Cleansing agent

Abstract

[Problem] To provide a cleansing agent that can produce foam excelling in foam quality, persistence, adhesion, etc., said cleansing agent also being capable of providing an excellent skin feeling and feeling of use during or after use. [Solution] A cleansing agent comprising (a) a higher fatty acid or a salt thereof, (b) an isomerized sugar, (c) a polymer having a cationic group, and (d) water.

Description

[Technical Field]

[0001] The present invention relates to a cleanser suitable for face washing. More specifically, the present invention relates to a cleanser that not only exhibits sufficient cleansing power but also generates dense foam with excellent texture and provides an excellent feeling when used. [Background technology]

[0002] Cleansers used for washing the face, etc., generally contain higher fatty acid soaps from the viewpoint of cleansing power and foaming properties. In particular, for face cleansers, in order to improve not only cleansing power but also the feel during use and moisturizing properties, the combination of surfactants, fragrances, viscosity modifiers, moisturizers and other additives has been investigated.

[0003] In cleansers, foaming ability is largely dependent on the type and amount of higher fatty acid soap, but higher fatty acid soap alone may not provide sufficient foam texture and post-cleaning feel. In other words, in facial cleansers, using higher fatty acid soap alone makes it difficult to increase the foam density when lathering the cleanser, and it is difficult to achieve a satisfactory post-cleaning feel. For this reason, the combination of viscosity modifiers to adjust the foam texture and various additives to improve the feel are being considered.

[0004] For example, a solid detergent composition has been proposed that combines a higher fatty acid soap with a polyacrylic acid-based thickener and a specific polymer (Patent Document 1). The combination of a body soap with a sugar has also been considered. However, particularly for detergents intended for facial cleansing, the feeling after use is important, and further improvements to conventional detergent compositions are desired. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent application 2007-308579 Summary of the Invention

[0006] In view of the above problems, the present invention provides a cleanser that can generate foam that provides an excellent feeling when used.

[0007] According to the present invention, the following inventions are provided. [1] (a) a higher fatty acid or a salt thereof, (b) isomerized sugar, (c) a polymer having cationic groups, and (d) water Contains cleaning agents. [2] The cleanser according to [1], wherein the salt of the higher fatty acid is a potassium salt or a sodium salt of the higher fatty acid. [3] The cleanser according to [1] or [2], wherein the neutralization rate of the salt of the higher fatty acid is 80 to 120%. [4] The cleansing agent according to any one of [1] to [3], wherein the isomerized sugar (b) is an isomerized product of glucose, fructose, or lactose, or a mixture thereof. [5] The cleansing agent according to any one of [1] to [4], wherein the amount of the isomerized sugar (b) blended is preferably 0.01 to 5 mass % based on the total mass of the cleansing agent. [6] The cleanser according to any one of [1] to [5], wherein the polymer (c) having a cationic group is a copolymer containing a diallyldialkyl quaternary ammonium salt in its polymerization units. [7] The cleanser according to any one of [1] to [6], wherein the polymer (c) having a cationic group is a copolymer containing a diallyldialkyl quaternary ammonium salt and an acrylamide as polymerization units. [8] The cleanser according to any one of [1] to [7], wherein the polymer (c) having a cationic group is a copolymer containing a diallyldialkyl quaternary ammonium salt, and acrylamide and acrylic acid as polymerization units. [9] The cleanser according to any one of [1] to [8], further comprising (e) a polyacrylic acid-based thickener.

[10] The cleanser according to [9], wherein the polyacrylic acid thickener (e) is a polymer that does not contain a cationic group in the main chain.

[11] The cleanser according to [9] or

[10] , wherein the polyacrylic acid-based thickener (e) is sodium polyacrylate.

[12] The cleansing agent according to any one of [8] to

[10] , wherein the weight-average molecular weight of the polyacrylic acid thickener (e) is 4,000,000 to 6,000,000.

[13] The cleanser according to any one of [1] to

[12] , 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 cleanser.

[14] The cleanser according to any one of [1] to

[13] , wherein the blending amount of the polymer (c) having a cationic group is 0.1 to 2.0 mass % based on the total mass of the cleanser.

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

[14] , further comprising an alkylene oxide derivative.

[16] The cleansing agent according to

[15] , 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 oxyalkylene groups and oxyethylene groups added, respectively, and are 1≦p≦70 and 1≦q≦70, and the ratio of oxyethylene groups to the total of oxyalkylene groups and 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, and R 1 and R 2 The ratio of the number of hydrogen atoms to the number of hydrocarbon groups is 0.15 or less.

[17] The cleanser according to

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

[18] The cleanser according to any one of

[15] to

[17] , wherein the amount of the alkylene oxide derivative blended is 0.001 to 5 mass % based on the total mass of the cleanser.

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

[18] , further comprising a nonionic surfactant.

[20] The cleanser according to any one of [1] to

[19] , wherein the blending amount of the nonionic surfactant is 0.1 to 15 mass % based on the total mass of the cleanser.

[21] The cleanser according to any one of [1] to

[20] , which is a viscous liquid.

[22] The cleanser according to any one of [1] to

[21] , which is a skin cleanser.

[23] The cleanser according to any one of [1] to

[22] , which is a skin moisturizing cleanser.

[0008] The cleanser of the present invention can generate foam that is excellent in quality, durability, and adhesion, and further provides a good feel and sensation on the skin during and after use.

[0009] The cleanser according to the present invention comprises: (a) a higher fatty acid or a salt thereof, (b) isomerized sugar, (c) a polymer having cationic groups, and (d) water It contains as an essential component.

[0010] [(a) higher fatty acid or salt thereof] 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 fat that is commonly 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 also be used as the higher fatty acid or its salt (a) in the present invention.

[0011] The higher fatty acid is preferably a fatty acid having 8 to 22 carbon atoms, and may be either linear or branched, saturated or unsaturated. Specifically, 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, isostearic acid, undecylenic acid, tall acid, linoleic acid, linolenic 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.

[0012] Examples of alkalis that can 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.

[0013] 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 types of higher fatty acid salts.

[0014] Salts of higher fatty acids are produced, for example, by neutralizing higher fatty acids with alkali, but generally, they are not completely neutralized, and the product generally contains unreacted higher fatty acids. 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, it is more preferable that the higher fatty acid or its salt (a) contains about 80% of a higher fatty acid alkali salt. The higher fatty acid or its salt (a) does not necessarily have to be a neutralized product of a higher fatty acid, and may be a mixture of a higher fatty acid salt and a higher fatty acid in the above-mentioned ratio.

[0015] [(b) Isomerized sugar] In the narrow sense, isomerized sugar refers to glucose modified to fructose using alkali or the like, but in the present invention, it refers to sugars obtained by isomerizing sugars such as glucose, lactose, or fructose using enzymes or alkali, and mixtures thereof are also collectively referred to as "isomerized sugar" in the present invention. Sugars may be industrially synthesized or may be separated and purified from grains. Isomerized sugar can be obtained by isomerizing these single sugars using enzymes or alkali. Furthermore, the obtained single sugar isomers can be mixed and used as needed.

[0016] Furthermore, a mixture of isomerized sugars can be obtained directly from a mixture of sugars. For example, a mixture of sugars obtained from grains or the like can be isomerized with an enzyme or alkali to obtain an isomerized sugar mixture.

[0017] In the present invention, the isomerized sugar is preferably an isomerized product of glucose, lactose, or fructose, or a mixture thereof. Furthermore, while fructose is purified by subjecting glucose to an isomerization reaction, a portion of the glucose remains unreacted. Therefore, a typical isomerized sugar is a mixture of glucose and fructose. Furthermore, either an enzyme or an alkali is used in the isomerization reaction. As the alkali, a dilute aqueous alkali solution, such as a dilute aqueous solution of sodium hydroxide or potassium hydroxide, is generally used. As the enzyme, amylase or the like is generally used. While the mixing ratio of these sugars is not particularly limited, a high glucose content is preferred. Specifically, the glucose content is preferably 45 to 55% by mass based on the total mass of the isomerized sugar. Various types of such isomerized sugar are commercially available, such as Pentavitin (trade name, manufactured by DSM).

[0018] [(c) Polymer having a cationic group] The polymer having a cationic group that can be used in the cleanser according to the present invention is not particularly limited, but is preferably a hydrophilic polymer having an amino group or a quaternary ammonium group. Such polymers include hydrophilic polymers such as cellulose to which a substituent having an amino group or a quaternary ammonium group has been added, and copolymers containing, as polymerization units, acrylamide or diallyldialkyl quaternary ammonium salt having a cationic group in the side chain. 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 and acrylamide and acrylic acid as polymerization units are even more preferred.

[0019] Specifically, examples include cationized cellulose, cationized starch, diallyldialkyl quaternary ammonium salt / acrylamide copolymer, and diallyldialkyl quaternary ammonium salt / acrylamide / acrylic acid copolymer, with diallyldialkyl quaternary ammonium salt / acrylamide copolymer and diallyldialkyl quaternary ammonium salt / acrylamide / acrylic acid copolymer being preferred, and diallyldialkyl quaternary ammonium salt / acrylamide / acrylic acid copolymer being more preferred. In the present invention, the polymer having a cationic group must have a cationic group, but the polymer itself does not need to be a cationic polymer. Rather, in the present invention, the use of an amphoteric polymer such as diallyldialkyl quaternary ammonium salt / acrylamide / acrylic acid copolymer tends to produce better effects.

[0020] The cationic group-containing polymer of the present invention preferably has low spinnability, which is believed to have the effect of improving the water solubility of the cleanser, facilitating its diffusion into water upon contact with the water.

[0021] Commercially available cationic polymers that may be included in the cleansing agent of the present invention include, for example: Marcote 100 (product name: manufactured by Nalco, cosmetic label name: Polyquaternium-6), Marcote 550 (product name: manufactured by Nalco, cosmetic label name: Polyquaternium-7), Marcote 2200 (trade name: manufactured by Nalco, cosmetic labeling name: Polyquaternium-7), and Marcote 3330 (product name: Nalco, cosmetic label name: Polyquaternium-39) etc.

[0022] [(d)Water] The cleanser 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.

[0023] [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 that is easy to handle. (b) The amount of isomerized sugar is preferably 0.01 to 5% by mass, more preferably 0.1 to 3% by mass, based on the total mass of the cleanser. By keeping the amount of isomerized sugar within this range, the feeling after use of the cleanser can be further improved. However, if the amount of isomerized sugar is too high, the scent tends to deteriorate, so care must be taken. (c) 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 blending the polymer having a cationic group in this range, an excellent cleanser with reduced tightness can be obtained. (d) Water is blended together with additives, which are added as needed, as described below, so that the total amount becomes 100% by mass.

[0024] [Other additives] The cleansing agent according to the present invention may contain various additives as required in addition to the above components (a) to (d).

[0025] The cleanser according to the present invention may contain (e) a polyacrylic acid thickener. The polyacrylic acid thickener that can be used in the present invention is a polymer containing acrylic acid or an acrylate 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 containing polymerization units containing cationic groups may not provide sufficient thickening effect, so it is preferable that they do not contain cationic groups. A typical example is sodium polyacrylate. By incorporating sodium polyacrylate into the cleanser, a smooth feel can be imparted.

[0026] Such polyacrylic acid thickeners (e) are known to have various molecular weights, but preferably have a weight-average molecular weight of, for example, 4,000,000 to 6,000,000. Furthermore, 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.

[0027] Various polyacrylic acid thickeners are commercially available, and any one can be selected as long as it does not impair the effects of the present invention. Specific examples include Aronvis SX (trade name, manufactured by Toagosei Co., Ltd.), Akupec (trade name, manufactured by Sumitomo Seika Chemicals Co., Ltd.), and Viscomate (trade name, manufactured by Showa Denko K.K.).

[0028] The cleanser according to the present invention essentially comprises the above-mentioned components (a) to (d). However, a cleanser that combines a polyacrylic acid-based thickener in place of (c) a polymer having a cationic group, i.e., a cleanser containing (a) a higher fatty acid or a salt thereof, (b) isomerized sugar, (d) water, and (e) a polyacrylic acid-based thickener, is superior in terms of feel when used and can be used depending on the intended purpose.

[0029] When the cleanser according to the present invention contains a polyacrylic acid thickener, the amount of the polyacrylic acid thickener is preferably 0.001 to 0.3% by mass, more preferably 0.002 to 0.2% by mass, based on the total mass of the cleanser. By keeping the amount of the polyacrylic acid thickener within this range, a cleanser with an excellent balance of foaming and feel when used can be obtained.

[0030] Furthermore, one of the additives used in the cleanser according to the present invention is (f) an alkylene oxide derivative, which can improve the moist feeling of the skin when the cleanser according to the present invention is used, and can also improve the foam quality during use.

[0031] The alkylene oxide derivative (f) used in the cleanser 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 number of moles of oxyalkylene groups and oxyethylene groups added, respectively, and are 1≦p≦70 and 1≦q≦70, the ratio of oxyethylene groups to the total of oxyalkylene groups and oxyethylene groups is 20 to 80 mass%, the oxyalkylene groups and oxyethylene groups may be added in a block form or in 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, and R 1 and R 2 The ratio of the number of hydrogen atoms to the number of hydrocarbon groups is 0.15 or less.

[0032] In the compound represented by the 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 oxyalkylene groups added having 3 to 4 carbon atoms, and is 1≦p≦70, preferably 2≦p≦20. q is the average number of moles of oxyethylene groups added, and is 1≦q≦70, preferably 2≦q≦20. Furthermore, (p+q) is preferably 8 to 100.

[0033] In the compound represented by the formula (1), the proportion of oxyethylene groups relative to the total of oxyalkylene groups having 3 to 4 carbon atoms and oxyethylene groups is preferably 20 to 80% by mass. The order in which ethylene oxide and alkylene oxide having 3 to 4 carbon atoms are added is not particularly limited. The oxyethylene groups and oxyalkylene groups having 3 to 4 carbon atoms may be added in a block or random manner, but are preferably added in a random manner. Here, the block form includes not only two-stage blocks but also three-stage blocks.

[0034] R 1 and R 2 The R groups may be the same or 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, Y / X being the ratio of the number of hydrocarbon groups (X) to the number of hydrogen atoms (Y).

[0035] Specific examples of alkylene oxide derivatives 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 moles) polyoxypropylene (14 moles) dimethyl ether, Polyoxyethylene (15 moles) polyoxypropylene (5 moles) dimethyl ether, Polyoxyethylene (25 mol) polyoxypropylene (25 mol) dimethyl ether, Polyoxyethylene (9 moles) polyoxybutylene (2 moles) dimethyl ether, Polyoxyethylene (14 moles) polyoxybutylene (7 moles) 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 moles) polyoxypropylene (2 moles) dimethyl ether, Polyoxyethylene (14 moles) polyoxypropylene (7 moles) dimethyl ether, or Polyoxyethylene (36 mol) Polyoxypropylene (41 mol) Dimethyl Ether is preferred, Polyoxyethylene (14 mol) Polyoxypropylene (7 mol) Dimethyl Ether is particularly preferred.

[0036] 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.

[0037] The amount of 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 alkylene oxide derivative within this range, the cleanser will have gentle cleansing properties and will also provide better makeup application and wear after use.

[0038] The cleanser 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 alkylphenyl ethers such as POE nonylphenyl ether; POE·POP alkyl ethers; Pluronic types; POE castor oil; POE hydrogenated castor oil derivative; Sugars such as sugar esters, sugar ethers, and sugar amides; and Alkyl glycosides Among these, one or more may be used in combination. In particular, alkylene glycol fatty acid esters are preferred, and diethylene glycol laurate is more preferred.

[0039] When the cleanser according to the present invention contains a nonionic surfactant, the blending amount thereof is preferably 0.1 to 15 mass %, more preferably 0.3 to 10 mass %, based on the total mass of the cleanser.

[0040] The cleanser according to the present invention may also contain surfactants other than nonionic surfactants, such as anionic surfactants or amphoteric surfactants.

[0041] Specific examples of anionic surfactants that can be used in the cleansing agent according to the present invention include polyoxyethylene alkyl sulfate surfactants; 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 (sodium POE-oleyl ether phosphate, POE-stearyl ether phosphate, etc.); Sulfosuccinates (e.g., sodium di-2-ethylhexyl sulfosuccinate, sodium monolauroyl monoethanolamide polyoxyethylene sulfosuccinate, and sodium lauryl polypropylene glycol sulfosuccinate, etc.); 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); Sulfated oils (e.g., turmeric oil, etc.); POE-Alkyl ether carboxylic acids; POE-Alkyl Allyl Ether Carboxylate; α-olefin sulfonates; Higher fatty acid ester sulfonates; Secondary alcohol sulfate ester salts; Higher fatty acid alkylolamide sulfate ester salts; Sodium lauroyl monoethanolamide succinate; N-palmitoyl aspartic acid ditriethanolamine; and Sodium caseinate etc.

[0042] When the cleanser according to the present invention contains an anionic surfactant, the amount thereof is preferably 30% by mass or less, more preferably 10 to 20% by mass, based on the total mass of the cleanser.

[0043] The amphoteric surfactant that can be used in the present invention is not particularly limited, but examples thereof include: Imidazoline-based 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, lauryldimethylaminoacetic acid betaine, alkyl betaine, amido betaine, sulfobetaine, and cocamidopropyl betaine) and the like, preferably, betaine surfactants are used, and more preferably, cocamidopropyl betaine is used.

[0044] When the cleanser according to the present invention contains an amphoteric surfactant, the amount of the amphoteric surfactant blended is particularly preferably 20% by mass or less, more preferably 3 to 18% by mass, and even more preferably 5 to 12% by mass, based on the total mass of the cleanser.

[0045] The cleanser of the present invention can contain, in addition to the above-mentioned ingredients, ingredients typically used in cosmetic and pharmaceutical cleansers, and is produced by conventional methods. Such ingredients include those listed below, and the cleanser can be produced by further blending one or more of the following ingredients as long as the effects of the present invention are achieved.

[0046] 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 robur extract, yarrow extract, and melilot extract.

[0047] Examples of powder components include: Inorganic powders (e.g., talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, lepidolite, biotite, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstates, magnesium, silica, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powders, metal soaps (e.g., zinc myristate, calcium palmitate, 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), 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, low-order titanium oxide, 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.); Pearl 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); 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); and Natural pigments (e.g., chlorophyll and beta-carotene) etc.

[0048] 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, camellia oil, castor oil, linseed oil, safflower oil, cottonseed oil, perilla oil, soybean oil, peanut oil, tea seed oil, Japanese kaya oil, rice bran oil, Chinese tung oil, Japanese tung oil, jojoba oil, germ oil, and triglycerin.

[0049] Examples of solid fats and oils include cocoa butter, coconut oil, horse fat, hardened coconut oil, palm oil, beef tallow, mutton tallow, hardened beef tallow, palm kernel oil, lard, beef bone fat, Japan wax kernel oil, hardened oil, beef foot fat, Japan wax, and hardened castor oil.

[0050] Examples of waxes include beeswax, candelilla wax, cotton wax, carnauba wax, bayberry wax, ivory wax, spermaceti, montan wax, rice bran wax, lanolin, kapok wax, acetated lanolin, 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.

[0051] Examples of hydrocarbon oils include liquid paraffin, ozokerite, squalane, pristane, paraffin, ceresin, squalene, petrolatum, and microcrystalline wax.

[0052] 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); Branched-chain alcohols (e.g., monostearyl glycerin ether (batyl alcohol), 2-decyltetradecinol, lanolin alcohol, cholesterol, phytosterols, hexyldodecanol, isostearyl alcohol, and octyldodecanol) etc.

[0053] 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 esters, 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-heptylundecanoic acid glyceride, castor oil fatty acid methyl ester, oleyl oleate, acetoglyceride, 2-heptylundecanoic acid 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.

[0054] Examples of silicone oils include: linear polysiloxanes (e.g., dimethylpolysiloxane, methylphenylpolysiloxane, and diphenylpolysiloxane); cyclic polysiloxanes (e.g., octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane); Silicone resin forming a three-dimensional network structure; Silicone rubber; Various modified polysiloxanes (amino-modified polysiloxanes, polyether-modified polysiloxanes, alkyl-modified polysiloxanes, fluorine-modified polysiloxanes, etc.) etc.

[0055] Examples of natural polymers include: Plant-based polymers (e.g., gum arabic, tragacanth gum, 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, pullulan, etc.); and Animal-based polymers (e.g., collagen, casein, albumin, and gelatin) etc.

[0056] Examples of semi-synthetic polymers include: Starch-based polymers (e.g., carboxymethyl starch, and methylhydroxypropyl starch); Cellulose-based polymers (such as methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose sulfate, hydroxypropylcellulose, carboxymethylcellulose, sodium carboxymethylcellulose, crystalline cellulose, and cellulose powder); and Examples include alginic acid polymers (for example, sodium alginate, propylene glycol alginate, etc.).

[0057] Examples of synthetic polymers include: vinyl polymers (e.g., polyvinyl alcohol, polyvinyl methyl ether, polyvinylpyrrolidone, and carboxyvinyl polymers); Polyoxyethylene polymers (e.g., polyethylene glycol 20,000, 40,000, 60,000 polyoxyethylene and polyoxypropylene copolymers, etc.); acrylic polymers (e.g., sodium polyacrylate, polyethyl acrylate, and polyacrylamide); Polyethyleneimine; and Examples include cationic polymers.

[0058] Examples of thickeners other than component (e) include gum arabic, carrageenan, karaya gum, tragacanth gum, carob gum, quince seed, casein, dextrin, gelatin, sodium pectinate, sodium allaginate, methylcellulose, ethylcellulose, CMC, hydroxyethyl cellulose, hydroxypropyl cellulose, PVA, PVM, PVP, carboxyvinyl polymer, locust bean gum, guar gum, tamarind gum, dialkyldimethylammonium cellulose sulfate, xanthan gum, magnesium aluminum silicate, bentonite, hectorite, magnesium aluminum silicate (Bee Gum), laponite, and anhydrous silicic acid.

[0059] Examples of ultraviolet absorbers 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; 4-Methoxy-4'-t-butyldibenzoylmethane; and 5-(3,3-dimethyl-2-norbornylidene)-3-pentan-2-one and the like.

[0060] 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.

[0061] Examples of lower alcohols include ethanol, propanol, isopropanol, isobutyl alcohol, and t-butyl alcohol.

[0062] 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); 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); 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); glycerin monoalkyl ethers (e.g., xyl alcohol, selachyl alcohol, and batyl alcohol); Sugar alcohols (e.g., sorbitol, maltitol, maltotriose, mannitol, sucrose, erythritol, glucose, fructose, starch-degrading sugars, maltose, xylitose, and starch-degrading sugar reducing alcohols, etc.); Grisolid; Tetrahydrofurfuryl alcohol; POE-Tetrahydrofurfuryl alcohol; POP-butyl ether; POP·POE-butyl ether; Tripolyoxypropylene glycerin ether; POP-glycerol ether;POP-glycerol ether phosphate; POP·POE-pentaneerythritol ether; and Polyglycerin etc.

[0063] Examples of monosaccharides include: tricarbon sugars (e.g., D-glyceraldehyde, and dihydroxyacetone); tetracarbon sugars (e.g., D-erythrose, D-erythrulose, D-threose, and erythritol); pentose sugars (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, D-tagatose, etc.); Seven-carbon sugars (e.g., aldoheptose, heprose, etc.); eight-carbon sugars (e.g., octulose); Deoxy sugars (e.g., 2-deoxy-D-ribose, 6-deoxy-L-galactose, and 6-deoxy-L-mannose); Amino sugars (e.g., D-glucosamine, D-galactosamine, sialic acid, and aminouronic acids, 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.

[0064] Examples of oligosaccharides include sucrose, gunthianose, umbelliferose, lactose, planteose, isolychnoses, α,α-trehalose, raffinose, lychnoses, umbilicin, and stachyose verbascoses.

[0065] 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.

[0066] Examples of amino acids include neutral amino acids (e.g., threonine, cysteine, etc.) and basic amino acids (e.g., hydroxylysine, etc.), etc. Examples of amino acid derivatives include sodium acyl sarcosine (sodium lauroyl sarcosine), acyl glutamate, sodium acyl β-alanine, glutathione, and pyrrolidone carboxylic acid.

[0067] Examples of organic amines include monoethanolamine, diethanolamine, triethanolamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, and 2-amino-2-methyl-1-propanol.

[0068] 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.

[0069] 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.

[0070] Examples of antioxidants include tocopherols, dibutylhydroxytoluene, butylhydroxyanisole, gallic acid esters, sulfites, and hydrogen sulfites. Examples of antioxidant aids include phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, and ethylenediaminetetraacetic acid.

[0071] Other ingredients that can be added include, for example: 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 chinensis, Lithospermum root, Peony, Swertia japonica, Birch, Sage, Loquat, Carrot, Aloe, Mallow, Iris, Grape, Job's tears, Loofah, Lily, Saffron, Cnidium rhizome, Angelica acutiloba, St. John's wort, Ononis, Garlic, Red pepper, Citrus fruit, Angelica acutiloba, and Seaweed, etc.); Enhancers (e.g., royal jelly, photosensitizers, cholesterol derivatives, etc.); blood circulation enhancers (e.g., nonylic acid valenilamide, 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); Antiseborrheic agents (e.g., sulfur, thianthol, etc.); Anti-inflammatory agents (for example, tranexamic acid, thiotaurine, hypotaurine, etc.) are included.

[0072] A preferred embodiment of the cleanser according to the present invention is a viscous liquid. The term "viscous liquid" refers to a liquid to semi-solid cleanser having fluidity, and the viscosity (as measured with a Brookfield viscometer at 30°C) is preferably 1,000 mPa·s or greater.

[0073] The cleanser according to the present invention is preferably a skin cleanser, and is particularly suitable for use in cleaning the skin after going out and applying makeup. It is preferable that the cleanser be in the form of a lotion, gel, or cream, with the cream form being particularly preferred.

[0074] A preferred embodiment of the cleanser according to the present invention is a makeup remover, which includes lipstick, foundation, and sunscreen.

[0075] A preferred embodiment of the cleanser according to the present invention is a sebum cleanser. 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 period of time, it can oxidize due to ultraviolet rays and other factors, which can have a negative effect on the skin. Therefore, it is preferable to remove such sebum stains with the cleanser according to the present invention.

[0076] A preferred embodiment of the cleanser according to the present invention is a skin moisturizing cleanser, which can remove and cleanse sebum and other impurities while preventing evaporation of moisture from the stratum corneum of the skin.

[0077] The cleanser according to the present invention may be in any formulation, including a solution system, a solubilized system, an emulsion system, a powder dispersion system, a water-oil two-layer system, and a water-oil-powder three-layer system. [Example]

[0078] The present invention will be described in detail based on the following examples, but the present invention is not limited to these examples. Unless otherwise specified, the blending amounts are expressed in mass %.

[0079] [Examples 1-6] The cleansers of Examples 1 to 6 were prepared according to the formulations shown in Table 1.

[0080] Furthermore, the performance of these cleansers was evaluated according to the following criteria.

[0081] [Foam quality (viscoelasticity)] Each sample was mixed with water and foamed, and then the storage modulus was measured at 25°C using a strain-controlled rheometer, and the foam quality was evaluated according to the following criteria. A: 4.50(Pa) or more B: 3.50~4.49 (Pa) C: 2.50~3.49 (Pa) D: 2.49 (Pa) or less

[0082] [Foam density] The sample was mixed with water to create foam, and the number of bubbles per unit area was evaluated by microscopic observation. A: 120 (pcs / mm 2 ) End B: 100~119(pcs / mm 2 ) C: 80~99(pcs / mm 2 ) D: 79 (pcs / mm 2 )below

[0083] [Usage] Five expert panelists washed their faces with each sample and evaluated the sensation of use on the following items on a 5-point scale from 5 (excellent) to 1 (poor), with the average value being used as the evaluation of the sensation of use. Quick foaming with water Moisturizing after washing your face Smooth skin after washing No tightness on the skin after washing A: 3.5 or higher B: 2.5~3.4 C: 1.5~2.4 D: 1.4 or less

[0084] [Moisturizing] Ten subjects washed the inner forearms with facial cleanser (Savon d'Or, Shiseido Co., Ltd., Tokyo), allowed to equilibrate for 30 minutes, and then measured the stratum corneum moisture content (control). The inner forearms were then washed with each sample (Tables 1, 5, and 6), allowed to equilibrate for another 30 minutes, and then measured. Stratum corneum moisture content was measured at five locations within a 3 x 8 cm area along the longitudinal axis of the inner forearm using a probe (Multiprobe MPA5, COURAGE+KHAZAKA, Germany) connected to a Corneometer (Corneometer CM825, COURAGE+KHAZAKA, Germany). The highest and lowest values were removed and the average of the three measurements was used (temperature 25°C ± 1°C, humidity 40% ± 5% RH). The stratum corneum moisture content after sample application was calculated and evaluated, with the control stratum moisture content set at 1. A: 1.061 or more B: 1.051 to 1.060 C: 1.041 to 1.050 D: 1.040 or less

[0085] [Table 1] *1: Pentavitin (product name, manufactured by DSM Co., Ltd.) *2: Marquardt 550PR (product name, manufactured by Nalco) *3: Aronvis SX (product name, manufactured by Toagosei Co., Ltd.)

[0086] The results show that cleansers containing the essential components of the present invention exhibit excellent properties. Furthermore, it is clear that the foam quality is further improved by combining them with a polyacrylic acid thickener. Example 6, which contains components (a) to (f), is excellent not only in foam quality but also in the feel of use.

Claims

1. (a) a higher fatty acid or a salt thereof, (b) isomerized sugar syrup, (c) a polymer having a cationic group; (d) water, and (e) Polyacrylic acid-based thickener Including cleaning products.

2. 2. The cleanser according to claim 1, wherein the salt of the higher fatty acid is a potassium salt or a sodium salt of the higher fatty acid.

3. 3. The cleanser according to claim 1, wherein the neutralization rate of the salt of the higher fatty acid is 80 to 120%.

4. 4. The cleansing agent according to claim 1, wherein the isomerized sugar (b) is isomerized glucose, fructose, or lactose, or a mixture thereof.

5. 5. The cleansing agent according to claim 1, wherein the amount of the isomerized sugar (b) blended is 0.01 to 5% by mass based on the total mass of the cleansing agent.

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

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

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

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

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

11. The cleansing agent according to any one of claims 1 to 10, wherein the polyacrylic acid-based thickener (e) has a weight-average molecular weight of 4,000,000 to 6,000,000.

12. 12. The cleanser according to claim 1, 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 cleanser.

13. The cleanser according to any one of claims 1 to 12, wherein the blending amount of the polymer (c) having a cationic group is 0.1 to 2.0 mass% based on the total mass of the cleanser.

14. The cleanser according to any one of claims 1 to 13, wherein the blending amount of the polyacrylic acid-based thickener (e) is 0.001 to 0.3 mass% based on the total mass of the cleanser.

15. The cleansing agent according to any one of claims 1 to 14, further comprising an alkylene oxide derivative (f).

16. The cleansing agent according to claim 15, wherein the alkylene oxide derivative (f) 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 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, and R １ and R ２ The ratio of the number of hydrogen atoms to the number of hydrocarbon groups is 0.15 or less.

17. 17. The cleanser according to claim 16, wherein in formula (1), the oxyalkylene groups AO and oxyethylene groups EO are added randomly.

18. The cleanser according to any one of claims 15 to 17, wherein the amount of the alkylene oxide derivative (f) blended is 0.001 to 5 mass % based on the total mass of the cleanser.

19. The cleaning agent according to any one of claims 1 to 18, further comprising a nonionic surfactant.

20. 20. The cleanser 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 cleanser.

21. The cleanser according to any one of claims 1 to 20, which is a viscous liquid.

22. The cleansing agent according to any one of claims 1 to 21, which is a skin cleanser.

23. The cleanser according to any one of claims 1 to 22, which is a skin moisturizing cleanser.

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