Hair treatment agent, multi-agent type hair treatment agent, and hair treatment method

Abstract

To provide a hair treatment agent capable of flexibly changing the quality of hair and excellent in spreadability, resistance to dripping, and preparation stability, and to provide a multi-agent type hair treatment agent and a hair treatment method.SOLUTION: The hair treatment agent comprises: an ingredient (A) which is at least one selected from the group consisting of a1: heterocyclic compounds having sulfonyl group-constituting S atoms in the ring skeleton or salts thereof, a2: steviol glycosides or derivatives thereof, a3: fructans or derivatives thereof, and a4: aromatic sulfonic acids or salts thereof; and an ingredient (B) which is an anionic surfactant. The multi-agent type hair treatment agent comprises two or more hair treatment agents and includes the hair treatment agent. The method for using the multi-agent type hair treatment agent includes a first agent applying step, a first agent removing step, and a second agent applying step.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a hair treatment agent, a multi-component hair treatment agent, and a hair treatment method, and more particularly to a hair treatment agent, a multi-component hair treatment agent, and a hair treatment method that change hair quality. [Background technology]

[0002] When applying a chemical to hair or for the purpose of improving the penetration of the active ingredient, it may be necessary to temporarily soften the hair as desired. Patent Document 1 listed below is known as a technique for changing hair quality as needed in this way. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-132191 Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned Patent Document 1 discloses a hair cosmetic composition having a pH of 2 to 8 at 25°C, which contains 0.1 to 20% by mass of component (a), which is a specific aromatic sulfone compound represented by formula (1), and 0.01 to 5% by mass of component (b), which is carnitine or a salt thereof, and which has an objective of providing a hair cosmetic composition and a hair softening method that can reduce the elasticity of each individual hair strand to soften it and improve the inherently stiff feel of thick Asian hair and the deterioration of feel due to hair damage (paragraph

[0007] ).

[0005] However, for hair cosmetics intended to achieve such effects, hair application performance is important, and it was found that the formulation disclosed in Patent Document 1 had problems in terms of ease of spreading when applied to hair, resistance to dripping, etc. Furthermore, it was found that there were problems from the viewpoint of formulation stability.

[0006] The present invention has been made in view of the above-mentioned circumstances, and aims to provide a hair treatment agent, a multi-component hair treatment agent, and a hair treatment method that can flexibly change hair quality, and that is easy to apply and does not drip easily, and has excellent formulation stability. [Means for solving the problem]

[0007] The present invention includes the following: [1] A hair treatment agent comprising the following (A) and (B): (A): At least one selected from the group consisting of the following a1 to a4: a1: a heterocyclic compound or a salt thereof having a sulfonyl group-constituting S atom in the ring skeleton a2: steviol glycoside or its derivative a3: fructan or its derivative a4: Aromatic sulfonic acid or its salt (B): Anionic surfactant [2] The content of (A) is C A The content of (B) is expressed as C B When expressed as mass%, the ratio of these (C A / C B ) is 0.1 to 40. [3] The content of (A) is C A When expressed as mass%, C A The hair treatment agent according to the above [1] or [2], wherein the amount of the hydroxybenzoates is 1% by mass or more. [4] The hair treatment agent according to any one of [1] to [3] above, which further comprises the following (C): (C): Nonionic surfactant [5] The hair treatment agent according to any one of [1] to [4] above, which further comprises the following (D): (D): At least one selected from the group consisting of d1 and d2 below d1: Anionic polymer d2: Nonionic polymer [6] The hair treatment agent according to any one of [1] to [5] above, which has a viscosity of 5,000 mPa s or more when measured using a B-type viscometer equipped with a No. 4 rotor at a temperature of 25°C, a rotation speed of 12 rpm, and a measurement time of 60 seconds. [7] The content of (B) is C B The content of (C) is expressed as C C When expressed as mass%, the ratio of these (C B / C C ) is 0.25 to 2. [8] A multi-component hair treatment agent comprising two or more hair treatment agents, A multi-component hair treatment composition comprising the hair treatment composition according to any one of [1] to [7] above. [9] A method for using a multi-component hair treatment agent comprising multiple hair treatment agents including the following first agent and the following second agent, a first agent application step of applying the first agent to hair; a first agent removal step of removing the first agent from the hair that has been subjected to the first agent application step; A method for using a multi-component hair treatment agent, comprising a second-component application step of applying the second component to hair that has undergone the first-component removal step. First agent: the hair treatment agent according to any one of [1] to [7] above Second agent: A hair treatment agent whose viscosity, measured using a B-type viscometer equipped with a No. 3 rotor at a temperature of 25°C, a rotation speed of 12 rpm, and a measurement time of 60 seconds, is less than 5,000 mPa·s. [Effects of the Invention]

[0008] The hair treatment composition of the present invention is easy to apply, does not drip easily, and has excellent formulation stability. The multi-component hair treatment composition of the present invention is easy to apply, does not drip easily, and has excellent formulation stability. According to the hair treatment method of the present invention, the composition is easy to spread, does not drip easily, and has excellent formulation stability. DETAILED DESCRIPTION OF THE INVENTION

[0009] The present invention will be described in detail below. Unless otherwise specified, "%" means "% by mass", "parts" means "parts by mass", and the notation "X to Y" means "at least X and at most Y". In addition, for the names of some compounds, names based on the Japan Cosmetic Industry Association's ingredient labeling list or INCI (International Nomenclature of Cosmetic Ingredients) will be used. Furthermore, in the names of some compounds, polyoxyalkylene chains are sometimes abbreviated as "POE" for polyoxyethylene chains and "POP" for polyoxypropylene chains. The numbers in parentheses following these abbreviations indicate the number of moles added. Furthermore, (meth)acrylic acid refers to acrylic acid or methacrylic acid.

[0010] [1] Hair treatment agent The hair treatment agent of the present invention contains A (hereinafter also referred to as "component A") and B (hereinafter also referred to as "component B").

[0011] (1) Component A (components a1 to a4) Component A is at least one selected from the group consisting of the following a1 to a4 (hereinafter also referred to as "component a1," "component a2," "component a3," and "component a4"). a1: a heterocyclic compound or a salt thereof having a sulfonyl group-constituting S atom in the ring skeleton a2: steviol glycoside or its derivative a3: fructan or its derivative a4: Aromatic sulfonic acid or its salt

[0012] (1-1) Component a1 Component a1 includes heterocyclic compounds having a sulfonyl group-constituting S atom in the ring skeleton and salts thereof. These may be used alone or in combination of two or more. In the heterocyclic compound, the sulfur atom constituting the sulfonyl group (-SO2-) forms the ring skeleton of the heterocycle. One heterocycle may have two or more sulfonyl groups forming the ring skeleton, but usually has one. The heterocyclic ring may be any number of members, but is usually a 4- to 8-membered ring, and more preferably a 4- to 6-membered ring. Furthermore, the heterocycle may have other heteroatoms constituting the ring skeleton in addition to the S atom derived from the sulfonyl group. When the heterocyclic skeleton contains other heteroatoms, the other heteroatoms may be nitrogen atoms (N atoms), oxygen atoms (O atoms), or the like.

[0013] When the heterocyclic skeleton has an N atom as another heteroatom, the N atom can form, for example, an amino group (secondary amino group, tertiary amino group), an amide bond, etc., while constituting the heterocyclic skeleton. In the heterocyclic skeleton, the S atom constituting the sulfonyl group and another heteroatom may be bonded via a carbon atom, or the heteroatoms may be bonded to each other without a carbon atom (for example, a sulfonyl group and an amino group may be adjacent to each other). Furthermore, as the other heteroatom constituting the heterocyclic skeleton, a nitrogen atom is more preferable.

[0014] Examples of such heterocyclic skeletons include a sultam ring and an acesulfame ring. More specifically, compounds having such a heterocyclic skeleton include saccharin, saccharin salts, acesulfame, and acesulfame salts. Examples of cations constituting the salts (saccharin salts, acesulfame salts) include alkali metal ions such as Na, K, and Li, and ammonium ions (-NH3), etc. These may be used alone or in combination of two or more. Among these, saccharin and / or saccharin salts are more preferred than acesulfame and its salts in view of their easier utilization in an alkaline environment.

[0015] (1-2) Component a2 Component a2 includes steviol glycosides and derivatives thereof. These may be used alone or in combination of two or more. Examples of steviol glycosides include stevioside, rebaudiosides (rebaudioside A, B, C, D, E, F, etc.), dulcosides (dulcoside A, B, etc.), rubusoside, steviolmonoside, steviolbioside, etc. These may be used alone or in combination of two or more. A derivative of steviol glycoside refers to a steviol glycoside with a modified structure, and specifically includes compounds in which at least one of the substituents (e.g., a hydroxyl group) of a steviol glycoside has been replaced with another substituent. Examples of the other substituent include a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, an amino group, and a cyano group. These may be used alone or in combination of two or more. Furthermore, component a2 also includes salts of steviol glycosides and salts of steviol glycoside derivatives. Examples of cations constituting the salts include alkali metal ions such as Na, K, and Li, and ammonium ions (-NH). These cations may be used alone or in combination of two or more. As component a2, a specific one of the various steviol glycosides mentioned above may be used, but a stevia extract containing multiple types of steviol glycosides can also be used.

[0016] (1-3) Component a3 Component a3 includes fructan and its derivatives, which may be used alone or in combination of two or more. Fructans are polysaccharides in the form of polymerized fructose. In addition to fructose, fructans can have glucose at their terminals. Examples of fructans include inulin-type fructans, levan-type fructans, and branched fructans. These may be used alone or in combination of two or more. Among these, an example of an inulin-type fructan is inulin. An example of a levan-type fructan is levan. Furthermore, an example of a branched fructan is graminan.

[0017] The fructan derivative means a fructan with a structural change, and specifically includes a compound in which at least one of the substituents (e.g., hydroxyl group) of the fructan is replaced with another substituent. Examples of the other substituent include a hydrogen atom, a halogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, an amino group, and a cyano group. These may be used alone or in combination of two or more. Furthermore, fructan salts and salts of fructan derivatives are also included in component a3. Examples of cations constituting the salts include alkali metal ions such as Na, K, and Li, and ammonium ions (-NH3). These may be used alone or in combination of two or more. As component a3, inulin-type fructan and / or branched fructan are preferred, and inulin-type fructan is more preferred, with inulin being more preferred.

[0018] (1-4) Component a4 Component a4 includes aromatic sulfonic acids and salts thereof, which may be used alone or in combination of two or more. Among these, aromatic sulfonic acids are compounds having an aromatic ring and a sulfonic acid group, and include benzenesulfonic acid (4-aminobenzenesulfonic acid, etc.); toluenesulfonic acid (paratoluenesulfonic acid, orthotoluenesulfonic acid, metatoluenesulfonic acid, etc.); xylenesulfonic acid (2,3-xylenesulfonic acid, 2,4-xylenesulfonic acid, 2,5-xylenesulfonic acid (2,5-dimethylbenzenesulfonic acid, etc.), 2,6-xylenesulfonic acid, etc.); hydroxymethoxybenzophenonesulfonic acid; dihydroxydimethoxybenzophenonesulfonic acid; oxybenzenesulfonic acids (alkano hydroxybenzenesulfonic acid, etc.); guaiazulene sulfonic acid; chromotropic acid; indene sulfonic acid; naphthalenesulfonic acid (1-naphthalenesulfonic acid, 2-naphthalenesulfonic acid, etc.); naphthalene disulfonic acid (2,7-naphthalene disulfonic acid, 1,5-naphthalene disulfonic acid, 2,6-naphthalene disulfonic acid, naphthalene sulfonic acid formalin polycondensate, etc.); 1-amino-8-naphthol-3,6-disulfonic acid (H acid, etc.); tetrahydronaphthalenesulfonic acid; 6-tetralinsulfonic acid (1-methyl-4-butyl-6-tetralinsulfonic acid, etc.). These may be used alone or in combination of two or more. Furthermore, salts of aromatic sulfonic acids are also included in component a4. Examples of cations constituting the salts include alkali metal ions such as Na, K, and Li, and ammonium ions (-NH3). These may be used alone or in combination of two or more. Of the above compounds, paratoluenesulfonates (particularly sodium paratoluenesulfonate) are preferred as component a4.

[0019] Among these components (A), in the present invention, component (a1) is preferred from the viewpoint of being able to change the hair quality more flexibly, and furthermore, a compound having a sultam ring skeleton and / or a compound having an acesulfame ring skeleton is preferred, furthermore, a compound having a sultam ring skeleton is preferred, and furthermore, saccharin and / or a saccharin salt is preferred.

[0020] It is believed that the use of ingredient A can produce a hair treatment agent that can flexibly change hair texture. While the reason for this is unclear, ingredient A is thought to have at least one of the following effects: weakening, loosening, or severing ionic and hydrophobic bonds within the hair. On the other hand, it is thought that it does not have a strong enough effect to sever covalent bonds such as S-S bonds (disulfide bonds). These effects share the common features of having hydrophobic and hydrophilic parts in the compound structure and being large enough to easily penetrate the interior of the hair. Among the ingredients A, the most effective effect can be achieved when ingredient a1, in particular, is used.

[0021] The content of Component A is not limited, but when the entire hair treatment agent is taken as 100% by mass, the content of Component A is C A When expressed as mass%, the lower limit is preferably 0.1 mass% or more, more preferably 1 mass% or more, even more preferably 3 mass% or more, even more preferably 5 mass% or more, and even more preferably 7 mass% or more. A The upper limit of the mass % is preferably 50 mass % or less, more preferably 40 mass % or less, more preferably 30 mass % or less, more preferably 20 mass % or less, and even more preferably 15 mass % or less. These upper and lower limits can be arbitrarily combined, but are preferably 0.1 to 50 mass %, more preferably 1 to 40 mass %, more preferably 3 to 30 mass %, more preferably 5 to 20 mass %, and even more preferably 7 to 15 mass %.

[0022] (2) Component B (anionic surfactant) Component B is an anionic surfactant. By using component (A) in combination with the anionic surfactant component (B), it is possible to suppress the destabilization of the formulation caused by the inclusion of component (A) and improve the formulation stability of the entire formulation. In addition, it is possible to improve the ease of application of the formulation itself while also reducing dripping.

[0023] Examples of anionic surfactants include sulfate esters and their salts, POE alkyl ether sulfates and their salts, sulfonic acids and their salts, phosphate esters and their salts, POE alkyl ether phosphoric acids and their salts, POE alkyl ether acetates and their salts, fatty acids (saturated or unsaturated) and their salts, higher fatty acids (lauric acid, palmitic acid, stearic acid, isostearic acid, myristic acid, etc.) and their salts, acylamino acids and their salts, acylmethyltaurine and its salts, sulfosuccinate esters and their salts, α-olefin sulfonic acids and their salts, α-sulfonic fatty acids and their salts, α-sulfofatty acid methyl esters and their salts, acylisethionate and its salts, diacylglutamic acid lysine (dilauroylglutamic acid lysine, etc.) and its salts, etc. These may be used alone or in combination of two or more.

[0024] Furthermore, examples of counter ions of the anionic groups of the above-mentioned anionic surfactants include alkali metal ions (Li ion, Na ion, K ion, etc.), alkaline earth metal ions (Mg ion, Ca ion, etc.), ammonium ions, amine compound ions (monoethanolamine ion, diethanolamine ion, triethanolamine ion, monoisopropanolamine ion, etc.), ions of basic amino acids such as arginine, histidine, lysine, etc. These may be used alone or in combination of two or more.

[0025] Among the above, examples of sulfate esters and salts thereof include alkyl sulfates and salts thereof, alkyl ether sulfates and salts thereof, and alkenyl ether sulfates and salts thereof. These may be used alone or in combination of two or more. Specific examples include lauryl sulfate, cetyl sulfate, myristyl sulfate, stearyl sulfate, hydrogenated coconut oil fatty acid glyceryl sulfate, higher fatty acid alkanolamide sulfate esters, fatty acid soaps, sulfated castor oil, and salts thereof. These may be used alone or in combination of two or more.

[0026] Among the above, examples of POE alkyl ether sulfates and salts thereof include POE lauryl ether sulfate, POE alkyl (12,13) ​​ether sulfate, POE alkyl (11,15) ether sulfate, POE stearyl ether sulfate, and salts thereof. These may be used alone or in combination of two or more. The average number of moles of POE added is not limited, but may be 1 to 4 moles, or may be 2 to 3 moles.

[0027] Among the above, examples of sulfonic acids and salts thereof include alkylsulfonic acids, alkenylsulfonic acids (such as tetradecenesulfonic acid), alkylbenzenesulfonic acids (such as dodecylbenzenesulfonic acid), α-olefinsulfonic acids, higher fatty acid ester sulfonic acids, and salts thereof. These may be used alone or in combination of two or more.

[0028] Among the above, examples of the phosphate esters (phosphate monoesters, phosphate diesters) and salts thereof include alkyl phosphate esters (lauryl phosphate, monomyristyl phosphate, monostearyl phosphate, di(C12-15)paleth-8-phosphate, etc.) and salts thereof. These may be used alone or in combination of two or more.

[0029] Among the above, POE alkyl ether phosphates and salts thereof include POE lauryl ether phosphate, POE oleyl ether phosphate, POE cetyl ether phosphate, POE stearyl ether phosphate, etc., and salts thereof. These may be used alone or in combination of two or more. The average number of moles of POE added is not limited, but may be 1 to 4 moles, or may be 2 to 3 moles.

[0030] Among the above, POE alkyl ether acetic acid and its salts include POE lauryl ether acetic acid and its salts. These may be used alone or in combination of two or more. The average number of moles of POE added is not limited, but may be 1 to 4 moles, or may be 2 to 3 moles.

[0031] Among the above, fatty acids (saturated or unsaturated) and their salts, and higher fatty acids (lauric acid, palmitic acid, stearic acid, isostearic acid, myristic acid, etc.) and their salts can be mentioned. These can be used alone or in combination of two or more. The number of carbon atoms in these fatty acids is not limited, but can be, for example, 12 to 24 carbon atoms.

[0032] Among the above, examples of acylamino acids and salts thereof include acylglutamic acid, acylalanine, acylsarcosine, acylglycine, acylthreonine, and salts thereof. These may be used alone or in combination of two or more. Among these, examples of acylglutamic acids include acylglutamic acids such as lauroylglutamic acid, stearoylglutamic acid, myristoylglutamic acid, and palmitoylglutamic acid, palm fatty acid glutamic acid, and the like. Examples of acylalanines include lauroylmethylalanine, myristoylalanine, and coconut oil fatty acid acylalanine. Examples of acylsarcosines include lauroylsarcosine, and the like. Examples of acylglycines include lauroylethylglycine, and the like. These may be used alone or in combination of two or more.

[0033] Among the above, examples of acyl methyl taurine and salts thereof include myristoyl methyl taurine, lauroyl methyl taurine, stearoyl methyl taurine, coconut oil fatty acid methyl taurine, and salts thereof. These may be used alone or in combination of two or more.

[0034] Among the above, examples of sulfosuccinate esters and salts thereof include lauryl sulfosuccinate, lauryl sulfosuccinate disalt, di-2-ethylhexyl sulfosuccinate, and salts thereof. These may be used alone or in combination of two or more.

[0035] Among these anionic surfactants, in the present invention, sulfate esters and salts thereof are preferred from the viewpoint of more effectively improving the formulation stability of the entire agent, and those having an alcohol ester structure having 12 to 18 carbon atoms are more preferred, with cetyl sulfate and salts thereof being particularly preferred.

[0036] The content of component B is not limited, but when the entire hair treatment agent is taken as 100% by mass, the content of component B is C B When expressed as mass%, the lower limit is preferably 0.01 mass% or more, more preferably 0.1 mass% or more, even more preferably 0.5 mass% or more, even more preferably 0.8 mass% or more, and even more preferably 1.2 mass% or more. B The upper limit of the mass % is preferably 10 mass % or less, more preferably 7 mass % or less, more preferably 5 mass % or less, more preferably 3 mass % or less, and even more preferably 2 mass % or less. These upper and lower limits can be arbitrarily combined, but are preferably 0.01 to 10 mass %, more preferably 0.1 to 7 mass %, more preferably 0.5 to 5 mass %, more preferably 0.8 to 3 mass %, and even more preferably 1.2 to 2 mass %.

[0037] (3) Amount ratio of component A to component B As mentioned above, the content of component A when the entire hair treatment agent is taken as 100% by mass is C A The content of component B is expressed as C% by mass, and the content of component B when the entire hair treatment agent is taken as 100% by mass is expressed as C B When expressed as mass%, the ratio of these (C A / C B) is not limited, but from the viewpoint of simultaneously achieving each effect, the lower limit is preferably 0.1 or more, more preferably 0.5 or more, more preferably 1 or more, more preferably 1.5 or more, more preferably 3 or more, more preferably 4 or more, and even more preferably 5 or more. On the other hand, from the viewpoint of simultaneously achieving each effect, the upper limit is preferably 40 or less, more preferably 30 or less, more preferably 20 or less, more preferably 15 or less, more preferably 13 or less, more preferably 11 or less, and even more preferably 9.5 or less. These upper and lower limit values ​​can be arbitrarily combined, but are preferably 0.1 to 40, more preferably 0.5 to 30, more preferably 1 to 20, more preferably 1.5 to 15, more preferably 3 to 13, more preferably 4 to 11, and even more preferably 5 to 9.5.

[0038] (4) Component C (nonionic surfactant) Component C is a nonionic surfactant. By adding component (C), the formulation stability of the present hair treatment agent can be more effectively improved. Examples of nonionic surfactants include ether-type nonionic surfactants, ester-type nonionic surfactants, glucosides, etc. These may be used alone or in combination of two or more.

[0039] Among the above, examples of the ether-type nonionic surfactants include POE oleyl ether (oleth), POE stearyl ether (steareth), POE cetyl ether (ceteth), POE oleyl cetyl ether (cetoless), POE behenyl ether (beheneth), POE lauryl ether (laureth), POE myristyl ether, POE octyldodecyl ether, POE hexyldecyl ether, POE isostearyl ether, POE nonylphenyl ether, POE octylphenyl ether, POE polyoxypropylene cetyl ether, POE polyoxypropylene decyltetradecyl ether, etc. These may be used alone or in combination of two or more.

[0040] Among the above, examples of oleths include POE (2) oleyl ether, POE (3) oleyl ether, POE (7) oleyl ether, POE (10) oleyl ether, POE (15) oleyl ether, POE (20) oleyl ether, POE (50) oleyl ether, etc. These may be used alone or in combination of two or more.

[0041] Among the above, examples of stearyl ether include POE (2) stearyl ether, POE (4) stearyl ether, POE (5) stearyl ether, POE (20) stearyl ether, POE (150) stearyl ether, etc. These may be used alone or in combination of two or more.

[0042] Among the above, examples of ceteth include POE (2) cetyl ether, POE (4) cetyl ether, POE (5) cetyl ether, POE (5.5) cetyl ether, POE (6) cetyl ether, POE (7) cetyl ether, POE (10) cetyl ether, POE (15) cetyl ether, POE (20) cetyl ether, POE (23) cetyl ether, POE (25) cetyl ether, POE (30) cetyl ether, POE (40) cetyl ether, etc. These may be used alone or in combination of two or more.

[0043] Among the above, examples of behenes include POE (2) behenyl ether, POE (3) behenyl ether, POE (5) behenyl ether, POE (6) behenyl ether, POE (10) behenyl ether, POE (20) behenyl ether, POE (30) behenyl ether, POE (150) behenyl ether, etc. These may be used alone or in combination of two or more.

[0044] Among the above, examples of laureth include POE (2) lauryl ether, POE (3) lauryl ether, POE (4.2) lauryl ether, POE (9) lauryl ether, POE (10) lauryl ether, POE (21) lauryl ether, POE (25) lauryl ether, etc. These may be used alone or in combination of two or more.

[0045] Among the above, examples of POE myristyl ether include POE(2) myristyl ether, POE(3) myristyl ether, etc. These may be used alone or in combination of two or more. Among the above, examples of POE octyldodecyl ether include POE(2) octyldodecyl ether, POE(5) octyldodecyl ether, etc. These may be used alone or in combination of two or more. Among the above, examples of POE hexyldecyl ether include POE(2) hexyldecyl ether, POE(4) hexyldecyl ether, etc. These may be used alone or in combination of two or more.

[0046] Among the above, examples of the POE isostearyl ether include POE(5) isostearyl ether, etc. These may be used alone or in combination of two or more. Among the above, examples of POE polyoxypropylene cetyl ether include POE(10)POP(4) cetyl ether, POE(20)POP(4) cetyl ether, POE(20)POP(8) cetyl ether, POE(1)POP(4) cetyl ether, etc. These may be used alone or in combination of two or more. Among the above, examples of POE polyoxypropylene decyl tetradecyl ether include POE(12)POP(6)decyl tetradecyl ether, etc. These may be used alone or in combination of two or more.

[0047] Among the above, examples of ester-type nonionic surfactants include POE sorbitan fatty acid esters, glyceryl monofatty acid esters, POE sorbitol fatty acid esters, sorbitol beeswax (POE (6) POE sorbitol beeswax, etc.), polyethylene glycol monooleate, polyethylene glycol monostearate, polyethylene glycol monolaurate, lipophilic glycerin monooleate, lipophilic glycerin monostearate, self-emulsifying glycerin monostearate, sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, sorbitan monostearate, sorbitan monopalmitate, sorbitan monolaurate, sucrose fatty acid esters, decaglyceryl monolaurate, decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monomyristate, and POE reduced lanolin. These may be used alone or in combination of two or more.

[0048] Among the above, examples of the POE sorbitan fatty acid ester include POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, and POE sorbitan trioleate. These may be used alone or in combination of two or more. The number of moles of POE added in these may be, for example, 5 or more. Among the above, examples of glyceryl mono-fatty acid esters include POE glycerol monostearate and POE glycerol monomyristate. These may be used alone or in combination of two or more. The number of moles of POE added in these may be, for example, 5 or more. Among the above, examples of the POE sorbitol fatty acid ester include POE sorbitol tetraoleate, POE sorbitol hexastearate, and POE sorbitol monolaurate. These may be used alone or in combination of two or more. The number of moles of POE added in these may be, for example, 6 or more.

[0049] Among these nonionic surfactants, in the present invention, it is preferable to include an ether-type nonionic surfactant from the viewpoint of obtaining better emulsion stability. Furthermore, when an ether-type nonionic surfactant is contained, the hydrocarbon constituting the hydrophobic group thereof may be saturated or unsaturated, and may be a straight chain or a branched chain. Among these, examples of those in which the hydrophobic group is a saturated hydrocarbon include steareth, ceteth, beheneth, laureth, POE myristyl ether, POE octyldodecyl ether, POE hexyldecyl ether, POE isostearyl ether, POE polyoxypropylene cetyl ether, and POE polyoxypropylene decyltetradecyl ether. These may be used alone or in combination of two or more. Among these, those in which the hydrophobic group is linear are preferred. That is, at least one of steareth, ceteth, beheneth, laureth, POE myristyl ether, and POE isostearyl ether is preferred, and among these, at least one of steareth, ceteth, beheneth, and laureth is preferred, with steareth and / or ceteth being more preferred.

[0050] Furthermore, examples of the ether-type nonionic surfactants whose hydrophobic group is an unsaturated hydrocarbon include oleth and cetoleth, among those mentioned above. These may be used alone or in combination of two or more. Among these, oleth is preferred. Furthermore, examples of the ether-type nonionic surfactants in which the hydrophobic group is a hydrocarbon having a branched chain include, among those mentioned above, POE octyldodecyl ether, POE hexyldecyl ether, POE isostearyl ether, POE polyoxypropylene decyl tetradecyl ether, etc. These may be used alone or in combination of two or more.

[0051] Among the various ether-type nonionic surfactants mentioned above, those in which the hydrophobic group is an unsaturated hydrocarbon and / or those in which the hydrophobic group is a branched hydrocarbon are preferred, and among these, those in which the hydrophobic group is an unsaturated hydrocarbon are more preferred. That is, oleth and / or cetoleth are preferred, and oleth is particularly preferred. Furthermore, as mentioned above, examples of oleth include POE (2) oleyl ether, POE (3) oleyl ether, POE (7) oleyl ether, POE (10) oleyl ether, POE (15) oleyl ether, POE (20) oleyl ether, and POE (50) oleyl ether. Among these, POE (2) oleyl ether, i.e., oleth-2, is preferred from the viewpoints of ease of application and suppression of dripping. When oleth-2 is included as component C, its content is not limited, but when the total amount of the hair treatment agent is taken as 100% by mass, from the viewpoint of ease of application, the lower limit is preferably 0.5% by mass or more, more preferably 0.6% by mass or more, and even more preferably 0.7% by mass or more. On the other hand, from the viewpoint of suppressing dripping and formulation stability, the upper limit is preferably 1.5% by mass or less, more preferably 1.4% by mass or less, and even more preferably 1.3% by mass or less. These upper and lower limits can be arbitrarily combined, but the range is preferably 0.5 to 1.5% by mass, more preferably 0.6 to 1.4% by mass, and even more preferably 0.7 to 1.3% by mass.

[0052] In the present invention, from the viewpoint of obtaining better emulsion stability, it is preferable to use two or more nonionic surfactants rather than only one. In particular, it is preferable to use two surfactants with different HLBs in combination, and more specifically, it is preferable to use two surfactants in combination, including a nonionic surfactant with an HLB of less than 10 and a nonionic surfactant with an HLB of 14 or more. Examples of nonionic surfactants with an HLB of less than 10 include oleth-2 (HLB=7.5) and steareth-2 (HLB=8). These may be used alone or in combination of two or more. On the other hand, examples of nonionic surfactants with an HLB of 14 or more include ceteth-30 (HLB=19.5). These may be used alone or in combination of two or more.

[0053] The HLB value (HLB value) indicates the degree of affinity of a surfactant for water and oil (water-insoluble organic compounds). The HLB value ranges from 0 to 20, with values ​​closer to 0 indicating higher lipophilicity and values ​​closer to 20 indicating higher hydrophilicity. The HLB value is measured according to "20·3·1 Measurement of HLB Value by Emulsification Method" (pp. 854-855) in the "Handbook - Cosmetics and Pharmaceutical Ingredients - Revised Edition (published February 1, 1977, Nikko Chemicals Co., Ltd.)." Hereinafter, this method will be used to measure the HLB value in this specification.

[0054] The content of Component C is not limited, but when the entire hair treatment agent is taken as 100% by mass, the lower limit is preferably 0.1% by mass or more, more preferably 1% by mass or more, and even more preferably 1.5% by mass or more. On the other hand, the upper limit is preferably 10% by mass or less, more preferably 5% by mass or less, and even more preferably 3.5% by mass or less. These upper and lower limits can be arbitrarily combined, but the range is preferably 0.1 to 10% by mass, more preferably 1.0 to 5% by mass, and even more preferably 1.5 to 3.5% by mass.

[0055] Furthermore, when the hair treatment agent contains two or more types of component C as described above, where the total amount of the hair treatment agent is 100% by mass, the content of the nonionic surfactant with an HLB of less than 10 is N1% by mass, and the content of the nonionic surfactant with an HLB of 14 or more is N2% by mass, the ratio (N1 / N2) is not limited, but from the viewpoints of preventing dripping and formulation stability, the lower limit is preferably 0.1 or more, more preferably 0.2 or more, and even more preferably 0.3 or more. On the other hand, from the viewpoint of ease of spreadability, the upper limit is preferably 7 or less, more preferably 5 or less, and even more preferably 3.5 or less. These upper and lower limits can be arbitrarily combined, but are preferably 0.1 to 7, more preferably 0.2 to 5, and even more preferably 0.3 to 3.5.

[0056] (5) Amount ratio of component B to component C As mentioned above, the content of component B when the entire hair treatment agent is taken as 100% by mass is C B The content of component C is expressed as C % by mass, where C is the content of component C when the entire hair treatment agent is taken as 100% by mass. C When expressed as mass%, the ratio of these (C B / C C ) is not limited, but its lower limit is preferably 0.25 or more, more preferably 0.3 or more, even more preferably 0.4 or more, and even more preferably 0.5 or more. On the other hand, its upper limit is preferably 2 or less, more preferably 1.6 or less, even more preferably 1.3 or less, and even more preferably 1.1 or less. These upper and lower limit values ​​can be arbitrarily combined, but are preferably 0.25 to 2, more preferably 0.3 to 1.6, even more preferably 0.4 to 1.3, and even more preferably 0.5 to 1.1.

[0057] (6) Component D (component d1 and component d2) (6-1) Component d1 Component d1 is an anionic polymer. Examples of the anionic polymer include polysaccharide-based anionic polymers, protein anionic polymers, and polymers of acidic vinyl monomers or salts thereof. These may be used alone or in combination of two or more.

[0058] Among the above, examples of polysaccharide-based anionic polymers include xanthan gum, carrageenan, sodium alginate, gum arabic, pectin, etc. These may be used alone or in combination of two or more.

[0059] Among the above, examples of the protein anionic polymer include animal proteins, vegetable proteins, hydrolyzed proteins, etc. These may be used alone or in combination of two or more. Among the above, examples of animal proteins include keratin, collagen, silk, conchiolin, elastin, fibroin, casein, gelatin, etc. These may be used alone or in combination of two or more. Among the above, examples of vegetable proteins include those derived from plants such as soybeans, wheat, barley, oats, almonds (including almond seeds, etc.), corn, rice (including rice germ, rice bran, etc.), potatoes, etc. These may be used alone or in combination of two or more. Among the above, hydrolyzed proteins include hydrolyzed animal proteins and / or vegetable proteins, etc. These may be used alone or in combination of two or more.

[0060] Among the above, with regard to the polymer (including homopolymer and copolymer) of an acidic vinyl monomer or a salt thereof, the acidic vinyl monomer is a compound having an acidic group and a polymerizable vinyl group. Among these, examples of the acidic group include a carboxyl group, a sulfonic acid group, and a phosphoric acid group. These may be used alone or in combination of two or more. Specific examples include acrylic acid, methacrylic acid, crotonic acid, vinylbenzoic acid, 2-acrylamido-2-methylpropanesulfonic acid, styrenesulfonic acid, vinylsulfonic acid, allylsulfonic acid, methacrylic acid, 3-methacrylic propanesulfonic acid, itaconic acid, maleic acid, fumaric acid, etc. These may be used alone or in combination of two or more. Therefore, examples of polymers of acidic vinyl monomers or salts thereof include carboxyvinyl polymers, etc. These may be used alone or in combination of two or more. In addition to the acidic vinyl monomer, other monomers copolymerizable with the acidic vinyl monomer can be used in the polymer of the acidic vinyl monomer or its salt. When other monomers are used, their content is preferably 50 mol % or less of the total structural units constituting the resulting polymer.

[0061] The content of the anionic polymer is not limited, but is preferably 0.001 to 2% by mass, more preferably 0.01 to 1% by mass, and even more preferably 0.02 to 0.5% by mass, when the total amount of the hair treatment agent is taken as 100% by mass.

[0062] (6-2) Component d2 Component d2 is a nonionic polymer. Examples of nonionic polymers include polysaccharide-based nonionic polymers, alkylene glycol polymers, vinyl-based polymers, and other nonionic polymers. These may be used alone or in combination of two or more.

[0063] Among the above, examples of the polysaccharide-based nonionic polymer include hydroxyethyl cellulose, hydroxypropyl methyl cellulose, hydroxypropyl cellulose, methyl cellulose, dextrin, galactan, pullulan, etc. These may be used alone or in combination of two or more. Among the above, examples of the alkylene glycol polymer include polyethylene glycol (highly polymerized polyethylene glycol), etc. These may be used alone or in combination of two or more.

[0064] Among the above, examples of the vinyl polymer include polyvinyl alcohol, vinylpyrrolidone polymer, vinylpyrrolidone / vinyl acetate copolymer, vinylpyrrolidone / vinyl acetate / vinyl propionate copolymer (for example, BASF's trade name "Ruviscol"), etc. These may be used alone or in combination of two or more. Among the above, examples of polymers other than polysaccharide-based nonionic polymers, alkylene glycol polymers, and vinyl-based polymers include dimethylhydantoin formaldehyde resins, poly(meth)acrylic acid esters, (meth)acrylic acid ester copolymers, poly(meth)acrylamides, (meth)acrylic acid amide copolymers, etc. These may be used alone or in combination of two or more.

[0065] The content of the nonionic polymer is not limited, but is preferably 0.001 to 2% by mass, more preferably 0.01 to 1% by mass, and even more preferably 0.02 to 0.5% by mass, when the total amount of the hair treatment agent is taken as 100% by mass.

[0066] (7) Other ingredients The present hair treatment agent does not necessarily contain any other components than the above-mentioned components A to D, but may contain other components as necessary. When other components are contained, the content is preferably 99% by mass or less, and can be 98% by mass or less, or even 97% by mass or less, when the entire hair treatment agent is taken as 100% by mass. The lower limit is not limited, but can be, for example, 50% by mass or more, further 65% by mass or more, or even 80% by mass or more. Specifically, the content of other components relative to the entire hair treatment agent can be 50 to 99% by mass, 65 to 98% by mass, or 80 to 97% by mass.

[0067] Other ingredients include solubilizers, oily ingredients (other than ingredient D), alkaline agents, pH adjusters (including buffers), stabilizers, antioxidants, preservatives, plant extracts, etc. These may be used alone or in combination of two or more.

[0068] (7-1) Solubilizer Examples of the solubilizing agent include water, alcohol, ether, etc. These may be used alone or in combination of two or more. When water is blended as a solubilizing agent, the amount is not limited, and when the entire hair treatment agent is taken as 100% by mass, the amount can be 15% by mass or more, 30% by mass or more, or 60% by mass or more. It can also be 99% by mass or less, 95% by mass or less, or 90% by mass or less. These upper and lower limits can be arbitrarily combined, and can be 15 to 99% by mass, 30 to 95% by mass, or 60 to 90% by mass.

[0069] Examples of alcohols include monohydric alcohols, polyhydric alcohols (excluding PAG structure-containing polymers), ether alcohols, etc. These may be used alone or in combination of two or more. Examples of monohydric alcohols include aliphatic alcohols having 5 or less carbon atoms, such as ethanol, n-propanol, and isopropanol; aromatic alcohols, such as benzyl alcohol, 2-phenylethyl alcohol, phenylpropanol, and phenylglycol; etc. These may be used alone or in combination of two or more.

[0070] The polyhydric alcohol is preferably a dihydric to hexahydric polyhydric alcohol, and more preferably a polyhydric alcohol having 2 to 6 carbon atoms. Specific examples include alkanediols, alkanetriols, and oxydialkanols. Among these, examples of alkanediols include ethanediol, propanediol, butanediol, and pentanediol. Examples of ethanediols include ethylene glycol. Examples of propanediols include propane-1,2-diol (propylene glycol) and trimethylene glycol. Examples of pentanediols include isopentyldiol. Examples of alkanetriols include glycerin, butanetriol, pentanetriol, and 1,3-butylene glycol (BG). Examples of oxydialkanols include oxydiethanol and oxydipropanol. Other examples include dipropylene glycol (DPG). These may be used alone or in combination of two or more. Examples of ether alcohols include ethoxydiglycol, methoxydiglycol, and diethylene glycol monobutyl ether. These may be used alone or in combination of two or more. Other examples include sorbitol.

[0071] (7-2) Oily components Examples of oily components include higher alcohols, hydrocarbons, fats and oils, waxes, esters, silicones, fluorine-containing oils, alkyl glyceryl ethers, etc. These may be used alone or in combination of two or more.

[0072] The higher alcohol may be an alcohol having a carbon chain with 5 or more carbon atoms. For example, higher alcohols having 5 to 40 carbon atoms are included. The skeleton may be saturated or unsaturated, and may be straight-chain or branched. Specific examples include cetearyl alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, arachyl alcohol, behenyl alcohol, hexyldecanol, isostearyl alcohol, octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, lanolin alcohol, phytosterol, cholesterol, and the like. These may be used alone or in combination of two or more. Among these, from the viewpoints of suppressing dripping and formulation stability, it is preferable that the higher alcohol contains a higher alcohol that is solid at room temperature (25°C), and from the viewpoint of ease of spreading, it is preferable that the higher alcohol contains a higher alcohol that is liquid at room temperature (25°C).And, from the viewpoint of simultaneously achieving all of these effects, it is preferable that the higher alcohol contains both a higher alcohol that is solid at room temperature (25°C) and a higher alcohol that is liquid at room temperature (25°C).Furthermore, among the above, as the higher alcohol that is liquid at room temperature (25°C), a higher alcohol having 5 to 20 carbon atoms is preferable, and octyldodecanol is particularly preferable.

[0073] Examples of hydrocarbons include liquid paraffin (mineral oil), liquid isoparaffin, paraffin (paraffin wax), olefin oligomer, polyisobutene, hydrogenated polyisobutene, synthetic squalane, squalane (hydrogenated squalene), polybutene, polyethylene (polyethylene wax), microcrystalline wax, petrolatum, ozokerite, ceresin, limonene, and turpentine. These may be used alone or in combination of two or more. Of these, liquid paraffin (mineral oil) is preferred.

[0074] Examples of fats and oils include vegetable oils (vegetable fats and oils), animal oils (animal fats and oils), and the like. Examples of vegetable oils include macadamia seed oil, meadowfoam oil, jojoba seed oil, rice germ oil, sunflower seed oil, olive oil, grape seed oil, almond oil, apricot kernel oil, peach kernel oil, persic oil, shea butter, rosehip oil, camellia oil, tea seed oil, sasanqua oil, Argania spinosa kernel oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, cocoa butter, corn oil, peanut oil, rapeseed oil, evening primrose oil, rice bran oil, rice germ oil, wheat germ oil, Job's tears oil, avocado oil, carrot oil, castor oil, linseed oil, coconut oil, and palm oil. Examples of animal oils include beef tallow, lard, mink oil, egg yolk oil, etc. These may be used alone or in combination of two or more.

[0075] Examples of waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, spermaceti, rice bran wax, sugarcane wax, palm wax, montan wax, cotton wax, bayberry wax, ivotaro wax, kapok wax, shellac wax, etc. These may be used alone or in combination of two or more.

[0076] Esters include diisopropyl adipate, diisobutyl adipate, dioctyl adipate, 2-hexyldecyl adipate, diisostearyl adipate, isopropyl myristate, cetyl octanoate, cetyl isooctanoate, isononyl isononanoate, isodecyl isononanoate, isotridecyl isononanoate, diisopropyl sebacate, octyldodecyl myristate, isopropyl palmitate, ethylhexyl palmitate, butyl stearate, stearyl stearate, hexyl laurate, and myristate. Examples include myristyl, decyl oleate, hexyldecyl dimethyloctanoate, triisodecyl myristate, isostearyl myristate, PPG-3 benzyl ether myristate, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, C10-30 fatty acids (cholesteryl / lanosteryl), lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cetyl caprate, diisostearyl malate, lanolin derivatives, etc. These may be used alone or in combination of two or more.

[0077] Examples of silicones (excluding amino-modified silicones) include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, highly polymerized silicones having an average degree of polymerization of 650 to 10,000, polyether-modified silicones, betaine-modified silicones, alkyl-modified silicones, alkoxy-modified silicones, mercapto-modified silicones, carboxy-modified silicones, and fluorine-modified silicones. These may be used alone or in combination of two or more.

[0078] When an oily component is blended, its amount is not limited, and when the entire hair treatment agent is taken as 100% by mass, it can be 1% by mass or more, 5% by mass or more, or 10% by mass or more. On the other hand, it can be 50% by mass or less, 35% by mass or less, or 20% by mass or more. These upper and lower limits can be combined arbitrarily, and can be, for example, 1 to 50% by mass, 5 to 35% by mass, or 10 to 20% by mass.

[0079] (7-3) Alkaline agent The alkaline agent is a component that exhibits alkalinity in the presence of water. Examples of the alkaline agent include organic bases, inorganic bases, and salts thereof. These may be used alone or in combination of two or more.

[0080] Among the above, examples of the organic base include organic amines, basic amino acids and salts thereof, and guanidine and salts thereof. Among the above, examples of the organic amine include alkanolamines such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, aminomethylpropanol (e.g., 2-amino-2-methyl-1-propanol), and aminomethylpropanediol (e.g., 2-amino-2-methyl-1,3-propanediol), and alkylamines such as monoethylamine and isopropylamine. These may be used alone or in combination of two or more. Among the above, examples of basic amino acids and salts thereof include arginine and salts thereof, lysine and salts thereof, histidine and salts thereof, etc. These may be used alone or in combination of two or more. Among the above, examples of guanidine and salts thereof include guanidine carbonate, etc. These may be used alone or in combination of two or more.

[0081] Among the above, examples of inorganic bases include hydroxides, chlorides, silicates, carbonates, hydrogencarbonates, metasilicates, phosphates, sulfates, ammonia, etc. Specific examples include alkali metal hydroxides such as sodium hydroxide, alkali metal carbonates such as sodium carbonate, alkali metal hydrogencarbonates such as sodium hydrogencarbonate, alkaline earth metal hydroxides such as magnesium hydroxide and calcium hydroxide, alkaline earth metal carbonates such as magnesium carbonate and calcium carbonate, and ammonium salts such as ammonium carbonate and ammonium hydrogencarbonate. These may be used alone or in combination of two or more.

[0082] Among these, from the viewpoint of the effect of improving the feel (and preventing hair damage), organic bases are preferred, and basic amino acids or salts thereof are more preferred. When an alkaline agent is added, its amount is not limited, and when the entire hair treatment agent is taken as 100% by mass, it can be 0.01% by mass or more, 0.1% by mass or more, or 0.3% by mass or more. On the other hand, it can be 10% by mass or less, 5% by mass or less, or 1.5% by mass or more. These upper and lower limits can be arbitrarily combined, and for example, it can be 0.01 to 10% by mass, 0.1 to 5% by mass, or 0.3 to 1.5% by mass.

[0083] (7-4) pH adjuster In the present hair treatment composition, the pH of the entire hair treatment composition can be adjusted by using a pH adjuster. The pH adjuster may be an inorganic compound (inorganic pH adjuster) or an organic compound (organic pH adjuster), or these may be used in combination. Among these, inorganic acids can be used as inorganic pH adjusters. Examples of inorganic acids include phosphoric acid, hydrochloric acid, sulfuric acid, and nitric acid. Also, organic acids can be used as organic pH adjusters. Examples of organic acids include citric acid and acetic acid. These can be used alone or in combination of two or more.

[0084] (7-5) Stabilizers Examples of stabilizers include phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, tannic acid, etc. These may be used alone or in combination of two or more.

[0085] (7-6) Antioxidants Examples of antioxidants include ascorbic acid (L-ascorbic acid), anhydrous sodium sulfite, etc. These may be used alone or in combination of two or more.

[0086] (7-7) Preservatives Examples of preservatives include phenoxyethanol, methylparaben, ethylparaben, propylparaben, isopropylparaben, butylparaben, isobutylparaben, sodium benzoate, etc. These may be used alone or in combination of two or more.

[0087] (7-8) Plant extracts Plant extracts include avocado extract, hydrangea extract, aloe extract, apricot extract, apricot kernel extract, ginkgo extract, fennel extract, turmeric extract, Scutellaria root extract, Phellodendron bark extract, St. John's wort extract, orange extract, zelkova extract, chamomile extract, licorice extract, gardenia extract, kumazasa extract, grapefruit extract, mulberry extract, cowberry extract, burdock extract, bamboo extract, hawthorn extract, Japanese pepper extract, mallow extract, rehmannia root extract, perilla extract, linden extract, peony extract, ginger extract, and shiitake mushroom extract. Examples include birch extract, horsetail extract, sage extract, hawthorn extract, thyme extract, tea extract, clove extract, houttuynia cordata extract, hibiscus extract, hamamelis extract, parsley extract, loquat extract, loofah extract, safflower extract, peppermint extract, linden extract, hop extract, pine extract, horse chestnut extract, soapberry extract, eucalyptus extract, yuzu extract, coix seed extract, mugwort extract, lychee extract, lavender extract, apple extract, lemon extract, astragalus extract, rose extract, rosemary extract, Roman chamomile extract, etc. These may be used alone or in combination of two or more.

[0088] (7-9) Further ingredients In addition to the above, the composition may contain sugars other than ingredient A (glycosyltrehalose, N-acetylglucosamine, etc.), buffers (sodium phosphate, etc.), chelating agents (edetic acid and its salts, diethylenetriaminepentaacetic acid and its salts, hydroxyethanediphosphonic acid and its salts, etc.), vitamins, fragrances, colorants, ultraviolet absorbers, and at least one ingredient selected from those listed in the "Standards for Quasi-drug Raw Materials" (published June 2006, Yakuji Nipposha). These may be used alone or in combination of two or more.

[0089] (8) Dosage form The formulation of the hair treatment agent (formulation at 25°C) is not limited, and can be, for example, a liquid. When the hair treatment agent is in a liquid form, it may be a viscous liquid or a non-viscous liquid. Examples of viscous forms include cream, paste, and gel. On the other hand, examples of non-viscous forms include emulsions (OW emulsion, WO emulsion, multiple emulsion), foams (mousse-like), and the like. The hair treatment agent may be handled using any packaging material, and known packaging materials can be used as appropriate. That is, the hair treatment agent can be discharged from, for example, a pump, a mousse container, or the like, and can be a pump-type or mousse-type product.

[0090] Among these, the present hair treatment agent is preferably formulated as a viscous liquid from the viewpoints of effectively achieving penetration into the hair and achieving a better balance between dripping prevention and ease of spreadability. When the hair treatment agent is formulated as a viscous liquid, the viscosity is not limited, but the lower limit can be 5,000 mPa·s or more, further 7,500 mPa·s or more, or even 10,000 mPa·s or more. The upper limit is not limited, but can be, for example, 25,000 mPa·s or less, or even 20,000 mPa·s or less. These upper and lower limits can be combined arbitrarily. For example, the viscosity can be 5,000 to 25,000 mPa·s, 7,500 to 20,000 mPa·s, or 10,000 to 20,000 mPa·s. If the hair treatment agent is a viscous liquid (viscosity of 5,000 mPa·s or more), its viscosity is measured using a Brookfield viscometer at 25°C with a No. 4 rotor at a rotation speed of 12 rpm for a measurement time of 60 seconds.

[0091] The use of the present hair treatment agent is not limited, and it can be used alone. However, it can also be used before using post-treatment agents such as compositions containing various treatment ingredients (treatment compositions, shampoo compositions, etc.), hair coloring compositions (oxidative hair dyes, color treatments, color shampoos, hair manicures, etc.), and hair shape-altering compositions (perms, hair straighteners, curling agents, styling agents, etc.). That is, it can be used as a pre-treatment agent to be used before these post-treatment agents. This can improve the effect of the post-treatment agent. That is, for example, it can promote the penetration of treatment ingredients and the like contained in the post-treatment agent into the hair. Of the above, in the present invention, treatment compositions and shampoo compositions are preferred, and treatments and shampoos are more preferred.

[0092] [2] Multi-drug hair treatment agent The multi-component hair treatment composition of the present invention is a multi-component hair treatment composition comprising two or more hair treatment agents, and is characterized by including the hair treatment agent described in [1] above.

[0093] That is, the multi-component hair treatment agent of the present invention is composed of two or more components, and may be composed of any number of components. For example, it can be three or more components. On the other hand, there is no upper limit on the number of component components, and it can be, for example, 10 components or less, 9 components or less, 8 components or less, 7 components or less, or 6 components or less. These upper and lower limits can be appropriately combined. Therefore, for example, it can be 2 to 10 components, 2 to 9 components, or 2 to 8 components. Furthermore, the hair treatment agent described in [1] above may contain only one component, but can also contain, for example, two or more components.

[0094] The application of this multi-component hair treatment composition is not limited, and for example, each hair treatment composition can be applied to hair using a tool such as a comb, brush, or spatula. It can also be applied to hair using the user's hands. It can also be applied to hair (e.g., sprayed) as a mist, aerosol, or foam. It can also be applied by other procedures such as impregnation (dipping), coating, and penetration. These can be used alone or in combination of two or more.

[0095] Furthermore, the multi-component hair treatment agent may be applied to hair that is wet with water or warm water, or may be applied to dry hair. Alternatively, the hair treatment agent applied to the hair may be rinsed off before the next hair treatment agent is applied, or the next hair treatment agent may be applied over the hair without rinsing off the previous hair treatment agent. After application of the hair treatment agent, the hair may or may not be rinsed off. Among these, applying the next hair treatment agent after rinsing is more preferable from the viewpoint of a lighter feel.

[0096] The order of application of the hair treatment agent described in [1] above and the other hair treatment agent is not limited; the hair treatment agent described in [1] above may be applied first, followed by the other hair treatment agent, or the other hair treatment agent may be applied first, followed by the hair treatment agent described in [1] above. Of these, it is preferable to apply the other hair treatment agent after applying the hair treatment agent described in [1] above. That is, it is preferable to apply the other hair treatment agent after applying component (A). This is because applying the other hair treatment agent after applying component (A) can promote the penetration of the active ingredient contained in the other hair treatment agent.

[0097] [3] How to use multi-drug hair treatment products The method for using a multi-component hair treatment composition of the present invention is a method for using a multi-component hair treatment composition comprising multiple hair treatment compositions including a first agent and a second agent, comprising: a first agent application step of applying the first agent to the hair; a first agent removal step of removing the first agent from the hair that has been subjected to the first agent application step; A method for using a multi-component hair treatment agent, characterized by comprising a second-component application step of applying a second component to hair that has undergone a first-component removal step. First agent: The hair treatment agent according to [1] above, which has a viscosity of 5,000 mPa s or more when measured using a B-type viscometer equipped with a No. 4 rotor at a temperature of 25°C, a rotation speed of 12 rpm, and a measurement time of 60 seconds. Second agent: A hair treatment agent whose viscosity, measured using a B-type viscometer equipped with a No. 3 rotor at a temperature of 25°C, a rotation speed of 12 rpm, and a measurement time of 60 seconds, is less than 5,000 mPa·s.

[0098] That is, the method of using the multi-component hair treatment agent comprises a first-component application step, a first-component removal step, and a second-component application step. The first agent application step is a step of applying the first agent, which is the hair treatment agent described in [1] above prepared as a viscous liquid, to the hair. The first agent is as described in [1] above, but in this method, the first agent is preferably a viscous liquid, for example, a cream-like agent.

[0099] In the first agent application step, the first agent may be applied to the hair in any manner, for example, by using a tool such as a comb, brush, or spatula, or by the practitioner's hands. In the first agent application step, the first agent may be applied to hair that is wet with water or warm water, or may be applied to dry hair. Furthermore, after the first agent application step and before the first agent removal step, if necessary, a first agent penetration step can be carried out in which the hair to which the first agent has been applied is left as is, in order to ensure that component A has more time to penetrate into the hair.

[0100] The first agent removal step is a step of removing the first agent from the hair. Removal of the first agent does not necessarily have to be complete. More specifically, the first agent can be removed by rinsing, but examples include rinsing the hair with water, rinsing the hair with warm water, and washing with a detergent (shampoo, soap). These methods may be used alone or in combination of two or more, but among these, rinsing the hair with water and / or warm water is preferred. While stored water may be used for rinsing, running water is preferred from the viewpoint of more effectively reducing the amount of remaining component A. The type of cleaning solution used for rinsing is not limited, but water or warm water can be used.

[0101] The second agent application step is a step of applying the second agent, which has been prepared as a non-viscous liquid, to the hair that has been subjected to the first agent removal step. In this step, the hair that has undergone the first agent removal step may be in a wet state or a dry state, but is preferably in a wet state. This is because hair that has undergone the first agent removal step and is maintained in a wet state sufficiently maintains the softening effect of component A, thereby increasing the penetration efficiency of the second agent. Note that "maintaining a wet state" means a state in which the hair remains as it is after the first agent removal step, or in which moisture has not been completely removed by natural drying, water absorption drying (using a towel, etc.), air drying (using a hair dryer, etc., hot air drying, cold air drying, etc.), etc. Usually, this means that moisture can be detected when touched with the hand. The second agent may be applied in any manner, but it is preferable to use it as a mist and apply it by spraying. [Example]

[0102] The present invention will be described in more detail below with reference to examples. However, these examples are merely examples shown for the convenience of explanation, and the present invention is not limited to these examples in any sense.

[0103] [1] Preparation of hair treatment agent Hair treatment agents (Examples 1 to 21 and Comparative Examples 1 to 3) were obtained by mixing components a1 to a4 in the "A" column of Tables 1 to 3, component B in the "B" column of Tables 1 to 3, and other components shown in Tables 1 to 4 in the amounts shown in Tables 1 to 4. The components A shown in Tables 1 to 3 are as follows: Ingredient A (ingredient a1): Saccharin Na: Sodium saccharin Ingredient A (ingredient a2): Stevioside Ingredient A (ingredient a3): Inulin Component A (Component a4): PTS-Na (sodium paratoluenesulfonate)

[0104] [2] Evaluation of hair treatment products (1) Evaluation of ease of spreading and dripping prevention 1.5 g of each hair treatment agent of Examples 1 to 21 and Comparative Examples 1 to 3 shown in Tables 1 to 3 was applied to 1 g of a 10 cm long black hair bundle sample (manufactured by Bealux) for evaluation. The hair bundle sample was wetted with warm water at 40°C, and the agent was applied with gloved hands at room temperature of 25°C. The feel and ease of spreading were evaluated. After application, the hair treatment agent was left for 10 minutes, during which time resistance to dripping was also evaluated.

[0105] Each evaluation was carried out by five expert panelists, who selected the score that best suited their perception of "touch" based on the following evaluation criterion (1), "ease of spreading" based on the following evaluation criterion (2), and "prevention of dripping" based on the following evaluation criterion (3), and then calculated the arithmetic mean of the scores selected by the five panelists. The results are shown in Tables 1 to 3.

[0106] Evaluation Criteria (1) 5: Very good feel 4: Feels good 3: Feels slightly good 2: A little uncomfortable 1: Bad feel

[0107] Evaluation Criteria (2) 5: Very easy to spread 4: Easy to extend 3: Somewhat easy to extend 2: A little difficult to extend 1: Difficult to extend

[0108] Evaluation Criteria (3) 5: No dripping at all 4: Almost no dripping 3: Minimal dripping 2: Dripping is a bit of a concern 1: Dripping is very noticeable

[0109] (2) Evaluation of formulation stability Thirty grams of each of the hair treatment agents of Examples 1 to 21 and Comparative Examples 1 to 3 shown in Tables 1 to 3 were weighed into No. 4 standard bottles, and each bottle was sealed with an inner stopper and a lid. All bottles were then placed in a thermostatic chamber at 50°C for one month, after which they were removed from the chamber and the condition of the hair treatment agent contained in the bottle was visually evaluated. Evaluations were conducted by five expert panelists, who selected the score that most closely matched their perception based on the following evaluation criteria (4), and the arithmetic mean of the scores selected by the five panelists was calculated. The results are shown in Tables 1 to 3.

[0110] Evaluation criteria (4) 5: No separation at all 4: Almost no separation 3: Some separation is observed 2: Separation is somewhat common 1: Separation is common

[0111] [Table 1]

[0112] [Table 2]

[0113] [Table 3]

[0114] [Table 4]

[0115] [3] Effects of the embodiment In Comparative Example 1, which does not contain Component A, the ease of spreadability, dripping prevention, and formulation stability were all rated 5, but the feel rating was only 1. On the other hand, in Comparative Example 3, which does not contain Component B, the feel rating was 5, but the dripping prevention and formulation stability ratings were only 2. Furthermore, in Comparative Example 2, in which Component B is an anionic surfactant and a cationic surfactant was used instead, the dripping prevention rating was 2 and the formulation stability rating was 1. In contrast, Examples 1 to 21, which contained a1 to a4 as component A and an anionic surfactant as component B, achieved excellent results in the evaluations of feel, ease of spread, resistance to dripping, and formulation stability, with scores of 3 to 5. Therefore, it can be seen that the present invention provides a hair treatment agent that can soften hair texture, and that is easy to spread, less likely to drip, and has excellent formulation stability.

Claims

1. A hair treatment agent comprising the following (A) and (B): (A): At least one selected from the group consisting of the following a1 to a4: a1: a heterocyclic compound or a salt thereof having a sulfonyl group-constituting S atom in the ring skeleton a2: steviol glycoside or its derivative a3: fructan or its derivative a4: Aromatic sulfonic acid or its salt (B): Anionic surfactant

2. The content of (A) is C Ａ % by mass, and the content of (B) is C Ｂ When expressed as mass%, the ratio (C Ａ / C Ｂ 2. The hair treatment agent according to claim 1, wherein the molecular weight of the hair is 0.1 to 40.

3. The content of (A) is C Ａ In terms of mass%, C Ａ The hair treatment agent according to claim 1 or 2, wherein the amount of the hydroxybenzoates is 1% by mass or more.

4. The hair treatment agent according to claim 1 or 2, which further comprises the following (C): (C): Nonionic surfactant

5. The hair treatment agent according to claim 1 or 2, which further comprises the following (D): (D): At least one selected from the group consisting of d1 and d2 below d1: anionic polymer d2: Nonionic polymer

6. 3. The hair treatment agent according to claim 1, wherein the viscosity measured using a Brookfield viscometer equipped with a No. 4 rotor at a temperature of 25°C, a rotation speed of 12 rpm and a measurement time of 60 seconds is 5,000 mPa·s or more.

7. The content of (B) is C Ｂ % by mass, and the content of (C) is C Ｃ When expressed as mass%, the ratio (C Ｂ / C Ｃ 5. The hair treatment agent according to claim 4, wherein the value of (a) is 0.25 to 2.

8. A multi-component hair treatment agent comprising two or more hair treatment agents, A multi-component hair treatment composition comprising the hair treatment composition according to claim 1.

9. A method for using a multi-component hair treatment agent comprising multiple hair treatment agents including the following first agent and the following second agent, a first agent application step of applying the first agent to hair; a first agent removal step of removing the first agent from the hair that has been subjected to the first agent application step; a second agent application step of applying the second agent to the hair that has undergone the first agent removal step. First agent: the hair treatment agent according to claim 6 Second agent: A hair treatment agent having a viscosity of less than 5,000 mPa·s measured using a Brookfield viscometer equipped with a No. 3 rotor at a temperature of 25°C, a rotation speed of 12 rpm, and a measurement time of 60 seconds.

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