JP2024004799A - Liquid skin cleansing agent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid skin cleansing agent composition that avoids skin irritation, gives a moist feel to the skin after towel drying without causing tightness or stickiness, and offers a good balance between dense foam and easy foam breaking.

SOLUTION: A liquid skin cleansing agent composition includes (A) an amino acid-based surfactant, (B) a cationic polymer containing 40 mol% or more of a dimethyldiallylammonium chloride-derived structural unit, (C) a cationized polysaccharide, and (D) at least one dextrin of hydroxyalkylated cyclodextrin and highly branched cyclic dextrin.

SELECTED DRAWING: None

COPYRIGHT: (C)2024,JPO&INPIT

Description

TECHNICAL FIELD This invention relates to liquid skin cleanser compositions.

Liquid skin cleansing compositions such as hand soaps and body soaps have traditionally been required to have good foam performance such as foam density, and in recent years, products that provide a moist feeling to the skin after towel drying have been required. There is a growing demand for a feeling of use, such as the fact that the skin does not feel tight or sticky after being towel-dried, and that there is no skin irritation.

For example, a cleaning composition containing an amino acid-based surfactant as the main cleaning component and an N-acylamino acid salt that alleviates skin irritation, various surfactants, a cationic polymer, and a water-soluble polymer (Patent Document 1) ), a skin cleansing composition containing an N-acyl amino acid salt, a solid or semi-solid oil, and a cationized polysaccharide (see Patent Document 2), an amino acid surfactant, a cationic polymer, and an amide sulfonate. A skin cleansing composition containing a betaine type amphoteric surfactant (see Patent Document 3) has been disclosed. However, these skin cleansing compositions are insufficient in terms of foam density, moist feeling on the skin after towel drying, no sticky feeling on the skin after towel drying, rinsing speed, and foam breaking properties. It wasn't.

Furthermore, with the aim of solving the global issues we will face in the future and building a sustainable future, there is a growing awareness at the consumer level of reducing environmental impact. However, liquid skin cleansing compositions with good foaming properties have poor foam-breaking properties and require a long rinsing time to wash away the foam, which necessitates using a large amount of water to wash away the foam, which reduces the environmental impact. There is a problem in that it is not suitable from the perspective of initiatives.

Therefore, there is no skin irritation, it can give a moist feeling to the skin after towel drying, there is no feeling of tightness or stickiness on the skin after towel drying, and it has foam performance such as dense foam and excellent foam breakage. There is a desire to provide a liquid skin cleansing composition that is compatible with both skin and skin properties.

JP 2019-1724 Publication Japanese Patent Application Publication No. 2013-163658 Japanese Patent Application Publication No. 2020-117469

The present invention aims to solve the above-mentioned conventional problems and achieve the following objects. That is, the present invention does not cause skin irritation, can provide a moist feeling to the skin after towel drying, does not give a feeling of tightness or stickiness to the skin after towel drying, and has dense foam and excellent foam breaking properties. It is an object of the present invention to provide a liquid skin cleansing composition that can simultaneously achieve the following.

As a result of intensive studies to achieve the above object, the present inventors found that (A) an amino acid-based surfactant and (B) a cationic surfactant containing 40 mol% or more of structural units derived from dimethyldiallylammonium chloride. A liquid skin cleansing composition containing a polymer, (C) a cationized polysaccharide, and (D) a dextrin selected from at least one of a hydroxyalkylated cyclodextrin and a highly branched cyclic dextrin is free from skin irritation. It was discovered that the present invention can impart a moist feeling to the skin after towel drying, does not give a feeling of tightness or stickiness to the skin after towel drying, and can achieve both dense foam and excellent foam breaking properties. It has been completed.

The present invention is based on the above findings by the present inventors, and means for solving the above problems are as follows. That is,
<1> (A) Amino acid surfactant;
(B) a cationic polymer containing 40 mol% or more of structural units derived from dimethyldiallylammonium chloride;
(C) a cationized polysaccharide;
(D) a dextrin of at least one of a hydroxyalkylated cyclodextrin and a highly branched cyclic dextrin;
A liquid skin cleansing composition characterized by containing:
<2> Mass ratio of the content of at least one of the hydroxyalkylated cyclodextrin and the highly branched cyclic dextrin (D) to the content of the amino acid surfactant (A) [(D)/(A) ] is 0.005 to 0.15, the liquid skin cleansing composition according to <1> above.
<3> (E) The liquid according to <1> or <2>, further comprising at least one amphoteric surfactant selected from aminopropionic acid-based amphoteric surfactants and betaine-based amphoteric surfactants. A skin cleansing composition.
<4> The content of the component (A) is 1% by mass to 10% by mass, the content of the component (B) is 0.1% by mass to 0.8% by mass, and the content of the component (C) is 1% by mass to 10% by mass. <1> to <3>, wherein the content of component (D) is 0.1% to 0.8% by mass, and the content of component (D) is 0.05% to 0.09% by mass. The liquid skin cleansing composition according to any one of the above.
<5> The liquid skin cleansing composition according to any one of <3> to <4>, wherein the content of the component (E) is 3% by mass to 15% by mass.
<6> The liquid skin cleansing composition according to any one of <1> to <5>, which is filled in a former container.

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 there is no skin irritation, and it is possible to impart a moist feeling to the skin after towel-drying, and to reduce the feeling of tightness on the skin after towel-drying. It is possible to provide a liquid skin cleansing composition that does not have a sticky feeling and has both dense foam and excellent foam-breaking properties.

(Liquid skin cleansing composition)
The liquid skin cleansing composition of the present invention comprises (A) an amino acid surfactant, (B) a cationic polymer containing 40 mol% or more of structural units derived from dimethyldiallylammonium chloride, and (C) a cationic polymer. (D) at least one of a hydroxyalkylated cyclodextrin and a highly branched cyclic dextrin, and (E) an aminopropionic acid-based amphoteric surfactant and a betaine-based amphoteric surfactant. It is preferable to contain at least one selected amphoteric surfactant, and further contain other components as necessary.

<(A) Amino acid surfactant>
The amino acid surfactant as the component (A) is mainly included to suppress skin irritation, improve the density of the foam, and improve the moist feeling of the skin after towel drying.
In this specification, "denseness of the foam" refers to the fact that when the foam is pressed together with both hands, the bounce is hard, and the foam that adheres to the hands does not easily drip even when the hands are turned upside down. means.

The amino acid surfactant of component (A) is not particularly limited and can be selected as appropriate depending on the purpose, but amino acid structures such as glycine, glutamic acid, methylalanine, aspartic acid, methyltaurine, etc. in the hydrophilic part are preferred. An amino acid surfactant having an acyl group with an alkyl chain length of 8 to 18 in the hydrophobic portion is preferred, and an N-acylglycine salt is more preferred. These may be used alone or in combination of two or more.

The acyl group is not particularly limited and can be selected as appropriate depending on the purpose, for example, lauroyl group, myristoyl group, coconut oil fatty acid acyl group (cocoyl group), octanoyl group, decanoyl group, palmitoyl group, stearoyl group. group, oleoyl group, linoleoyl group, etc.

Specific examples of the amino acid surfactant of component (A) include N-lauroyl-N-methyl-β-alanine salt, N-myristoyl-N-methyl-β-alanine salt, and N-cocoyl-N-methyl. -β-alanine salt, N-lauroylglutamate, N-myristoylglutamate, N-cocoylglutamate, N-cocoylglycine salt, N-lauroylglycine salt, N-myristoylglycine salt, N-lauroyl aspartate, N- - Examples include cocoyl methyl taurine salt. Among these, N-cocoylglycine salt is preferred as the amino acid surfactant of component (A).

The counter ion of the amino acid surfactant of the component (A) is not particularly limited and can be selected as appropriate depending on the purpose, for example, alkali metal ions such as sodium ions and potassium ions; ammonium ions; Examples include alkanolamines such as ethanolamine, diethanolamine, and triethanolamine.

Specific examples of the N-cocoylglycine salt include N-cocoylglycine potassium, N-cocoylglycine sodium, and N-cocoylglycine triethanolamine.

The amino acid surfactant of component (A) may be appropriately synthesized or a commercially available product.
Commercially available amino acid surfactants as component (A) include, for example, the trade names of Alanone (registered trademark) ALE (sodium N-lauroyl-N-methyl-β-alanine) and Alanone (registered trademark) AME. (N-Myristoyl-N-methyl-β-alanine sodium), Alanone (registered trademark) ACE (N-cocoyl-N-methyl-β-alanine sodium) (manufactured by Kawaken Fine Chemical Co., Ltd.), Aminosurfact ( (registered trademark) ALMS-P1 (sodium N-lauroylglutamate), Aminosurfact (registered trademark) AMMS-P1 (sodium N-myristoylglutamate) (manufactured by Asahi Kasei Finechem Corporation), Aminosurfact (registered trademark) ACDS- L (sodium N-cocoyl glutamate), Aminoformer (registered trademark) FLDS-L (sodium N-lauroyl aspartate) (manufactured by Asahi Kasei Finechem Corporation), Amirite (registered trademark) GCK-12K (N-cocoyl glycine) Potassium (manufactured by Ajinomoto Co., Inc.), Diapon (registered trademark) K-SF (sodium N-cocoylmethyltaurate, manufactured by NOF Corporation), and the like.

The content of the amino acid surfactant as the component (A) is not particularly limited and can be selected as appropriate depending on the purpose. From the viewpoint of suppressing irritation, the amount is preferably 0.5% by mass to 15% by mass, more preferably 1% by mass to 10% by mass, based on the total amount of the liquid skin cleansing composition. When the content of the component (A) is 0.5% by mass or more, the density of the foam and the moist feeling of the skin after towel drying are good, and when the content is 15% by mass or less, skin irritation is reduced. This can be suitably suppressed.

<(B) Cationic polymer containing 40 mol% or more of structural units derived from dimethyldiallylammonium chloride>
The cationic polymer containing 40 mol % or more of structural units derived from dimethyldiallylammonium chloride as the component (B) is mainly contained to improve the moist feeling of the skin after towel drying.

The cationic polymer as the component (B) 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. For example, Examples include dimethyldiallylammonium chloride copolymer and 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.

The molar ratio of the structural unit derived from dimethyldiallylammonium chloride in the dimethyldiallylammonium chloride-acrylic acid copolymer of component (B) is 40 mol%, but this does not affect the moist feeling of the skin after towel drying. Therefore, it is preferably 65 mol% or more, more preferably 95 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 selected as appropriate depending on the purpose, but from the viewpoint of moisturizing the skin after towel drying, it is from 10,000 to 10,000. 1,000,000 is preferred, and 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 component (B) with a solid content of 30% to 44% by mass is not particularly limited and can be appropriately selected depending on the purpose, but it is 10 mPa. s to 15,000 mPa·s is preferable, and 20 mPa·s to 12,000 mPa·s is more preferable.
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 copolymer, manufactured by Nippon 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 copolymer, 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 (mole ratio) in the general formula (B1), molar ratio of the structural unit derived from dimethyldiallylammonium chloride is 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 (B1), 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, Marquat 295, and Marquat 280 are preferable as the cationic polymer of the component (B) from the viewpoint of moisturizing the skin after towel drying.

The content of the cationic polymer of the component (B) is not particularly limited and can be selected as appropriate depending on the purpose, but it may be used to impart a moist feeling to the skin after towel drying and to the skin after towel drying. From the viewpoint of suppressing the feeling of tightness, the amount is preferably 0.1% by mass to 1% by mass, more preferably 0.1% by mass to 0.8% by mass, based on the total amount of the liquid skin cleansing composition. When the content of the component (B) is 0.1% by mass or more, the skin feels moisturized after towel drying, and when it is 1% by mass or less, the skin feels tight after towel drying. This can be suitably suppressed.

<(C) Cationized polysaccharide>
The cationic polysaccharide as the component (C) is mainly included to improve the density of the foam and to suppress the feeling of tightness on the skin after towel drying.

The cationized polysaccharide of the component (C) is not particularly limited and can be appropriately selected depending on the purpose, such as cationized cellulose, cationized guar gum, cationized xanthan gum, cationized locust bean gum, etc. Can be mentioned. These may be used alone or in combination of two or more. Among these, as the cationized polysaccharide of the component (C), cationized cellulose is preferable because it provides good foam density and suppresses the feeling of tightness on the skin after towel drying.

The cationized polysaccharide of the component (C) may be appropriately synthesized or a commercially available product.
Commercially available products of the cationized polysaccharide as the component (C) include, for example, the trade names of Catinal HC-100 (cationized cellulose, manufactured by Toho Chemical Industry Co., Ltd.), Lavor Gum (registered trademark) CG-M (cationized Guar gum, manufactured by Sumitomo Pharma Food & Chemical Co., Ltd.), Lavor Gum (registered trademark) CX (cationized xanthan gum manufactured by Sumitomo Pharma Food & Chemical Co., Ltd.), Cachinal CLB-100 (cationized locust bean gum, manufactured by Toho Chemical Industry Co., Ltd.) Examples include.

The content of the cationized polysaccharide as the component (C) is not particularly limited and can be selected as appropriate depending on the purpose, but it may affect the density of the foam, the moist feeling of the skin after towel drying, and the From the viewpoint of suppressing the feeling of tightness on the skin afterwards, the amount is preferably 0.1% by mass to 1% by mass, more preferably 0.1% by mass to 0.8% by mass, based on the total amount of the liquid skin cleansing composition. preferable. When the content of the component (C) is 0.1% by mass or more, the density of the foam is good, and the feeling of tightness on the skin after towel drying can be suitably suppressed, and the content is 1% by mass or less. The skin feels moisturized after being towel-dried.

<(D) Dextrin of at least one of hydroxyalkylated cyclodextrin and highly branched cyclic dextrin>
At least one of hydroxyalkylated cyclodextrin and highly branched cyclic dextrin as the component (D) is contained mainly to improve foam-breaking properties.
In addition, in this specification, "bubble-breaking property" means the property that the formed foam disappears. In particular, the foam-breaking property of the liquid skin cleansing composition means the property that the foam disappears when water is added to the foam formed by the liquid skin cleansing composition, and the foam-breaking property of the liquid skin cleansing composition refers to the property that the foam disappears when water is added to the foam formed by the liquid skin cleansing composition. It can be evaluated by

<<Hydroxyalkylated cyclodextrin>>
The hydroxyalkylated cyclodextrin is a compound in which glucose is linked in a cyclic manner through α-1,4-glucoside bonds, and a hydroxyalkyl group is introduced into some of the hydroxyl groups of the cyclodextrin, for example, Examples include compounds represented by the following general formula (D1).

In the general formula (D1), R ¹ , R ² , and R ³ each independently represent a hydrogen atom, a hydroxymethyl group, a hydroxyethyl group, a hydroxypropyl group, or a hydroxybutyl group, and n is 6 to 6. Indicates an integer of 8, with 7 being preferred. However, R ¹ , R ² , and R ³ do not become hydrogen atoms at the same time.

By subjecting at least one of R ¹ , R ² , and R ³ to a substitution reaction, a hydroxyalkylated cyclodextrin such as hydroxypropylcyclodextrin can be obtained.

The degree of substitution of hydroxyalkyl groups in the hydroxyalkylated cyclodextrin is preferably 1 to 14 per cyclodextrin from the viewpoint of foam-breaking properties. When the degree of substitution is 1 to 14 per cyclodextrin, foam-breaking properties are good.

The cyclodextrin moiety of the hydroxyalkylated cyclodextrin is not particularly limited and can be selected as appropriate depending on the purpose. Examples include bonded β-cyclodextrin, and gamma-cyclodextrin in which eight glucose molecules are bonded in a ring. Among these, β-cyclodextrin is preferred.

The hydroxyalkylated cyclodextrin is not particularly limited and can be appropriately selected depending on the purpose, for example, hydroxymethyl-α-cyclodextrin, hydroxymethyl-β-cyclodextrin, hydroxymethyl-γ-cyclodextrin. , hydroxyethyl-α-cyclodextrin, hydroxyethyl-β-cyclodextrin, hydroxyethyl-γ-cyclodextrin, hydroxypropyl-α-cyclodextrin, hydroxypropyl-β-cyclodextrin, hydroxypropyl-γ-cyclodextrin, hydroxy Examples include butyl-α-cyclodextrin, hydroxybutyl-β-cyclodextrin, hydroxybutyl-γ-cyclodextrin, and the like. These may be used alone or in combination of two or more. Among these, hydroxypropyl-β-cyclodextrin is preferred as the hydroxyalkylated cyclodextrin from the viewpoint of foam-breaking properties.

The hydroxyalkylated cyclodextrin may be appropriately synthesized or a commercially available product.
Examples of the commercially available hydroxyalkylated cyclodextrin include, for example, the trade name Seldex (registered trademark) HP-β-CD (hydroxypropyl-β-cyclodextrin, manufactured by Nihon Shokuhin Kako Co., Ltd.).

<<Highly branched cyclic dextrin>>
The highly branched cyclic dextrin is also called "cluster dextrin" (registered trademark of Glico Nutritional Foods Co., Ltd.).

The highly branched cyclic dextrin refers to a glucan having an internally branched cyclic structure portion and an externally branched cyclic structure portion and has a weight average degree of polymerization in the range of 50 to 10,000.
Here, the internally branched cyclic structural moiety refers to a cyclic structural moiety formed by an α-1,4-glucosidic bond and an α-1,6-glucosidic bond.
The outer branched structural moiety refers to a glucan that is an acyclic structural moiety bonded to the inner branched cyclic structural moiety.

The highly branched cyclic dextrin preferably has a weight average molecular weight of 30,000 to 1,000,000, has one cyclic structure in the molecule, and has many glucan chains bonded to the cyclic structure. It is more preferable to mainly contain dextrin having a weight average degree of polymerization of about 2,500.
The weight average molecular weight of the highly branched cyclic dextrin can be measured using gel filtration chromatography-multi-angle light scattering (GPC-MALLS) analysis under the following conditions.
[Measurement condition]
Measuring device: Gel Permeation Chromatography System (manufactured by Shimadzu Corporation)
Measurement sample solution: The pure concentration of the component (D) is approximately 1,000 ppm (diluted with mobile phase)
Column: Polar organic solvent column (TSK-GELα column, manufactured by Tosoh Corporation)
Mobile phase: 0.5 mol/L sodium perchlorate solution Measurement wavelength: approximately 633 nm
Detector: Multi-angle light scattering detector (MALLS)
Standard product: polyethylene glycol with known molecular weight

The highly branched cyclic dextrin is produced, for example, by using starch as a raw material and treating it with an enzyme called a blanching enzyme. Starch, which is a raw material, consists of amylose, in which glucose is linearly linked through α-1,4-glucosidic bonds, and amylopectin, which has a complex branched structure through α-1,6-glucosidic bonds. It is a large molecule with many connected cluster structures. The enzyme used, branching enzyme, is a glucan chain transferase that is widely distributed in animals, plants, and microorganisms, and acts on the seams of the amylopectin cluster structure to catalyze a reaction that cyclizes it.
More specifically, the highly branched cyclic dextrin includes, for example, a dextrin having an inner branched cyclic structure part and an outer branched structure part and having a weight average degree of polymerization of 50 to 10,000, as described in JP-A-8-134104. Examples include glucans in the range. In the present specification, the highly branched cyclic dextrin can be understood with reference to the description in JP-A-8-134104.

The highly branched cyclic dextrin has a specific structure as described above and has a high weight average degree of polymerization (molecular weight), such as α-cyclodextrin (with 6 glucoses), β-cyclodextrin ( It is different from general cyclodextrins in which 6 to 8 glucose units are bonded, such as γ-cyclodextrin (7 glucose units) and γ-cyclodextrin (8 glucose units).
Furthermore, hydroxyalkylated cyclodextrin is a cyclodextrin in which hydroxyalkyl groups are introduced into some of the hydroxyl groups, and is different from the highly branched cyclic dextrin.

The highly branched cyclic dextrin may be appropriately synthesized or a commercially available product.
Examples of commercial products of the highly branched cyclic dextrin include the trade name Cluster Dextrin (registered trademark of Glico Nutrient Foods Co., Ltd., manufactured by Glico Nutrient Foods Co., Ltd.).

Among these, the component (D) is preferably hydroxyalkylated cyclodextrin, more preferably hydroxypropyl-β-cyclodextrin, from the viewpoint of foam-breaking properties.

The content of at least one of the hydroxyalkylated cyclodextrin and the highly branched cyclic dextrin as the component (D) is not particularly limited and can be appropriately selected depending on the purpose, but it may be selected depending on the density and breakage of the foam. From the viewpoint of good foaming properties, it is preferably 0.01% by mass to 0.09% by mass, more preferably 0.05% by mass to 0.09% by mass, based on the total amount of the liquid skin cleansing composition. . When the content of the component (D) is 0.01% by mass or more, foam breaking properties are good, and when the content is 0.09% by mass or less, foam density is good.

<<Mass ratio [(D)/(A)]>>
Mass ratio of the content (mass %) of at least one of the hydroxyalkylated cyclodextrin and highly branched cyclic dextrin of the component (D) to the content (mass %) of the amino acid surfactant of the component (A) [ (D)/(A)] is not particularly limited and can be selected as appropriate depending on the purpose, but from the viewpoint of rinsing speed and suppression of sticky feeling after towel drying, from 0.005 to 0. .15 is preferred, and 0.01 to 0.09 is more preferred. When the mass ratio [(D)/(A)] is 0.005 or more, rinsing is fast, and when it is 0.15 or less, the sticky feeling after towel drying can be suitably suppressed.

<(E) At least one amphoteric surfactant selected from aminopropionic acid-based amphoteric surfactants and betaine-based amphoteric surfactants>
At least one amphoteric surfactant selected from aminopropionic acid-based amphoteric surfactants and betaine-based amphoteric surfactants as component (E) is included in order to further improve foam density. is preferred.

<<Aminopropionic acid-based amphoteric surfactant>>
The aminopropionic acid-based amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose, for example, lauryl aminopropionate, lauryl amino dipropionate, N-coco fatty acid acyl- Examples include N'-carboxyethyl-N'-hydroxyethylethylenediamine salt. These may be used alone or in combination of two or more.

The counter ion for the aminopropionic acid-based amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose. For example, alkali metal ions such as sodium ion and potassium ion; ammonium ion; monoethanolamine; , diethanolamine, triethanolamine, and other alkanolamines. Among these, sodium ion is preferable as the counter ion of the aminopropionic acid-based amphoteric surfactant.

<<Betaine-based amphoteric surfactant>>
The betaine-based amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose, such as imidazoline-type amphoteric surfactants, carbobetaine-type amphoteric surfactants, and sulfobetaine-type amphoteric surfactants. Examples include. These may be used alone or in combination of two or more.

-Imidazoline type amphoteric surfactant-
The imidazoline type amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include amidoamine type amphoteric surfactants.

Examples of the amidoamine type amphoteric surfactant include coconut oil alkyl-N-hydroxyethylimidazolinium betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, and the like.

-Carbobetaine type amphoteric surfactant-
The carbobetaine-type amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include alkylbetaine-type amphoteric surfactants, alkylamidobetaine-type amphoteric surfactants, and the like.

Examples of the alkyl betaine type amphoteric surfactants include lauryl dimethylamino acetic acid betaine and stearyl dimethyl amino acetic acid betaine.

Examples of the alkylamide betaine type amphoteric surfactants include coconut oil fatty acid amidopropyl betaine, amidopropyl laurate betaine, and amidopropyl laurate dimethylaminoacetic acid betaine.

-Sulfobetaine type amphoteric surfactant-
The sulfobetaine type amphoteric surfactant is not particularly limited and can be appropriately selected depending on the purpose; examples thereof include alkylsulfobetaine type amphoteric surfactants, alkylhydroxysulfobetaine type amphoteric surfactants, etc. It will be done.

Examples of the alkylsulfobetaine type amphoteric surfactants include coconut oil fatty acid dimethylsulfopropylbetaine, lauramidopropylhydroxysultaine, and the like.

Examples of the alkylhydroxysulfobetaine type amphoteric surfactant include laurylhydroxysulfobetaine.

Among these, at least one amphoteric surfactant selected from aminopropionic acid-based amphoteric surfactants and betaine-based amphoteric surfactants as component (E) is lauryl amino, from the viewpoint of foam density. Propionate, lauryl amino dipropionate, coconut oil fatty acid amidopropyl betaine, amidopropyl laurate dimethylaminoacetic acid betaine are preferred, and lauryl aminopropionate, amidopropyl laurate dimethylamino acetic acid betaine are preferred. More preferred.

At least one amphoteric surfactant selected from aminopropionic acid-based amphoteric surfactants and betaine-based amphoteric surfactants as component (E) may be appropriately synthesized, or a commercially available product may be used. May be used.
A commercially available product of at least one amphoteric surfactant selected from aminopropionic acid-based amphoteric surfactants and betaine-based amphoteric surfactants as component (E) is, for example, the trade name Levon APL (β- Sodium laurylaminopropionate, manufactured by Sanyo Chemical Industries, Ltd.), Typolsoft LDP-30 (sodium laurylaminodipropionate, manufactured by Taiko Yushi Chemical Industry Co., Ltd.), Softazolin (registered trademark) NS (N-coco fatty acid acyl) -N'-carboxyethyl-N'-hydroxyethylethylenediamine sodium, manufactured by Kawaken Fine Chemical Co., Ltd.), Softazoline (registered trademark) CH (2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, Kawaken) Fine Chemical Co., Ltd.), Amhitol 24B (lauryldimethylaminoacetic acid betaine, Kao Corporation), Amhitol 86B (stearyldimethylaminoacetic acid betaine, Kao Corporation), Softazolin (registered trademark) CPB-R (lauric acid amidopropyl betaine) , manufactured by Kawaken Fine Chemicals Co., Ltd.), Amhitol 20AB (amidopropyl betaine laurate, manufactured by Kao Corporation), Enadicol L-30B (amidopropyl dimethylaminoacetic acid betaine laurate, manufactured by Lion Specialty Chemicals Co., Ltd.), Softazolin ( (registered trademark) LSB (lauramide propyl hydroxysultaine, manufactured by Kawaken Fine Chemicals Co., Ltd.), Amhitol 20HD (lauryl hydroxysulfobetaine, manufactured by Kao Corporation), and the like.

The content of at least one selected from aminopropionic acid-based amphoteric surfactants and betaine-based amphoteric surfactants as component (E) is not particularly limited and can be appropriately selected depending on the purpose. From the viewpoint of good foam density and moist skin after towel drying, the amount is preferably 1% by mass to 20% by mass, and 3% by mass to 15% by mass, based on the total amount of the liquid skin cleansing composition. % is more preferable. When the content of the component (E) is 1% by mass or more, the density of the foam is good, and when it is 20% by mass or less, the moist feeling of the skin after towel drying is good.

<Other ingredients>
In addition to the components (A), (B), (C), (D), and (E), the liquid skin cleanser composition also contains the effects of the present invention. Other components may be added as necessary within a range that does not impair the properties.

The other components are not particularly limited and can be appropriately selected depending on the purpose. For example, surfactants other than the component (A) and the component (E), the component (B), and the component ( C) Water-soluble polymer compounds other than ingredients, oils, silicones, alcohols, lanolin derivatives, protein derivatives, drugs (e.g. vitamins, anti-inflammatory agents, etc.), humectants, disinfectants, preservatives, pH adjusters , antioxidants, sequestering agents, ultraviolet absorbing or scattering agents, animal and plant extracts or their derivatives, chelating agents, amino acids, dyes, fragrances, pigments, inorganic powders, clay minerals, water-insoluble polymer compound powders, etc. Can be mentioned. These may be used alone or in combination of two or more.

- Surfactants other than component (A) and component (E) -
The surfactants other than the component (A) and the component (E) are not particularly limited and can be appropriately selected depending on the purpose. For example, anionic surfactants other than the component (A), Examples of the surfactant include amphoteric surfactants other than the component (E), nonionic surfactants, and cationic surfactants. These may be used alone or in combination of two or more.

The anionic surfactant other than the component (A) is not particularly limited and includes, for example, polyoxyethylene alkyl ether carboxylic acid or its salt, polyoxyethylene hydroxy ether carboxylic acid or its salt, polyoxyethylene alkyl amide ether. Examples include ether carboxylic acid type anionic surfactants such as carboxylic acids or salts thereof. 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, for example, alkyltrimethylammonium salts such as stearyltrimethylammonium chloride and lauryltrimethylammonium chloride, alkylpyridinium salts such as cetylpyridinium chloride, and distearyldimethylammonium chloride dialkyldimethylammonium salts. , poly(N,N'-dimethyl-3,5-methylenepiperidinium chloride), alkyl quaternary ammonium salt, alkyldimethylbenzylammonium salt, alkylisoquinolinium salt, dialkylmorphonium salt, POE-alkylamine , alkylamine salts, polyamine fatty acid derivatives, amyl alcohol fatty acid derivatives, benzalkonium chloride, benzethonium chloride, and the like.

The content of surfactants other than the component (A) and the component (E) 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 compounds other than component (C)-
The water-soluble polymer compounds other than the component (C) are not particularly limited and can be appropriately selected depending on the purpose, such as polyethylene glycol, highly polymerized polyethylene glycol, polyvinyl alcohol, polyglutamic acid, and carboxyvinyl polymer. , acrylic acid/alkyl methacrylate copolymer, and alkyl acrylate copolymer. These may be used alone or in combination of two or more.

The content of water-soluble polymer compounds 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; Natural and synthetic fatty acids such as oleic acid, isostearic acid, and behenic acid; Glycerol tri-2-ethylhexanoate, 2-ethylhexyl stearate, and stearin Examples include esters such as butyl acid, isopropyl myristate, isopropyl palmitate, octyldodecyl myristate, 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.

-Alcohol-
The alcohols are not particularly limited and can be appropriately selected depending on the purpose, and may be lower alcohols or higher alcohols.
Specific examples of the alcohols 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 the alcohol 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 3% by weight is preferred.

-Lanolin derivative-
The lanolin derivative is not particularly limited and can be appropriately selected depending on the purpose, and includes, for example, lanolin alcohol, lanolin alcohol fatty acid ester, lanolin alcohol polyethylene glycol ether, lanolin alcohol polypropylene glycol ether, and the like. These may be used alone or in combination of two or more.

The content of the lanolin derivative 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, and 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.

-Anti-inflammatory agent-
The anti-inflammatory agent is not particularly limited and can be appropriately selected depending on the purpose, and examples thereof include dipotassium glycyrrhizinate, stearyl glycyrrhetinate, allantoin, monoammonium glycyrrhizinate, glycyrrhetinic acid, and the like. These may be used alone or in combination of two or more.

The content of the anti-inflammatory component 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. 0.01% to 0.5% by weight is preferred.

-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.

-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, monoethanolamine, 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.

-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.

-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.

-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.

-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 thereof include nylon powder, polyethylene powder, and the like. 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 8.0 to 10.0, and 8.8 to 9.8. More preferred.
The pH can be measured using, for example, a glass electrode colored hydrogen ion concentration indicator HM-30R (electrode type GST-5721, manufactured by DKK Toa Co., Ltd.).

--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. When the liquid skin cleansing composition has a viscosity of 4 mPa·s to 40 mPa·s at 25° C., it can also be suitably used in a former container.
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 container containing the liquid skin cleansing composition is not particularly limited and can be appropriately selected depending on the purpose, such as a former container. By filling the foamer container with the liquid skin cleansing composition, the liquid skin cleansing composition can be 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 for forming bubbles, and the liquid skin cleansing composition passes through the porous membrane body. As a result, bubbles are formed.

The material of the porous membrane is not particularly limited and can be appropriately selected depending on the purpose, but plastic materials such as nylon, polyester, and polyolefin are preferred.

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.

In the non-gas type foam discharge container, the mixing ratio of the liquid skin cleansing composition to air is not particularly limited and can be selected as appropriate depending on the purpose. (volume ratio) is preferably 1:8 to 1:15, particularly preferably 1:10 to 1:13.

--Production method--
The method for producing the liquid skin cleansing composition is not particularly limited and can be appropriately selected depending on the purpose. The (D) component, preferably the (E) component, and if necessary, the other components and purified water (blended as the remaining amount so that the total liquid skin cleansing composition is 100% by mass). Can be obtained by mixing.

Specifically, the above-mentioned (A) component, the above-mentioned (B) component, the above-mentioned (C) component, and the above-mentioned (D) component are separately heated and dissolved in purified water, preferably the above ( It can be produced by adding and mixing component E) and, if necessary, the other components mentioned above.

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 selected as appropriate depending on the purpose. It does not make the skin feel tight or sticky, has a dense foam, has excellent foam-breaking properties, and has excellent rinsing speed. It can be used for foaming hand soaps, cleansing foams, makeup removers, etc. In particular, it can be used as body soaps that are lathered with cleaning tools such as nylon towels or cotton towels, and it is filled into a foamer container and discharged in the form of foam. It can be suitably used in body soaps.

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 content of the component (D) to the content of the component (A) [(D)/(A)] is calculated and described by rounding off to the fourth decimal place and then calculating to the third decimal place. .

(Examples 1 to 24 and Comparative Examples 1 to 10)
Liquid skin cleansing compositions having the compositions and contents shown in Tables 1 to 4, Table 6, and Table 7 below were prepared according to the following method.

A solution I was prepared by dissolving at least one of hydroxyalkylated cyclodextrin and highly branched cyclic dextrin as component (D), or cyclodextrin as a comparison component of component (D) and purified water in advance by heating.

A solution II was prepared by dissolving an amino acid surfactant as component (A) or an anionic surfactant as a comparative component in component (A) in purified water.

Next, in the solution II, a cationic polymer containing 40 mol% or more of structural units derived from dimethyldiallylammonium chloride as component (B) or derived from dimethyldiallylammonium chloride as a comparative component of component (B) is added. A cationic polymer containing less than 40 mol% of structural units, a cationic polysaccharide as component (C), or methacryloylethyldimethylbetaine, methacryloylethyltrimethylammonium chloride, and 2-hydroxy methacrylate as a comparative component of component (C). A solution III was prepared by adding and dissolving the solution I containing the ethyl copolymer and the component (D) or a comparative component of the component (D).

In addition, the total amount of purified water used for the above-mentioned solution I and the above-mentioned solution II is such that the mass of the above-mentioned solution III is 95% by mass of the mass required for the final liquid skin cleansing composition. amount was used.

Then, the common ingredients propylene glycol, phenoxyethanol, monoethanolamine, and fragrance are added, and if the specified pH (pH 9.4) is not reached, the common ingredient citric acid is added to adjust the pH to 9.4. After adjustment, purified water was added so that the total amount was 100% by mass to obtain liquid skin cleansing compositions of Examples 1 to 24 and Comparative Examples 1 to 10.

In addition, when preparing each of the liquid skin cleansing compositions, 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).

(Examples 25 to 28)
A liquid skin cleansing composition having the composition and content shown in Table 5 below was prepared according to the following method.
In the method for preparing each liquid skin cleansing composition of Examples 1 to 24 and Comparative Examples 1 to 10, when preparing solution III, component (E), an aminopropionic acid-based amphoteric surfactant and a betaine-based surfactant, is added. In the same manner as the preparation method of each liquid skin cleansing composition of Examples 1 to 24 and Comparative Examples 1 to 10, except for adding one or more amphoteric surfactants selected from amphoteric surfactants. , and each of the liquid skin cleansing compositions of Examples 25 to 28 were obtained.

<Evaluation>
Each of the obtained liquid skin cleansing compositions of Examples 1 to 28 and Comparative Examples 1 to 10 was filled into a container equipped with a former pump dispenser [discharge volume 3 mL, manufactured by Yoshino Kogyo Co., Ltd.], and the compositions were evaluated as follows. Using.

For each liquid skin cleansing composition of Examples 1 to 28 and Comparative Examples 1 to 10, "skin irritation", "denseness of foam", and "moist feeling of skin after towel drying" were evaluated as follows. , "sticky feeling of skin after towel drying", "tight feeling of skin after towel drying", "foam breaking property", and "rinsing speed" were evaluated and judged. The results are shown in Tables 1 to 7 below.

<<Skin irritation>>
Ten professional evaluators took two pumps (approximately 6 g) of each of the liquid skin cleansing compositions of Examples 1 to 28 and Comparative Examples 1 to 10 into their palms, washed their entire bodies, rinsed it off with warm water at 40°C, I towel dried it. Thereafter, after resting for 30 minutes in a constant temperature room at 25°C, "skin irritation" 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 for determining the average score.
-Evaluation criteria for "skin irritation"-
4 points: No skin irritation felt 3 points: Some skin irritation felt 2 points: Skin irritation felt 1 point: Strong skin irritation felt - Criteria for determining "skin irritation" -
◎: 3.5 points or more and 4.0 points or less ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points

＜＜Denseness of bubbles＞＞
Ten expert evaluators took two pumps (approximately 6 g) of each of the liquid skin cleansing compositions of Examples 1 to 28 and Comparative Examples 1 to 10 into their palms, washed their entire bodies, and then took the foam from the wash into their palms. The "denseness of the foam" was evaluated based on the following evaluation criteria by observing the bounce feeling when pressed together with both hands and the difficulty in dripping when the hands were turned upside down. The results were determined by calculating the average score of 10 people and making judgments based on the following criteria for determining the average score.
-Evaluation criteria for "foam density"-
4 points: The foam is hard and does not drip even when you hold your hand upside down. 3 points: The foam is slightly hard and does not drip even when you hold your hand upside down. 2 points: The foam is slightly soft and does not drip when you hold your hand upside down. 1 point: The foam is soft and drips when you turn your hand upside down - Criteria for determining the density of the foam -
◎◎: 3.5 points or more and 4.0 points or less ◎: 3.0 points or more and less than 3.5 points ○: 2.5 points or more and less than 3.0 points △: 2.0 points or more and less than 2.5 points × :Less than 2.0 points

<<Moist feeling of skin after towel drying>>
Ten professional evaluators took two pumps (approximately 6 g) of each of the liquid skin cleansing compositions of Examples 1 to 28 and Comparative Examples 1 to 10 into their palms, washed their entire bodies, rinsed it off with warm water at 40°C, I towel dried it. Thereafter, after resting for 30 minutes in a constant temperature room at 25° C., the "moist feeling of 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 for determining the average score.
-Evaluation criteria for "moist feeling of skin after towel drying"-
4 points: Feels a strong sense of moisture 3 points: Feels a sense of moisture 2 points: Feels a slight sense of moisture 1 point: Does not feel a sense of moisture - Judgment criteria for "moist feeling of skin after towel drying" -
◎: 3.5 points or more and 4.0 points or less ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

＜＜Skin feels sticky after towel drying＞＞
Ten expert evaluators took two pumps (approximately 6 g) of each of the liquid skin cleansing compositions of Examples 1 to 28 and Comparative Examples 1 to 10 into their palms, washed their entire bodies, rinsed it off with warm water at 40°C, I towel dried it. Thereafter, after resting for 30 minutes in a constant temperature room at 25° C., the "sticky feeling of 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 for determining the average score.
-Evaluation criteria for "stickiness of skin after towel drying"-
4 points: Does not feel sticky 3 points: Slightly feels sticky 2 points: Feels sticky 1 point: Strongly feels sticky - Judgment criteria for "sticky feeling on skin after towel drying" -
◎: 3.5 points or more and 4.0 points or less ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

＜＜Skin feels tight after towel drying＞＞
Ten professional evaluators took two pumps (approximately 6 g) of each of the liquid skin cleansing compositions of Examples 1 to 28 and Comparative Examples 1 to 10 into their palms, washed their entire bodies, rinsed it off with warm water at 40°C, I towel dried it. Thereafter, after being allowed to rest for 30 minutes in a constant temperature room at 25°C, the "tightness of 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 for determining the average score.
-Evaluation criteria for "skin tightness after towel drying"-
4 points: I don't feel any tightness 3 points: I feel a little tightness 2 points: I feel some tightness 1 point: I feel a strong feeling of tightness - Judgment criteria for "skin tightness after towel drying" -
◎: 3.5 points or more and 4.0 points or less ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

<<Bubble-breaking property>>
A professional evaluator took two pumps (approximately 6 g) of each of the liquid skin cleansing compositions of Examples 1 to 28 and Comparative Examples 1 to 10 in the palm of his hand and spread it over the entire surface of a black board (40 cm x 30 cm). Then, from a position 20 cm away from the application area of the liquid skin cleansing composition, use a mist sprayer (Z-305 Compact Trigger Pump, manufactured by Mitani Valve Co., Ltd.) to spray the liquid skin cleansing composition multiple times while changing the position. About 1.8 mL of water was sprayed over the whole area. 15 seconds after spraying, the black board was photographed with a digital camera (1x magnification), the photographed image was processed to show the entire surface of the black board, and image analysis software (WinRoof, manufactured by Mitani Shoji Co., Ltd.) was used. The ratio of the area where the black plate was not visible to the total area of the black plate was determined, and the "bubble breaking property" was evaluated based on the following evaluation criteria. This evaluation was repeated 10 times. The results were determined by calculating the average score of 10 times and judging based on the following criteria for determining the average score.
-Evaluation criteria for "foam-breaking property"-
4 points: The ratio of the area where the black board is not visible to the total area of the black board is less than 60%. 3 points: The ratio of the area where the black board is not visible to the total area of the black board is 60% or more and less than 70%. 2 points: The black board The ratio of the area where the black plate is not visible to the total area of the black plate is 70% or more and less than 80%. 1 point: The ratio of the area where the black plate is not visible to the total area of the black plate is 80% or more - Criteria for "bubbling"
◎: 3.5 points or more and 4.0 points or less ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

<<Rinsing speed>>
Ten expert evaluators took two pumps (approximately 6 g) of each of the liquid skin cleansing compositions of Examples 1 to 28 and Comparative Examples 1 to 10 into their palms, washed their entire bodies, and rinsed it off with warm water at 40°C. At the time, the time from the start of rinsing to the end of rinsing was measured with a stopwatch, and the "rinsing speed" 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 for determining the average score.
- Evaluation criteria for "rinsing speed" -
4 points: Rinsing takes less than 10 seconds 3 points: Rinsing takes more than 10 seconds and takes less than 12 seconds 2 points: Rinsing takes more than 12 seconds and less than 15 seconds 1 point: Rinsing takes more than 15 seconds - "Rinsing speed" Judgment criteria for “Sa”
◎: 3.5 points or more and 4.0 points or less ○: 3.0 points or more and less than 3.5 points △: 2.0 points or more and less than 3.0 points ×: Less than 2.0 points

(Prescription examples 1 to 6)
In the method for preparing each liquid skin cleansing composition of Examples 1 to 28 and Comparative Examples 1 to 10, component (A), component (B), component (C), component (D), component (E), and A method similar to the method for preparing each liquid skin cleansing composition of Examples 1 to 28 and Comparative Examples 1 to 10, except that the composition and content of the common ingredients were changed to the composition and content shown in Table 8 below. Thus, each liquid skin cleansing composition of Formulation Examples 1 to 6 was obtained.

Details of each component used in Examples 1 to 28, Comparative Examples 1 to 10, and Formulation Examples 1 to 6 are shown in Table 9 below.

*1: Potassium laurate, a comparative component of component (A), was prepared by neutralizing lauric acid (NAA-122, manufactured by NOF Corporation) with potassium hydroxide (liquid caustic potash, manufactured by Asahi Glass Co., Ltd.) It was used.
*2: The acrylamide/dimethyldiallylammonium chloride/acrylic acid copolymer (Marquat 3330PR, manufactured by Nippon Lubrizol Co., Ltd.), which is a comparative component of component (B), is a polymer having a structure represented by the following general formula (1). It is a molecular compound, and n in the following general formula (1) is 34, m is 31, and z is 35.
However, in the general formula (1), n, m, and z represent the molar ratio (mol%) of each structural unit, and n+m+z=100.

Claims (6)

(A) an amino acid surfactant;
(B) a cationic polymer containing 40 mol% or more of structural units derived from dimethyldiallylammonium chloride;
(C) a cationized polysaccharide;
(D) a dextrin of at least one of a hydroxyalkylated cyclodextrin and a highly branched cyclic dextrin;
A liquid skin cleansing composition comprising: The mass ratio [(D)/(A)] of the content of at least one of the hydroxyalkylated cyclodextrin and the highly branched cyclic dextrin (D) to the content of the amino acid surfactant (A) is 0. 005 to 0.15. The liquid skin cleansing composition according to claim 1 or 2, further comprising (E) at least one amphoteric surfactant selected from aminopropionic acid-based amphoteric surfactants and betaine-based amphoteric surfactants. The content of the component (A) is 1% by mass to 10% by mass, the content of the component (B) is 0.1% by mass to 0.8% by mass, and the content of the component (C) is 1% by mass to 10% by mass. is 0.1% by mass to 0.8% by mass, and the content of the component (D) is 0.05% by mass to 0.09% by mass, the liquid skin cleansing agent according to claim 1 or 2. Composition. The liquid skin cleansing composition according to claim 3, wherein the content of the component (E) is 3% by mass to 15% by mass. The liquid skin cleansing composition according to claim 1 or 2, which is filled in a foamer container.