JP2019172656A - Skin cleanser composition - Google Patents

Abstract

To provide skin cleanser compositions that have moderate viscosity, have excellent fineness of foam even in a condition of difficulty of foaming, have excellent foam volume and elasticity, and have no sliminess after rinsing.SOLUTION: Provided is a skin cleanser composition containing the following component (a) to (d). The mass ratio [a/(b+c)] is 0.1 to 1.0, and the mass ratio (d/a) is 0.10 to 0.60. (a) Fatty acid salt having 8 to 22 carbon atoms: 1 to 30% by mass; (b) amphoteric surfactant: 1-30% by mass; (c) acylamino acid type anionic surfactant: 1 to 20% by mass; and (d) polyoxyethylene fatty acid diester type nonionic surfactant represented by formula (1): 1 to 10% by mass, the formula (1) is R-O-(CH-CH-O)-R(where, Rand Rare each independently an acyl group having 10 to 18 carbon atoms, and n is an integer of 50 to 200).SELECTED DRAWING: None

Description

  The present invention relates to a skin cleanser composition such as a facial cleanser, body soap, hand soap and the like. More particularly, the present invention relates to a skin cleansing composition having an appropriate viscosity and excellent in fineness of foam even under difficult foaming conditions, excellent in the amount of foam and foam elasticity, and having no sliminess after rinsing.

In general, in skin cleanser compositions such as facial cleansers, body soaps, hand soaps, soaps that are higher fatty acid alkali salts are used as the main component. This soap is excellent in foaming and foam quality, but when used for makeup cosmetics containing a lot of oil such as foundations, eye makeup products, and lipsticks, foaming is very poor and detergency is demonstrated. There are disadvantages that are not.
Therefore, various cleansing cosmetics have been proposed for the purpose of removing oil as oil stains, and many cleansing cosmetics containing a lot of oil components that are easily compatible with oil stains have been proposed, but conventional cleansing cosmetics contain a lot of oil and can be rinsed after use. Since the oil remained on the skin, a refreshing feel was not obtained. For this reason, a step of washing with a normal cleaning agent is required after use, and washing is performed twice, which may cause problems such as inconvenience in use and a heavy burden on the skin. Therefore, there has been a strong demand for the development of a skin cleanser that can effectively remove oily makeup cosmetics and can give a refreshing feeling after cleansing by only one cleaning.

  As such a detergent, for example, soap, a carbobetaine type amphoteric surfactant, an anionic surfactant, and polyethylene glycol having an average molecular weight of 1000 to 4000 are included to improve the feeling of sliminess when foaming is too easy. A cream-type facial cleanser has been proposed (Patent Document 1). In addition, a composition for cleansing skin has been proposed that contains soap, fatty acid polyethylene glycol ester, and fatty acid ester, which have good foaming and improved foaminess for makeup cosmetics (Patent Document 2).

  All of the above-mentioned cleaning agents have a certain effect on makeup cosmetics, but contain a large amount of inorganic substances such as ultraviolet absorbers, titanium oxide, and zinc oxide as compared with ordinary makeup cosmetics, and For the sunscreen agent with improved adhesion to the skin, the foaming performance is poor and the foam performance is not satisfactory, so that the sufficient effect is not obtained.

  In order to solve such a problem, a detergent composition in which polyglyceryl-10 laurate or alkyl glucoside is contained in a detergent mainly composed of soap has been proposed (Patent Document 3). Although this detergent composition has good foam quality and foam amount with respect to ordinary makeup cosmetics, the foam amount and foam elasticity with respect to the sunscreen agent are not sufficient, and the feeling of slimness remains after rinsing and is not satisfactory.

  As described above, in the conventional technology, in a situation where the detergent is difficult to foam like the skin to which the sunscreen agent is applied, in addition to the fine texture of the foam, the amount of foam, the elasticity of the foam, and the slimy feeling after rinsing The fact is that it has not reached the point where all of the problems are satisfied at the same time. In addition, skin cleanser compositions such as facial cleansers, body soaps, and hand soaps are desired to have an appropriate viscosity from the viewpoint of handleability during use.

JP 2011-213893 A Japanese Patent Laid-Open No. 2006-193838 JP 2008-094812 A

  The present invention solves the above-mentioned problems, and its purpose is to have an appropriate viscosity and excellent foam fineness even under difficult foaming conditions, as well as excellent foam volume and foam elasticity, and slime after rinsing. It is to provide a cleansing composition for skin without feeling.

  In order to achieve the above object, the present inventors have intensively studied and, as a result of combining the specific components shown below, have an appropriate viscosity and are excellent in the fineness of the foam even in a situation where foaming is difficult to occur. The present inventors have found that a skin cleansing composition having excellent foam amount and foam elasticity and no slickness after rinsing can be obtained.

That is, the skin cleansing composition of the present invention contains the following components (a) to (d), and includes the component (a) with respect to the total content of the components (b) and (c). : Mass ratio [a / (b + c)] is 0.1 to 1.0, and mass ratio (d / a) of content of component (d) to content of component (a) is 0. It is a skin cleansing composition characterized by being 10-0.60.
(A) Fatty acid salt having 8 to 22 carbon atoms: 1 to 30% by mass
(B) Amphoteric surfactant: 1 to 30% by mass
(C) Acylamino acid type anionic surfactant: 1 to 20% by mass
(D) Polyoxyethylene fatty acid diester type nonionic surfactant represented by the formula (1): 1 to 10% by mass
R ¹ —O— (CH ₂ —CH ₂ —O) _n —R ² (1)
(In the formula, R ¹ and R ² each independently represent an acyl group having 10 to 18 carbon atoms. N is the average number of moles of ethylene oxide added and represents an integer of 50 to 200.)

  The skin cleanser composition of the present invention has an appropriate viscosity and is excellent in the fineness of the foam even under difficult foaming conditions, and is excellent in the amount of foam and foam elasticity, and has no effect of sliminess after rinsing. Play.

  Embodiments of the present invention will be described below. The skin cleansing composition of the present invention contains at least the components (a) to (d) described above. (A) It demonstrates sequentially from a component.

[(A) component]
The component (a) used in the present invention is a fatty acid salt having 8 to 22 carbon atoms, specifically a salt of a saturated or unsaturated fatty acid having 8 to 22 carbon atoms and an alkali metal, and is generally referred to as soap. It is what is done.
As this alkali metal, potassium and sodium are preferable, and potassium is particularly preferable. The skin cleansing composition of the present invention may be blended with a fatty acid salt prepared in advance, and a saturated or unsaturated fatty acid having 8 to 22 carbon atoms and an alkali in an amount corresponding to the fatty acid. A fatty acid salt may be produced in the composition system by blending with an agent.

  This fatty acid may be a single fatty acid or a mixture, for example, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, arachidic acid, behenic acid, etc. Fatty acids; unsaturated fatty acids such as palmitoleic acid, oleic acid, elaidic acid, linoleic acid, linolenic acid; and mixtures thereof, coconut oil fatty acid, palm oil fatty acid, palm kernel oil fatty acid, beef tallow fatty acid, hardened beef tallow fatty acid, and these Of the mixture. Among these, lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid are particularly preferable in terms of foam fineness and foam elasticity.

  In this invention, content of said (a) component is 1-30 mass% in a composition whole quantity, Preferably it is 9-25 mass%, Most preferably, it is 10-20 mass%. When there is too little content of (a) component, the fineness of a foam and the amount of foam may fall. When the content of the component (a) is too large, a feeling of tension after rinsing may occur.

[Component (b)]
The component (b) used in the present invention is an amphoteric surfactant, for example, a surfactant having a structure having both an N-acyl group or an N-alkyl group, a cationic group, and an anionic group. Agents.
Examples of amphoteric surfactants include alkylbetaines, alkylamidobetaines, alkylhydroxysulfobetaines, alkylamidohydroxysulfobetaines, alkylcarboxymethylhydroxyethylimidazolinium betaines, alkylamidohydroxyethyl amino acid type amphoteric surfactants, alkyliminos. Examples thereof include diacetate.

  The N-acyl group contained in the amphoteric surfactant is, for example, a linear or branched fatty acid residue having 8 to 18 carbon atoms. Examples of the fatty acid in the fatty acid residue include saturated fatty acids such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid; palmitoleic acid, oleic acid, elaidic acid, linoleic acid, linolenic acid And the like, and coconut oil fatty acid, palm kernel oil fatty acid, beef tallow fatty acid, hardened tallow fatty acid and the like, which are mixtures thereof. Among these, lauric acid, myristic acid, palmitic acid, oleic acid, coconut oil fatty acid, and palm kernel oil fatty acid are preferable. Particularly preferred are lauric acid, coconut oil fatty acid, and palm kernel oil fatty acid.

  The N-alkyl group contained in the amphoteric surfactant is, for example, a hydrocarbon group having 8 to 18 carbon atoms, and a mixed alkyl group derived from a mixed fatty acid is also included. Examples thereof include alkyl groups such as caprylyl group, capryl group, lauryl group, myristyl group, palmityl group, stearyl group and oleyl group; mixed alkyl groups such as coconut oil alkyl group, palm kernel oil alkyl group and beef tallow alkyl group. Among these, lauryl group, myristyl group, palmityl group, coconut oil alkyl group, and palm kernel oil alkyl group are preferable. Particularly preferred are lauryl group, coconut oil alkyl group, and palm kernel oil alkyl group.

Specific examples of the component (b) include lauryl betaine, palm oil fatty acid amidopropyl betaine, palm kernel fatty acid amidopropyl betaine, lauryl hydroxysulfobetaine, cocamidopropyl betaine, sodium cocoamphoacetate and the like.
(B) 1 type (s) or 2 or more types can be used for a component.

  In this invention, content of said (b) component is 1-30 mass% in a composition whole quantity, Preferably it is 5-25 mass%, Most preferably, it is 13-23 mass%. When there is too little content of (b) component, the viscosity of a composition, the fineness of foam, and the amount of foam may fall. When there is too much content of (b) component, sliminess will be felt after a rinse and bubble elasticity may fall.

[Component (c)]
The component (c) used in the present invention is an acylamino acid anionic surfactant, which is a surfactant having an amino acid salt structure having an N-acyl group. For example, N-acyl-N-methyl-β-alanine salt, N-acyl-β-alanine salt, N-acyl sarcosine salt, N-acyl glycine salt and the like can be mentioned.
The acyl group is, for example, a group derived from a saturated or unsaturated fatty acid having 6 to 20 carbon atoms, and examples include a lauroyl group, a myristoyl group, a palmitoyl group, a stearoyl group, and an oleoyl group. In addition, an acyl group derived from a mixed fatty acid can be used, and examples of the acyl group derived from the mixed fatty acid include a coconut oil fatty acid acyl group and a palm kernel oil fatty acid acyl group.
Preferred examples of the acyl group include lauroyl group, myristoyl group, coconut oil fatty acid acyl group, and palm kernel oil fatty acid acyl group. Particularly preferred are a lauroyl group, a coconut oil fatty acid acyl group, and a palm kernel oil fatty acid acyl group.

  Examples of counter ions of these acylamino acids include alkali metal salts, alkaline earth metal salts, ammonium salts, alkanolamine salts, amino acid salts and the like.

  Specific examples of the component (c) include sodium cocoyl methyl taurine, sodium cocoyl methyl taurine, sodium cocoyl glutamate, sodium lauroylmethylalanine, and the like. (C) A component can use 1 type (s) or 2 or more types.

  In this invention, content of said (c) component is 1-20 mass% in a composition whole quantity, Preferably it is 3-18 mass%, Most preferably, it is 5-15 mass%. (C) When there is too little content of a component, the fineness of a bubble and bubble elasticity may fall. When there is too much content of (c) component, the amount of foam may fall.

[Component (d)]
The component (d) used in the present invention is a polyoxyethylene fatty acid diester type nonionic surfactant represented by the formula (1).
R ¹ —O— (CH ₂ —CH ₂ —O) _n —R ² (1)
In the formula, R ¹ and R ² are each independently an acyl group having 10 to 18 carbon atoms. As fatty acids constituting R ¹ and R ² , fatty acids having 10 to 18 carbon atoms are preferable, and fatty acids having 12 to 14 carbon atoms are particularly preferable. Further, the fatty acid may be any of saturated, unsaturated, straight chain and branched chain, but straight chain saturated fatty acid is particularly preferable. Furthermore, the fatty acid may be a mixed fatty acid that is a mixture of various fatty acids.
Specific examples of the fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, oleic acid, and coconut oil fatty acid. Lauric acid and myristic acid are preferable, and lauric acid is particularly preferable.

The esterification rate of R ¹ and R ² is preferably 60 to 97%, particularly preferably 70 to 95%, and further preferably 80 to 90%. If the esterification rate is within the above range, sufficient bubble elasticity can be obtained.
In the present specification, the esterification rate is the ratio of the number of hydroxyl groups in which fatty acids are ester-bonded to the total number of hydroxyl groups in component (d), and the saponification value (SV) and acid value (AV) of component (d). The hydroxyl value (OHV) was measured and calculated by the following method.
Esterification rate = [(SV-AV) / (SV-AV + OHV)] × 100
SV, AV, and OHV were measured according to the method described in Japanese Industrial Standard (JIS).
SV; JIS K-0070 4.1
AV; JIS K-0070 3.1
OHV; JIS K-1557 1

  N in Formula (1) is the average added mole number of ethylene oxide, is an integer of 50 to 200, preferably 55 to 150, and particularly preferably 60 to 100.

  (D) A component can use 1 type (s) or 2 or more types.

  In this invention, content of said (d) component is 1-10 mass% in a composition whole quantity, Preferably it is 2-8 mass%, Most preferably, it is 4-6 mass%. If the content of the component (d) is too small, the viscosity of the composition may decrease and the usability may be inferior, and the fineness of the foam, the amount of foam, and the foam elasticity may decrease. If the content is too high, a slimy feeling may occur after rinsing.

  In the present invention, the mass ratio [a / (b + c)] of the content of the component (a) to the total content of the components (b) and (c) is in the range of 0.1 to 1.0. , Preferably in the range of 0.3 to 1.0, particularly preferably in the range of 0.50 to 0.95, and still more preferably in the range of 0.60 to 0.90. If the mass ratio is too small, the fineness of the foam, the amount of foam, and the foam elasticity may be reduced. If the mass ratio is too large, slimming may be felt after rinsing.

  The mass ratio (d / a) of the content of the component (d) to the content of the component (a) is in the range of 0.10 to 0.60, preferably in the range of 0.20 to 0.40. Of these, the range of 0.25 to 0.30 is particularly preferable. If the mass ratio is too small, the amount of foam may decrease, and slime may be felt after rinsing. When the mass ratio is too large, the viscosity of the composition may be lowered and the usability may be inferior, and the fineness of foam, the amount of foam, and the foam elasticity may be lowered.

The skin cleansing composition of the present invention contains a solvent in addition to the components (a) to (d). Examples of such solvents include water, lower alcohols, and lower alcohol aqueous solutions. Examples of water include purified water, ion exchange water, distilled water, RO water, tap water, and industrial water. Examples of the lower alcohol include ethanol, 2-propanol, and ethylene glycol. Among these solvents, water such as purified water is particularly preferable.
A solvent is used in the quantity which adjusts each component of (a)-(d) and the other component which may be contained arbitrarily to predetermined amount. Specifically, the content of the solvent in the present invention is 10 to 70% by mass, preferably 20 to 60% by mass, and particularly preferably 30 to 50% by mass in the total amount of the composition.

  The skin cleansing composition of the present invention can be produced according to a usual method. For example, after preparing a fatty acid potassium salt of component (a) by first mixing potassium hydroxide with a fatty acid so that the neutralization rate is 98 to 99%, (b) an amphoteric surfactant of component (c) The anionic surfactant of the component and the polyoxyethylene fatty acid diester type nonionic surfactant of the component (d) are blended, and then weakly alkaline using citric acid, for example, pH to pH 9.0 to 9.5 By adjusting the above, it is possible to produce the skin cleansing composition of the present invention.

  The skin cleansing composition of the present invention can be used as a facial cleanser, body soap, hand soap and the like. In particular, the skin cleansing composition of the present invention can be suitably used as a cleansing agent because it has good foaming even with respect to makeup cosmetics and sunscreen agents and does not feel slimy after rinsing.

  The skin cleansing composition of the present invention may further contain, in addition to the above components, additives commonly used in skin cleansing agents as long as the effects of the present invention are not impaired.

Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples.
Skin cleansing compositions shown in Tables 1 and 2 were prepared and evaluated by the following methods.
In Tables 1 and 2, the numerical value of each component indicates the mass ratio (% by mass) of each component. [A / (b + c)] represents the mass ratio of the content of the component (a) to the total content of the components (b) and (c), and (d / a) represents (a) The mass ratio of the content of the component (d) to the content of the component is shown. Moreover, content of each component is content converted into an effective part, and is not content of commercial item raw material itself.
Furthermore, the numerical value of “EO” in the component (d) and the component (d ′) is n (average number of added moles of ethylene oxide) in the formula (1). The lauric acid residue is a linear acyl group having 12 carbon atoms, the myristic acid residue is a linear acyl group having 14 carbon atoms, and the stearic acid residue is a linear acyl group having 18 carbon atoms. It is.
The esterification rate (%) in the component (d) and the component (d ′) is as follows.
Polyethylene glycol dilaurate (70E.O.): 85%
Polyethylene glycol dimyristic acid (70EO): 60%
Polyethylene glycol distearate (150 EO): 97%
Polyethylene glycol dilaurate (12E.O.): 70%
Polyethylene glycol stearate (55EO): 38%

(1) Thickening effect Using a B-type viscometer (manufactured by TOKIMEC), the viscosity of each skin cleanser composition at 25 ° C was measured for 100 seconds and evaluated in the following three stages. “○” was evaluated as acceptable.

○: 500 mPa · s or more Δ: 200 to 499 mPa · s
×: 199 mPa · s or less

(2) Fineness of foam 20 females (25 to 43 years old) are panelists, and a commercial BB (Blemish Balm) cream (SPF (Sun Protection Factor); 35, PA ++) is used as a sunscreen. After applying 2 cm in diameter to the part and wiping off the excess, it was massaged for 30 seconds using 0.5 g of the skin cleanser composition so as to blend in with the BB cream. Then, with the right hand wet with water, the fineness of the foam when the massaged part was rubbed 50 times and bubbled was evaluated as follows.
2 points: When the texture of the foam is very fine.
1 point: When the texture of the foam is slightly fine.
0 point: When the texture of the foam is felt rough.

(3) Amount of foam 20 females (25 to 43 years old) as panelists and commercially available BB cream (SPF; 35, PA ++) as a sunscreen agent was applied to the left forearm about 2 cm in diameter. After being wiped off, massage was performed for 30 seconds using 0.5 g of the skin cleansing composition so as to blend with the BB cream. Then, with the right hand wet with water, the amount of foam when the massaged part was rubbed 50 times and bubbled was evaluated as follows.
2 points: A large amount of foam is formed and it is felt that the foam has not disappeared until the end of washing.
1 point: When the amount of bubbles is slightly large and it is felt that some bubbles remain at the end of washing.
0 point: The amount of foam is small, and it is felt that almost no foam remains at the end of washing.

(4) Bubble elasticity 20 females (25 to 43 years old) are panelists, and commercially available BB cream (SPF; 35, PA ++) as a sunscreen agent is applied to the left forearm about 2 cm in diameter. After being wiped off, massage was performed for 30 seconds using 0.5 g of the skin cleansing composition so as to blend with the BB cream. Thereafter, the foam elasticity when foamed by rubbing the massaged part 50 times with a right hand wet with water was evaluated as follows.
2 points: When it is felt that there is elasticity of bubbles.
1 point: When it feels that there is some elasticity of a bubble.
0 points: When it feels that there is no elasticity of bubbles.

(5) Slimming feeling after rinsing 20 women (25 to 43 years old) as panelists, and commercially available BB cream (SPF; 35, PA ++) as a sunscreen agent was applied to the left forearm about 2 cm in diameter, After the excess was wiped off, massage was performed for 30 seconds using 0.5 g of the skin cleansing composition so as to blend with the BB cream. Then, with the right hand wet with water, the massaged part was rubbed 50 times and bubbled. Finally, the slimy feeling after rinsing with running water for 5 seconds was evaluated as follows.
2 points: When you feel that you are not slimy.
1 point: When you feel a little slimy.
0 points: When the user feels slimy.

Each of the above (2) to (5) was evaluated according to the following criteria and shown in Table 1 and Table 2, respectively. “◎” and “◯” were evaluated as acceptable.
◎: Total score is 35 or more ○: Total score is 30 or more and less than 35 △: Total score is 25 or more and less than 30 ×: Total score is less than 25

(Evaluation results)
The skin cleanser compositions of Examples 1 to 6 according to the present invention all have an appropriate viscosity, and are excellent in the fineness of the foam even in a situation where foaming is difficult to occur, and are excellent in the amount of foam and foam elasticity, Furthermore, it was excellent in the lack of sliminess after rinsing.

On the other hand, sufficient performance was not obtained for the skin cleansing compositions of Comparative Examples 1-9.
In Comparative Example 1, since the component (b) was not contained, an appropriate viscosity was not obtained, the fine texture of the foam was lowered, and the amount of foam was insufficient.
In Comparative Example 2, since the component (c) was not contained, the foam elasticity was lowered, and the fine texture of the foam was insufficient.
In Comparative Example 3, since the component (d) was not contained, an appropriate viscosity could not be obtained, the fineness of foam and the amount of foam were lowered, and the foam elasticity was insufficient.
In Comparative Example 4, since a diester type nonionic surfactant having an average addition mole number of ethylene oxide of 12 was blended in place of the component (d), the amount of foam was lowered and the foam elasticity was insufficient. there were.
In Comparative Example 5, the monoester type nonionic surfactant in which the component (b) exceeds the upper limit of the range specified in the present invention and the average added mole number of ethylene oxide is 55 instead of the component (d) Therefore, an appropriate viscosity could not be obtained, the foam elasticity was lowered, and further sliminess was felt after rinsing.

In Comparative Example 6, the component (c) exceeds the upper limit of the range specified in the present invention, and since polyethylene glycol 4000 is blended in place of the component (d), an appropriate viscosity cannot be obtained, and rinsing is performed. Later, sliminess was felt, the fineness of the foam was lowered, and the amount of foam and foam elasticity were insufficient.
In Comparative Example 7, since polyglyceryl-10 laurate is blended in place of the component (d), an appropriate viscosity cannot be obtained, sliminess is felt after rinsing, the amount of foam is reduced, and the foam elasticity is inferior. It was enough.
In Comparative Example 8, since the mass ratio [a / (b + c)] exceeded the upper limit of the range specified in the present invention, the amount of foam and the foam elasticity were lowered, and the fineness of the foam was insufficient.
In Comparative Example 9, since the mass ratio (d / a) was below the lower limit of the range specified in the present invention, the fineness of foam and the amount of foam were lowered, and the foam elasticity was insufficient.

Using the above component (d): polyethylene glycol dilaurate (70E.O.) and the components shown in Tables 3 to 6, skin cleansing compositions for Examples 7 to 10 were prepared.
In addition, the component corresponded to (a) component-(c) component in this invention among the various components shown to Tables 3-6 is shown below.
(A) Component: potassium laurate, potassium myristate, potassium palmitate, potassium stearate (b) component: cocamidopropyl betaine, sodium cocoamphoacetate (c) component: N-cocoyl-N-methyl taurate sodium, N- Lauroyl-N-methyl-β-alanine sodium

[Example 7: Transparent body soap]
By mixing at 80 ° C. with the composition shown in Table 3, a skin cleanser composition (transparent body soap) was obtained. This skin cleanser composition had an appropriate viscosity and was excellent in the fineness of the foam even under conditions where foaming was difficult to occur, and was excellent in the amount of foam and foam elasticity, and there was no slimy feeling after rinsing.
In addition, mass ratio [a / (b + c)] of this skin cleaning composition is 0.91, and mass ratio (d / a) is 0.20.

[Example 8: Pearl-shaped body soap]
By mixing at 80 ° C. with the composition shown in Table 4, a skin cleanser composition (pearl-shaped body soap) was obtained. This skin cleanser composition had an appropriate viscosity and was excellent in the fineness of the foam even under conditions where foaming was difficult to occur, and was excellent in the amount of foam and foam elasticity, and there was no slimy feeling after rinsing.
In addition, mass ratio [a / (b + c)] of this skin cleaning composition is 0.80, and mass ratio (d / a) is 0.33.

[Example 9: Cream cleanser]
By mixing at 80 ° C. with the composition shown in Table 5, a skin cleanser composition (cream cleanser) was obtained. This skin cleanser composition had an appropriate viscosity and was excellent in the fineness of the foam even under conditions where foaming was difficult to occur, and was excellent in the amount of foam and foam elasticity, and there was no slimy feeling after rinsing.
In addition, mass ratio [a / (b + c)] of this skin cleaning composition is 1.0, and mass ratio (d / a) is 0.17.

[Example 10: Pump foam foam cleaning material]
By mixing at 80 ° C. with the composition shown in Table 6, a skin cleanser composition (pump foam foam cleaner) was obtained. This skin cleanser composition had an appropriate viscosity and was excellent in the fineness of the foam even under conditions where foaming was difficult to occur, and was excellent in the amount of foam and foam elasticity, and there was no slimy feeling after rinsing.
In addition, mass ratio [a / (b + c)] of this skin cleaning composition is 1.0, and mass ratio (d / a) is 0.50.

Claims (1)

It contains the following components (a) to (d), and the mass ratio [a / (b + c)] of the content of the component (a) to the total content of the components (b) and (c) is 0. 1.-1.0, and the mass ratio (d / a) of the content of the component (d) to the content of the component (a) is 0.10 to 0.60. Agent composition.
(A) Fatty acid salt having 8 to 22 carbon atoms: 1 to 30% by mass
(B) Amphoteric surfactant: 1 to 30% by mass
(C) Acylamino acid type anionic surfactant: 1 to 20% by mass
(D) Polyoxyethylene fatty acid diester type nonionic surfactant represented by the formula (1): 1 to 10% by mass
R ¹ —O— (CH ₂ —CH ₂ —O) _n —R ² (1)
(In the formula, R ¹ and R ² each independently represent an acyl group having 10 to 18 carbon atoms. N is the average number of moles of ethylene oxide added and represents an integer of 50 to 200.)