Hair washing kit and hair washing method

Abstract

Since they have low viscosity even at low temperatures, they are easy to operate. They are surfactants including anionic surfactants, cationic polymers, dialkyl ethers, and R a -O-(AlkO) m -R b and one or more compounds selected from the group consisting of a compound represented by the following general formula: and polyoxypropylene polyglyceryl ether. The hair wash composition of the present invention can maintain its basic performance even at low temperatures, i.e., it produces good foam volume and quality and can impart sufficient smoothness to hair during lathering and rinsing. The hair wash composition of the present invention can be provided as a kit together with a foam-discharging container. It can also be used in a hair washing method.

Description

[Technical field]

[0001] The present invention relates to a hair wash composition, a kit thereof, and a method for washing hair using the same. [Background technology]

[0002] By applying the hair wash composition in the form of a foam to the hair, the composition can be easily spread over the entire hair upon application, and can be easily blended into the hair. Therefore, hair washes that are filled in a foam-dispensing container for use have been developed in recent years. For example, Patent Document 1 describes a hair cleansing composition which contains a specific amidoamine-type amphoteric surfactant and a specific cationic cellulose and is filled into a foam-discharging container for use. Patent Document 2 describes a hair wash composition which contains an anionic surfactant, a cationic polymer, and a polyoxypropylene polyglyceryl ether and is filled into a foam-discharging container for use. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2013-155143 A [Patent Document 2] JP 2018-177652 A Summary of the Invention

[0004] The present invention provides a hair wash composition comprising the following components (A) to (C) and one or more components selected from the group consisting of component (D-1) and component (D-2): Component (A) Surfactant containing an anionic surfactant Component (B) Cationic polymer Component (C) Dialkyl ether Component (D-1) A compound represented by the following general formula (5): R a -O-(AlkO) m -Rb (5) [In the above general formula (5), R a represents a linear or branched alkyl or alkenyl group having 8 to 10 carbon atoms, AlkO represents a linear or branched alkyleneoxy group having 2 to 4 carbon atoms, m is the number of alkyleneoxy groups and is an average number of 0.5 to 3.5, R b represents a hydrogen atom or a methyl group. Ingredient (D-2) Polyoxypropylene polyglyceryl ether

[0005] The present invention also provides a hair wash kit comprising a foam-discharging container and the hair wash composition of the present invention.

[0006] The present invention further provides a method for washing hair, which comprises applying the above-mentioned hair wash composition of the present invention to hair and lathering or rinsing. [Problem to be solved by the invention]

[0007] The compositions shown in Patent Documents 1 and 2 can be applied to foam-dispensing containers, but there is still room for improvement in the viscosity and properties of these compositions at low temperatures (particularly at temperatures as low as 5° C.) For example, the compositions shown in Patent Documents 1 and 2 exhibit good storage stability at low temperatures, but some of the composition forms have a problem that the viscosity at low temperatures is too high, making it difficult to dispense foam from a foam-dispensing container, and there is still room for improvement in the foam quality at low temperatures. [Means for solving the problem]

[0008] As a result of research by the present inventors, it has been found that the above-mentioned problems can be solved and sufficient smoothness can be imparted to hair even during lathering or rinsing by adding a dialkyl ether and one or more compounds selected from the group consisting of a compound represented by the following general formula (5) and polyoxypropylene polyglyceryl ether to a hair wash composition containing an anionic surfactant and a cationic polymer. R a -O-(AlkO)m -R b (5) [In the above general formula (5), R a represents a linear or branched alkyl or alkenyl group having 8 to 10 carbon atoms, AlkO represents a linear or branched alkyleneoxy group having 2 to 4 carbon atoms, m is the number of alkyleneoxy groups and is an average number of 0.5 to 3.5, R b represents a hydrogen atom or a methyl group. Effect of the Invention

[0009] The hair cleansing composition of the present invention has a lower viscosity even at low temperatures (e.g., 5°C) and can improve foam dischargeability at low temperatures, thereby improving the convenience of operation for users in low temperature environments. In addition, the hair cleansing composition of the present invention has good foam volume and foam quality even at low temperatures, and can impart sufficient smoothness to hair during foaming or rinsing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described in detail.

[0011] The hair wash composition of the present embodiment contains the following components (A) to (C) and one or more components selected from the group consisting of component (D-1) and component (D-2). Component (A) Surfactant containing an anionic surfactant Component (B) Cationic polymer Component (C) Dialkyl ether Component (D-1) A compound represented by the following general formula (5): R a -O-(AlkO) m -R b (5) [In the above general formula (5), R a represents a linear or branched alkyl or alkenyl group having 8 to 10 carbon atoms, AlkO represents a linear or branched alkyleneoxy group having 2 to 4 carbon atoms, m is the number of alkyleneoxy groups and is an average number of 0.5 to 3.5, R brepresents a hydrogen atom or a methyl group. Ingredient (D-2) Polyoxypropylene polyglyceryl ether

[0012] (Component (A)) Component (A) is a surfactant containing at least one anionic surfactant. In addition to anionic surfactants, specific examples of surfactants that can be added as component (A) include cationic surfactants, nonionic surfactants, amphoteric surfactants, etc. Here, the anionic surfactant may be used alone, or one or more of the surfactants listed above may be used in combination with the anionic surfactant.

[0013] The total content of component (A) is, for example, 5% by mass or more, preferably 6% by mass or more, more preferably 7% by mass or more, even more preferably 8% by mass or more, still more preferably 9% by mass or more, and especially preferably 11% by mass or more, based on the entire hair wash composition, from the viewpoints of improving the foam quality when the composition is discharged at low temperature, imparting good foaming (foam volume) during hair washing, and imparting smoothness to the hair during foaming or rinsing. From the same viewpoint, the total content is, for example, 25% by mass or less, preferably 22% by mass or less, more preferably 20% by mass or less, even more preferably 19% by mass or less, still more preferably 17% by mass or less, and especially preferably 15% by mass or less. More specifically, from the above viewpoints, it is, for example, 5% by mass or more and 25% by mass or less, preferably 6% by mass or more and 22% by mass or less, more preferably 7% by mass or more and 20% by mass or less, even more preferably 8% by mass or more and 19% by mass or less, even more preferably 9% by mass or more and 17% by mass or less, and even more preferably 11% by mass or more and 15% by mass or less.

[0014] (anionic surfactant) The anionic surfactant may be any one that is used in a hair wash composition, and specific examples thereof include sulfate-type anionic surfactants such as alkyl sulfates, alkenyl sulfates, polyoxyalkylene alkyl ether sulfates, and polyoxyalkylene alkenyl ether sulfates; sulfonic acid-type anionic surfactants such as sulfosuccinic acid alkyl ester salts, polyoxyalkylene sulfosuccinic acid alkyl ester salts, and alkanesulfonates; and carboxylate-type anionic surfactants such as higher fatty acid salts, polyoxyalkylene alkyl ether carboxylic acids or salts thereof. These may be used alone or in combination of two or more kinds.

[0015] Among these, polyoxyalkylene alkyl ether sulfates, polyoxyalkylene alkenyl ether sulfates, alkyl sulfates, and alkenyl sulfates are preferred, and among these, the polyoxyalkylene alkyl ether sulfates are preferably polyoxyethylene alkyl ether sulfates represented by the following general formula (1).

[0016] R 1 O(CH2CH2O) a SO3M (1) [In the above general formula (1), R 1 represents a linear or branched alkyl or alkenyl group having 8 to 18 carbon atoms, M represents an alkali metal, an alkaline earth metal, ammonium, an alkanolamine or a basic amino acid, and a represents the average number of moles of ethylene oxide added, which is a mass average number of 0.5 to 5.

[0017] Among these, from the viewpoint of achieving both quick lathering and a good lather feel, R 1 is preferably a linear alkyl group having 12 to 14 carbon atoms. The average number of moles a of ethylene oxide (EO) added is preferably 0.9 to 4, more preferably 1 to 3. Furthermore, polyoxyethylene alkyl ether sulfates in which M is ammonium or sodium are preferred, and ammonium laureth sulfate and sodium laureth sulfate are more preferred.

[0018] Furthermore, when the anionic surfactant contains a carboxylic acid type anionic surfactant, the carboxylic acid type anionic surfactant is preferably a polyoxyalkylene alkyl ether carboxylate, and more preferably a polyoxyethylene alkyl ether represented by the following general formula (2).

[0019] R 3 O-(CH2-CH2O) s -CH2COOX (2) [In the above general formula (2), R 3 represents a linear or branched alkyl or alkenyl group having 10 to 18 carbon atoms, X represents a cation derived from an alkali metal, an alkaline earth metal, ammonium, an alkanolamine or a basic amino acid, and s represents the average number of moles of ethylene oxide added, which is a mass average number of 0.5 to 15.

[0020] Among these, from the viewpoint of enriching foaming during washing, R 3 is preferably a linear alkyl group having 12 to 16 carbon atoms. The average number of moles of ethylene oxide (EO) added, s, is preferably 1 to 6. Furthermore, polyoxyethylene alkyl ether carboxylates in which X is ammonium or sodium are preferred, and ammonium laureth carboxylate and sodium laureth carboxylate are more preferred. It is also preferable that the anionic surfactant contains a polyoxyalkylene alkyl ether carboxylate and the above-mentioned polyoxyethylene alkyl ether sulfate.

[0021] From the viewpoint of further improving foaming, the content of the anionic surfactant in the hair wash composition is preferably 5% by mass or more, more preferably 6% by mass or more, even more preferably 7% by mass or more, and especially preferably 8% by mass or more, based on the entire hair wash composition. Also, from the viewpoint of improving foam quality and imparting smoothness to hair during foaming or rinsing, the content of the anionic surfactant in the entire hair wash composition is preferably 25% by mass or less, more preferably 22% by mass or less, even more preferably 20% by mass or less, even more preferably 19% by mass or less, especially preferably 17% by mass or less, especially preferably 15% by mass or less, especially preferably 13% by mass or less, and especially preferably 12% by mass or less. More specifically, from the above viewpoints, it is, for example, 5% by mass or more and 25% by mass or less, preferably 6% by mass or more and 22% by mass or less, more preferably 7% by mass or more and 20% by mass or less, even more preferably 8% by mass or more and 19% by mass or less, even more preferably 8% by mass or more and 17% by mass or less, even more preferably 8% by mass or more and 15% by mass or less, even more preferably 8% by mass or more and 13% by mass or less, and even more preferably 8% by mass or more and 12% by mass or less.

[0022] The mass ratio of the content of the anionic surfactant to the content of component (A) in the hair wash composition ((anionic surfactant) / (A)) is, from the viewpoint of improving the cleaning effect, preferably 0.25 or more, more preferably 0.3 or more, and even more preferably 0.5 or more. From the same viewpoint, it is preferably 1 or less, more preferably 0.9 or less, and even more preferably 0.8 or less. More specifically, from the above viewpoint, it is, for example, 0.25 or more and 1 or less, preferably 0.3 or more and 0.9 or less, and more preferably 0.5 or more and 0.8 or less.

[0023] (Cationic Surfactant) In the hair wash composition of the present invention, a cationic surfactant can be used as necessary, and specific examples thereof include a tertiary amine compound or its salt and a quaternary ammonium salt. More specifically, the cationic surfactants described in JP 2017-019748 A can be used. These can be used alone or in combination of two or more kinds.

[0024] When a cationic surfactant is added, the content of the cationic surfactant in the hair wash composition is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, even more preferably 0.2% by mass or more, and even more preferably 0.3% by mass or more, based on the total mass of the hair wash composition, from the viewpoint of imparting smoothness to hair during lathering or rinsing. From the same viewpoint, the content is preferably 2% by mass or less, more preferably 1% by mass or less, and even more preferably 0.7% by mass or less. More specifically, from the above viewpoint, it is, for example, 0.05% by mass or more and 2% by mass or less, preferably 0.1% by mass or more and 1% by mass or less, more preferably 0.2% by mass or more and 0.7% by mass or less, and even more preferably 0.3% by mass or more and 0.7% by mass or less.

[0025] (Nonionic surfactant) Component (A) may further contain a nonionic surfactant as necessary. The addition of a nonionic surfactant can improve the cleaning effect. The nonionic surfactant may be any surfactant that is used in a hair wash composition, and specific examples thereof include alkyl polyglycosides; polyoxyalkylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, and polyoxyethylene isostearyl ether; polyoxyethylene hydrogenated castor oil; glycerin fatty acid esters; sorbitan fatty acid esters; polyoxyalkylene sorbitol fatty acid esters; (poly)ethylene glycol fatty acid esters such as polyethylene glycol fatty acid esters; polyoxyalkylene fatty acid esters; polyoxyalkylene sorbitan fatty acid esters such as polyoxyethylene sorbitan fatty acid esters; monoalkyl glyceryl ethers such as 2-ethylhexyl glyceryl ether and isodecyl glyceryl ether; monoalkenyl glyceryl ethers; fatty acid monoalkanolamides such as coconut oil fatty acid monoethanolamide and coconut oil fatty acid N-methyl monoethanolamide. The alkyl group in the nonionic surfactant may be linear or branched. These may be used alone or in combination of two or more types.

[0026] Among these, nonionic surfactants containing a compound represented by the following general formula (3) are preferred from the viewpoint of obtaining good foaming. R 2 -O-(CH2CH2-O) n -H (3) [In the above general formula (3), R 2 represents a linear or branched alkyl or alkenyl group having 12 to 24 carbon atoms, and n represents a number from 1 to 50. Among these, R in general formula (3) 2 is preferably a linear alkyl group having 12 to 20 carbon atoms. In addition, n is preferably 1 to 25.

[0027] When a nonionic surfactant is added, the content of the nonionic surfactant in the hair wash composition is preferably 0.1% by mass or more, more preferably 0.5% by mass or more, and even more preferably 1% by mass or more, based on the total amount of the hair wash composition, from the viewpoints of improving the foam quality when the composition is discharged at a low temperature (5° C.), imparting good foaming (foam volume) during hair washing, and imparting smoothness to the hair during foaming or rinsing. From the same viewpoints, the content is preferably 10% by mass or less, more preferably 7% by mass or less, and even more preferably 5% by mass or less. More specifically, from the above viewpoint, it is, for example, 0.1% by mass or more and 10% by mass or less, preferably 0.5% by mass or more and 7% by mass or less, and more preferably 1% by mass or more and 5% by mass or less.

[0028] (Amphoteric surfactant) The amphoteric surfactant may be any surfactant that is used in a hair wash composition, and examples of such surfactants include betaine type surfactants, amino acid type surfactants, imidazoline type surfactants, aminoxide type surfactants, etc. These may be used alone or in combination of two or more kinds. Among these, specific examples of the betaine type surfactant include carbobetaine type surfactants such as alkyl carbobetaines; sulfobetaine type surfactants such as alkyl sulfobetaines, alkyl hydroxysulfobetaines (for example, lauryl hydroxysultaine, etc.), and alkyl amido hydroxysulfobetaines; alkyl amido amine type betaines; and alkyl imidazoline type betaines. Among these, from the viewpoints of foam quality and the feeling upon lathering or rinsing, the amphoteric surfactant is preferably an alkylamidopropylbetaine or an alkylhydroxysulfobetaine having an alkyl group having 8 to 18 carbon atoms, more preferably an alkylhydroxysulfobetaine, such as laurylhydroxysulfobetaine or myristylhydroxysulfobetaine, and even more preferably laurylhydroxysulfobetaine. Moreover, the alkylamidopropyl betaine having an alkyl group having 8 to 14 carbon atoms is preferably lauramidopropyl betaine.

[0029] The content of the amphoteric surfactant in the hair wash composition is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, and even more preferably 0.5% by mass or more, based on the total mass of the hair wash composition, from the viewpoints of improving foaming and imparting smoothness to the hair during foaming or rinsing. From the same viewpoints, the content is preferably 10% by mass or less, more preferably 5% by mass or less, even more preferably 4% by mass or less, even more preferably 3% by mass or less, and even more preferably 2% by mass or less. More specifically, from the above viewpoints, it is, for example, 0.1 mass% or more and 10 mass% or less, preferably 0.2 mass% or more and 5 mass% or less, more preferably 0.5 mass% or more and 4 mass% or less, even more preferably 0.5 mass% or more and 3 mass% or less, and even more preferably 0.5 mass% or more and 2 mass% or less.

[0030] (Component (B)) Component (B) is a cationic polymer. A cationic polymer is a polymer that contains cationic groups, such as quaternary ammonium groups, or groups that become cationic groups upon ionization (e.g., primary, secondary, or tertiary ammonium groups).

[0031] Specific examples of cationic polymers include cationic galactomannans such as cationic guar gum (e.g., Jaguar C14, Jaguar C17, and Jaguar Excel manufactured by Solvay), cationic tara gum (e.g., Catinal CTR-100 manufactured by Toho Chemical Industry Co., Ltd.), cationic locust bean gum (locust bean hydroxypropyltrimonium chloride; e.g., Catinal CLB-100 manufactured by Toho Chemical Industry Co., Ltd.), and cationic fenugreek gum (e.g., Catinal CF-100 manufactured by Toho Chemical Industry Co., Ltd.), as well as cationic xanthan gum and cationic cellulose (e.g., PPG-2 Hydroxypropyltrimonium cellulose, polyquaternium-10 (e.g., Poise C-60H, Poise C-80M, and Poise C-150L manufactured by Kao Corporation), cationic starch, homopolymer of diallyl dimethyl quaternary ammonium salt (polyquaternium-6; e.g., Mercoat 100 manufactured by Lubrizol Corporation), diallyl dimethyl quaternary ammonium salt / acrylamide copolymer (polyquaternium-7; e.g., Mercoat 550, Mercoat 740, and Mercoat 2200 manufactured by Lubrizol Corporation), diallyl dimethyl quaternary ammonium salt / acrylic acid copolymer (polyquaternium-22; e.g., Mercoat 280 manufactured by Lubrizol Corporation), N,N -Dimethylaminoethyl methacrylate diethyl sulfate·N,N-dimethylacrylamide·dimethacrylate polyethylene glycol copolymer (Polyquaternium-52; e.g., Kao Corporation's SOFCARE KG-101E and SOFCARE KG-301W), quaternized polyvinylpyrrolidone derivatives, polyglycol polyamine condensates, vinylimidazolium trichloride / vinylpyrrolidone copolymers, hydroxyethylcellulose / dimethyldiallylammonium chloride copolymers (Polyquaternium-4; e.g., Akzo Nobel's Celcoat L200), vinylpyrrolidone / quaternized dimethylaminoethyl methacrylate copolymers (Polyquaternium-11;Examples of such copolymers include Gafcut 755 manufactured by Ashland Co., Ltd., polyvinylpyrrolidone / alkylaminoacrylate copolymers, polyvinylpyrrolidone / alkylaminoacrylate / vinylcaprolactam copolymers (e.g., copolymers 845, 937, and 958 manufactured by Ashland Co., Ltd.), vinylpyrrolidone / methacrylamidopropyl trimethylammonium chloride copolymers (Gafcut HS-100 manufactured by Ashland Co., Ltd.), alkylacrylamide / acrylate / alkylaminoalkylacrylamide / polyethylene glycol methacrylate copolymers, adipic acid / dimethylaminohydroxypropylethylenetriamine copolymers (Cartaretin manufactured by Sandoz Co., Ltd., USA), and cationic polymers described in JP-A-53-139734 and JP-A-60-36407.

[0032] Among them, from the viewpoint of providing good foaming (foam volume) and good foam quality during hair washing and from the viewpoint of providing smoothness to hair during foaming or rinsing, it is preferable that component (B) is one or more selected from the group consisting of cationized guar gum, PPG-2 hydroxypropyltrimonium cellulose, cationized galactomannan, cationized starch, polyquaternium-6, polyquaternium-7, polyquaternium-10, polyquaternium-22, and polyquaternium-52. Furthermore, it is more preferable that component (B) is at least one selected from the group consisting of cationized guar gum, PPG-2 hydroxypropyltrimonium cellulose, cationized galactomannan, polyquaternium-6, polyquaternium-7, polyquaternium-10, and polyquaternium-22. These components (B) can be used alone or in combination of two or more.

[0033] The content of component (B) in the hair cleanser composition is preferably 0.01% by mass or more, more preferably 0.015% by mass or more, and even more preferably 0.03% by mass or more, based on the total mass of the hair cleanser composition, from the viewpoint of imparting good foam quality during hair washing and smoothness to the hair during lathering or rinsing. Also, from the viewpoint of improving the foam quality during discharge, the content is preferably 1.0% by mass or less, more preferably 0.8% by mass or less, even more preferably 0.7% by mass or less, even more preferably 0.5% by mass or less, even more preferably 0.30% by mass or less, and even more preferably 0.25% by mass or less. More specifically, from the above viewpoints, it is, for example, 0.01 mass% or more and 1.0 mass% or less, preferably 0.015 mass% or more and 0.8 mass% or less, more preferably 0.03 mass% or more and 0.7 mass% or less, even more preferably 0.03 mass% or more and 0.5 mass% or less, still more preferably 0.03 mass% or more and 0.30 mass% or less, and even more preferably 0.03 mass% or more and 0.25 mass% or less.

[0034] (Component (C)) The present inventors have found that by adding a dialkyl ether (hereinafter also referred to as component (C)) to the hair cleansing composition, a significant increase in the viscosity of the hair cleansing composition at low temperatures can be avoided, thereby facilitating foam discharge from a foam discharge container, greatly improving convenience of operation, and also providing good foam quality at low temperatures and sufficient smoothness to the hair even during foaming or rinsing. Component (C) is represented by the following general formula (4). R 4 -OR 5 (4) [In the above general formula (4), R 4 and R 5may be the same or different, and each independently represents a linear or branched alkyl group having 3 to 18 carbon atoms, for example, a linear or branched alkyl group having 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, or 18 carbon atoms, such as, but not limited to, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a nonyl group, or a decyl group. In the above general formula (4), R 4 and R 5 are each independently preferably an alkyl group having 5 to 14 carbon atoms, and more preferably an alkyl group having 6 to 10 carbon atoms.

[0035] The content of component (C) in the hair cleanser composition is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and even more preferably 0.1% by mass or more, based on the total amount of the hair cleanser composition, from the viewpoints of further reducing the viscosity of the hair cleanser and improving the foam quality during low-temperature discharge. From the same viewpoints, the content is preferably 5% by mass or less, more preferably 4% by mass or less, even more preferably 3% by mass or less, even more preferably 2% by mass or less, and even more preferably 1% by mass or less. More specifically, from the above viewpoints, it is, for example, 0.01% by mass or more and 5% by mass or less, preferably 0.05% by mass or more and 4% by mass or less, more preferably 0.1% by mass or more and 3% by mass or less, even more preferably 0.1% by mass or more and 2% by mass or less, and even more preferably 0.1% by mass or more and 1% by mass or less.

[0036] The mass ratio ((C) / (B)) of the content of component (C) to the content of component (B) in the hair wash composition is, from the viewpoints of improving the foam quality when the composition is discharged at low temperature, of imparting good foaming (foam volume) during hair washing, and of imparting smoothness to the hair during foaming or rinsing, for example, 2 or more, preferably 3 or more, and more preferably 5 or more. From the same viewpoints, the mass ratio is preferably 50 or less, more preferably 30 or less, and even more preferably 25 or less. More specifically, from the above viewpoint, it is, for example, 2 or more and 50 or less, preferably 3 or more and 30 or less, and more preferably 5 or more and 25 or less.

[0037] (Component (D-1)) Component (D-1) is a compound represented by the following general formula (5). R a -O-(AlkO) m -R b (5) In the above general formula (5), R a represents a linear or branched alkyl or alkenyl group having 8 to 10 carbon atoms, AlkO represents a linear or branched alkyleneoxy group having 2 to 4 carbon atoms (e.g., -CH2CHO-, -CH2CH2CH2O-, -CH2CH2CH2CH2O- or -CH2CH(CH3)O-), m is the number of alkyleneoxy groups and is an average number of 0.5 to 3.5, R b represents a hydrogen atom or a methyl group. An example of component (D-1) is PPG-3 caprylyl ether. The content of component (D-1) is preferably 0.05% by mass or more, more preferably 0.1% by mass or more, based on the total amount of the hair cleansing composition, from the viewpoint of providing smoothness to hair during lathering or rinsing. From the same viewpoint, the content is preferably 3% by mass or less, more preferably 1.5% by mass or less. More specifically, from the above viewpoint, the content is, for example, from 0.05% by mass to 3% by mass, and preferably from 0.1% by mass to 1.5% by mass.

[0038] (Component (D-2)) Component (D-2) is a polyoxypropylene polyglyceryl ether, which refers here to a condensation product of two or more molecules of glycerin and two or more molecules of propylene oxide (or propylene glycol), and further to a condensation product of a polyglycerin in which two or more molecules of glycerin are condensed, and two or more molecules of propylene oxide (or propylene glycol).

[0039] The degree of polymerization of glycerin in component (D-2) is, from the viewpoint of reducing the viscosity of the hair wash composition, obtaining good foam quality during hair washing, and imparting smoothness to the hair during lathering or rinsing, 2 or more, preferably from 2 to 10, more preferably from 2 to 5, even more preferably from 2 to 3, and even more preferably 2.

[0040] In addition, from the viewpoints of imparting good foam quality during hair washing and smoothness to the hair during lathering or rinsing, the number of moles of propylene oxide added in component (D-2) is preferably 3 or more, more preferably 5 or more, even more preferably 7 or more, even more preferably 9 or more, and is preferably 24 or less, more preferably 20 or less, even more preferably 15 or less, and even more preferably 14 or less. More specifically, from the above viewpoint, it is, for example, 3% or more and 24 or less, preferably 5 or more and 20 or less, more preferably 7 or more and 15 or less, and further preferably 9 or more and 14 or less. When propylene glycol is used, the number of moles of propylene glycol added in component (D-2) is preferably 3 or more and 24 or less, more preferably 3 or more and 20 or less, even more preferably 5 or more and 15 or less, even more preferably 7 or more and 14 or less, and especially preferably 8 or more and 13 or less.

[0041] Examples of commercially available products that can be used as component (D-2) include polyoxypropylene diglyceryl ethers manufactured by NOF Corp., such as Unilube DGP-700 (PPG-9 diglyceryl), Unilube DGP-700F (PPG-9 diglyceryl), and Unilube DGP-950 (PPG-14 diglyceryl); polyoxypropylene diglyceryl ethers manufactured by Sakamoto Pharmaceutical Co., Ltd., such as SY-DP9 (PPG-9 diglyceryl), SY-DP14 (PPG-14 polyglyceryl-2 ether), and SY-DP14T (PPG-14 polyglyceryl-2 ether); and polyoxypropylene polyglyceryl ethers manufactured by Sakamoto Pharmaceutical Co., Ltd., such as SC-P750 (POP(9) polyglyceryl ether), SC-P1000 (POP(14) polyglyceryl ether), and SC-P1600 (POP(24) polyglyceryl ether). These may be used alone or in combination of two or more.

[0042] The content of component (D-2) in the hair wash composition can be adjusted as necessary. For example, in order to obtain a better effect, it can be adjusted according to factors such as the type and content of component (B). From the viewpoint of imparting good foaming (foam volume) and good foam quality during hair washing and from the viewpoint of imparting smoothness to hair during foaming or rinsing, it is, for example, 0.01% by mass or more, preferably 0.025% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.075% by mass or more, even more preferably 0.1% by mass or more, and even more preferably 0.2% by mass or more. From the same viewpoint, it is, for example, 10% by mass or less, preferably 5% by mass or less, more preferably 4% by mass or less, even more preferably 3% by mass or less, even more preferably 2% by mass or less, even more preferably 1.0% by mass or less, even more preferably 0.75% by mass or less, and even more preferably 0.6% by mass or less. More specifically, from the above viewpoints, it is, for example, 0.01% by mass or more and 10% by mass or less, preferably 0.025% by mass or more and 5% by mass or less, more preferably 0.05% by mass or more and 4% by mass or less, even more preferably 0.075% by mass or more and 3% by mass or less, even more preferably 0.1% by mass or more and 2% by mass or less, even more preferably 0.2% by mass or more and 1.0% by mass or less, even more preferably 0.2% by mass or more and 0.75% by mass or less, and even more preferably 0.2% by mass or more and 0.6% by mass or less.

[0043] (aqueous medium) The hair cleansing composition of the present invention contains an aqueous medium. Examples of the aqueous medium include water; lower alcohols such as ethanol and isopropyl alcohol; low molecular weight diols and triols having 6 or less carbon atoms such as 1,3-butylene glycol, glycerin, ethylene glycol, and propylene glycol, and mixtures thereof, and water is preferred. As the water, tap water, deionized water, distilled water, etc. can be used. The content of the aqueous medium in the hair cleansing composition is preferably 50% by mass or more, more preferably 60% by mass or more, based on the entire hair cleansing composition. From the same viewpoint, it is preferably 95% by mass or less, more preferably 92% by mass or less.

[0044] (Other ingredients (E)) The hair wash composition in this embodiment may further contain, in addition to the above-mentioned components (A), (B), (C), (D-1), and (D-2) and the aqueous medium, another component (E) commonly used in the technical field to which the present invention pertains. Hereinafter, the other component (E) used in the hair wash composition of the present embodiment will be described by listing several examples, but the other component (E) of the present invention is not limited to these.

[0045] (Component (E-1)) The hair wash composition may further contain polypropylene glycol (PPG) as component (E-1), which herein refers to a polymer of 3 or more molecules of propylene glycol.

[0046] The degree of polymerization of propylene glycol in component (E-1), from the viewpoint of imparting good foaming (foam volume) and good foam quality during hair washing and from the viewpoint of imparting smoothness to hair during foaming or rinsing, is 3 or more, preferably 5 or more, more preferably 7 or more, and preferably 30 or less, more preferably 26 or less, even more preferably 20 or less, and even more preferably 17 or less. From the same viewpoint, the degree of polymerization of propylene glycol is preferably 3 or more and 30 or less, more preferably 5 or more and 26 or less, and even more preferably 6 or more and 20 or less.

[0047] Specific examples of polypropylene glycols of component (E-1) include PPG-3, PPG-7, PPG-9, PPG-17 and PPG-61. These may be used alone or in combination of two or more kinds.

[0048] The content of component (E-1) in the hair wash composition can be adjusted as necessary. For example, in order to obtain a better effect, it can be adjusted according to factors such as the type and content of component (A). From the viewpoint of imparting good foaming (foam volume) and good foam quality during hair washing and from the viewpoint of imparting smoothness to hair during foaming or rinsing, it is, for example, 0.01% by mass or more, preferably 0.025% by mass or more, more preferably 0.05% by mass or more, even more preferably 0.075% by mass or more, and even more preferably 0.10% by mass or more. From the same viewpoint, it is, for example, 5% by mass or less, preferably 4% by mass or less, more preferably 3% by mass or less, even more preferably 2% by mass or less, and even more preferably 1% by mass or less. More specifically, from the above viewpoints, it is, for example, 0.01% by mass or more and 5% by mass or less, preferably 0.025% by mass or more and 4% by mass or less, more preferably 0.05% by mass or more and 3% by mass or less, even more preferably 0.075% by mass or more and 2% by mass or less, and even more preferably 0.10% by mass or more and 1% by mass or less.

[0049] (Component (E-2)) The hair wash composition of the present embodiment may contain a pH adjuster (component (E-2)) to adjust the pH value to a desired range. Specific examples of pH adjusters include organic carboxylic acids such as lactic acid, malic acid, citric acid, and succinic acid. As other pH adjusters, bases such as sodium hydroxide, potassium hydroxide, and ammonium chloride may be used in combination with these organic acids.

[0050] (Component (E-3)) Moreover, the hair wash composition of this embodiment may further contain an oil (component (E-3)) in order to obtain desired effects such as improved cleaning performance and improved hair finish after drying. Specific examples of the oil include fatty acids such as lauric acid, and silicones.

[0051] (Ingredients other than the above (E)) In the hair cleansing composition of the present embodiment, in addition to the above-mentioned components, components used in ordinary hair cleansing compositions can be appropriately blended depending on the desired effects. Examples of such optional components include antidandruff agents; vitamins; bactericides; anti-inflammatory agents such as glycyrrhizic acid and its salts, such as dipotassium glycyrrhizinate, and glycyrrhetinic acid and its salts; preservatives such as benzoic acid and its salts; chelating agents; moisturizing agents such as sorbitol and panthenol; colorants such as dyes and pigments; eucalyptus extracts such as polar solvent extracts of eucalyptus, conchiolin or its hydrolysates, proteins or its hydrolysates obtained from honey, royal jelly, silk, protein-containing extracts obtained from the seeds of legumes, ginseng extract, rice germ extract, hibamata extract, aloe extract, lotus extract, pomegranate extract, wild rose extract, chamomile extract, licorice extract, shell ginger leaf extract, and chlorella extract; pearl-forming agents such as titanium oxide; fragrances; ultraviolet absorbing agents; antioxidants; shea butter; rose water; sunflower oil; orange oil; eucalyptus oil, etc.

[0052] Next, the pH of the hair wash composition will be described. In this embodiment, the pH is a value measured at 25°C for the hair wash composition. From the viewpoint of improving the foaming and dirt removing performance of the hair wash composition during hair washing, the pH of the hair wash composition of the present embodiment is, for example, 7 or less, preferably 6.5 or less, and more preferably 6 or less. From the same viewpoint, the pH is preferably 2.5 or more, more preferably 3 or more, and even more preferably 3.5 or more. More specifically, from the above viewpoints, it is, for example, 2.5 or more and 7 or less, preferably 3 or more and 6.5 or less, and more preferably 3.5 or more and 6 or less.

[0053] The hair cleansing composition in this embodiment is preferably a liquid composition. In this case, the viscosity of the hair cleansing composition at 5°C, although depending on the amounts and ratios of the above-mentioned components and the structure and mechanism of the foam-discharging container used, is preferably 1 mPa·s or more, more preferably 2 mPa·s or more, and even more preferably 3 mPa·s or more, from the viewpoint of providing a foam quality that is easy to apply to hair, and is preferably 300 mPa·s or less, more preferably 250 mPa·s or less, even more preferably 200 mPa·s or less, and even more preferably 50 mPa·s or less, from the viewpoint of improving the dischargeability when filled into a non-gas type foam-discharging container for use. More specifically, from the above viewpoint, it is, for example, 1 mPa·s or more and 300 mPa·s or less, preferably 2 mPa·s or more and 250 mPa·s or less, more preferably 3 mPa·s or more and 200 mPa·s or less, and even more preferably 3 mPa·s or more and 50 mPa·s or less.

[0054] (Method of producing hair cleansing composition) The method for producing the hair cleansing composition of the present invention is not particularly limited. For example, the hair cleansing composition is produced by mixing one or more selected from the group consisting of components (A) to (C), component (D-1) and component (D-2) with other components as appropriate. More specifically, the hair cleansing composition containing water is produced by mixing one or more selected from the group consisting of components (A) to (C), component (D-1) and component (D-2) with other components as appropriate, and dissolving or dispersing the mixture in water. In one embodiment of the present invention, the composition can be obtained by adding component (A), component (B), component (C), and component (D-1) to water heated to about 50 to 100°C, stirring to homogenize, and then adding component (D-2) and other components as appropriate while cooling, stirring to homogenize, and then cooling to room temperature.

[0055] (Method of using hair cleansing composition, and kit containing hair cleansing composition) The method of using the hair cleansing composition of the present invention is not particularly limited. For example, a kit including the hair cleansing composition of the present invention and a foam-discharging container is provided and used. For example, the hair cleansing composition of the present invention may be filled into a foam-discharging container and used, or the hair cleansing composition of the present invention may be provided as a refill package together with the foam-discharging container and used. The foam dispensing container is preferably used by being filled into a non-gas type foam dispensing container. Any non-gas type foam-discharging container can be used as long as it can be mixed with air and discharged as a foam. Examples include a pump foamer container in which, when the pump head is pressed, the cylinder of the air chamber and the cylinder of the liquid cleanser composition are pressurized, and the air and the liquid cleanser composition are mixed and discharged as a foam, and a squeeze foamer container in which, when the body of the container which can be deformed by pressure is pressed, the container deforms and discharges the composition. It is preferable that a porous membrane filter such as a mesh is provided in the discharge flow path for the hair cleanser composition of these containers. Specific examples of non-gas type foam dispenser containers include foamer containers manufactured by Yoshino Kogyosho Co., Ltd. and Yamato Can Co., Ltd. In addition, foam dispenser containers described in JP-A-7-315463, JP-A-8-230961, JP-A-2005-193972, etc. can also be used.

[0056] The method for washing hair using the hair cleanser composition of this embodiment includes, for example, applying the hair cleanser composition to hair and rinsing it off. The method for washing hair using the hair cleanser composition of this embodiment preferably includes discharging the hair cleanser composition from a foam-dispensing container, applying it to hair, and rinsing it off, and more preferably includes applying the hair cleanser composition discharged from a foam-dispensing container to hair, foaming the applied hair cleanser composition, and rinsing it off. By applying the hair cleanser composition to hair in the form of a foam, it is possible to easily spread the composition over the entire hair when applied, and to easily blend the composition into the hair.

[0057] In the hair wash composition of the present embodiment, specific components (A) to (C) are used in combination with one or more selected from the group consisting of components (D-1) and (D-2). This allows the composition to have excellent foam dischargeability even at room temperature (e.g., 30°C) and discharge high-quality foam. In addition, since the composition has a lower viscosity even at low temperatures (5°C), the composition can maintain excellent foam dischargeability and provide excellent smoothness when lathering or rinsing the hair.

[0058] More specifically, according to the present invention, a hair wash composition having excellent foam dischargeability even at a low temperature of about 5° C. (for example, the environment of a bathroom in winter in a cold region) can be obtained. In addition, a hair wash composition having excellent appearance of discharged foam can be obtained, for example, the discharged foam can be made fine, uniform, and homogeneous.

[0059] Furthermore, the hair wash composition in the present embodiment ensures the above-mentioned good foam quality and foam dischargeability, while also generating excellent foaming when the foam discharged from a container is applied to the hair, and can provide sufficient smoothness to the hair even during lathering or rinsing. As a result, the user can experience, for example, a good feeling of cleanliness, an excellent cleaning effect for sebum stains, and good smoothness of hair when washing their hair.

[0060] In relation to the above-mentioned embodiment, the present invention discloses a hair wash composition, a kit, and a hair wash method that are filled into a foam-discharging container for use. <1> A hair wash composition comprising the following components (A) to (C) and one or more components selected from the group consisting of components (D-1) and (D-2): Component (A) Surfactant containing an anionic surfactant Component (B) Cationic polymer Component (C) Dialkyl ether Component (D-1) A compound represented by the following general formula (5): R a -O-(AlkO) m -R b (5) [In the above general formula (5), R a represents a linear or branched alkyl or alkenyl group having 8 to 10 carbon atoms, AlkO represents a linear or branched alkyleneoxy group having 2 to 4 carbon atoms, m is the number of alkyleneoxy groups and is an average number of 0.5 to 3.5, R b represents a hydrogen atom or a methyl group. Ingredient (D-2) Polyoxypropylene polyglyceryl ether <2> Further containing polypropylene glycol as component (E-1), <1> The hair wash composition according to claim 1. <3> The content of the component (A) in the hair wash composition is 5% by mass or more and 25% by mass or less based on the total amount of the hair wash composition. <1> or <2> The hair wash composition according to claim 1. <4> The component (A) further comprises one or more surfactants selected from the group consisting of cationic surfactants, nonionic surfactants, and amphoteric surfactants. <1> ~ <3> 13. The hair wash composition according to claim 12. <5> The content of the component (B) in the hair wash composition is 0.01% by mass or more and 1% by mass or less based on the total amount of the hair wash composition. <1> ~ <4> 13. The hair wash composition according to claim 12. <6> The component (B) comprises one or more cationic polymers selected from the group consisting of cationic guar gum, PPG-2 hydroxypropyltrimonium cellulose, cationic galactomannan, cationic starch, polyquaternium-6, polyquaternium-7, polyquaternium-10, polyquaternium-22 and polyquaternium-52; <1> ~ <5> 13. The hair wash composition according to claim 12. <7> The content of the component (C) in the hair wash composition is 0.05% by mass or more and 5% by mass or less based on the total amount of the hair wash composition. <1> ~ <6> 13. The hair wash composition according to claim 12. <8> The component (C) is represented by the following general formula (4): <1> ~ <7> 13. The hair wash composition according to claim 12. R 4 -OR 5 (4) [In the above general formula (4), R 4 and R 5 may be the same or different, and each independently represents a linear or branched alkyl group having 3 to 18 carbon atoms. <9> the mass ratio of the content of the anionic surfactant to the content of the component (A) ((anionic surfactant) / (A)) is 0.25 or more and 1 or less; <1> ~ <8> 13. The hair wash composition according to claim 12. <10> The component (A) further comprises a nonionic surfactant and an amphoteric surfactant. <1> ~ <9> 13. The hair wash composition according to claim 12. <11> The total content of the component (A) relative to the entire hair wash composition is preferably 6% by mass or more and 22% by mass or less, more preferably 7% by mass or more and 20% by mass or less, even more preferably 8% by mass or more and 19% by mass or less, even more preferably 9% by mass or more and 17% by mass or less, and even more preferably 11% by mass or more and 15% by mass or less. <1> ~ <10> 13. The hair wash composition according to claim 12. <12> The anionic surfactant in the component (A) is at least one selected from the group consisting of sulfate-type anionic surfactants such as alkyl sulfates, alkenyl sulfates, polyoxyalkylene alkyl ether sulfates, and polyoxyalkylene alkenyl ether sulfates; sulfonic acid-type anionic surfactants such as sulfosuccinic acid alkyl ester salts, polyoxyalkylene sulfosuccinic acid alkyl ester salts, and alkanesulfonates; carboxylate-type anionic surfactants such as higher fatty acid salts, and polyoxyalkylene alkyl ether carboxylic acids or salts thereof, and is preferably at least one selected from the group consisting of polyoxyalkylene alkyl ether sulfates, polyoxyalkylene alkenyl ether sulfates, alkyl sulfates, and alkenyl sulfates. <1> ~ <11> 13. The hair wash composition according to claim 12. <13> The anionic surfactant in the component (A) is a polyoxyethylene alkyl ether sulfate represented by the following general formula (1): <1> ~ <12> 13. The hair wash composition according to claim 12. R 1 O(CH2CH2O) a SO3M (1) [In the above general formula (1), R 1 represents a linear or branched alkyl or alkenyl group having 8 to 18 carbon atoms, M represents an alkali metal, an alkaline earth metal, ammonium, an alkanolamine or a basic amino acid, and a represents the average number of moles of ethylene oxide added, which is a mass average number of 0.5 to 5. <14> R 1 is preferably a linear alkyl group having 12 to 14 carbon atoms, the a is preferably 0.9 to 4, more preferably 1 to 3, and the M is preferably ammonium or sodium. <13> The hair wash composition according to claim 1. <15> The anionic surfactant in the component (A) is ammonium laureth sulfate or sodium laureth sulfate. <1> ~ <14> 13. The hair wash composition according to claim 12. <16> The anionic surfactant in the component (A) is a polyoxyethylene alkyl ether represented by the following general formula (2): <1> ~ <12> 13. The hair wash composition according to claim 12. R 3 O-(CH2-CH2O) s -CH2COOX (2) [In the above general formula (2), R 3 represents a linear or branched alkyl or alkenyl group having 10 to 18 carbon atoms, X represents a cation derived from an alkali metal, an alkaline earth metal, ammonium, an alkanolamine or a basic amino acid, and s represents the average number of moles of ethylene oxide added, which is a mass average number of 0.5 to 15. <17> R 3 is preferably a linear alkyl group having 12 to 16 carbon atoms, s is preferably 1 to 6, and X is preferably ammonium or sodium. <16> The hair wash composition according to claim 1. <18> The anionic surfactant in the component (A) is ammonium laureth carboxylate or sodium laureth carboxylate. <1> ~ <12> , <16> , <17> 13. The hair wash composition according to claim 12. <19> With respect to the entire hair wash composition, the content of the anionic surfactant in the component (A) is 5% by mass or more and 25% by mass or less, preferably 6% by mass or more and 22% by mass or less, more preferably 7% by mass or more and 20% by mass or less, even more preferably 8% by mass or more and 19% by mass or less, even more preferably 8% by mass or more and 17% by mass or less, even more preferably 8% by mass or more and 15% by mass or less, even more preferably 8% by mass or more and 13% by mass or less, and even more preferably 8% by mass or more and 12% by mass or less. <1> ~ <18> 13. The hair wash composition according to claim 12. <20> the mass ratio of the content of the anionic surfactant to the content of component (A) in the hair wash composition ((anionic surfactant) / (A)) is preferably 0.3 or more and 0.9 or less, more preferably 0.5 or more and 0.8 or less; <1> ~ <19> 13. The hair wash composition according to claim 12. <21> the nonionic surfactant is one or more selected from the group consisting of alkyl polyglycosides; polyoxyalkylene alkyl ethers such as polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene isostearyl ether, and polypropylene glycol caprylyl ether; polyoxyethylene hydrogenated castor oil; glycerin fatty acid esters; sorbitan fatty acid esters; polyoxyalkylene sorbitol fatty acid esters; (poly)ethylene glycol fatty acid esters such as polyethylene glycol fatty acid esters; polyoxyalkylene fatty acid esters; polyoxyalkylene sorbitan fatty acid esters such as polyoxyethylene sorbitan fatty acid esters; monoalkyl glyceryl ethers such as 2-ethylhexyl glyceryl ether and isodecyl glyceryl ether; monoalkenyl glyceryl ethers; and fatty acid monoalkanolamides such as coconut oil fatty acid monoethanolamide and coconut oil fatty acid N-methyl monoethanolamide, <4> ~ <20> 13. The hair wash composition according to claim 12. <22> The nonionic surfactant includes a compound represented by the following general formula (3): <4> ~ <21> 13. The hair wash composition according to claim 12. R 2 -O-(CH2CH2-O) n -H (3) [In the above general formula (3), R 2 represents a linear or branched alkyl or alkenyl group having 12 to 24 carbon atoms, and n represents a number from 1 to 50. <23> The content of the nonionic surfactant in the entire hair wash composition is from 0.1% by mass to 10% by mass, preferably from 0.5% by mass to 7% by mass, and more preferably from 1% by mass to 5% by mass. <4> ~ <22> 13. The hair wash composition according to claim 12. <24> The amphoteric surfactant is at least one selected from the group consisting of betaine surfactants, amino acid surfactants, imidazoline surfactants, and aminoxide surfactants, and is preferably an alkylamidopropyl betaine or alkylhydroxysulfobetaine having an alkyl group having 8 to 18 carbon atoms, more preferably an alkylhydroxysulfobetaine, and even more preferably laurylhydroxysulfobetaine or lauramidopropyl betaine. <4> ~ <23> 13. The hair wash composition according to claim 12. <25> The content of the amphoteric surfactant in the entire hair wash composition is from 0.1% by mass to 10% by mass, preferably from 0.2% by mass to 5% by mass, more preferably from 0.5% by mass to 4% by mass, even more preferably from 0.5% by mass to 3% by mass, and still more preferably from 0.5% by mass to 2% by mass. <4> ~ <24> 13. The hair wash composition according to claim 12. <26> The content of the cationic surfactant in the entire hair wash composition is from 0.05% by mass to 2% by mass, preferably from 0.1% by mass to 1% by mass, more preferably from 0.2% by mass to 0.7% by mass, and further preferably from 0.3% by mass to 0.7% by mass. <4> ~ <25> 13. The hair wash composition according to claim 12. <27> the content of the cationic polymer relative to the total amount of the hair wash composition is preferably 0.015% by mass or more and 0.8% by mass or less, more preferably 0.03% by mass or more and 0.7% by mass or less, even more preferably 0.03% by mass or more and 0.5% by mass or less, still more preferably 0.03% by mass or more and 0.30% by mass or less, and even more preferably 0.03% by mass or more and 0.25% by mass or less; <1> ~ <26> 13. The hair wash composition according to claim 12. <28> R 4 and R 5 are each independently preferably an alkyl group having 5 to 14 carbon atoms, and more preferably an alkyl group having 6 to 10 carbon atoms; <8> ~ <27> 13. The hair wash composition according to claim 12. <29> The content of the component (C) relative to the total amount of the hair wash composition is preferably 0.05% by mass or more and 4% by mass or less, more preferably 0.1% by mass or more and 3% by mass or less, even more preferably 0.1% by mass or more and 2% by mass or less, and still more preferably 0.1% by mass or more and 1% by mass or less. <1> ~ <28> 13. The hair wash composition according to claim 12. <30> the mass ratio ((C) / (B)) of the content of the component (C) to the content of the component (B) is 2 or more and 50 or less, preferably 3 or more and 30 or less, and more preferably 5 or more and 25 or less; <1> ~ <29> 13. The hair wash composition according to claim 12. <31> The component (D-1) is PPG-3 caprylyl ether; <1> ~ <30> 13. The hair wash composition according to claim 12. <32> The content of the component (D-1) in the entire hair wash composition is 0.05% by mass or more and 3% by mass or less, and preferably 0.1% by mass or more and 1.5% by mass or less. <1> ~ <31> 13. The hair wash composition according to claim 12. <33> As the component (D-2), a polyglycerol in which two or more molecules of glycerol are condensed and a condensate of two or more molecules of propylene oxide (or propylene glycol) is preferable. <1> ~ <32> 13. The hair wash composition according to claim 12. <34> The component (D-2) is one or more selected from the group consisting of polyoxypropylene diglyceryl ethers Unilube DGP-700 (PPG-9 diglyceryl), Unilube DGP-700F (PPG-9 diglyceryl), Unilube DGP-950 (PPG-14 diglyceryl), polyoxypropylene diglyceryl ethers SY-DP9 (PPG-9 diglyceryl), SY-DP14 (PPG-14 polyglyceryl-2 ether), SY-DP14T (PPG-14 polyglyceryl-2 ether), polyoxypropylene polyglyceryl ethers SC-P750 (POP (9) polyglyceryl ether), SC-P1000 (POP (14) polyglyceryl ether), and SC-P1600 (POP (24) polyglyceryl ether), <1> ~ <33> 13. The hair wash composition according to claim 12. <35> With respect to the total amount of the hair wash composition, the content of the component (D-2) is from 0.01% by mass to 10% by mass, preferably from 0.025% by mass to 5% by mass, more preferably from 0.05% by mass to 4% by mass, even more preferably from 0.075% by mass to 3% by mass, even more preferably from 0.1% by mass to 2% by mass, even more preferably from 0.2% by mass to 1.0% by mass, even more preferably from 0.2% by mass to 0.75% by mass, and even more preferably from 0.2% by mass to 0.6% by mass. <1> ~ <34> 13. The hair wash composition according to claim 12. <36> The degree of polymerization of propylene glycol in the component (E-1) is preferably 3 or more and 30 or less, more preferably 5 or more and 26 or less, and even more preferably 6 or more and 20 or less. <2> ~ <35> 13. The hair wash composition according to claim 12. <37> The component (E-1) is one or more selected from the group consisting of PPG-3, PPG-7, PPG-9, PPG-17 and PPG-61. <2> ~ <36> 13. The hair wash composition according to claim 12. <38> The content of the component (E-1) relative to the total amount of the hair wash composition is from 0.01% by mass to 5% by mass, preferably from 0.025% by mass to 4% by mass, more preferably from 0.05% by mass to 3% by mass, even more preferably from 0.075% by mass to 2% by mass, and still more preferably from 0.10% by mass to 1% by mass. <2> ~ <37> 13. The hair wash composition according to claim 12. <39> Also contains pH adjuster and oil. <1> ~ <38> 13. The hair wash composition according to claim 12. <40> The pH is 2.5 or more and 7 or less, preferably 3 or more and 6.5 or less, more preferably 3.5 or more and 6 or less; <1> ~ <39> 13. The hair wash composition according to claim 12. <41> The viscosity is 1 mPa·s or more and 300 mPa·s or less, preferably 2 mPa·s or more and 250 mPa·s or less, more preferably 3 mPa·s or more and 200 mPa·s or less, and even more preferably 3 mPa·s or more and 50 mPa·s or less. <1> ~ <40> 13. The hair wash composition according to claim 12. <42> A foam dispenser, and <1> ~ <41> The hair wash composition according to any one of the above items is contained in the hair wash composition. Hair cleaning kit. <43> The hair cleansing composition is for refill packaging or is filled into the foam dispensing container. <42> A hair washing kit according to claim 1. <44> <1> ~ <41> 13. A method for washing hair, comprising discharging the hair wash composition according to any one of the above items from a foam-discharging container, applying the composition to hair, and rinsing the composition off. EXAMPLES

[0061] The present invention will be described below with reference to examples, but the present invention is not limited to the scope of the examples. In the examples, various measurements and evaluations were carried out by the following methods.

[0062] (pH measurement) pH meter (e.g., Mettler Toledo TM FiveEasy Plus TM The pH of the hair wash obtained from the hair wash composition at 25° C. was measured using an FEP20 pH Meter (manufactured by Thermo Fisher Scientific).

[0063] (viscosity measurement) The viscosities of the hair wash compositions were measured at 5° C. and 30° C. using a viscometer (for example, Brookfield DV-E Viscometer, manufactured by Brookfield) at a rotation speed of 60 rpm and a No. 1 rotor.

[0064] (Evaluation of foam quality) Approximately 200 mL of the hair cleansing composition was dispensed into a pump foamer container (manufactured by Yoshino Kogyosho Co., Ltd.; mesh sizes of porous membrane filters provided in the foam discharge flow path: one filter is #200 and the other is #305; liquid discharge amount per push: approximately 1 g; air discharge amount (foam discharge amount) per push: approximately 13 cm 3 The mixture was filled into a container (volume: about 300 mL) and left to stand for 4 hours in a constant temperature room at 5°C and 30°C. The container was then placed on a horizontal table, and the pump head was pushed down vertically to the end to eject the foam. The ejection properties of the foam were evaluated sensorily according to the following 5-point scale. 5: Very good ejection properties 4: Good ejection properties 3: Normal discharge 2: Poor ejection properties 1: Very poor ejection properties The same environmental conditions as above were used, but the number of pushes was changed to 4. The obtained foam quality was sensorily evaluated according to the following 5-point scale. 5: Very good foam quality 4: Good foam quality 3: Normal foam quality 2: Poor foam quality 1: The foam quality is very poor

[0065] (Evaluation of hair smoothness when lathering and rinsing) The hair bundle for evaluation was 45 cm long, 2.5 cm wide, and weighed 20 g. The hair bundle was lightly rinsed with warm water at 40°C, and then washed with the hair cleanser obtained by pushing twice. The smoothness of the hair bundle when lathered was evaluated sensorily on the following 5-point scale. 5: Very smooth 4: Good smoothness 3: Normal smoothness 2: Poor smoothness 1: Very poor smoothness The hair bundle with the foam was then rinsed with warm water at 40° C. at a flow rate of 2 L / min. The smoothness of the hair bundle after rinsing was sensorily evaluated according to the following 5-point scale. 5: Very smooth 4: Good smoothness 3: Normal smoothness 2: Poor smoothness 1: Very poor smoothness

[0066] (Examples 1 to 11, Comparative Examples 1 to 6) Hair wash compositions of each example were prepared based on the compositions shown in Tables 1 to 3, and were evaluated according to the above-mentioned methods.

[0067] [Table 1]

[0068] [Table 2] [Table 3]

[0069] According to the above table, compared to the comparative examples, the examples of the present invention, in which a dialkyl ether and one or more compounds selected from the group consisting of component (D-1) and component (D-2) are added, can impart sufficient smoothness to hair when lathering or rinsing, and also show lower viscosity at low temperatures, so that the foam ejection properties and foam quality at low temperatures are clearly improved.

[0070] For example, by comparing Example 1 of the present invention with Comparative Example 1, it can be seen that the addition of a dialkyl ether to the hair washing composition of the present invention lowers the viscosity at 5° C., and the foam ejection property and foam quality are clearly improved. In addition, the smoothness of the hair during foaming or rinsing is also improved. From the comparison results between Example 3 of the present invention and Comparative Example 2, and the comparison results between Example 5 of the present invention and Comparative Examples 4 and 5, it can be seen that the addition of a dialkyl ether to the hair washing composition of the present invention reduces the viscosity at 5° C. and significantly improves the foam dischargeability and foam quality. In addition, the smoothness of the hair during foaming or rinsing is also improved. The comparison results between Examples 1, 5, and 11 of the present invention and Comparative Example 3 show that the addition of one or more compounds selected from the group consisting of component (D-1) and component (D-2) to the hair wash composition of the present invention clearly improves the smoothness of hair during lathering or rinsing. Other embodiments of the present invention also exhibit the above advantages. [Industrial Applicability]

[0071] The hair cleansing composition of the present invention can be suitably used in the field of hair shampoos, etc. In addition, it is also suitable for animals such as dogs and cats, in addition to humans.

Claims

1. A foam dispenser, and The hair wash composition includes one or more selected from the group consisting of the following components (A) to (C) and components (D-1) and (D-2), in which the content of component (C) is 0.1% by mass or more and 3% by mass or less based on the total mass of the hair wash composition, the mass ratio ((C) / (B)) of the content of component (C) to the content of component (B) is 2 or more and 50 or less, and the hair wash composition is filled into a foam-discharging container for use. Hair cleaning kit. Component (A) Surfactant including an anionic surfactant Component (B) Cationic polymer Component (C) Dialkyl ether Component (D-1) A compound represented by the following general formula (5): R ａ -O-(AllkO) ｍ -R ｂ (5) [In the above general formula (5), R ａ represents a linear or branched alkyl or alkenyl group having 8 to 10 carbon atoms, AlkO represents a linear or branched alkyleneoxy group having 2 to 4 carbon atoms, m is the number of alkyleneoxy groups and is an average number of 0.5 to 3.5, R ｂ represents a hydrogen atom or a methyl group. Component (D-2) Polyoxypropylene polyglyceryl ether

2. A hair wash kit as described in claim 1, wherein the hair wash composition is for refill packaging or is filled into the foam dispensing container.

3. A hair washing kit as described in claim 1 or 2, wherein the foam dispensing container is a non-gas type foam dispensing container.

4. A hair wash kit described in any one of claims 1 to 3, wherein the hair wash composition further contains polypropylene glycol as a component (E-1).

5. The hair wash kit according to any one of claims 1 to 4, wherein the content of the component (A) in the hair wash composition is 5% by mass or more and 25% by mass or less, based on the total mass of the hair wash composition.

6. The hair wash kit according to any one of claims 1 to 5, wherein the component (A) further comprises one or more surfactants selected from the group consisting of cationic surfactants, nonionic surfactants, and amphoteric surfactants.

7. The hair wash kit according to any one of claims 1 to 6, wherein the content of the component (B) in the hair wash composition is 0.01% by mass or more and 1% by mass or less, based on the total mass of the hair wash composition.

8. A hair wash kit described in any one of claims 1 to 7, wherein the content of component (B) in the hair wash composition is 0.03 mass% or more and 0.25 mass% or less relative to the total hair wash composition.

9. The hair wash kit according to any one of claims 1 to 8, wherein the component (B) comprises one or more cationic polymers selected from the group consisting of cationic guar gum, PPG-2 hydroxypropyltrimonium cellulose, cationic galactomannan, cationic starch, polyquaternium-6, polyquaternium-7, polyquaternium-10, polyquaternium-22 and polyquaternium-52.

10. The hair wash kit according to any one of claims 1 to 9, wherein the component (C) is represented by the following general formula (4): R ４ -O-R ５ (4) [In the above general formula (4), R ４ and R ５ may be the same or different, and each independently represents a linear or branched alkyl group having 3 to 18 carbon atoms.

11. A hair wash kit described in any one of claims 1 to 10, wherein the mass ratio of the content of the anionic surfactant to the content of component (A) in the hair wash composition ((anionic surfactant) / (A)) is 0.25 or more and 1 or less.

12. The hair wash kit according to any one of claims 1 to 10, wherein the component (A) further comprises a nonionic surfactant and an amphoteric surfactant.

13. A hair wash kit described in any one of claims 1 to 12, wherein the mass ratio ((C) / (B)) of the content of component (C) to the content of component (B) in the hair wash composition is 3 or more and 30 or less.

14. A method for washing hair, comprising discharging the hair wash composition from a foam-discharging container, applying the composition to hair, and rinsing the composition off using the hair wash kit according to any one of claims 1 to 13.

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