TWI657830B - Skin cleanser composition - Google Patents

Abstract

The skin cleanser composition of the present invention contains the following components (A), (B), and (C):

(A) Polyoxyethylene fatty acid ester represented by general formula (1) 0.5 to 8% by mass, [Chem. 1] R ¹ -COO- (CH ₂ CH ₂ O) _k H (1)

(In the formula, R ¹ represents a straight or branched chain saturated or unsaturated hydrocarbon group having 7 to 21 carbon atoms, and k represents a number of 5 to 40)

(B) Polyoxyethylene glycerin fatty acid ester represented by general formula (2) 0.1 to 4.5 mass%,

(In the formula, R ² represents a straight or branched chain saturated or unsaturated hydrocarbon group having 7 to 9 carbon atoms, and m + n represents a number of 3 to 40)

(C) water, the mass ratio ((A) / (B)) of component (A) to component (B) is 0.5 to 80, and the total non-ionic surfactant containing components (A) and (B) The total content is 0.6 to 9% by mass in the total composition.

Description

Skin cleanser composition

The present invention relates to a skin cleanser composition.

Previously, women removed makeup in various states due to seasonal changes or the diversity of living environments. For example, makeup is removed in winter when the humidity is low and dry, and summer is very humid when the humidity is high. In addition, in winter, the heater is turned on, and a humidifier is used to remove makeup in a high humidity state. In summer, the air conditioner is turned on to remove makeup in a dry, low humidity state.

In addition, when the same makeup remover is used in various states, for example, there are cases where there is no sticky feeling even in the dry state in winter, but there is a sticky feeling in summer. For women, it is not possible to satisfy each state The case of the next use.

As a cleansing product with reduced stickiness and excellent usability, research on cleansing cosmetics containing polyoxyethylene fatty acid glycerin, polyols, and styrene polymers (Patent Document 1), containing nonionic surfactants, oils, and synthetics Silicate, (meth) acrylic acid ester copolymer gel-like cleansing cosmetics (Patent Document 2), a skin cleanser composed of a combination of a specific nonionic surfactant and a specific copolymer (Patent Document 3) and the like.

(Patent Document 1) Japanese Patent Laid-Open No. 2009-227629

(Patent Document 2) Japanese Patent Laid-Open No. 2012-240988

(Patent Document 3) Japanese Patent Laid-Open No. 2013-53148

The present invention relates to a skin cleansing composition, which comprises the following components (A), (B) and (C):

(A) Polyoxyethylene fatty acid ester represented by general formula (1) 0.5 to 8% by mass, [Chem. 1] R ¹ -COO- (CH ₂ CH ₂ O) _k H (1)

(In the formula, R ¹ represents a straight or branched chain saturated or unsaturated hydrocarbon group having 7 to 21 carbon atoms, and k represents a number of 5 to 40)

(B) Polyoxyethylene glycerin fatty acid ester represented by general formula (2) 0.1 to 4.5 mass%,

(In the formula, R ² represents a straight or branched chain saturated or unsaturated hydrocarbon group having 7 to 9 carbon atoms, and m + n represents a number of 3 to 40)

(C) Water, the mass ratio ((A) / (B)) of the component (A) to the component (B) is 0.5 to 80, and the total nonionic surfactant containing the components (A) and (B) The total content is 0.6 to 9% by mass in the total composition.

Conventional makeup removers are not used in the case of low humidity or high humidity, and people who have the same feeling of reduced stickiness can also get the same. Even those who have reduced sticky feeling have cleansing power, Insufficient stability.

Therefore, a makeup remover having the same feeling of use and satisfying washing power and stability is desired regardless of humidity conditions.

The present inventors have found that by using a specific polyoxyethylene fatty acid ester and polyoxyethylene glycerin fatty acid ester in combination, the sticky feeling of the skin after use in any state of high humidity and low humidity can be obtained Reduced skin cleanser composition with excellent detergency and stability.

The skin cleanser composition of the present invention reduces the sticky feeling of the skin after use regardless of humidity conditions. In addition, it is excellent in detergency, especially for makeup stains around the eyes, and it has excellent stability in making the appearance transparent without separation.

The polyoxyethylene fatty acid ester of the component (A) used in the present invention is represented by the general formula (1).

In the formula, R ¹ represents a straight or branched chain saturated or unsaturated hydrocarbon group having 7 to 21 carbon atoms, which reduces stickiness regardless of humidity conditions, refreshes the skin after wiping, improves cleaning power, stability, In terms of flushability, the carbon number is preferably 9 to 17, more preferably 11 to 13. The structure of the hydrocarbon group is preferably a linear saturated or unsaturated hydrocarbon group, and more preferably a linear saturated hydrocarbon group.

In addition, k represents a number of 5 to 40. In terms of refreshing the skin after wiping, improving washing power and rinsability, it is preferably 6 to 20, and more preferably 10 to 14.

In the present invention, the ingredient (A) is preferably HLB 8-20, more preferably HLB 10-18, in terms of refreshing the skin after wiping, and improving detergency, stability, and rinsability. HLB11 ~ 16 is preferred, and HLB12 is even more preferred ~ 14.

In addition, the HLB is an index indicating a hydrophilic-lipophilic balance, and in the present invention, a value calculated using the following formula from Oda, Teramura, and others is used.

As the component (A), polyoxyethylene (10) monolaurate and polyoxyethylene (12) mono are preferred in terms of refreshing the skin after wiping and improving detergency, stability, and rinseability. The laurate is more preferably polyoxyethylene (12) monolaurate. Furthermore, the polyoxyethylene (10) monolaurate is lauric acid PEG-10, and the polyoxyethylene (12) monolaurate is lauric acid PEG-12.

As component (A), as polyoxyethylene (12) monolaurate, for example, EMANON 1112 (HLB13.7) (manufactured by Kao Corporation), PEL-12 (HLB14) (manufactured by Japan Latex Corporation), and the like can be used; As the oxyethylene (10) monolaurate, commercially available products such as NIKKOL MYL-10 (HLB12.5) (manufactured by Nikko Chemicals) can be used. In addition, the above compounds are all straight-chain hydrocarbon groups, and the parentheses in the parentheses indicate the addition mole number of ethylene oxide in the general formula (1).

The component (A) can be used singly or in combination of two or more types. The content of the component (A) is 0.5% by mass or more in terms of improving the cleaning power and stability, refreshing the skin after wiping, and improving the rinseability. It is preferably 1 mass% or more, more preferably 1.2 mass% or more, 8 mass% or less, more preferably 5 mass% or less, and even more preferably 3.5 mass% or less. The content of the component (A) is preferably from 0.5 to 8% by mass in the total composition. It is 1 to 5 mass%, more preferably 1.2 to 3.5 mass%.

The polyoxyethylene glycerol fatty acid ester of the component (B) is represented by the general formula (2).

In the formula, R ² is a saturated or unsaturated hydrocarbon group having a straight or branched chain of 7 to 9 carbons in terms of refreshing the skin after wiping and improving washing power, stability, and flushability. R ^{2 is} preferably a linear saturated or unsaturated hydrocarbon group, and more preferably a linear saturated hydrocarbon group.

In addition, m + n represents a number of 3 to 40. In terms of refreshing the skin after wiping and improving the washing power, stability, and rinsing ability, it is preferably 4 to 15, more preferably 5 to 8, and It is preferably 6.

In the present invention, the ingredient (B) is preferably HLB 8-20, more preferably HLB 10-18, in terms of refreshing the skin after wiping, and improving detergency, stability, and rinsability. HLB11 to 16 are preferred, and HLB12 to 14 are even more preferred.

As the component (B), in terms of refreshing the skin after wiping and improving detergency, stability, and rinsability, the hydrocarbon group represented by R ^{2 in} the general formula (2) is preferably a compound having 7 carbon atoms A mixture with a compound having 9 carbon atoms, that is, a mixture of polyoxyethylene caprylic acid glyceride and polyoxyethylene capric acid glyceride, for example, polyoxyethylene (6) (octyl / decanoic acid) glycerin, polyoxyethylene ( 7) (octyl / decanoic acid) glycerin, polyoxyethylene (8) (octyl / decanoic acid) glycerin, etc., more preferably polyoxyethylene (6) (octyl / decanoic acid) glycerin, polyoxyethylene (7 ) (Octyl / decanoate) glycerol, and more preferably polyoxyethylene (6) (octyl / decanoate) glycerol.

In addition, polyoxyethylene (6) (octyl / decanoic acid) glycerin is (octanoic / decanoic acid) PEG-6 glyceride, and polyoxyethylene (7) (octyl / decanoic acid) glycerin is PEG-7 (octyl / decanoic acid) glycerin. Octyl / decanoate) glyceride, and polyoxyethylene (8) (octyl / decanoate) glycerol is PEG-8 (octyl / decanoate) glycerol.

As the component (B), as the polyoxyethylene (6) (octyl / decanoic acid) glycerin, for example, TEGOSOFT GMC6 (HLB14) (manufactured by Evolik Industries AG), Softigen767 (manufactured by Sasol), etc .; as polyoxyethylene (7) (octyl / decanoic acid) glycerol, for example, CETIOL HE810 (HLB14) (manufactured by Cognis Japan), etc .; and polyoxyethylene (8) (octyl) / Decanoic acid) glycerin, for example, commercially available products such as LAS (manufactured by GATTEFOSSE) can be used.

The component (B) may be used singly or in combination of two or more types. In terms of content, in terms of improving detergency, stability, and washability, the total composition is 0.1% by mass or more, and preferably 0.15% by mass or more. It is more preferably 0.2% by mass or more, even more preferably 0.25% by mass, 4.5% by mass or less, more preferably 3% by mass or less, even more preferably 1.5% by mass or less, and still more preferably 1% by mass or less. The content of the component (B) is 0.1 to 4.5% by mass in the total composition, preferably 0.15 to 3% by mass, more preferably 0.2 to 1.5% by mass, and even more preferably 0.25 to 1% by mass.

In the present invention, regarding the mass ratio ((A) / (B)) of the component (A) to the component (B), regardless of the humidity condition, it improves the stickiness, improves the cleaning power and the stability, and accelerates the time after wiping. The dryness of the skin makes the skin refreshed after wiping, which is 0.5 or more, preferably 0.8 or more, more preferably 1.0 or more, still more preferably 1.1 or more, even more preferably 2 or more, 80 or less, It is preferably 33 or less, more preferably 20 or less, and even more preferably 15 or less. The mass ratio ((A) / (B)) of the component (A) to the component (B) is 0.5 to 80, preferably 0.8 to 33, more preferably 1.0 to 20, and even more preferably 1.1 to 15 , And more preferably 2 to 15.

In addition, regarding the total content of the total nonionic surfactants containing the components (A) and (B), in terms of improving the cleaning power, refreshing the skin after wiping, and speeding up the drying of the skin after wiping, The total composition is 0.6 mass% or more, preferably 1.1 mass% or more, more preferably 1.5 mass% or more, 9 mass% or less, more preferably 6 mass% or less, and even more preferably 5 mass% or less. In addition, the total non-separation containing components (A) and (B) The total content of the daughter-based surfactant in the total composition is 0.6 to 9% by mass, preferably 1.1 to 6% by mass, and more preferably 1.5 to 5% by mass.

The water of the component (C) is used as a solvent, and its content is preferably 70% by mass or more, more preferably 75% by mass or more, and more preferably 80% by mass in terms of refreshing the skin after wiping. % Or more, preferably 98% by mass or less, more preferably 96% by mass or less, still more preferably 95% by mass or less. The water content of the component (C) in the total composition is preferably 70 to 98% by mass, more preferably 75 to 96% by mass, and even more preferably 80 to 95% by mass.

Furthermore, in the present invention, regarding the mass ratio ((A) + (B)) of the components (A) and (B) to the component (C) ((A) + (B)) / (C), From the viewpoint of detergency, it is preferably 0.7% (0.007) or more, more preferably 1.2% (0.012) or more, even more preferably 2% (0.02) or more, and even more preferably 2.5% (0.025) or more. In terms of refreshing the skin after wiping, suppressing stickiness or slippery feeling, and ease of drying the skin after wiping, it is preferably 10% (0.1) or less, and more preferably 8% ( 0.08) or less, and more preferably 6% (0.06) or less.

The skin cleanser composition of the present invention preferably further contains (D) polyethylene glycol having an average molecular weight of 200 to 2000, which can improve the removal of sebum dirt and make the skin refreshed after use. The number average molecular weight of the polyethylene glycol of the component (D) is preferably 300 to 1,000, and more preferably 300 to 600.

Examples of the polyethylene glycol include PEG-200 (number average molecular weight 200), PEG-300 (number average molecular weight 300), PEG-400 (number average molecular weight 400), PEG-600 (number average molecular weight 600), Commercial products such as PEG-1000 (number average molecular weight 1000), PEG-1540 (number average molecular weight 1450), PEG-2000 (number average molecular weight 2000) (the above are manufactured by Sanyo Chemical Co., Ltd.) and the like.

In addition, the number-average molecular weight is based on a new edition of the Cosmetics Raw Materials Standard (August 30, 1999, 1st edition, Pharmaceutical Affairs Daily), and specifications for different types of ingredients for cosmetics (April 18, 1997, 1st edition, Pharmaceuticals Measured by the method described in Shidai Daily.

The component (D) may be used singly or in combination of two or more types. The content thereof is preferably 0.1% by mass or more in the total composition in terms of improving the removal of sebum dirt and refreshing the skin after wiping. It is 0.15 mass% or more, more preferably 0.2 mass% or more, more preferably 4 mass% or less, more preferably 3 mass% or less, and still more preferably 2 mass% or less. The content of the component (D) in the total composition is preferably 0.1 to 4% by mass, more preferably 0.15 to 3% by mass, and still more preferably 0.2 to 2% by mass.

In the present invention, the mass ratio ((A) + (B)) of the components (A) and (B) to the component (D) ((A) + (B)) / (D) is increased. In terms of the cleaning power of foundation and sebum, and reducing the stickiness of the skin after wiping, it is preferably 0.2 or more, more preferably 0.8 or more, still more preferably 1 or more, preferably 50 or less, and more preferably It is 30 or less, and more preferably 15 or less. The mass ratio ((A) + (B)) of the components (A) and (B) to the component (D) ((A) + (B)) / (D) is preferably 0.2 to 50, It is more preferably 0.8 to 30, and even more preferably 1 to 15.

The skin cleanser composition of the present invention preferably further contains (E) N-fluorenyl-N-alkyl taurine or a salt thereof, which can improve the cleaning power and the stability in a wide temperature range, so that Skin is refreshed after wiping.

The fluorenyl group of the component (E) is preferably a long-chain fluorenyl group having 12 to 20 carbon atoms, and more preferably an alkynyl group, alkenyl group, or hydroxyalkanoyl group having 12 to 18 carbon atoms. Specific examples of sulfenyl include lauryl, myristyl, palmitoyl, stearyl, oleyl, and oleyl (cocoyl) derived from coconut oil fatty acids. In terms of refreshing the skin after use, it is preferably lauryl, myristyl, and stearin. Fluorenyl, more preferably stearyl fluorenyl.

In addition, as the alkyl group of the component (E), an alkyl group having 1 to 5 carbon atoms such as methyl, ethyl, and propyl may be mentioned, in order to improve the cleaning power and stability, and to refresh the skin after wiping. In other words, an alkyl group having 1 to 3 carbon atoms is preferred, and a methyl group is more preferred.

Furthermore, examples of the salts of N-fluorenyl-N-alkyl taurine include alkali metal salts such as sodium, potassium, and lithium, and amine salts such as triethanolamine, diethanolamine, and monoethanolamine. In terms of stability and refreshing of the skin after wiping, a salt with sodium and potassium is preferred, and a salt with sodium is more preferred.

As the component (E), in terms of improving stability and refreshing the skin after use, N-laurylmethyltaurine sodium, N-myristylmethyltaurine sodium, Sodium N-palmitinylmethyltaurine, sodium N-stearylmethyltaurate, more preferably sodium N-laurylmethyltaurine, N-stearylmethyltaurine Sodium, more preferably sodium N-stearylmethyltaurate.

As the component (E), for example, as the N-laurylmethyltaurine, NIKKOL LMT can be used; as the N-myristylmethyltaurine sodium, NIKKOL MMT can be used; as N-palmitinyl As the sodium methyltaurine, NIKKOL PMT can be used; as the N-stearylmethyl sodium taurate, commercially available products such as NIKKOL SMT (the above are manufactured by Nikko Chemicals) can be used.

The component (E) may be used singly or in combination of two or more kinds. The content thereof is preferably 0.05% by mass or more in the total composition in terms of improving detergency, stability, and refreshing the skin after wiping. It is more preferably 0.1% by mass or more, still more preferably 0.2% by mass or more, more preferably 2% by mass or less, even more preferably 1% by mass or less, and still more preferably 0.6% by mass. The content of the component (E) in the total composition is preferably 0.05 to 2% by mass, more preferably 0.1 to 1% by mass, and still more preferably 0.2 to 0.6% by mass.

The skin cleanser composition of the present invention may further contain (F) acid and its salt, which can further improve stability and detergency.

The component (F) may be any of an inorganic acid and a salt thereof, and an organic acid and a salt thereof.

Examples of the inorganic acid include hydrochloric acid, sulfuric acid, sulfurous acid, and phosphoric acid. Examples of the inorganic salt include salts of the above-mentioned inorganic acids, alkali metals, alkaline earth metals, aluminum, and the like, and specific examples include sodium chloride, potassium chloride, sodium sulfate, potassium sulfate, magnesium chloride, magnesium sulfate, and chlorine. Aluminum, aluminum sulfate, sodium phosphate, potassium phosphate, etc. One kind of inorganic acid and its salt can be used, or two or more kinds can be used in combination. In terms of improving stability and detergency, phosphoric acid, monosodium phosphate, disodium phosphate, trisodium phosphate, and chlorinated are preferred. Sodium, sodium sulfate, and potassium chloride are more preferably phosphoric acid, monosodium phosphate, disodium phosphate, and trisodium phosphate.

Examples of the organic acid include acids containing a carboxylic acid having a carbon number of 6 or less. Specific examples include acetic acid, lactic acid, malic acid, citric acid, succinic acid, and adipic acid. Examples of the organic acid salt include salts of the above-mentioned organic acids, alkali metals, alkaline earth metals, aluminum, and the like, and specific examples thereof include sodium acetate, potassium acetate, sodium lactate, potassium lactate, aluminum lactate, sodium malate, and apples. Potassium acid, sodium citrate, potassium citrate, sodium succinate, potassium succinate and the like. Organic acids and their salts can be used singly or in combination of two or more. In terms of improving stability and detergency, citric acid, monosodium citrate, disodium citrate, and trisodium citrate are preferred. , Succinic acid, potassium succinate, more preferably citric acid, monosodium citrate, disodium citrate, and trisodium citrate, and further preferably prepared by mixing citric acid and trisodium citrate.

The component (F) is preferably one or two or more selected from the group consisting of phosphoric acid, hydrochloric acid, sulfuric acid, citric acid, succinic acid, and alkali metal salts thereof.

The component (F) can be used singly or in combination of two or more kinds. For its content, in terms of improving the stability and detergency, it is calculated by the total amount of the acid conversion amount of the acid and its salt. The content is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, still more preferably 0.2% by mass or more, more preferably 2% by mass or less, even more preferably 1.2% by mass or less, and still more preferably 0.8% by mass the following. In addition, as for the content of the component (F), calculated based on the total amount of the conversion amount of the acid of the acid and its salt, it is preferably 0.05 to 2% by mass, more preferably 0.1 to 1.2% by mass, and even more preferably 0.2 to 0.8% by mass.

The skin cleanser composition of the present invention may further contain a polyhydric alcohol other than the component (D) as the component (G), so that the moisturizing feeling can be continued, and the stability and detergency can be further improved.

Examples of the polyhydric alcohol as the component (G) include propylene glycol, isoamyl glycol, 1,3-butanediol, dipropylene glycol, glycerol, sorbitol, erythritol, pentaerythritol, mannitol, and xylose. Alcohol, polyoxyethylene (10) methyl glucoside, polyoxypropylene (9) diglyceryl ether, a glycerol derivative represented by the general formula (3), and the like.

[化 3] Gly- [O- (PO) _a- (EO) _b- (BO) _c H] ₃ (3)

(In the formula, Gly represents the residue from which the hydroxyl group is removed from glycerol, PO represents the propylene oxide group, EO represents the ethylene oxide group, a and b are the average addition mole numbers of PO and EO, respectively, and the value of 1 to 50, PO The mass ratio (PO / EO) to EO is 1/5 ~ 5/1, BO represents an oxyalkylene group with a carbon number of 4, and c is the average addition mole number of BO, which represents a value of 1 ~ 5)

Among these, 1,3-butanediol, propylene glycol, dipropylene glycol, sorbitol, glycerin, and polyoxypropylene are preferable in terms of the moisturizing feeling, stability improvement, and detergency. (9) Diglyceryl ether, a glycerin derivative represented by the general formula (3), more preferably 1,3-butanediol, dipropylene glycol, a glycerin derivative represented by the general formula (3), and more preferably a general formula (3) A glycerin derivative.

Specific examples of the glycerol derivative represented by the general formula (3) include an average addition mole number of (EO) of 8, an average addition mole number of (PO) of 5, and an average of (BO). The number of moles to be added is 3, preferably polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether (3BO) (8EO) (5PO).

As the component (G), 1,3-butanediol, propylene glycol, dipropylene glycol, sorbitol, and glycerin can be used generally, and as the polyoxypropylene (9) diglyceryl ether, SY-DP9 (manufactured by Sakamoto Pharmaceutical Co., Ltd.) can be used. Etc. As the glycerin derivative represented by the general formula (3), which is a polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether (3B.O.) (8E.O.) (5P.O.), WILBRIDE S can be used. -753 (manufactured by Nippon Oil).

The component (G) may be used singly or in combination of two or more. As for the content, in terms of continuity of moisturizing feeling, improvement of stability, and detergency, the total composition is preferably 2% by mass or more, and more preferably 3 mass% or more, more preferably 5 mass% or more, preferably 18 mass% or less, more preferably 10 mass% or less, and still more preferably 9 mass% or less. The content of the component (G) in the total composition is preferably 2 to 18% by mass, more preferably 3 to 10% by mass, and still more preferably 5 to 9% by mass.

The skin cleanser composition of the present invention may contain, in addition to the above-mentioned components, components used in ordinary detergent compositions, such as non-ionic surfactants and components (a) other than the components (A) and (B). E) Other anionic surfactants, amphoteric surfactants, ethanol, pigments, UV absorbers, tackifiers, cold sensants, bactericides, anti-inflammatory agents, pearlescent agents, scrub agents, perfumes, antioxidants, preservatives, and Ultraviolet absorbents, oils and extracts other than perfumes and preservatives.

Examples of nonionic surfactants other than the components (A) and (B) include polyglycerol fatty acid esters, polyoxyethylene glyceryl fatty acid esters other than the component (B), Sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene castor oil, polyoxyethylene hardened castor oil, polyoxyethylene hardened castor oil fatty acid ester, Polyoxyethylene alkyl ether, sucrose fatty acid ester, alkyl polyglucoside, alkyl glyceryl ether and the like. Among these, polyoxyethylene alkyl ether, alkyl polyglucoside, alkyl glyceryl ether, and polyglycerin fatty acid are preferred in terms of improving detergency, stability, and skin feel after wiping. Esters, polyoxyethylene sorbitan fatty acid esters, polyoxyethylene hardened castor oil fatty acid esters, more preferably polyoxyethylene alkyl ethers, alkyl polyglucosides, and alkyl glyceryl ethers.

In terms of improving stability and detergency, those having an HLB of 8 to 20, more preferably 10 to 18, and still more preferably 11 to 16 are preferred.

Non-ionic surfactants other than the components (A) and (B) may be used singly or in combination of two or more kinds. The content of the non-ionic surfactants is to improve the cleaning power, stability, and skin feel after wiping. The total composition is preferably 4% by mass or less, more preferably 3% by mass or less, still more preferably 1% by mass or less, and still more preferably 0.8% by mass or less.

In addition, the content of the nonionic surfactants other than the components (A) and (B) is lower than that of the components (in terms of suppressing a slipping feeling, improving washing power, stability, and skin feel after wiping). The total mass ratio of A) and (B) is preferably 0.8 or less, more preferably 0.5 or less, and even more preferably 0.3 or less.

As the anionic surfactant and the amphoteric surfactant other than the component (E), one kind may be used, or two or more kinds may be used in combination, and the content thereof is preferably from the total composition in terms of improving moisturizing feeling and refreshing. 1 mass% or less, more preferably 0.5 mass% or less, still more preferably 0.1 mass% or less, and even more preferably substantially 0 mass%.

The content of ethanol is preferably 5% by mass or less, more preferably 3% by mass or less, and even more preferably 1 in order to make the skin cleanser composition spread uniformly. Mass% or less, more preferably 0.5 mass% or less, and still more preferably substantially 0 mass%.

The ultraviolet absorber can be used singly or in combination of two or more kinds. The content is preferably 5% by mass or less in the total composition in terms of improving the cleaning power and reducing the sticky feeling after wiping. 1% by mass or less, more preferably 0.5% by mass or less, even more preferably substantially 0% by mass.

Tackifiers can be used singly or in combination of two or more. The content of the tackifier is preferably 2% by mass or less in terms of improving the cleaning power and reducing the sticky feeling after wiping. 1% by mass or less, more preferably 0.5% by mass or less, even more preferably substantially 0% by mass. Furthermore, the tackifier is water-soluble, and within a range of the above-mentioned content, it is in a state of being dissolved in the composition at 20 ° C.

When a styrenic polymer is used as a tackifier, the content of the composition is from the viewpoint of suppressing slippery feeling, the viewpoint of ensuring the transparency of the composition, the ease of impregnation of the fiber product of the composition, and the washing From the standpoint of cleanliness, the total composition is preferably less than 0.01% by mass, more preferably 0.005% by mass or less, still more preferably 0.0001% by mass or less, and even more preferably substantially not contained. The styrene polymer is synthesized by copolymerizing a styrene-containing monomer, and examples thereof include vinyl acetate. Styrene copolymer, vinyl pyrrolidone. Styrene copolymer, alkyl acrylate. Styrene copolymer, alkyl acrylate. Acrylonitrile. Styrene copolymer, and acrylamide. Styrene copolymers.

In addition, as the thickener, an acrylic polymer containing acrylic acid or methacrylic acid as a constituent unit other than the above-mentioned styrene-based polymer, a polysaccharide such as polytriglucose, a cellulose-based polymer, and a weight average molecular weight may be One or two or more polyethylene glycols of 200,000 to 5 million are used in combination.

Examples of the acrylic polymer include those synthesized using acrylic acid or methacrylic acid as a monomer, and examples thereof include carboxyvinyl polymers and acrylic acid. The alkyl methacrylate copolymer is preferably acrylic acid. The copolymer of alkyl methacrylate is more preferably a copolymer of acrylic acid and an alkyl methacrylate having 10 to 30 carbon atoms ((acrylic acid / alkyl acrylate (C10-30)) copolymer). As a commercial item, PEMULEN TR-1, PEMULEN TR-2, Carbopol ETD2020 (made by Lubrizol Advanced Materials), etc. are mentioned, for example.

Examples of polysaccharides such as polytriglucose include polytriglucose and sodium hyaluronate, and examples of the cellulose-based polymer include methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and hydroxypropyl Methylmethyl cellulose, sodium carboxymethyl cellulose.

The weight average molecular weight of polyethylene glycol as a tackifier is preferably 200,000 or more, more preferably 300,000 or more, further preferably 500,000 or more, even more preferably 1 million or more, and particularly preferably 2 million or more. It is preferably 5 million or less, further preferably 4 million or less, and even more preferably 3.5 million or less. Examples of commercially available products include: ALKOX Series (Ming Sung Chemical Industries, polyethylene glycol): ALKOX E30 (weight average molecular weight 300,000 to 500,000), ALKOX E-45 (weight average molecular weight 600,000 to 800,000) , ALKOX E-60 (weight average molecular weight 1 million to 1.2 million), ALKOX E-75 (weight average molecular weight 2 million to 2.5 million), ALKOX E-100 (weight average molecular weight 2.5 million to 3 million). Among these, ALKOX E-100 is more preferable.

As a thickener, it is preferably selected from the group consisting of polytriglucose, a cellulose-based polymer, and a weight-average molecular weight of 200,000 to 5,000,000 from the viewpoint of suppressing slipping feeling and ensuring stability and transparency of the composition. One or more types of polyethylene glycol.

The fragrance also contains cooling agents such as menthol, which can be used singly or in combination of two or more. As its content, it can improve the aroma and stability during use. In terms of the total composition, it is preferably 1% by mass or less, more preferably 0.5% by mass or less, still more preferably 0.3% by mass or less, still more preferably 0.1% by mass or less, and even more preferably substantially 0% by mass. %.

Preservatives can be used alone or in combination of two or more. Examples of oily preservatives include methyl parahydroxybenzoate, ethyl parahydroxybenzoate, propyl parahydroxybenzoate, and butyl parahydroxybenzoate. The amount of In terms of anticorrosive effect and stability, the total composition is preferably 1% by mass or less, more preferably 0.7% by mass or less, and further preferably 0.3% by mass or less.

Oils other than ultraviolet absorbers, fragrances and preservatives can be used alone or in combination of two or more. Regarding the content, in terms of improving the cleaning power and reducing the sticky feeling after wiping, it is included in the overall composition. It is preferably 5 mass% or less, more preferably 1 mass% or less, still more preferably 0.5 mass% or less, and even more preferably substantially 0 mass%.

In addition, regarding the content of oil agents other than the ultraviolet absorber, perfume, and preservative, in terms of improving the cleaning power and reducing the sticky feeling after wiping, it is relative to the total amount of the component (A) and the component (B). The mass ratio (the aforementioned oil agent / ((A) + (B))) is preferably 0.5 or less, more preferably 0.3 or less, even more preferably 0.1 or less, still more preferably 0.01 or less, and particularly preferably substantially 0.

Moreover, as a cold sensation agent, in addition to menthol, menthol, parsulone, menthyl acetate, menthyl lactate, eucalyptol, etc. may be contained, and eucalyptus oil and peppermint having the same Oil, green peppermint oil, peppermint oil, etc.

The skin cleansing composition of the present invention can be produced, for example, by heating the water of the component (C) as needed, adding the components (A), (B) and other components to the mixture, and stirring them to be uniform.

Regarding the skin cleanser composition of the present invention, in terms of improving the cleaning power and reducing the sticky feeling of the skin after wiping, the viscosity at 30 ° C is preferably 1 to 100 mPa. s, more preferably 2 ~ 50mPa. s, further preferably 3 to 10 mPa. s.

In the present invention, the viscosity is measured using a B-type viscosity meter (manufactured by Toki Sangyo, TV-B type, rotor No. 1, 60 rpm), 30 ° C, and 1 minute.

The skin cleansing composition of the present invention is preferably transparent, and the turbidity measured at 25 ° C is preferably 100 NTU or less, more preferably 60 NTU or less, still more preferably 30 NTU or less, and still more preferably 20 NTU or less. It is 10 NTU or less, the turbidity of water may be more than 0.2 NTU. Moreover, it is preferable that it is transparent after high-temperature storage and after low-temperature storage. In the present invention, the turbidity is measured using a turbidimeter based on the Nephelometric Turbidity Units (NTU) method and IS07027. Specifically, it is the value measured using the handheld waterproof turbidimeter TN100 (made by Eutech).

In addition, the skin cleanser composition of the present invention is preferably in a liquid form having the above-mentioned viscosity, and may also be in a form such as a sheet form obtained by impregnating a sheet-like composition with a sheet.

The skin cleanser composition of the present invention is, for example, preferably made into a facial cleanser, a cleanser, and the like, and more preferably a cleanser. Furthermore, it is more preferable to wash cosmetics applied to the face.

The detergent composition of the present invention can be used, for example, by the following methods: the composition is shaken and mixed directly or by a separator to make it homogeneous, and then immersed in a fiber selected from the group consisting of cotton, pulp, concrete, and copper ammonia fiber , Soluble fiber, PET (polyethylene terephthalate), nylon and other fiber products, preferably fiber products and sheets containing cotton, wipe the method; take it into the hand and mix Afterwards, the method of wiping with the above-mentioned fiber products and sheets; the method of taking the hands and mixing them and rinsing; the method of immersing in the above-mentioned fiber products and sheets and mixing and rinsing; after wiping with the above methods, Method of rinsing. Furthermore, it can also be used in the form of being impregnated with the said fiber product and sheet. From the viewpoint of easy use and improvement of cleaning power, it is preferable to take it in the hands and mix it, and then wipe it with the above-mentioned fiber products and sheets; dipping in the above-mentioned fiber products and sheets The method of wiping is more preferably a method of wiping by immersing in the above-mentioned fiber products and sheets. Furthermore, it can be rinsed with water or the like after wiping, and even if it is not rinsed, a sticky feeling can be suppressed.

Regarding the above embodiment, the present invention further discloses the following composition.

<1> A skin cleansing composition comprising the following components (A), (B) and (C):

(A) Polyoxyethylene fatty acid ester represented by general formula (1) 0.5 to 8% by mass, [Chem 4] R ¹ -COO- (CH ₂ CH ₂ O) _k H (1)

(In the formula, R ¹ represents a straight or branched chain saturated or unsaturated hydrocarbon group having 7 to 21 carbon atoms, and k represents a number of 5 to 40)

(B) Polyoxyethylene glycerin fatty acid ester represented by general formula (2) 0.1 to 4.5 mass%,

(In the formula, R ² represents a straight or branched chain saturated or unsaturated hydrocarbon group having 7 to 9 carbon atoms, and m + n represents a number of 3 to 40)

(C) water, the mass ratio ((A) / (B)) of component (A) to component (B) is 0.5 to 80, and the total non-ionic surfactant containing components (A) and (B) The total content is 0.6 to 9% by mass in the total composition.

<2> The skin cleansing composition according to the above <1>, wherein the component (A) is preferably HLB 8-20, more preferably HLB 10-18, still more preferably HLB 11-16, and even more preferably HLB 12- 14.

<3> The skin cleansing composition according to the above <1> or <2>, wherein the component (A) is preferably polyoxyethylene (10) monolaurate, polyoxyethylene (12) monolaurate , More preferably polyoxyethylene (12) monolaurate.

<4> The skin cleansing composition according to any one of the above <1> to <3>, wherein the content of the component (A) is preferably 1% by mass or more in the total composition, and more preferably 1.2% by mass % Or more, preferably 5 mass% or less, and more preferably 3.5 mass% or less.

<5> The skin cleansing composition according to any one of the above <1> to <4>, wherein the component (B) is preferably HLB8-20, more preferably HLB10-18, and even more preferably HLB11 ~ 16, and more preferably HLB 12-14.

<6> The skin cleansing composition according to any one of <1> to <5>, wherein the component (B) is preferably polyoxyethylene (6) (octyl / decanoic acid) glycerin, polyoxyl Ethylene (7) (octyl / decanoic acid) glycerol, polyoxyethylene (8) (octyl / decanoic acid) glycerol, more preferably polyoxyethylene (6) (octyl / decanoic acid) glycerin, polyoxyethylene ( 7) (octyl / decanoic acid) glycerol, and more preferably polyoxyethylene (6) (octyl / decanoic acid) glycerol.

<7> The skin cleansing composition according to any one of the above <1> to <6>, wherein the content of the component (B) is preferably 0.15% by mass or more in the total composition, and more preferably 0.2% by mass % Or more, more preferably 0.25% by mass, more preferably 3% by mass or less, still more preferably 1.5% by mass or less, still more preferably 1% by mass or less.

<8> The skin cleansing composition according to any one of <1> to <7>, wherein the mass ratio ((A) / (B)) of the component (A) to the component (B) is preferred It is 0.8 or more, more preferably 1.0 or more, still more preferably 1.1 or more, even more preferably 2 or more, more preferably 33 or less, still more preferably 20 or less, and even more preferably 15 or less.

<9> The skin cleansing composition according to any one of the above <1> to <8>, wherein the total content of the total nonionic surfactant containing the components (A) and (B) is preferably at The total composition is 1.1 mass% or more, more preferably 1.5 mass% or more, preferably 6 mass% or less, and even more preferably 5 mass% or less.

<10> The skin cleansing composition according to any one of the above <1> to <9>, wherein the content of water in the component (C) is preferably 70% by mass or more in the total composition, more preferably 75% by mass or more, more preferably 80% by mass or more, more preferably 98% by mass or less, still more preferably 96% by mass or less, still more preferably 95% by mass or less.

<11> The skin cleansing composition according to any one of the above <1> to <10>, wherein the total of the components (A) and (B) ((A) + (B)) is relative to the component (C ) Mass ratio ((A) + (B)) / (C) is preferably 0.7% (0.007) or more, more preferably 1.2% (0.012) or more, and further preferably 2% (0.02) or more, and more preferably It is preferably 2.5% (0.025) or more, preferably 10% (0.1) or less, more preferably 8% (0.08) or less, and still more preferably 6% (0.06) or less.

<12> The skin cleansing composition according to any one of <1> to <11>, which preferably further contains (D) polyethylene glycol having a number average molecular weight of 200 to 2000, and more preferably a number average Polyethylene glycol having a molecular weight of 300 to 1,000, and more preferably polyethylene glycol having a number average molecular weight of 300 to 600.

<13> The skin cleansing composition according to the above <12>, wherein the content of the component (D) is preferably 0.1% by mass or more, more preferably 0.15% by mass or more, and still more preferably 0.2 in the total composition. It is preferably 4 mass% or less, more preferably 3 mass% or less, and still more preferably 2 mass% or less.

<14> The skin cleansing composition according to the above <12> or <13>, wherein the total ratio of the components (A) and (B) ((A) + (B)) to the mass ratio of the component (D) ((A) Ten (B)) / (D) is preferably 0.2 or more, more preferably 0.8 or more, still more preferably 1 or more, preferably 50 or less, more preferably 30 or less, and even more preferably 15 or less .

<15> The skin cleansing composition according to any one of <1> to <14>, which preferably further contains (E) N-fluorenyl-N-alkyltaurine or a salt thereof, and more preferably Preferred are sodium N-laurylmethyltaurine, sodium N-myristylmethyltaurine, sodium N-palmitylmethyltaurine, and N-stearylmethyltaurine. Sodium is more preferably sodium N-laurylmethyltaurate and sodium N-stearylmethyltaurine, and still more preferably sodium N-stearylmethyltaurine.

<16> The skin cleanser composition according to the above <15>, wherein the content of the component (E) is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.2 in the total composition. It is preferably 2 mass% or less, more preferably 1 mass% or less, and still more preferably 0.6 mass%.

<17> The skin cleansing composition according to any one of <1> to <16>, which further preferably contains (F) an acid and a salt thereof, and more preferably an inorganic acid and a salt thereof, phosphoric acid, Monosodium phosphate, disodium phosphate, trisodium phosphate, sodium chloride, sodium sulfate, potassium chloride, more preferably phosphoric acid, monosodium phosphate, disodium phosphate, and trisodium phosphate are more preferred as organic acids and their salts. Citric acid, monosodium citrate, disodium citrate, trisodium citrate, sodium succinate, potassium succinate, and further preferably citric acid, monosodium citrate, disodium citrate, and trisodium citrate, further Citric acid and trisodium citrate are preferred.

<18> The skin cleansing composition according to the above <17>, wherein the content of the component (F) is preferably calculated based on the total of the conversion amount of the acid of the acid and its salt, and it is 0.05% by mass or more in the total composition It is more preferably 0.1% by mass or more, further preferably 0.2% by mass or more, more preferably 2% by mass or less, even more preferably 1.2% by mass or less, and still more preferably 0.8% by mass or less.

<19> The skin cleansing composition according to any one of the above <1> to <18>, further containing a polyhydric alcohol other than (G) component (D), more preferably propylene glycol and isoprene Alcohol, 1,3-butanediol, dipropylene glycol, glycerol, sorbitol, erythritol, pentaerythritol, mannitol, xylitol, polyoxyethylene (10) methyl glucoside, polyoxypropylene (9 ) Diglyceryl ether, a glycerol derivative represented by the general formula (3).

[Chem 6] Gly- [O- (PO) _a- (EO) _b- (BO) _c H] ₃ (3)

(In the formula, Gly represents the residue from which the hydroxyl group is removed from glycerol, PO represents the propylene oxide group, EO represents the ethylene oxide group, a and b are the average addition mole numbers of PO and EO, respectively, and the value of 1 to 50, PO The quality ratio (PO / EO) to EO is 1/5 ~ 5/1, BO represents oxyalkylene with carbon number 4, and c is the average addition mole number of BO, representing the value of 1 to 5)

<20> The skin cleansing composition according to the above <19>, wherein the component (G) is preferably 1,3-butanediol, propylene glycol, dipropylene glycol, sorbitol, glycerol, polyoxypropylene (9) Glyceryl ether, a glycerin derivative represented by the general formula (3), more preferably 1,3-butanediol, dipropylene glycol, a glycerol derivative represented by the general formula (3), and more preferably a general formula (3) The glycerin derivative indicated.

<21> The skin cleansing composition according to the above <19> or <20>, wherein the glycerin derivative represented by the general formula (3) is preferably polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether (3BO ) (8EO) (5PO).

<22> The skin cleansing composition according to any one of <19> to <21>, wherein the content of the component (G) is preferably 2% by mass or more, and more preferably 3% by mass in the total composition. % Or more, more preferably 5% by mass or more, preferably 18% by mass or less, more preferably 10% by mass or less, and still more preferably 9% by mass or less.

<23> The skin cleansing composition according to any one of <1> to <22>, wherein the content of the nonionic surfactant other than the components (A) and (B) is preferably in the total composition Medium is 4% by mass or less, more preferably 3% by mass or less, still more preferably 1% by mass or less, and still more preferably 0.8% by mass or less.

<24> The skin cleansing composition according to any one of the above <1> to <23>, wherein the content of the nonionic surfactant other than the components (A) and (B) is relative to the component (A The total mass ratio of) and (B) is preferably 0.8 or less, more preferably 0.5 or less, and even more preferably 0.3 or less.

<25> The skin cleansing composition according to any one of the above <1> to <24>, wherein the content of the anionic surfactant and the amphoteric surfactant other than the component (E) is preferably in the total composition It is 1% by mass or less, more preferably 0.5% by mass or less, still more preferably 0.1% by mass or less, and even more preferably substantially 0% by mass.

<26> The skin cleansing composition according to any one of the above <1> to <25>, wherein the content of ethanol is preferably 5% by mass or less, more preferably 3% by mass or less in the total composition, It is more preferably 1% by mass or less, still more preferably 0.5% by mass or less, and even more preferably substantially 0% by mass.

<27> The skin cleansing composition according to any one of <1> to <26>, wherein the content of the ultraviolet absorber is preferably 5% by mass or less, and more preferably 1% by mass in the total composition. Hereinafter, it is more preferably 0.5% by mass or less, and still more preferably substantially 0% by mass.

<28> The skin cleansing composition according to any one of <1> to <27>, wherein the content of the thickener is preferably 2% by mass or less, and more preferably 1% by mass in the total composition. Hereinafter, it is more preferably 0.5% by mass or less, and still more preferably substantially 0% by mass.

<29> The skin cleansing composition according to any one of the above <1> to <28>, wherein the content of the styrene polymer is preferably less than 0.01% by mass, and more preferably 0.005 in the total composition Mass% or less, more preferably 0.0001 mass% or less, and still more preferably substantially no content.

<30> The skin cleansing composition according to any one of the above <1> to <29>, wherein the content of the fragrance is preferably 1% by mass or less, more preferably 0.5% by mass or less in the total composition, It is more preferably 0.3% by mass or less, and still more preferably 0.1% by mass or more. In addition, it is more preferably substantially 0% by mass.

<31> The skin cleansing composition according to any one of the above <1> to <30>, wherein the content of the preservative is preferably 1% by mass or less, more preferably 0.7% by mass or less in the total composition It is more preferably 0.3% by mass or less.

<32> The skin cleansing composition according to any one of <1> to <31>, wherein the content of the oil agent other than the ultraviolet absorber, the fragrance, and the preservative is preferably 5 mass in the total composition % Or less, more preferably 1% by mass or less, still more preferably 0.5% by mass or less, even more preferably substantially 0% by mass.

<33> The skin cleansing composition according to any one of the above <1> to <32>, wherein the content of the oil agent other than the ultraviolet absorber, the fragrance, and the preservative is relative to the component (A) and the component (B The mass ratio of the total amount (the above oil agent / ((A) + (B))) is preferably 0.5 or less, more preferably 0.3 or less, even more preferably 0.1 or less, still more preferably 0.01 or less, and particularly preferably Is essentially zero.

<34> The skin cleansing composition according to any one of <1> to <33>, which is preferably transparent, and the turbidity measured at 25 ° C is preferably 100 or less, more preferably 60 or less, It is more preferably 30 or less.

<35> The skin cleansing composition according to any one of the above <1> to <34>, which is preferably liquid, and can be a sheet obtained by impregnating a sheet-like composition with a sheet The shape is preferably used as a facial cleanser and a cleanser, more preferably a cleanser, and more preferably a cosmetic applied to the face for cleaning.

<36> The use of the skin cleansing composition according to any one of the above <1> to <35>, which can be used by the following methods or the like: shaking the composition directly or through a separate person After mixing to make it homogeneous, immerse it in a fiber product selected from cotton, pulp, millet, copper ammonia fiber, soluble fiber, PET, nylon, etc., preferably in a fiber product and sheet containing cotton. Method of wiping; after taking into hands and mixing, wipe with the above-mentioned fiber products and sheets; after taking and mixing with hands, rinse; immerse the above-mentioned fiber products and sheets and mix them The method of post-rinsing; the method of cleaning after wiping with the above method; it can also be used in the form of impregnating the above-mentioned fiber products and sheets, which can be easily used. The method of wiping a sheet or the like is a method of wiping by immersing in the above-mentioned fiber products and sheets, and more preferably a method of immersing in the above-mentioned fiber products and sheets, etc. .

[Example] [Examples 1 to 28, Comparative Examples 1 to 2]

The skin cleanser compositions having the compositions shown in Tables 2, 3 and 4 were produced and evaluated for the removal of dirt on makeup (foundation, eye makeup), the removal of dirt on sebum, high humidity (temperature 28 ° C, humidity 60%) The presence or absence of sticky feeling under low humidity, the presence or absence of sticky feeling under low humidity (temperature 24 ° C, humidity 30%), storage stability and drying speed of the skin after wiping. The results are summarized in Table 2, Table 3, and Table 4.

(Production method)

The component (E) and methyl paraben were added to the component (C), and the mixture was heated and mixed at 80 ° C. to be uniformly dissolved. After that, it is cooled to 60 to 70 ° C, and the components (A), (B) and the remaining components are added while stirring, and mixed until uniform. Then, it cooled to 40 degreeC, and obtained the skin cleanser composition.

(Evaluation method) (1) For dirt removal of makeup (foundation):

Apply foundation (10% mixed with iron oxide black in Sofina Primavista Liquid Foundation Ocre 05 (manufactured by Kao)) to the skin on the inner side between the wrist of the forearm and the elbow, 3cm in diameter, 0.65mg / cm ² , Let stand for 1 hour. Thereafter, 2.0 g of the skin cleanser composition was penetrated into cotton (4.5 cm × 5 cm, manufactured by Lily Bell Patting Cotton Suzuran, and the same cotton was also used in the following evaluations), and wiped with the following method, using a color difference meter (CR -200, manufactured by Minolta Co., Ltd.) Lab was used to measure the color to determine the washing rate.

(Wipe method)

On the bottom surface of a table (weight: 180 g) having a size of 2 × 5 cm, a cotton cloth uniformly penetrating 2.0 g of the skin detergent composition was installed. The table was placed on the skin on which the foundation was applied under the above conditions, and the table was moved by applying force from the wrist to the elbow in the lateral direction and wiping it once. The pressure during wiping was 1.77 kPa.

(Calculation of cleaning rate)

‧Set the Lab of the skin before applying foundation to L _st , a _st , b _st .

‧Set the Lab of the skin after applying foundation to L ₁ , a ₁ , b ₁ .

‧Set Lab of skin after washing foundation to L ₂ , a ₂ , b ₂ .

‧Use the following formula to calculate the color difference (△ E ₁ ) before washing and the color difference (△ E ₂ ) after washing.

△ E ₁ = ((L ₁ -L _st ) ² + (a ₁ -a _st ) ² + (b ₁ -b _st ) ² } ^1/2

△ E ₂ = ((L ₂ -L _st ) ² + (a ₂ -a _st ) ² + (b ₂ -b _st ) ² } ^1/2

‧Calculate the washing rate from the following formula.

The higher the value, the higher the cleaning power.

Washing rate (%) = (1- (△ E ₂ / △ E ₁ )) × 100

(2) For the dirt removal of makeup (eye makeup):

Place an eyeliner (dejavu lasting-fine RN Liquid, manufactured by Imju) on the skin on the inner side between the wrist of the forearm and the elbow, with a length of 3cm and a width of 0.2cm in a direction perpendicular to the direction from the wrist to the arm. Apply 0.05g to the size and let it dry for 30 minutes. Thereafter, 2.0 g of the skin cleanser composition was penetrated into cotton, wiped with the following method, and evaluated based on the number of wipes until removal using the following criteria.

(Wipe method)

On the bottom surface of a table having a size of 2 × 5 cm (with a weight of 780 g), a cotton cloth uniformly penetrating 2.0 g of the skin detergent composition was installed. This table was placed on the skin on which the eyeliner was applied under the above-mentioned conditions, and the table was moved by applying force from the wrist to the elbow in the lateral direction and wiping it once. In addition, the number of wipes until the eyeliner was removed was evaluated. The pressure during wiping was 7.66 kPa.

(3) For the removal of dirt from sebum:

The sample sebum (Table 1) heated to 50 ° C. and stirred for 1 minute was dripped on the inner skin between the wrist of the forearm and the elbow, and smeared with a spatula to a size of 3 cm in diameter. The application amount of the sample sebum was set to about 0.26 mg / cm ² . Install a cup with a diameter of 3cm on the skin coated with sample sebum, add 5mL of skin cleanser into the cup, extend the arm until it is level with the ground, and slowly move the arm horizontally at a speed of about 2cm and 2 seconds 1 minute. After that, the skin cleanser composition and the cup were removed from the arm, and the washed area was gently rinsed with tap water to wash only the remaining skin cleanser composition, and left for 5 minutes. In addition, Lab color measurement was performed on the area where the sebum was washed using a color-difference meter to determine the washing rate.

(Calculation of cleaning rate)

‧Set the Lab of the skin before applying the sample sebum to L _st , a _st , b _st .

‧Set the Lab of the skin after applying the sample sebum to L ₁ , a ₁ , b ₁ .

‧Set the Lab of the skin after washing the sebum of the sample to L ₂ , a ₂ , b ₂ .

‧Use the following formula to calculate the color difference (△ E ₁ ) before washing and the color difference (△ E ₂ ) after washing.

△ E ₁ = ((L ₁ -L _st ) ² + (a ₁ -a _st ) ² + (b ₁ -b _st ) ² } ^1/2

△ E ₂ = ((L ₂ -L _st ) ² + (a ₂ -a _st ) ² + (b ₂ -b _st ) ² } ^1/2

‧Calculate the washing rate from the following formula.

Washing rate (%) = (1- (△ E ₂ / △ E ₁ )) × 100

(Preparation of sample sebum)

After mixing 95% by mass of the composition shown in Table 1 with 5% by mass of carbon black, the mixture was heated to 50 ° C. and stirred with a stirrer for 1 minute to prepare a sample sebum.

(4) Is there a sticky feeling under high humidity (temperature 28 ℃, humidity 60%):

3 professional sensory inspectors uniformly penetrate each skin cleanser composition A 2.0g cotton wipe was applied to the face with foundation (Sofina Primavista Liquid Foundation Ocre 05, manufactured by Kao Corporation), and the stickiness of the skin was evaluated after 10 seconds by touching with a hand. The stickiness was evaluated based on the following criteria, and was expressed as a total score of 3 persons.

(Evaluation)

5: Does not feel sticky at all.

4: Does not feel sticky.

3: Basically, it does not feel sticky.

2: Feeling sticky.

1: Feels strongly sticky.

(5) Is there a sticky feeling under low humidity (temperature 24 ℃, humidity 30%):

3 professional functional inspectors wiped the face with foundation (Sofina Primavista Liquid Foundation Ocre 05, manufactured by Kao Corporation) with 2.0g of cotton that evenly penetrated the skin cleanser composition, and evaluated the skin after 10 seconds by touching it with their hands. Sticky. The stickiness was evaluated based on the following criteria, and was expressed as a total score of 3 persons.

5: Does not feel sticky at all.

4: Does not feel sticky.

3: Basically, it does not feel sticky.

2: Feeling sticky.

1: Feels strongly sticky.

(6) Storage stability:

In a glass container (manufactured by Tokyo Glass, PS-04, No. 6, and a volume of 55 mL), 40 mL of each skin cleanser composition was added, and stored at 5 ° C, 25 ° C, and 50 ° C for one day. Since then, Under each of the above temperature conditions, the turbidity was measured using a hand-held waterproof turbidimeter TN100 (manufactured by Eutech). The unit of turbidity is NTU. The smaller the value, the more transparent the appearance.

(7) Drying speed of the skin after wiping:

Faces with foundation (Sofina Primavista Liquid Foundation Ocre 05, manufactured by Kao Corporation) were wiped off by 3 professional functional inspectors with 2.0g of cotton that evenly penetrated the skin cleanser composition, and then traced with fingertips for 1 second. Touch the skin once in a circle with a diameter of 5 cm, and evaluate based on the number of times the fingertips feel stopped, expressed as the total number of times for 3 people.

In the same manner as in Examples 1 to 28, a skin cleanser composition having a composition shown below was produced.

[Example 29] (ingredient)

The obtained skin cleanser composition has a transparent appearance, has excellent detergency for makeup dirt, and has no sticky feeling under high humidity and low humidity after use, and has excellent stability. The dryness of the skin after wiping is also good. Faster.

[Example 30] (ingredient)

The obtained skin cleanser composition has a transparent appearance, has excellent detergency for makeup dirt, and has no sticky feeling under high humidity and low humidity after use, and has excellent stability. The dryness of the skin after wiping is also good. Faster.

[Example 31] (ingredient)

The obtained skin cleanser composition has a transparent appearance, has excellent detergency for makeup dirt, and has no sticky feeling under high humidity and low humidity after use, and has excellent stability. The dryness of the skin after wiping is also good. Faster.

[Example 32] (ingredient)

The obtained skin cleanser composition has a transparent appearance, has excellent detergency for makeup dirt, and has no sticky feeling under high humidity and low humidity after use, and has excellent stability. The dryness of the skin after wiping is also good. Faster.

Claims (16)

A skin cleanser composition comprising the following components (A), (B), and (C): (A) a polyoxyethylene fatty acid ester represented by the general formula (1) 0.5 to 8% by mass, and R ¹ -COO- (CH ₂ CH ₂ O) _k H (1) (wherein R ¹ represents a straight or branched chain saturated or unsaturated hydrocarbon group having 7 to 21 carbon atoms, and k represents a number from 5 to 40) ( B) Polyoxyethylene glycerin fatty acid ester represented by general formula (2) 0.1 to 4.5 mass%, (In the formula, R ² represents a straight or branched chain saturated or unsaturated hydrocarbon group having 7 to 9 carbon atoms, and m + n represents a number of 3 to 40) (C) water, component (A) relative to component (B The mass ratio ((A) / (B)) of) is 1.1 to 80, and the total content of the total nonionic surfactants containing components (A) and (B) is 0.6 to 9% by mass in the total composition. For example, the skin cleansing composition according to item 1 of the patent application range, wherein the mass ratio ((A) / (B)) of the component (A) to the component (B) is 1.1-20. For example, the skin cleansing composition of the first patent application scope further contains (D) polyethylene glycol having a number average molecular weight of 200 to 2000. For example, the skin cleansing composition of claim 3 in the patent application scope, wherein the total ratio of the components (A) and (B) ((A) + (B)) to the mass ratio of the component (D) ((A) + (B)) / (D) is 0.2 ~ 50. For example, the skin cleansing composition of the third patent application range, wherein the mass ratio ((A) / (B)) of the component (A) to the component (B) is 1.0 to 20, and the components (A) and ( The mass ratio ((A) + (B)) / (D) of the total ((A) + (B)) to the component (D) is 0.2 to 50. For example, the skin cleansing composition according to item 3 or 4 of the scope of patent application, wherein the content of the component (D) is 0.1% by mass or more and 4% by mass or less in the total composition. For example, the skin cleansing composition according to the first patent application scope further contains (E) N-fluorenyl-N-alkyl taurine or a salt thereof. For example, the skin cleansing composition according to item 7 of the scope of patent application, wherein the content of the component (E) is 0.05% by mass or more and 2% by mass or less in the total composition. For example, the skin cleansing composition of the scope of patent application No. 1 further contains (F) an acid and a salt thereof. For example, the skin cleansing composition according to item 9 of the scope of the patent application, wherein the component (F) is one or two or more kinds selected from the group consisting of phosphoric acid, hydrochloric acid, sulfuric acid, citric acid, succinic acid, and alkali metal salts thereof. For example, the skin cleansing composition of claim 9 or 10, wherein the content of the component (F) is the total of the conversion amount of the acid of the acid and its salt, and it is 0.05 mass% or more and 2 mass in the total composition %the following. For example, the skin cleansing composition according to the first patent application scope further contains, as component (G), 2% by mass or more and 18% by mass or less of 1,3-butanediol, One or more polyhydric alcohols of propylene glycol, dipropylene glycol, sorbitol, glycerol, polyoxypropylene (9) diglyceryl ether, and glycerol derivatives represented by general formula (3), Gly- [O- (PO) _a- (EO) _b- (BO) _c H] ₃ (3) (In the formula, Gly represents a residue from which a hydroxyl group is removed from glycerol, PO represents a propylene oxide group, EO represents a vinyl oxide group, and a and b are PO and The average addition mole number of EO indicates a value of 1 to 50, the mass ratio of PO to EO (PO / EO) is 1/5 to 5/1, BO represents an oxyalkylene group with a carbon number of 4, and c is BO The average added mole number represents the value of 1 to 5). For example, the skin cleansing composition according to the first patent application range, wherein the content of the component (C) is 70% by mass or more and 98% by mass or less in the total composition. For example, the skin cleansing composition of claim 1 in the patent application scope, wherein the content of the styrene-based polymer in the total composition is less than 0.01% by mass. For example, the skin cleansing composition of the first patent application scope, wherein the content of non-ionic surfactants other than components (A) and (B) is based on the total amount of components (A) and (B) Mass ratio is 0.8 or less. For example, the skin cleansing composition of the scope of application for the patent, the content of the oil agent other than the ultraviolet absorber, perfume and preservative in the total composition is relative to the total of component (A) and component (B) The mass ratio of the amount (the above oil agent / ((A) + (B))) is 0.5 or less.