WO2014054493A1

WO2014054493A1 - Skin cleansing agent composition

Info

Publication number: WO2014054493A1
Application number: PCT/JP2013/076004
Authority: WO
Inventors: 瑠奈山口
Original assignee: ライオン株式会社
Priority date: 2012-10-01
Filing date: 2013-09-26
Publication date: 2014-04-10
Also published as: PH12015500709A1; KR101981835B1; JPWO2014054493A1; MY183866A; KR20150067127A; JP5959659B2

Abstract

Provided is a skin cleansing agent composition comprising (A) a fatty acid salt component comprising (A1) a lauric acid salt, (A2) a myristic acid salt and (A3) a palmitic acid salt, (B) an amphoteric surfactant, (C) at least one component selected from a specific copolymer and a specific crosspolymer, and (D) a copolymer composed of (d1) a dimethyldiallyl ammonium chloride monomer unit and/or (d2) an acrylic acid monomer unit and/or an acrylamide monomer unit, wherein the content of the component (A) is 5 to 25 mass%, the contents of the components (A1), (A2) and (A3) are specified amounts relative to the total content, i.e., 100 parts by mass, of the components (A1), (A2) and (A3), and the mass content of the component (C) to the mass content of the component (D), i.e., (C)/(D), is 0.2 to 5.

Description

Skin cleanser composition

The present invention relates to a skin cleanser composition.

The speed of foaming and the amount of foam of the skin cleanser composition are one of important product qualities from the viewpoint of satisfaction of the cleaning power for consumers. In recent years, an out bath agent such as a body cream in which oil or silicone is blended is often used (see Patent Document 1), and there is a problem that foaming of the skin cleansing composition deteriorates. There is a need for a skin cleansing composition that foams well even when it is used on skin where oil or silicone or other dirt is present.

Examples of the method for improving the foaming of the skin cleansing composition include a method for increasing the amount of the cleaning agent (anionic surfactant, amphoteric surfactant, nonionic surfactant, etc.). A body wash containing a long-chain fatty acid, N-acyl-α-alanine, a polyhydric alcohol, a polymer compound, an inorganic salt, an amphoteric surfactant, and an acylamino acid alkali metal. A composition (see Patent Document 2), a skin cleansing composition (see Patent Document 3) containing a silicate having a hemoglobin aggregation action and a fatty acid salt, and the like have been proposed.
However, these cleaning compositions have a problem that they become sticky during rinsing, and feel irritating to the skin such as feeling hard to rinse, feeling sticky after towel drying, and feeling of skin firmness. Also, the foaming speed and the amount of foam were not satisfactory.

In order to eliminate the feeling of tightness of the skin, there has been proposed a cleaning composition that improves the mildness to the skin by using polyethylene glycol and a specific hypoallergenic surfactant together (Patent Documents 4 and 4). 5).
However, when these detergent compositions are used, there is a problem that unpleasant “slimming” occurs at the time of washing, and not only the rinsing property is impaired, but also a sticky feeling is produced after drying.

Therefore, the present situation is that there is a strong demand for providing a skin cleanser composition that is fast in foaming, has a large amount of foam, is excellent in rinsing properties, and does not give a sticky feeling or a tight feeling after drying.

JP 2010-235469 A International Publication No. 2004/098558 Pamphlet JP 2006-83140 A JP 2001-072998 A JP-A-9-13096

This invention makes it a subject to solve the said various problems in the past and to achieve the following objectives. That is, an object of the present invention is to provide a skin cleansing composition that has quick foaming, a large amount of foam, excellent rinsing properties, and does not give a sticky feeling or a sticky feeling after drying.

In order to solve the above-mentioned problems, the present inventor earnestly studied and as a result, obtained the following knowledge. (A) (A1) laurate, (A2) myristate, and (A3) fatty acid salt consisting of palmitate, (B) amphoteric surfactant, (C) (c1) (meta) Copolymer and cloth comprising monomer units consisting of acrylic acid, (c2) alkyl (meth) acrylate, and (c3) at least one selected from polyoxyethylene alkyl ether of (meth) acrylic acid and vinyl neodecanoate A skin cleanser composition comprising at least one selected from polymers, and (D) (d1) dimethyldiallylammonium chloride, and (d2) a copolymer comprising at least one monomer unit of acrylic acid and acrylamide. The content of the component (A) is a specific amount, and the component (A1) and the component (A2) When the total content of the component (A3) and the component (A3) is 100 parts by mass, the content of the component (A1), the component (A2), and the component (A3) It is excellent in the speed and the amount of foam, does not produce a feeling of tension after drying, and by making the content mass ratio of the component (C) and the component (D) a specific ratio, it is excellent in rinsing properties, It was found that there was no stickiness after drying, and the present invention was completed.

The present invention is based on the above findings by the present inventor, and the skin cleansing composition of the present invention as a means for solving the above problems is
A fatty acid salt comprising (A) (A1) laurate, (A2) myristate, and (A3) palmitate,
(B) an amphoteric surfactant;
(C) (c1) (meth) acrylic acid, (c2) alkyl (meth) acrylate, (c3) (meth) acrylic acid polyoxyethylene alkyl ether and at least one selected from vinyl neodecanoate, At least one selected from a copolymer comprising a monomer unit consisting of
(D) (d1) dimethyldiallylammonium chloride, and (d2) a copolymer comprising at least one monomer unit of acrylic acid and acrylamide.
The content of the component (A) is 5% by mass to 25% by mass,
When the total content of the component (A1), the component (A2), and the component (A3) is 100 parts by mass, the content of the component (A1) is 25 parts by mass to 45 parts by mass, The content of the component (A2) is 45 to 60 parts by mass, and the content of the component (A3) is 5 to 20 parts by mass.
The mass ratio of the component (C) and the component (D) is (C) / (D) = 0.2-5.

According to the present invention, the above-described problems can be achieved by solving the conventional problems, the foaming is fast, the amount of foam is large, the rinsing property is excellent, and the skin is clean and does not feel sticky after drying. An agent composition can be provided.

(Skin cleansing composition)
The skin cleansing composition of the present invention comprises a fatty acid salt (hereinafter sometimes referred to as “component (A)”), an amphoteric surfactant (hereinafter sometimes referred to as “component (B)”), From a co-copolymer and a cross-polymer containing monomer units consisting of (meth) acrylic acid, alkyl (meth) acrylate, and at least one selected from (meth) acrylic acid polyoxyethylene alkyl ether and vinyl neodecanoate A copolymer comprising at least one selected from the above (hereinafter sometimes referred to as “component (C)”) and dimethyldiallylammonium chloride and at least one monomer unit of acrylic acid and acrylamide (hereinafter referred to as “(D )), Which may be referred to as “components”), and, if necessary, further other components

<(A) component>
The fatty acid salt as the component (A) includes laurate (hereinafter sometimes referred to as “(A1) component”), myristate (hereinafter sometimes referred to as “(A2) component”), and It consists of palmitate (hereinafter sometimes referred to as “component (A3)”).

The salt is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include alkali metal salts, amine salts and amino acid salts.

There is no restriction | limiting in particular as said alkali metal salt, According to the objective, it can select suitably, For example, sodium salt, potassium salt, etc. are mentioned.
The amine salt is not particularly limited and may be appropriately selected depending on the intended purpose. For example, ammonium salt, alkanolamine salt (for example, monoethanolamine salt, diethanolamine salt, triethanolamine salt, 2-amino- 2-methylpropanol, 2-amino-2-methylpropanediol, etc.).
There is no restriction | limiting in particular as said amino acid salt, According to the objective, it can select suitably, For example, a lysine salt, an arginine salt, etc. are mentioned.
Among these, alkali metal salts are preferable and potassium salts are particularly preferable from the viewpoint of excellent foam amount.

Among these, the component (A1) is preferably potassium laurate, the component (A2) is preferably potassium myristate, and the component (A3) is preferably potassium palmitate.

The component (A) may be a commercially available product or a product prepared by neutralizing a fatty acid with the salt.

The content of the component (A1), the component (A2), and the component (A3) is excellent in the speed of foaming and the amount of foam, so the component (A1), the component (A2), and the component (A) When the total content of component A3) is 100 parts by mass, the content of component (A1) is 25 to 45 parts by mass, and the content of component (A2) is 45 to 60 parts by mass. And the content of the component (A3) is 5 to 20 parts by mass,
The content of the component (A1) is 30 parts by mass to 40 parts by mass, the content of the component (A2) is 50 parts by mass to 55 parts by mass, and the content of the component (A3) is 10 parts by mass. ~ 15 parts by weight are preferred.
When the content is outside the numerical range, the foaming speed and the amount of foam may be inferior, and a feeling of tension may occur after drying.

The content of the component (A) is preferably 5% by mass to 25% by mass, more preferably 10% by mass to 20% by mass, and particularly preferably 10% by mass to 15% by mass from the viewpoint that a feeling of tension does not occur after drying. preferable. When the content of the component (A) is less than 5% by mass, the foaming speed and the amount of foam may be inferior, and when it exceeds 25% by mass, the rinsing property is inferior and a feeling of tension is generated after drying. There are things.
The content of the component (A) means the total content of the component (A1), the component (A2), and the component (A3).

<(B) component>
There is no restriction | limiting in particular as an amphoteric surfactant as said (B) component, Although it can select suitably according to the objective, A betaine type | mold amphoteric surfactant is preferable from the point which is excellent in foam amount.

Specific examples of the component (B) include an imidazoline type such as 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine (hereinafter sometimes referred to as “sodium cocoamphoacetate”); lauric acid amide Amidopropyl betaine type such as propyl betaine (hereinafter sometimes referred to as “lauramidopropyl betaine”), palm oil fatty acid amidopropyl betaine (hereinafter sometimes referred to as “cocamidopropyl betaine”); lauryldimethylaminoacetic acid Aminoacetic acid betaine type such as betaine (hereinafter sometimes referred to as “laurylbetaine”), stearyldimethylaminoacetic acid betaine (hereinafter sometimes referred to as “stearylbetaine”); laurylhydroxysulfobetaine, laurylamidopropylhydroxy The Sulfobetaine such Hobetain; and the like. These may be used alone or in combination of two or more.
Among these, lauryl hydroxysulfobetaine, lauric acid amidopropyl betaine, and coconut oil fatty acid amidopropyl betaine are preferable, and lauryl hydroxysulfobetaine is particularly preferable in terms of excellent foam amount and rinsing properties.

As the component (B), a commercially available product can be used. Specific examples thereof include trade names such as Enajicol C-40H (manufactured by Yushi Kogyo Co., Ltd.), Softazoline CH, Softazoline CL-R (Kawaken Fine Chemical). Co., Ltd.), sodium cocoamphoacetate such as Amphitol 20YB (made by Kao Corporation); Laflamidopropyl betaine such as Softazolin LPB (made by Kawaken Fine Chemicals Co., Ltd.), Amphitol 20AB (made by Kao Corporation); TEGO BETAINE CK OK ( Degussa), Amphitol 55AB (Kao Co., Ltd.), NIKKOL AM-3130N (Nikko Chemicals Co., Ltd.), MIRATAINE BET C-30 (Rhodia Nikka Co., Ltd.), etc .; Lauryl betaines such as Toll 24B (manufactured by Kao Corporation), NIKKOL AM-301 (manufactured by Nikko Chemicals Co., Ltd.); stearyl betaines such as Anhitoal 86B (manufactured by Kao Corporation); Sulfobetaines; lauric acid amidopropyl hydroxysulfobetaines such as Softazoline LSE and Softazoline LSE-R (manufactured by Kawaken Fine Chemical Co., Ltd.); and the like.

The content of the component (B) is preferably from 0.1% by mass to 10% by mass, and preferably from 0.5% by mass to 5% by mass from the viewpoint that the foam amount and rinsing properties are excellent and no sticky feeling after drying occurs. Is more preferable. If the content of the component (B) is less than 0.1% by mass, the foaming speed and the amount of foam may be inferior. If it exceeds 10% by mass, the rinsing property is inferior, and the sticky feeling after drying. May occur.

<(C) component>
At least one of the copolymer and the cross polymer of the component (C) is (c1) (meth) acrylic acid, (c2) alkyl (meth) acrylate, and (c3) (meth) acrylic acid polyoxyethylene alkyl ether. And at least one selected from vinyl neodecanoate, and at least one selected from copolymers and cross-polymers comprising monomer units. By blending the component (C) with the skin cleansing composition, the speed of foaming, the amount of foam, and the lack of stickiness after drying can be improved.

In the present invention, the “cross polymer” is a polymer having at least a monomer unit composed of (c1), (c2) and (c3) as a main skeleton and having a crosslinked structure.
In the present invention, “(meth) acrylic acid” means “acrylic acid” or “methacrylic acid”.

Examples of the copolymer of the component (C) include (meth) acrylic acid / alkyl (meth) acrylate / (meth) acrylic acid polyoxyethylene alkyl ether copolymer, (meth) acrylic acid / alkyl (meth) acrylate / Examples include vinyl neodecanoate copolymers.
Specific examples of the (meth) acrylic acid / (meth) acrylic acid alkyl / (meth) acrylic acid polyoxyethylene alkyl ether copolymer include Aculine 22 (Acrylates / Steareth Methacrylate Copolymer) (Rohm and Haas) Manufactured).

Examples of the cross polymer of the component (C) include (meth) acrylic acid / (meth) acrylic acid alkyl / (meth) acrylic acid polyoxyethylene alkyl ether cross polymer, (meth) acrylic acid / (meth) acrylic acid. And alkyl / neodecanoic acid vinyl crosspolymer.
Specific examples of the (meth) acrylic acid / (meth) alkyl acrylate / (meth) acrylic acid polyoxyethylene alkyl ether crosspolymer include Aculine 88 (Acrylates / Stealess Methacrylate Methacrylate Cross Polymer) (Rohm and For example).
Specific examples of the (meth) acrylic acid / alkyl (meth) acrylate / vinyl neodecanoate crosspolymer include Aculin 38 (Acrylates / Vinyl neodecanoate crosspolymer) (Rohm and Haas).

In the component (C), the number of moles of ethylene oxide to be polymerized is not particularly limited and can be appropriately selected depending on the purpose.

The component (C) may be used alone or in combination of two or more. Among these, as said (C) component, it is preferable that it is a cross polymer from the point which is excellent in the speed of foaming, and (meth) acrylic acid / (meth) acrylic acid alkyl / ( Preferred are (meth) acrylic acid polyoxyethylene alkyl ether crosspolymers, (meth) acrylic acid / (meth) alkyl acrylate / neodecanoic acid vinyl crosspolymers, (meth) acrylic acid / (meth) acrylic acid alkyl / neodecanoic acid vinyl Cross polymers are particularly preferred.

The content of the component (C) is not particularly limited as long as the content mass ratio with respect to the following component (D) is satisfied, and can be appropriately selected according to the purpose. 1% by mass to 5% by mass is preferable, and 0.3% by mass to 1% by mass is more preferable. If the content of the component (C) is less than 0.1% by mass, the foaming speed and the amount of foam may be inferior, or a sticky feeling may occur after drying. Inferior property, stickiness may occur after drying.

<(D) component>
The component (D) is a copolymer composed of (d1) dimethyldiallylammonium chloride and (d2) at least one monomer unit of acrylic acid and acrylamide. These may be used alone or in combination of two or more. By blending the component (D) with the skin cleansing composition, it is possible to remarkably reduce the sliminess during rinsing and improve the rinsing properties.
Among these, dimethyldiallylammonium chloride / acrylamide copolymer is preferable from the viewpoint of excellent rinsing properties.

In the component (D), the molar ratio (d1) :( d2) between (d1) dimethyldiallylammonium chloride and (d2) at least one of acrylic acid and acrylamide is not particularly limited and is appropriately determined depending on the purpose. Although it can be selected, it is preferably 20:80 to 70:30, more preferably 20:80 to 40:60. In the component (D), if the ratio of dimethyldiallylammonium chloride to at least one of acrylic acid and acrylamide is less than 20, stickiness may occur after drying, and if it exceeds 70, rinsing properties are inferior. Sometimes.

As the component (D), a commercially available product can be used. Specific examples thereof include Marquat 550PR (dimethyldiallylammonium chloride: acrylamide = 30: 70 (molar ratio), weight average molecular weight 1.6 million, manufactured by Lubrizol) Marquat 3330PR (acrylic acid: dimethyldiallylammonium chloride: acrylamide = 34: 31: 35 (molar ratio), weight average molecular weight 1,500,000, manufactured by Lubrizol), Marquat 740 (dimethyldiallylammonium chloride: acrylamide = 24: 76) Molar ratio), weight average molecular weight 120,000, manufactured by Lubrizol), Marquat 2003PR (acrylic acid: dimethyldiallylammonium chloride: acrylamide = 10: 40: 50 (molar ratio), weight average molecular weight 1,200,000, manufactured by Lubrizol) , Marco 280 (acrylic acid: dimethyldiallylammonium chloride = 35: 65 (molar ratio), weight average molecular weight 450,000, manufactured by Lubrizol), Marquat 295 (acrylic acid: dimethyldiallylammonium chloride = 5: 95 (molar ratio)), weight Average molecular weight 190,000, manufactured by Lubrizol).
Among these, mer coat 550PR, mer coat 3330PR, and the like are preferable, and mer coat 550PR is particularly preferable from the viewpoint of excellent rinsing properties.

In addition, in this invention, the ratio of each monomer in the said (D) component can be determined by measuring on the following measurement conditions by nuclear magnetic resonance (NMR).
[Measurement condition]
Solvent: heavy water (D ₂ O)
Measuring instrument: JNM-LA300 (300 MHz, manufactured by JEOL Ltd.)

The content of the component (D) is not particularly limited as long as the content mass ratio to the following component (C) is satisfied, and can be appropriately selected according to the purpose, but is excellent in rinsing properties and feels sticky after drying. In view of the fact that no occurrence occurs, it is preferably 0.05% by mass to 2% by mass, more preferably 0.1% by mass to 1% by mass. If the content of the component (D) is less than 0.05% by mass, the amount of foam and the rinsing property may be inferior, and a sticky feeling may be generated after drying. It may be inferior or may have a sticky feeling after drying.

<Contained mass ratio (C) / (D)>
The mass ratio (C) / (D) of the component (C) and the component (D) is 0.2 to 5 because it is excellent in the amount of foam and rinsing properties and does not give a sticky feeling after drying. 0.5 to 2.5 is preferable. When the content mass ratio (C) / (D) is less than 0.2, the rinsing property may be inferior, or a sticky feeling may be generated after drying. When the content ratio exceeds 5, the rinsing property may be inferior. There may be a sticky feeling after drying.

<Other ingredients>
The other components are not particularly limited as long as the effects of the present invention are not impaired, and can be appropriately selected according to the purpose. For example, viscosity adjusting agents, solvents, pH adjusting agents, moisturizing agents, vitamins, Amino acids, anti-inflammatory agents, ultraviolet absorbers, cooling agents, antioxidants, colorants, fragrances, antiperspirants, bactericides, deodorants, preservatives, inclusion compounds, water-insoluble powders (inorganic powders) And surfactants other than the component (A) and the component (B) (cationic surfactants, nonionic surfactants, anionic surfactants, etc.).

<< Viscosity modifier >>
The viscosity modifier is not particularly limited and may be appropriately selected depending on the intended purpose.For example, hydroxyethyl cellulose, methyl cellulose, ethanol, polyethylene glycol, polypropylene glycol, ethylene glycol, ethylene glycol distearate, propylene glycol, Examples include isoprene glycol, glycerin, salts (potassium chloride, calcium chloride, sodium chloride, ammonium chloride, sodium citrate, etc.). These may be used alone or in combination of two or more.
Among these, ethylene glycol distearate, glycerin, ethanol, polypropylene glycol, calcium chloride, potassium chloride, sodium chloride, and sodium citrate are preferable.
The ethylene glycol distearate also has a function as a pearling agent (brightener or gloss imparting agent).

The content of the viscosity modifier is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 0.01% by mass to 5% by mass from the viewpoint of the amount of foam and foam quality. 05 mass% to 4 mass% is more preferable, and 0.1 mass% to 3 mass% is particularly preferable.

<< Solvent >>
The solvent is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably in a liquid form, for example, water, lower alcohol (for example, ethanol), polyhydric alcohol (for example, propylene glycol, Glycerin, dipropylene glycol, polyethylene glycol, 1,3-butylene glycol, sorbitol, erythritol, etc.). These may be used alone or in combination of two or more.

-PH-
The pH of the skin cleansing composition is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 8.0 to 11.0, and more preferably 8.5 to 10.5. When the pH is less than 8.0, the component (A) may precipitate at a low temperature (−5 ° C. to 10 ° C.), and when it exceeds 11.0, it may irritate the skin.
The pH can be measured using a pH meter (HM-30G, manufactured by Toa DKK Corporation).

-Property-
There is no restriction | limiting in particular as a property of the said skin cleaning composition, According to the objective, it can select suitably, For example, liquid state, a gel form, etc. are mentioned.
The viscosity of the skin cleansing composition is not particularly limited and may be appropriately selected depending on the intended purpose. However, the viscosity at 25 ° C. is less likely to spill when picked up and easily applied to the skin and stretched. However, 500 mPa · s to 10,000 mPa · s is preferable, 1,000 mPa · s to 7,000 mPa · s is more preferable, and 2,000 to 6,000 mPa · s is particularly preferable.
The viscosity can be measured using a BL type viscometer (manufactured by Tokyo Keiki Co., Ltd.) under the conditions of No. 3 rotor, 25 ° C., 30 rpm, and 20 seconds.

-Usage site, usage-
There is no restriction | limiting in particular as a use site | part and usage method of the said skin cleansing composition, According to the objective, it can select suitably, For example, it can be used by a normal usage method with a whole body, a face, a hand, etc. .

-container-
The skin cleansing composition may be filled in a container.
There is no restriction | limiting in particular as said container, According to the objective, it can select suitably, For example, a pump container, a tube container, a bag-like container, etc. are mentioned.

-Production method-
There is no restriction | limiting in particular as a manufacturing method of the said skin cleansing composition, It can manufacture according to a conventional method.
The manufacture of the skin cleansing composition may be performed using an apparatus. There is no restriction | limiting in particular as said apparatus, Although it can select suitably according to the objective, It has a shear force and the stirring apparatus provided with several stirring blades (for example, a propeller, a turbine, a disper, etc.) which can mix the whole. Ajihomo mixer, reverse flow mixer, hybrid mixer and the like are more preferable.

-Applications-
There is no restriction | limiting in particular as a use of the said skin cleansing composition, According to the objective, it can select suitably, For example, a body shampoo, a body soap, a face-wash foam, a hand soap, a foam hand soap, etc. are mentioned.
Among these, it is particularly suitable for body shampoos, body soaps and the like for the whole body because it is excellent in foaming speed and rinsing properties and does not give a feeling of tension after drying.

Hereinafter, the present invention will be specifically described with reference to examples of the present invention, but the present invention is not limited to these examples. In the following Examples and Comparative Examples, “%” represents “% by mass” unless otherwise specified.

(Examples 1 to 37, Comparative Examples 1 to 17)
Skin cleansing compositions (body shampoos) having the compositions and blending amounts shown in Tables 1 to 9 below were prepared by a conventional method.
In addition, all the components described in the following Tables 1 to 9 show values converted into pure components.
In addition, “(A1) [parts by mass] / (A1) + (A2) + (A3) [100 parts by mass]” indicates the total content of the (A1) component, the (A2) component, and the (A3) component. It represents the content (parts by mass) of the component (A1) when 100 parts by mass, and “(A2) [parts by mass] / (A1) + (A2) + (A3) [100 parts by mass]” is , (A1) component, (A2) component, and (A3) component when the total content is 100 parts by mass, the (A2) component content [parts by mass] is expressed, “(A3) [mass Part] / (A1) + (A2) + (A3) [100 parts by mass] "means that the total content of the component (A1), the component (A2), and the component (A3) is 100 parts by mass. The content (parts by mass) of the component (A3) is represented.
“Contained mass ratio [(C) / (D)]” represents the contained mass ratio of the component (C) and the component (D) in the skin cleanser composition.

<Sensory evaluation>
Twenty panelists specializing in skin cleansing compositions for women fold nylon towels (28cm x 110cm) wet with water into six, and then fold them into two (12 nylon towels overlapped), 6 mL of each of the skin cleanser compositions of Examples and Comparative Examples was taken on one side that was folded in two, and the side without the skin cleanser composition was placed on the palm of both hands and hand-rubbed with both hands. Sensory evaluation was performed based on the following evaluation criteria with respect to the “speed of foaming” and “amount of foam”.
After wetting the whole body with water, wash the whole body with the nylon towel, and then wash away the skin cleansing composition adhering to the whole body with a shower. At this time, `` rinse '' is subjected to sensory evaluation based on the following evaluation criteria. went.
After washing, the whole body was towel-dried, and sensory evaluation was performed based on the following evaluation criteria for “no stickiness after drying” and “no stickiness after drying”. The results are shown in Tables 1 to 9 below.

-Evaluation of foaming speed-
[Evaluation criteria]
A: More than 16 out of 20 responded that “foaming is fast”.
○: 11 to 15 out of 20 responded that “foaming is fast”.
(Triangle | delta): 6 to 10 out of 20 responded that "Foaming is quick."
X: 5 or less out of 20 responded that “foaming is fast”.
In the present invention, “the speed of foaming” means the speed of foaming when a nylon towel is gripped with both hands by the above method.

-Evaluation of foam volume-
[Evaluation criteria]
A: More than 16 out of 20 responded that “the amount of foam is large”.
○: 11 to 15 out of 20 responded that “the amount of foam is large”.
Δ: 6 to 10 out of 20 responded that “the amount of foam is large”.
X: 5 or less out of 20 responded that “the amount of foam is large”.
In the present invention, the “foam amount” means the amount of foam formed when the nylon towel is held with both hands by the above method.

-Rinseability evaluation-
[Evaluation criteria]
A: 16 or more out of 20 responded that “there is no luster when rinsing and it is easy to rinse”.
○: 11 to 15 out of 20 responded that “there is no slipperiness during rinsing and easy rinsing”.
Δ: 6 to 10 out of 20 responded that “there is no slipperiness during rinsing and easy rinsing”.
X: 5 or less out of 20 responded that “there is no luster when rinsing and that rinsing is easy”.

-Evaluation of lack of stickiness after drying-
[Evaluation criteria]
A: 16 or more of 20 responded that there was no stickiness after drying.
○: 11 to 15 out of 20 responded that there was no stickiness after drying.
Δ: 6 to 10 out of 20 responded that there was no stickiness after drying.
X: 5 or less out of 20 responded that there was no stickiness after drying.

-Evaluation of lack of feeling of tension after drying-
[Evaluation criteria]
A: More than 16 out of 20 responded that there was no feeling of tension after drying.
○: 11 to 15 out of 20 responded that “there is no feeling of tension after drying”.
Δ: 6 to 10 out of 20 responded that “there is no feeling of tension after drying”.
X: 5 or less out of 20 responded that “there is no tension after drying”.

About each component used for the Example and the comparative example, it is as Table 10 below.

Examples of the aspect of the present invention include the following.
<1> a fatty acid salt comprising (A) (A1) laurate, (A2) myristate, and (A3) palmitate,
(B) an amphoteric surfactant;
(C) (c1) (meth) acrylic acid, (c2) alkyl (meth) acrylate, (c3) (meth) acrylic acid polyoxyethylene alkyl ether and at least one selected from vinyl neodecanoate, At least one selected from a copolymer comprising a monomer unit consisting of
(D) (d1) dimethyldiallylammonium chloride, and (d2) a copolymer comprising at least one monomer unit of acrylic acid and acrylamide.
The content of the component (A) is 5% by mass to 25% by mass,
When the total content of the component (A1), the component (A2), and the component (A3) is 100 parts by mass, the content of the component (A1) is 25 parts by mass to 45 parts by mass, The content of the component (A2) is 45 to 60 parts by mass, and the content of the component (A3) is 5 to 20 parts by mass.
A skin cleanser composition characterized in that the mass ratio of the component (C) to the component (D) is (C) / (D) = 0.2-5.
<2> The component (B) is a betaine-type amphoteric surfactant, the component (C) is (c1) (meth) acrylic acid, (c2) alkyl (meth) acrylate, and (c3) neodecanoic acid. The skin cleanser composition according to <1>, wherein the composition is a cross polymer having a monomer unit composed of vinyl.
<3> In the component (D), the molar ratio (d1) :( d2) between (d1) dimethyldiallylammonium chloride and (d2) at least one of acrylic acid and acrylamide is 20:80 to 70:30. The skin cleansing composition according to any one of <1> to <2>.
<4> The content of the component (B) is 0.1% by mass to 10% by mass, the content of the component (C) is 0.1% by mass to 5% by mass, and the component (D) The skin cleanser composition according to any one of <1> to <3>, wherein the content is 0.05% by mass to 2% by mass.

The skin cleansing composition of the present invention can be suitably used for, for example, body shampoos, body soaps, facial cleansing foams, hand soaps, foam hand soaps, and the like.

Claims

A fatty acid salt comprising (A) (A1) laurate, (A2) myristate, and (A3) palmitate,
(B) an amphoteric surfactant;
(C) (c1) (meth) acrylic acid, (c2) alkyl (meth) acrylate, (c3) (meth) acrylic acid polyoxyethylene alkyl ether and at least one selected from vinyl neodecanoate, At least one selected from a copolymer comprising a monomer unit consisting of
(D) (d1) dimethyldiallylammonium chloride, and (d2) a copolymer comprising at least one monomer unit of acrylic acid and acrylamide.
The content of the component (A) is 5% by mass to 25% by mass,
When the total content of the component (A1), the component (A2), and the component (A3) is 100 parts by mass, the content of the component (A1) is 25 parts by mass to 45 parts by mass, The content of the component (A2) is 45 to 60 parts by mass, and the content of the component (A3) is 5 to 20 parts by mass.
A skin cleansing composition, wherein the mass ratio of the component (C) to the component (D) is (C) / (D) = 0.2-5.
(B) component is a betaine type amphoteric surfactant,
The component (C) is a cross polymer having a monomer unit comprising (c1) (meth) acrylic acid, (c2) alkyl (meth) acrylate, and (c3) vinyl neodecanoate. Skin cleansing composition.
The molar ratio (d1) :( d2) between (d1) dimethyldiallylammonium chloride and (d2) at least one of acrylic acid and acrylamide in the component (D) is 20:80 to 70:30. 3. The skin cleanser composition according to any one of 2 to 3.
The content of component (B) is 0.1% by mass to 10% by mass, the content of component (C) is 0.1% by mass to 5% by mass, and the content of component (D) is The skin cleanser composition according to any one of claims 1 to 3, which is 0.05 mass% to 2 mass%.