JP2023177999A - liquid skin cleanser composition - Google Patents

Abstract

To provide a liquid skin cleanser composition which can improve the lack of tight feeling of the skin after towel-drying and its persistence and the texture of the skin after towel-drying and furthermore has excellent discharge properties from a foamer container and can discharge a foam having excellent quality.SOLUTION: There is provided a liquid skin cleanser composition filled in a foamer container which comprises (A) an anionic surfactant, (B) a cationic polymer containing 40 mol% or more of a structural unit derived from dimethyldiallylammonium chloride and (C) lanolin alcohol, wherein the mass ratio [{(A)+(B)}/(C)] of the total content of the component (A) and the component (B) to the content of the component (C) is 40 to 1050.SELECTED DRAWING: None

Description

TECHNICAL FIELD This invention relates to liquid skin cleanser compositions.

BACKGROUND ART It has been conventionally desired that liquid skin cleansing compositions such as hand soaps and body soaps have good foam quality such as foam texture, and that the skin does not feel tight after being towel-dried. Dry skin is one of the causes of tight skin.

In order to impart a moisturizing effect to the skin after washing, for example, a liquid skin cleansing composition containing a fatty acid salt and a cationic polymer having a structural unit derived from dimethyldiallylammonium chloride has been proposed. (For example, see Patent Document 1). However, the above proposal was not satisfactory in terms of foam quality, no feeling of tightness on the skin after towel drying, and its durability, texture of the skin after towel drying, and dischargeability from the foamer container.

Generally, it is known to add more fatty acids such as lauric acid, myristic acid, palmitic acid, and stearic acid to improve foam quality. In some cases, the ejectability of the skin deteriorates, the skin does not feel tight after towel-drying, and its persistence, and the texture of the skin after towel-drying deteriorates.

Therefore, the liquid skin can improve the lack of tightness of the skin after towel drying and its sustainability, as well as the texture of the skin after towel drying, and can also discharge foam of good foam quality from the foamer container. Currently, it is desired to provide a cleaning composition.

JP2004-262838A

The present invention aims to solve the above-mentioned conventional problems and achieve the following objects. That is, the present invention can improve the lack of tightness of the skin after towel drying and its persistence, as well as the texture of the skin after towel drying, and furthermore, can improve the dischargeability from the foamer container and create a good foam. It is an object of the present invention to provide a liquid skin cleansing composition capable of discharging quality foam.

As a result of intensive studies to achieve the above object, the present inventors have discovered that (A) an anionic surfactant and (B) a cationic surfactant containing 40 mol% or more of structural units derived from dimethyldiallylammonium chloride. molecule and (C) lanolin alcohol, and the mass ratio of the total content of the (A) component and the (B) component to the content of the (C) component [{(A)+(B) )}/(C)] is 40 to 1,050, and the liquid skin cleansing composition is characterized in that it is filled in a foamer container. The present inventors have discovered that it is possible to improve the skin texture and texture of the skin after towel drying, and that it is also possible to discharge foam with excellent discharge properties from a foamer container and with good foam quality, leading to the completion of the present invention. .

The present invention is based on the above findings by the inventors, and means for solving the above problems are as follows. That is,
<1> (A) an anionic surfactant;
(B) a cationic polymer containing 40 mol% or more of structural units derived from dimethyldiallylammonium chloride;
(C) lanolin alcohol;
Contains
The mass ratio of the total content of the (A) component and the (B) component to the content of the (C) component [{(A)+(B)}/(C)] is 40 to 1,050. and
This is a liquid skin cleansing composition characterized in that it is filled into a foamer container.
<2> The liquid skin cleansing agent according to <1>, wherein the mass ratio [(A)/(B)] of the content of the component (A) to the content of the component (B) is 24 to 80. It is a composition.
<3> The content of the component (A) is 12% by mass to 20% by mass, the content of the component (B) is 0.2% by mass to 0.8% by mass, and the content of the component (C) is 12% by mass to 20% by mass. The liquid skin cleansing composition according to any one of <1> to <2> above, wherein the content of 0.002% by mass to 0.4% by mass.
<4> The liquid skin cleansing composition according to any one of <1> to <3> above, which has a viscosity at 25° C. of 5 mPa·s to 30 mPa·s.

According to the present invention, the above-mentioned problems in the conventional art can be solved and the above-mentioned objects can be achieved, and it is possible to eliminate the feeling of tightness in the skin after towel-drying and improve its sustainability, as well as the texture of the skin after towel-drying. Furthermore, it is possible to provide a liquid skin cleansing composition that has excellent discharge properties from a foamer container and can discharge foam of good foam quality.

(Liquid skin cleansing composition)
The liquid skin cleansing composition of the present invention comprises (A) an anionic surfactant, (B) a cationic polymer containing 40 mol% or more of structural units derived from dimethyldiallylammonium chloride, and (C) lanolin. alcohol, and further contains other components as necessary.
The liquid skin cleanser composition of the present invention has a mass ratio of the total content of the component (A) and the component (B) to the content of the component (C) [{(A)+(B)}/ (C)] is 40 to 1,050, and is filled into a former container.

As a result, the liquid skin cleansing composition of the present invention can improve the lack of tight feeling on the skin after towel drying and its persistence, as well as the texture of the skin after towel drying, and furthermore, it can be easily discharged from the former container. It has excellent properties and can discharge foam of good foam quality.

Generally, when the skin texture (wood grain, texture) is in good condition, approximately triangular mesh grooves are visible on the skin surface. On the other hand, if the skin texture is poor, the grooves become unclear, the shape of the mesh becomes distorted, the grooves become difficult to see, and the areas without grooves become rough. Therefore, skin texture is an important element of skin beauty. The above-mentioned "groove" is called a skin groove, and the approximately triangular flat part surrounded by this skin groove is called a skin hill. Also, pores are visible where the skin grooves intersect, but when the skin texture is good, the pores are small and unnoticeable, whereas when the skin texture is poor, the pores are large and noticeable. It is said that skin texture is good when the width and depth of skin grooves, the size and height of skin mounds, and the size of pores are uniform. It is widely known that the condition of skin texture is a complex reflection of various influences such as the moisture content of the skin, metabolism, and the condition of the dermis.

The liquid skin cleansing composition can improve such skin texture. The skin texture can be confirmed by observing with a microscope, for example.
In the present specification, if the maximum depth (μm) of the largest wrinkle is increased after using the liquid skin cleansing composition compared to before using the liquid skin cleansing composition, then the liquid skin It can be determined that the cleansing composition has improved the texture of the skin.

(Liquid skin cleansing composition)
<(A) Anionic surfactant>
The anionic surfactant as the component (A) is mainly contained to improve the sustainability of the feeling of tightness after towel drying.

The anionic surfactant as the component (A) is not particularly limited and can be appropriately selected depending on the purpose, such as higher fatty acid salts, polyoxyethylene (POE) alkyl ether sulfates, and ether carboxylic acids. Examples include salts and amino acid surfactants. These may be used alone or in combination of two or more. Among these, higher fatty acid salts are preferred from the viewpoint of maintaining a feeling of tightness after towel drying.

-Higher fatty acid salt-
The higher fatty acid salt in the component (A) is not particularly limited and can be appropriately selected depending on the purpose; for example, laurate, myristate, palmitate, stearate, etc. Can be mentioned. These may be used alone or in combination of two or more.

The counter ion of the higher fatty acid salt is not particularly limited and can be appropriately selected depending on the purpose, and includes, for example, alkali metal salts, amine salts, amino acid salts, and the like.
The alkali metal salt is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include sodium salts, potassium salts, and the like.
The amine salt is not particularly limited and can be appropriately selected depending on the purpose, such as ammonium salt, monoethanolamine salt, diethanolamine salt, triethanolamine salt, 2-amino-2-methylpropanol, Examples include alkanolamine salts such as -amino-2-methylpropanediol.
The amino acid salt is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include lysine salts, arginine salts, and the like.
Among these, alkali metal salts are preferred, and potassium salts are particularly preferred, since they have excellent foam retention.

The higher fatty acid salt may be appropriately synthesized or a commercially available product.
Commercially available products of the higher fatty acid salts include, for example, NIKKOL Potassium Laurate LK-120 (potassium laurate, manufactured by Nikko Chemicals Co., Ltd.), NIKKOL Potassium Myristate MK-140 (potassium myristate, Nikko Chemicals Co., Ltd.) Nonsal PK-1 (potassium palmitate, manufactured by NOF Corporation), Nonsal SK-1 (potassium stearate, manufactured by NOF Corporation), Taisoap MNK-40 (contains potassium coconut oil fatty acid and potassium myristate) liquid, manufactured by Nikko Chemicals Co., Ltd.), etc.

The higher fatty acid salt can be blended as a higher fatty acid salt, but it is also possible to add the higher fatty acid and a salt serving as the counter ion such as potassium hydroxide separately into a blending tank and cause a neutralization reaction. It may also be used as a higher fatty acid salt.

The higher fatty acid used in the preparation of the higher fatty acid salt may be appropriately synthesized or a commercially available product.
Commercially available products of the higher fatty acid salts include, for example, the trade names NAA (registered trademark) -122 (lauric acid, manufactured by NOF Corporation), NAA (registered trademark) -142 (myristic acid, manufactured by NOF Corporation), ), NAA (registered trademark)-160 (palmitic acid, manufactured by NOF Corporation), NAA (registered trademark) -180 (stearic acid, manufactured by NOF Corporation), and the like.

The content of the laurate salt is not particularly limited and can be appropriately selected depending on the purpose, but it is preferably 4% by mass to 10% by mass, and 6% by mass based on the total amount of the liquid skin cleansing composition. More preferably, the amount is from % by mass to 9% by mass.

The content of the myristate salt is not particularly limited and can be appropriately selected depending on the purpose, but it is preferably 3% by mass to 12% by mass, and 4% by mass based on the total amount of the liquid skin cleansing composition. More preferably, the amount is from % by mass to 8% by mass.

The content of the palmitate salt is not particularly limited and can be appropriately selected depending on the purpose, but it is preferably 0.5% by mass to 5% by mass based on the total amount of the liquid skin cleansing composition. , more preferably 1.5% by mass to 3.5% by mass.

The content of the stearate salt is not particularly limited and can be appropriately selected depending on the purpose, but it is 0.1% by mass to 0.5% by mass based on the total amount of the liquid skin cleansing composition. is preferred, and 0.1% by mass to 0.4% by mass is more preferred.

-Polyoxyethylene alkyl ether sulfate-
The polyoxyethylene alkyl ether sulfate in the component (A) is not particularly limited and can be appropriately selected depending on the purpose, for example, a compound represented by the following general formula (A1), etc. Can be mentioned. The polyoxyethylene alkyl ether sulfate may be used alone or in combination of two or more.

In the general formula (A1), R ¹ represents an alkyl group. The number of carbon atoms in the alkyl group portion is preferably 10 to 14.

In the general formula (A1), n represents the average number of moles of ethylene oxide (E.O.) added. The average number of moles of ethylene oxide added is preferably 1 to 5.

In the general formula (A1), X represents an alkali metal or ammonium.
The alkali metal is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include sodium and potassium.

Specific examples of the polyoxyethylene alkyl ether sulfate include polyoxyethylene (1) sodium lauryl ether sulfate, polyoxyethylene (2) sodium lauryl ether sulfate (also known as POE (2) sodium laureth sulfate), and polyoxyethylene (2) sodium lauryl ether sulfate. (3) Sodium lauryl ether sulfate (also known as POE (3) sodium laureth sulfate), polyoxyethylene (4) sodium lauryl ether sulfate, polyoxyethylene (5) sodium lauryl ether sulfate, polyoxyethylene (3) alkyl (C12) , 13) sodium ether sulfate, polyoxyethylene (2) ammonium lauryl ether sulfate, polyoxyethylene (3) ammonium lauryl ether sulfate, and the like.
The numerical value in parentheses above represents the average number of added moles (n) of ethylene oxide (E.O.).

The polyoxyethylene alkyl ether sulfate may be appropriately synthesized or a commercially available product.
Commercially available products of the polyoxyethylene alkyl ether sulfate include, for example, trade names such as Texapon (registered trademark) N70 (manufactured by BASF, sodium polyoxyethylene (2) lauryl ether sulfate), and Shinoline SPE-1250. (manufactured by Shin Nippon Chemical Co., Ltd., polyoxyethylene (2) sodium lauryl ether sulfate), etc.

-Ether carboxylate-
The ether carboxylate in the component (A) is not particularly limited and can be appropriately selected depending on the purpose, for example, a compound represented by the following general formula (A2) or (A3), etc. can be mentioned. The ether carboxylates may be used alone or in combination of two or more.

In the general formulas (A2) and (A3), R ² is a straight-chain or branched alkyl group or alkenyl group having 5 to 23 carbon atoms, or a straight-chain or branched alkyl group or alkenyl having 5 to 23 carbon atoms. Indicates a phenyl group substituted with a group. The number of carbon atoms in the R ² moiety is preferably 10 to 14.

In the general formula (A2), R ³ may be the same or different and represents an alkylene group having 2 to 4 carbon atoms, preferably 2 carbon atoms.

In the general formula (A2), o represents the average number of moles of alkylene oxide added from 1 to 20. The average number of moles of the alkylene oxide added is preferably 1 to 5.

In the general formulas (A2) and (A3), M ¹ represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or a basic amino acid.

Specific examples of the ether carboxylate represented by the general formula (A2) or (A3) include polyoxyethylene (3) sodium lauryl ether acetate, polyoxyethylene (4) potassium lauryl ether acetate, and sodium lauryl glycol acetate. Examples include.
Note that the numerical value in parentheses above represents the average number of added moles (o) of alkylene oxide.

The ether carboxylate may be appropriately synthesized or a commercially available product.
Commercially available products of the ether carboxylate include, for example, Enadicol EC-30 (manufactured by Lion Specialty Chemicals Co., Ltd., sodium polyoxyethylene (3) lauryl ether acetate), Viewlite LCA-25F (polyoxyethylene (3) sodium lauryl ether acetate), oxyethylene (3) sodium lauryl ether acetate), Viewrite LCA-30D (polyoxyethylene (3) sodium lauryl ether acetate), Viewrite LCA-H (polyoxyethylene (4) lauryl ether acetate), Viewrite LCA- 25NH (laureth-4 carboxylic acid), Viewlite SHAA (sodium lauryl glycol carboxylate), Viewlite LCA (polyoxyethylene (3) sodium lauryl ether acetate) (manufactured by Sanyo Chemical Industries, Ltd.), Kaohakipo RLM-45NV (polyoxyethylene (4.5) sodium lauryl ether acetate), Kaohakipo RLM-100NV (polyoxyethylene (10) sodium lauryl ether acetate) (manufactured by Kao Corporation), and the like.
Note that the numerical value in parentheses above represents the average number of added moles (o) of alkylene oxide.

-Amino acid surfactant-
The amino acid surfactant in the component (A) is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include compounds represented by the following general formula (A4). . The amino acid surfactants may be used alone or in combination of two or more.

In the general formula (A4), R ⁴ is substituted with a straight chain or branched alkyl group or alkenyl group having 5 to 23 carbon atoms, or a straight chain or branched alkyl group or alkenyl group having 5 to 23 carbon atoms. represents a phenyl group. The number of carbon atoms in the R ⁴ portion is preferably 8 to 18.

In the general formula (A4), R ⁵ represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.

In the general formula (A4), R ⁶ and R ⁷ may be the same or different and represent a hydrogen atom or -(CH ₂ ) _m -COOM ³ .

In the general formula (A4), m and n may be the same or different and represent a number from 0 to 20.

In the general formula (A4), M ² and M ³ may be the same or different and represent a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium, or a basic amino acid.

The amino acid structure of the hydrophilic part of the amino acid surfactant is not particularly limited and can be appropriately selected depending on the purpose, but glycine, glutamic acid, and methylalanine are preferred.

Specific examples of the amino acid surfactant represented by the general formula (A4) include N-acyl-glycine and its salts such as N-cocoyl-glycine potassium (N-coconut oil fatty acid acylglycine potassium); N-acyl-N-carboxyethyl-glycine and its salts such as sodium myristoyl-N-carboxyethyl-glycine; sodium N-myristoyl-L-glutamate, potassium N-myristoyl-L-glutamate, N-coco fatty acid acyl- N-acylglutamic acid and its salts such as potassium L-glutamate, sodium N-palm fatty acyl-L-glutamate, and sodium N-stearoyl-L-glutamate; examples include potassium N-lauroyl-N-methyl-β-alanine. .

The amino acid surfactant may be appropriately synthesized or a commercially available product.
Commercially available amino acid surfactants include, for example, the trade names AMILYT (registered trademark) GCK-11 (N-coconut oil fatty acid acylglycine potassium), AMILYT (registered trademark) GCK-12K (N-coconut oil fatty acid acylglycine potassium), fatty acid acylglycine potassium), amirite (registered trademark) GCS-12K (N-coconut oil fatty acid acylglycine sodium), amirite (registered trademark) GCS-11 (N-coconut oil fatty acid acylglycine sodium), Amisoft (registered trademark) CS -11 (sodium N-myristoyl-L-glutamate), Amisoft (registered trademark) CS-22 (sodium N-coco fatty acid acyl-L-glutamate), Amisoft (registered trademark) LS-11 (N-lauroyl-L- Amisoft (registered trademark) MS-11 (sodium N-myristoyl-L-glutamate), Amisoft (registered trademark) HS-11P (sodium N-stearoyl-L-glutamate), Amisoft (registered trademark) HS-11P (F) (sodium N-stearoyl-L-glutamate), Amisoft (registered trademark) HS21 (disodium N-stearoyl-L-glutamate), amirite (registered trademark) ACS-12 (sodium cocoylalanine) (above, Ajinomoto Healthy Supply Co., Ltd.), Aminosurfact (registered trademark) AMMS-P1 (sodium N-myristoyl-L-glutamate) (manufactured by Asahi Kasei Chemicals Co., Ltd.), NIKKOL Sarcosinate MN (sodium myristoylmethylaminoacetate), NIKKOL Alaninate LN-30 (sodium lauroylmethyl-β-alanine) (manufactured by Nikko Chemicals Co., Ltd.), Alanone ACE (sodium coconut oil fatty acid methylalanine), Alanone AME (sodium myristoylmethyl-β-alanine), Alanone ALE (sodium lauroylmethyl-β-alanine) Sodium alanine) (manufactured by Kawaken Fine Chemicals Co., Ltd.), Enadicol L-30AN (sodium lauroylmethyl-β-alanine) (manufactured by Lion Specialty Chemicals Co., Ltd.), Softilt AT-L (sodium lauroylmethyl-β-alanine) ) (manufactured by NOF Corporation).

The content of the anionic surfactant as the component (A) is not particularly limited and can be selected as appropriate depending on the purpose, but it is important to ensure that there is no feeling of tightness after towel drying and its sustainability, as well as the former container. From the viewpoint of dischargeability and foam quality, the amount is preferably 10% by mass to 25% by mass, more preferably 12% by mass to 20% by mass, based on the total amount of the liquid skin cleansing composition. When the content of the component (A) is 10% by mass or more, the lack of tight feeling after towel drying is good, and when it is 25% by mass or less, the lack of tight feeling after towel drying is good. , good dischargeability from the foamer container, and good foam quality.

<(B) Cationic polymer>
The cationic polymer as the component (B) is a cationic polymer containing 40 mol% or more of structural units derived from dimethyldiallylammonium chloride, and is mainly used to improve skin texture after towel drying and after towel drying. Contains to improve the durability of the skin without feeling tight.

The cationic polymer is not particularly limited as long as it contains 40 mol% or more of structural units derived from dimethyldiallylammonium chloride, and can be appropriately selected depending on the purpose. Examples include dimethyldiallylammonium chloride-acrylic acid copolymer. These may be used alone or in combination of two or more.

The dimethyldiallylammonium chloride-acrylic acid copolymer in the component (B) is a compound represented by the following general formula (B1).
However, in the general formula (B1), n and m indicate the molar ratio (mol%) of each structural unit, n+m=100, and m is 40 mol% or more. If m is less than 40 mol%, the durability of the feeling of tightness after towel drying, the dischargeability from the foamer container, and the foam quality will be insufficient.

The molar ratio of structural units derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of component (B) is 40 mol%, but the lack of tight feeling after towel drying is maintained. From the viewpoint of performance, dischargeability from the foamer container, and foam quality, the content is preferably 65 mol% or more, and more preferably 96 mol% or more. The dimethyldiallylammonium chloride-acrylic acid copolymer may be used alone or in combination of two or more.

The molar ratio of each structural unit in the dimethyldiallylammonium chloride-acrylic acid copolymer in the component (B) can be determined by measuring by nuclear magnetic resonance (NMR) under the following measurement conditions.
[Measurement condition]
Solvent: heavy water ( _D2O )
Measuring device: JNM-LA300 (300MHz, manufactured by JEOL Ltd.)

The weight average molecular weight of the cationic polymer as the component (B) is not particularly limited and can be appropriately selected depending on the purpose, but is preferably from 10,000 to 1,000,000, and from 15,000 to 450,000 is more preferred.
The weight average molecular weight of the cationic polymer of the component (B) can be determined using, for example, the SEC-MALLS-RI system (measurement conditions: Column: Tosoh Corporation TSK gel α series α-M column 30 cm, solvent: 0.3 M aqueous sodium nitrate solution. ) can be measured.

The viscosity at 25° C. of a solution of the cationic polymer of component (B) with a solid content of 30% to 44% by mass is preferably 10 mPa·s to 15,000 mPa·s, and preferably 20 mPa·s to 12,000 mPa·s. s is more preferred.
The viscosity can be measured using, for example, Brookfield Viscometer LVF (manufactured by Brookfield Corporation).

The cationic polymer as the component (B) may be appropriately synthesized or a commercially available product. Examples of commercially available cationic polymers as the component (B) include the following trade names.

MERQUAT 100 (component name: dimethyldiallylammonium chloride polymer, manufactured by Japan Lubrizol Co., Ltd., solid content 39% to 44% by mass, viscosity at 25°C: 8,000mPa・s to 12,000mPa・s , weight average molecular weight: 150,000).
The viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25°C with spindle No. The measurement can be performed using a rotor of 3 and under the condition of 6 revolutions/minute.

Marquat 106 (component name: dimethyldiallylammonium chloride polymer, manufactured by Nippon Lubrizol Co., Ltd., solid content 30% to 36% by mass, viscosity at 25°C: 20mPa・s to 65mPa・s, weight average molecular weight 15,000 ).
The viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25°C with spindle No. The measurement can be performed using one rotor at 60 revolutions/minute.

Marquat 280 (component name: dimethyldiallylammonium chloride-acrylic acid copolymer, manufactured by Nippon Lubrizol Co., Ltd., solid content 39% to 43% by mass, viscosity at 25°C: 3,000mPa・s to 6,000mPa・s, weight average molecular weight 450,000, n:m=35:65 (molar ratio) in the general formula (1), molar ratio of structural units derived from dimethyldiallylammonium chloride 65 mol%).
The viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25°C with spindle No. The measurement can be performed using a No. 4 rotor at 60 revolutions/minute.

Marquat 295 (component name: dimethyldiallylammonium chloride-acrylic acid copolymer, manufactured by Nippon Lubrizol Co., Ltd., solid content 35% to 40% by mass, viscosity at 25°C: 3,500mPa・s to 9,000mPa・s, weight average molecular weight 190,000, n:m=5:95 (mole ratio) in the general formula (1), molar ratio of structural units derived from dimethyldiallylammonium chloride is 95 mol%).
The viscosity was measured using a Brookfield viscometer LVF (manufactured by Brookfield) at 25°C with spindle No. The measurement can be performed using a No. 4 rotor at 30 revolutions/minute.

Among these, Marquat 100 and Marquat 295 are preferable as the cationic polymer of the component (B) from the viewpoints of durability of no feeling of tightness after towel drying, dischargeability from a foamer container, and foam quality. .

The content of the cationic polymer as the component (B) is not particularly limited and can be selected as appropriate depending on the purpose, but it may be selected depending on the texture of the skin after towel drying and the lack of tightness after towel drying. From the viewpoint of sustainability, dischargeability from the foamer container, and foam quality, the amount is preferably 0.1% by mass to 1% by mass, and 0.2% by mass to 0.2% by mass, based on the total amount of the liquid skin cleansing composition. 8% by mass is more preferable. When the content of the component (B) is 0.1% by mass or more, the texture of the skin after towel drying and the lack of tightness after towel drying are good, and when the content is 1% by mass or less, the content of the component (B) is 0.1% by mass or more. The discharge property and foam quality from the foamer container are good.

<(C) Lanolin alcohol>
Lanolin alcohol as the component (C) is mainly contained to improve the feeling of tightness after towel drying.

The lanolin alcohol is obtained by perhydrolyzing lanolin and is a mixture containing cholesterol, which is an aliphatic alcohol, and contains 30% by mass or more of cholesterol.

The method for perhydrolyzing lanolin to obtain the lanolin alcohol is not particularly limited and can be appropriately selected from known methods.

The degree of purification of the lanolin alcohol is not particularly limited, and various lanolins having different degrees of purification can be used.

The lanolin alcohol may be appropriately synthesized or a commercially available product.
Commercial products of the lanolin alcohol include, for example, the trade names Ecolano AL E (manufactured by Nippon Fine Chemical Co., Ltd.), Lanolin Alcohol A (manufactured by Nippon Fine Chemical Co., Ltd.), Super Heart Run (manufactured by Croda Japan Co., Ltd.), etc. can be mentioned.

The content of lanolin alcohol, the component (C), is not particularly limited and can be selected as appropriate depending on the purpose, but it may be selected depending on the lack of tight feeling after towel drying, dischargeability from the foamer container, and foam quality. From this point of view, it is preferably 0.01% by mass to 0.5% by mass, more preferably 0.02% by mass to 0.4% by mass, based on the total amount of the liquid skin cleansing composition. When the content of the component (C) is 0.01% by mass or more, there is no feeling of tightness after towel drying, and when the content is 0.5% by mass or less, the dischargeability from the former container is improved. Good foam quality.

<<Mass ratio [{(A)+(B)}/(C)]>>
Mass ratio of the total content (mass%) of the (A) component and the (B) component to the content (mass%) of the (C) component [{(A)+(B)}/(C) ] is 40 to 1,050 in terms of the durability of the feeling of no tightness after towel drying, and 60 in terms of the texture of the skin after towel drying, the lack of a feeling of tightness after towel drying, and its sustainability. ~700 is preferred. When the mass ratio [{(A)+(B)}/(C)] is less than 40, the lack of tight feeling after towel drying is insufficient, and when it exceeds 1,050, The texture of the skin after towel drying, lack of firmness after towel drying, and its durability are insufficient.

<<Mass ratio [(A)/(B)]>>
There is no particular restriction on the mass ratio [(A)/(B)] of the content (mass%) of the component (A) to the content (mass%) of the component (B), and depending on the purpose, Although it can be selected as appropriate, from the viewpoint of the texture of the skin after towel drying and the durability of the feeling of tightness after towel drying, 24 to 80 is preferable, and 30 to 60 is more preferable. When the mass ratio [(A)/(B)] is 24 or more, the lack of tight feeling after towel drying is good, and when it is 80 or less, the texture and texture of the skin after towel drying is good. There is no feeling of tightness after towel drying and its durability is good.

<Other ingredients>
In addition to the components (A), (B), and (C), the liquid skin cleansing composition may contain a liquid skin cleansing composition, as necessary, to the extent that it does not impair the present invention. Components commonly used in detergent compositions and the like can be blended as other components.

The other components are not particularly limited and can be selected as appropriate depending on the purpose, such as surfactants other than the component (A), water-soluble polymers other than the component (B), and ( Alcohols other than component C), lanolin derivatives other than component (C), oils, silicones, protein derivatives, humectants, bactericides, preservatives, antioxidants, chelating agents, pH adjusters, sequestering agents, Examples include ultraviolet absorbing or scattering agents, drugs such as vitamins, animal and plant extracts or their derivatives, thickeners, amino acids, dyes, fragrances, pigments, inorganic powders, clay minerals, water-insoluble polymer compound powders, etc. . These may be used alone or in combination of two or more.
The other components may be appropriately synthesized or commercially available.

-Surfactants other than component (A)-
The surfactant other than the component (A) is not particularly limited and can be appropriately selected depending on the purpose, such as nonionic surfactants, cationic surfactants, amphoteric surfactants, etc. It will be done. These may be used alone or in combination of two or more.

The nonionic surfactant is not particularly limited and includes, for example, sorbitan fatty acid ester, glycerin fatty acid ester, alkylene oxide adduct of sorbitan fatty acid ester, alkylene oxide adduct of glycerin fatty acid ester, polyoxyalkylene alkyl ether, polyoxy Alkylene fatty acid ester, polyoxyalkylene alkylphenol, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene alkylphenyl formaldehyde condensate, polyoxyethylene sterol and its derivatives, polyoxyethylene lanolin and its derivatives, polyoxyethylene beeswax derivatives, sugar esters , polyoxyethylene hydrogenated castor oil, polyoxyethylene castor oil, and the like.

The cationic surfactant is not particularly limited, and includes alkyltrimethylammonium salts such as stearyltrimethylammonium chloride and lauryltrimethylammonium chloride, alkylpyridinium salts such as cetylpyridinium chloride, distearyldimethylammonium chloride dialkyldimethylammonium salts, and chloride. Poly(N,N'-dimethyl-3,5-methylenepiperidinium), alkyl quaternary ammonium salt, alkyldimethylbenzylammonium salt, alkylisoquinolinium salt, dialkylmorphonium salt, POE-alkylamine, alkyl Examples include amine salts, polyamine fatty acid derivatives, amyl alcohol fatty acid derivatives, benzalkonium chloride, benzethonium chloride, and the like.

The above-mentioned surfactants are not particularly limited and can be appropriately selected depending on the purpose, and include, for example, betaine-type amphoteric surfactants, amino acid-type amphoteric surfactants, and the like.

The betaine type amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose. Surfactants: Amidobetaine type amphoteric surfactants such as amidopropyl betaine laurate, amidopropyl betaine of coconut oil fatty acid, amidopropyl betaine of palm kernel oil fatty acid; lauryl hydroxysulfobetaine, lauramide propyl hydroxysultaine, dimethyl coconut oil fatty acid Sulfobetaine-type amphoteric surfactants such as aminohydroxysulfobetaine and lauryldimethylaminohydroxysulfobetaine; N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium, N-coco fatty acid acyl-N'-carboxy Examples include imidazolinium betaine type amphoteric surfactants such as sodium methyl-N'-hydroxyethylethylenediamine and 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine.

The amino acid type amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose, for example, sodium β-lauryl aminopropionate, sodium lauryl amino dipropionate, N-lauroyl-N'- Examples include sodium carboxymethyl-N'-hydroxyethylethylenediamine, sodium coconut alkylaminopropionate, N-lauryl β-alanine, and N-stearyl β-alanine.

The content of surfactants other than the component (A) is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose.

-Water-soluble polymer other than component (B)-
The water-soluble polymer other than the component (B) is not particularly limited and can be appropriately selected depending on the purpose, such as hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, polyethylene glycol, and highly polymerized polyethylene glycol. , polyvinyl alcohol, polyglutamic acid, carboxyvinyl polymer, acrylic acid/alkyl methacrylate copolymer, alkyl acrylate copolymer, O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethylcellulose chloride, O chloride -[2-hydroxy-3-(trimethylammonio)propyl]guar gum and the like. These may be used alone or in combination of two or more.

The content of water-soluble polymers other than the component (B) is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose.

-Alcohols other than component (C)-
The alcohols other than the component (C) are not particularly limited and can be appropriately selected depending on the purpose, and may be lower alcohols or higher alcohols.
Specific examples of alcohols other than component (C) include natural and synthetic higher alcohols such as cetyl alcohol, oleyl alcohol, stearyl alcohol, hexyldecanol, octyldodecanol, and lauryl alcohol. These may be used alone or in combination of two or more.

The content of alcohols other than the component (C) is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose; however, the total amount of the liquid skin cleansing composition The amount is preferably 0.1% to 3% by mass.

- Lanolin derivatives other than component (C) -
The lanolin derivatives other than the component (C) are not particularly limited and can be appropriately selected depending on the purpose. Examples include lanolin alcohol fatty acid ester, lanolin alcohol polyethylene glycol ether, lanolin alcohol polypropylene glycol ether, etc. . These may be used alone or in combination of two or more.

The content of lanolin derivatives other than the component (C) is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose.

-Oil content-
The oil is not particularly limited and can be selected as appropriate depending on the purpose, such as castor oil, olive oil, cacao oil, hydrogenated palm oil, camellia oil, coconut oil, wood wax, jojoba oil, grapeseed oil, Vegetable oils and fats such as avocado oil and their ester compounds; Animal oils and fats such as mink oil and egg yolk oil; Waxes such as beeswax, spermaceti, lanolin, hydrogenated lanolin, carnauba wax, and candelilla wax; liquid paraffin, squalane, Hydrocarbons such as microcrystalline wax, ceresin wax, paraffin wax, and petrolatum; glycerol tri-2-ethylhexanoate, 2-ethylhexyl stearate, butyl stearate, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, Examples include esters such as octyldodecyl oleate and cholesterol oleate. These may be used alone or in combination of two or more.

The oil content is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose. Preferably, the amount is from % by mass to 3% by mass.

-Moisturizer-
The humectant is not particularly limited and can be selected as appropriate depending on the purpose, such as isoprene glycol, 1,2-pentanediol, diethylene glycol, diethylene glycol monoalkyl ether, propylene glycol, polypropylene glycol, polypropylene glycol, Examples include hydrogenated castor oil (30 E.O.), diglycerin, triglycerin, polyglycerin, and the like. These may be used alone or in combination of two or more.

The content of the moisturizing agent is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose. It is preferably 1% by weight to 10% by weight.

-Preservative-
The preservative is not particularly limited and can be appropriately selected depending on the purpose, such as benzoate, sorbate, dehydroacetate, paraoxybenzoate, 2,4,4'-trichloro- 2'-Hydroxydiphenyl ether, 3,4,4'-trichlorocarbanilide, benzalkonium chloride, hinokitiol, resorcinol, methylchloroisothiazolinone/methylisothiazolinone liquid (product name: Caisson CG, Rohm & Haas)・Manufactured by Japan Co., Ltd.), salicylic acid, pentanediol, phenoxyethanol, ethanol, etc. These may be used alone or in combination of two or more.

The content of the preservative is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose. 1% by mass to 1% by mass is preferred.

-Antioxidant-
The antioxidant is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include dibutylhydroxytoluene, butylhydroxyanisole, ascorbic acid, and the like. These may be used alone or in combination of two or more.

The content of the antioxidant is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose. .1% to 1% by weight is preferred.

-Chelating agent-
The chelating agent is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include disodium edetate, ethylenediaminetetraacetate, hexametaphosphate, gluconic acid, and the like. These may be used alone or in combination of two or more.

The content of the chelating agent is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose. 1% by mass to 1% by mass is preferred.

-pH adjuster-
The pH adjuster is not particularly limited and can be appropriately selected depending on the purpose, for example, sodium hydroxide, potassium hydroxide, citric acid, hydrochloric acid, succinic acid, triethanolamine, aqueous ammonia, triisopropanol. Examples include amines, phosphoric acid, and glycolic acid. These may be used alone or in combination of two or more.

The content of the pH adjuster is not particularly limited as long as it can adjust the liquid skin cleansing composition to a desired pH, and can be appropriately selected depending on the purpose.

-Ultraviolet absorbing or scattering agent-
The ultraviolet absorbing or scattering agent is not particularly limited and can be appropriately selected depending on the purpose. Examples include kaolin and talc. These may be used alone or in combination of two or more.

The content of the ultraviolet absorbing or scattering agent is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose.

-vitamins-
The vitamins are not particularly limited and can be selected as appropriate depending on the purpose, for example, vitamin A, vitamin B group, vitamin C, vitamin D, vitamin E, vitamin F, vitamin K, vitamin P, vitamin Examples include U, carnitine, ferulic acid, γ-oryzanol, α-lipoic acid, orotic acid or derivatives thereof. These may be used alone or in combination of two or more.

The content of the vitamins is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose. 0.001% to 0.5% by weight is preferred.

-Amino acids-
The amino acids are not particularly limited and can be selected as appropriate depending on the purpose; for example, glycine, alanine, valine, leucine, isoleucine, phenylalanine, tryptophan, cystine, cysteine, methionine, proline, hydroxyproline, asparagine. Examples include acid, glutamic acid, arginine, histidine, lysine and derivatives thereof. These may be used alone or in combination of two or more.

The content of the amino acids is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose. 0.001% to 0.5% by weight is preferred.

-Water-insoluble polymer compound powder-
The water-insoluble polymer compound powder is not particularly limited and can be appropriately selected depending on the purpose, and examples include nylon and polyethylene. These may be used alone or in combination of two or more.

The content of the water-insoluble polymer compound powder is not particularly limited as long as it does not impair the effects of the present invention, and can be appropriately selected depending on the purpose.

<<pH>>
The pH at 25°C of the liquid skin cleansing composition is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 9.5 to 11.0, and 9.8 to 10.6. More preferred.
The pH can be measured using, for example, a glass electrode colored hydrogen ion concentration indicator HM-30R (manufactured by TOA DKK, electrode type GST-5721).

<<Viscosity>>
The viscosity at 25° C. of the liquid skin cleansing composition is not particularly limited and can be appropriately selected depending on the container used, etc., but is preferably 4 mPa·s to 40 mPa·s, and 8 mPa·s to 30 mPa·s. -s is more preferable.
For example, when using a pump former container capable of discharging foam by pressing down the nozzle part, and one each of 305 mesh and 200 mesh porous membranes, the liquid skin cleanser composition The viscosity of the product is preferably 30 mPa·s or less, more preferably 25 mPa·s or less.
The viscosity is measured, for example, using a BM type viscometer (manufactured by Tokyo Keiki Co., Ltd.) at a sample temperature of 25°C, a rotation speed of 60 rpm, and a No. The viscosity can be measured by measuring the viscosity after 1 minute using the rotor No. 1.

<<Container>>
The liquid skin cleansing composition is of a type that is filled into a foamer container and discharged in the form of a foam.

The foamer container is not particularly limited and can be appropriately selected from known foamer containers, such as non-gas foam discharge containers, aerosol containers using a propellant and a pressure-resistant container, and the like. Among these, non-gas type foam discharge containers are preferred.

The non-gas type foam discharge container is not particularly limited as long as it can mix the liquid skin cleansing composition with air and discharge it in a foamed state, and can be appropriately selected depending on the purpose. , a squeeze foamer container that can discharge foam by manually squeezing the bottle body, and a pump foamer container that can discharge foam by pressing down on a nozzle. As such a former container, those manufactured by Daiwa Seikan Co., Ltd., Yoshino Kogyo Co., Ltd., etc. can be used. More specifically, as the former container, former containers described in JP-A-7-315463, JP-A-8-230961, JP-A-2005-193972, etc. can be used.

The non-gas type foam discharge container has a foam forming member, specifically, a porous membrane body (preferably made of a plastic material such as nylon, polyester, or polyolefin) for forming foam. , bubbles are formed when the liquid skin cleansing composition passes through the porous membrane.

The mesh of the porous membrane body is not particularly limited and can be appropriately selected depending on the purpose, but is preferably 100 mesh or more, more preferably 100 mesh to 400 mesh, and particularly preferably 200 mesh to 305 mesh. .
Further, the number of porous membranes is not particularly limited and can be appropriately selected depending on the purpose, but from the viewpoint of improving foaming performance, 2 to 4 is preferable.

<<Manufacturing method>>
The method for producing the liquid skin cleansing composition is not particularly limited and can be appropriately selected depending on the purpose, for example, the (A) component, the (B) component, and the (C) component, Furthermore, if necessary, it can be obtained by mixing the other components and purified water (the remaining amount is blended so that the entire liquid skin cleansing composition is 100% by mass).

Specifically, after dissolving the component (A) and the component (C) in purified water heated to 70°C to 80°C, the solution is cooled to 40°C or lower, and then the component (B) is added. It can be manufactured by

The liquid skin cleanser composition may be prepared using an apparatus. The device is not particularly limited and can be appropriately selected depending on the purpose, such as a stirring device equipped with stirring blades that have shearing force and can mix the whole.
The stirring blade is not particularly limited and can be appropriately selected depending on the purpose, and includes, for example, a propeller, a turbine, a disper, and the like.

<<Applications>>
The application site of the liquid skin cleansing composition is not particularly limited and can be appropriately selected depending on the purpose. For example, it can be used on the whole body, face, hands, etc.

The use of the liquid skin cleansing composition is not particularly limited and can be appropriately selected depending on the purpose, but the use of the liquid skin cleansing composition may be selected depending on the purpose. It has a good texture and has excellent discharge properties from the foamer container, and can discharge foam with good foam quality, so it can be used, for example, in body shampoo, body soap, facial cleansing foam, hand soap, foaming hand soap, and cleansing products. It can be used for foam, makeup removal, etc.

EXAMPLES The present invention will be specifically explained below with reference to Examples and Comparative Examples, but the present invention is not limited to these Examples at all. In addition, in the following Examples and Comparative Examples, unless otherwise specified, all descriptions of "%" represent "mass %", the total amount is 100 mass %, and each component is a value converted to pure content. In addition, the mass ratio of the total content (mass%) of components (A) and (B) to the content (mass%) of component (C) [{(A)+(B)}/(C)] , and the mass ratio [(A)/(B)] of the content (mass%) of component (A) to the content (mass%) of component (B) is rounded to the second decimal place and Below, we have listed down to the first place.

(Examples 1 to 23 and Comparative Examples 1 to 7)
Liquid skin cleansing compositions of Examples 1 to 23 and Comparative Examples 1 to 7 having the compositions and contents shown in Tables 1 to 4 below were prepared according to the following method.
Purified water is heated to 70°C to 80°C, and the anionic surfactant as the component (A), the lanolin alcohol as the component (C), and the common components polyoxyethylene cetyl ether and propylene glycol are added thereto. After the mixture was dissolved, the mixture was cooled to 40° C. or lower, and then the cationic polymer as component (B) was added and mixed to obtain a mixture. Note that the amount of purified water used initially was such that the mass of the mixture was 95% by mass of the mass required for the final liquid skin cleansing composition.
After that, if the predetermined pH is not reached, potassium hydroxide, which is a common ingredient, is added to the mixture to adjust the pH to 7.5 to 10.1, and then lauric acid amidopropyl betaine, which is a common ingredient, and fragrance are added to the mixture. In addition, purified water was added so that the total amount was 100% by mass to obtain liquid skin cleansing compositions of Examples 1 to 23 and Comparative Examples 1 to 7.

In addition, when preparing the liquid skin cleansing composition, a propeller was used as a stirring blade, and stirring was performed using a three-one motor (HEIDON BL1200, manufactured by Shinto Kagaku Co., Ltd.). Further, the pH was measured at 25° C. using a pH meter (HM-30R, manufactured by TOA DKK).

The obtained liquid skin cleansing compositions of Examples 1 to 23 and Comparative Examples 1 to 7 were filled into a container with a former pump dispenser [discharge volume 3 mL, manufactured by Yoshino Kogyo Co., Ltd.] and used for the following evaluation. .

The liquid skin cleansing compositions of Examples 1 to 23 and Comparative Examples 1 to 7 were evaluated as follows: "No skin tightness after towel drying" and "No skin tightness after towel drying." ``Durability'', ``Skin texture after towel drying'', and ``Dischargeability and foam quality from the pump'' were evaluated and determined. The results are shown in Tables 1 to 4 below.

<Lack of firmness on skin after towel drying>
Ten expert evaluators took three pumps (approximately 9 g) of the liquid skin cleansing compositions of Examples 1 to 23 and Comparative Examples 1 to 7 into their hands, washed their entire bodies, rinsed with warm water at 40°C, and washed with towels. It was dry. Thereafter, after being allowed to rest for 30 minutes in a constant temperature room at 25° C., “no feeling of tightness on the skin after towel drying” was evaluated based on the following evaluation criteria. The results were determined by calculating the average score of 10 people and making judgments based on the following criteria.
-Evaluation criteria for "no feeling of tightness on the skin after towel drying"-
4 points: I don't feel any tightness at all 3 points: I don't feel any tightness 2 points: I feel a little tightness 1 point: I feel a strong feeling of tightness - Criteria for determining "no tightness on the skin after towel drying" -
◎: Average score is 3.5 points or more and 4.0 points or less ○: Average score is 3.0 points or more and less than 3.5 points △: Average score is 2.0 points or more and less than 3.0 points Less than ×: Average score is less than 2.0 points

<Sustainability of skin tightness after towel drying>
Ten expert evaluators took three pumps (approximately 9 g) of the liquid skin cleansing compositions of Examples 1 to 23 and Comparative Examples 1 to 7 into their hands, washed their entire bodies, rinsed with warm water at 40°C, and washed with towels. It was dry. Thereafter, after resting in a constant temperature room at 25° C. for 4 hours, “sustainability of skin tightness after towel drying” was evaluated based on the following evaluation criteria. The results were determined by calculating the average score of 10 people and making judgments based on the following criteria.
-Evaluation criteria for "sustainability of skin tightness after towel drying"-
4 points: I don't feel any tightness at all. 3 points: I don't feel any tightness. 2 points: I feel a little tightness. 1 point: I feel a strong sense of tightness. Judgment criteria-
◎: Average score is 3.5 points or more and 4.0 points or less ○: Average score is 3.0 points or more and less than 3.5 points △: Average score is 2.0 points or more and less than 3.0 points Less than ×: Average score is less than 2.0 points

<Skin texture after towel drying>
Before starting to use the liquid skin cleansing compositions of Examples 1 to 23 and Comparative Examples 1 to 7, skin replicas of 10 subjects (men and women aged 25 to 39 years) were collected. A skin replica is a copy of the skin surface shape, and after resting for 30 minutes in a constant temperature room at 25°C, 10 subjects applied silicone rubber as a replica agent to an area 1 cm long and 1 cm wide on the inside of their forearms. (Product name: SILFLO, manufactured by Flexico) was applied, left to dry for 15 minutes, and then peeled off. Regarding the obtained skin replica, the maximum depth (μm) of the largest wrinkle was measured using a microscope (Digital Microscope VHX-900, manufactured by Keyence Corporation), and this value was defined as the "initial value".

Next, 10 subjects took 3 pumps (approximately 9 g) of the liquid skin cleansing compositions of Examples 1 to 23 and Comparative Examples 1 to 7 on their hands once a day for 7 consecutive days, and then washed their entire bodies. , rinsed with warm water at 40°C and towel dried. After towel drying the liquid skin cleansing compositions of Examples 1 to 23 and Comparative Examples 1 to 7 on the seventh day (seventh time) from the start of use, after resting for 30 minutes in a constant temperature room at 25°C, the initial value A skin replica of the same site on the inside of the forearm where the measurements were taken was taken in the same manner as described above. Regarding the obtained skin replica, the maximum depth (μm) of the largest wrinkle was measured using a microscope (Digital Microscope VHX-900), and this value was defined as the "evaluation value".

The rate of change (%) was calculated from the initial value and the evaluation value based on the following formula (1), and the "skin texture after towel drying" was evaluated. The results were determined by calculating the average value of the rate of change (%) of 10 people, and making judgments based on the following criteria.
Rate of change (%) = (evaluation value - initial value) / initial value x 100... Formula (1)
-Judgment criteria for "skin texture after towel drying"-
◎: Rate of change is 120% or more ○: Rate of change is 105% or more and less than 120% △: Rate of change is 95% or more and less than 105% ×: Rate of change is less than 95%

<Discharge performance and foam quality from pump>
Ten expert evaluators tested the liquid skin cleansing compositions of Examples 1 to 23 and Comparative Examples 1 to 7 filled in containers with a foamer pump dispenser [discharge volume 3 mL, manufactured by Yoshino Kogyo Co., Ltd.] at 25°C. The "dischargeability and foam quality from the pump" was evaluated based on the following evaluation criteria based on the ease of pushing the pump and the texture of the foam at the time of discharge. The results were determined by calculating the average score of 10 people and making judgments based on the following criteria.
-Evaluation criteria for "dischargeability and foam quality from the pump"-
4 points: The pump is easy to press, and fine bubbles are discharged. 3 points: The pump is easy to press, but there are some bubbles with large particles mixed in. 2 points: The pump is a little difficult to press, and there are a lot of bubbles with large particles mixed in. 1 point. : The pump is very difficult to push, and only large particles of foam are ejected - Criteria for determining "discharge performance from the pump and foam quality" -
◎: Average score is 3.5 points or more and 4.0 points or less ○: Average score is 3.0 points or more and less than 3.5 points △: Average score is 2.0 points or more and less than 3.0 points Less than ×: Average score is less than 2.0 points

Details of each component used in Examples 1 to 23 and Comparative Examples 1 to 7 are shown in Table 5 below.

※１：ミリスチン酸カリウムは、ミリスチン酸（ＮＡＡ－１４２、日油株式会社製）を水酸化カリウム（ＡＧＣ株式会社製、液体苛性カリ）で中和させて調製したものを使用した。
※２：ラウリン酸カリウムは、ラウリン酸（ＮＡＡ－１２２、日油株式会社製）を水酸化カリウム（ＡＧＣ株式会社製、液体苛性カリ）で中和させて調製したものを使用した。
※３：パルミチン酸カリウムは、パルミチン酸（ＮＡＡ－１６０、日油株式会社製）を、水酸化カリウム（液体苛性カリ、ＡＧＣ株式会社製）で中和させて調製したものを使用した。
※４：ステアリン酸カリウムは、ステアリン酸（ＮＡＡ－１８０、日油株式会社製）を、水酸化カリウム（液体苛性カリ、ＡＧＣ株式会社製）で中和させて調製したものを使用した。

*1: Potassium myristate was prepared by neutralizing myristic acid (NAA-142, manufactured by NOF Corporation) with potassium hydroxide (liquid caustic potash, manufactured by AGC Corporation).
*2: Potassium laurate was prepared by neutralizing lauric acid (NAA-122, manufactured by NOF Corporation) with potassium hydroxide (liquid caustic potash, manufactured by AGC Corporation).
*3: Potassium palmitate was prepared by neutralizing palmitic acid (NAA-160, manufactured by NOF Corporation) with potassium hydroxide (liquid caustic potash, manufactured by AGC Corporation).
*4: Potassium stearate was prepared by neutralizing stearic acid (NAA-180, manufactured by NOF Corporation) with potassium hydroxide (liquid caustic potash, manufactured by AGC Corporation).

Claims (4)

(A) an anionic surfactant;
(B) a cationic polymer containing 40 mol% or more of structural units derived from dimethyldiallylammonium chloride;
(C) lanolin alcohol;
Contains
The mass ratio of the total content of the (A) component and the (B) component to the content of the (C) component [{(A)+(B)}/(C)] is 40 to 1,050. and
A liquid skin cleansing composition, characterized in that it is filled into a foamer container. The liquid skin cleansing composition according to claim 1, wherein the mass ratio [(A)/(B)] of the content of the component (A) to the content of the component (B) is 24 to 80. The content of the component (A) is 12% by mass to 20% by mass, the content of the component (B) is 0.2% by mass to 0.8% by mass, and the content of the component (C) is 12% by mass to 20% by mass. The liquid skin cleanser composition according to claim 1, wherein the amount is 0.002% to 0.4% by weight. The liquid skin cleansing composition according to claim 1, having a viscosity at 25° C. of 5 mPa·s to 30 mPa·s.