Cleansing agent

Abstract

[Problem] To provide a cleansing agent that can produce bubbles excelling in density, persistence, adhesion, elastic behavior, and the like, said cleansing agent also being able to provide a good skin feeling and feeling of use during or after use. [Solution] This cleansing agent includes (a) a higher fatty acid or a salt thereof, (b) a polymer having a cationic group, (c) a polyacrylic acid thickener, and (d) water, and the mix ratio by mass b / c of the polymer (b) relative to the polyacrylic acid thickener (c) is 1-200.

Description

[Technical field]

[0001] The present invention relates to a cleansing agent suitable for face washing, and more particularly to a cleansing agent capable of generating dense foam having an excellent texture and exhibiting excellent cleaning power. [Background technology]

[0002] In the case of face washes, etc., detergents generally contain higher fatty acid soaps from the viewpoint of their cleaning power and foaming properties. In particular, in face washes, surfactants, fragrances, viscosity modifiers, moisturizers, and other additives have been considered for use in order to improve not only cleaning power but also usability and moisturizing properties.

[0003] In a cleanser, the foaming property depends largely on the type and amount of higher fatty acid soap, but higher fatty acid soap alone may not provide sufficient properties such as foam texture. That is, when the cleanser is foamed, the bubbles do not become small, and they tend to easily flow off even when in contact with the skin. In order to improve this point, the combination of a viscosity modifier has been considered, and in Patent Document 1, a solid cleanser composition is proposed in which a polyacrylic acid thickener is combined and a specific polymer is further combined to solve the problems caused by the polyacrylic acid thickener. However, in particular for cleansers intended for face washing, the feeling of use when in contact with the skin is important, and further improvements are required for conventional cleansing compositions. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent application 2007-308579 Summary of the Invention

[0005] In view of the above problems, the present invention provides a cleansing agent capable of generating foam that provides an excellent feeling when used.

[0006] According to the present invention, the following inventions are provided. [1] (a) a higher fatty acid or a salt thereof, (b) a polymer having a cationic group; (c) a polyacrylic acid-based thickener, and (d) water wherein the mass blending ratio b / c of ​​the polymer (b) to the polyacrylic acid-based thickener (c) is 1 to 200. [2] The cleansing agent according to [1], wherein the polymer (b) having a cationic group is a copolymer containing a diallyldialkyl quaternary ammonium salt as a polymerization unit. [3] The cleansing agent according to [1] or [2], wherein the polymer (b) having a cationic group is a copolymer containing a diallyldialkyl quaternary ammonium salt and an acrylamide as polymerization units. [4] The cleansing agent according to any one of [1] to [3], wherein the polymer (b) having a cationic group is a copolymer containing a diallyldialkyl quaternary ammonium salt, and acrylamide and acrylic acid as polymerization units. [5] The cleansing agent according to any one of [1] to [4], wherein the polyacrylic acid thickener (c) is a polymer that does not contain a cationic group in its main chain. [6] The cleansing agent according to any one of [1] to [5], wherein the polyacrylic acid thickener (c) is sodium polyacrylate. [7] The cleansing agent according to any one of [1] to [6], wherein the polyacrylic acid-based thickener (c) has a weight-average molecular weight of 4,000,000 to 6,000,000. [8] The cleansing agent according to any one of [1] to [7], wherein the blending amount of the higher fatty acid or salt thereof (a) is 10 to 50 mass % based on the total mass of the cleansing agent. [9] The cleansing agent according to any one of [1] to [8], wherein the blending amount of the polymer (b) having a cationic group is 0.1 to 2.0 mass % based on the total mass of the cleansing agent.

[10] The cleansing agent according to any one of [1] to [9], wherein the blending amount of the polyacrylic acid thickener (c) is 0.001 to 0.3 mass % based on the total mass of the cleansing agent.

[11] The cleansing agent according to any one of [1] to

[10] , wherein a mass blending ratio b / c of ​​the polymer having a cationic group (b) to the polyacrylic acid thickener (c) is 6 to 200.

[12] The cleansing agent according to any one of [1] to

[11] , further comprising an alkylene oxide derivative.

[13] The cleansing agent according to

[12] , wherein the alkylene oxide derivative is a compound represented by the following formula (1): R 1 O-[(AO) p (EO) q ]-R 2 (1) (In the formula, AO is an oxyalkylene group having 3 to 4 carbon atoms, EO is an oxyethylene group, p and q are the average numbers of moles of the oxyalkylene group having 3 to 4 carbon atoms and the oxyethylene group added, respectively, and are 1≦p≦70 and 1≦q≦70, and the ratio of the oxyethylene groups to the total of the oxyalkylene groups and the oxyethylene groups is 20 to 80 mass%, The oxyalkylene groups and oxyethylene groups may be added in a block or random manner. R 1 and R 2 are the same or different hydrocarbon groups having 1 to 4 carbon atoms or hydrogen atoms, R 1 and R 2 The ratio of the number of hydrogen atoms to the number of hydrocarbon groups is 0.15 or less.

[14] The cleansing agent according to

[13] , wherein in formula (1), the oxyalkylene groups AO and the oxyethylene groups EO are added randomly.

[15] The cleansing agent according to any one of

[12] to

[14] , wherein the amount of the alkylene oxide derivative is 0.001 to 5 mass % based on the total mass of the cleansing agent.

[16] The cleansing agent according to any one of [1] to

[15] , further comprising a nonionic surfactant.

[17] The cleansing agent according to any one of [1] to

[16] , wherein the blended amount of the nonionic surfactant is 0.1 to 15 mass % based on the total mass of the cleansing agent.

[18] The cleansing agent according to any one of [1] to

[17] , which is a viscous liquid.

[19] The cleansing agent according to any one of [1] to

[18] , which is a skin cleansing agent.

[20] The cleansing agent according to any one of [1] to

[19] , which is a skin moisturizing cleansing agent.

[0007] The cleansing agent of the present invention can generate foam that is excellent in density, longevity, adhesion, elasticity, etc., and further provides a good feel and sensation on the skin during and after use.

[0008] The cleansing agent according to the present invention comprises: (a) a higher fatty acid or a salt thereof, (b) a polymer having a cationic group; (c) a polyacrylic acid-based thickener, and (d) water It contains as an essential component.

[0009] [(a) Higher fatty acid or its salt] The higher fatty acid or its salt that can be used in the present invention is not particularly limited as long as it is a neutralized product of a higher fatty acid, or a saponified product of a higher fatty acid ester or oil that is generally used as a detergent material. What is generally called a higher fatty acid soap is a mixture of a higher fatty acid and its salt, and can be used as the higher fatty acid or its salt (a) in the present invention.

[0010] The higher fatty acid is preferably a fatty acid having 8 to 22 carbon atoms, and may be either linear or branched, and may be either saturated or unsaturated. Specifically, a fatty acid selected from the group consisting of lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, palmitoleic acid, oleic acid, isomyristic acid, isopalmitic acid, isostearic acid, undecylenic acid, tallic acid, linoleic acid, linoleic acid, eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA) can be used. Here, it is preferable to use one or a combination of two or more fatty acids selected from the group consisting of lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, palmitoleic acid, oleic acid, isomyristic acid, isopalmitic acid, and isostearic acid.

[0011] Examples of alkalis that form salts of higher fatty acids include inorganic alkalis such as potassium hydroxide and sodium hydroxide, organic alkalis such as triethanolamine, and basic amino acids such as lysine and arginine. Of these alkalis, potassium hydroxide is preferred.

[0012] As the salt of a higher fatty acid, it is preferable to use a higher fatty acid salt selected from the group consisting of potassium laurate, potassium myristate, potassium palmitate, and potassium stearate, and it is also preferable to contain all four of these higher fatty acid salts.

[0013] The salt of a higher fatty acid is produced, for example, by neutralizing a higher fatty acid with an alkali, but generally, it is not completely neutralized, and the product generally contains unreacted higher fatty acid. The higher fatty acid soap that can be used in the present invention also preferably has a neutralization rate of 60 to 90 mol%. Therefore, in the present invention, the higher fatty acid or its salt (a) preferably contains 60 to 90 mol% of a higher fatty acid alkali salt and 10 to 40 mol% of a higher fatty acid. In particular, the higher fatty acid or its salt (a) more preferably contains about 80% of a higher fatty acid alkali salt. The higher fatty acid or its salt (a) does not need to be a neutralized product of a higher fatty acid, and may be a mixture of a salt of a higher fatty acid and a higher fatty acid in the above ratio.

[0014] [(b) Polymer having a cationic group] The polymer having cationic groups that can be used in the cleaning agent according to the present invention is not particularly limited, but is preferably a hydrophilic polymer having amino groups or quaternary ammonium groups. Such polymers include hydrophilic polymers such as cellulose to which a substituent having amino groups or quaternary ammonium groups is added, and copolymers containing acrylamide or diallyldialkyl quaternary ammonium salt having cationic groups in the side chain as polymerization units. Among these, copolymers containing diallyldialkyl quaternary ammonium salt as polymerization units are preferred, copolymers containing diallyldialkyl quaternary ammonium salt and acrylamide as polymerization units are more preferred, and copolymers containing diallyldialkyl quaternary ammonium salt, acrylamide and acrylic acid as polymerization units are even more preferred.

[0015] Specifically, cationic cellulose, cationic starch, diallyl dialkyl quaternary ammonium salt / acrylamide copolymer, diallyl dialkyl quaternary ammonium salt / acrylamide / acrylic acid copolymer, etc. are mentioned, diallyl dialkyl quaternary ammonium salt / acrylamide copolymer, diallyl dialkyl quaternary ammonium salt / acrylamide / acrylic acid copolymer are preferred, and diallyl dialkyl quaternary ammonium salt / acrylamide / acrylic acid copolymer is more preferred. In the present invention, the polymer having a cationic group needs to have a cationic group, but the polymer itself does not need to be a cationic polymer. Rather, in the present invention, if an amphoteric polymer such as diallyl dialkyl quaternary ammonium salt / acrylamide / acrylic acid copolymer is used, it tends to be possible to obtain a better effect.

[0016] In addition, the cationic group-containing polymer in the present invention is preferably one having low spinnability. Such a cationic group-containing polymer is considered to have an effect of improving the water solubility, facilitating the diffusion of the cleansing agent into water when the cleansing agent comes into contact with water.

[0017] Commercially available cationic polymers which may be included in the cleaning agent of the present invention include, for example: Marcoat 100 (product name: manufactured by Nalco, cosmetic label name: Polyquaternium-6), Marcoat 550 (product name: manufactured by Nalco, cosmetic label name: Polyquaternium-7), Marcote 2200 (product name: Nalco, cosmetic label name: Polyquaternium-7), and Marcoat 3330 (product name: Nalco, cosmetic label name: Polyquaternium-39) etc.

[0018] [(c) Polyacrylic acid-based thickener] The polyacrylic acid thickener that can be used in the cleaning agent according to the present invention is a polymer that contains acrylic acid or an acrylic acid salt as the main polymerization unit. For this reason, the polyacrylic acid thickener used in the present invention is generally an anionic water-soluble polymer. Among such anionic water-soluble polymers, copolymers that contain polymerization units that contain cationic groups may not be able to obtain sufficient thickening effect, so it is preferable that they do not contain cationic groups. A typical example is sodium polyacrylate. By blending sodium polyacrylate in the cleaning agent, it is possible to impart a smooth feel.

[0019] Such polyacrylic acid-based thickeners are known with various molecular weights, but preferably have a weight-average molecular weight of, for example, 4,000,000 to 6,000,000. Since they are used as thickeners, it is preferable that their aqueous solutions have high viscosity, and for example, it is preferable that a 0.2% by mass aqueous solution has a viscosity of 400 to 600 mPa s at 30°C.

[0020] Various polyacrylic acid thickeners are commercially available, and any one can be selected without impairing the effects of the present invention. Specific examples include ARONVIS SX (trade name, manufactured by Toagosei Co., Ltd.), AQPEC (trade name, manufactured by Sumitomo Seika Chemicals Co., Ltd.), and VISCOMATE (trade name, manufactured by Showa Denko K.K.).

[0021] [(d)Water] The cleansing agent according to the present invention further contains water in addition to the above-mentioned components. As the water, water used in cosmetics, quasi-drugs, etc., such as purified water, ion-exchanged water, tap water, etc., can be used.

[0022] [Amount and ratio of each ingredient] The cleansing agent according to the present invention contains the above-mentioned components (a) to (d). The amount of each component is selected from the following ranges. The blending amount of (a) higher fatty acid or its salt is preferably 10 to 50 mass %, more preferably 20 to 40 mass %, based on the total mass of the cleanser. By blending the higher fatty acid or its salt within this range, the cleanser can be made into a viscous liquid with excellent handleability. (b) The blending amount of the polymer having a cationic group is 0.1 to 2.0 mass %, more preferably 0.15 to 1.5 mass %, based on the total mass of the cleanser. By setting the blending amount of the polymer having a cationic group within this range, an excellent cleanser with reduced tightness can be obtained. The blending amount of (c) polyacrylic acid-based thickener is preferably 0.001 to 0.3 mass %, more preferably 0.002 to 0.2 mass %, based on the total mass of the cleanser. By keeping the blending amount of the polyacrylic acid-based thickener within this range, a cleanser with an excellent balance of foaming and usability can be obtained. (d) Water is blended together with additives, which are added as necessary and will be described later, so that the total amount of water becomes 100 mass %.

[0023] The cleansing agent according to the present invention is obtained by blending the above-mentioned components, and in this case, the ratio of the blending amount of the polymer having a cationic group (b) to the blending amount of the polyacrylic acid thickener (c) is important. That is, the mass blending ratio b / c of ​​the polymer having a cationic group (b) to the polyacrylic acid thickener (c) must be 1 to 200, preferably 6 to 200, and more preferably 10 to 180. By setting the ratio b / c within this range, the diffusibility into water when the cleansing agent is contacted with water (water solubility performance), the fineness, persistence, adhesion to the skin, and elasticity of the foam when the cleansing agent is contacted with water to form a foam, the tactile feel when the foam is used to clean the skin, and the feeling of skin tension after cleaning can all be satisfied at a sufficient level. In particular, it is known that a creamy foam can be generated by using a polyacrylic acid thickener in a cleansing composition. However, in the present invention, even if the amount of polyacrylic acid-based thickener is less than that conventionally known, by setting the ratio b / c within an appropriate range, it is possible to form a thicker, shinier, and more spreadable foam than conventional foams. Such foam can provide the user with a smooth feel that was not possible with conventional cleansers.

[0024] [Other additives] The cleansing agent according to the present invention may contain various additives, if necessary, in addition to the above-mentioned components (a) to (d).

[0025] One such additive is an alkylene oxide derivative, which can improve the moisturizing feeling of the skin when the cleansing agent according to the present invention is used, and can also improve the durability of the foam during use.

[0026] The alkylene oxide derivative used in the cleansing agent according to the present invention is not particularly limited, but is preferably a compound represented by the following formula (1). R 1 O-[(AO) p (EO) q ]-R 2 (1) (In the formula, AO is an oxyalkylene group having 3 to 4 carbon atoms, EO is an oxyethylene group, p and q are the average added mole numbers of the oxyalkylene group having 3 to 4 carbon atoms and the oxyethylene group, respectively, and are 1≦p≦70 and 1≦q≦70, the ratio of the oxyethylene groups to the total of the oxyalkylene groups and the oxyethylene groups is 20 to 80 mass%, the oxyalkylene groups and the oxyethylene groups may be added in a block form or a random form, and R 1 and R 2 are the same or different hydrocarbon groups having 1 to 4 carbon atoms or hydrogen atoms, R 1 and R 2 The ratio of the number of hydrogen atoms to the number of hydrocarbon groups is 0.15 or less.

[0027] In the compound represented by the above formula (1), AO is an oxyalkylene group having 3 to 4 carbon atoms, such as an oxypropylene group, an oxybutylene group, an oxyisobutylene group, a trimethylene group, or a tetramethylene group, and preferably an oxypropylene group or an oxybutylene group. p is the average number of moles of the oxyalkylene group having 3 to 4 carbon atoms added, and is 1≦p≦70, preferably 2≦p≦20. q is the average number of moles of the oxyethylene group added, and is 1≦q≦70, preferably 2≦q≦20. In addition, (p+q) is preferably 8 to 100.

[0028] In the compound represented by the above formula (1), the ratio of oxyethylene groups to the total of oxyalkylene groups having 3 to 4 carbon atoms and oxyethylene groups is preferably 20 to 80% by mass. The order of addition of ethylene oxide and alkylene oxide having 3 to 4 carbon atoms is not particularly limited. The oxyethylene groups and oxyalkylene groups having 3 to 4 carbon atoms may be added in a block form or random form, but are preferably added in a random form. Here, the block form includes not only two-stage blocks but also three-stage blocks.

[0029] R 1 and R 2may be the same type, may be a mixture of a hydrocarbon group having 1 to 4 carbon atoms and a hydrogen atom, or may be a mixture of different hydrocarbon groups having 1 to 4 carbon atoms. 1 and R 2 In the hydrocarbon group, the ratio of the number of hydrocarbon groups to the number of hydrogen atoms (Y) is 0.15 or less, preferably 0.06 or less, that is, the ratio Y / X of the number of hydrocarbon groups (X) to the number of hydrogen atoms (Y) is 0.15 or less, preferably 0.06 or less. 1 and R 2 may be hydrogen, but the proportion of hydrogen is preferably small. 1 and R 2 It is preferable that all of the groups are hydrocarbon groups.

[0030] Specific examples of the alkylene oxide derivative include: Polyoxyethylene (10 mol) polyoxypropylene (10 mol) dimethyl ether, polyoxyethylene (9 mol) polyoxypropylene (2 mol) dimethyl ether, Polyoxyethylene (14 mol) polyoxypropylene (7 mol) dimethyl ether, Polyoxyethylene (6 mol) polyoxypropylene (14 mol) dimethyl ether, Polyoxyethylene (15 mol) polyoxypropylene (5 mol) dimethyl ether, Polyoxyethylene (25 mol) polyoxypropylene (25 mol) dimethyl ether, Polyoxyethylene (9 moles) polyoxybutylene (2 moles) dimethyl ether, Polyoxyethylene (14 mol) polyoxybutylene (7 mol) dimethyl ether, Polyoxyethylene (10 mol) polyoxypropylene (10 mol) diethyl ether, Polyoxyethylene (10 mol) polyoxypropylene (10 mol) dipropyl ether, Polyoxyethylene (10 moles) polyoxypropylene (10 moles) dibutyl ether, and Polyoxyethylene (36 mol) Polyoxypropylene (41 mol) Dimethyl ether Among these, polyoxyethylene (9 mol) polyoxypropylene (2 mol) dimethyl ether, polyoxyethylene (14 mol) polyoxypropylene (7 mol) dimethyl ether, or polyoxyethylene (36 mol) polyoxypropylene (41 mol) dimethyl ether is preferred, and polyoxyethylene (14 mol) polyoxypropylene (7 mol) dimethyl ether is particularly preferred.

[0031] The alkylene oxide derivatives used in the cleansing agent of the present invention can be produced by known methods, for example, by addition polymerization of ethylene oxide and an alkylene oxide having 3 to 4 carbon atoms to a compound having a hydroxyl group, followed by etherification with an alkyl halide in the presence of an alkali catalyst.

[0032] The amount of the alkylene oxide derivative that may be contained in the cleanser according to the present invention is not particularly limited, but is preferably 0.001 to 5 mass %, more preferably 0.01 to 3 mass %, and even more preferably 0.1 to 1 mass %, based on the total mass of the cleanser. By setting the amount of the alkylene oxide derivative within this range, the cleanser has gentle cleansing properties and also provides better makeup application and makeup retention after use.

[0033] The cleansing agent according to the present invention preferably contains a nonionic surfactant. Examples of nonionic surfactants that can be used include: Fatty acid alkanolamides such as coconut oil fatty acid monoethanolamide, coconut oil fatty acid diethanolamide, lauric acid isopropanolamide, and oleic acid diethanolamide; Sorbitan fatty acid esters such as sorbitan monostearate, and sorbitan sesquioleate; Alkylene glycol fatty acid esters such as diethylene glycol laurate, propylene glycol laurate, ethylene glycol monooleate, and ethylene glycol distearate; POE sorbitan fatty acid esters such as hydrogenated castor oil derivatives, glycerin alkyl ethers, POE sorbitan monooleate, and polyoxyethylene sorbitan monostearate; POE sorbitol fatty acid esters such as POE sorbitol monolaurate; POE glycerin fatty acid esters such as POE glycerin monoisostearate; POE glycerin fatty acid esters such as polyethylene glycol monooleate and POE distearate; POE alkyl ethers such as POE-octyldodecyl ether; POE alkyl phenyl ethers such as POE nonyl phenyl ether; POE·POP alkyl ethers; Pluronic types; POE castor oil; POE hydrogenated castor oil derivatives; Sugars such as sugar esters, sugar ethers, and sugar amides; Alkyl glycosides Among these, one or more kinds may be used in combination. In particular, alkylene glycol fatty acid esters are preferred, and diethylene glycol laurate is more preferred.

[0034] When the cleansing agent according to the present invention contains a nonionic surfactant, the blending amount thereof is preferably from 0.1 to 15 mass %, more preferably from 0.3 to 10 mass %, based on the total mass of the cleansing agent.

[0035] The cleansing agent according to the present invention may also contain a surfactant other than a nonionic surfactant, such as an anionic surfactant or an amphoteric surfactant.

[0036] The anionic surfactants that can be used in the cleansing agent according to the present invention are Polyoxyethylene alkyl sulfate type surfactants and alkyl glycol acetates; Higher alkyl sulfates (e.g., sodium lauryl sulfate, potassium lauryl sulfate, etc.); N-acyl sarcosinates (e.g., sodium lauroyl sarcosinate, etc.); Higher fatty acid amidosulfonates (e.g., sodium N-myristoyl-N-methyl taurate, sodium coconut oil fatty acid methyl taurate (sodium cocoyl methyl taurate), and sodium lauryl methyl taurate, etc.); Phosphate ester salts (such as sodium POE-oleyl ether phosphate, and POE-stearyl ether phosphate); Sulfosuccinates (e.g., sodium di-2-ethylhexyl sulfosuccinate, sodium monolauroyl monoethanolamide polyoxyethylene sulfosuccinate, and sodium lauryl polypropylene glycol sulfosuccinate); Alkylbenzene sulfonates (e.g., linear sodium dodecylbenzene sulfonate, linear triethanolamine dodecylbenzene sulfonate, and linear dodecylbenzene sulfonic acid, etc.); Higher fatty acid ester sulfates (e.g., sodium hydrogenated coconut oil fatty acid glycerin sulfate, etc.); N-acyl glutamates (e.g., monosodium N-lauroyl glutamate, disodium N-stearoyl glutamate, and monosodium N-myristoyl-L-glutamate, etc.); Sulfated oils (e.g., turmeric oil, etc.); POE-Alkyl ether carboxylic acids; POE-alkyl allyl ether carboxylates; α-Olefin sulfonates; Higher fatty acid ester sulfonates; Secondary alcohol sulfates; Higher fatty acid alkylolamide sulfate ester salts; Sodium lauroyl monoethanolamide succinate; and N-Palmitoyl aspartic acid ditriethanolamine; Sodium caseinate etc.

[0037] When the cleansing agent according to the present invention contains an anionic surfactant, the blending amount thereof is preferably 30% by mass or less, and more preferably 10 to 20% by mass, based on the total mass of the cleansing agent.

[0038] The amphoteric surfactant that can be used in the present invention is not particularly limited, and examples thereof include: Imidazoline amphoteric surfactants (e.g., 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, and 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy disodium salt, etc.); and Betaine surfactants (e.g., 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryl dimethylaminoacetic acid betaine, alkyl betaines, amido betaines, sulfo betaines, and cocamidopropyl betaine, etc.) and the like, preferably, a betaine-based surfactant is used, and more preferably, cocamidopropyl betaine is used.

[0039] When the cleansing agent according to the present invention contains an amphoteric surfactant, the amount of the amphoteric surfactant blended is particularly preferably 20 mass % or less, more preferably 3 to 18 mass %, and even more preferably 5 to 12 mass %, based on the total mass of the cleansing agent.

[0040] The cleansing agent of the present invention can contain, in addition to the above-mentioned ingredients, ingredients that are usually used in cosmetic and pharmaceutical cleansing agents, and is manufactured according to a conventional method. Such ingredients include the following, and the cleansing agent can be manufactured by further blending one or more of the following ingredients as long as the effects of the present invention are achieved.

[0041] Examples of moisturizing agents include polyethylene glycol, propylene glycol, glycerin, 1,3-butylene glycol, xylitol, sorbitol, maltitol, chondroitin sulfate, hyaluronic acid, mucoitin sulfate, caronic acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, bile salts, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO)PO adduct, Rosa rugosa extract, Achillea millefolium extract, and Melilot extract.

[0042] Examples of powder components include: Inorganic powders (e.g., talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, red mica, biotite, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstates, magnesium, silica, zeolites, barium sulfate, calcined calcium sulfate, calcium phosphate, fluorapatite, hydroxyapatite, ceramic powders, metal soaps (e.g., zinc myristate, calcium palmitate, and aluminum stearate), and boron nitride, etc.); Organic powders (e.g., polyamide resin powder (nylon powder), polyethylene powder, polymethyl methacrylate powder, polystyrene powder, styrene-acrylic acid copolymer resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, and cellulose powder, etc.); Inorganic white pigments (e.g., titanium dioxide, zinc oxide, etc.); Inorganic red pigments (e.g., iron oxide (red iron oxide), and iron titanate, etc.); Inorganic brown pigments (e.g., gamma-iron oxide, etc.); Inorganic yellow pigments (e.g., yellow iron oxide, yellow ochre, etc.); Inorganic black pigments (e.g., black iron oxide, and low-order titanium dioxide, etc.); Inorganic violet pigments (e.g., mango violet, cobalt violet, etc.); Inorganic green pigments (e.g., chromium oxide, chromium hydroxide, and cobalt titanate); Inorganic blue pigments (e.g. ultramarine, Prussian blue, etc.); Pearlescent pigments (e.g., titanium dioxide coated mica, titanium dioxide coated bismuth oxychloride, titanium dioxide coated talc, colored titanium dioxide coated mica, bismuth oxychloride, and fish scale foil, etc.); Metal powder pigments (such as aluminum powder, copper powder, etc.); Organic pigments such as zirconium, barium or aluminum lakes (e.g., organic pigments such as Red 201, Red 202, Red 204, Red 205, Red 220, Red 226, Red 228, Red 405, Orange 203, Orange 204, Yellow 205, Yellow 401, and Blue 404, Red 3, Red 104, Red 106, Red 227, Red 230, Red 401, Red 505, Orange 205, Yellow 4, Yellow 5, Yellow 202, Yellow 203, Green 3, and Blue 1, etc.); Natural pigments (e.g., chlorophyll, and beta-carotene) etc.

[0043] Examples of liquid oils and fats include avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, sasanqua oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, Chinese tung oil, Japanese tung oil, jojoba oil, germ oil, and triglycerin.

[0044] Examples of solid fats and oils include cacao butter, coconut oil, horse tallow, hardened coconut oil, palm oil, beef tallow, mutton tallow, hardened beef tallow, palm kernel oil, lard, beef bone fat, Japan Rice Kernel Oil, hardened oil, beef foot fat, Japan Rice, and hardened castor oil.

[0045] Examples of waxes include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, ivory wax, whale wax, montan wax, bran wax, lanolin, kapok wax, lanolin acetate, liquid lanolin, sugarcane wax, lanolin fatty acid isopropyl, hexyl laurate, reduced lanolin, jojoba wax, hard lanolin, shellac wax, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, and POE hydrogenated lanolin alcohol ether.

[0046] Examples of the hydrocarbon oil include liquid paraffin, ozokerite, squalane, pristane, paraffin, ceresin, squalene, petrolatum, and microcrystalline wax.

[0047] Examples of higher alcohols include: Straight chain alcohols (e.g., lauryl alcohol, cetyl alcohol, stearyl alcohol, behenyl alcohol, myristyl alcohol, oleyl alcohol, and cetostearyl alcohol); and Branched chain alcohols (such as monostearyl glycerin ether (batyl alcohol), 2-decyltetradecyl alcohol, lanolin alcohol, cholesterol, phytosterols, hexyldodecanol, isostearyl alcohol, and octyldodecanol) etc.

[0048] Synthetic ester oils include isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12-hydroxystearate, ethylene glycol di-2-ethylhexanoate, dipentaerythritol fatty acid ester, N-alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glycerin di-2-heptylundecanoate, trimethylolpropane tri-2-ethylhexanoate, trimethylolpropane triisostearate, pentaerythritol tetra-2-ethylhexanoate, Glyceryl tri-2-ethylhexanoate, glyceryl trioctanoate, glyceryl triisopalmitate, trimethylolpropane triisostearate, cetyl 2-ethylhexanoate, 2-ethylhexyl palmitate, glyceryl trimyristate, tri-2-heptylundecanoate glyceride, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride, 2-heptylun palmitate decyl, diisobutyl adipate, N-lauroyl-L-glutamic acid-2-octyldodecyl ester, di-2-heptylundecyl adipate, ethyl laurate, di-2-ethylhexyl sebacate, 2-hexyldecyl myristate, 2-hexyldecyl palmitate, 2-hexyldecyl adipate, diisopropyl sebacate, 2-ethylhexyl succinate, and triethyl citrate.

[0049] Examples of silicone oils include: Chain polysiloxanes (e.g., dimethylpolysiloxane, methylphenylpolysiloxane, diphenylpolysiloxane, etc.); Cyclic polysiloxanes (e.g., octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, etc.); Silicone resin forming a three-dimensional network structure; Silicone rubber: and Various modified polysiloxanes (amino-modified polysiloxanes, polyether-modified polysiloxanes, alkyl-modified polysiloxanes, and fluorine-modified polysiloxanes, etc.) etc.

[0050] Examples of natural water-soluble polymers include: Plant-based polymers (e.g., gum arabic, gum tragacanth, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), algae colloids (cassow extract), starch (rice, corn, potato, wheat), and glycyrrhizic acid); Microbial polymers (e.g., xanthan gum, dextran, succinoglucan, and pullulan); Animal-based polymers (e.g., collagen, casein, albumin, and gelatin) etc.

[0051] Examples of semi-synthetic water-soluble polymers include: Starch-based polymers (e.g., carboxymethyl starch, and methylhydroxypropyl starch, etc.); Cellulosic polymers (such as methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, hydroxypropylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, crystalline cellulose, and cellulose powder); and Examples of the alginic acid polymers include sodium alginate and propylene glycol alginate.

[0052] Examples of synthetic water-soluble polymers include: Vinyl polymers (e.g., polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, and carboxyvinyl polymers); Polyoxyethylene polymers (e.g., polyoxyethylene polyoxypropylene copolymers of polyethylene glycol 20,000, 40,000, and 60,000); acrylic polymers (e.g., sodium polyacrylate, polyethyl acrylate, and polyacrylamide); Polyethylenimine; and Cationic polymers and the like.

[0053] Examples of thickeners other than component (c) include gum arabic, carrageenan, karaya gum, tragacanth gum, carob gum, quince seed, casein, dextrin, gelatin, sodium pectinate, sodium alginate, methylcellulose, ethylcellulose, CMC, hydroxyethylcellulose, hydroxypropylcellulose, PVA, PVM, PVP, carboxyvinyl polymer, locust bean gum, guar gum, tamarind gum, dialkyldimethylammonium cellulose sulfate, xanthan gum, magnesium aluminum silicate, bentonite, hectorite, Al magnesium silicate (veegum), laponite, and anhydrous silicic acid.

[0054] Examples of ultraviolet absorbents include: Benzoic acid-based ultraviolet absorbers (e.g., para-aminobenzoic acid (hereinafter abbreviated as PABA), PABA monoglycerin ester, N,N-dipropoxy PABA ethyl ester, N,N-diethoxy PABA ethyl ester, N,N-dimethyl PABA ethyl ester, N,N-dimethyl PABA butyl ester, and N,N-dimethyl PABA ethyl ester); Anthranilic acid-based ultraviolet absorbers (e.g., homomenthyl-N-acetylanthranilate, etc.); Salicylic acid-based ultraviolet absorbers (e.g., amyl salicylate, menthyl salicylate, homomenthyl salicylate, octyl salicylate, phenyl salicylate, benzyl salicylate, and p-isopropanol phenyl salicylate); cinnamic acid-based ultraviolet absorbers (e.g., octyl cinnamate, ethyl 4-isopropyl cinnamate, methyl 2,5-diisopropyl cinnamate, ethyl 2,4-diisopropyl cinnamate, methyl 2,4-diisopropyl cinnamate, propyl p-methoxy cinnamate, isopropyl p-methoxy cinnamate, isoamyl p-methoxy cinnamate, octyl p-methoxy cinnamate (2-ethylhexyl p-methoxy cinnamate), 2-ethoxyethyl p-methoxy cinnamate, cyclohexyl p-methoxy cinnamate, ethyl α-cyano β-phenyl cinnamate, 2-ethylhexyl α-cyano β-phenyl cinnamate, and glyceryl mono-2-ethylhexanoyl di-para-methoxy cinnamate, etc.); Benzophenone-based ultraviolet absorbers (e.g., 2,4-dihydroxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4'-dimethoxybenzophenone, 2,2',4,4'-tetrahydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonate, 4-phenylbenzophenone, 2-ethylhexyl-4'-phenyl-benzophenone-2-carboxylate, 2-hydroxy-4-n-octoxybenzophenone, and 4-hydroxy-3-carboxybenzophenone, etc.); 3-(4'-methylbenzylidene)-d,l-camphor, 3-benzylidene-d,l-camphor; 2-Phenyl-5-methylbenzoxazole; 2,2'-Hydroxy-5-methylphenylbenzotriazole; 2-(2'-hydroxy-5'-t-octylphenyl)benzotriazole; 2-(2'-hydroxy-5'-methylphenylbenzotriazole; Dibenzalazine; Dianisoylmethane; and 4-Methoxy-4'-t-butyldibenzoylmethane;5-(3,3-dimethyl-2-norbornylidene)-3-pentan-2-one etc.

[0055] Examples of sequestering agents include 1-hydroxyethane-1,1-diphosphonic acid, 1-hydroxyethane-1,1-diphosphonic acid tetrasodium salt, disodium edetate, trisodium edetate, tetrasodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, trisodium ethylenediaminehydroxyethyltriacetate, and disodium ethylenediaminetetraacetate.

[0056] Examples of lower alcohols include ethanol, propanol, isopropanol, isobutyl alcohol, and t-butyl alcohol.

[0057] Examples of polyhydric alcohols include dihydric alcohols (e.g., ethylene glycol, propylene glycol, trimethylene glycol, 1,2-butylene glycol, 1,3-butylene glycol, tetramethylene glycol, 2,3-butylene glycol, pentamethylene glycol, 2-butene-1,4-diol, hexylene glycol, and octylene glycol, etc.); Trihydric alcohols (e.g., glycerin, trimethylolpropane, etc.); Tetrahydric alcohols (e.g., pentaerythritol, 1,2,6-hexanetriol, etc.); Pentahydric alcohols (e.g., xylitol, etc.); Hexahydric alcohols (e.g., sorbitol, mannitol, etc.); Polyhydric alcohol polymers (e.g., diethylene glycol, dipropylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, diglycerin, polyethylene glycol, triglycerin, tetraglycerin, polyglycerin, and the like); dihydric alcohol alkyl ethers (e.g., ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono 2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycol benzyl ether, ethylene glycol isopropyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether, and ethylene glycol dibutyl ether, etc.); dihydric alcohol alkyl ethers (e.g., diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol butyl ether, diethylene glycol methyl ethyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol isopropyl ether, dipropylene glycol methyl ether, dipropylene glycol ethyl ether, and dipropylene glycol butyl ether); dihydric alcohol ether esters (e.g., ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol diadipate, ethylene glycol disuccinate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, and propylene glycol monophenyl ether acetate, etc.); Glycerol monoalkyl ethers (e.g., xyl alcohol, selachyl alcohol, and batyl alcohol); Sugar alcohols (e.g., sorbitol, maltitol, maltotriose, mannitol, sucrose, erythritol, glucose, fructose, starch hydrolysates, maltose, xylitol, and starch hydrolysates reducing alcohols, etc.); Glysolid;Tetrahydrofurfuryl alcohol; POE-Tetrahydrofurfuryl alcohol; POP-Butyl ether;POP·POE-Butyl ether; Tripolyoxypropylene glycerin ether; POP-glycerol ether;POP-glycerol ether phosphate; POP·POE-Pentane erythritol ether, and Polyglycerin etc.

[0058] Examples of monosaccharides include: Tricarbon sugars (e.g., D-glyceryl aldehyde, and dihydroxyacetone); Four-carbon sugars (e.g., D-erythrose, D-erythrulose, D-threose, and erythritol); pentoses (e.g., L-arabinose, D-xylose, L-lyxose, D-arabinose, D-ribose, D-ribulose, D-xylulose, and L-xylulose); Hexose sugars (e.g., D-glucose, D-talose, D-busicose, D-galactose, D-fructose, L-galactose, L-mannose, and D-tagatose, etc.); Seven-carbon sugars (e.g., aldoheptose, heptose, etc.); Octose sugars (e.g., octulose, etc.); deoxy sugars (e.g., 2-deoxy-D-ribose, 6-deoxy-L-galactose, and 6-deoxy-L-mannose, etc.); Amino sugars (e.g., D-glucosamine, D-galactosamine, sialic acid, aminouronic acid, muramic acid, etc.); and Uronic acids (e.g., D-glucuronic acid, D-mannuronic acid, L-guluronic acid, D-galacturonic acid, and L-iduronic acid, etc.) etc.

[0059] Examples of oligosaccharides include sucrose, gunthianose, umbelliferose, lactose, planteose, isolichinoses, α,α-trehalose, raffinose, lychinoses, umbilicin, and stachyose verbascoses.

[0060] Examples of polysaccharides include cellulose, quince seed, chondroitin sulfate, starch, galactan, dermatan sulfate, glycogen, gum arabic, heparan sulfate, hyaluronic acid, tragacanth gum, keratan sulfate, chondroitin, xanthan gum, mucoitin sulfate, guar gum, dextran, keratosulfate, locust bean gum, succinoglucan, and caronic acid.

[0061] Examples of amino acids include: Examples of the amino acid include neutral amino acids (e.g., threonine, cysteine, etc.), basic amino acids (e.g., hydroxylysine, etc.), etc. Examples of the amino acid derivatives include sodium acyl sarcosine (sodium lauroyl sarcosine), acyl glutamate, sodium acyl β-alanine, glutathione, and pyrrolidone carboxylic acid, etc.

[0062] Examples of the organic amine include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, and 2-amino-2-methyl-1-propanol.

[0063] Examples of polymer emulsions include acrylic resin emulsions, polyethyl acrylate emulsions, acrylic resin liquids, polyacrylic alkyl ester emulsions, polyvinyl acetate resin emulsions, and natural rubber latex.

[0064] Examples of pH adjusters include buffers such as lactic acid-sodium lactate, citric acid-sodium citrate, and succinic acid-sodium succinate. Examples of vitamins include vitamin A, B1, B2, B6, C, E and derivatives thereof, pantothenic acid and derivatives thereof, and biotin.

[0065] Examples of antioxidants include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters, sulfites, and hydrogen sulfites. Examples of antioxidant assistants include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, and ethylenediaminetetraacetic acid.

[0066] Other possible ingredients include: preservatives (such as ethylparaben and butylparaben); Anti-inflammatory agents (e.g., glycyrrhizinic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, and allantoin); Skin lightening agents (e.g., placenta extract, saxifrage extract, and arbutin); various extracts (e.g., Phellodendron bark, Coptis japonica, Lithospermum root, Peony root, Swertia japonica, Birch, Sage, Loquat, Carrot, Aloe, Mallow, Iris, Grape, Coix seed, Loofah, Lily, Saffron, Cnidium rhizome, Angelica acutiloba, Hypericum perforatum, Ononis, Garlic, Capsicum annuum, Tangerine peel, Angelica acutiloba, Seaweed, etc.); Enhancers (e.g., royal jelly, photosensitizers, cholesterol derivatives, etc.); Circulation enhancers (e.g., nonylic acid valenylamide, nicotinic acid benzyl ester, nicotinic acid β-butoxyethyl ester, capsaicin, zingerone, cantharides tincture, ichthammol, tannic acid, α-borneol, tocopherol nicotinate, inositol hexanicotinate, cyclandelate, cinnarizine, tolazoline, acetylcholine, verapamil, cepharanthine, and γ-oryzanol, etc.); Antiseborrheic agents (e.g., sulfur, thianthol, etc.); and Anti-inflammatory agents (eg, tranexamic acid, thiotaurine, hypotaurine, etc.) and the like.

[0067] According to a preferred embodiment of the cleansing agent of the present invention, the cleansing agent is a viscous liquid. The viscous liquid means a liquid to semi-solid cleansing agent having flowability, and the viscosity (B-type viscometer, 30° C.) is preferably 1,000 mPa s or more.

[0068] The cleansing agent according to the present invention is preferably a skin cleansing agent, and is particularly suitable for use in cleaning the skin after going out and applying makeup. It is preferable that the formulation be in the form of a lotion, gel, or cream, and more preferably in the form of a cream.

[0069] According to a preferred embodiment of the cleansing agent of the present invention, the cleansing agent is a makeup remover. Makeup includes lipstick, foundation, and sunscreen, as well as sunscreen.

[0070] According to a preferred embodiment of the cleansing agent of the present invention, it is a sebum cleansing agent. Sebum is derived from sebaceous glands or stratum corneum cells and protects the skin, but if sebum is left on the skin for a long time, it may be oxidized by ultraviolet rays or the like and have a detrimental effect on the skin. Therefore, it is preferable to remove such sebum stains with the cleansing agent of the present invention.

[0071] A preferred embodiment of the cleansing agent according to the present invention is a skin moisturizing cleansing agent that can remove and cleanse sebum and other contaminants while preventing evaporation of moisture from the stratum corneum of the skin.

[0072] The cleansing agent according to the present invention may be in any form, including a solution system, a solubilized system, an emulsion system, a powder dispersion system, a water-oil two-layer system, or a water-oil-powder three-layer system. EXAMPLES

[0073] The present invention will be described in detail with reference to the following examples, but the present invention is not limited to these examples. The blend amounts are shown in mass % unless otherwise specified.

[0074] [Examples 1 to 7 and Comparative Examples 1 to 3] According to the formulations shown in Table 1, the cleansing agents of Examples 1 to 7 and Comparative Examples 1 to 3 were prepared.

[0075] Furthermore, the performance of these cleansing agents was evaluated according to the following criteria. [Feeling of tension] Ten expert panelists washed their faces with each sample and evaluated the feel after washing. A: My skin doesn't feel tight at all after washing my face. B: Almost no tightness on the skin after washing C: My skin feels tight after washing my face

[0076] [Fineness of bubbles] After mixing the sample with water and foaming it, the average size of the bubbles was evaluated under a microscope. S: The bubble diameter is very small. A: The bubble diameter is small. B: The bubble diameter is slightly larger. C: Large bubble diameter

[0077] [Foam durability] The samples were mixed with water and foamed, and then observed under a microscope immediately and 5 minutes later to evaluate the change in average bubble size. A: Almost no change in bubble diameter is observed B: The change in bubble diameter becomes slightly larger. C: The bubbles have merged to increase in diameter.

[0078] [Adhesion of foam] Ten expert panelists mixed each sample with water to create a lather, then placed the lather on their skin and held the skin surface vertically to evaluate the adhesion. A: The foam adheres firmly to the skin and barely slides over the skin surface. B: The foam adheres to the skin but slowly slides down the surface vertically. C: The foam slides vertically down the skin surface due to gravity.

[0079] [Foam elasticity] A panel of 10 experts mixed each sample with water, created a lather, and evaluated the elasticity of the resulting lather when pressed with a finger. A: The foam is elastic. B: The foam is slightly elastic. C: The foam has almost no elasticity.

[0080] [Table 1] *1: Aronvis SX (manufactured by Toagosei Co., Ltd.)

[0081] From the results obtained, the cleansing agent containing each of the essential components of the present invention exhibits excellent properties. On the other hand, it is found that sufficient performance cannot be obtained if either the polymer having a cationic group or the polyacrylic acid-based thickener is missing (Comparative Examples 1 and 2). In particular, when the ratio b / c of ​​the polymer having a cationic group to the polyacrylic acid-based thickener is 6 or more, the fineness of the foam tends to be further improved. On the other hand, it is also found that even if the ratio of the polymer having a cationic group to the thickener is within the range of 1 to 200, sufficient performance cannot be obtained if the thickener is not a polyacrylic acid-based thickener (Comparative Example 3).

Claims

1. (a) a higher fatty acid or a salt thereof, (b) a polymer having a cationic group; (c) a polyacrylic acid-based thickener, and (d) Water wherein the mass blending ratio b / c of ​​the polymer (b) to the polyacrylic acid-based thickener (c) is 6 to 200.

2. 2. The cleansing agent according to claim 1, wherein the polymer (b) having a cationic group is a copolymer containing a diallyldialkyl quaternary ammonium salt as a polymerized unit.

3. 3. The cleansing agent according to claim 1, wherein the polymer (b) having a cationic group is a copolymer containing a diallyldialkyl quaternary ammonium salt and an acrylamide as polymerized units.

4. 4. The cleansing agent according to claim 1, wherein the polymer (b) having a cationic group is a copolymer containing a diallyldialkyl quaternary ammonium salt, and acrylamide and acrylic acid as polymerized units.

5. 5. The cleansing agent according to claim 1, wherein the polyacrylic acid thickener (c) is a polymer that does not contain a cationic group in its main chain.

6. 6. The cleansing agent according to claim 1, wherein the polyacrylic acid-based thickener (c) is sodium polyacrylate.

7. The cleansing agent according to any one of claims 1 to 6, wherein the polyacrylic acid-based thickener (c) has a weight average molecular weight of 4,000,000 to 6,000,000.

8. The cleansing agent according to any one of claims 1 to 7, wherein the blending amount of the higher fatty acid or salt thereof (a) is 10 to 50 mass % based on the total mass of the cleansing agent.

9. The cleansing agent according to any one of claims 1 to 8, wherein the blending amount of the polymer (b) having a cationic group is 0.1 to 2.0 mass % based on the total mass of the cleansing agent.

10. The cleansing agent according to any one of claims 1 to 9, wherein the blending amount of the polyacrylic acid-based thickener (c) is 0.001 to 0.3 mass % based on the total mass of the cleansing agent.

11. The cleansing agent according to any one of claims 1 to 10, further comprising an alkylene oxide derivative.

12. The cleansing agent according to claim 11, wherein the alkylene oxide derivative is a compound represented by the following formula (1): 2 １ O[(AO) ｐ (59) ｑ )-2 ２ (1) (In the formula, AO is an oxyalkylene group having 3 to 4 carbon atoms, EO is an oxyethylene group, p and q are the average numbers of moles of the oxyalkylene group having 3 to 4 carbon atoms and the oxyethylene group added, respectively, and 1≦p≦70 and 1≦q≦70, and the ratio of the oxyethylene groups to the total of the oxyalkylene groups and the oxyethylene groups is 20 to 80 mass %, The oxyalkylene groups and oxyethylene groups may be added in a block or random manner. R １ and R ２ are the same or different hydrocarbon groups having 1 to 4 carbon atoms or hydrogen atoms, R １ and R ２ The ratio of the number of hydrogen atoms to the number of hydrocarbon groups is 0.15 or less.

13. 13. The cleansing agent according to claim 12, wherein in formula (1), the oxyalkylene groups AO and the oxyethylene groups EO are added randomly.

14. The cleansing agent according to any one of claims 11 to 13, wherein the blending amount of the alkylene oxide derivative is 0.001 to 5 mass % based on the total mass of the cleansing agent.

15. The cleansing agent according to any one of claims 1 to 14, further comprising a nonionic surfactant.

16. 16. The cleansing agent according to claim 1, wherein the blending amount of the nonionic surfactant is 0.1 to 15% by mass, based on the total mass of the cleansing agent.

17. The cleansing agent according to any one of claims 1 to 16, which is a viscous liquid.

18. The cleansing agent according to any one of claims 1 to 17, which is a skin cleansing agent.

19. The cleansing agent according to any one of claims 1 to 18, which is a skin moisturizing cleansing agent.

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