Hair cosmetic composition

Abstract

To provide a hair cosmetic composition that is capable of suppressing excessive dyeing and deterioration of tactile feel.SOLUTION: The hair cosmetic composition of the present invention is constituted as an oxidative hair dye or a hair bleaching agent, and is in an oil-in-water-drop-type emulsified state at the time of use. The hair cosmetic composition of the present invention can be a multi-agent hair cosmetic composition comprising: a first agent (A) that is an oil-in-water-drop-type emulsified state containing a liquid oily component and an alkali agent, and a second agent (A) that is an oil-in-water-drop-type emulsified state containing a liquid oily component and an oxidizing agent.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a hair cosmetic composition, and more particularly to a hair cosmetic composition that forms a water-in-oil emulsion upon use. [Background technology]

[0002] The following Patent Documents 1 to 3 are known as techniques that utilize an agent that forms a water-in-oil emulsion. [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] Japanese Patent Application Publication No. 2019-167337 Summary of the Invention [Problem to be solved by the invention]

[0004] Hair can be damaged in many ways, including damage from ultraviolet rays, damage from a hair dryer, and damage from various treatments such as hair dyeing, bleaching, decoloring, and permanent waving. It is known that damaged hair has increased hydrophilicity in the affected area. Therefore, damage can increase the hydrophilicity of the entire hair, and the degree of damage often varies within a single hair. On the other hand, water-based agents, such as those that form an oil-in-water emulsion, tend to penetrate into areas with a high degree of hydrophilicity. Therefore, when an agent that forms an oil-in-water emulsion is used in a hair dye, the ingredients tend to act more easily on damaged hair or damaged areas, resulting in excessive dyeing and a loss of feel.

[0005] The above-mentioned Patent Document 1 states that the base agent is oxidized and deteriorated by contact with air (

[0005] ), and that the container is discolored and corroded and deformed by contact with an alkaline agent (

[0006] ), the alkali agent evaporates and generates an unpleasant odor (

[0006] ), and the fragrance is contained in the oil phase, making it difficult to obtain a fragrance (

[0007] ) and other problems, a hair treatment agent (claim 1) is disclosed that is characterized by comprising a first agent that is a W / O type emulsion containing a main ingredient in the aqueous phase, and a second agent that, when mixed with the first agent, causes the first agent to phase-transform into an O / W type emulsion and / or causes demulsification of the first agent.

[0006] Patent Document 2, mentioned above, aims to solve 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] ). It discloses a hair treatment emulsion (claim 1) that is characterized by comprising a first agent that is a W / O emulsion containing 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, converts the first agent into an O / W emulsion and / or demulsifies the first agent.

[0007] The above-mentioned Patent Document 3 discloses a two-component oxidative hair dye or bleach composition (claim 1) that is intended to provide a two-component oxidative hair dye or bleach composition that can provide sufficient hair dyeing or bleaching properties and reduce skin irritation (

[0014] ). The two-component oxidative hair dye or bleach composition is composed of a first component containing an alkaline agent and a second component containing an oxidizing agent, and one of the first and second components is an oil-in-water (O / W) emulsion, and the other is a water-in-oil (W / O) emulsion.

[0008] However, although the agents disclosed in Patent Documents 1 to 3 are in a water-in-oil emulsion state before use, they all undergo phase inversion to become an oil-in-water emulsion state upon use. Furthermore, Patent Documents 1 to 3 do not mention the problems of over-dyeing or poor feel on the hair. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a hair cosmetic composition that can prevent over-dyeing of hair and deterioration in feel. [Means for solving the problem]

[0009] The present invention includes the following: [1] A hair cosmetic composition which is an oxidative hair dye or hair bleach and which is in a water-in-oil emulsion state when used. [2] The hair cosmetic composition according to the above [1], which contains (A) a liquid oily component. [3] The hair cosmetic composition according to the above [2], wherein (A) contains at least one of a higher alcohol having an unsaturated bond, a higher alcohol having a branched structure, and an ester. [4] The hair cosmetic composition according to the above [2] or [3], wherein the content of (A) is 18 to 35% by mass. [5] The hair cosmetic composition according to any one of [1] to [4] above, which contains (B) a polymer (excluding the above-mentioned (A)). [6] The hair cosmetic composition according to the above [5], wherein the (B) polymer is an oil-soluble polymer. [7] The hair cosmetic composition according to the above item [1], which is a multi-component oxidative hair dye or hair bleach comprising the following first agent and the following second agent: The first agent is a water-in-oil type emulsion agent containing (A) a liquid oily component and an alkaline agent. The second agent is a water-in-oil type emulsion agent containing (A) a liquid oily component and an oxidizing agent. [8] The hair cosmetic composition according to the above [7], wherein the first agent and the second agent contain a (B) polymer (excluding the (A)). [Effects of the Invention]

[0010] The hair cosmetic composition of the present invention can prevent over-dyeing and loss of feel to the touch of hair. Specifically, when the hair cosmetic composition is a hair dye, over-dyeing and loss of feel to the touch of hair can be prevented, and when the hair cosmetic composition is a bleach, loss of feel to the touch of hair can be prevented. DETAILED DESCRIPTION OF THE INVENTION

[0011] The present invention will be described in detail below. Unless otherwise specified, "%" means "% by mass", "parts" means "parts by mass", and the notation "X to Y" means "at least X and at most Y". In addition, for the names of some compounds, names based on the Japan Cosmetic Industry Association's ingredient labeling list or INCI (International Nomenclature of Cosmetic Ingredients) will be used. Furthermore, in the names of some compounds, polyoxyalkylene chains are sometimes abbreviated as "POE" for polyoxyethylene chains and "POP" for polyoxypropylene chains. The numbers in parentheses following these abbreviations indicate the number of moles added. Furthermore, (meth)acrylic acid refers to acrylic acid or methacrylic acid.

[0012] The hair cosmetic composition of the present invention is configured as an oxidative hair dye or hair bleach, and is characterized by being in a water-in-oil emulsion state when used.

[0013] Furthermore, the hair cosmetic composition of the present invention exhibits a water-in-oil (hereinafter simply referred to as "W / O") emulsion state upon use, thereby preventing over-dyeing and loss of hair feel. Over-dyeing, which is particularly likely to occur when the hair cosmetic composition is used on damaged hair, can be significantly prevented. While the mechanism by which this effect is achieved is unclear, it is believed to be due to the ability to reduce penetration of the active ingredient into damaged areas (which may be partial or complete) that are more hydrophilic than undamaged areas. Examples of such damage include damage caused by ultraviolet rays, damage caused by a hair dryer, damage caused by hair dyeing treatments, damage caused by bleaching treatments, damage caused by dedying treatments, and damage caused by permanent wave treatments. These may be used alone or in combination. On the other hand, the hair cosmetic composition can also suppress deterioration in the feel of hair during use (when rinsing) and after use (after drying). More specifically, it can improve the ease of running fingers through hair, improve the moist feeling, and improve the firmness and strength of hair. The mechanism by which these effects are achieved is also unclear, but is thought to be similar to the mechanism that causes over-dyeing of hair.

[0014] Furthermore, a water-in-oil (W / O) emulsion is an emulsified state in which an oil-based component forms a continuous phase and an aqueous component is dispersed within the continuous phase. That is, it can be said that the emulsion state is one in which the oil-based component forms an outer phase and the aqueous component forms an inner phase. The W / O emulsion state can be determined in any way, but for example, when an agent is dropped into water and stirred (lightly stirred), if the agent does not diffuse into the water and remains there, it can be determined that the agent is in a W / O emulsion state. On the other hand, an oil-in-water emulsion (hereinafter simply referred to as "O / W type") is an emulsion state in which an aqueous component forms a continuous phase and an oil component is dispersed within the continuous phase. That is, it can be said that this is an emulsion state in which an outer phase is formed by the aqueous component and an inner phase is formed by the oil component. Note that an O / W type emulsion state may be determined in any way, but for example, when an 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 type emulsion state.

[0015] "In a W / O emulsion state upon use" means that the composition is in a W / O emulsion state when it begins to act on hair as an oxidative hair dye or hair bleach. Therefore, when the hair cosmetic composition of the present invention is a single-component type, the hair cosmetic composition can usually be obtained in a W / O emulsion state upon use by removing the hair cosmetic composition from the container. On the other hand, when the hair cosmetic composition of the present invention is a multi-component type, the hair cosmetic composition can be obtained in a W / O emulsion state upon use by mixing the individually contained components (e.g., the first component, the second component, etc.). In this case, the mixing may be performed before application (spraying, etc.) to hair, or the components may be mixed on the hair by applying each component to the hair.

[0016] The hair cosmetic composition of the present invention may contain any component as long as it functions as an oxidative hair dye or hair bleach. However, typically, oxidative hair dyes contain three components: an oxidizing agent, an alkaline agent, and a dye, while hair bleaches contain an oxidizing agent and an alkaline agent. These components may all be contained in one component, or may be contained separately in multiple components. That is, the hair cosmetic composition may be a multi-component type, including a two-component type, or a single-component type. In addition to the oxidizing agent, alkaline agent, and dye, the hair cosmetic composition of the present invention may contain a liquid oily component (A) and a polymer (B) (excluding the liquid oily component). These components (A) and (B) may be used alone or in combination of two or more. Furthermore, these components (A) and (B) may all be contained in one agent, or may be contained separately in multiple agents.

[0017] (1) Liquid oily component (A) The liquid oily component (A) is an oily component that is liquid at room temperature (particularly 25°C). Liquid means that it has fluidity at room temperature. The liquid oily component (A) can be suitably used to obtain a hair cosmetic composition that becomes a W / O type emulsion upon use. Furthermore, the use of the liquid oily component (A) can improve the ease of rinsing. That is, while the use of a hair cosmetic composition in a W / O type emulsion tends to leave a sticky or viscous feeling, the use of the liquid oily component (A) can improve the rinsing performance.

[0018] The specific viscosity of the liquid oil component (A) is not limited, but for example, the viscosity measured using a Brookfield viscometer equipped with a No. 3 rotor at 25°C, a rotation speed of 12 rpm, and a measurement time of 60 seconds can be 1,000 mPa·s or less. This viscosity is preferably 750 mPa·s or less, more preferably 500 mPa·s or less, and even more preferably 250 mPa·s or less. On the other hand, this viscosity is preferably 1 mPa·s or more, more preferably 3 mPa·s or more, even more preferably 4 mPa·s or more, and even more preferably 5 mPa·s or more. These values ​​can be combined arbitrarily. That is, the viscosity is preferably 1 to 1,000 mPa·s, more preferably 3 to 750 mPa·s, even more preferably 4 to 500 mPa·s, and even more preferably 5 to 250 mPa·s.

[0019] The liquid oily component (A) is not limited other than being liquid, and examples thereof include higher alcohols (liquid higher alcohols), esters (liquid esters), silicones (liquid silicones), hydrocarbons (liquid hydrocarbons), oils and fats (liquid oils and fats), and higher fatty acids (liquid higher fatty acids). These may be used alone or in combination of two or more. Among these, higher alcohols and / or esters are preferred, and higher alcohols and esters are particularly preferred. These can realize a hair cosmetic composition that exhibits a W / O type emulsion state during use while also making the hair cosmetic composition easy to pour.

[0020] When the hair cosmetic composition contains a liquid oily component (A), the content of the liquid oily component (A) is not limited, but is preferably 10% by mass or more, more preferably 13% by mass or more, even more preferably 15% by mass or more, and even more preferably 18% by mass or more, based on 100% by mass of the total hair cosmetic composition at the time of use. On the other hand, it is preferably 43% by mass or less, even more preferably 40% by mass or less, even more preferably 38% by mass or less, and even more preferably 35% by mass or less. The above values ​​can be combined. That is, it is preferably 10 to 43% by mass, even more preferably 13 to 40% by mass, even more preferably 15 to 38% by mass, and even more preferably 18 to 35% by mass.

[0021] As mentioned above, the hair cosmetic composition may be either a single-component or a multiple-component. In the case of a multiple-component hair cosmetic composition, the content of the liquid oily component (A) in the agent containing the liquid oily component (A) (e.g., the first or second agent of a multiple-component hair cosmetic composition) is not limited, but is preferably 10% by mass or more, more preferably 13% by mass or more, even more preferably 15% by mass or more, and even more preferably 18% by mass or more, based on 100% by mass of the entire agent containing the liquid oily component (A). On the other hand, it is preferably 43% by mass or less, even more preferably 40% by mass or less, even more preferably 38% by mass or less, and even more preferably 35% by mass or less. The above values ​​can be combined. That is, 10 to 43% by mass is preferred, even more preferably 13 to 40% by mass, even more preferably 15 to 38% by mass, and even more preferably 18 to 35% by mass.

[0022] (1-1) Higher alcohol Of the liquid oily component (A) described above, the higher alcohol may 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 may be saturated or unsaturated (i.e., higher alcohols having unsaturated bonds), and may be linear or branched (i.e., higher alcohols having a branched structure). Specific examples include octyldodecanol, isostearyl alcohol, lauryl alcohol, oleyl alcohol, 2-hexyldecanol, and decyltetradecanol. These may be used alone or in combination of two or more.

[0023] Among these, from the viewpoint of obtaining excellent formulation stability, and in particular, from the viewpoint of obtaining a liquid oily component (A) with lower viscosity, higher alcohols having a branched structure (branched higher alcohols) (A-1) are preferred (higher alcohols having a branched structure in the hydrocarbon chain are preferred), and among these, octyldodecanol and / or isostearyl alcohol are preferred. Furthermore, when branched higher alcohols are contained, it is preferable to contain two or more types rather than only one. Therefore, among the above, octyldodecanol and isostearyl alcohol are more preferred. These branched higher alcohols (A-1) can more significantly improve the ease of rinsing after use of a hair cosmetic composition that exhibits a W / O type emulsion upon use. Furthermore, when the hair cosmetic composition (a hair cosmetic composition that exhibits a W / O type emulsion upon use) is a multi-component type obtained by mixing two or more individual components that exhibit a W / O type emulsion upon use, the mixability can be improved. That is, it is possible to more easily form a dispersed mixed state of the two individual agents that exhibit a W / O type emulsion state.

[0024] Furthermore, when the branched higher alcohol (A-1) contains both octyldodecanol and isostearyl alcohol, the hair cosmetic composition of the present invention can improve the moist feeling of hair and improve the bounce and body of hair after application. These effects are particularly pronounced when ODN / ISA is ≥ 2, where "ODN" (mass%) is the ratio of octyldodecanol to the total (100 mass%) of octyldodecanol and isostearyl alcohol, and "ISA" (mass%) is the ratio of isostearyl alcohol. On the other hand, when ODN / ISA is < 2, the hair can be particularly well-improved in bounce and body. Octyldodecanol also contributes to the ease of rinsing and the mixability of ingredients when producing the hair cosmetic composition. Furthermore, isostearyl alcohol contributes to the formulation stability of the hair cosmetic composition. Therefore, octyldodecanol and isostearyl alcohol can be blended in consideration of the contribution to the feel and the effects of each of the above components.

[0025] When a higher alcohol (particularly a branched higher alcohol (A-1)) is contained as the liquid oily component (A), the content of the higher alcohol is not limited, but is preferably 1% by mass or more, more preferably 2% by mass or more, more preferably 3% by mass or more, more preferably 5% by mass or more, and even more preferably 7% by mass or more, based on 100% by mass of the total hair cosmetic composition at the time of use. On the other hand, it is preferably 35% by mass or less, more preferably 30% by mass or less, more preferably 25% by mass or less, and even more preferably 20% by mass or less. The above values ​​can be combined. That is, it is preferably 1 to 35% by mass, more preferably 2 to 30% by mass, more preferably 3 to 25% by mass, more preferably 5 to 25% by mass, and even more preferably 7 to 20% by mass.

[0026] As mentioned above, the liquid oil component (A) can be higher alcohols, esters, silicones, hydrocarbons, fats and oils, higher fatty acids, etc., but among these, it is preferable that the content of higher alcohols is the largest.Furthermore, among higher alcohols, it is preferable that the content of branched higher alcohols (A-1) is the largest, and furthermore, it is preferable that the content of octyldodecanol or isostearyl alcohol is the largest, and it is particularly preferable that the content of octyldodecanol is the largest as the liquid oil component (A).

[0027] Furthermore, as described above, when the hair cosmetic composition is a multiple-component type, the content of the higher alcohol (particularly the branched higher alcohol (A-1)) in the agent (e.g., the first or second agent of the multiple-component hair cosmetic composition) containing the liquid oily component (A) is not limited. However, when the entire agent containing the liquid oily component (A) is taken as 100% by mass, the content is preferably 1% by mass or more, more preferably 2% by mass or more, even more preferably 3% by mass or more, even more preferably 5% by mass or more, and even more preferably 7% by mass or more. On the other hand, the content is preferably 35% by mass or less, even more preferably 30% by mass or less, even more preferably 25% by mass or less, and even more preferably 20% by mass or less. The above values ​​can be combined with each other. That is, the content is preferably 1 to 35% by mass, even more preferably 2 to 30% by mass, even more preferably 3 to 25% by mass, even more preferably 5 to 25% by mass, and even more preferably 7 to 20% by mass.

[0028] (1-2) Ester Of the liquid oily components (A) described above, examples of the ester (A-2) include glyceryl tri-2-ethylhexanoate, cetyl 2-ethylhexanoate (cetyl ethylhexanoate), 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, myristyl myristate, isotridecyl myristate, isostearyl myristate, PPG-3 benzyl ether myristate, isopropyl palmitate, ethylhexyl palmitate, palmitic Examples of the hydroxypropyl hydroxypropyl methyl acrylate include 2-ethylhexyl ester, butyl stearate, stearyl stearate, hexyl laurate, decyl oleate, hexyldecyl dimethyloctanoate, octyldodecyl ricinoleate, C10-30 fatty acids (cholesteryl / lanosteryl), ethylene glycol di-2-ethylhexanoate, pentaerythritol fatty acid ester, dipentaerythritol fatty acid ester, hydrogenated castor oil isostearate, lauryl lactate, cetyl lactate, myristyl lactate, octyldodecyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cetyl caprate, glyceryl tricaprylate, diisostearyl malate, dioctyl succinate, isodecyl pivalate, isostearyl pivalate, and lanolin derivatives. These may be used alone or in combination of two or more.

[0029] Among these, from the viewpoint of achieving excellent formulation stability, branched esters (A-2-1) are preferred (esters having a branched structure in the hydrocarbon chain are preferred), and among these, glyceryl tri-2-ethylhexanoate and cetyl 2-ethylhexanoate are preferred, with glyceryl tri-2-ethylhexanoate being particularly preferred. These branched esters (A-2-1) can significantly improve the ease of rinsing after use of a hair cosmetic composition that forms a W / O emulsion upon application. Furthermore, when the hair cosmetic composition (a hair cosmetic composition that forms a W / O emulsion upon application) is a multi-component composition obtained by mixing two or more individual components that form a W / O emulsion, the mixability can be improved. That is, the individual components that form a W / O emulsion can more easily form a dispersed mixed state of both components.

[0030] When the liquid oily component (A) contains an ester (A-2) (particularly a branched ester (A-2-1)), the content of the ester is not limited, but is preferably 0.5% by mass or more, more preferably 1% by mass or more, more preferably 1.5% by mass or more, more preferably 2% by mass or more, and even more preferably 2.5% by mass or more, based on 100% by mass of the total hair cosmetic composition at the time of use. On the other hand, it is preferably 30% by mass or less, more preferably 20% by mass or less, more preferably 15% by mass or less, more preferably 12% by mass or less, and even more preferably 8% by mass or less. The above values ​​can be combined. That is, it is preferably 0.5 to 30% by mass, more preferably 1 to 20% by mass, more preferably 1.5 to 15% by mass, more preferably 2 to 12% by mass, and even more preferably 2.5 to 8% by mass.

[0031] Furthermore, as mentioned above, when the hair cosmetic composition is a multiple-component type, the content of the ester in the agent (e.g., the first or second agent of the multiple-component hair cosmetic composition) containing the ester (A-2) (particularly the branched ester (A-2-1)) as the liquid oily component (A) is not limited, but is preferably 0.5% by mass or more, more preferably 1% by mass or more, more preferably 1.5% by mass or more, even more preferably 2% by mass or more, and even more preferably 2.5% by mass or more, based on 100% by mass of the entire agent containing the liquid oily component (A). On the other hand, it is preferably 30% by mass or less, more preferably 20% by mass or less, even more preferably 15% by mass or less, even more preferably 12% by mass or less, and even more preferably 8% by mass or less. The above values ​​can be combined in any combination. That is, it is preferably 0.5 to 30 mass %, more preferably 1 to 20 mass %, more preferably 1.5 to 15 mass %, more preferably 2 to 12 mass %, and even more preferably 2.5 to 8 mass %.

[0032] (1-3) Silicone Among the liquid oily components (A) described above, examples of silicones (liquid silicones) include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, highly polymerized silicones having an average degree of polymerization of 650 to 10,000, amino-modified silicones (aminoethylaminopropylmethylsiloxane-dimethylsiloxane copolymer (aminoethylaminopropyldimethicone)), polyether-modified silicones, betaine-modified silicones, alkyl-modified silicones, alkoxy-modified silicones, mercapto-modified silicones, carboxy-modified silicones, and fluorine-modified silicones. These may be used alone or in combination of two or more. Among these, methylphenylpolysiloxane and / or dimethicone are preferred, and methylphenylpolysiloxane is particularly preferred, from the viewpoint of improving the feel of hair (ease of running fingers through hair) and the ease of rinsing after application of the hair cosmetic composition.

[0033] When silicone (liquid silicone) is included as the liquid oily component (A), the silicone content is not limited, but is preferably 1% by mass or more, more preferably 2% by mass or more, even more preferably 3% by mass or more, and even more preferably 3.5% by mass or more, based on 100% by mass of the total hair cosmetic composition at the time of use. On the other hand, it is preferably 20% by mass or less, even more preferably 10% by mass or less, even more preferably 7% by mass or less, and even more preferably 6.5% by mass or less. The above values ​​can be combined. That is, it is preferably 1 to 20% by mass, even more preferably 2 to 10% by mass, even more preferably 3 to 7% by mass, and even more preferably 3.5 to 6.5% by mass.

[0034] Furthermore, as mentioned above, when the hair cosmetic composition is a multi-component type, the silicone content in the agent containing silicone (liquid silicone) as the liquid oily component (A) (e.g., the first or second agent of the multi-component hair cosmetic composition) is not limited, but is preferably 1% by mass or more, more preferably 2% by mass or more, even more preferably 3% by mass or more, and even more preferably 3.5% by mass or more, based on 100% by mass of the entire agent containing the liquid oily component (A). On the other hand, it is preferably 20% by mass or less, even more preferably 10% by mass or less, even more preferably 7% by mass or less, and even more preferably 6.5% by mass or less. The above values ​​can be combined with each other. That is, it is preferably 1 to 20% by mass, even more preferably 2 to 10% by mass, even more preferably 3 to 7% by mass, and even more preferably 3.5 to 6.5% by mass.

[0035] (1-4) Hydrocarbons Among the liquid oily components (A) described above, examples of hydrocarbons (liquid hydrocarbons) include liquid paraffin (mineral oil), liquid isoparaffin, olefin oligomer, polyisobutene, hydrogenated polyisobutene, synthetic squalane, squalene, squalane (hydrogenated squalene), polybutene, etc. These may be used alone or in combination of two or more. Among these, liquid paraffin is preferred.

[0036] When a hydrocarbon (liquid hydrocarbon) is contained as the liquid oily component (A), the content of the hydrocarbon is not limited, but is preferably 0.5% by mass or more, more preferably 1% by mass or more, even more preferably 2% by mass or more, and even more preferably 3% by mass or more, based on 100% by mass of the total hair cosmetic composition at the time of use. On the other hand, it is preferably 30% by mass or less, even more preferably 20% by mass or less, even more preferably 16% by mass or less, and even more preferably 8% by mass or less. The above values ​​can be combined. That is, for example, it is preferably 0.5 to 30% by mass, even more preferably 1 to 20% by mass, even more preferably 2 to 16% by mass, and even more preferably 3 to 8% by mass.

[0037] As mentioned above, when the hair cosmetic composition is a multiple-component type, the content of hydrocarbons (liquid hydrocarbons) in the agent containing the liquid oily component (A) (e.g., the first or second agent of the multiple-component hair cosmetic composition) is not limited. However, when the entire agent containing the liquid oily component (A) is taken as 100% by mass, the content is preferably 0.5% by mass or more, more preferably 1% by mass or more, even more preferably 2% by mass or more, and even more preferably 3% by mass or more. On the other hand, the content is preferably 30% by mass or less, even more preferably 20% by mass or less, even more preferably 16% by mass or less, and even more preferably 8% by mass or less. The above values ​​can be combined. For example, the content is preferably 0.5 to 30% by mass, even more preferably 1 to 20% by mass, even more preferably 2 to 16% by mass, and even more preferably 3 to 8% by mass.

[0038] (1-5) Other liquid oily ingredients Among the liquid oily components (A) described above, examples of oils and fats (liquid oils and fats) include vegetable oils (vegetable oils and fats), animal oils (animal oils and fats), etc. Among these, 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, camellia oil, Argania spinosa kernel oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, cocoa butter, corn oil, peanut oil, rapeseed oil, evening primrose oil, wheat germ oil, Job's tears oil, avocado oil, carrot oil, castor oil, linseed oil, coconut oil, palm oil, etc. On the other hand, examples of animal oils include egg yolk oil, etc. These may be used alone or in combination of two or more.

[0039] Among the liquid oily components (A) described above, examples of higher fatty acids (liquid higher fatty acids) include isostearic acid, oleic acid, linoleic acid, ricinoleic acid, undecylenic acid, etc. These may be used alone or in combination of two or more.

[0040] When the liquid oil component (A) contains the other liquid oil components described above, the content of the other liquid oil components is not limited, but is preferably 0.5% by mass or more, more preferably 1% by mass or more, more preferably 2% by mass or more, and even more preferably 3% by mass or more, based on 100% by mass of the total hair cosmetic composition at the time of use. On the other hand, it is preferably 30% by mass or less, more preferably 20% by mass or less, more preferably 16% by mass or less, and even more preferably 8% by mass or less. The above values ​​can be combined. That is, it is preferably 0.5 to 30% by mass, more preferably 1 to 20% by mass, more preferably 2 to 16% by mass, and even more preferably 3 to 8% by mass.

[0041] Furthermore, as mentioned above, when the hair cosmetic composition is a multiple-component type, the content of the other liquid oily component(s) in the agent containing the liquid oily component(s) described above as the liquid oily component (A) (e.g., the first or second agent of the multiple-component hair cosmetic composition) is not limited, but is preferably 0.5% by mass or more, more preferably 1% by mass or more, even more preferably 2% by mass or more, and even more preferably 3% by mass or more, based on 100% by mass of the entire agent containing the liquid oily component (A). On the other hand, it is preferably 30% by mass or less, even more preferably 20% by mass or less, even more preferably 16% by mass or less, and even more preferably 8% by mass or less. The above values ​​can be combined with each other. That is, it is preferably 0.5 to 30% by mass, even more preferably 1 to 20% by mass, even more preferably 2 to 16% by mass, and even more preferably 3 to 8% by mass.

[0042] The hair cosmetic composition of the present invention may contain a solid oil component in addition to the liquid oil component (A) within the range in which the composition exhibits its effects. Examples of the solid oil component include waxes, higher fatty acids (solid higher fatty acids), higher alcohols (solid higher alcohols), and hydrocarbons (solid hydrocarbons). Among these, examples of waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, spermaceti, rice bran wax, sugarcane wax, palm wax, montan wax, cotton wax, bayberry wax, privet wax, kapok wax, shellac wax, etc. These may be used alone or in combination of two or more. Furthermore, examples of solid higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, hydroxystearic acid, 12-hydroxystearic acid, lanolin fatty acid, etc. These may be used alone or in combination of two or more. Further, examples of solid higher alcohols include cetearyl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, arachyl alcohol, behenyl alcohol, etc. These may be used alone or in combination of two or more. In addition, examples of solid hydrocarbons include Vaseline, solid paraffin (normal paraffin having 20 or more carbon atoms, etc.), etc. These may be used alone or in combination of two or more.

[0043] (2) Polymer The polymer is a high-molecular-weight compound, excluding the aforementioned component (A). The polymer structure is not limited, but is typically an organic compound having a carbon skeleton (i.e., typically, polymer compounds do not contain silicone). The molecular weight is also not limited, but is typically 10,000 or greater. The inclusion of polymer (B) can improve the stability of the emulsion state of the hair cosmetic composition. Furthermore, polymers can be broadly classified into oil-soluble polymers (excluding component (A)) that exhibit oil solubility and water-soluble polymers (excluding component (A)) that exhibit water solubility, but the hair cosmetic composition of the present invention preferably contains at least an oil-soluble polymer, and more preferably contains both an oil-soluble polymer and a water-soluble polymer. The inclusion of an oil-soluble polymer can improve the stability of the W / O type emulsion state.

[0044] When the hair cosmetic composition of the present invention contains polymer (B), the content of polymer (B) is not limited, but is preferably 0.5% by mass or more, more preferably 0.75% by mass or more, even more preferably 1% by mass or more, and even more preferably 1.25% by mass or more, based on 100% by mass of the total hair cosmetic composition at the time of use. On the other hand, it is preferably 5% by mass or less, even more preferably 4% by mass or less, even more preferably 3% by mass or less, and even more preferably 2% by mass or less. The above values ​​can be combined. That is, it is preferably 0.5 to 5% by mass, even more preferably 0.75 to 4% by mass, even more preferably 1 to 3% by mass, and even more preferably 1.25 to 2% by mass.

[0045] As mentioned above, when the hair cosmetic composition is a multiple-component type, the content of polymer (B) in the agent containing polymer (B) (e.g., the first or second agent of a multiple-component hair cosmetic composition) is not limited. However, when the total amount of the agent containing polymer (B) is taken as 100% by mass, the content is preferably 0.5% by mass or more, more preferably 0.75% by mass or more, even more preferably 1% by mass or more, and even more preferably 1.25% by mass or more. On the other hand, the content is preferably 5% by mass or less, even more preferably 4% by mass or less, even more preferably 3% by mass or less, and even more preferably 2% by mass or less. The above values ​​can be combined with each other. That is, 0.5 to 5% by mass is preferred, even more preferably 0.75 to 4% by mass, even more preferably 1 to 3% by mass, and even more preferably 1.25 to 2% by mass.

[0046] (2-1) Oil-soluble polymer Among polymers, oil-soluble polymers are compounds that dissolve in the oil phase of a W / O type composition (i.e., dissolve in the main component of the oil phase). Examples of oil-soluble polymers include polysaccharide polymers (oil-soluble polysaccharide polymers) and acrylic polymers (oil-soluble acrylic polymers). These may be used alone or in combination of two or more. Furthermore, these are preferably nonionic polymers (nonionic oil-soluble polymers).

[0047] Of the above, examples of polysaccharide polymers (oil-soluble polysaccharide polymers) include cellulose polymers (oil-soluble cellulose polymers) and non-cellulose polymers (oil-soluble non-cellulose polysaccharide polymers). These may be used alone or in combination of two or more. Of these, examples of cellulose polymers include cellulose ethers (oil-soluble cellulose ethers) and cellulose esters (oil-soluble cellulose esters). These may be used alone or in combination of two or more. Furthermore, as mentioned above, these are preferably nonionic. That is, for example, nonionic cellulose ethers are preferred. Examples of the cellulose ether include methyl cellulose, ethyl cellulose, and ethyl methyl cellulose. These may be used alone or in combination of two or more. Among these, ethyl cellulose is preferred from the viewpoint of good solubility in the oil phase.

[0048] Examples of non-cellulose polymers (oil-soluble non-cellulose polysaccharide compounds, oil-soluble polymers having polysaccharides other than cellulose in their structure) 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.

[0049] When the hair cosmetic composition of the present invention contains an oil-soluble polymer, the content of the oil-soluble polymer is not limited, but is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.3% by mass or more, and even more preferably 0.4% by mass or more, based on 100% by mass of the entire hair cosmetic composition at the time of use. On the other hand, the content is preferably 3% by mass or less, even more preferably 2.75% by mass or less, even more preferably 2.25% by mass or less, and even more preferably 2% by mass or less. The above values ​​can be combined. That is, the content is preferably 0.1 to 3% by mass, even more preferably 0.2 to 2.75% by mass, even more preferably 0.3 to 2.25% by mass, and even more preferably 0.4 to 2% by mass.

[0050] As mentioned above, when the hair cosmetic composition is a multiple-component type, the content of the oil-soluble polymer in the agent containing the oil-soluble polymer as polymer (B) (e.g., the first or second agent of the multiple-component hair cosmetic composition) is not limited. However, when the total amount of the agent containing the oil-soluble polymer is taken as 100% by mass, the content is preferably 0.1% by mass or more, more preferably 0.2% by mass or more, even more preferably 0.3% by mass or more, and even more preferably 0.4% by mass or more. On the other hand, the content is preferably 3% by mass or less, even more preferably 2.75% by mass or less, even more preferably 2.25% by mass or less, and even more preferably 2% by mass or less. The above values ​​can be combined. That is, 0.1 to 3% by mass is preferred, even more preferably 0.2 to 2.75% by mass, even more preferably 0.3 to 2.25% by mass, and even more preferably 0.4 to 2% by mass.

[0051] (2-2) Water-soluble polymer Among the polymers, water-soluble polymers are those that dissolve in the aqueous phase of a W / O composition (i.e., dissolve in water). Examples of water-soluble polymers include polysaccharide polymers (water-soluble polysaccharide polymers), vinyl polymers (water-soluble vinyl polymers), acrylic polymers (water-soluble acrylic polymers), and other water-soluble polymers. These may be used alone or in combination of two or more. Furthermore, these water-soluble polymers preferably include at least an ionic water-soluble polymer, and particularly preferably include a cationic water-soluble polymer.

[0052] Of the above, examples of polysaccharide polymers (water-soluble polysaccharide polymers) include cellulose polymers (water-soluble cellulose polymers) and non-cellulose polymers (water-soluble non-cellulose polysaccharide polymers). These may be used alone or in combination of two or more. Of these, examples of cellulose polymers include cellulose ethers (water-soluble cellulose ethers) and cellulose esters (water-soluble cellulose esters). These may be used alone or in combination of two or more. Among these, examples of cellulose ethers include carboxymethyl cellulose, carboxyethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropylmethyl cellulose, etc. These may be used alone or in combination of two or more.

[0053] The cellulose ether is preferably an ionic cellulose ether. The ionic cellulose ether may be any of cationic cellulose ethers, anionic cellulose ethers, and amphoteric cellulose ethers, and these may be used alone or in combination of two or more. However, in the hair cosmetic composition of the present invention, cationic cellulose ethers (cationic water-soluble cellulose ethers) are particularly preferred from the viewpoint of improving the feel (feel of hair when applying (rinsing) and after applying (drying) the hair cosmetic composition). Examples of cationic cellulose ethers include O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride (polyquaternium-10) and hydroxyethyl cellulose dimethyldiallylammonium chloride. Among these, O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride is preferred.

[0054] On the other hand, examples of non-cellulose polymers (water-soluble non-cellulose polysaccharide polymers, water-soluble polymers having polysaccharides other than cellulose in their structure) 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, cationized guar gum, starch phosphate ester, dextran hydroxypropyltrimonium chloride, etc. These may be used alone or in combination of two or more.

[0055] Examples of vinyl polymers (water-soluble vinyl polymers) include polyvinyl alcohol (PVA), polyvinyl butyral, polyvinyl methyl ether, carboxyvinyl polymers, etc. These may be used alone or in combination of two or more. Examples of acrylic polymers (water-soluble acrylic polymers) include sodium polyacrylate, polyacrylamide, acrylic acid / alkyl acrylate copolymers, copolymers of esters of methacrylic acid and POE alkyl ether and at least one monomer selected from acrylic acid, methacrylic acid, and their alkyl esters, polyquaternium-11 (vinylpyrrolidone-N,N-dimethylaminoethyl methacrylic acid copolymer sulfate solution), etc. These may be used alone or in combination of two or more. Other water-soluble polymers include ethylene oxide-propylene oxide block copolymers, polyethylene oxide, polyethylene glycol, highly polymerized polyethylene glycol, polydimethyldimethylenepiperidinium chloride (polyquaternium-6), half esters of itaconic acid and POE alkyl ether, propylene glycol alginate, alginates, etc. These may be used alone or in combination of two or more.

[0056] When the hair cosmetic composition of the present invention contains a water-soluble polymer, the content of the water-soluble polymer is not limited, but is preferably 0.2% by mass or more, more preferably 0.25% by mass or more, even more preferably 0.3% by mass or more, and even more preferably 0.35% by mass or more, based on 100% by mass of the total hair cosmetic composition at the time of use. On the other hand, the content is preferably 3.5% by mass or less, even more preferably 3% by mass or less, even more preferably 2.5% by mass or less, and even more preferably 2% by mass or less. The above values ​​can be combined. That is, the content is preferably 0.2 to 3.5% by mass, even more preferably 0.25 to 3% by mass, even more preferably 0.3 to 2.5% by mass, and even more preferably 0.35 to 2% by mass, based on 100% by mass of the total hair cosmetic composition at the time of use.

[0057] As mentioned above, when the hair cosmetic composition is a multiple-component type, the content of the water-soluble polymer in the agent containing the water-soluble polymer as polymer (B) (e.g., the first or second agent of the multiple-component hair cosmetic composition) is not limited. However, when the total amount of the agent containing the water-soluble polymer is taken as 100% by mass, the content is preferably 0.2% by mass or more, more preferably 0.25% by mass or more, even more preferably 0.3% by mass or more, and even more preferably 0.35% by mass or more. On the other hand, the content is preferably 3.5% by mass or less, even more preferably 3% by mass or less, even more preferably 2.5% by mass or less, and even more preferably 2% by mass or less. The above values ​​can be combined. That is, the content is preferably 0.2 to 3.5% by mass, even more preferably 0.25 to 3% by mass, even more preferably 0.3 to 2.5% by mass, and even more preferably 0.35 to 2% by mass.

[0058] When the hair cosmetic composition of the present invention contains a polymer and further contains both an oil-soluble polymer and a water-soluble polymer, the ratio of the content of each polymer in the total hair cosmetic composition (100% by mass) (oil-soluble polymer) / (water-soluble polymer) is not limited, but from the viewpoint of formulation stability, it is preferably 0.02 or more, more preferably 0.06 or more, even more preferably 0.08 or more, and even more preferably 0.1 or more. On the other hand, from the viewpoint of formulation stability, it is preferably 0.8 or less, even more preferably 0.75 or less, and even more preferably 0.7 or less. The above values ​​can be combined with each other. That is, it is preferably 0.02 to 0.8, even more preferably 0.06 to 0.75, even more preferably 0.08 to 0.7, and even more preferably 0.1 to 0.7.

[0059] Content C of liquid oily component (A) in the hair cosmetic composition of the present invention A (g) and the content C of polymer (B) in the hair cosmetic composition of the present invention. B (g) ratio (C A / C B) is not limited, but from the viewpoint of rinsing performance (ease of running fingers through the skin when rinsing), formulation stability, and obtaining a creamy texture that exhibits good adhesion, it is preferably 2 or more, more preferably 5 or more, even more preferably 8 or more, and even more preferably 10 or more. On the other hand, from the viewpoint of mixability, ease of rinsing, and furthermore, making the creamy texture softer and easier to apply, it is preferably 30 or less, even more preferably 26 or less, even more preferably 22 or less, and even more preferably 18 or less. The above-mentioned values ​​can be combined with each other. That is, 2 to 30 is preferable, 5 to 26 is more preferable, 8 to 22 is more preferable, and 10 to 18 is more preferable.

[0060] (3) Other ingredients The hair cosmetic composition of the present invention may contain other components in addition to the (A) liquid oily component and the (B) polymer. These other components include surfactants, oxidizing agents, alkali agents, dyes, stabilizers, pH adjusters, preservatives, antioxidants, etc. These may be used alone or in combination of two or more.

[0061] (3-1) Surfactants Examples of surfactants include nonionic surfactants, cationic surfactants, anionic surfactants, and amphoteric surfactants. These surfactants may be used alone or in combination of two or more. The surfactant is added for purposes such as improving rinse-off performance and achieving good mixability.

[0062] Examples of nonionic surfactants include ether-type nonionic surfactants, ester-type nonionic surfactants, and alkyl glucosides. These surfactants may be used alone or in combination of two or more. Among these, ether-type nonionic surfactants are preferred from the viewpoints of formulation stability and the mixability of the components when the hair cosmetic composition is a multi-component type.

[0063] Examples of the ether-type nonionic surfactant include polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, polyoxyalkylene alkylphenyl ethers, polyoxyalkylene phenyl ethers, etc. These may be used alone or in combination of two or more.

[0064] 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. Examples of the alkyl group in the ether-type nonionic surfactant include cetyl, stearyl, behenyl, lauryl, myristyl, octyldodecyl, hexyldecyl, isostearyl, and decyltetradecyl groups. 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. 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. The polyoxyalkylene group can be appropriately combined with the alkyl group, alkenyl group, alkylphenyl group, etc.

[0065] 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, and POE·POP decyltetradecyl ether. These may be used alone or in combination of two or more. From the viewpoint of compatibility, POE alkylene ether is preferred, and POE stearyl ether, POE cetyl ether, and POE oleyl ether are more preferred.

[0066] 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.

[0067] 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 POE isostearyl ether include POE(5) isostearyl ether, etc. These may be used alone or in combination of two or more. 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.

[0068] 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 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.

[0069] Among the above, examples of polyoxyalkylene alkylphenyl ethers include POE nonylphenyl ether, POE octylphenyl ether, etc. These may be used alone or in combination of two or more.

[0070] On the other hand, nonionic surfactants include 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 monofatty acid esters such as POE glycerol monostearate and POE glycerol monomyristate; and POE sorbitol fatty acid esters such as POE sorbitan tetraoleate, POE sorbitan hexastearate, and POE sorbit monolaurate. The number of moles of POE added in POE sorbitan fatty acid esters and monoglyceryl monofatty acid esters is, for example, 5 or more. The number of moles of POE added in POE sorbitol fatty acid esters is, for example, 6 or more. Other ester-type nonionic surfactants include sorbitan beeswax such as POE(6)POE sorbitan 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, POE reduced lanolin, etc. These may be used alone or in combination of two or more.

[0071] Examples of 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; amine salts such as alkylamine salts, fatty acid amide amine salts, ester-containing tertiary amine salts, and arcobel tertiary amine salts; cyclic quaternary ammonium salts such as alkylpyridinium salts and alkylisoquinolium salts; and benzethonium chloride. These surfactants may be used alone or in combination of two or more. The use of cationic surfactants in combination can further improve the miscibility.

[0072] Among these, alkyl quaternary ammonium salts are preferred, and more preferred are monoalkyl quaternary ammonium salts and / or dialkyl quaternary ammonium salts, and more preferred are monoalkyl quaternary ammonium salts.

[0073] 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, distearoyltrimethylammonium chloride, Examples 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 ethyl sulfate aminopropyl ethyl dimethyl ammonium, behenyl trimethyl ammonium methyl sulfate, hydroxyethyl cellulose dimethyl diallyl ammonium chloride, etc. These may be used alone or in combination of two or more.

[0074] 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, mono- or diester phosphate surfactants, and sulfosuccinate esters. These surfactants may be used alone or in combination of two or more. Examples of counter ions to 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.

[0075] That is, for example, disodium lauryl sulfosuccinate, sodium lauryl sulfate, sodium myristyl sulfate, potassium lauryl sulfate, ammonium lauryl sulfate, triethanolamine lauryl sulfate, 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 stearoylmethyl taurate, triethanolamine dodecylbenzenesulfonate, sodium tetradecenesulfonate, sodium lauryl phosphate, POE lauryl ether phosphate and its salts, N-lauroyl glutamates (such as sodium lauroyl glutamates), N-lauroylmethyl-β-alanine salts, N-acylglycine salts, N-acyl glutamates, higher fatty acids such as lauric acid and myristic acid, and salts of these higher fatty acids. These may be used alone or in combination of two or more.

[0076] Examples of amphoteric surfactants include amino acid-type amphoteric surfactants and betaine-type amphoteric surfactants. Among these, examples of 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'-caprylic acid and glycine-type amphoteric surfactants such as sodium laurylaminopropionate, sodium laurylaminodipropionate, and triethanolamine laurylaminopropionate. These may be used alone or in combination of two or more.

[0077] Examples of betaine-type amphoteric surfactants include aminoacetic acid betaine-type amphoteric surfactants such as coconut oil alkyl betaine, lauryl dimethyl aminoacetic acid betaine, myristyl dimethyl aminoacetic acid betaine, stearyl dimethyl aminoacetic 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.

[0078] When the hair cosmetic composition of the present invention contains a surfactant, the content of the surfactant is not limited, but from the viewpoint of formulation stability, when the total weight of the hair cosmetic composition at the time of use is taken as 100% by weight, the content is preferably 20% by weight or less, more preferably 15% by weight or less, and even more preferably 10% by weight or less.

[0079] (3-2) Oxidizing agent The oxidizing agent may be any type that can exert an oxidizing effect, but examples thereof include peroxide-based oxidizing agents. Peroxide-based oxidizing agents are compounds with a structure represented by "-OO-". This structure is similar to the peroxide ion (O2 2- In the case of organic compounds, they are contained as a peroxide structure (-OO-) or a percarboxylic acid structure (-CO-OO-). These may be used alone or in combination of two or more. Among the above, inorganic compounds are preferred, and furthermore, hydrogen peroxide is more preferred among the inorganic compounds described below.

[0080] Examples of inorganic compounds among the peroxide-based oxidizing agents include peroxides such as hydrogen peroxide (which may be used as inclusion compounds 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). These may be used alone or in combination of two or more.

[0081] Examples of organic compounds among 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. Non-peroxide oxidizing agents (i.e., compounds not containing the 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.

[0082] When the hair cosmetic composition of the present invention contains an oxidizing agent, the content of the oxidizing agent is not limited, but is preferably 0.05% by mass or more, more preferably 1% by mass or more, and even more preferably 2% by mass or more, based on 100% by mass of the entire hair cosmetic composition at the time of use. On the other hand, it is preferably 15% by mass or less, more preferably 10% by mass or less, and even more preferably 7.5% by mass or less. The above values ​​can be combined. That is, it is preferably 0.05 to 15% by mass, more preferably 1 to 10% by mass, and even more preferably 2 to 7.5% by mass.

[0083] (3-3) Alkaline agent The alkaline agent includes organic bases, inorganic bases and salts thereof. Among these, examples of organic bases include organic amines, basic amino acids (such as arginine, lysine, and their salts), guanidine, and its salts (such as guanidine carbonate). Specific examples include alkanolamines such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, aminomethylpropanol (such as 2-amino-2-methyl-1-propanol), and aminomethylpropanediol (such as 2-amino-2-methyl-1,3-propanediol), as well as alkylamines such as monoethylamine and isopropylamine. These organic bases may be used alone or in combination of two or more.

[0084] Examples of inorganic bases include hydroxides, chlorides, silicates, carbonates, bicarbonates, metasilicates, phosphates, sulfates, ammonia, etc. Specific examples include alkali metal hydroxides such as sodium hydroxide, alkali metal carbonates such as sodium carbonate, alkali metal bicarbonates such as sodium bicarbonate, 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 bicarbonate. These inorganic bases may be used alone or in combination of two or more.

[0085] The content of the alkaline agent is not limited, and it is sufficient that it is blended so that the pH (25°C) of the hair cosmetic composition (or the pH after mixing in the case of a multi-component type) exceeds 7, and it is preferably blended so that the pH is 8 or higher, and even more preferably 9 or higher. On the other hand, it is preferably blended so that the pH is 13.5 or lower, pH 13 or lower, or pH 12 or lower. The above values ​​can be combined with each other. That is, it is preferable that the pH is greater than 7 and 13.5 or lower, 8 to 13, or 9 to 12.

[0086] When the hair cosmetic composition of the present invention contains an alkaline agent, the content of the alkaline agent is not limited, but is preferably 0.05% by mass or more, more preferably 1% by mass or more, and even more preferably 2% by mass or more, based on 100% by mass of the total hair cosmetic composition at the time of use. On the other hand, it is preferably 15% by mass or less, more preferably 10% by mass or less, and even more preferably 7.5% by mass or less. The above values ​​can be combined. That is, it is preferably 0.05 to 15% by mass, more preferably 1 to 10% by mass, and even more preferably 2 to 7.5% by mass.

[0087] (3-4) Dye The dyes include oxidation dyes and direct dyes, which 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, selected from a dye intermediate and a coupler. The dye intermediate is a component that develops color through oxidative polymerization in the presence of an oxidizing agent. On the other hand, the coupler is a component that develops color through 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.

[0088] Examples of dye intermediates include p-phenylenediamine, toluene-2,5-diamine (p-toluylenediamine), 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, dye intermediates include salts of the above-mentioned various compounds. Examples of salts include acid addition salts. Examples of acid addition salts include inorganic acid addition salts such as hydrochlorides and sulfates, and organic acid addition salts such as acetates. These dye intermediates and their salts may be used alone or in combination.

[0089] Examples of couplers include 2,4-diaminophenoxyethanol, α-naphthol, 2,6-diaminopyridine, 5-amino-o-cresol, 5-(2-hydroxyethylamino)-2-methylphenol, resorcinol, catechol, pyrogallol, phloroglucinol, 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, couplers include salts of the above-mentioned compounds. Examples of salts include acid addition salts. Examples of acid addition salts include inorganic acid addition salts such as hydrochlorides and sulfates, and organic acid addition salts such as acetates. These couplers and their salts may be used alone or in combination.

[0090] Of the above, o-aminophenol, p-aminophenol, and p-methylaminophenol can be used both as dye intermediates and as couplers, but when these compounds are used as dye intermediates, compounds other than these compounds exemplified above as couplers can be used in combination as couplers.Similarly, when these compounds are used as couplers, compounds other than these compounds exemplified above as dye intermediates can be used in combination as dye intermediates.

[0091] Of the above, examples of direct dyes include ionic direct dyes and nonionic direct dyes. These may be used alone or in combination of two or more. Of these, examples of ionic direct dyes include acid dyes and basic dyes. These may be used alone or in combination of two or more. Furthermore, examples of nonionic direct dyes include HC dyes and disperse dyes. These may be used alone or in combination of two or more.

[0092] 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.

[0093] Examples of basic dyes include basic red dyes, basic orange dyes, basic yellow dyes, basic green dyes, basic blue dyes, basic purple dyes, basic brown dyes, etc. These may be used alone or in combination of two or more. Furthermore, among the above, examples of basic red dyes 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 basic orange dyes include Basic Orange 1, Basic Orange 2, and Basic Orange 31. Examples of basic yellow dyes include Basic Yellow 11, Basic Yellow 28, Basic Yellow 40, Basic Yellow 57, and Basic Yellow 87. Examples of basic green dyes include Basic Green 1 and Basic Green 4. Examples of basic blue dyes 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.

[0094] Examples of HC dyes include HC red dyes, HC orange dyes, HC yellow dyes, HC blue dyes, HC purple dyes, etc. These may be used alone or in combination of two or more. Furthermore, among the above, examples of 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 HC orange dyes include HC orange 1, HC orange 2, HC orange 3, HC orange 6, and HC orange 7. Examples of 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 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 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.

[0095] 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.

[0096] 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), porphyrin dyes, diketone dyes, betacyanin dyes, and azophyllon dyes. Specific examples of natural dyes include 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 sweet potato pigment, safflower yellow pigment, safflower red pigment, sorghum pigment, onion pigment, cacao pigment, sandalwood pigment, spirulina blue pigment, fluorophyll, bee red, monascus pigment, indigo, gardenia pigment, turmeric pigment, annatto pigment, sodium copper chlorophyllin, paprika pigment, lac pigment, henna, rutin, safflower red, etc. These may be used alone or in combination of two or more.

[0097] When the hair cosmetic composition of the present invention contains a dye, the dye content is not limited, but is preferably 0.001% by mass or more, more preferably 0.1% by mass or more, and even more preferably 0.5% by mass or more, based on 100% by mass of the total hair cosmetic composition at the time of use. On the other hand, it is preferably 15% by mass or less, more preferably 10% by mass or less, and even more preferably 6% by mass or less. The above values ​​can be combined. That is, it is preferably 0.001 to 15% by mass, more preferably 0.1 to 10% by mass, and even more preferably 0.5 to 6% by mass.

[0098] (3-5) Stabilizers Examples of stabilizers include phenoxyethanol (ethylene glycol phenyl ether), salicylic acid, salicylic acid salts, hydroxyethanediphosphonic acid, hydroxyethanediphosphonic acid salts, stannic acid, and stannic acid salts. Among these, examples of cations constituting the salts include alkali metal ions and ammonium ions. These may be used alone or in combination of two or more. Among these, phenoxyethanol and / or salicylic acid are preferred from the viewpoint of minimizing their influence on formulation stability.

[0099] (3-6) pH adjuster The pH adjuster may be an acid and / or a base. The acid includes inorganic acids and salts thereof, and organic acids and salts thereof. Examples of inorganic acids include phosphoric acid, hydrochloric acid, sulfuric acid, and boric acid. Examples of salts thereof include alkali metal salts and ammonium salts. These may be used alone or in combination of two or more. Examples of organic acids include tartaric acid, citric acid, lactic acid, malic acid, succinic acid, fumaric acid, maleic acid, pyrophosphoric acid, gluconic acid, levulinic acid, glycolic acid, glucuronic acid, benzoic acid, and pyrrolidonecarboxylic acid (PCA). Examples of their salts include alkali metal salts and ammonium salts. These may be used alone or in combination of two or more.

[0100] The base includes organic bases, inorganic bases and salts thereof. Examples of organic bases include organic amines, basic amino acids and salts thereof, guanidine and salts thereof, etc. These may be used alone or in combination of two or more. Examples of inorganic bases include hydroxides, chlorides, silicates, carbonates, hydrogencarbonates, metasilicates, phosphates, sulfates, ammonia, etc. These may be used alone or in combination of two or more.

[0101] (3-7) Preservatives Examples of preservatives include phenoxyethanol, methylparaben, ethylparaben, propylparaben, isopropylparaben, butylparaben, isobutylparaben, sodium benzoate, etc. These may be used alone or in combination of two or more.

[0102] (3-8) Antioxidants Examples of antioxidants include ascorbic acid (L-ascorbic acid), anhydrous sodium sulfite, etc. These may be used alone or in combination of two or more.

[0103] (3-9) Further ingredients The hair cosmetic composition of the present invention may contain other ingredients in addition to the above-mentioned components. These other ingredients may include dispersants, protein derivatives and amino acids, sugars (maltose, glycosyl trehalose, N-acetylglucosamine, etc.), buffers (sodium phosphate, etc.), chelating agents (edetic acid and its salts, diethylenetriaminepentaacetic acid and its salts, hydroxyethanediphosphonic acid and its salts, etc.), plant extracts, herbal extracts, vitamins, colorants, fragrances, ultraviolet absorbers, and at least one ingredient selected from those listed in the "Standards for Quasi-drug Raw Materials" (revised March 2021, Yakuji Nipposha). These ingredients may be used alone or in combination.

[0104] (4) Dosage form The formulation of the hair cosmetic composition of the present invention is not limited, and as described above, it may be a single-component hair cosmetic composition or a multi-component hair cosmetic composition. The multi-component hair cosmetic composition is not limited in its configuration. For example, it may be a multi-component hair cosmetic composition containing a first agent (A) in a W / O emulsion state containing a liquid oily component and an alkaline agent, and a second agent (A) in a W / O emulsion state containing a liquid oily component and an oxidizing agent. Furthermore, it may be a multi-component hair cosmetic composition containing a first agent (A) in a W / O emulsion state containing a liquid oily component, a dye, and an alkaline agent, and a second agent (A) in a W / O emulsion state containing a liquid oily component and an oxidizing agent. Furthermore, in the above-mentioned embodiment, both the first agent and the second agent may contain a (B) polymer (excluding the aforementioned (A)). The components that can be contained in these dosage forms are as described above, and the content ratios thereof are also as described above.

[0105] (5) Properties and packaging material The properties of the hair cosmetic composition of the present invention (properties at 25°C) are not limited, and may be, for example, a cream, a paste, a liquid, etc. That is, the properties during use (in the case of a multi-component hair cosmetic composition, the properties after mixing of the first and second components) and during storage (in the case of a multi-component hair cosmetic composition, the properties before mixing of the first and second components) are also the same. The viscosity is not specifically limited, but is preferably 1 to 300,000 mPa·s. This allows for preparation of a particularly viscous liquid. That is, it is preferably 10 to 250,000 mPa·s. The lower limit of this viscosity is preferably 500 mPa·s or more, more preferably 1,000 mPa·s or more, and even more preferably 5,000 mPa·s or more. On the other hand, the upper limit of the viscosity is preferably 200,000 mPa·s or less, more preferably 175,000 mPa·s or less, and even more preferably 150,000 mPa·s or less. The above upper and lower limits can be combined. That is, it is preferably 500 to 200,000 mPa·s, more preferably 1,000 to 175,000 mPa·s, and even more preferably 5,000 to 150,000 mPa·s. The viscosity mentioned above is measured at 25°C using a Brookfield viscometer.

[0106] The packaging material for containing the hair cosmetic composition of the present invention is not limited, and may be a tubular packaging material, a pump-type packaging material, a bottle-type packaging material, a double-can packaging material, an applicator, a pouch, etc. Among these, a tubular packaging material is preferred, and from the viewpoint of formulation stability, a tubular packaging material whose inner surface is made of aluminum is more preferred.

[0107] (6) Application of hair cosmetic composition The hair cosmetic composition of the present invention may be applied to hair in any manner. In the case of a single-component hair cosmetic composition, the hair cosmetic composition can be applied to hair using a tool such as a comb, brush, or spatula. In the case of a multi-component hair cosmetic composition, a mixture of the components may be applied to hair, and similarly to the above, tools such as a comb, brush, or spatula can also be used for application.

[0108] When applying the hair cosmetic composition of the present invention to hair, it can be applied to hair using the user's hands. These may be used alone or in combination of two or more. Furthermore, the hair cosmetic composition may be applied to hair that is wet with water or warm water, or may be applied to dry hair.

[0109] The hair to which the hair cosmetic composition is applied includes, for example, hair from various parts of the body, such as scalp hair, beard, eyebrows, and body hair. There are no limitations on the type of natural hair to which the composition can be applied, but the composition is suitable for human hair. When applied to human hair, the composition may be applied to hair of any condition or color. For example, the composition may be applied to black hair, white hair, bleached hair (black hair that has been bleached), dyed hair, and the like. Application to dyed hair includes repairing, changing, or adding color to dyed hair. [Example]

[0110] The present invention will be described in more detail below with reference to examples. However, these examples are merely examples shown for the convenience of explanation, and the present invention is not limited to these examples in any sense.

[0111] [1] Preparation of oxidative hair dyes and hair bleaches Two-component oxidative hair dyes (hair cosmetic compositions) of Examples 1 to 21 and Comparative Example 1 were prepared by mixing the components shown in Tables 1 to 5 in the mass ratios shown in Tables 1 to 5. Similarly, two-component hair bleaches (hair cosmetic compositions) of Example 22 and Comparative Example 2 were prepared by mixing the components shown in Tables 3 to 5 in the mass ratios shown in Tables 3 to 5. In the table, the following symbols represent the following compounds: Polyquaternium-10: O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethylcellulose chloride Polyquaternium-6: Polydimethyldimethylenepyrrolidinium chloride solution (40%) HEDTA 3Na2H2O: Ethylenediamine hydroxyethyl triacetate trisodium dihydrate

[0112] [2] Evaluation of oxidative hair dyes and bleaches <1> Evaluation of emulsion form The emulsion forms of the first and second agents, and the oxidation hair dye and hair bleach obtained by mixing them, were evaluated as W / O or O / W. Specifically, each agent was dropped into purified water and stirred (1 minute of stirring with a stirrer, i.e., mild stirring). If the dropped agent did not disperse in the water and remained in place, the agent was evaluated as having a W / O emulsion. On the other hand, if the dropped agent dispersed in the water, the agent was evaluated as having an O / W emulsion. The results are shown in Tables 1 to 3 and 5.

[0113] <2> Evaluation of over-dyeing inhibition Each of the oxidative hair dyes in Examples 1 to 21 and Comparative Example 1 was applied to a wig (manufactured by Staffs Co., Ltd.) with the lower half of the hair ends previously damaged by permanent wave treatment, using a comb. After 20 minutes at room temperature (25°C), the wig was washed with shampoo and allowed to air dry. The dyed condition (depth and color tone) of the resulting wig after drying was evaluated. Five expert panelists visually compared the damaged area of ​​the wig (lower half of the hair ends) with the undamaged area of ​​the wig (upper half of the hair ends) under a standard light source, and then selected the score that best represented their perception based on the following evaluation criteria (1). The arithmetic mean of the scores selected by the five expert panelists was calculated.

[0114] [Evaluation Criteria (1)] 5: Slightly darker, no change in color tone 4: Slightly darker, similar in color 3: Dark, similar in color 2: Significantly darker, similar in color 1: Significantly darker and different in color tone

[0115] The arithmetic mean values ​​obtained above were compared with the following criteria (2), and the corresponding scores were shown in Tables 1 to 3 and Table 5. Incidentally, samples that received a score of 3 or more were considered to be examples. [Evaluation Criteria (2)] 5: Arithmetic mean value is 4.7 points or more (excellent) 4: Arithmetic mean value is 4.1 points or more and less than 4.7 points (good) 3: Arithmetic mean value is 3.6 points or more and less than 4.1 points (acceptable) 2: Arithmetic mean value is 2.6 points or more and less than 3.6 points (slightly poor) 1: Arithmetic mean value is less than 2.6 points (poor)

[0116] <3> Evaluation of texture Each of the oxidative hair dyes of Examples 1 to 21 and Comparative Example 1, and each of the hair bleaches of Example 22 and Comparative Example 2, was applied to a wig (manufactured by Staffs Co., Ltd.) using a comb. After 20 minutes had passed at room temperature (25°C) following application, the wig was washed with shampoo and allowed to air dry. The feel of the wig when rinsed out and after drying was evaluated. Five expert panelists evaluated the feel of the wig using their fingers, and then selected the score that most closely matched their perception based on the following evaluation criteria (3). The arithmetic mean of the scores selected by the five expert panelists was calculated.

[0117] [Evaluation Criteria (3)] 5: Excellent balance of moisture and firmness, and smooth to the touch 4: The balance between moisturizing and firmness is a little off, but it feels very smooth to the touch. 3: The balance between moisturizing and firmness is a little off, but it feels smooth to the touch. 2: The balance between moisturizing and firmness is uneven, but it feels smooth to the touch. 1: The balance between moisturizing and firmness is unbalanced, making it difficult to run your fingers through.

[0118] The arithmetic mean values ​​obtained above were compared with the following criterion (4), and the corresponding scores were shown in Tables 1 to 3 and Table 5. Incidentally, samples that received a score of 3 or more were considered to be examples. [Evaluation Criteria (4)] 5: Arithmetic mean score is 4.6 points or more 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

[0119] <4> Evaluation of wash-off performance Each of the oxidative hair dyes of Examples 1 to 21 and Comparative Example 1, and each of the hair bleaches of Example 22 and Comparative Example 2, was applied to a wig (manufactured by Staffs Co., Ltd.) using a comb. After 15 minutes had passed since application at room temperature of 25°C, the mixture was rinsed off the wig with 40°C water over 30 seconds. After rinsing, the wigs were visually and tactilely inspected to evaluate the presence and extent of stickiness and stickiness due to residual oxidative hair dye and hair bleach. The evaluation was carried out by five expert panelists, who selected the score that best suited their perception based on the following evaluation criteria (5), and calculated the arithmetic mean of the scores selected by the five expert panelists.

[0120] [Evaluation Criteria (5)] 5: There is no stickiness or stickiness caused by oxidative hair dye or hair bleach, and the oxidative hair dye or hair bleach is completely washed away (Excellent) 4: There is almost no stickiness or stickiness due to the oxidative hair dye or hair bleach, and the oxidative hair dye or hair bleach is substantially washed away (good) 3: There is a slight stickiness or greasiness from the oxidative hair dye or hair bleach, but the oxidative hair dye or hair bleach has mostly been washed away (acceptable) 2: Stickiness or stickiness due to oxidative hair dye or hair bleach is present, and some of the oxidative hair dye or hair bleach remains (slightly poor) 1: There is a significant stickiness or stickiness due to the oxidative hair dye or hair bleach, and a significant amount of the oxidative hair dye or hair bleach remains (poor)

[0121] The arithmetic mean values ​​obtained above were compared with the following criteria (6), and the corresponding scores were shown in Tables 1 to 3 and Table 5. [Evaluation Criteria (6)] 5: Arithmetic mean value is 4.7 points or more (excellent) 4: Arithmetic mean value is 4.1 points or more and less than 4.7 points (good) 3: Arithmetic mean value is 3.6 points or more and less than 4.1 points (acceptable) 2: Arithmetic mean value is 2.6 points or more and less than 3.6 points (slightly poor) 1: Arithmetic mean value is less than 2.6 points (poor)

[0122] <5> Evaluation of mixing performance 20 g of each of the first and second agents from Examples 1 to 22 and Comparative Examples 1 and 2 was weighed into a dish and mixed with a brush for 10 seconds to obtain a mixture. The ease of mixing during this mixing was then evaluated. Evaluations were performed by five expert panelists, who selected the score that most closely matched their perception based on the following evaluation criteria (7), and the arithmetic mean of the scores selected by the five expert panelists was calculated.

[0123] [Evaluation Criteria (7)] 5: No hardness was felt at all and mixing was possible with very little force 4: Hardness was barely felt and mixing was possible with little force 3: It felt a little hard, but I was able to mix it with little effort. 2: Slightly hard, required some force to mix 1: It was hard and required a lot of force to mix.

[0124] The arithmetic mean values ​​obtained above were compared with the following criteria (8), and the corresponding scores are shown in Tables 1 to 3 and Table 5. Incidentally, samples that received a score of 3 or more were considered to be examples. [Evaluation Criteria (8)] 5: Arithmetic mean score is 4.6 points or more 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

[0125] [Table 1]

[0126] [Table 2]

[0127] [Table 3]

[0128] [Table 4]

[0129] [Table 5]

[0130] [3] Effects of the embodiment A comparison of each of the oxidative hair dyes of Examples 1 to 21 and Comparative Example 1 shows that Comparative Example 1, which is in an O / W emulsion state when used, received a rating of "2" for inhibition of over-dyeing, whereas Examples 1 to 21, which are in a W / O emulsion state when used, received a rating of "4" or "5" for inhibition of over-dyeing, demonstrating significantly superior results compared to Comparative Example 1. Similarly, a comparison of each of the oxidative hair dyes of Examples 1 to 22 and Comparative Example 1 shows that Comparative Example 1, which is in an O / W emulsion state when used, received a rating of "2" for feel, whereas Examples 1 to 21, which are in a W / O emulsion state when used, received a rating of "3," "4," or "5" for feel, demonstrating superior results compared to Comparative Example 1. Furthermore, comparing the hair bleaches of Example 22 and Comparative Example 2, the feel of Comparative Example 2, which is in an O / W emulsion state upon use, was rated as "2," while the feel of Example 22, which is in a W / O emulsion state upon use, was rated as "5," demonstrating significantly better results than Comparative Example 2.

[0131] 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 which is an oxidative hair dye or hair bleach and which is in a water-in-oil emulsion state when used.

2. The hair cosmetic composition according to claim 1, further comprising (A) a liquid oily component.

3. 3. The hair cosmetic composition according to claim 2, wherein (A) comprises at least one of a higher alcohol having an unsaturated bond, a higher alcohol having a branched structure, and an ester.

4. The hair cosmetic composition according to claim 2 or 3, wherein the content of (A) is 18 to 35% by mass.

5. The hair cosmetic composition according to claim 1 or 2, further comprising (B) a polymer (excluding (A)).

6. The hair cosmetic composition according to claim 5, wherein the polymer (B) is an oil-soluble polymer.

7. 2. The hair cosmetic composition according to claim 1, which is a multi-component oxidative hair dye or hair bleach comprising the following first and second components: The first agent is a water-in-oil type emulsion agent containing (A) a liquid oily component and an alkaline agent. The second agent is a water-in-oil type emulsion agent containing (A) a liquid oily component and an oxidizing agent.

8. The hair cosmetic composition according to claim 7 , wherein the first agent and the second agent each contain a polymer (B) (excluding the polymer (A)).

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