan triisostearate are preferred. The cooling agent is preferably menthol. The pH adjuster is preferably citric acid.

[0103] When the cosmetic of the present invention is a pump foamer facial cleanser, a preferred composition includes a composition containing the following components. The surfactant composition for cosmetics of the present invention: 6.0 to 12.0% by weight Anionic surfactant: 15.0 to 25.0% by weight Amphoteric surfactant: 0 to 10.0% by weight Conditioning agent: 0 to 5.0% by weight Water: 60.0~75.0% by weight

[0104] When the cosmetic of the present invention is a pump foamer facial cleanser, preferred compositions of each component calculated as an active ingredient include the following: The active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 1.5 to 4.0% by weight Anionic surfactant: 3.0 to 8.0% by weight Amphoteric surfactant: 0 to 2.0% by weight Conditioning agent: 0 to 1.0% by weight

[0105] When the cosmetic of the present invention is a pump foamer facial cleanser, the pump foamer facial cleanser preferably contains, for example, the following components. As the anionic surfactant, TEA lauroyl glutamate and / or sodium olefin (having 14 to 16 carbon atoms) sulfonate are preferred. As the amphoteric surfactant, cocamidopropyl betaine is preferred. A preferred conditioning agent is polyquaternium-7.

[0106] When the cosmetic of the present invention is a cream facial cleanser, a preferred composition includes the following components. The surfactant composition for cosmetics of the present invention: 3.8 to 5.0% by weight Anionic surfactant: 17.0 to 26.0% by weight Amphoteric surfactant: 0 to 3.0% by weight Humectant: 5 to 20% by weight Conditioning agent: 0 to 0.5% by weight Antioxidant: 0 to 0.1% by weight Nonionic surfactant: 0 to 8.0% by weight Thickener: 0 to 2.0% by weight pH adjuster: 0 to 6.3% by weight Water: 42.6~65.7% by weight

[0107] When the cosmetic of the present invention is a cream facial cleanser, preferred compositions of each component calculated as an active ingredient include the following: The active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 1.1 to 1.5% by weight Anionic surfactant: 13.5 to 26.0% by weight Amphoteric surfactant: 0 to 0.9% by weight Humectant: 5.0 to 20.0% by weight Conditioning agent: 0 to 0.05% by weight Antioxidant: 0 to 0.1% by weight Nonionic surfactant: 0 to 8.0% by weight Thickener: 0 to 2.0% by weight pH adjuster: 0 to 6.3% by weight

[0108] When the cosmetic of the present invention is a cream facial cleanser, the cream facial cleanser preferably contains, for example, the following ingredients: The anionic surfactant is preferably one or more selected from the group consisting of sodium cocoyl glutamate, coconut oil fatty acid glycine K, salts of lauric acid, salts of stearic acid, and salts of palmitic acid. As the amphoteric surfactant, cocamidopropyl betaine is preferred. Glycerin is a preferred moisturizing agent. A preferred conditioning agent is polyquaternium-7. Vitamin E is a preferred antioxidant. As the nonionic surfactant, coconut oil fatty acid N-methylethanolamide and / or PEG-190 distearate are preferred. The preferred thickener is glycol distearate. The pH adjuster is preferably potassium hydroxide.

[0109] When the cosmetic of the present invention is a lotion, a preferred composition includes the following components. The surfactant composition for cosmetics of the present invention: 5.0 to 10.0% by weight Solvent: 7.0 to 15.0% by weight Humectant: 2.0 to 4.0% by weight Thickener: 0.1 to 0.5% by weight Nonionic surfactant: 0.1 to 0.5% by weight Water: 75.0~85.0% by weight

[0110] When the cosmetic of the present invention is a lotion, preferred compositions of each component calculated as an active ingredient include the following: The active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 1.0 to 3.0% by weight Solvent: 7.0 to 15.0% by weight Humectant: 2.0 to 4.0% by weight Thickener: 0.1 to 0.5% by weight Nonionic surfactant: 0.1 to 0.5% by weight

[0111] When the cosmetic preparation of the present invention is a lotion, the lotion preferably contains, for example, the following components: The solvent is preferably isoprene diol and / or ethanol. Glycerin is a preferred moisturizing agent. As the thickener, xanthan gum and / or sodium acrylate grafted starch are preferred. As the nonionic surfactant, PEG-60 hydrogenated castor oil is preferred.

[0112] When the cosmetic of the present invention is a cream, a preferred composition includes the following components. The surfactant composition for cosmetics of the present invention: 2.0 to 4.0% by weight Moisturizer: 10.0 to 15.0% by weight Thickener: 3.0 to 8.0% by weight Antioxidant: 0 to 0.1% by weight Oil: 15.0 to 25.0% by weight Nonionic surfactant: 1.5 to 4.0% by weight Anionic surfactant: 0 to 2.0% by weight Preservatives: 0.1 to 0.5% by weight Water: 50.0~65.0% by weight

[0113] When the cosmetic of the present invention is a cream, the preferred composition of each component calculated as an active ingredient is as follows: Here, the active ingredient means the component remaining after removing water from the raw material of each component. The surfactant composition for cosmetics of the present invention: 0.5 to 1.0% by weight Moisturizer: 10.0 to 15.0% by weight Thickener: 3.0 to 8.0% by weight Antioxidant: 0 to 0.1% by weight Oil: 15.0 to 25.0% by weight Nonionic surfactant: 1.5 to 4.0% by weight Anionic surfactant: 0 to 2.0% by weight Preservatives: 0.1 to 0.5% by weight

[0114] When the cosmetic of the present invention is a cream, the cream preferably contains, for example, the following ingredients: As the moisturizing agent, glycerin and / or BG (1,3-butylene glycol) are preferred. As the thickener, behenyl alcohol and / or stearyl alcohol are preferred. Vitamin E is a preferred antioxidant. The oil agent is preferably one or more selected from the group consisting of caprylic / capric triglyceride, dipentaerythrityl hexahydroxystearate / hexastearate / hexarosinate, jojoba oil, and dimethicone. As the nonionic surfactant, PPG-2 ceteth-12 is preferred. As the preservative, phenoxyethanol and / or methylparaben are preferred. As the anionic surfactant, a salt of stearic acid and / or a salt of isostearic acid is preferred.

[0115] When the cosmetic of the present invention is a hand cream, a preferred composition includes the following components. The surfactant composition for cosmetics of the present invention: 4.0 to 8.0% by weight Humectant: 3.0 to 8.0% by weight Thickener: 0 to 0.5% by weight Antioxidant: 0 to 0.5% by weight Oil: 15.0 to 25.0% by weight Nonionic surfactant: 0.1 to 0.5% by weight Anionic surfactant: 0 to 2.0% by weight Water: 60.0~75.0% by weight

[0116] When the cosmetic of the present invention is a hand cream, the preferred composition of each component calculated as an active ingredient is as follows: Here, the active ingredient means the component remaining after removing water from the raw material of each component. The surfactant composition for cosmetics of the present invention: 1.0 to 2.5% by weight Humectant: 3.0 to 8.0% by weight Thickener: 0 to 0.5% by weight Antioxidant: 0 to 0.5% by weight Oil: 15.0 to 25.0% by weight Nonionic surfactant: 0.1 to 0.5% by weight Anionic surfactant: 0 to 2.0% by weight

[0117] When the cosmetic of the present invention is a hand cream, the hand cream preferably contains, for example, the following ingredients: The moisturizing agent is preferably one or more selected from the group consisting of glycerin, BG (1,3-butylene glycol), and hydrogenated rapeseed oil alcohol. Xanthan gum is preferred as the thickener. Vitamin E is a preferred antioxidant. The oil agent is preferably one or more selected from the group consisting of ethylhexyl palmitate, shea butter, and triethylhexanoin. As the nonionic surfactant, PEG-190 distearate is preferred. As the anionic surfactant, a salt of stearic acid and / or a salt of isostearic acid is preferred.

[0118] When the cosmetic of the present invention is a cleansing oil, preferred compositions include those containing the following components. The surfactant composition for cosmetics of the present invention: 10.0 to 20.0% by weight Oil: 60.0 to 70.0% by weight Nonionic surfactant: 15.0 to 25.0% by weight Anionic surfactant: 0 to 2.0% by weight

[0119] When the cosmetic of the present invention is a cleansing oil, preferred compositions of each component calculated as an active ingredient include the following: The active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 3.0 to 5.0% by weight Oil: 60.0 to 70.0% by weight Nonionic surfactant: 15.0 to 25.0% by weight Anionic surfactant: 0 to 2.0% by weight

[0120] When the cosmetic of the present invention is a cleansing oil, the cleansing oil preferably contains, for example, the following components: The oil agent is preferably one or more selected from the group consisting of ethylhexyl palmitate, cyclopentasiloxane, and mineral oil. The nonionic surfactant is preferably one or more selected from the group consisting of sorbitan oleate, PEG-9 oleate, and Cetoleth-5. As the anionic surfactant, a salt of stearic acid and / or a salt of isostearic acid is preferred.

[0121] When the cosmetic composition of the present invention is a conditioner, preferred compositions include those containing the following components. The surfactant composition for cosmetics of the present invention: 5.0 to 10.0% by weight Thickener: 0.5 to 1.5% by weight Oil: 2.5 to 5.0% by weight Nonionic surfactant: 0.5 to 1.0% by weight Cationic surfactant: 1.0 to 5.0% by weight Preservatives: 0.1 to 0.5% by weight Water: 80.0~90.0% by weight

[0122] When the cosmetic of the present invention is a conditioner, preferred compositions of each component calculated as an active ingredient include the following: The active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 1.0 to 3.0% by weight Thickener: 0.5 to 1.5% by weight Oil: 2.5 to 5.0% by weight Nonionic surfactant: 0.5 to 1.0% by weight Cationic surfactant: 1.0 to 4.0% by weight Preservatives: 0.1 to 0.5% by weight

[0123] When the cosmetic of the present invention is a conditioner, the conditioner preferably contains, for example, the following components: The preferred thickening agent is cetearyl alcohol. The oil is preferably one or more selected from the group consisting of shea butter, dimethicone, and mineral oil. As the nonionic surfactant, glyceryl stearate is preferred. The preservative is preferably phenoxyethanol. As the cationic surfactant, behentrimonium chloride is preferred.

[0124] When the cosmetic composition of the present invention is a non-cationic conditioner, preferred compositions include those containing the following components. The surfactant composition for cosmetics of the present invention: 1.5 to 4.0% by weight Humectant: 1.5 to 5.0% by weight Thickener: 3.0 to 6.0% by weight Oil: 1.5 to 4.0% by weight Water: 85.0~95.0% by weight

[0125] When the cosmetic of the present invention is a non-cationic conditioner, preferred compositions of each component calculated as an active ingredient include the following: The active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 0.3 to 1.5% by weight Humectant: 1.5 to 5.0% by weight Thickener: 3.0 to 6.0% by weight Oil: 1.5 to 4.0% by weight

[0126] When the cosmetic of the present invention is a non-cationic conditioner, the non-cationic conditioner preferably contains, for example, the following components: Glycerin is a preferred moisturizing agent. The thickener is preferably one or more selected from the group consisting of cetyl alcohol, hydroxypropyl methylcellulose, and xanthan gum. As the oil, shea butter is preferred.

[0127] When the cosmetic composition of the present invention is a hair gel, a preferred composition includes the following components. The surfactant composition for cosmetics of the present invention: 5.0 to 10.0% by weight Thickener: 0.1 to 0.5% by weight Oil: 10.0 to 20.0% by weight Nonionic surfactant: 1.5 to 4.0% by weight Conditioning agent: 0.1 to 1.0% by weight pH adjuster: 0.1 to 0.5% by weight Preservatives: 0.1 to 0.5% by weight Water: 70.0~80.0% by weight

[0128] When the cosmetic of the present invention is a hair gel, preferred compositions of each component calculated as an active ingredient include the following: The active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 1.5 to 4.0% by weight Thickener: 0.1 to 0.5% by weight Oil: 10.0 to 20.0% by weight Nonionic surfactant: 1.5 to 4.0% by weight Conditioning agent: 0.1 to 1.0% by weight pH adjuster: 0.1 to 0.5% by weight Preservatives: 0.1 to 0.5% by weight

[0129] When the cosmetic of the present invention is a hair gel, the hair gel preferably contains, for example, the following ingredients: Carbomer is preferred as the thickener. The oil agent is preferably one or more selected from the group consisting of dipentaerythrityl hexa(hydroxystearate / stearate / rosinate), squalane, candelilla wax, mineral oil, and beeswax. The nonionic surfactant is preferably one or more selected from the group consisting of PPG-7-buteth-10, PPG-34, PEG-60 hydrogenated castor oil, and laureth-7. As a conditioning agent, PEG-400 is preferred. The pH adjuster is preferably potassium hydroxide. The preservative is preferably phenoxyethanol.

[0130] When the cosmetic composition of the present invention is a hair spray, a preferred composition includes the following components. The surfactant composition for cosmetics of the present invention: 1.0 to 5.0% by weight Humectant: 1.0 to 3.0% by weight Solvent: 90.0 to 95.0% by weight Oil: 0.5 to 2.0% by weight Conditioning agent: 2.0 to 4.0% by weight

[0131] When the cosmetic of the present invention is a hair spray, the preferred composition of each component calculated as an active ingredient is as follows: The active ingredient means the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 0.5 to 1.5% by weight Humectant: 1.0 to 3.0% by weight Solvent: 90.0 to 95.0% by weight Oil: 0.5 to 2.0% by weight Conditioning agent: 2.0 to 4.0% by weight

[0132] When the cosmetic composition of the present invention is a hair spray, the hair spray preferably contains, for example, the following ingredients: Glycerin is a preferred moisturizing agent. The solvent is preferably denatured alcohol. As the oil, PEG-12 dimethicone is preferred. As the conditioning agent, a (vinylpyrrolidone / VA) copolymer is preferred.

[0133] When the cosmetic composition of the present invention is a cream-type UV care cosmetic composition, preferred compositions include compositions containing the following components. The surfactant composition for cosmetics of the present invention: 5.0 to 10.0% by weight UV protection agent: 10.0 to 20.0% by weight Oil: 5.0 to 15.0% by weight Nonionic surfactant: 1.0 to 5.0% by weight Thickener: 5.0 to 10.0% by weight Humectant: 1.0 to 3.0% by weight Preservatives: 0 to 0.5% by weight Water: 50.0~60.0% by weight

[0134] When the cosmetic composition of the present invention is a cream-type UV care cosmetic composition, preferred compositions of each component calculated as an active ingredient include the following: Here, the active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 1.0 to 3.0% by weight UV protection agent: 10.0 to 20.0% by weight Oil: 5.0 to 15.0% by weight Nonionic surfactant: 1.0 to 5.0% by weight Thickener: 5.0 to 10.0% by weight Humectant: 1.0 to 3.0% by weight Preservatives: 0 to 0.5% by weight

[0135] When the cosmetic of the present invention is a cream-type UV care cosmetic, the cream-type UV care cosmetic preferably contains, for example, the following ingredients: The ultraviolet protection agent is preferably one or more selected from the group consisting of titanium oxide, zinc oxide, ethylhexyl methoxycinnamate, and t-butyl methoxydibenzoylmethane. The oil agent is preferably one or more selected from the group consisting of diisostearyl malate, tri(caprylic / capric acid)glyceryl, and dimethicone. As the nonionic surfactant, PPG-2 ceteth-12 is preferred. As the thickener, behenyl alcohol and / or carbomer are preferred. Glycerin is a preferred moisturizing agent. The preservative is preferably phenoxyethanol.

[0136] When the cosmetic composition of the present invention is a gel-type UV care cosmetic composition, preferred compositions include compositions containing the following components. The surfactant composition for cosmetics of the present invention: 1.0 to 5.0% by weight UV protection agent: 10.0 to 20.0% by weight Oil: 2.0 to 6.0% by weight Thickener: 0.5 to 2.0% by weight Anionic surfactant: 0 to 5.0% by weight Humectant: 5.0 to 10.0% by weight Solvent: 1.0 to 5.0% by weight pH adjuster: 0.2 to 1.0% by weight Water: 60.0~70.0% by weight

[0137] When the cosmetic of the present invention is a gel-type UV care cosmetic, preferred compositions of each component calculated as an active ingredient include the following: Here, the active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 0.3 to 1.5% by weight UV protection agent: 10.0 to 20.0% by weight Oil: 2.0 to 6.0% by weight Thickener: 0.5 to 2.0% by weight Anionic surfactant: 0 to 5.0% by weight Humectant: 5.0 to 10.0% by weight Solvent: 1.0 to 5.0% by weight pH adjuster: 0.2 to 1.0% by weight

[0138] When the cosmetic of the present invention is a gel-type UV care cosmetic, the gel-type UV care cosmetic preferably contains, for example, the following components: As the ultraviolet protection agent, ethylhexyl methoxycinnamate and / or t-butyl methoxydibenzoylmethane are preferred. The oil is preferably ethylhexyl palmitate. As the thickener, carbomer and / or xanthan gum are preferred. Glycerin is a preferred moisturizing agent. The solvent is preferably isoprene diol. The pH adjuster is preferably potassium hydroxide and / or citric acid. The anionic surfactant is preferably a salt of isostearic acid and / or a salt of stearic acid.

[0139] When the cosmetic of the present invention is in the form of a pack, a preferred composition includes the following components. The surfactant composition for cosmetics of the present invention: 5.0 to 10.0% by weight Moisturizer: 15.0 to 25.0% by weight Thickener: 0.1 to 0.5% by weight Whitening agent: 0 to 0.5% by weight Antioxidant: 0 to 0.3% by weight Preservatives: 0 to 0.5% by weight Water: 67.0~77.0% by weight

[0140] When the cosmetic preparation of the present invention is in the form of a pack, preferred compositions of each component calculated as an active ingredient include the following: The active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 1.0 to 4.0% by weight Moisturizer: 15.0 to 25.0% by weight Thickener: 0.1 to 0.5% by weight Whitening agent: 0 to 0.5% by weight Antioxidant: 0 to 0.3% by weight Preservatives: 0 to 0.5% by weight

[0141] When the cosmetic preparation of the present invention is a pack, the pack preferably contains, for example, the following ingredients: The moisturizing agent is preferably glycerin and / or sodium hyaluronate. Xanthan gum is preferred as the thickener. Tranexamic acid is preferred as a whitening agent. Vitamin E is a preferred antioxidant. The preservative is preferably phenoxyethanol.

[0142] When the cosmetic of the present invention is a makeup remover sheet, a preferred composition includes the following components. The surfactant composition for cosmetics of the present invention: 1.0 to 5.0% by weight Moisturizer: 5.0 to 15.0% by weight Nonionic surfactant: 5.0 to 15.0% by weight Water: 72.0~82.0% by weight

[0143] When the cosmetic of the present invention is a makeup remover sheet, preferred compositions of each component calculated as an active ingredient include the following: Here, the active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 0.3 to 1.5% by weight Moisturizer: 5.0 to 15.0% by weight Nonionic surfactant: 5.0 to 15.0% by weight

[0144] When the cosmetic of the present invention is a makeup remover sheet, the makeup remover sheet preferably contains, for example, the following components. Glycerin is a preferred moisturizing agent. The nonionic surfactant is preferably PEG-9 oleate.

[0145] When the cosmetic of the present invention is a sweat wipe sheet, a preferred composition includes the following components. The surfactant composition for cosmetics of the present invention: 4.0 to 8.0% by weight Solvent: 25.0 to 35.0% by weight Humectant: 3.0 to 5.0% by weight Preservatives: 0 to 0.5% by weight Water: 55.0~65.0% by weight

[0146] When the cosmetic of the present invention is a sweat wipe sheet, preferred compositions of each component calculated as an active ingredient include the following: Here, the active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 1.0 to 4.0% by weight Solvent: 25.0 to 35.0% by weight Humectant: 3.0 to 5.0% by weight Preservatives: 0 to 0.5% by weight

[0147] When the cosmetic of the present invention is a sweat wipe sheet, the sweat wipe sheet preferably contains, for example, the following components. The solvent is preferably ethanol. As the moisturizing agent, BG (1,3-butylene glycol) and / or sodium hyaluronate are preferred. The preservative is preferably isopropylmethylphenol.

[0148] When the cosmetic composition of the present invention is a hair wiping sheet, a preferred composition includes the following components. The surfactant composition for cosmetics of the present invention: 11.0 to 17.0% by weight Solvent: 15.0 to 25.0% by weight Humectant: 3.0 to 8.0% by weight Antioxidant: 0 to 0.1% by weight Nonionic surfactant: 0.1 to 1.0% by weight Cooling agent: 0.1 to 1.0% by weight Water: 55.0~65.0% by weight

[0149] When the cosmetic composition of the present invention is a hair wiping sheet, preferred compositions of each component calculated as an active ingredient include the following: The active ingredient refers to the component remaining after removing water from the raw materials of each component. The surfactant composition for cosmetics of the present invention: 2.0 to 6.0% by weight Solvent: 15.0 to 25.0% by weight Humectant: 3.0 to 8.0% by weight Antioxidant: 0 to 0.1% by weight Nonionic surfactant: 0.1 to 1.0% by weight Cooling agent: 0.1 to 1.0% by weight

[0150] When the cosmetic composition of the present invention is a hair wiping sheet, the hair wiping sheet preferably contains, for example, the following components. The solvent is preferably ethanol. Glycerin is a preferred moisturizing agent. Vitamin E is a preferred antioxidant. As the nonionic surfactant, PEG-60 hydrogenated castor oil is preferred. The cooling agent is preferably phenoxyethanol.

[0151] The cosmetic of the present invention can be produced by mixing the above-mentioned surfactant composition for cosmetics with other components (C) that are used as needed. Alternatively, the cosmetic of the present invention may be produced by mixing the amphoteric surfactant (a1), the ester (b1), and other components (C) used as needed so that the contents of the amphoteric surfactant (a1) and the ester (b1) in the cosmetic are in the specified proportions in the surfactant composition for cosmetics. The order of mixing the raw materials is not particularly limited, but when water is used, it is preferable to add the cosmetic surfactant composition and other component (C) to the water from the viewpoint of uniformity of the cosmetic. For mixing, a known mixer equipped with an agitator such as a paddle-type agitator blade or a spiral agitator blade can be used.

[0152] The cosmetic of the present invention containing the surfactant composition for cosmetics can exhibit excellent bacteriostatic properties against Escherichia coli, Staphylococcus aureus, Aspergillus niger, and Propionibacterium acnes, which are normal skin flora. Various resident skin bacteria form the resident skin flora on the surface of human skin, which protects the skin surface from external stimuli. It is known that if the balance of the resident skin flora is disrupted, for example, by the proliferation or decrease of specific resident skin bacteria, it can cause skin diseases such as acne and skin inflammation. It is presumed that the cosmetic surfactant composition contained in the cosmetic of the present invention has excellent bacteriostatic properties against Escherichia coli, Staphylococcus aureus, Aspergillus niger, and Propionibacterium acnes, which are all resident bacteria on the skin, and thereby prevents the proliferation of these bacteria, thereby enabling the formation of a well-balanced resident skin flora. Furthermore, it is expected that continuous use of the cosmetic of the present invention will improve the normal flora of the skin.

[0153] Furthermore, when the cosmetic of the present invention is used as a cleanser, it is characterized by low elution of natural moisturizing factors (hereinafter sometimes abbreviated as NMF).It is presumed that the cosmetic of the present invention exhibits excellent moisturizing properties due to the low elution of NMF components.

[0154] Furthermore, the cosmetic surfactant composition contained in the cosmetic of the present invention prevents the proliferation of Escherichia coli, Staphylococcus aureus, and Aspergillus niger, which may deteriorate the quality of the cosmetic, and therefore the cosmetic of the present invention can be expected to have the characteristic of being less susceptible to deterioration in quality.

[0155] The present specification discloses the following:

[0156] The present disclosure (1) is a cosmetic surfactant composition containing an amphoteric surfactant (A) and an ester (B), wherein the amphoteric surfactant (A) contains an amphoteric surfactant (a1) represented by the following general formula (1), the ester (B) contains an ester (b1) represented by the following general formula (2), and the weight ratio of the ester (b1) to the weight of the amphoteric surfactant (a1) is 0.1% by weight to 10% by weight. [ka] [In the formula, R 1 represents an alkyl or alkenyl group having 6 to 25 carbon atoms, X represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, M1 represents a hydrogen atom, a sodium atom, a potassium atom or triethanolammonium, and n represents 1 or 2.] [ka] [In the formula, R 2 represents an alkyl or alkenyl group having 6 to 25 carbon atoms, and n represents 1 or 2.]

[0157] The present disclosure (2) is a cosmetic comprising the surfactant composition for cosmetics described in the present disclosure (1). [Example]

[0158] The present invention will be further explained below with reference to examples and comparative examples, but the present invention is not limited to these.

[0159] <Production Example 1> A 2 L four-neck flask equipped with a stirrer, reflux condenser, dropping funnel, and thermometer was charged with 185 g of laurylamine [Nissan Amine BB, manufactured by NOF Corporation (Nissan Amine is a registered trademark of NOF Corporation)], and after nitrogen substitution, the temperature was raised to 70°C. 101 g of methyl acrylate [manufactured by Toagosei Co., Ltd.] was added dropwise from the dropping funnel over 3 hours, and the reaction was carried out at the same temperature. The temperature was then raised to 100°C, and the reaction was carried out for 7 hours. The pressure was then reduced to 2.7 kPa at the same temperature, and the remaining methyl acrylate was removed. To the resulting reaction solution, 32 g of a 49 wt % aqueous sodium hydroxide solution and 964 g of water were added, and a hydrolysis reaction was carried out at 95° C. for 3 hours. Lactic acid was added while measuring the pH of the resulting hydrolyzed solution so that the pH became 6.0. The total weight of the added lactic acid was 62.5 g. The solution after the addition of lactic acid was heated at 90° C. to distill off the methanol in the solution, and surfactant aqueous solution 1 was obtained. A 1 g sample was taken from the surfactant aqueous solution 1, and the ester (b1) and amphoteric surfactant (a1) contained in the sampled solution were identified, and their contents were measured by the quantitative analysis method using GC described below. The surfactant aqueous solution 1 contained 0.11 wt % of methyl β-dodecylaminopropionate (b1-1) as the ester (B) and 28.89 wt % of sodium β-dodecylaminopropionate (a1-1) as the amphoteric surfactant (A).

[0160] <GC analysis method for ester (b1) content> First, a calibration curve was prepared using n-decane as an internal standard and methyl β-dodecylaminopropionate (b1-1) as a substance to be quantified. Next, 2 g of a 1 wt% ethanol solution of n-decane was added to the sample sampled from the surfactant aqueous solution 1, and then 50 mL of ethanol was further added to prepare a sample solution, and analysis by GC was performed. Based on the content of methyl β-dodecylaminopropionate (b1-1) contained in the sampled sample obtained from the peak area ratio of methyl β-dodecylaminopropionate (b1-1) and n-decane in the GC spectrum obtained by the analysis, the content of methyl β-dodecylaminopropionate (b1-1) contained in the surfactant aqueous solution 1 was calculated.

[0161] <GC measurement conditions> Apparatus: GC-9A (manufactured by Shimadzu Corporation) Detector: FID GC packed column: SE-30 (dimethylpolysiloxane content 5 wt%, inner diameter 3.2 mm, length 2.1 m, manufactured by GL Sciences Inc.) Column temperature: Temperature increase from 80 °C to 280 °C (heating rate: 10 °C / min) Sample injection volume: 5 μL

[0162] <Quantitative analysis method of amphoteric surfactant (a1) by GC> Hydrochloric acid (35 wt% aqueous solution, manufactured by FUJIFILM Wako Pure Chemical Corporation) was added to the surfactant aqueous solution 1 (80 g) to adjust the pH to 2, and 20 g of petroleum ether (manufactured by FUJIFILM Wako Pure Chemical Corporation) was added and mixed to extract sodium β-dodecylaminopropionate (a1-1) and methyl β-dodecylaminopropionate (b1-1) contained in the surfactant aqueous solution 1 into petroleum ether. The mixture was then separated into an aqueous layer and an oil layer using a 200 mL separatory funnel, and the oil layer was removed. Using a rotary evaporator (rotation speed: 50 rpm / min), the oil layer was decompressed at 0.09 MPa for 3 hours in a 60 °C water bath to distill off the petroleum ether. The weight of the residue (a mixture of amphoteric surfactant (a1) and ester (b1)) after distilling off the petroleum ether was recorded, and then a sample (0.03 g) was taken from the residue, to which N,N-dimethylformamide dimethyl acetal (Tokyo Chemical Industry Co., Ltd.) (1 g) was added and heated at 60 °C for 15 minutes to carry out the methyl esterification reaction of the amphoteric surfactant (a1) contained in the residue. The resulting reaction mixture (a reaction mixture containing ester (b1)) was used as the measurement sample for GC analysis. A sample was weighed from the resulting reaction mixture and sampled for GC measurement. 2 g of a 1 wt % ethanol solution of n-decane was then added, followed by 50 mL of ethanol to prepare a sample solution, which was then analyzed by GC. The content of methyl β-dodecylaminopropionate (b1-1) in the sample sampled from the residue for GC measurement was calculated from the peak area ratio of methyl β-dodecylaminopropionate (b1-1) to n-decane in the GC spectrum obtained by the analysis. The total number of moles of methyl β-dodecylaminopropionate (b1-1) and sodium β-dodecylaminopropionate (a1-1) contained in surfactant aqueous solution 1 (80 g) was calculated from the content of methyl β-dodecylaminopropionate (b1-1) contained in a sample taken for GC measurement from the residue after distilling off the petroleum ether. The number of moles of methyl β-dodecylaminopropionate (b1-1) obtained from the analysis results of the content of the ester (b1) was subtracted from the total number of moles obtained to calculate the number of moles of sodium β-dodecylaminopropionate (a1-1). This was then converted into the weight of sodium β-dodecylaminopropionate (a1-1) based on the molecular weight of sodium β-dodecylaminopropionate (a1-1), thereby determining the content of amphoteric surfactant (a1) contained in aqueous surfactant solution 1.

[0163] <Production Example 2> A 2L four-neck flask equipped with a stirrer, reflux condenser, dropping funnel, and thermometer was charged with 185g of laurylamine (Nissan Amine BB), and after purging with nitrogen, the flask was heated to 70°C, and 101g of methyl acrylate (manufactured by Toagosei Co., Ltd.) was added dropwise from the dropping funnel over 3 hours, and the reaction was carried out at the same temperature. The temperature was then raised to 100°C, and the reaction was carried out for 7 hours, after which the pressure was reduced to 2.7kPa at the same temperature, and the remaining methyl acrylate was removed. To the resulting reaction solution, 32 g of a 49 wt % aqueous sodium hydroxide solution and 964 g of water were added, and a hydrolysis reaction was carried out at 95° C. for 1 hour. Lactic acid was added while measuring the pH of the reaction solution after hydrolysis so that the pH of the solution became 6.0. The total weight of the added lactic acid was 62.5 g. The solution after the addition of lactic acid was heated at 90° C. to distill off the methanol in the solution, thereby obtaining surfactant aqueous solution 2. A 1 g sample was taken from the surfactant aqueous solution 2, and the ester (b1) and amphoteric surfactant (a1) contained in the sampled solution were identified, and their contents were measured in the same manner as in Example 1. The surfactant aqueous solution 2 contained 2.15% by weight of methyl β-dodecylaminopropionate (b1-1) as the ester (B) and 26.85% by weight of sodium β-dodecylaminopropionate (a1-1) as the amphoteric surfactant (A).

[0164] <Production Example 3> A 2L four-neck flask equipped with a stirrer, reflux condenser, dropping funnel, and thermometer was charged with 185g of laurylamine (Nissan Amine BB), and after purging with nitrogen, the flask was heated to 70°C, and 101g of methyl acrylate (manufactured by Toagosei Co., Ltd.) was added dropwise from the dropping funnel over 3 hours, and the reaction was carried out at the same temperature. The temperature was then raised to 100°C, and the reaction was carried out for 7 hours, after which the pressure was reduced to 2.7kPa at the same temperature, and the remaining methyl acrylate was removed. To the resulting reaction solution, 32 g of a 49 wt % aqueous sodium hydroxide solution and 964 g of water were added, and a hydrolysis reaction was carried out at 150° C. for 6 hours. Lactic acid was added while measuring the pH of the resulting hydrolyzed solution so that the pH became 6.0. The total weight of the added lactic acid was 62.5 g. The solution after the addition of lactic acid was heated at 90° C. to distill off the methanol in the solution, and surfactant aqueous solution 3 was obtained. A 1 g sample was taken from the surfactant aqueous solution 3, and the ester (b1) and amphoteric surfactant (a1) contained in the sampled solution were identified. Their contents were measured in the same manner as in Example 1. The surfactant aqueous solution 3 contained 29.00% by weight of sodium β-dodecylaminopropionate (a1-1) as the amphoteric surfactant (A), and did not contain the ester (b1).

[0165] <Production Example 4> A 2L four-neck flask equipped with a stirrer, reflux condenser, dropping funnel, and thermometer was charged with 185g of laurylamine (Nissan Amine BB), and after purging with nitrogen, the flask was heated to 70°C, and 215g of methyl acrylate (manufactured by Toagosei Co., Ltd.) was added dropwise from the dropping funnel over 3 hours, and the reaction was carried out at the same temperature. The temperature was then raised to 100°C, and the reaction was carried out for 7 hours, after which the pressure was reduced to 2.7kPa at the same temperature, and the remaining methyl acrylate was removed. To the resulting reaction solution, 664 g of water was added to obtain a surfactant aqueous solution 4. 1 g of the aqueous surfactant solution 4 was sampled. The contents of the ester (b1) and amphoteric surfactant (a1) contained in the sampled solution were measured in the same manner as in Example 1. The surfactant aqueous solution 4 contained 29.00 wt % of methyl β-dodecylaminopropionate (b1-1) as the ester (B), and did not contain any amphoteric surfactant (a1).

[0166] <Production Example 5> A 2 L four-neck flask equipped with a stirrer, reflux condenser, dropping funnel, and thermometer was charged with 129 g of octylamine [Farmin 08D {manufactured by Kao Corporation (Farmin is a registered trademark of Kao Corporation)}], and after nitrogen substitution, the temperature was raised to 70°C. 101 g of methyl acrylate [manufactured by Toagosei Co., Ltd.] was added dropwise from the dropping funnel over 3 hours, and the reaction was carried out at the same temperature. The temperature was then raised to 100°C, and the reaction was carried out for 7 hours. The pressure was then reduced to 2.7 kPa at the same temperature, and the remaining methyl acrylate was removed. To the resulting reaction solution, 32 g of a 49 wt % aqueous sodium hydroxide solution and 964 g of water were added, and a hydrolysis reaction was carried out at 95° C. for 6 hours. Lactic acid was added while measuring the pH of the resulting hydrolyzed solution so that the pH became 6.0. The total weight of the added lactic acid was 62.5 g. The solution after the addition of lactic acid was heated at 90° C. to distill off the methanol in the solution, and surfactant aqueous solution 5 was obtained. A 1 g sample was taken from the surfactant aqueous solution 5, and the ester (b1) and amphoteric surfactant (a1) contained in the sampled solution were identified. Their contents were measured in the same manner as in Example 1. The surfactant aqueous solution 5 contained 0.03 wt % of methyl β-octylaminopropionate (b1-2) as the ester (B) and 28.97 wt % of sodium β-octylaminopropionate (a1-2) as the amphoteric surfactant (A).

[0167] <Production Example 6> A 2L four-neck flask equipped with a stirrer, reflux condenser, dropping funnel, and thermometer was charged with 270g of stearylamine [Nissan Amine AB (NOF Corporation)], and after purging with nitrogen, the temperature was raised to 70°C, and 101g of methyl acrylate [Toagosei Co., Ltd.] was added dropwise from the dropping funnel over 3 hours, and the reaction was carried out at the same temperature. The temperature was then raised to 100°C, and the reaction was carried out for 7 hours, and the pressure was reduced to 2.7kPa at the same temperature, and the remaining methyl acrylate was removed. To the resulting reaction solution, 32 g of a 49 wt % aqueous sodium hydroxide solution and 964 g of water were added, and a hydrolysis reaction was carried out at 95° C. for 6 hours. Lactic acid was added while measuring the pH of the resulting hydrolyzed solution so that the pH became 6.0. The total weight of the added lactic acid was 62.5 g. The solution after the addition of lactic acid was heated at 90° C. to distill off the methanol in the solution, and an aqueous surfactant solution 6 was obtained. A 1 g sample was taken from the aqueous surfactant solution 6, and the ester (b1) and amphoteric surfactant (a1) contained in the sampled solution were identified. Their contents were measured in the same manner as in Example 1. The surfactant aqueous solution 6 contained 0.03 wt % of methyl β-stearylaminopropionate (b1-3) as the ester (B) and 28.97 wt % of sodium β-stearylaminopropionate (a1-3) as the amphoteric surfactant (A).

[0168] <Production Example 7> A 2L four-neck flask equipped with a stirrer, reflux condenser, dropping funnel, and thermometer was charged with 270g of stearylamine (Nissanamine AB), and after replacing the atmosphere with nitrogen, the temperature was raised to 70°C, and 101g of methyl acrylate (manufactured by Toagosei Co., Ltd.) was added dropwise from the dropping funnel over 3 hours, and the reaction was carried out at the same temperature. The temperature was then raised to 100°C, and the reaction was carried out for 7 hours, and the pressure was reduced to 2.7kPa at the same temperature, and the remaining methyl acrylate was removed. To the resulting reaction solution, 32 g of a 49 wt % aqueous sodium hydroxide solution and 964 g of water were added, and a hydrolysis reaction was carried out at 80° C. for 2 hours. Lactic acid was added while measuring the pH of the resulting hydrolyzed solution so that the pH became 6.0. The total weight of the added lactic acid was 62.5 g. The solution after the addition of lactic acid was heated at 90° C. to distill off the methanol in the solution, and surfactant aqueous solution 7 was obtained. A 1 g sample was taken from the surfactant aqueous solution 7, and the ester (b1) and amphoteric surfactant (a1) contained in the sampled solution were identified and their contents were measured in the same manner as in Example 1. The surfactant aqueous solution 7 contained 2.39% by weight of methyl β-stearylaminopropionate (b1-3) as the ester (B) and 26.61% by weight of sodium β-stearylaminopropionate (a1-3) as the amphoteric surfactant (A).

[0169] <Production Example 8> A 2L four-neck flask equipped with a stirrer, reflux condenser, dropping funnel, and thermometer was charged with 298 g of icosan-1-amine (manufactured by Fujifilm Wako Pure Chemical Industries, Ltd.), and after purging with nitrogen, the flask was heated to 70°C, and 101 g of methyl acrylate (manufactured by Toagosei Co., Ltd.) was added dropwise from the dropping funnel over 3 hours, and the reaction was carried out at the same temperature. The temperature was then raised to 100°C, and the reaction was carried out for 7 hours. The pressure was then reduced to 2.7 kPa at the same temperature, and the remaining methyl acrylate was removed. To the resulting reaction solution, 32 g of a 49 wt % aqueous sodium hydroxide solution and 964 g of water were added, and a hydrolysis reaction was carried out at 80° C. for 1 hour. Lactic acid was added while measuring the pH of the resulting hydrolyzed solution so that the pH became 6.0. The total weight of the added lactic acid was 62.5 g. The solution after the addition of lactic acid was heated at 90° C. to distill off the methanol in the solution, and an aqueous surfactant solution 8 was obtained. A 1 g sample was taken from the aqueous surfactant solution 8, and the ester (b1) and amphoteric surfactant (a1) contained in the sampled solution were identified. Their contents were measured in the same manner as in Example 1. The surfactant aqueous solution 8 contained 2.64 wt % of methyl β-icosylaminopropionate (b1-4) as the ester (B) and 26.36 wt % of sodium β-icosylaminopropionate (a1-4) as the amphoteric surfactant (A).

[0170] <Examples 1 to 8 and Comparative Examples 1 to 3> The surfactant aqueous solutions 1 to 8 obtained in Production Examples 1 to 8 were mixed in the proportions shown in Table 1 to prepare cosmetic surfactant compositions 1 to 8 of the present invention and comparative surfactant compositions 1' and 2'. In Example 2, the aqueous surfactant solution 2 obtained in Production Example 2 was used as cosmetic surfactant composition 2; in Example 5, the aqueous surfactant solution 5 obtained in Production Example 5 was used as cosmetic surfactant composition 5; in Example 6, the aqueous surfactant solution 6 obtained in Production Example 6 was used as cosmetic surfactant composition 6; in Example 7, the aqueous surfactant solution 7 obtained in Production Example 7 was used as cosmetic surfactant composition 7; in Comparative Example 1, the aqueous surfactant solution 3 obtained in Production Example 3 was used as comparative surfactant composition 1'; and in Comparative Example 3, the aqueous surfactant solution 4 obtained in Production Example 4 was used as comparative surfactant composition 3'. The storage stability of the obtained cosmetic surfactant compositions 1 to 8 and comparative surfactant compositions 1′ to 3′ was measured by the following method. The results are shown in Table 1.

[0171] <Storage stability of surfactant composition for cosmetics> Cosmetic surfactant compositions 1 to 8 and comparative surfactant compositions 1' to 3' according to Examples 1 to 8 and Comparative Examples 1 to 3 were stored in light-shielded screw tube No. 7 (manufactured by Maruemu Co., Ltd.) at 25°C immediately after preparation of 30 g of each cosmetic surfactant composition, and the appearance was visually inspected 90 days after the start of storage, and the storage stability was evaluated according to the following criteria. (Evaluation criteria for storage stability) 〇: The appearance is transparent on the 90th day, with no cloudiness or separation observed. ×: Cloudy or separated in appearance after 90 days

[0172] [Table 1]

[0173] <Examples 9 to 17 and Comparative Examples 4 to 6> The cosmetic surfactant compositions of the present invention obtained in Examples 1 to 8 and the comparative cosmetic surfactant compositions obtained in Comparative Examples 1 to 3 were mixed with other component (C) described below in the proportions shown in Tables 2 to 5 to prepare cleansers (shampoos, pump-foam facial cleansers, and cream facial cleansers) that are cosmetics of the present invention according to Examples 9 to 17, and comparative cleansers (shampoos) according to Comparative Examples 4 to 6. In Tables 2 to 5, the numbers in parentheses are the values ​​of the components (sometimes called active ingredients) remaining after removing water from each raw material.

[0174] [Table 2]

[0175] [Table 3]

[0176] [Table 4]

[0177] [Table 5]

[0178] As other components (C) shown in Tables 2 to 5, the following were used. 26% by weight aqueous solution of sodium polyoxyethylene (degree of polymerization 2) lauryl ether sulfate [product name: Viewlite NA-25S {manufactured by Sanyo Chemical Industries, Ltd. (Viewlite is a registered trademark of Sanyo Chemical Industries, Ltd.)] 28% by weight aqueous solution of sodium polyoxyethylene lauryl ether acetate (4EO) [Product name: Viewlite LCA-25N {manufactured by Sanyo Chemical Industries, Ltd.}] 29% by weight aqueous solution of sodium lauryl glycol carboxylate [product name: Viewlite SHAA {manufactured by Sanyo Chemical Industries, Ltd.}] 29% by weight aqueous solution of sodium cocoyl glutamate [trade name: Plantapon Amino SCG-L {manufactured by BASF (Plantapon is a registered trademark of Cognis IP Management Gesellschaft mit Beschlenkter Haftung)}] 30% by weight aqueous solution of TEA-lauroyl glutamate [product name: Amisoft LT-12 {manufactured by Ajinomoto Healthy Supply Co., Ltd. (Amisoft is a registered trademark of Ajinomoto Co., Ltd.)] 30% by weight aqueous solution of N-lauroyl sarcosinate sodium [trade name: Soypon SLE {manufactured by Kawaken Fine Chemicals Co., Ltd. (Soypon is a registered trademark of Kawaken Fine Chemicals Co., Ltd.)] Coconut oil fatty acid glycine potassium [product name: Amirite GCK-11 {manufactured by Ajinomoto Healthy Supply Co., Ltd. (Amirite is a registered trademark of Ajinomoto Co., Inc.)] 37% by weight aqueous solution of sodium olefin (carbon number 14-16) sulfonate [trade name: Liporan LJ-441 {manufactured by Lion Corporation (Liporan is a registered trademark of Lion Specialty Chemicals Co., Ltd.)] 30% by weight aqueous solution of cocamidopropyl betaine [product name: Levon HC-30W {manufactured by Sanyo Chemical Industries, Ltd.}] 43% by weight aqueous solution of sodium cocoamphoacetate [product name: Levon CIB {manufactured by Sanyo Chemical Industries, Ltd.}] Lauric acid [product name: NAA-122 {manufactured by NOF Corporation (NAA is a registered trademark of NOF Corporation)] Stearic acid [product name: NAA-172 {manufactured by NOF Corporation}] Palmitic acid [product name: NAA-160 {manufactured by NOF Corporation}] BG [1,3-butylene glycol, manufactured by Nacalai Tesque, Inc.] Glycerin [Product name: Concentrated glycerin for cosmetics {manufactured by Kao Corporation}] Polyquaternium-22 (40% aqueous solution) [Product name: MERQUAT 280 {manufactured by Lubrizol (MERQUAT is a registered trademark of Lubrizol Advanced Materials, Inc.)] Polyquaternium-7 (9% aqueous solution) [Product name: MERQUAT 550 (manufactured by Lubrizol)] Polyquaternium-10 [Product name: Sensomer 10M Polymer (manufactured by Lubrizol)] Dimethicone [Product name: KF-96A-2CS {Shin-Etsu Chemical Co., Ltd.}] Vitamin E [product name: D-α-tocopherol {manufactured by Tokyo Chemical Industry Co., Ltd.}] ·EDTA 2Na [Product name: 2NA (EDTA 2Na) {manufactured by Dojindo Kagaku Kenkyusho Co., Ltd.}] Coconut oil fatty acid N-methylethanolamide [product name: Aminone C-11S {manufactured by Kao Corporation (Aminone is a registered trademark of Kao Corporation)] PEG-160 sorbitan triisostearate [product name: Rheodor TW-IS399C {manufactured by Kao Corporation (Rheodor is a registered trademark of Kao Corporation)] PEG-190 distearate [product name: Emulmin 862 {manufactured by Sanyo Chemical Industries, Ltd. (Emulmin is a registered trademark of Sanyo Chemical Industries, Ltd.)] Glycol distearate [product name: EMALEX EG-di-S {manufactured by Nippon Emulsion Co., Ltd. (EMALEX is a registered trademark of Nippon Emulsion Co., Ltd.)] Menthol [Product name: l-Menthol {Fujifilm Wako Pure Chemical Industries, Ltd.}] Citric acid [Fujifilm Wako Pure Chemical Industries, Ltd.] Potassium hydroxide [Nacalai Tesque, Inc.]

[0179] <Examples 18 to 21 and Comparative Examples 7 and 8> The cosmetic surfactant compositions obtained in Examples 1 to 8 and the comparative cosmetic surfactant compositions obtained in Comparative Examples 1 and 2 were mixed with other component (C) described below in the charging ratios shown in Tables 6 and 7 to prepare skin care cosmetics (lotion, cream, hand cream, and cleansing oil) according to the present invention in Examples 18 to 21, and comparative skin care cosmetics (hand cream and cleansing oil) in Comparative Examples 7 and 8. In Tables 6 and 7, the numbers in parentheses are the values ​​of the components (sometimes called active ingredients) remaining after removing water from each raw material.

[0180] [Table 6]

[0181] [Table 7]

[0182] As other components (C) shown in Tables 6 and 7, the following were used. <Skin care cosmetics> Isoprene diol [isoprene glycol {manufactured by Kuraray Co., Ltd.}] Glycerin [Product name: Concentrated glycerin for cosmetics {manufactured by Kao Corporation}] BG [1,3-butylene glycol, manufactured by Nacalai Tesque, Inc.] Ethanol [Fujifilm Wako Pure Chemical Industries, Ltd.] Xanthan gum [manufactured by Jungbunzlauer International AG] Sodium hyaluronate [Product name: Hyaluronic acid FCH-120 {Kikkoman Biochemifa Corporation}] Sodium acrylate-grafted starch [product name: Saranjur ST-100MC {manufactured by Sanyo Chemical Industries, Ltd. (Saranjur is a registered trademark of Sanyo Chemical Industries, Ltd.)] Vitamin E [product name: D-α-tocopherol {manufactured by Tokyo Chemical Industry Co., Ltd.}] Behenyl alcohol [Kyushu Alcohol Kogyo Co., Ltd.] Stearyl alcohol [product name: Hynole 18SS {manufactured by Kokyu Alcohol Kogyo Co., Ltd. (Hynole is a registered trademark of Kokyu Alcohol Kogyo Co., Ltd.)] Stearic acid [product name: NAA-172 {manufactured by NOF Corporation}] Isostearic acid [product name: Isostearic Acid EX {manufactured by Kokyu Alcohol Kogyo Co., Ltd.}] Caprylic / capric triglyceride [product name: TCG-M {manufactured by Kokyu Alcohol Kogyo Co., Ltd.}] Dipentaerythrityl hexahydroxystearate / hexastearate / hexarosinate [trade name: Cosmol 168ARV {manufactured by Nisshin Oillio Group, Ltd. (Cosmol is a registered trademark of Nisshin Oillio Group, Ltd.)] Jojoba oil [Product name: Deodorized Jojoba Oil M {Made by Watahan Trading Co., Ltd.}] Ethylhexyl palmitate [Product name: Koyo POC {manufactured by Koyo Fine Chemical Co., Ltd.}] Shea butter [Product name: Refined shea butter {manufactured by Tree of Life Co., Ltd.}] Triethylhexanoin [TIO (manufactured by Nisshin Oillio Group, Ltd.)] Hydrogenated rapeseed oil alcohol [product name: Alcohol No. 20-B {manufactured by Kokyu Alcohol Kogyo Co., Ltd.}] Dimethicone [Product name: KF-96A-2CS {Shin-Etsu Chemical Co., Ltd.}] Cyclopentasiloxane [Product name: KF-995 {manufactured by Shin-Etsu Chemical Co., Ltd.}] Mineral oil [Product name: Carnation {manufactured by Sonneborn LLC (Carnation is a registered trademark of Sonneborn LLC)] PEG-60 hydrogenated castor oil [product name: HCO-60 {manufactured by Nikko Chemicals Co., Ltd.}] PPG-2 Ceteth-12 [Product name: Alpha Pure HSG {manufactured by Sanyo Chemical Industries, Ltd. (Alpha Pure is a registered trademark of Sanyo Chemical Industries, Ltd.)] PEG-190 distearate [product name: Emulmin 862 {manufactured by Sanyo Chemical Industries, Ltd. (Emulmin is a registered trademark of Sanyo Chemical Industries, Ltd.)] Sorbitan oleate [trade name: Ionet S-80 {manufactured by Sanyo Chemical Industries, Ltd. (Ionet is a registered trademark of Sanyo Chemical Industries, Ltd.)] PEG-9 oleate [product name: IONET MO-400 {manufactured by Sanyo Chemical Industries, Ltd.}] Setores-5 [Product name: Emulmin 50 {manufactured by Sanyo Chemical Industries, Ltd.}] Phenoxyethanol [Product name: Newpol EFP {manufactured by Sanyo Chemical Industries, Ltd. (Newpol is a registered trademark of Sanyo Chemical Industries, Ltd.)] Methylparaben [Product name: Microcare MHB {manufactured by Thor Japan Co., Ltd. (Microcare is a registered trademark of Thor Specialties (UK) Limited)}]

[0183] <Examples 22 and 23 and Comparative Examples 9 and 10> The cosmetic surfactant compositions obtained in Examples 1 to 8 and the comparative cosmetic surfactant compositions obtained in Comparative Examples 1 and 2 were mixed with other component (C) described below in the charging ratios shown in Table 8 to prepare hair care cosmetics (conditioner and non-cationic conditioner) according to the present invention of Examples 22 and 23, and comparative hair care cosmetics (conditioner and non-cationic conditioner) according to Comparative Examples 9 and 10. In Table 8, the numbers in parentheses are the values ​​of the components (sometimes called active ingredients) remaining after removing water from each raw material.

[0184] [Table 8]

[0185] As other components (C) shown in Table 8, the following were used. Glycerin [Product name: Concentrated glycerin for cosmetics {manufactured by Kao Corporation}] BG [1,3-butylene glycol, manufactured by Nacalai Tesque, Inc.] Ethanol [Fujifilm Wako Pure Chemical Industries, Ltd.] Behentrimonium chloride [product name: VARISOFT BT 85 Pellets {manufactured by Evonik Operations GmbH (VARISOFT is a registered trademark of Evonik Goldschmidt Corporation)] Cetearyl alcohol [product name: Conol 1668 {manufactured by New Japan Chemical Co., Ltd. (Conol is a registered trademark of New Japan Chemical Co., Ltd.)] Cetyl alcohol [product name: Cetanol {manufactured by Kokyu Alcohol Kogyo Co., Ltd.}] Shea butter [Product name: Refined shea butter {manufactured by Tree of Life Co., Ltd.}] Glyceryl stearate [product name: TG-C {manufactured by Sanyo Chemical Industries, Ltd.}] Dimethicone [Product name: KF-96A-2CS {Shin-Etsu Chemical Co., Ltd.}] Mineral oil [Product name: Carnation {manufactured by Sonneborn LLC}] Hydroxypropyl methylcellulose [product name: Metolose for food additives {manufactured by Shin-Etsu Chemical Co., Ltd.}] Xanthan gum [manufactured by Jungbunzlauer International AG] Phenoxyethanol [Product name: Newpol EFP {manufactured by Sanyo Chemical Industries, Ltd.}]

[0186] <Examples 24 and 25 and Comparative Examples 11 and 12> The cosmetic surfactant compositions obtained in Examples 1 to 8 and the comparative cosmetic surfactant compositions obtained in Comparative Examples 1 and 2 were mixed with other component (C) described below in the charging ratios shown in Table 7 to prepare styling agents (hair gel and hair spray) that are cosmetics of the present invention according to Examples 24 and 25, and comparative styling agents (hair gel and hair spray) according to Comparative Examples 11 and 12. In Table 9, the numbers in parentheses are the values ​​of the components (sometimes called active ingredients) remaining after removing water from each raw material.

[0187] [Table 9]

[0188] As other components (C) shown in Table 9, the following were used. Glycerin [Product name: Concentrated glycerin for cosmetics {manufactured by Kao Corporation}] Denatured alcohol [product name: Neoethanol {manufactured by Taishin Chemical Co., Ltd.}] Carbomer [Product name: NTC-CARBOMER 380 {manufactured by Nikko Chemicals Co., Ltd.}] Dipentaerythrityl hexahydroxystearate / hexastearic acid / hexarosinate [product name: Cosmol 168ARV] Squalane [Fujifilm Wako Pure Chemical Industries, Ltd.] Candelilla wax [Product name: Refined Candelilla Wax MK-2 {manufactured by Yokoseki Oil Industries Co., Ltd.}] Mineral oil [Product name: Carnation {manufactured by Sonneborn LLC}] Beeswax [Product name: Refined Beeswax CY-100 {manufactured by Yokozeki Oil Industries Co., Ltd.}] PPG-34 [Product name: Newpol PP-2000 {manufactured by Sanyo Chemical Industries, Ltd.}] PPG-7-Butes-10 [Product name: Newpol 50HB-260 {manufactured by Sanyo Chemical Industries, Ltd.}] PEG-60 hydrogenated castor oil [product name: HCO-60 {manufactured by Nikko Chemicals Co., Ltd.}] Laureth-7 [Product name: Emulmin NL-70 {manufactured by Sanyo Chemical Industries, Ltd.}] PEG-400 [Product name: PEG-20000 {manufactured by Sanyo Chemical Industries, Ltd.}] Potassium hydroxide [Nacalai Tesque, Inc.] Vinylpyrrolidone / VA copolymer [trade name: Rubiscol VA64P {manufactured by BASF Ltd. (Ruviscol is a registered trademark of BASF Societas Europea)}] PEG-12 Dimethicone [Product name: DOWSIL SS-2804 {manufactured by Dow Toray Industries, Inc. (DOWSIL is a registered trademark of The Dow Chemical Company)}] Phenoxyethanol [Product name: Newpol EFP {manufactured by Sanyo Chemical Industries, Ltd.}]

[0189] <Examples 26 and 27 and Comparative Examples 13 and 14> The cosmetic surfactant compositions obtained in Examples 1 to 8 and the comparative cosmetic surfactant compositions obtained in Comparative Examples 1 and 2 were mixed with other component (C) described below in the charging ratios shown in Table 10 to prepare UV care cosmetics (creams and gels) according to the present invention as claimed in Examples 26 and 27, and comparative UV care cosmetics (creams and gels) as claimed in Comparative Examples 13 and 14. In Table 10, the numbers in parentheses are the values ​​of the components (sometimes called active ingredients) remaining after removing water from each raw material.

[0190] [Table 10]

[0191] As other components (C) shown in Table 10, the following were used. Titanium dioxide [Product name: MICRO TITANIUM DIOXIDE MT-100TV {manufactured by Teika Corporation}] Zinc oxide [Product name: MICRO ZINC OXIDE MZ-300 {manufactured by Teika Co., Ltd.}] Diisostearyl malate [product name: Cosmol 222 {manufactured by Nisshin Oillio Group, Ltd.}] Caprylic / capric triglyceride [product name: MIGLYOL 812N {manufactured by IOI OLEOCHEMICAL GmbH (MIGLYOL is a registered trademark of KRAMER OLEO GESELLSCHAFT MIT BESHLENKTEL HAFZUNG und Kommandietgesellschaft)] PPG-2 Ceteth-12 [Product name: Alpha Pure HSG {manufactured by Sanyo Chemical Industries, Ltd.}] Ethylhexyl methoxycinnamate [trade name: Uvinul MC80 {manufactured by BASF Ltd. (Uvinul is a registered trademark of BASF Societas Europea)}] t-Butyl methoxydibenzoylmethane [trade name: Escalol 517 {manufactured by Asuland (Escalol is a registered trademark of ISP Investments, Inc.)] Ethylhexyl palmitate [Product name: Koyo POC {manufactured by Koyo Fine Chemical Co., Ltd.}] Behenyl alcohol [Kyushu Alcohol Kogyo Co., Ltd.] Isostearic acid [product name: Isostearic Acid EX {manufactured by Kokyu Alcohol Kogyo Co., Ltd.}] Stearic acid [product name: NAA-172 {manufactured by NOF Corporation}] Dimethicone [Product name: KF-96A-2CS {Shin-Etsu Chemical Co., Ltd.}] Glycerin [Product name: Concentrated glycerin for cosmetics {manufactured by Kao Corporation}] Isoprene diol [isoprene glycol {manufactured by Kuraray Co., Ltd.}] Carbomer [Product name: NTC-CARBOMER 380 {manufactured by Nikko Chemicals Co., Ltd.}] Xanthan gum [manufactured by Jungbunzlauer International AG] Phenoxyethanol [Product name: Newpol EFP {manufactured by Sanyo Chemical Industries, Ltd.}] Potassium hydroxide [Nacalai Tesque, Inc.] Citric acid [Fujifilm Wako Pure Chemical Industries, Ltd.]

[0192] <Examples 28 to 31 and Comparative Examples 15 and 16> The cosmetic surfactant compositions obtained in Examples 1 to 8 and the comparative cosmetic surfactant compositions obtained in Comparative Examples 1 and 2 were mixed with other component (C) described below in the charging ratios shown in Tables 11 and 12 to prepare wipe-off cosmetics (masks, makeup remover sheets, sweat wipe sheets, and hair wipe sheets) according to the present invention, which are the cosmetics of Examples 28 to 31, and comparative wipe-off cosmetics (masks, makeup remover sheets) according to Comparative Examples 15 and 16. In Tables 11 and 12, the numbers in parentheses are the values ​​of the components (sometimes called active ingredients) remaining after removing water from each raw material.

[0193] [Table 11]

[0194] [Table 12]

[0195] As other components (C) shown in Tables 11 and 12, the following were used. Isoprene diol [isoprene glycol {manufactured by Kuraray Co., Ltd.}] Glycerin [Product name: Concentrated glycerin for cosmetics {manufactured by Kao Corporation}] BG [1,3-butylene glycol, manufactured by Nacalai Tesque, Inc.] Ethanol [Fujifilm Wako Pure Chemical Industries, Ltd.] Xanthan gum [manufactured by Jungbunzlauer International AG] Sodium hyaluronate [Product name: Hyaluronic acid FCH-120 {Kikkoman Biochemifa Corporation}] Tranexamic acid [Fujifilm Wako Pure Chemical Industries, Ltd.] Vitamin E [product name: D-α-tocopherol {manufactured by Tokyo Chemical Industry Co., Ltd.}] PEG-60 hydrogenated castor oil [product name: HCO-60 {manufactured by Nikko Chemicals Co., Ltd.}] PEG-9 oleate [product name: IONET MO-400 {manufactured by Sanyo Chemical Industries, Ltd.}] Setores-5 [Product name: Emulmin 50 {manufactured by Sanyo Chemical Industries, Ltd.}] Phenoxyethanol [Product name: Newpol EFP {manufactured by Sanyo Chemical Industries, Ltd. (Newpol is a registered trademark of Sanyo Chemical Industries, Ltd.)] Menthol [Product name: l-Menthol {Fujifilm Wako Pure Chemical Industries, Ltd.}] Isopropylmethylphenol [trade name: Biosol {manufactured by Osaka Kasei Co., Ltd. (Biosol is a registered trademark of Osaka Kasei Co., Ltd.)]

[0196] The cosmetics of Examples 9 to 31 and Comparative Examples 4 to 16 were evaluated for bacteriostasis against Escherichia coli, Staphylococcus aureus, Aspergillus niger and Propionibacterium acnes, as well as skin moisturizing properties, using the methods described below. The results are shown in Table 13.

[0197] The amounts of NMF components eluted from the cosmetics of Examples 9 to 17 and Comparative Examples 4 to 6 were measured, and the results are shown in Table 13.

[0198] [Table 13]

[0199] <Bacteriostatic against E. coli> The bacteriostatic properties against Escherichia coli were evaluated in a preservative effectiveness test detailed below. A 1-L volumetric flask was charged with 30 g of "Daigo" Soybean Casein Digest Medium (Fujifilm Wako Pure Chemical Corporation) and 14 g of agar powder (Fujifilm Wako Pure Chemical Corporation). The mixture was then brought to 1 L with ion-exchanged water and sterilized in an autoclave (BACcT Autoclave KTS-2322, Japan Bacteriological Inspection Co., Ltd.) at 120°C to prepare the medium. The sterilized medium was dispensed in 15 mL aliquots into sterile petri dishes (IWAKI) and left at room temperature for approximately 30 minutes to solidify the agar medium. Escherichia coli (NRBC strain, National Institute of Technology and Evaluation) was then smeared onto the resulting agar medium and cultured with shaking at 37°C for 24 hours to allow the formation of E. coli colonies. A liquid medium was prepared by adding 30 g of "Daigo" Soybean Casein Digest Medium (Fujifilm Wako Pure Chemical Industries, Ltd.) to a 1 L volumetric flask and diluting it to 1 L with ion-exchanged water. 10 mL of the prepared liquid medium was placed in a centrifuge tube (15 mL conical centrifuge tube (AS ONE Corporation)). A single colony of E. coli collected from an agar medium was mixed with the liquid medium in the centrifuge tube, and the E. coli colony was suspended in the liquid medium to prepare a suspension. The resulting suspension was incubated with shaking at 37°C for 1 day. The cultured suspension was centrifuged at 3000 rpm for 15 minutes. The supernatant liquid medium of the centrifuged suspension was discarded, and 5 mL of saline (0.9 wt% saline) was added to the remaining residue and stirred with a vortex mixer (manufactured by AS ONE Corporation). The mixture was then centrifuged again at 3000 rpm for 15 minutes. After centrifugation, the supernatant liquid medium was discarded, and 5 mL of saline (0.9 wt% saline) was added to the remaining residue and stirred with a vortex mixer (manufactured by AS ONE Corporation). This was used as the E. coli bacterial suspension. 10 mL of each of the cosmetics of Examples 9 to 31 and Comparative Examples 4 to 16 was placed in a container sterilized in an autoclave (BACcT Autoclave KTS-2322, manufactured by Nihon Bacteri Kensatu Co., Ltd.) and sterilized in a water bath at 80°C for 1 hour. 100 μL of Escherichia coli solution was added and mixed by shaking, and then allowed to stand for 1.5 hours. After standing, the solution was diluted 10 times and 10 times with sterilized ionized water. 3 The solution was diluted 1:1 and 50 μL was applied to an agar medium and cultured at 37°C for 24 hours. Immediately after 24 hours of culture, the number of bacterial colonies present on the agar medium (number of bacteria on the first day of culture) was counted. Immediately after 24 hours of culture, the agar medium was left to stand at 37°C for a further 27 days, and the number of bacterial colonies present on the agar medium (number of bacteria on the 28th day) was counted. The logarithmic reduction value, which indicates the reduction in the number of bacteria on the 28th day compared to the number on the first day, was calculated, and the results are shown in Table 13. In Table 13, when the bacteriostasis is listed as 3.0, it means that the logarithmic reduction value is 3.0, and when the number of live bacteria is 10 3 This means that the number of people has decreased to one-thousandth of the original number.

[0200] <Bacteriostatic against Staphylococcus aureus> The bacteriostasis was evaluated in the same manner as for Escherichia coli, except that the bacteria used was changed to Staphylococcus aureus (NRBC strain obtained from the National Institute of Technology and Evaluation), and the results are shown in Table 13.

[0201] <Bacteriostatic against Aspergillus niger> The bacteriostatic activity against Aspergillus niger was evaluated in a preservative effectiveness test detailed below. 39 g of Potato Dextrose Agar Medium "Daigo" Japanese Pharmacopoeia Test Grade (Fujifilm Wako Pure Chemical Industries, Ltd.) was placed in a 1 L measuring flask, and the flask was filled up to 1 L with ion-exchanged water. The flask was then sterilized in an autoclave (BACcT Autoclave KTS-2322, Japan Bacteriological Inspection Co., Ltd.) at 120°C. The sterilized medium was dispensed into sterilized petri dishes (manufactured by IWAKI) in 15 mL portions and left at room temperature for about 30 minutes to prepare solidified agar medium. After sterilization, 10 mL of the medium was poured into test tubes and allowed to solidify at an angle at room temperature for approximately 30 minutes to create solidified slant agar plates. Aspergillus niger (NRBC strain obtained from the National Institute of Technology and Evaluation) was streaked onto the surface of the slant agar plates ("streaking" means inoculating the medium by drawing a line on the slant agar plates), and the plates were left to stand at 30°C for 7 days to cultivate Aspergillus niger on the slant agar plates. 0.015 g of polysorbate 80 (Ionet T-80V, manufactured by Sanyo Chemical Industries, Ltd.), 0.270 g of salt, and 29.716 g of ion-exchanged water were added to a 50 mL beaker and mixed uniformly to prepare 30 mL of 0.05 wt % polysorbate saline. 5 mL of 0.05 wt % polysorbate saline was added to the slant agar medium on which Aspergillus niger had been cultured, and the mixture was stirred with a platinum loop to prepare an Aspergillus niger fungal solution. 10 mL of the cosmetics of Examples 9 to 31 and Comparative Examples 4 to 16 were placed in a container sterilized with an autoclave (BACcT autoclave KTS-2322, manufactured by Japan Bacteriological Inspection Co., Ltd.), and the cosmetics of Examples 9 to 31 and Comparative Examples 4 to 16 were sterilized by leaving the cosmetics in an 80°C water bath for 1 hour. 100 μL of Aspergillus niger fungal solution was added to each of the sterilized cosmetics of Examples 9 to 31 and Comparative Examples 4 to 16, and the mixture was shaken and left to stand for 1.5 hours. After leaving the solution to stand, the solution was diluted 10 times and 10 times with ion-exchanged water sterilized with an autoclave (BACcT autoclave KTS-2322, manufactured by Japan Bacteriological Inspection Co., Ltd.). 3Dilute it by a factor of two, apply 50 μL to an agar medium solidified in a sterilized petri dish, incubate at 30 °C for 24 hours, and count the number of bacterial colonies (the number of bacteria on the first day of culture) present on the agar medium immediately after 24 hours of culture. Starting immediately after 24 hours of culture, count the number of bacterial colonies (the number of bacteria on the 28th day) present on the agar medium after standing at 30 °C for an additional 27 days. The logarithmic reduction value indicating how much the number of bacteria on the 28th day decreased compared to the number of bacteria on the first day was calculated, and the results are shown in Table 13.

[0202] <Bacteriostatic effect against acne bacteria> The bacteriostatic effect against acne bacteria was evaluated in the same manner as the bacteriostatic effect against Escherichia coli, except that the bacterium used was changed to acne bacteria [NRBC strain obtained from the National Institute of Technology and Evaluation].

[0203] <Elution amount of NMF components> A total of 20 Japanese men and women aged 20 to 50 years were used as subjects, and the total amount removed by the cosmetic of the present application example was measured for three components, urocanic acid, pyrrolidone carboxylic acid, and lactic acid, which are NMF components, and the elution amount of the NMF components was determined. A solution obtained by diluting the shampoo of Example 9 by a factor of 10 with ion-exchanged water was prepared as a test cleaning agent. The opening of a screw tube No. 5 (manufactured by Maruem Co., Ltd.) containing 2 mL of the test cleaning agent was placed on the inner side of the left forearm of the subject, and the right arm was used to hold it so that the solution would not spill. Next, the left forearm of the subject was placed on a digital shaker (manufactured by DLAB) so that the solution would not leak, and shaken at a speed of 100 to 120 (reciprocations / minute) for 10 minutes to extract the soluble components on the inner surface of the left forearm into the test cleaning agent. The test cleaning agent after extraction of the soluble components was filtered through a 0.45 μm membrane filter, and the filtrate was measured by high performance liquid chromatography under the following conditions, and the amounts of urocanic acid, pyrrolidone carboxylic acid, and lactic acid were calculated using the calibration curve method, and the values of the three components were summed. The average value of the 20 subjects for the total value of the three components was calculated and shown in Table 13. The shampoos of Examples 10 to 14 and Comparative Examples 4 to 6, as well as the facial cleansers of Examples 15 to 17, were also evaluated in the same manner. The evaluation results are shown in Table 13.

[0204] <Moisturizing properties> The moisture content of the stratum corneum was measured after use of each cosmetic product using the method described below, and moisturizing properties were evaluated. The higher the moisture content of the stratum corneum, the better the moisturizing properties.

[0205] <Moisturizing properties of hair cleansers (shampoos)> A total of 20 Japanese male and female subjects, aged between 20 and 50, thoroughly wetted their hair with 40°C water, washed their scalp with 1g of hair cleanser (shampoo), rinsed thoroughly with 40°C water, and then dried their hair with a hair dryer for 5 minutes, repeating this process once a day for 14 days. On the 14th day of use, two hours after washing the scalp, the moisture content of the keratinocyte of the scalp was measured at three random locations using a Corneometer [product name: Corneometer CM825 {manufactured by Courage + Khazaka (Corneometer is a registered trademark of Courage + Khazaka Electronic GmbH)}], and the average value was calculated. The same test was performed on each of the hair cleansers (shampoos) of Examples 9 to 14 and Comparative Examples 4 to 6, and the average values ​​for all 20 subjects calculated based on the average values ​​calculated for each subject are shown in Table 13.

[0206] <Moisturizing properties of facial cleansers (pump foam cleanser and cream cleanser)> A total of 20 Japanese men and women aged between 20 and 50 years old thoroughly wet their faces with 40°C hot water, then washed their faces with 1g of facial cleanser (pump foam cleanser and cream cleanser), rinsed thoroughly with 40°C hot water, and towel-dried for 5 minutes, repeating this process once a day for 14 days. On the 14th day after starting use, two hours after five minutes of towel drying, the moisture content of the keratinocytes above the cheekbones was measured at three random locations using a Corneometer (product name: Corneometer CM825 {manufactured by Courage+Khazaka}), and the average value was calculated. The same test was performed on each of the facial cleansers of Examples 15 to 17 (pump foam facial cleanser and cream facial cleanser), and the average values ​​for all 20 subjects calculated based on the average values ​​calculated for each subject are shown in Table 13.

[0207] <Moisturizing properties of skin care cosmetics (lotions, creams, hand creams, and cleansing oils)> A total of 20 Japanese male and female subjects aged between 20 and 50 years applied 0.5g of skin care cosmetics (lotion, cream, hand cream, and cleansing oil) to their faces once a day for 14 days. Two hours after application on the 14th day of use, the moisture content of the keratinocytes above the cheekbones was measured at three random locations using a Corneometer [product name: Corneometer CM825 {manufactured by Courage+Khazaka}], and the average value was calculated. The same test was performed on each of the skin care cosmetics (lotion, cream, hand cream, and cleansing oil) of Examples 18 to 21 and Comparative Examples 7 to 8, and the average values ​​for all 20 subjects calculated based on the average values ​​calculated for each subject are shown in Table 13.

[0208] <Moisturizing properties of hair care cosmetics (conditioners and non-cationic conditioners)> A total of 20 Japanese male and female subjects, aged 20 to 50, thoroughly wetted their hair with 40°C hot water, washed it with 1 g of a 10 wt% diluted aqueous solution of polyoxyethylene (degree of polymerization 2) lauryl ether sodium sulfate [EMAL 20C, manufactured by Kao Corporation (EMAL is a registered trademark of Kao Corporation)], and rinsed it thoroughly with 40°C hot water. Next, 1 g of hair care cosmetics (conditioner and non-cationic conditioner) was evenly applied to the hair, blended into the entire hair, rinsed thoroughly with 40°C hot water, and then dried for 5 minutes with a hair dryer. The aforementioned process of washing the hair, applying the hair care cosmetics (conditioner and non-cationic conditioner), rinsing, and drying was repeated once a day for 14 days. Two hours after drying on the 14th day of use, the horny moisture content of the scalp was randomly measured at three locations using a corneometer [product name: Corneometer CM825 {manufactured by Courage + Khazaka}], and the average value was calculated. For each of the hair care cosmetics (conditioners and non-cationic conditioners) of Examples 22 to 23 and Comparative Examples 9 to 10, the same test was conducted, and the average value for 20 subjects in total was calculated based on the average value calculated for each subject and is shown in Table 13.

[0209] <Moisturizing property of styling agents (hair gels and hair sprays)> A total of 20 Japanese subjects, 10 men and 10 women aged 20 to 50, repeated setting their hair using styling agents (hair gels and hair sprays) once a day for 14 days. Two hours after setting the scalp 14 days after the start of use, the horny moisture content of the scalp was randomly measured at three locations using a corneometer [product name: Corneometer CM825 {manufactured by Courage + Khazaka}], and the average value was calculated. For each of the styling agents (hair gels and hair sprays) of Examples 24 to 25 and Comparative Examples 11 to 12, the same test was conducted, and the average value for 20 subjects in total was calculated based on the average value calculated for each subject and is shown in Table 13.

[0210] <Moisturizing property of UV care cosmetics (creams and gels)> A total of 20 Japanese subjects, 10 men and 10 women aged 20 to 50, repeated applying 0.5 g of UV care cosmetics (creams and gels) to their faces once a day for 14 days. Two hours after application on the 14th day of use, the horny moisture content above the cheekbones was randomly measured at three locations using a corneometer [product name: Corneometer CM825 {manufactured by Courage + Khazaka}], and the average value was calculated. The same test was performed on each of the UV care cosmetics (creams and gels) of Examples 26 to 27 and Comparative Examples 13 to 14, and the average values ​​for all 20 subjects calculated based on the average values ​​calculated for each subject are shown in Table 13.

[0211] <Moisturizing properties of wipe-off cosmetics (masks)> A total of 20 Japanese men and women aged between 20 and 50 years old were asked to use a wipe-off cosmetic pack for 10 minutes once a day for 14 days. Two hours after applying the pack on the 14th day of use, the moisture content of the keratinocytes above the cheekbones was measured at three random locations using a Corneometer [product name: Corneometer CM825 {manufactured by Courage+Khazaka}], and the average value was calculated. The same test was performed on each of the wipe-off cosmetics (packs) of Example 29 and Comparative Example 15, and the average values ​​for all 20 subjects calculated based on the average values ​​calculated for each subject are shown in Table 13.

[0212] <Moisturizing properties of wipe-off cosmetics (makeup remover sheets and sweat wipe sheets)> A total of 20 Japanese male and female subjects, aged between 20 and 50, wiped their faces with cosmetic wipes (makeup remover sheets and sweat wipe sheets) once a day for 14 days. Two hours after wiping on the 14th day of use, the moisture content of the keratinocytes above the cheekbones was measured at three random locations using a Corneometer [product name: Corneometer CM825 {manufactured by Courage+Khazaka}], and the average value was calculated. The same test was performed on each of the wipe cosmetics (makeup remover sheets and sweat wipe sheets) of Examples 29 to 30 and Comparative Example 16, and the average values ​​for all 20 subjects calculated based on the average values ​​calculated for each subject are shown in Table 13.

[0213] <Moisturizing properties of wipe-off cosmetics (hair wipe sheets)> A total of 20 Japanese male and female subjects aged between 20 and 50 wiped their hair with the wipe cosmetic composition (hair wipe sheet) of Example 31 once a day for 14 days. On the 14th day of use, two hours after wiping the hair, the moisture content of the scalp keratinocyte was measured at three random locations using a Corneometer [product name: Corneometer CM825 {manufactured by Courage+Khazaka}], and the average value was calculated. The average values ​​for all 20 subjects calculated based on the average values ​​calculated for each subject are shown in Table 13.

[0214] The cosmetics of Examples 9, 16 and 18 were used for 8 days, and the balance of the normal skin flora before and after use was evaluated. The balance of the normal skin flora was evaluated using the Simpson Index, which was calculated using the ratio of the number of Propionibacterium acnes, Staphylococcus epidermidis, and Corynebacterium spp. bacteria (referred to as relative priority) based on the total number of bacteria in the normal skin flora using the following formula. The calculated Simpson Index is shown in Table 14. The maximum value of the Simpson index is 1, and a larger value indicates a greater diversity of resident bacteria and a better state of resident bacterial flora. <Calculation formula for the Simpson Index> Simpson index = 1 - (square of the relative priority of P. acnes + square of the relative priority of Staphylococcus epidermidis + square of the relative priority of Corynebacterium spp.)

[0215] [Table 14]

[0216] <Changes in the balance of the skin's resident flora due to the use of hair cleansers (shampoo)> Two subjects, a woman in her 20s and a man in his 40s, thoroughly wetted their hair with 40°C water, washed their scalp with 1 g of the hair cleanser (shampoo) of Example 9, rinsed thoroughly with 40°C water, and then dried their hair for 5 minutes with a hair dryer. This process was repeated once a day for 8 days. Samples of the resident skin flora were collected from the hairline of the subjects on the first day before using the hair cleanser (shampoo) and on the eighth day after using the hair cleanser (shampoo). The collected skin flora was subjected to genetic analysis to calculate the relative priorities of P. acnes, Staphylococcus epidermidis, and Corynebacterium sp. relative to the total number of bacteria contained in the collected skin flora. The Simpson index was then calculated before use of the hair cleanser (shampoo) on the first day and after use of the hair cleanser (shampoo) on the eighth day, and the values ​​are shown in Table 14. Sampling of the resident skin flora was performed using the MySkinKit microbial collection kit manufactured by TAK-Circulator Co., Ltd. (MySkin is a registered trademark of TAK-Circulator Co., Ltd.), and analysis of the resident skin flora was outsourced to TAK-Circulator Co., Ltd.

[0217] <Changes in the balance of the skin's resident flora due to the use of facial cleansers (pump-former cleanser and cream cleanser)> Two subjects, a woman in her 20s and a man in his 40s, each thoroughly wetted their faces with 40°C hot water, washed their faces with 1 g of the facial cleansers of Example 16 (pump foam facial cleanser and cream facial cleanser), rinsed thoroughly with 40°C hot water, and then wiped their faces dry with a towel. This process was repeated once a day for eight days. Samples of the resident skin flora were collected from the subjects' foreheads before using the facial cleansers (pump foam facial cleanser and cream facial cleanser) on the first day and after using the facial cleansers (pump foam facial cleanser and cream facial cleanser) on the eighth day, and were used for evaluation. The collected skin flora was subjected to genetic analysis to calculate the relative priority of each of Propionibacterium acnes, Staphylococcus epidermidis, and Corynebacterium spp. relative to the total number of bacteria contained in the collected skin flora. The Simpson index was then calculated before using the facial cleansers (pump foam facial cleanser and cream facial cleanser) on the first day and after using the facial cleansers (pump foam facial cleanser and cream facial cleanser) on the eighth day, and the results are shown in Table 14. Sampling of the resident skin flora was performed using the MySkinKit microbial collection kit manufactured by TAK-Circulator Co., Ltd. (MySkin is a registered trademark of TAK-Circulator Co., Ltd.), and analysis of the resident skin flora was outsourced to TAK-Circulator Co., Ltd.

[0218] <Changes in the balance of the skin's resident flora due to the use of skin care cosmetics (lotions)> Two subjects, a woman in her 20s and a man in his 40s, each applied 0.5 g of the skin care cosmetic (lotion) of Example 18 to their faces once a day, repeatedly every day. Samples of the resident skin flora were collected from the subjects' faces before application of the skin care cosmetic (lotion) on day 1 and after application of the skin care cosmetic (lotion) on day 8, and were used as evaluation subjects. The collected skin flora was subjected to genetic analysis to calculate the relative priority of each of Propionibacterium acnes, Staphylococcus epidermidis, and Corynebacterium sp. bacteria relative to the total number of bacteria contained in the collected skin flora. The Simpson's index was then calculated before application of the skin care cosmetic (lotion) on day 1 and after application of the skin care cosmetic (lotion) on day 8, and the results are shown in Table 14. Sampling of the resident skin flora was performed using the MySkinKit microbial collection kit manufactured by TAK-Circulator Co., Ltd. (MySkin is a registered trademark of TAK-Circulator Co., Ltd.), and analysis of the resident skin flora was outsourced to TAK-Circulator Co., Ltd.

[0219] As is clear from Table 13, the cosmetics (Examples 9 to 31) using the surfactant composition for cosmetics of the present invention have higher bacteriostatic properties against Escherichia coli, Staphylococcus aureus, Aspergillus niger, and Propionibacterium acnes, and also have higher moisturizing properties than the cosmetics of Comparative Examples 4 to 16. Furthermore, as shown in Table 14, the Simpson index increased in all cases where the cosmetic preparation of the present invention was used, indicating that the balance of the normal skin flora was improved by using the cosmetic preparation of the present invention. [Industrial Applicability]

[0220] Cosmetics using the surfactant composition for cosmetics of the present invention have high bacteriostasis and excellent moisturizing properties for the skin, and are therefore suitable for use in cosmetics such as cleansers and skin care cosmetics. Furthermore, it can be used as a household cleaner (such as a laundry detergent and a dishwashing detergent) and an industrial cleaner (such as a cleaner for metals and precision parts).

Claims

1. A cosmetic surfactant composition containing an amphoteric surfactant (A) and an ester (B), wherein the amphoteric surfactant (A) contains an amphoteric surfactant (a1) represented by the following general formula (1), the ester (B) contains an ester (b1) represented by the following general formula (2), and the weight ratio of the ester (b1) to the weight of the amphoteric surfactant (a1) is 0.1% by weight to 10% by weight. 【Chemistry 1】 [In the formula, R １ represents an alkyl group or an alkenyl group having 6 to 25 carbon atoms, X represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, M １ represents a hydrogen atom, a sodium atom, a potassium atom, or triethanolammonium, and n represents 1 or 2. 【Chemistry 2】 [In the formula, R ２ represents an alkyl or alkenyl group having 6 to 25 carbon atoms, and n represents 1 or 2.

2. The cosmetic surfactant composition according to claim 1, A cosmetic in which the weight ratio of the surfactant composition for cosmetics is 1 to 20% by weight.

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