CN110354014A - Skin cleansing composition - Google Patents

Abstract

The present invention provides a skin cleansing composition, which has a moderate viscosity, excellent foam texture even when foaming is not easy, excellent foam volume and foam elasticity, and no slippery feeling after rinsing. This composition contains the following (a) component - (d) component. 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 mass % (b) Amphoteric surfactant: 1 to 30 mass % (c) Acylamino acid-based anionic surfactant: 1 to 20 mass % ( d) Polyoxyethylene fatty acid diester type nonionic surfactant represented by formula (1): 1 to 10 mass % R ¹ -O-(CH ₂ -CH ₂ -O) _n -R ² ......(1) R ¹ and R ² each independently represent an acyl group having 10 to 18 carbon atoms, and n represents an integer of 50 to 200.

Description

Skin cleansing composition

technical field

The present invention relates to skin cleansing compositions such as facial cleansers, body washes, and hand soaps. More specifically, it relates to a skin cleanser composition having moderate viscosity, excellent foam texture even when foaming is not easy, foam volume and foam elasticity, and no slippery feeling after rinsing. .

Background technique

In general, in skin cleanser compositions such as facial cleansers, body washes, and hand soaps, soaps containing higher fatty acid alkali salts are used as the main component. This soap is excellent in foaming and foaming quality. On the other hand, when used in makeup cosmetics containing a large amount of oil components such as foundations, eye makeup products, and lipsticks, the foaming is greatly deteriorated and the cleaning power cannot be exhibited.

Therefore, for the purpose of removing the oil component, which is the oily soil, various cleansing cosmetics have been proposed in which a large amount of the oil component that is easily merged with the oily soil is blended. Oil components also remain on the skin, so a refreshing feeling cannot be obtained. Therefore, after use, a process of washing with a normal washing agent is required, and the second washing is performed, which also causes problems such as complicated use and heavy burden on the skin. Therefore, there is a strong desire to develop a skin cleanser that can effectively remove oiliness by only one wash and that can impart a refreshing feeling after washing.

As such a cleaning material, for example, a creamy facial cleanser is proposed, which contains soap, carboxybetaine-type amphoteric surfactant, anionic surfactant and polyethylene glycol with an average molecular weight of 1000-4000, thereby improving the Slippery feeling during foaming or rinsing (Patent Document 1). In addition, a composition for skin cleansing has been proposed, which contains soap, fatty acid polyethylene glycol ester, and fatty acid ester, so that foaming is good, and the foam durability to color cosmetics is improved.

Although the above cleaning materials have a certain degree of effect on any color cosmetics, in fact, compared with ordinary color cosmetics, they contain a large amount of ultraviolet absorbers, inorganic substances such as titanium oxide and zinc oxide, and improve the adhesion to the skin. In terms of sunscreens with high performance, they have poor foaming and unsatisfactory foaming performance, so that sufficient effects cannot be obtained.

In order to solve such a problem, the cleaning composition which contains a polyglycerol-10 laurate or an alkyl glycoside in the cleaning agent which has soap as a main component is proposed (patent document 3). The cleaning composition has good foam quality and foam volume for ordinary color cosmetics, but is insufficient in foam volume and foam elasticity for sunscreen agents, and leaves a slippery feeling after rinsing, which is unsatisfactory.

As mentioned above, in the prior art, in fact, under the condition that the cleaning agent such as the skin coated with sunscreen agent is not easy to foam, it is not possible to simultaneously satisfy the fineness of the texture, the amount of foam, the elasticity of the foam, and the The degree of non-slippery feeling after rinsing. Moreover, it is desirable that it has moderate viscosity from a viewpoint of the handleability at the time of use, for skin cleansing compositions, such as a facial cleanser, a body wash, and a hand wash.

prior art literature

Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 2011-213693

Patent Document 2: Japanese Patent Laid-Open No. 2016-193838

Patent Document 3: Japanese Patent Laid-Open No. 2008-094812

SUMMARY OF THE INVENTION

Technical problem to be solved by the present invention

The present invention solves the above-mentioned technical problems, and its purpose is to provide a skin cleansing composition, which has a moderate viscosity, and is excellent in the fineness of the texture of the foam even under the condition that it is not easy to foam, and at the same time is excellent in the amount of foam and the elasticity of the foam, No slippery feeling after rinsing.

technical means to solve technical problems

In order to achieve the above-mentioned object, the inventors of the present application have conducted careful studies and found that, by combining specific components as shown below, a skin cleansing composition can be obtained which has a moderate viscosity and is not easily foamed The texture of the foam is also excellent, and the foam volume and foam elasticity are excellent, and there is no slippery feeling after rinsing.

That is, the skin cleansing composition of the present invention contains the following components (a) to (d), wherein the content of the component (a) is equal to the respective contents of the components (b) and (c). The total mass ratio [a/(b+c)] is 0.1 to 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,

(a) Fatty acid salts having 8 to 22 carbon atoms: 1 to 30% by mass

(b) Amphoteric surfactant: 1 to 30% by mass

(c) Acylamino acid-based anionic surfactant: 1 to 20% by mass

(d) Polyoxyethylene fatty acid diester type nonionic surfactant represented by 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, and n is the average number of moles of ethylene oxide added, which represents an integer of 50 to 200.

Invention effect

The skin cleansing composition of the present invention has the following effects: it has a moderate viscosity, and is excellent in the fineness of the foam even in a state where foaming is not easy, and at the same time, it is excellent in the amount of foam and the elasticity of the foam, and there is no slippery feeling after rinsing.

Detailed ways

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

[(a) Ingredient]

The component (a) used in the present invention is a salt of a fatty acid having 8 to 22 carbon atoms, more specifically, a salt of a saturated or unsaturated fatty acid having 8 to 22 carbon atoms and an alkali metal, and is usually referred to as for soap.

As the alkali metal, potassium and sodium are preferable, and potassium is particularly preferable. In the skin cleansing composition of the present invention, a substance prepared in advance as a fatty acid salt may be blended, or a saturated or unsaturated fatty acid having 8 to 22 carbon atoms and an amount corresponding to the fatty acid may be blended. Alkaline agent, thereby generating fatty acid salts in the system of the composition.

The fatty acid may be a single fatty acid or a mixture, and examples thereof include saturated fatty acids such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, arachidic acid, and behenic acid. ; Unsaturated fatty acids such as palmitoleic acid, oleic acid, elaidic acid, linoleic acid, linolenic acid; and coconut oil fatty acid, palm oil fatty acid, palm kernel oil fatty acid, tallow fatty acid, hardened tallow which are mixtures of these acids Fatty acids and mixtures of these acids. Among them, lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid are particularly preferred from the viewpoint of the fineness of the foam and the elasticity of the foam.

In this invention, content of the said (a) component is 1-30 mass % in the whole composition, Preferably it is 9-25 mass %, Especially preferably, it is 10-20 mass %. When the content of the component (a) is too small, the fineness of the foam or the amount of the foam may decrease. When the content of the component (a) is too large, a feeling of tightness after rinsing may occur.

[(b) Ingredient]

The component (b) used in the present invention is an amphoteric surfactant, and examples thereof include surfactants having a structure including an N-acyl group or an N-alkyl group, a cationic group, and an anionic group.

Examples of the amphoteric surfactant include alkylbetaines, alkylamide betaines, alkylhydroxysulfobetaines, alkylamidehydroxysulfobetaines, and alkylcarboxymethylhydroxyethylimidazolium betaines , Alkylamide hydroxyethyl amino acid amphoteric surfactant, alkyl iminodiacetate, etc.

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

The N-alkyl group contained in the above-mentioned amphoteric surfactant is, for example, a hydrocarbon group having 8 to 18 carbon atoms, and also includes a mixed alkyl group derived from a mixed fatty acid. For example, alkyl groups such as octanoyl group, capryl group, lauryl group, myristyl group, palm group, stearyl group, and oleyl group; mixed alkyl groups such as coconut oil alkyl group, palm kernel oil alkyl group, and tallow alkyl group can be mentioned. Among them, lauryl group, myristyl group, palm group, coconut oil alkyl group and palm kernel oil alkyl group are preferable. Lauryl, coconut oil alkyl, palm kernel oil alkyl are particularly preferred.

Specific examples of the component (b) include lauryl betaine, coconut oil fatty acid amidopropyl betaine, palm kernel oil fatty acid amidopropyl betaine, lauryl hydroxysulfobetaine, and cocamidopropyl Betaine, sodium cocoamphoacetate, etc.

(b) A component can be used 1 type or 2 or more types.

In this invention, content of the said (b) component is 1-30 mass % in the whole composition, Preferably it is 5-25 mass %, Especially preferably, it is 13-23 mass %. When the content of the component (b) is too small, the viscosity of the composition, the fineness of the foam, and the amount of foam may decrease. When there is too much content of (b) component, it may feel slippery after rinsing, and foam elasticity may fall.

[(c) Ingredient]

The component (c) used in the present invention is an acylamino acid-based 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 sarcosinate salt, N-acyl glycinate salt, etc. are 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 thereof 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 a mixed fatty acid include a coconut oil fatty acid acyl group, a palm kernel oil fatty acid acyl group, and the like.

As an acyl group, a lauroyl group, a myristoyl group, a coconut oil fatty acid acyl group, a palm kernel oil fatty acid acyl group, etc. are preferably mentioned. Particularly preferred are lauroyl groups, coconut oil fatty acid acyl groups, and palm kernel oil fatty acid acyl groups.

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, and lauroyl methyl alanine. Sodium, etc. (c) A component can be used 1 type or 2 or more types.

In this invention, content of the said (c) component is 1-20 mass % in the whole composition, Preferably it is 3-18 mass %, Especially preferably, it is 5-15 mass %. When the content of the component (c) is too small, the fineness of the foam and the elasticity of the foam may decrease. When the content of the component (c) is too large, the amount of foam may decrease.

[(d) Ingredient]

The component (d) used in the present invention is a polyoxyethylene fatty acid diester type nonionic surfactant represented by 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 the fatty acid constituting R ¹ and R ² , a fatty acid having 10 to 18 carbon atoms is preferable, and a fatty acid having 12 to 14 carbon atoms is particularly preferable. In addition, the fatty acid may be saturated, unsaturated, linear, or branched, but linear saturated fatty acids are particularly preferred. Furthermore, the fatty acid may be a mixed fatty acid which 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, coconut oil fatty acid, and the like. Lauric acid and myristic acid are preferred, and lauric acid is particularly preferred.

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%. When the esterification ratio is within the above-mentioned range, sufficient foam elasticity can be obtained.

In this specification, the esterification rate is the ratio of the number of hydroxyl groups bonded to the fatty acid ester to the total number of hydroxyl groups in the component (d), and is the halogenation value (SV), acid value (AV), hydroxyl value for (d) (OHV) was measured, and the value calculated by the method shown below.

Esterification rate=[(SV-AV)/(SV-AV+OHV)]×100

SV, AV, and OHV are measured based on the method described in Japanese Industrial Standards (JIS).

SV; JIS K-0070 4.1

AV; JIS K-0070 3.1

OHV; JIS K-1557 1

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

(d) A component can be used by 1 type or 2 or more types.

In this invention, content of the said (d) component is 1-10 mass % in the whole composition, Preferably it is 2-8 mass %, Especially preferably, it is 4-6 mass %. When the content of the component (d) is too small, the viscosity of the composition may decrease, and the usability may be poor, and further, the fineness of the foam, the amount of foam, and the elasticity of the foam may decrease. When the content is too large, a slippery 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 of the respective contents of the component (b) and the component (c) is in the range of 0.1 to 1.0, preferably 0.3 In the range of -1.0, it is especially preferable to exist in the range of 0.50-0.95, and it is still more preferable to exist in the range of 0.60-0.90. If the mass ratio is too small, the fineness of the foam, the amount of foam, and the elasticity of the foam may decrease, and if the mass ratio is too large, it may feel slippery after rinsing.

Moreover, the mass ratio (d/a) of the content of the component (d) with respect 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, particularly preferably in the range of 0.25 to 0.30 . If the mass ratio is too small, the amount of foam may decrease, and it may feel slippery after rinsing. When the mass ratio is too large, the viscosity of the composition may decrease, and the usability may be poor, and further, the fineness of the foam, the amount of foam, and the elasticity of the foam may decrease.

In addition to each component of the above-mentioned (a)-(d), the skin cleansing composition of this invention contains a solvent. As this solvent, water, a lower alcohol, and a lower alcohol aqueous solution are mentioned. As water, purified water, ion-exchanged water, distilled water, RO water, tap water, industrial water, etc. are mentioned, for example. As a lower alcohol, ethanol, 2-propanol, ethylene glycol, etc. are mentioned, for example. Among these solvents, water such as purified water is particularly preferable.

The solvent is used in an amount adjusted to a predetermined amount of each of the components (a) to (d) and other components that may be optionally contained. Specifically, content of the solvent in this invention is 10-70 mass % in the whole composition, Preferably it is 20-60 mass %, Especially preferably, it is 30-50 mass %.

The skin cleansing composition of the present invention can be prepared by a usual method. For example, first, potassium hydroxide is mixed with fatty acid so that the neutralization rate may be 98 to 99% to prepare the fatty acid potassium salt of the component (a), and then the amphoteric surfactant of the component (b), (c) are blended. ) component anionic surfactant and (d) component polyoxyethylene fatty acid diester type nonionic surfactant, and then use citric acid to adjust the pH to a weak alkaline, for example, pH 9.0 to 9.5, thereby preparing the present invention Invention skin cleansing composition.

The skin cleansing composition of the present invention can be used as a facial cleanser, a body wash, a hand soap, and the like. In particular, the skin cleansing composition of the present invention can be suitably used as a cleansing agent because of good foaming and no slippery feeling after rinsing even for color cosmetics and sunscreens.

The skin cleansing composition of the present invention may further contain additives commonly used in skin cleansing agents, in addition to the above-mentioned components, within a range that does not impair the effects of the present invention.

Example

Hereinafter, the present invention will be described more specifically with reference to Examples and Comparative Examples.

The skin cleanser compositions shown in Tables 1 and 2 were prepared and evaluated by the following methods.

In addition, in Table 1 and Table 2, the numerical value of each component represents the mass ratio (mass %) of each component. In addition, [a/(b+c)] represents the mass ratio of the content of the component (a) to the total of the contents of the component (b) and the component (c), and (d/a) represents the content of the component (d) The mass ratio with respect to the content of the component (a). In addition, the content of each component is the content converted into an active ingredient, and is not the content of a commercial item raw material itself.

Furthermore, the numerical value of "E.O." of the (d) component and (d') component is n (the average number of moles of ethylene oxide added) in the formula (1). In addition, the lauric acid residue is a straight-chain acyl group having 12 carbon atoms, the myristic acid residue is a straight-chain acyl group having 14 carbon atoms, and the stearic acid residue is a straight-chain acyl group having 18 carbon atoms. Acyl.

The esterification ratios (%) of (d) component and (d') component are as follows.

Polyethylene glycol dilaurate (70E.O.): 85%

Polyethylene glycol dimyristate (70E.O.): 60%

Polyethylene glycol distearate (150E.O.): 97%

Polyethylene glycol dilaurate (12E.O.): 70%

Polyethylene glycol stearate (55E.O.): 38%

(1) Thickening effect

Using a Brookfield viscometer (manufactured by TOKIMEC Corporation), the viscosity at 25° C. of each skin cleansing composition was measured for a measurement time of 100 seconds, and the following three grades were evaluated. In addition, "○" was evaluated as a pass.

○: 500mPa·s or more

△: 200～499mPa·s

×: 199mPa·s or less

(2) The fineness of the texture of the foam

20 women (25 to 43 years old) were used as panelers, and a commercially available BB (Blemish Balm) cream (SPF (Sun Protection Factor) with a diameter of about 2 cm was applied to the left forearm as a sunscreen. ); 35, PA++), after wiping off the excess, massage with 0.5 g of the skin cleanser composition for 30 seconds to blend with the BB cream. Then, the right hand was wetted with water, and the massaged part was rubbed 50 times with the right hand, and the fineness of the foam at the time of foaming was evaluated by the following method.

2 points: When the texture of the foam feels very fine;

1 point: when the texture of the foam feels slightly fine;

0 points: When the texture of the foam is felt rough.

(3) The amount of foam

20 women (25 to 43 years old) were tested, and a commercially available BB cream (SPF; 35, PA++) as a sunscreen agent with a diameter of about 2 cm was applied to the left forearm, and the excess part was wiped off. , massage with 0.5g of the skin cleanser composition for 30 seconds to blend with the BB cream. Then, the right hand was wetted with water, and the massaged part was rubbed 50 times with the right hand, and the amount of foam at the time of foaming was evaluated in the following manner.

2 points: It is felt that a large amount of foam is formed until the foam does not disappear at the end of washing;

1 point: The amount of foam is felt to be slightly larger, and there is some foam remaining at the end of cleaning;

0 points: When the amount of foam is felt to be small and the foam hardly remains at the end of washing.

(4) Foam elasticity

20 women (25 to 43 years old) were tested, and a commercially available BB cream (SPF; 35, PA++) as a sunscreen agent with a diameter of about 2 cm was applied to the left forearm, and the excess part was wiped off. , massage with 0.5g of the skin cleanser composition for 30 seconds to blend with the BB cream. Then, the right hand was wetted with water, and the massaged part was rubbed 50 times with the right hand, and the foam elasticity at the time of foaming was evaluated in the following manner.

2 points: when foam elasticity is felt;

1 point: When feeling slightly foamy elasticity;

0 points: When no foam elasticity is felt.

(5) Slippery feeling after rinsing

20 women (25 to 43 years old) were tested, and a commercially available BB cream (SPF; 35, PA++) as a sunscreen agent with a diameter of about 2 cm was applied to the left forearm, and the excess part was wiped off. , massage with 0.5g of the skin cleanser composition for 30 seconds to blend with the BB cream. Then, wet your right hand with water, and rub the massaged part with your right hand 50 times back and forth to make it lather. Finally, the slipperiness after rinsing with running water for 5 seconds was evaluated in the following manner.

2 points: when there is no slippery feeling;

1 point: when feeling slightly slippery;

0 points: When feeling slippery.

The above-mentioned (2) to (5) were evaluated by the following criteria, respectively, and shown in Table 1 and Table 2, respectively. In addition, "⊚" and "◯" were evaluated as acceptable.

◎: The total score is 35 points or more

○: The total score is more than 30 points and less than 35 points

△: The total score is more than 25 points and less than 30 points

×: The total score is less than 25 points

(Evaluation results)

The skin cleansing compositions of Examples 1 to 6 of the present invention all have moderate viscosity, and are excellent in fineness and fineness of foam even under the condition that foaming is not easy, and at the same time, the amount of foam and the elasticity of foam are excellent, and the amount of foam after rinsing is excellent. The degree of non-slippery feeling is excellent.

On the other hand, the skin cleansing compositions of Comparative Examples 1 to 9 did not obtain sufficient performance.

In Comparative Example 1, since the component (b) was not contained, an appropriate viscosity was not obtained, the fineness of the foam was lowered, and the amount of foam was insufficient.

In Comparative Example 2, since the component (c) was not contained, the elasticity of the foam decreased, and the fineness 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 the foam and the amount of foam decreased, and the foam elasticity was insufficient.

In Comparative Example 4, since the diester-type nonionic surfactant having an average added mole number of ethylene oxide of 12 was blended in place of the component (d), the amount of foam decreased and the foam elasticity was insufficient.

In Comparative Example 5, since the component (b) exceeds the upper limit of the range specified in the present invention, a monoester type nonionic surfactant having an average added mole number of ethylene oxide of 55 is blended in place of (d). ) component, so that moderate viscosity could not be obtained, foam elasticity was reduced, and it felt slippery after rinsing.

In Comparative Example 6, since the component (c) exceeding the upper limit of the range specified in the present invention was contained, and polyethylene glycol 4000 was blended in place of the component (d), a moderate viscosity could not be obtained, and it felt slippery after rinsing. , the fineness of the foam texture decreases, and the amount of foam and the elasticity of the foam are insufficient.

In Comparative Example 7, since polyglycerol-10 laurate was blended in place of the component (d), a moderate viscosity was not obtained, and after rinsing, it felt slippery, the amount of foam decreased, and the foam elasticity was insufficient.

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 elasticity of the foam decreased, and the fineness of the foam was insufficient.

In Comparative Example 9, since the mass ratio (d/a) was lower than the lower limit of the range specified in the present invention, the fineness of the foam and the amount of foam decreased, and the foam elasticity was insufficient.

Using the above-mentioned component (d): polyethylene glycol dilaurate (70E.O.) and the components shown in Tables 3 to 6, the skin cleansing compositions of Examples 7 to 10 were prepared.

In addition, among the various components shown in Tables 3-6, the components corresponding to (a) component - (c) component of this invention are shown below.

(a) Ingredient: potassium laurate, potassium myristate, potassium palmitate, potassium stearate

(b) Component: cocamidopropyl betaine, sodium cocoamphoacetate

(c) Ingredient: Sodium N-cocoyl-N-methyl taurate, sodium N-lauroyl-N-methyl-β-alanine

[Example 7: Transparent Body Wash]

By mixing at 80 degreeC with the composition shown in Table 3, the cleansing composition for skins (transparent body wash) was obtained. The skin cleansing composition has a moderate viscosity, and is excellent in fineness of foam even in a state where foaming is not easy, and at the same time, it is excellent in the amount of foam and the elasticity of foam, and there is no slippery feeling after rinsing.

Moreover, the mass ratio [a/(b+c)] of this skin cleansing composition was 0.91, and the mass ratio (d/a) was 0.20.

[table 3]

Composition (mass %) Polyethylene glycol dilaurate (70E.O.) 2.00 Potassium Laurate 5.00 Potassium myristate 3.00 Potassium Palmitate 1.00 Potassium Stearate 1.00 Cocamidopropyl Betaine 6.00 Sodium N-cocoyl-N-methyltaurate 5.00 Cocamide MEA 0.50 Polyquaternium-51 0.05 Glycerol 5.00 EDTA-2Na 0.01 Hydroxyethyl cellulose 0.50 spices 0.05 water The remaining part total 100

[Example 8: Pearlescent Body Wash]

By mixing at 80 degreeC with the composition shown in Table 4, the cleansing composition for skins (pearl-like body wash) was obtained. The skin cleansing composition has a moderate viscosity, and is excellent in fineness of foam even in a state where foaming is not easy, and at the same time, it is excellent in the amount of foam and the elasticity of foam, and there is no slippery feeling after rinsing.

Moreover, the mass ratio [a/(b+c)] of this skin cleansing composition was 0.80, and the mass ratio (d/a) was 0.33.

[Table 4]

Composition (mass %) Polyethylene glycol dilaurate (70E.O.) 4.00 Potassium myristate 10.00 Potassium Palmitate 2.00 Cocamidopropyl Betaine 6.00 Sodium N-cocoyl-N-methyltaurate 9.00 Polyquaternium-7 0.50 Propylene Glycol Laurate 1.00 Glycerol 20.00 EDTA-2Na 0.01 Ethylene Glycol Distearate 2.00 spices 0.05 water The remaining part total 100

[Example 9: Creamy Facial Cleanser]

The composition shown in Table 5 was mixed at 80 degreeC, and the cleansing composition for skins (paste facial cleanser) was obtained by mixing. The skin cleansing composition has a moderate viscosity, and is excellent in fineness of foam even in a state where foaming is not easy, and at the same time, it is excellent in the amount of foam and the elasticity of foam, and there is no slippery feeling after rinsing.

Moreover, the mass ratio [a/(b+c)] of this skin cleansing composition was 1.0, and the mass ratio (d/a) was 0.17.

[table 5]

Composition (mass %) Polyethylene glycol dilaurate (70E.O.) 4.00 Potassium Laurate 2.00 Potassium myristate 14.00 Potassium Palmitate 4.00 Potassium Stearate 4.00 Sodium Cocoamphoacetate 8.00 Sodium N-cocoyl-N-methyltaurate 16.00 Polyquaternium-7 0.50 PPG-52 Butyl Ether 3.00 Glycerol 25.00 EDTA-2Na 0.01 Ethylene Glycol Distearate 2.00 spices 0.05 water The remaining part total 100

[Example 10: Pressure pump foaming foam cleaning material]

By mixing at 80 degreeC with the composition shown in Table 6, the cleansing composition for skin (pump foaming cleansing material) was obtained. The skin cleansing composition has a moderate viscosity, and is excellent in fineness of foam even in a state where foaming is not easy, and at the same time, it is excellent in the amount of foam and the elasticity of foam, and there is no slippery feeling after rinsing.

Moreover, the mass ratio [a/(b+c)] of this skin cleansing composition was 1.0, and the mass ratio (d/a) was 0.50.

[Table 6]

Composition (mass %) Polyethylene glycol dilaurate (70E.O.) 2.00 Potassium Laurate 2.00 Potassium myristate 2.00 Cocamidopropyl Betaine 1.00 Sodium N-lauroyl-N-methyl-β-alanine 3.00 Glycerol 10.00 Sodium citrate 0.02 citric acid 0.05 EDTA-2Na 0.01 water The remaining part total 100

Claims (1)

1. a kind of skin cleansing composition, which is characterized in that containing following (a) ingredient~(d) ingredients, (a) ingredient Content is 0.1~1.0 relative to the mass ratio [a/ (b+c)] of (b) ingredient and the total of each content of (c) ingredient, (d) ingredient Content is 0.10~0.60 relative to the mass ratio (d/a) of the content of (a) ingredient,

(a) fatty acid salt that carbon atom number is 8~22: 1~30 mass %

(b) amphoteric surfactant: 1~30 mass %

(c) acylamino acid analog anion surfactants: 1~20 mass %

(d) two ester type nonionic surfactant of polyoxyethylene fatty acid represented by formula (1): 1~10 mass %

R¹-O-(CH₂-CH₂-O)_n-R²······(1)

In formula, R¹And R²Separately indicate that carbon atom number is 10~18 acyl group, n is the average addition mole of ethylene oxide Number indicates 50~200 integer.