Hair cosmetic agent

Abstract

To provide a hair treatment composition comprising a combination of an O / W-type agent and a W / O-type agent, which prevents dripping from hair when a mixed preparation of these agents is applied to the hair.SOLUTION: A hair cosmetic is used by mixing a first agent and a second agent, wherein the first agent contains 1.5 mass% or more of a surfactant (A1) based on 100 mass% of the total amount of the first agent and is in a water-in-oil emulsion state, and the second agent contains an oily component (B2) and is in a water-in-oil emulsion state.SELECTED DRAWING: None

Description

[Technical field]

[0001] The present invention relates to a hair cosmetic composition, and more particularly to a hair cosmetic composition using a mixture of two or more agents that form different emulsified states, that is, an oil-in-water type and a water-in-oil type. [Background technology]

[0002] The following Patent Documents 1 to 3 are known as hair cosmetic compositions that use a mixture of two agents that form different emulsified states, that is, an oil-in-water type and a water-in-oil type. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 09-002924 [Patent Document 2] Japanese Patent Application Publication No. 10-067624 [Patent Document 3] JP 2019-167337 A Summary of the Invention [Problem to be solved by the invention]

[0004] The emulsion state of a hair cosmetic can be selected from various viewpoints at the design stage. For example, an oil-in-water type (hereinafter also simply referred to as "O / W type") is likely to be selected for an agent that prioritizes a moisturizing feel when it comes into contact with the skin. On the other hand, a water-in-oil type (hereinafter also simply referred to as "W / O type") is likely to be selected for an agent that prioritizes an oily and thick feel when it comes into contact with the skin. Furthermore, the W / O type is likely to be selected when the gloss of the agent itself and the hair after dyeing is prioritized. In addition, as described in Patent Documents 1 to 3 above, from the viewpoints of oxidation inhibition, container protection, odor inhibition, and skin irritation inhibition, the W / O type, which can make the oil phase the external phase, is likely to be selected. In this way, the emulsion state can be selected based on the priority of the agent, and for example, in a hair cosmetic composed of multiple agents such as a hair dye or bleach, agents in different emulsion states can be used in combination.

[0005] In addition, in hair cosmetic compositions using different emulsified agents, it may be necessary to control the properties of each agent after mixing. That is, in the case of hair dyes, bleaches, etc., the mixed agent may be applied to hair and left to stand for a certain period of time to ensure that the agent acts on the hair. In such cases, it is preferable that the applied mixed agent has a suitable viscosity so that it does not drip from the hair. However, when an O / W type agent and a W / O type agent are mixed, the viscosity of the mixed agent tends to decrease, and there is a problem that it is difficult to obtain a mixed agent with a desired viscosity. On the other hand, when trying to increase the viscosity of the resulting mixed agent, a problem regarding mixability may become apparent, in that it becomes difficult to obtain a uniform mixed agent. That is, a problem regarding mixability is that lumps are generated, such as one type of agent becoming a lump or multiple types of agents becoming a lump during mixing. Furthermore, when solving this problem, there is a problem that the effect of the hair cosmetic agent on the feel of the hair must be considered. On the other hand, when trying to increase the viscosity of the resulting mixture, a problem with mixability may become apparent, in that it becomes difficult to obtain a uniform mixture. That is, the problem with mixability is that lumps are generated when one of the agents becomes a mass or multiple agents become a mass during mixing. Furthermore, when solving this problem, there is a challenge in that the effect of the feel of the hair cosmetic agent on the hair must also be taken into consideration.

[0006] In this regard, the above-mentioned Patent Document 1 states that the main ingredient will oxidize and deteriorate when exposed to air (

[0005] ), that the container will discolor and corrode and deform when exposed to an alkaline agent (

[0006] ), that the alkaline agent will volatilize and produce an unpleasant odor (

[0006] ), and that the fragrance will be contained in the oil phase, making it difficult to obtain a fragrant aroma (

[0007] ).

[0007] ) has been disclosed, which is characterized by comprising a first agent which is a W / O type emulsion containing a main agent in the aqueous phase, and a second agent which, when mixed with the first agent, causes the first agent to be converted into an O / W type emulsion and / or causes demulsification of the first agent (Claim 1).

[0007] Furthermore, the above-mentioned Patent Document 2 discloses a hair treatment emulsion (claim 1) for the purpose of solving problems such as the difficulty of maintaining an appropriate viscosity that prevents dripping from the hair when a large amount of surfactant is used to improve the stability of a W / O emulsion (

[0005] ), and the difficulty of increasing the hair dyeing power of many W / O emulsions (

[0005] ). The emulsion is characterized by comprising a first agent of a W / O emulsion that contains a main agent in the aqueous phase and an oil-soluble polymer compound in the oil phase, and a second agent that, when mixed with the first agent, inverts the phase of the first agent into an O / W emulsion and / or destroys the emulsification of the first agent.

[0008] Furthermore, the above-mentioned Patent Document 3 discloses a two-component oxidative hair dye or bleach composition (claim 1) that is composed of a first agent containing an alkaline agent and a second agent containing an oxidizing agent, with the aim of providing a two-component oxidative hair dye or bleach composition that can provide sufficient hair dyeing or bleaching properties and reduce skin irritation (

[0014] ), and in which one of the first and second agents is an oil-in-water (O / W) emulsion and the other is a water-in-oil (W / O) emulsion.

[0009] However, the above Patent Documents 1 and 3 do not mention or suggest any focus on or methods for viscosity control when mixing an O / W type agent with a W / O type agent. Furthermore, although the above Patent Document 2 identifies preventing dripping from hair as one of its problems, it provides a solution in a composition with a limited amount of surfactant, as described in

[0004] , "if a large amount of surfactant is used to improve the stability of the emulsion, it becomes difficult to maintain an appropriate viscosity that does not drip from the hair when mixed with the second agent," but does not provide a solution when a surfactant is used. In this regard, in compositions in which a combination of an aqueous component and an oil-based component is essential, currently, a surfactant is naturally blended, but when an attempt is made to obtain good mixability by blending a surfactant, the formulation stability may decrease. For this reason, there is a demand for hair cosmetics that combine an O / W type agent and a W / O type agent, which can suppress dripping, while also providing good mixability and a good feel on the hair after application.

[0010] The present invention has been made in view of the above-mentioned problems, and aims to provide a hair cosmetic composition that combines an O / W type agent and a W / O type agent, which, when a mixed agent obtained by mixing a first agent and a second agent is applied to hair, prevents the mixed agent from dripping from the hair, while simultaneously achieving good mixability (preventing clumping when mixed) and a good feel on the hair after application. [Means for solving the problem]

[0011] The present invention includes the following: [1] A hair cosmetic composition comprising a first agent and a second agent, The first agent has a mass ratio of (A 1 ) containing 1.5% by mass or more of a surfactant and forming an oil-in-water emulsion; The second agent is 2 ) A hair cosmetic composition comprising an oily component and forming a water-in-oil type emulsion. [2] The above (B 2 ) As an oil component, (B 2 -1) The hair cosmetic composition according to the above item [1], which contains a higher alcohol. [3] The above (B 2 ) As an oil component, (B 2 -1) containing a higher alcohol, 2 -1) As a higher alcohol, (B 2 -1-1) Octyldodecanol and (B 2 -1-2) Contains isostearyl alcohol, and the ratio of their contents is 0.2≦(B 2 -1-1) / (B2 The hair cosmetic composition according to the above [1] or [2], wherein -1-2)≦5. [4] When the entire second agent is taken as 100% by mass, the (B 2 ) The hair cosmetic composition according to any one of the above [1] to [3], wherein the content of the oily component is 18 to 30 mass %. [5] The above (B 2 ) As an oil component, (B 2 -2) The hair cosmetic composition according to any one of the above [1] to [4], which contains silicone. [6] The above (A 1 ) As a surfactant, two or more kinds of (A 1 -1) The hair cosmetic composition according to any one of the above [1] to [5], which contains a nonionic surfactant. [7] The above (A 1 ) As a surfactant, two or more kinds of (A 1 -1) A nonionic surfactant is contained, 1 -1) The nonionic surfactant is (A 1 -1-1) A nonionic surfactant having an HLB of less than 10, and (A 1 -1-2) A hair cosmetic composition according to any one of the above [1] to [6], which contains a nonionic surfactant having an HLB of 10 or more. [8] The above (A 1 ) As a surfactant, two or more kinds of (A 1 -1) A nonionic surfactant is contained, 1 -1) The nonionic surfactant is (A 1 -1-1) A nonionic surfactant having an HLB of less than 10, and (A 1 -1-2) a nonionic surfactant having an HLB of 10 or more, 1 -1-1) The content of a nonionic surfactant having an HLB of less than 10 and the above (A 1 -1-2) The content of nonionic surfactants with HLB of 10 or more and the ratio of 1 -1-1) / (A 1 The hair cosmetic composition according to any one of the above [1] to [7], wherein -1-2)≦1. [9] The above (A 12. The hair cosmetic composition according to any one of the above [1] to [8], which contains a polyoxyethylene alkyl ether as a surfactant.

[10] The first agent is 1 ) Contains oily ingredients, When the entire first agent is taken as 100 mass %, the (B 1 ) The hair cosmetic composition according to any one of [1] to [9] above, wherein the content of oily components is 7% by mass or more.

[11] The hair cosmetic composition according to any one of [1] to

[10] above, wherein the first agent and the second agent are mixed on a tray.

[12] The hair cosmetic composition according to any one of [1] to

[11] above, which is an oxidative hair dye or a bleaching agent. Effect of the Invention

[0012] According to the hair cosmetic composition of the present invention, when an O / W type agent and a W / O type agent are used in combination and the hair cosmetic composition obtained by mixing these agents is applied to hair, the hair cosmetic composition is prevented from dripping from the hair, while achieving both good mixability (prevention of clumping when mixed) and a good feel on the hair after application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The present invention will be described in detail below. Unless otherwise specified, "%" means "% by mass", "parts" means "parts by mass", and "X to Y" means "X or more and Y or less". In addition, for some compound names, names based on the Japan Cosmetic Industry Association's Ingredient Labeling Name List or INCI (International Nomenclature of Cosmetic Ingredients) names will be used. Furthermore, in the names of some compounds, polyoxyalkylene chains may be 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.

[0014] [1] Hair cosmetics The hair cosmetic composition of the present invention is a hair cosmetic composition in which a first agent and a second agent are mixed together, When the entire first agent is taken as 100 mass%, (A 1 ) containing 1.5% by mass or more of a surfactant and forming an oil-in-water (O / W) emulsion; The second agent is (B 2 ) It is characterized by containing an oily component and forming a water-in-oil (W / O) emulsion state.

[0015] The first agent is in an oil-in-water (O / W) emulsion state. The oil-in-water (O / W) emulsion state is an emulsion state in which the aqueous component forms a continuous phase and the oil component is dispersed in the continuous phase. In other words, it can be said that the aqueous component forms an outer phase and the oil component forms an inner phase. The O / W emulsion state may be determined in any manner, but for example, when the agent is dropped into water and stirred (lightly stirred), if the agent is dispersed in the water, it can be determined that the agent is in an O / W emulsion state.

[0016] The second agent is in a water-in-oil (W / O) emulsion state. A water-in-oil (W / O) emulsion is an emulsion state in which an oil-based component forms a continuous phase and an aqueous component is dispersed within the continuous phase. In other words, it can be said that the emulsion state is one in which an outer phase is formed by the oil-based component and an inner phase is formed by the aqueous component. The W / O emulsion state may be determined in any manner, but for example, when an agent is dropped into water and stirred (lightly stirred), if the agent is not dispersed in the water and is maintained, it can be determined that the agent is in a W / O emulsion state.

[0017] The hair cosmetic agent is used by mixing the first agent and the second agent. The emulsified state of the mixed agent (hair cosmetic agent after mixing) obtained by mixing the first agent and the second agent is not limited, and may be an O / W type emulsified state or a W / O type emulsified state. Among these, for example, when the hair cosmetic agent is an oxidative hair dye agent, a bleaching agent, a decolorizing agent, or a decolorizing and decolorizing agent, it is preferable that it is an O / W type emulsified state. This is because the external phase is aqueous, which allows the active ingredient to easily penetrate the hair and work effectively. In addition, there is also the advantage that it is easy to wash off.

[0018] [2] First agent The first agent contains a surfactant (A 1 ) at least 1.5 mass%.

[0019] 1. Surfactants The surfactant is a nonionic surfactant (A 1 -1) Cationic surfactants, anionic surfactants and amphoteric surfactants can be mentioned. These can be used alone or in combination of two or more. The surfactant is blended for the purpose of, for example, stably containing oily components and the like in the first agent, or for the purpose of obtaining good mixability. As the surfactant contained in the first agent, among the above-mentioned, a nonionic surfactant (A 1 The nonionic surfactant (A-1) is preferred. 1 The use of nonionic surfactants other than the nonionic surfactants can improve the formulation stability (particularly when the first agent contains a dye and / or an alkali agent), and can improve the mixability when mixed with the second agent, which is in a W / O type emulsion state. Furthermore, the first agent can contain two or more nonionic surfactants (A-1). 1 It is preferable to use two or more nonionic surfactants (A-1). 1 The use of -1) can improve the formulation stability (particularly when the first agent contains a dye and / or an alkaline agent) compared to the use of only one type, and can also improve mixability.

[0020] Examples of nonionic surfactants include ether-type nonionic surfactants, ester-type nonionic surfactants, and alkyl glucosides. These may be used alone or in combination of two or more. Among these, ether-type nonionic surfactants are preferred from the viewpoint of effectively suppressing the formation of lumps when the first agent and the second agent are mixed. In addition, ether-type nonionic surfactants are preferred from the viewpoint of improving the formulation stability (especially when the first agent contains a dye and / or an alkali agent), and improving the mixability when mixed with the second agent in a W / O type emulsion state.

[0021] Examples of the ether-type nonionic surfactant include polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyalkylene alkyl phenyl ethers, polyoxyalkylene phenyl ethers, etc. These may be used alone or in combination of two or more kinds.

[0022] Examples of the polyoxyalkylene group in the ether-type nonionic surfactant include a polyoxyethylene group (POE), a polyoxypropylene group (POP), etc. These may be used alone or in combination of two or more kinds. Examples of the alkyl group in the ether-type nonionic surfactant include cetyl, stearyl, behenyl, lauryl, myristyl, octyldodecyl, hexyldecyl, isostearyl, decyltetradecyl, etc. These may be used alone or in combination of two or more. Examples of the alkenyl group in the ether-type nonionic surfactant include an oleyl group, etc. These may be used alone or in combination of two or more kinds. Examples of the alkylphenyl group in the ether-type nonionic surfactant include a nonylphenyl group, an octylphenyl group, etc. These may be used alone or in combination of two or more kinds. The polyoxyalkylene group can be appropriately combined with the alkyl group, alkenyl group, alkylphenyl group, or the like.

[0023] Among the above, examples of polyoxyalkylene alkyl ethers include POE stearyl ether (steareth), POE cetyl ether (ceteth), POE oleyl ether (oleth), POE behenyl ether (beheneth), POE lauryl ether (laureth), POE myristyl ether, POE octyldodecyl ether, POE hexyldecyl ether, POE isostearyl ether, POE·POP cetyl ether, POE·POP decyltetradecyl ether, and the like. These may be used alone or in combination of two or more. From the viewpoint of mixability, POE alkylene ether is preferred, and POE stearyl ether, POE cetyl ether, and POE oleyl ether are more preferred.

[0024] 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. 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. Examples of oleths include POE oleyl ethers (oleths) such as POE(2) oleyl ether and POE(3) oleyl ether; POE(4.2) lauryl ether, POE(7) oleyl ether, POE(9) lauryl 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.

[0025] 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. Examples of laureth include POE(2) lauryl ether, POE(3) lauryl ether, POE(21) ​​lauryl ether, and POE(25) lauryl ether. 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. 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. 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. Examples of the POE isostearyl ether include POE(5) isostearyl ether, etc. These may be used alone or in combination of two or more kinds. Examples of POE·POP 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. Examples of POE·POP decyl tetradecyl ether include POE(12)POP(6) decyl tetradecyl ether, etc. These may be used alone or in combination of two or more.

[0026] Among the above, examples of polyoxyalkylene alkenyl ethers include POE oleyl ether (oleth), etc. These may be used alone or in combination of two or more. Further, examples of the oleth include POE oleyl ethers (oleths) such as POE(2) oleyl ether and POE(3) oleyl ether; POE(4.2) lauryl ether, POE(7) oleyl ether, POE(9) lauryl 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.

[0027] Among the above, examples of polyoxyalkylene alkylphenyl ether include POE nonylphenyl ether, POE octylphenyl ether, etc. These may be used alone or in combination of two or more.

[0028] On the other hand, among nonionic surfactants, ester-type nonionic surfactants, POE sorbitan fatty acid esters such as POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, and POE sorbitan trioleate; glyceryl mono fatty acid esters such as POE glycerin monostearate and POE glycerin monomyristate; and POE sorbitol fatty acid esters such as POE sorbitan tetraoleate, POE sorbitan hexastearate, and POE sorbitan monolaurate. The number of moles of POE added to POE sorbitan fatty acid esters and monoglyceryl mono fatty acid esters is, for example, 5 or more. The number of moles of POE added to POE sorbitol fatty acid esters is, for example, 6 or more. Other examples of ester-type nonionic surfactants include sorbit beeswax such as POE(6)POE sorbit beeswax, 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.

[0029] The first agent is a nonionic surfactant (A 1 When the first agent contains the nonionic surfactant (A-1), the content of the nonionic surfactant (A-1) in the first agent is 100% by mass. 1 Although the content ratio of A-1) is not limited, the surfactant contained in the first agent is preferably a nonionic surfactant (A 1In the case where the content is 1.5% by mass or more, the lower limit is 1.5% by mass or more. This content ratio can be further set to 1.7% by mass or more, further set to 1.9% by mass or more, further set to 2.0% by mass or more, further set to 2.1% by mass or more, and further set to 2.2% by mass or more. Similarly, the content ratio of the nonionic surfactant (A 1 Although the content ratio of -1) is not limited, the upper limit can be 10 mass% or less, further 8 mass% or less, further 6 mass% or less, further 5 mass% or less, and further 4 mass% or less. The above upper and lower limits can be combined with each other. That is, for example, it can be 1.5 to 10 mass%, further 1.7 to 8 mass%, further 1.9 to 8 mass%, further 2.0 to 6 mass%, further 2.1 to 5 mass%, and further 2.2 to 4 mass%. It can also be 1.5 to 5 mass%, further 2.0 to 4 mass%, and further 2.2 to 4 mass%.

[0030] In the first agent, a nonionic surfactant (A 1 When using a nonionic surfactant (A-1), as described above, it is preferable to use two or more of them in combination rather than using only one. In particular, it is preferable to use two types of surfactants with different HLBs in combination from the viewpoint of compatibility. More specifically, it is preferable to use a nonionic surfactant (A-1) with an HLB of less than 10 in combination. 1 -1-1) and nonionic surfactants with HLB of 10 or higher (A 1 It is preferable to use the above in combination so as to include both of the above. Among the above nonionic surfactants, those with an HLB of less than 10 (A 1 -1-1) Examples of nonionic surfactants include steareth-1 to 5, ceteth-1 to 5, oleth-1 to 5, beheneth-1 to 5, laureth-1 to 3, cetreth-1 to 4, etc. These may be used alone or in combination of two or more kinds. On the other hand, among the above nonionic surfactants, those with HLB of 10 or more (A 1-1-2) Examples of nonionic surfactants include steareth-7 to 50, ceteth-6 to 50, oleth-7 to 100, beheneth-10 to 50, laureth-5 to 50, cetreth-7 to 50, etc. These may be used alone or in combination of two or more kinds.

[0031] The above HLB (HLB value) is a value that indicates the degree of affinity of a surfactant to water and oil (organic compounds insoluble in water). The HLB value ranges from 0 to 20, with the closer to 0 the higher the lipophilicity and the closer to 20 the higher the hydrophilicity. The HLB value is measured according to "20·3·1 Actual measurement of HLB value by emulsification method" (pages 854-855) described in "Handbook - Cosmetics and Pharmaceutical Raw Materials - Revised Edition (published February 1, 1977, Nikko Chemicals Co., Ltd.)". Hereinafter, in this specification, the method for measuring the HLB value follows this method.

[0032] In the first agent, a nonionic surfactant (A 1 -1), (A 1 -1-1) and (A 1 When used in combination with -1-2), the ratio of these contents (A 1 -1-1) / (A 1 However, from the viewpoint of effectively suppressing the formation of lumps when the first agent and the second agent are mixed, (A 1 -1-1) / (A 1 -1-2)≦1 is preferable. The lower limit can be 0.01 or more, further 0.1 or more, further 0.2 or more, and further 0.3 or more. Similarly, the upper limit can be 1.1 or less, further 0.9 or less, further 0.7 or less, and further 0.5 or less. The above upper and lower limits can be combined with each other. That is, for example, it can be 0.01.5 to 1.1, further 0.1 to 0.9, further 0.2 to 0.7, and further 0.3 to 0.5.

[0033] On the other hand, among the above surfactants, cationic surfactants include alkyl quaternary ammonium salts such as monoalkyl quaternary ammonium salts, dialkyl quaternary ammonium salts, trialkyl quaternary ammonium salts, benzalkonium quaternary ammonium salts, and monoalkyl ether quaternary ammonium salts, alkyl amine salts, fatty acid amide amine salts, ester-containing tertiary amine salts, and amine salts such as arcobell-type tertiary amine salts, alkyl pyridinium salts, alkyl isoquinolium salts, and other cyclic quaternary ammonium salts, and benzethonium chloride. These may be used alone or in combination of two or more. By using cationic surfactants in combination, the mixing property can be further improved.

[0034] Among these, alkyl quaternary ammonium salts are preferred, and more preferably, monoalkyl-type quaternary ammonium salts and / or dialkyl-type quaternary ammonium salts are more preferred, and more preferably, monoalkyl-type quaternary ammonium salts.

[0035] Monoalkyl quaternary ammonium salts include behenyltrimethylammonium chloride (behentrimonium chloride), lauryltrimethylammonium chloride, lauryltrimethylammonium bromide, alkyl(16,18)trimethylammonium chloride, cetyltrimethylammonium chloride (cetrimonium chloride), cetyltrimethylammonium bromide, cetyltrimethylammonium saccharin, stearyltrimethylammonium chloride (steartrimonium chloride), stearyltrimethylammonium bromide, cetyltrimethylammonium saccharin, stearyltrimethylammonium saccharin, distearate chloride, Examples of such compounds include allyl dimethyl ammonium (distearyldimonium chloride), alkyl (28) trimethyl ammonium chloride, diPOE (2) oleyl methyl ammonium chloride, diPOE stearyl methyl ammonium chloride, POE (1) POP (25) diethyl methyl ammonium chloride, POP methyl diethyl ammonium chloride, methacryloyloxyethyl trimethyl ammonium chloride, dicocoyl dimethyl ammonium chloride, lanolin fatty acid aminopropyl ethyl dimethyl ammonium ethyl sulfate, behenyl trimethyl ammonium methyl sulfate, hydroxyethyl cellulose dimethyl diallyl ammonium chloride, etc. These compounds may be used alone or in combination of two or more.

[0036] Among the above surfactants, examples of anionic surfactants include alkyl ether sulfates, POE alkyl ether sulfates, alkyl sulfates, alkenyl ether sulfates, alkenyl sulfates, olefin sulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfonic acid salts, N-acylamino acid surfactants, phosphoric acid mono- or diester surfactants, and sulfosuccinic acid esters. These surfactants may be used alone or in combination of two or more. Examples of counter ions of the anionic groups of these surfactants include sodium ions, potassium ions, and triethanolamine. These surfactants may be used alone or in combination of two or more.

[0037] That is, for example, disodium lauryl sulfosuccinate, sodium lauryl sulfate, sodium myristyl sulfate, potassium lauryl sulfate, ammonium lauryl sulfate, triethanolamine lauryl sulfate, sodium cetyl sulfate, sodium stearyl sulfate, sodium POE lauryl ether sulfate, triethanolamine POE lauryl ether sulfate, ammonium POE lauryl ether sulfate, sodium POE stearyl ether sulfate, disodium lauryl sulfosuccinate, sodium stearoyl methyl taurine, triethanolamine dodecylbenzenesulfonate, sodium tetradecenesulfonate, sodium lauryl phosphate, POE lauryl ether phosphoric acid and its salts, N-lauroyl glutamate salts (sodium lauroyl glutamate, etc.), N-lauroyl methyl-β-alanine salts, N-acyl glycine salts, N-acyl glutamate salts, higher fatty acids such as lauric acid, myristic acid, and salts of these higher fatty acids. These may be used alone or in combination of two or more.

[0038] Furthermore, among the above surfactants, examples of the amphoteric surfactant include amino acid type amphoteric surfactants and betaine type amphoteric surfactants. Among these, examples of the amino acid type amphoteric surfactants include N-lauroyl-N'-carboxymethyl-N'-hydroxyethylethylenediamine sodium (sodium lauroamphoacetate), 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, undecylhydroxyethylimidazolinium betaine sodium, alkyldiaminoethylglycine hydrochloride, N-coconut oil fatty acid acyl-N'-carboxyethyl-N'-hydroxyethylethylenediamine sodium, N-coconut oil fatty acid acyl-N'-carboxyethoxyethyl-N'-caprylamide gel, and the like. glycine-type amphoteric surfactants such as sodium laurylaminopropionate, sodium laurylaminodipropionate, and triethanolamine laurylaminopropionate; and the like. These may be used alone or in combination of two or more.

[0039] Among the above surfactants, examples of the betaine type amphoteric surfactant include aminoacetic acid betaine type amphoteric surfactants such as coconut oil alkyl betaine, lauryl dimethyl amino acetic acid betaine, myristyl dimethyl amino acetic acid betaine, stearyl dimethyl amino acetic acid betaine, sodium stearyl dimethyl betaine, coconut oil fatty acid amidopropyl betaine, palm oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, ricinoleic acid amidopropyl betaine, and stearyl dihydroxyethyl betaine; and sulfobetaine type amphoteric surfactants such as lauryl hydroxysulfobetaine. These may be used alone or in combination of two or more.

[0040] When the first agent contains a surfactant, the content of the surfactant in the entire first agent (100% by mass) is not limited, but the lower limit is 0.01% by mass or more from the viewpoint of mixability. This content can be 0.05% by mass or more, and can be 0.1% by mass or more. Similarly, the content of the surfactant in the first agent is not limited, but the upper limit can be 15% by mass or less, 10% by mass or less, and 5% by mass or less from the viewpoint of hair dyeing ability, decoloring ability, formulation stability, and mixability. The above upper and lower limits can be combined. That is, for example, it can be 0.01 to 15% by mass, 0.05 to 10% by mass, and 0.1 to 5% by mass.

[0041] <2> Oily component (B 1 ) In addition to the above-mentioned surfactants, the first agent contains an oil component (B 1 ). Oil component (B 1 ) can improve the formulation stability, improve the feel, and improve the application feel. Oily component (B 1 Examples of the oil-based component (B) include higher alcohols, hydrocarbons, oils and fats, silicones, waxes, higher fatty acids, esters, etc. These may be used alone or in combination of two or more. 1 ) are preferably higher alcohols, hydrocarbons, oils and fats, and silicones.

[0042] Among the oily components, the higher alcohol can be an alcohol having a carbon chain with 6 or more carbon atoms. For example, higher alcohols having 8 to 40 carbon atoms are included. The skeleton can be saturated or unsaturated, and can be linear or branched. Specific examples include cetearyl alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, arachyl alcohol, behenyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, lanolin alcohol, phytosterol, and cholesterol. These can be used alone or in combination of two or more. Among these, cetanol and stearyl alcohol are preferred for the first agent.

[0043] Among the oily components, examples of hydrocarbons include liquid paraffin (mineral oil), liquid isoparaffin, paraffin (paraffin wax), olefin oligomer, polyisobutene, hydrogenated polyisobutene, synthetic squalane, squalene, 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. Among these, petrolatum is preferred for the first agent.

[0044] Among the oily components, examples of fats and oils include vegetable oils (vegetable fats and oils) and animal oils (animal fats and oils). Examples of vegetable oils include camellia oil, rice bran oil, rice germ oil, 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, tea seed oil, sasanqua oil, Argania spinosa kernel oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, cacao butter, corn oil, peanut oil, rapeseed oil, evening primrose oil, wheat germ oil, pearl barley 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. Among these, in the first agent, vegetable oils are preferred, and camellia oil, rice bran oil, and rice germ oil are more preferred.

[0045] Among the oily components, silicones include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, high polymerization silicone having an average degree of polymerization of 650 to 10,000, amino-modified silicone (aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymer (aminoethylaminopropyldimethicone) etc.), polyether-modified silicone, betaine-modified silicone, alkyl-modified silicone, alkoxy-modified silicone, mercapto-modified silicone, carboxy-modified silicone, fluorine-modified silicone, etc. These may be used alone or in combination of two or more. Among these, dimethicone and amino-modified silicone are preferred for the first agent, and high polymerization methylpolysiloxane and aminoethylaminopropyldimethicone are more preferred.

[0046] Among the oily components, examples of waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, spermaceti wax, rice bran wax, sugarcane wax, palm wax, montan wax, cotton wax, bayberry wax, ivory wax, kapok wax, shellac wax, etc. These may be used alone or in combination of two or more.

[0047] Among the oily components, examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, lanolin fatty acid, etc. These may be used alone or in combination of two or more.

[0048] Among the oily components, the esters are 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, myristate, and ethylhexyl palmitate. Examples of the lactate include myristyl lactate, decyl oleate, hexyldecyl dimethyloctanoate, triisodecyl myristate, isostearyl myristate, PPG-3 benzyl ether myristate, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, fatty acid (C10-30) (cholesteryl / lanosteryl), lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cetyl caprate, diisostearyl malate, and lanolin derivatives. These may be used alone or in combination of two or more.

[0049] The first agent is an oil-based component (B 1 ), the oil component (B) in the first agent as a whole 100% by mass 1 The content ratio of ) is not limited, but the lower limit can be 1% by mass or more, further 2% by mass or more, further 5% by mass or more, further 7% by mass or more, and further 9% by mass or more. In particular, when the content is 7% by mass or more, the dripping suppression effect and the clumping suppression effect are excellent. The upper limit can be 35% by mass or less, further preferably 30% by mass or less, further preferably 25% by mass or less, further preferably 20% by mass or less, and further preferably 17% by mass or less. The above upper and lower limits can be combined with each other. That is, for example, it can be 1 to 35% by mass, further preferably 2 to 30% by mass, further preferably 5 to 25% by mass, further preferably 7 to 20% by mass, and further preferably 9 to 17% by mass.

[0050] <3> Ingredients other than surfactants and oily ingredients The first agent contains the above-mentioned surfactant (A 1 ) and oily components (B 1 In addition to the above, other ingredients may be included. Examples of other ingredients include alkaline agents, dyes, solubilizers, water-soluble polymers, preservatives, antioxidants, stabilizers, and plant extracts.

[0051] <3-1> Alkaline agents The alkaline agent is a component that exhibits alkalinity in a water-soluble state. For example, when the second agent contains an oxidizing agent, the alkaline agent can be mixed with the first agent and the second agent, and the alkaline agent and the oxidizing agent coexist to decompose or alter colored components such as melanin and dyes, thereby lightening or decolorizing the visible color. That is, regardless of whether or not the hair is dyed, the hair can be bleached by decomposing or altering the melanin contained in the hair, and the dye can be bleached by decomposing or altering the dye applied to the dyed hair. In addition, the alkaline agent alone has the effect of swelling the hair, or has a hair swelling promoting effect that promotes this effect. Therefore, it is a component that can promote the above-mentioned effects inside the hair.

[0052] The alkaline agent includes organic bases, inorganic bases and salts thereof. Among these, the organic base includes organic amines, basic amino acids (arginine, lysine and their salts, etc.), guanidine and its salts (guanidine carbonate, etc.), etc. Specific examples include alkanolamines such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, aminomethylpropanol (2-amino-2-methyl-1-propanol, etc.), aminomethylpropanediol (2-amino-2-methyl-1,3-propanediol, etc.), monoethylamine, isopropylamine and other alkylamines. These organic bases may be used alone or in combination of two or more.

[0053] 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 inorganic bases may be used alone or in combination of two or more.

[0054] When the first agent contains an alkaline agent, the content is not limited, but the pH of the hair cosmetic agent may be more than 7, may be more than 8, or may be more than 9. On the other hand, the upper limit of the pH is not limited, but the pH may be generally less than 13.5, may be less than 13, or may be less than 12. When the hair cosmetic agent is a hair dye, bleach, decolorizing agent, or decolorizing agent, the bleaching effect, hair swelling effect, hair swelling promotion effect, etc., associated with the inclusion of the alkaline agent can be more effectively obtained within these ranges. These upper and lower limit values ​​can be arbitrarily combined. For example, the pH may be more than 7 and less than 13.5, may be 8 to 13, or may be 9 to 12. The pH of the hair cosmetic agent is the pH after the first agent and the second agent are mixed, and is the pH at 25°C.

[0055] The content ratio of the alkaline agent in the first agent is not limited, but the lower limit can be 0.1% by mass or more, 0.5% by mass or more, or 3% by mass or more, based on 100% by mass of the entire first agent. On the other hand, the upper limit can be 17% by mass or less, 15% by mass or less, or 10% by mass or less. In these ranges, better hair dyeing power can be obtained. The above upper and lower limits can be combined with each other. That is, for example, it can be 0.1 to 17% by mass, 0.5 to 15% by mass, or 3 to 10% by mass.

[0056] <3-2> Dye When the hair cosmetic composition is a hair dye, the dye can be contained together with the alkaline agent. The dye may be contained in either the first or second agent, but is preferably contained in the first agent. The dye is a component that contributes to hair dyeing, and any dye known in the art can be used. Specific examples include oxidation dyes and direct dyes. These may be used alone or in combination of two or more. Among the above, the oxidation dye is composed of at least a dye intermediate among a dye intermediate and a coupler. The dye intermediate is a component that develops color by oxidative polymerization in the presence of an oxidizing agent. On the other hand, the coupler is a component that develops color by oxidative polymerization together with the dye intermediate in the presence of an oxidizing agent, and can produce a color that cannot be obtained from an oxidative polymer of only the dye intermediate.

[0057] Examples of dye intermediates include p-phenylenediamine, toluene-2,5-diamine (p-toluenediamine), 2,2'-[(4-aminophenyl)imino]bisethanol, N-phenyl-p-phenylenediamine, 4,4'-diaminodiphenylamine, 2-hydroxyethyl-p-phenylenediamine, N,N-bis(2-hydroxyethyl)-p-phenylenediamine, o-chloro-p-phenylenediamine, 4-amino-m-cresol, 2-amino-4-hydroxyethylaminoanisole, 2,4-diaminophenol, 1,2,4-trihydroxybenzene, o-aminophenol, p-aminophenol, and p-methylaminophenol. Furthermore, the dye intermediates include salts of the above-mentioned various compounds. The salts include acid addition salts. Examples of acid addition salts include addition salts of inorganic acids such as hydrochlorides and sulfates, and addition salts of organic acids such as acetates. These dye intermediates and their salts may be used alone or in combination of two or more.

[0058] Examples of couplers include 2,4-diaminophenoxyethanol, α-naphthol, 2,6-diaminopyridine, 5-amino-o-cresol, 5-(2-hydroxyethylamino)-2-methylphenol, resorcin, catechol, pyrogallol, phloroglucin, gallic acid, hydroquinone, m-phenylenediamine, toluene-3,4-diamine, diphenylamine, 3,3'-iminodiphenyl, 1,5-dihydroxynaphthalene, tannic acid, o-aminophenol, m-aminophenol, p-aminophenol, and p-methylaminophenol. Furthermore, the coupler includes salts of the above-mentioned various compounds. The salts include acid addition salts. Examples of acid addition salts include addition salts of inorganic acids such as hydrochlorides and sulfates, and addition salts of organic acids such as acetates. These couplers and their salts may be used alone or in combination of two or more.

[0059] Among the above, o-aminophenol, p-aminophenol, and p-methylaminophenol can be used as both a dye intermediate and a coupler, but for example, when these compounds are used as dye intermediates, the compounds exemplified as the above couplers other than these compounds can be used in combination as couplers.Similarly, when these compounds are used as couplers, the compounds exemplified as the above dye intermediates other than these compounds can be used in combination as dye intermediates.

[0060] Among the above, examples of the direct dyes include ionic direct dyes and nonionic direct dyes. These may be used alone or in combination of two or more. Among these, examples of the ionic direct dyes include acid dyes and basic dyes. These may be used alone or in combination of two or more. Furthermore, examples of the nonionic direct dyes include HC dyes and disperse dyes. These may be used alone or in combination of two or more.

[0061] Examples of acid dyes include Red No. 2, Red No. 3, Red No. 102, Red No. 104, Red No. 105, Red No. 106, Red No. 201, Red No. 203, Red No. 220, Red No. 227, Red No. 230 (1), Red No. 504, Yellow No. 4, Yellow No. 5, Yellow No. 202 (1), Yellow No. 202 (2), Yellow No. 203, Yellow No. 205, Orange No. 207, Orange No. 402, Green No. 3, Green No. 204, Green No. 401, Blue No. 1, Blue No. 2, Blue No. 202, Blue No. 204, Blue No. 404, Purple No. 401, Brown No. 201, and Black No. 401. These may be used alone or in combination of two or more.

[0062] Examples of the basic dye include a basic red dye, a basic orange dye, a basic yellow dye, a basic green dye, a basic blue dye, a basic purple dye, a basic brown dye, etc. These may be used alone or in combination of two or more kinds. Among the above, examples of the basic red dye include basic red 1, basic red 2, basic red 22, basic red 46, basic red 51, basic red 76, and basic red 118. Examples of the basic orange dye include basic orange 1, basic orange 2, and basic orange 31. Examples of the basic yellow dye include basic yellow 11, basic yellow 28, basic yellow 40, basic yellow 57, and basic yellow 87. Examples of the basic green dye include basic green 1 and basic green 4. Examples of the basic blue dye include basic blue 3, basic blue 6, basic blue 7, basic blue 9, basic blue 26, basic blue 41, basic blue 47, basic blue 75, basic blue 77, basic blue 99, and basic blue 124. Examples of basic purple dyes include basic purple 1, basic purple 2, basic purple 3, basic purple 4, basic purple 14, and basic purple 16. Examples of basic brown dyes include basic brown 4, basic brown 16, and basic brown 17. These dyes may be used alone or in combination of two or more.

[0063] Examples of the HC dye include HC red dye, HC orange dye, HC yellow dye, HC blue dye, HC purple dye, etc. These may be used alone or in combination of two or more kinds. Among the above, examples of the HC red dyes include HC red 1, HC red 3, HC red 7, HC red 10, HC red 11, HC red 13, HC red 14, HC red 17, HC red 18, HC red 19, HC red 20, and HC red 21. Examples of the HC orange dyes include HC orange 1, HC orange 2, HC orange 3, HC orange 6, and HC orange 7. Examples of the HC yellow dyes include HC yellow 2, HC yellow 4, HC yellow 5, HC yellow 7, HC yellow 9, HC yellow 11, HC yellow 13, HC yellow 16, HC yellow 18, HC yellow 6, HC yellow 10, HC yellow 12, HC yellow 14, HC yellow 15, and HC yellow 19. Examples of the HC blue dyes include HC blue 2, HC blue 5, HC blue 6, HC blue 8, HC blue 9, HC blue 10, HC blue 11, HC blue 12, HC blue 13, HC blue 14, HC blue 15, HC blue 16, HC blue 18, HC blue 19, and HC blue 20. Examples of the HC purple dyes include HC purple 1, HC purple 2, HC purple 3, and HC purple 4. These may be used alone or in combination of two or more.

[0064] Examples of disperse dyes include Disperse Black 9, Disperse Blue 1, Disperse Blue 3, Disperse Blue 7, Disperse Brown 4, Disperse Orange 3, Disperse Red 11, Disperse Red 15, Disperse Red 17, Disperse Violet 1, Disperse Violet 4, and Disperse Violet 15. These may be used alone or in combination of two or more.

[0065] Other examples include nitro dyes such as 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, picramic acid, picric acid, and salts thereof, carotenoid dyes, anthraquinone dyes, flavonoid dyes (anthocyanin dyes, chalcone dyes, flavone dyes), polyphenine dyes, diketone dyes, betacyanin dyes, and azophyllon dyes. Specifically, natural dyes such as madder pigment, extracted carotene, cochineal pigment, lac pigment, red cabbage pigment, perilla pigment, purple corn pigment, elderberry pigment, boysenberry pigment, grape skin pigment, grape juice pigment, purple potato pigment, safflower yellow pigment, safflower red pigment, sorghum pigment, onion pigment, cacao pigment, sandalwood pigment, spirulina blue pigment, fluorophyll, bee red, red yeast rice pigment, indigo, gardenia pigment, turmeric pigment, annatto pigment, copper chlorophyllin sodium, paprika pigment, lac pigment, henna, rutin, safflower red, etc. These may be used alone or in combination of two or more kinds.

[0066] The content ratio of the dye is not limited, but when the entire first agent is taken as 100% by mass, the lower limit can be 0.01% by mass or more, 0.1% by mass or more, and further 0.5% by mass or more. On the other hand, the upper limit can be 15% by mass or less, 10% by mass or less, or 6% by mass or less. These upper and lower limit values ​​can be arbitrarily combined. For example, it can be 0.01 to 15% by mass, 0.1 to 10% by mass, or 0.5 to 6% by mass.

[0067] <3-3> Solubilizers The solubilizer is a component that contributes to solubilizing each component contained in the first agent. Examples of the solubilizer include water, alcohols, and the like. These may be used alone or in combination of two or more. The use of water is preferred from the viewpoint of exhibiting excellent solubility.

[0068] Examples of the alcohols include monohydric alcohols, polyhydric alcohols, ether alcohols, etc. These may be used alone or in combination of two or more kinds.

[0069] Of the monohydric alcohols, the monohydric lower alcohol preferably has 5 or less carbon atoms, and examples thereof include ethanol, n-propanol, isopropanol, etc. These may be used alone or in combination of two or more kinds. Among the monohydric alcohols, examples of the monohydric aromatic alcohol include benzyl alcohol, 2-phenylethyl alcohol, cinnamyl alcohol, phenylpropanol, 1-phenoxy-2-propanol, phenyl glycol, α-methylbenzyl alcohol, dimethylbenzyl carbinol, benzyloxyethanol, phenoxyethanol, phenoxyisopropanol, p-anisyl alcohol, etc. These may be used alone or in combination of two or more. Furthermore, as the ether alcohol which is a monohydric alcohol and has an ether bond, an ether alcohol having a total of three or more hydroxy groups and ether bonds is preferable, and specific examples thereof include ethoxydiglycol (diethylene glycol monoethyl ether), methoxydiglycol (diethylene glycol monomethyl ether), diethylene glycol monobutyl ether, etc.

[0070] Among the above, the monohydric alcohol is preferably an ether alcohol, more preferably an ether alcohol having a total of three or more hydroxy groups and ether bonds, further preferably ethoxydiglycol and / or methoxydiglycol, and particularly preferably ethoxydiglycol.

[0071] The valence of the polyhydric alcohol is not limited and may be 6 or more, but from the viewpoint of improving the solubility or dispersibility in the dye component, a valence of 2 to 5 is preferable. Furthermore, the number of carbon atoms of the polyhydric alcohol is not limited and, in the case of a hydrocarbon group, may be 6 or more, but from the viewpoint of improving the solubility or dispersibility in the dye component, a carbon number of 2 to 5 is preferable. Specifically, alkanediols such as ethanediol, propanediol, butanediol, and pentanediol; oxydialkanols such as oxydiethanol and oxydipropanol; ethanediols such as ethylene glycol; propanediols such as propane-1,2-diol and trimethylene glycol; butanediols such as 1,2-butanediol, 1,3-butanediol, and 1,4-butanediol; pentanediols such as isopentyldiol, 1,5-pentanediol, and 1,2-pentanediol; alkanetriols such as glycerin, butanetriol (1,2,3-butanetriol, 1,2,4-butanetriol, etc.), and pentanetriol (1,2,3-pentanetriol, 1,2,5-pentanetriol, 2,3,4-pentanetriol, etc.). These may be used alone or in combination of two or more.

[0072] Furthermore, examples of ether alcohols that are polyhydric alcohols and have an ether bond include polyalkylene glycols. Examples of polyalkylene glycols include polyethylene glycols. The average molecular weight (number average molecular weight) of polyethylene glycol is not limited, but is usually 100 to 5000, preferably 100 to 2500, and more preferably 100 to 2000.

[0073] <3-4> Water-soluble polymer Examples of the water-soluble polymer include water-soluble natural polymers, water-soluble semi-synthetic polymers, water-soluble synthetic polymers, water-soluble inorganic polymers, etc. These may be used alone or in combination of two or more. The water-soluble polymer may be blended, for example, for the purpose of adjusting the viscosity of the first agent and further the hair cosmetic agent.

[0074] Examples of natural water-soluble polymers include guar gum, locust bean gum, quince seed, carrageenan, galactan, gum arabic, tragacanth gum, pectin, mannan, xanthan gum, dextran, succinoglucan, curdlan, hyaluronic acid, gelatin, casein, albumin, collagen, dextrin, etc. These may be used alone or in combination of two or more.

[0075] Examples of semi-synthetic water-soluble polymers include cellulose-based water-soluble polymers, cationic guar gum, starch phosphate esters, propylene glycol alginate esters, alginates, etc. These may be used alone or in combination of two or more. Examples of the cellulose-based water-soluble polymer include hydroxyethyl cellulose, hydroxyethyl cellulose dimethyl diallyl ammonium chloride, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, cationic cellulose, etc. These may be used alone or in combination of two or more.

[0076] Examples of synthetic water-soluble polymers include polyvinyl alcohol (PVA), polyvinyl butyral, polyvinyl methyl ether, carboxyvinyl polymer, polysodium acrylate, polyacrylamide, polyethylene oxide, ethylene oxide-propylene oxide block copolymer, acrylic acid / alkyl acrylate copolymer, polydimethylmethylene piperidinium chloride, polyethylene glycol, and highly polymerized polyethylene glycol. Other examples include a half ester of itaconic acid and POE alkyl ether, an ester of methacrylic acid and POE alkyl ether, and a copolymer consisting of at least one monomer selected from acrylic acid, methacrylic acid, and their alkyl esters. These may be used alone or in combination of two or more.

[0077] When the first agent contains a water-soluble polymer, the content ratio of the water-soluble polymer in the entire first agent (100% by mass) is not limited, but the lower limit can be 0.01% by mass or more, further 0.05% by mass or more, and further 0.1% by mass or more. The upper limit can be 3% by mass or less, further preferably 2% by mass or less, and further preferably 1% by mass or less. The above upper and lower limits can be combined with each other. That is, for example, it can be 0.01 to 3% by mass, further 0.05 to 2% by mass, and further 0.1 to 1% by mass.

[0078] <3-5> 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. Among these, phenoxyethanol can be preferably used in the present hair dye. When a preservative is included, its content is not limited, but can be 0.01% by mass or more, or 0.1% by mass or more, based on 100% by mass of the entire first agent, and is usually 3% by mass or less.

[0079] <3-6> Antioxidants Examples of the antioxidant include ascorbic acid (L-ascorbic acid), anhydrous sodium sulfite, etc. These may be used alone or in combination of two or more.

[0080] <3-7> Stabilizers Examples of the stabilizer 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.

[0081] <3-8> Plant extracts Examples of plant extracts include avocado extract, amacha extract, aloe extract, apricot extract, apricot kernel extract, ginkgo extract, fennel extract, turmeric extract, scutellaria extract, phellodendron bark extract, hypericum 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 extract, perilla extract, linden extract, peony extract, ginger extract, and shiitake extract. Examples of such extracts include birch extract, horsetail extract, sage extract, hawthorn extract, thyme extract, tea extract, clove extract, dokudami 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, and Roman chamomile extract. These may be used alone or in combination of two or more.

[0082] <3-9> Further ingredients In addition to the above, it may further contain fragrances, sugars (maltose, glycosyl trehalose, N-acetylglucosamine, etc.), inorganic salts (sodium chloride, sodium carbonate, etc.), buffers (sodium phosphate, etc.), chelating agents (edetic acid and its salts, diethylenetriaminepentaacetic acid and its salts, hydroxyethanediphosphonic acid and its salts, etc.), vitamins, colorants, UV absorbers, and at least one ingredient selected from those listed in the "Standards for Quasi-Drug Raw Materials" (revised in March 2021, Yakuji Nipposha). These may be used alone or in combination of two or more.

[0083] <3-10> Dosage form, properties, and packaging material The dosage form of the first agent (dosage form at 25°C) is not limited, but can be, for example, a cream, emulsion, dispersion, paste, foam, liquid, aqueous solution, gel, solid, etc. The properties are not limited, and the specific viscosity is not limited, but can be, for example, 1 to 300,000 mPa·s. When the first agent is adjusted to a viscous liquid, it can be, for example, 2,000 to 300,000 mPa·s. The lower limit of this viscosity can be 2,000 mPa·s or more, 4,000 mPa·s or more, or 10,000 mPa·s or more. On the other hand, the upper limit of the viscosity can be 250,000 mPa·s or less, 225,000 mPa·s or less, or 200,000 mPa·s or less. The above upper and lower limits can be combined with each other. That is, for example, it can be 2,000 to 250,000 mPa·s, 4,000 to 225,000 mPa·s, or 10,000 to 200,000 mPa·s. The above viscosity is measured at 25° C. using a B-type viscometer. The packaging material that contains the first agent is not limited, but may be a tube-shaped packaging material, a pump-type packaging material, a liquid storage container, or the like.

[0084] [3] Second agent The second agent is (B 2) It contains oily components and forms a water-in-oil (W / O) emulsion.

[0085] <1> Oily component (B 2 ) The second agent is an oil-based component (B 2 ) Oily components (B 2 ) can improve the formulation stability, improve the feel, and improve the application feel. Oily component (B 2 ) as higher alcohol (B 2 -1), silicone (B 2 -2), hydrocarbons, oils and fats, waxes, higher fatty acids, esters, etc. These may be used alone or in combination of two or more. Among these, the oily component (B 2 ) as higher alcohol (B 2 -1) and silicone (B 2 -2) is preferred. By using these oily ingredients, it is easy to prepare a cream with a suitable viscosity when mixed. In addition, it is also preferred in terms of the feel that can be obtained.

[0086] Among the oily components, higher alcohol (B 2 As the -1), an alcohol having a carbon chain with 6 or more carbon atoms can be used. For example, it includes higher alcohols having 8 to 40 carbon atoms. In addition, the skeleton may be saturated or unsaturated, and may be a straight chain or a branched chain. Specific examples include lauryl alcohol, myristyl alcohol, stearyl alcohol, cetyl alcohol, cetostearyl alcohol, eicosanol, arachyl alcohol, behenyl alcohol, docosanol, octacosanol, triacontanol, tetratriacontanol, isostearyl alcohol, 2-hexyldecanol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, lanolin alcohol, phytosterol, cholesterol, etc. These may be used alone or in combination of two or more.

[0087] Among these, the oily components (B 2 As the alcohols (B), higher alcohols having a branched structure such as isostearyl alcohol, 2-hexyldecanol, 2-octyldodecanol, and decyltetradecanol are preferred in terms of feel, and higher alcohols having a branched hydrocarbon chain with 10 or more carbon atoms are more preferred, higher alcohols having a branched hydrocarbon chain with 15 or more carbon atoms are more preferred, and higher alcohols having a saturated and branched hydrocarbon chain with 15 or more carbon atoms are more preferred. More specifically, 2-octyldodecanol (B 2 -1-1), isostearyl alcohol (B 2 These may be used alone or in combination of two or more, but it is particularly preferable to use them in combination. That is, 2-octyldodecanol (B 2 -1-1) and isostearyl alcohol (B 2 It is preferable to use it in combination with -1-2).

[0088] In the second agent, the oil component (B 2 ) as higher alcohol (B 2 -1), and further, higher alcohol (B 2 -1), 2-octyldodecanol (B 2 -1-1) and isostearyl alcohol (B 2 When used in combination with -1-2), the ratio of their contents [(B 2 -1-1) / (B 2 -1-2)] is not limited, but the lower limit can be 0.1 or more, further 0.2 or more, further 0.22 or more, further 0.25 or more, further 0.28 or more, further 0.30 or more, and further 0.32 or more. On the other hand, the upper limit can be 10 or less, further 5 or less, further 4.5 or less, further 4.0 or less, further 3.5 or less, further 3.0 or less, and further 2.5 or less. 2 -1-1) / (B 2When -1-2) is within the above range, the balance between the moist feel after application to hair and the texture that gives a sense of firmness can be well adjusted. The upper and lower limits described above can be combined in various ways. That is, for example, it can be 0.1 to 10, further 0.2 to 5, further 0.22 to 4.5, further 0.25 to 4.0, further 0.28 to 3.5, further 0.30 to 3.0, and further 0.32 to 2.5.

[0089] Among the oily components, examples of fats and oils include vegetable oils (vegetable fats and oils) and animal oils (animal fats and oils). Examples of vegetable oils include camellia oil, rice bran oil, rice germ oil, 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, tea seed oil, sasanqua oil, Argania spinosa kernel oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, cacao butter, corn oil, peanut oil, rapeseed oil, evening primrose oil, wheat germ oil, pearl barley 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.

[0090] Among the oil-based components, silicone (B 2-2) includes dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, highly polymerized silicone having an average degree of polymerization of 650 to 10,000, amino-modified silicone (aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymer (aminoethylaminopropyldimethicone) etc.), polyether-modified silicone, betaine-modified silicone, alkyl-modified silicone, alkoxy-modified silicone, mercapto-modified silicone, carboxy-modified silicone, fluorine-modified silicone, etc. These may be used alone or in combination of two or more. Among these, methylphenylpolysiloxane is preferred in the second agent, from the viewpoint that the formulation stability of the second agent is ensured while the blending amount is high from low to high blending, and that when blended in high amounts, it is possible to give the hair after treatment a good feel and a good shine.

[0091] Among the oily components, examples of hydrocarbons include liquid paraffin (mineral oil), liquid isoparaffin, paraffin (paraffin wax), olefin oligomer, polyisobutene, hydrogenated polyisobutene, synthetic squalane, squalene, squalane (hydrogenated squalene), polybutene, polyethylene (polyethylene wax), microcrystalline wax, petrolatum, ozokerite, ceresin, limonene, turpentine, etc. These may be used alone or in combination of two or more.

[0092] Among the oily components, examples of waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, spermaceti wax, rice bran wax, sugarcane wax, palm wax, montan wax, cotton wax, bayberry wax, ivory wax, kapok wax, shellac wax, etc. These may be used alone or in combination of two or more.

[0093] Among the oily components, examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, lanolin fatty acid, etc. These may be used alone or in combination of two or more.

[0094] Among the oily components, the esters are 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, myristate, and ethylhexyl palmitate. Examples of the lactate include myristyl lactate, decyl oleate, hexyldecyl dimethyloctanoate, triisodecyl myristate, isostearyl myristate, PPG-3 benzyl ether myristate, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, fatty acid (C10-30) (cholesteryl / lanosteryl), lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cetyl caprate, diisostearyl malate, and lanolin derivatives. These may be used alone or in combination of two or more.

[0095] The second agent is an oil-based component (B 2 ), the oil component (B) in the second agent as a whole 100% by mass 2The content ratio of ) is not limited, but the lower limit can be 10% by mass or more, further 18% by mass or more, further 20% by mass or more, and further 22% by mass or more. The upper limit can be 50% by mass or less, further preferably 30% by mass or less, further preferably 28% by mass or less, and further preferably 27% by mass or less. The above upper and lower limits can be combined with each other. That is, for example, it can be 10 to 50% by mass, further 18 to 30% by mass, further 20 to 28% by mass, and further 22 to 27% by mass.

[0096] <2> Ingredients other than oil-based ingredients The second agent contains the above-mentioned oil component (B 2 ) may contain other ingredients. Examples of other ingredients include oxidizing agents, polymeric compounds, surfactants, stabilizers, preservatives, antioxidants, dispersants, protein derivatives and amino acids, chelating agents, plant extracts, plant extracts, herbal extracts, vitamins, pigments, fragrances, ultraviolet absorbers, etc. These may be used alone or in combination of two or more.

[0097] 2-1. Oxidizing agents When the hair cosmetic composition is a hair dye, bleach, destaining agent, destaining agent, etc., the second agent may contain an oxidizing agent. The oxidizing agent is a component that exerts an oxidizing effect, and the oxidizing effect is usually exerted by mixing with the first agent. The oxidizing agent is contained in the second agent, but is preferably not contained in the first agent.

[0098] The oxidizing agent may be any type that can exert an oxidizing effect, and examples thereof include peroxide-based oxidizing agents. Peroxide-based oxidizing agents are compounds that have a structure represented by "-OO-". In inorganic compounds, this structure is similar to the peroxide ion (O 2 2- In organic compounds, they are included as peroxide structures (-OO-) and percarboxylic acid structures (-CO-OO-), etc. These may be used alone or in combination of two or more.

[0099] Among the above, examples of inorganic compounds among the peroxide-based oxidizing agents include peroxides such as hydrogen peroxide (which may be used as inclusions or adducts of hydrogen peroxide, such as urea peroxide, melamine peroxide, hydrogen peroxide adducts of phosphates, and hydrogen peroxide adducts of pyrophosphates); peroxide salts (alkali metal salts such as potassium salts and sodium salts, alkaline earth salts such as magnesium salts, calcium salts, strontium salts, and barium salts, and zinc salts); percarbonates (alkali metal salts such as potassium salts and sodium salts); perborates (alkali metal salts such as potassium salts and sodium salts); permanganates (alkali metal salts such as potassium salts and sodium salts, alkaline earth salts such as magnesium salts, calcium salts, strontium salts, and barium salts), and the like. These may be used alone or in combination of two or more.

[0100] In addition, organic compounds among the peroxide-based oxidizing agents include percarboxylic acids such as performic acid, peracetic acid, and perbenzoic acid, and their salts. Examples of salts of percarboxylic acids include alkali metal salts such as potassium salts and sodium salts. These may be used alone or in combination of two or more. Furthermore, non-peroxide oxidizing agents (i.e., compounds not containing a structure represented by "-OO-") include bromates (alkali metal salts such as potassium salts and sodium salts), etc. These may be used alone or in combination of two or more.

[0101] When the second agent contains an oxidizing agent, the content of the oxidizing agent in the entire second agent (100% by mass) is not limited, but the lower limit can be 1% by mass or more, further 3% by mass or more, further 5% by mass or more, and further 8% by mass or more. The upper limit can be 40% by mass or less, further preferably 30% by mass or less, further preferably 25% by mass or less, and further preferably 20% by mass or less. The above upper and lower limits can be combined. That is, for example, it can be 1 to 40% by mass, further 3 to 30% by mass, and further 5 to 25% by mass.

[0102] <2-2> Polymer compounds The polymer compound is a compound with a high molecular weight. The inclusion of the polymer compound can improve the formulation stability of the agent (second agent) containing an oxidizing agent in a W / O type emulsified state. The structure of the polymer compound is not limited, but is usually an organic compound having a carbon skeleton (i.e., the polymer compound (A) usually does not contain silicone (C)). In addition, the molecular weight is not limited, but is usually 10,000 or more.

[0103] Polymer compounds can be broadly classified into oil-soluble polymer compounds and water-soluble polymer compounds, and the second agent preferably contains at least one of these. That is, the polymer compound preferably contains an oil-soluble polymer compound and / or a water-soluble polymer compound.

[0104] The oil-soluble polymer compound is a polymer compound that dissolves in the oil phase of the second agent, which is a W / O type emulsion (i.e., dissolves in the main component of the oil phase). Examples of the oil-soluble polymer compound include cellulose derivatives (oil-soluble cellulose derivatives), starch derivatives (oil-soluble starch derivatives), higher fatty acid esters, vinyl polymers (oil-soluble vinyl polymers), and acrylic polymers (oil-soluble acrylic polymers). These may be used alone or in combination of two or more. In addition, these are preferably nonionic polymer compounds (nonionic oil-soluble polymer compounds).

[0105] Examples of cellulose derivatives include cellulose ether (oil-soluble cellulose ether), cellulose ester, etc. These may be used alone or in combination of two or more. As described above, these are preferably nonionic. That is, for example, nonionic cellulose ether is preferable. Among these, examples of the cellulose ether include methyl cellulose, ethyl cellulose, ethyl methyl cellulose, etc. These may be used alone or in combination of two or more kinds. Among the above, examples of starch derivatives include starch fatty acid esters, dextrin fatty acid esters, etc. More specifically, examples include dextrin palmitate, dextrin ethylhexanoate, etc. These may be used alone or in combination of two or more. Among the above, examples of higher fatty acid esters include glyceryl behenate / eicosandioate, glyceryl behenate, glyceryl eicosandioate, etc. These may be used alone or in combination of two or more.

[0106] The water-soluble polymer compound is a polymer compound that dissolves in the aqueous phase of the second agent, which is a W / O type emulsion (i.e., dissolves in water). Examples of the water-soluble polymer compound include cellulose derivatives (water-soluble cellulose derivatives), vinyl polymers (water-soluble vinyl polymers), and acrylic polymers (water-soluble acrylic polymers). These may be used alone or in combination of two or more.

[0107] Among the above, examples of the cellulose derivatives include cellulose ether (water-soluble cellulose ether), cellulose ester, etc. These may be used alone or in combination of two or more kinds. Among these, examples of the cellulose ether include carboxymethyl cellulose, carboxyethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, etc. These may be used alone or in combination of two or more kinds. The above-mentioned cellulose ether may be any of cationic cellulose ether, anionic cellulose ether, amphoteric cellulose ether, and nonionic cellulose ether, and these may be used alone or in combination of two or more kinds, but in the second agent, cationic cellulose ether (cationic water-soluble cellulose ether) is particularly preferred from the viewpoint of improving the feel. Examples of cationic cellulose ether include O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride (polyquaternium-10) and the like.

[0108] Other examples of water-soluble polymers that have polysaccharides other than cellulose in their structure and have cationic properties include dextran hydroxypropyltrimonium chloride. Examples of acrylic polymers include polyquaternium-11 (vinylpyrrolidone·N,N-dimethylaminoethyl methacrylic acid copolymer sulfate solution). These may be used alone or in combination of two or more.

[0109] When the second agent contains a polymer compound, the content ratio of the polymer compound in the entire second agent (100% by mass) is not limited, but the lower limit can be 0.01% by mass or more, further 0.1% by mass or more, further 0.5% by mass or more, and further 1.0% by mass or more. The upper limit can be 20% by mass or less, further preferably 10% by mass or less, further preferably 5% by mass or less, and further preferably 3.0% by mass or less. The above upper and lower limits can be combined. That is, for example, it can be 0.01 to 20% by mass, further 0.1 to 10% by mass, further 0.5 to 5% by mass, and further 1.0 to 3.0% by mass.

[0110] The second agent is a polymer compound, an oil-soluble polymer compound (P O ) and water-soluble polymer compounds (P W ), the ratio of the content of each polymer compound in the entire second agent (100 mass %) O ) / (P W ) is not limited, but its lower limit can be 0.1 or more, further 0.5 or more, further 1.0 or more, and further 1.5 or more. Also, its upper limit can be 10 or less, further preferably 5 or less, further preferably 4 or less, and further preferably 3 or less. The above upper and lower limits can be combined with each other. That is, for example, it can be 0.1 to 10, further 0.5 to 5, further 1.0 to 4, and further 1.5 to 3.

[0111] 2-3 Surfactants Examples of the surfactant include cationic surfactants, anionic surfactants, nonionic surfactants, and amphoteric surfactants. Examples of these surfactants include the same surfactants as those in the first agent described above. These surfactants may be used alone or in combination of two or more. The second agent may contain a surfactant, but may be substantially free of a surfactant. That is, for example, the upper limit of the surfactant content in the entire second agent (100% by mass) may be 1% by mass or less, further 0.5% by mass or less, and further 0.1% by mass or less.

[0112] <2-4> Stabilizers A stabilizer can be added to the second agent. The stability of the oxidizing agent can be improved by adding a stabilizer. Examples of stabilizers include phenoxyethanol (ethylene glycol phenyl ether), salicylic acid, salicylic acid salts, hydroxyethane diphosphonic acid, hydroxyethane diphosphonic acid salts, stannic acid, and stannic acid salts. Among these, examples of cations constituting the salt include alkali metal ions and ammonium ions. These may be used alone or in combination of two or more.

[0113] <2-5> 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. Among these, phenoxyethanol can be preferably used in the present hair dye. When a preservative is included, its content is not limited, but can be 0.01% by mass or more, or 0.1% by mass or more, based on 100% by mass of the entire first agent, and is usually 3% by mass or less.

[0114] <2-6> Antioxidants The antioxidant may be the same as the antioxidant in the first agent described above. These may be used alone or in combination of two or more kinds.

[0115] <2-7> Plant extracts Examples of the plant extract include the same antioxidants as those in the above-mentioned first agent. These may be used alone or in combination of two or more kinds.

[0116] 〈2-8〉Water When water is contained, its content is not limited, but its lower limit can be 30% by mass or more, further 35% by mass or more, and further 40% by mass or more. Also, its upper limit can be 85% by mass or less, further 80% by mass or less, and further 75% by mass or less. The above upper and lower limits can be combined with each other. That is, for example, it can be 30 to 85% by mass, further 35 to 80% by mass, and further 40 to 75% by mass.

[0117] <2-9> Further ingredients In addition to the above, it may further contain at least one ingredient selected from fragrances, sugars (maltose, glycosyl trehalose, N-acetylglucosamine, etc.), inorganic salts (sodium chloride, sodium carbonate, etc.), buffers (sodium phosphate, etc.), chelating agents (edetic acid and its salts, diethylenetriaminepentaacetic acid and its salts, hydroxyethanediphosphonic acid and its salts, etc.), vitamins, colorants, and ultraviolet absorbers, as well as those listed in the "Standards for Quasi-Drug Raw Materials" (revised in March 2021, Yakuji Nipposha). These may be used alone or in combination of two or more. Furthermore, other ingredients may also be blended in the second agent described above. In this case, the same types as above can be selected.

[0118] <2-10> Dosage form, properties, and packaging material The dosage form of the second agent (dosage form at 25°C) is not limited, but can be, for example, a cream, emulsion, dispersion, paste, foam, liquid, aqueous solution, gel, solid, etc. The properties are not limited, and the specific viscosity is not limited, but can be, for example, 1 to 300,000 mPa·s. When the second agent is adjusted to a viscous liquid, it can be, for example, 2,000 to 300,000 mPa·s. The lower limit of this viscosity can be 2,000 mPa·s or more, 4,000 mPa·s or more, or 10,000 mPa·s or more. On the other hand, the upper limit of the viscosity can be 250,000 mPa·s or less, 225,000 mPa·s or less, or 200,000 mPa·s or less. The above upper and lower limits can be combined with each other. That is, for example, it can be 2,000 to 250,000 mPa·s, 4,000 to 225,000 mPa·s, or 10,000 to 200,000 mPa·s. The above viscosity is measured at 25° C. using a B-type viscometer. The packaging material for containing the second agent is not limited, but may be a tube-shaped packaging material, a pump-type packaging material, a liquid storage container, or the like.

[0119] [4] Application of hair cosmetics The hair cosmetic agent is an agent used by mixing a first agent and a second agent. The first agent and the second agent may be mixed before being applied to the hair, or may be applied separately in sequence. An example of an embodiment in which the first agent and the second agent are mixed on a tray and the resulting mixture is used as the hair cosmetic agent. On the other hand, an example of an embodiment in which the first agent and the second agent are not mixed before being applied to the hair is an embodiment in which the first agent is applied to the hair, and then the second agent is applied to the same hair, so that the agents are mixed on the hair.

[0120] In addition, when applying the hair cosmetic agent, it can be applied to the hair using a tool such as a comb, brush, or spatula. Furthermore, it can be applied to the hair using the user's hands. Furthermore, it can be applied by operations such as impregnation (dipping), coating, and penetration. These may be used alone or in combination of two or more. Furthermore, the hair cosmetic agent may be applied to hair wet with water or warm water, or to dry hair. Incidentally, hair includes, for example, hair on the head, beard, eyebrows, body hair, and the like. In addition, the applicable biological hair is not limited, but it is suitable for use with human hair. In addition, when applied to human hair, it may be applied to hair of any condition or color. That is, it may be applied to, for example, black hair, white hair, bleached hair (black hair that has been bleached), dyed hair, and the like. In addition, application to dyed hair includes repairing, changing, adding, and the like of the color of dyed hair. EXAMPLES

[0121] The present invention will be described in more detail below with reference to examples. However, these examples are merely illustrative and are not intended to limit the present invention in any way.

[0122] [1] Preparation of the first agent The components shown below were mixed in the mass ratios shown in Tables 1 to 3 to prepare each of the first agents.

[0123] [Table 1]

[0124] [Table 2]

[0125] [Table 3]

[0126] [2] Preparation of the second agent The components shown below were mixed in the mass ratios shown in Tables 4 to 6 to prepare each of the second agents.

[0127] [Table 4]

[0128] [Table 5]

[0129] [Table 6]

[0130] [3] Evaluation of hair cosmetics <1> Evaluation of dripping prevention The first agent of each of Examples 1 to 15 and Comparative Example 1 shown in Tables 1 to 3 and the second agent of Example 1 shown in Table 4 were mixed at a mass ratio of 1:1 to obtain a mixture. Similarly, the first agent of Example 4 shown in Table 1 and the second agents of Examples 1 to 13 shown in Tables 4 to 6 were mixed at a mass ratio of 1:1 to obtain a mixture. The obtained mixture was applied to the surface of a wig (manufactured by Staffs Co., Ltd., a wig in a dry state). The amount of the mixture applied was 80 g per wig. The amount of dripping 15 minutes after application was evaluated. The evaluation was performed by five expert panelists, who selected the score that was closest to their perception in light of the following evaluation criteria (1), and the arithmetic mean value of the scores selected by the five expert panelists was calculated.

[0131] [Evaluation Criteria (1)] 5:Excellent 4: Good 3: OK 2: Somewhat poor 1: Defective

[0132] The arithmetic mean values ​​obtained above were compared with the following criteria (2), and the corresponding scores were shown in Tables 1 to 6. Those that obtained a score of 2 or more were considered to be examples. [Evaluation criteria (2)] 5: Arithmetic mean score is 4.6 or higher 4: Arithmetic mean value is 3.6 points or more and less than 4.6 points 3: Arithmetic mean value is 2.6 points or more and less than 3.6 points 2: Arithmetic mean value is 1.6 points or more and less than 2.6 points 1: Arithmetic mean value is less than 1.6 points

[0133] <2> Evaluation of clump suppression As in the above item 1, 20 g of each of the first agents of Examples 1 to 15 and Comparative Example 1 shown in Tables 1 to 3 and the second agent of Example 1 shown in Table 4 were weighed out into a dish and mixed with a brush for 10 seconds. The mixture thus obtained was visually evaluated for lumps. The evaluation was performed by five expert panelists, who selected the score that was closest to their perception in light of the following evaluation criteria (3), and the arithmetic mean of the scores selected by the five expert panelists was calculated.

[0134] [Evaluation criteria (3)] 5: No lumps are observed and the mixture is uniformly mixed. 4: Almost no lumps are observed and the mixture is almost uniform. 3: Only a few lumps are visible 2: Lumps are found here and there 1: Many lumps are observed

[0135] The arithmetic mean values ​​obtained above were compared with the following criteria (4), and the corresponding scores were shown in Tables 1 to 6. Those that obtained a score of 2 or more were considered to be examples. [Evaluation criteria (4)] 5: Arithmetic mean score is 4.6 or higher 4: Arithmetic mean value is 3.6 points or more and less than 4.6 points 3: Arithmetic mean value is 2.6 points or more and less than 3.6 points 2: Arithmetic mean value is 1.6 points or more and less than 2.6 points 1: Arithmetic mean value is less than 1.6 points

[0136] <3> Evaluation of texture Among the wig hairs to which the mixture was applied according to the above item <1>, the first agent of Example 4 shown in Table 1 and the second agents of Examples 1 to 13 shown in Tables 4 to 6 were mixed at a mass ratio of 1:1 and applied to the wig. After 20 minutes had passed since application, the wig was washed with shampoo and allowed to dry naturally. Then, the feel of the wig after drying was evaluated. The evaluation was performed by five expert panelists who confirmed the feel of the wig with their fingers, and then each expert panelist selected the score that was closest to their perception in light of the following evaluation criteria (5), and the arithmetic mean value of the scores selected by the five expert panelists was calculated.

[0137] [Evaluation criteria (5)] 5: Excellent balance of moisture and firmness, with a very pleasant feel 4: Good balance of moisture and firmness, and feels good to the touch 3: The balance between moisturizing and firmness is a little off, but the texture is good. 2: The balance between moisturizing and firmness is off, but the texture is good. 1: Bad feel

[0138] The arithmetic mean values ​​obtained above were compared with the following criteria (6), and the corresponding scores were shown in Tables 1 to 6. Those that obtained a score of 2 or more were considered to be examples. [Evaluation criteria (6)] 5: Arithmetic mean score is 4.6 or higher 4: Arithmetic mean value is 3.6 points or more and less than 4.6 points 3: Arithmetic mean value is 2.6 points or more and less than 3.6 points 2: Arithmetic mean value is 1.6 points or more and less than 2.6 points 1: Arithmetic mean value is less than 1.6 points

[0139] [4] Effects of the embodiment From a comparison between Comparative Example 1 in Table 3 and other Examples in Tables 1 to 3, the surfactant (A 1 It can be seen that a significant dripping suppression effect can be obtained by having a content of 1.5 mass % or more in the second agent. In addition, a comparison of Example 8 in Table 5 with the other Examples in Tables 4 to 6 shows that the second agent contains a higher alcohol (B 2It can be seen that the inclusion of silicone (B-1) in the second agent provides an effect of improving the feel. In addition, a comparison of Example 2 in Table 4 with the other Examples in Tables 4 to 6 shows that the inclusion of silicone (B-1) in the second agent provides an effect of improving the feel. 2 -2) provides a texture improving effect. Also, a comparison of Examples 13 to 15 in Table 3 with the other Examples in Tables 1 to 3 shows that, compared to when the first agent contains one type of surfactant, when the first agent contains two or more types of surfactants, a significant effect of suppressing dripping and clumping can be obtained.

[0140] Incidentally, the present invention is not limited to the above-mentioned specific embodiments, and various modifications can be made within the scope of the present invention depending on the purpose and application.

Claims

1. A hair cosmetic composition comprising a first agent and a second agent mixed together, The first agent has a mass ratio of 100% by mass (A １ ) containing 1.5% by mass or more of a surfactant and forming an oil-in-water type emulsion state; The second agent is ２ ) A hair cosmetic composition comprising an oily component and forming a water-in-oil type emulsified state.

2. The above (B ２ ) As an oil component, (B ２ 1) The hair cosmetic composition according to claim 1, which contains a higher alcohol.

3. The above (B ２ -1) As a higher alcohol, (B ２ -1-1) Octyldodecanol and (B ２ -1-2) Contains isostearyl alcohol, and the ratio of their contents is 0.2≦(B ２ -1-1) / (B ２ 3. The hair cosmetic composition according to claim 2, wherein -1-2)≦5.

4. When the entire second agent is taken as 100 mass%, the (B ２ 3. The hair cosmetic composition according to claim 1, wherein the content of the oily component is 18 to 30% by mass.

5. The above (B ２ ) As an oil component, (B ２ -2) The hair cosmetic composition according to claim 1 or 2, which contains silicone.

6. The above (A １ ) As the surfactant, two or more kinds of (A １ 1) The hair cosmetic composition according to claim 1 or 2, which comprises a nonionic surfactant.

7. The above (A １ -1) The nonionic surfactant is (A １ -1-1) a nonionic surfactant having an HLB of less than 10, and (A １ -1-2) a nonionic surfactant having an HLB of 10 or more.

8. The above (A １ -1-1) The content of a nonionic surfactant having an HLB of less than 10 and the １ -1-2) The content of a nonionic surfactant having an HLB of 10 or more is (A １ -1-1) / (A １ The hair cosmetic composition according to claim 7, wherein -1-2)≦1.

9. The above (A １ 3. The hair cosmetic composition according to claim 1, further comprising a polyoxyethylene alkyl ether as a surfactant.

10. The first agent is １ ) Contains oily ingredients, When the entire first agent is taken as 100 mass%, the (B １ 3. The hair cosmetic composition according to claim 1, wherein the content of the oily component is 7% by mass or more.

11. The hair cosmetic composition according to claim 1 or 2, wherein the first agent and the second agent are mixed on a tray before use.

12. 3. The hair cosmetic composition according to claim 1, which is an oxidative hair dye or a bleaching and decolorizing agent.

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