Hair cosmetic and hair cosmetic kit

Abstract

To provide a hair cosmetic and a hair cosmetic kit which improve rinsing performance caused by use of an agent in a water-in-oil type emulsion state.SOLUTION: A first hair cosmetic is a dual-agent type hair cosmetic, where at least one of compositions is in a water-in-oil type emulsion state, at least one of compositions contains nonionic surfactant. A second hair cosmetic is in a water-in-oil type emulsion state, and contains nonionic surfactant. A third hair cosmetic is used for hair applied with a water-in-oil type emulsified composition and / or hair applied with a mixture of a water-in-oil type emulsified composition and an oil-in-water type emulsified composition, and contains nonionic surfactant. A hair cosmetic kit is equipped with the dual-agent type hair cosmetic and the third hair cosmetic, and at least one of the compositions is in a water-in-oil type emulsion state.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a hair cosmetic and a hair cosmetic kit. More specifically, the present invention relates to a hair cosmetic containing a hair cosmetic composition forming a water-in-oil emulsified state, a hair cosmetic forming a water-in-oil emulsified state, a hair cosmetic used on hair to which a composition for hair cosmetics forming a water-in-oil emulsified state has been applied, and / or a mixture of a composition for hair cosmetics forming a water-in-oil emulsified state and a composition for hair cosmetics forming an oil-in-water emulsified state has been applied, and a hair cosmetic kit. [Background technology]

[0002] The following Patent Documents 1 to 3 are known as techniques that utilize an agent that forms a water-in-oil type 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] JP 2019-167337 A Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned Patent Document 1 describes a method for preventing oxidation and deterioration of the base agent due to contact with air (

[0005] ) and the container will discolor, corrode, and deform when it comes into contact with alkaline agents (

[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 fragrant aroma (

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

[0005] The above-mentioned Patent Document 2 discloses a hair treatment emulsion (claim 1) for the purpose of solving problems such as the difficulty in maintaining an appropriate viscosity that does not drip from the hair when a large amount of surfactant is used to improve the stability of a W / O emulsion (

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

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

[0006] The above-mentioned Patent Document 3 discloses a two-component oxidative hair dye or bleach composition (claim 1) that is composed of a first component containing an alkaline agent and a second component containing an oxidizing agent, with the aim of providing a two-component oxidative hair dye or bleach composition that can provide sufficient hair dyeing or bleaching properties and reduce skin irritation (

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

[0007] As described above, the agent that forms a water-in-oil emulsion can enjoy advantages that are difficult to obtain from the agent that forms an oil-in-water emulsion, but when the agent that forms a water-in-oil emulsion is actually used, its wash-off performance becomes a problem. That is, when a multi-component hair cosmetic containing a composition for a hair cosmetic that forms a water-in-oil emulsion (which may be a water-in-oil or oil-in-water type when used) or a hair cosmetic that forms a water-in-oil emulsion is applied to hair and then washed off in a general manner, a sticky or tacky feeling derived from the agent may remain. However, the above Patent Documents 1 to 3 do not describe or suggest that wash-off is a problem or how to deal with it.

[0008] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a hair cosmetic composition and a hair cosmetic kit that improve the rinsing performance caused by the use of an agent that forms a water-in-oil type emulsion state. [Means for solving the problem]

[0009] The present invention includes the following: [1] A multi-component hair cosmetic composition comprising a plurality of separate hair cosmetic compositions, A hair cosmetic composition, characterized in that at least one of the hair cosmetic compositions is in a water-in-oil type emulsion state and contains (A) a nonionic surfactant. [2] A hair cosmetic composition that is in a water-in-oil emulsion state, (A) A hair cosmetic composition comprising a nonionic surfactant. [3] A hair cosmetic to be used on hair to which a hair cosmetic composition forming a water-in-oil emulsion has been applied, and / or on hair to which a mixture of a hair cosmetic composition forming a water-in-oil emulsion and a hair cosmetic composition forming an oil-in-water emulsion has been applied, comprising: (A) A hair cosmetic composition comprising a nonionic surfactant. [4] The hair cosmetic composition according to any one of [1] to [3] above, wherein the (A) nonionic surfactant is a nonionic surfactant other than polyoxyethylene alkyl ether. [5] The hair cosmetic composition according to the above [1] or [2], wherein the content of the nonionic surfactant (A) during use is 0.025 to 5 mass %. [6] The hair cosmetic composition according to the above item [3], which is a shampoo, rinse, treatment, conditioner or cleansing agent. [7] The hair cosmetic according to the above item [3], wherein the content of the nonionic surfactant is 0.1 to 10 mass % when the total mass of the hair cosmetic is 100 mass %. [8] The hair cosmetic composition according to the above item [1], wherein at least one of the hair cosmetic compositions contains (B) an ester oil. [9] A hair cosmetic composition according to [1] or [2] above, which is applied using a comb.

[10] A multi-component hair cosmetic composition composed of a plurality of separate hair cosmetic compositions; The hair cosmetic composition according to the above [3], A hair cosmetic kit, characterized in that at least one of the hair cosmetic compositions is in a water-in-oil type emulsion state. Effect of the Invention

[0010] According to the hair cosmetic composition of the present invention, it is possible to improve the rinsing performance resulting from the use of an agent that forms a water-in-oil type emulsion. According to the hair cosmetic kit of the present invention, it is possible to improve the rinsing performance caused by the use of an agent that forms a water-in-oil type emulsion state. [Brief description of the drawings]

[0011] [Figure 1] FIG. 2 is an explanatory diagram showing an example of a comb. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] The present invention will be described in detail below. Unless otherwise specified, "%" means "% by mass", "parts" means "parts by mass", and "X to Y" means "X or more and Y or less". In addition, for some compound names, names that conform to the Japan Cosmetic Industry Association's Ingredient Labeling Name List or INCI (International Nomenclature of Cosmetic Ingredients) names will be used. Furthermore, in the names of some compounds, polyoxyalkylene chains may be abbreviated as "POE" for polyoxyethylene chains and "POP" for polyoxypropylene chains. The numbers in parentheses following these abbreviations indicate the number of moles added. Furthermore, (meth)acrylic acid refers to acrylic acid or methacrylic acid.

[0013] [1] Hair cosmetic composition (first aspect of the hair cosmetic composition) The hair cosmetic composition of the first embodiment is a multi-component type hair cosmetic composition composed of a plurality of separate hair cosmetic compositions, At least one of the hair cosmetic compositions is characterized in that it is in a water-in-oil type emulsified state and contains (A) a nonionic surfactant.

[0014] A multi-component hair cosmetic is composed of a plurality of separate hair cosmetic compositions. A multi-component hair cosmetic is usually produced by mixing a plurality of hair cosmetic compositions to achieve the intended function. For this reason, a multi-component hair cosmetic is usually packaged individually so that each hair cosmetic composition is not mixed before use. Before use, the necessary hair cosmetic compositions are mixed together to obtain a mixture, which is then applied to the hair, or the necessary hair cosmetic compositions are applied to the hair in sequence to form a mixture of the hair cosmetic compositions on the hair, thereby making the hair cosmetic composition more usable.

[0015] In this specification, with regard to the hair cosmetic of the first embodiment, a composition for hair cosmetics that is in a water-in-oil type emulsified state and contains a nonionic surfactant (A) is hereinafter also referred to simply as a "W / O type NIS-containing composition." In addition, a hair cosmetic composition that is in an oil-in-water emulsified state will hereinafter also be referred to simply as an "O / W type composition." In addition, a hair cosmetic composition containing an ester oil will hereinafter be simply referred to as an "ester oil-containing composition." Of the above, the W / O type NIS-containing composition and the ester oil-containing composition may be different hair cosmetic compositions, or the two of the above may be the same hair cosmetic composition. In other words, the two being the same means, for example, a hair cosmetic composition that is a W / O type NIS-containing composition and an ester oil-containing composition.

[0016] (1) Emulsified state Water-in-oil type (hereinafter, simply referred to as "W / O type") 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. In other words, it can be said to be an emulsified state in which an outer phase is formed by an oil-based component and an inner phase is formed by an aqueous component. The W / O type emulsified state may be determined in any manner, 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 type emulsified state.

[0017] In contrast, an oil-in-water type emulsion (hereinafter simply referred to as "O / W type") is an emulsion state in which the aqueous component forms a continuous phase and the oil component is dispersed within the continuous phase. In other words, it can be said to be an emulsion state in which the aqueous component forms an outer phase and the oil component forms an inner phase. Note that an O / W type emulsion state may be determined in any manner, but for example, when an agent is dropped into water and stirred (lightly stirred), if the agent is dispersed in the water, it can be determined that the agent is in an O / W type emulsion state.

[0018] (2) Nonionic surfactants (A) The nonionic surfactant is a nonionic surfactant. When a hair cosmetic composition in a W / O type emulsified state contains a nonionic surfactant, the rinsing performance can be improved compared to when the composition does not contain a nonionic surfactant. In addition, the gloss of the appearance of the W / O type NIS-containing composition itself can be improved.

[0019] The type of nonionic surfactant used is not limited, but examples of the nonionic surfactant include ester-type nonionic surfactants, ether-type nonionic surfactants (including POE alkyl ether as described below), alkyl glucosides, etc. These may be used alone or in combination of two or more. Among these, from the viewpoint of further improving the rinsing performance, nonionic surfactants other than POE alkyl ether are preferred, and ester-type nonionic surfactants are more preferred, and ester-type nonionic surfactants having a fatty acid skeleton (i.e., having a fatty acid residue) are even more preferred.

[0020] Examples of the ester-type nonionic surfactant include ester-type nonionic surfactants having various fatty acid skeletons. Specifically, 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 glycerin monostearate and POE glycerin monomyristate; and POE sorbitol fatty acid esters such as POE sorbit tetraoleate, POE sorbit hexastearate, and POE sorbit monolaurate. That is, examples of the ester-type nonionic surfactants include ester-type nonionic surfactants having fatty acid residues. Among these, the number of moles of POE added in the POE sorbitan fatty acid ester and the monoglyceryl monofatty acid ester is, for example, 5 or more. The number of moles of POE added in the POE sorbitol fatty acid ester is, for example, 6 or more. These may be used alone or in combination of two or more.

[0021] Other examples of ester-type nonionic surfactants include sorbit beeswax such as POE(6)POE sorbit beeswax, polyethylene glycol monooleate, polyethylene glycol monostearate, polyethylene glycol monolaurate, lipophilic glycerin monooleate, lipophilic glycerin monostearate, self-emulsifying glycerin monostearate, sorbitan monooleate, sorbitan sesquioleate, sorbitan trioleate, sorbitan monostearate, sorbitan monopalmitate, sorbitan monolaurate, sucrose fatty acid esters, decaglyceryl monolaurate, decaglyceryl monostearate, decaglyceryl monooleate, decaglyceryl monomyristate, and POE reduced lanolin. These may be used alone or in combination of two or more.

[0022] Among the above, POE sorbitan fatty acid esters are preferred from the viewpoint of being less likely to cause emulsification destruction and improving rinsing performance, and POE sorbitan monooleate is further preferred from the viewpoint of being less likely to cause emulsification destruction and improving rinsing performance.

[0023] Examples of ether-type nonionic surfactants include POE cetyl ethers (ceteth), such as POE (5.5) cetyl ether, POE (6) 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, POE (2) cetyl ether, POE (4) cetyl ether, and POE (5) cetyl ether; POE cetyl ether, POE (20) stearyl ether, POE (150) stearyl ether, POE (4) stearyl ether, POE (5) stearyl ether, and POE (20) stearyl ether. POE stearyl ethers (steareth) such as E(2) stearyl ether; POE behenyl ethers (beheneth) such as POE(10) behenyl ether, POE(20) behenyl ether, POE(30) behenyl ether, POE(150) behenyl ether, POE(2) behenyl ether, POE(3) behenyl ether, POE(5) behenyl ether, POE(6) behenyl ether; POE oleyl ethers (oleth) such as POE(7) oleyl ether, POE(10) oleyl ether, POE(15) oleyl ether, POE(20) oleyl ether, POE(50) oleyl ether, POE(2) oleyl ether, POE(3) oleyl ether; POE oleyl ethers (oleth) such as POE(4.POE lauryl ethers (laureths) such as 2) lauryl ether, POE(9) lauryl ether, POE(10) lauryl ether, POE(21) ​​lauryl ether, POE(25) lauryl ether, POE(2) lauryl ether, and POE(3) lauryl ether; POE myristyl ethers such as POE(2) myristyl ether and POE(3) myristyl ether; POE octyldodecyl ethers such as POE(2) octyldodecyl ether and POE(5) octyldodecyl ether; POE(2) hexyldecyl ether, POE(4) hexyldecyl ether, POE hexyldecyl ethers such as POE (5) isostearyl ether; POE nonylphenyl ether; POE octylphenyl ether; POE polyoxypropylene cetyl ethers such as POE (10) POP (4) cetyl ether, POE (20) POP (4) cetyl ether, POE (20) POP (8) cetyl ether, and POE (1) POP (4) cetyl ether; POE polyoxypropylene decyl tetradecyl ethers such as POE (12) POP (6) decyl tetradecyl ether, and the like. That is, various POE alkyl ethers can be mentioned. These can be used alone or in combination of two or more.

[0024] The content ratio of the nonionic surfactant contained in the NIS-containing composition is not limited, but when the entire NIS-containing composition is taken as 100 mass%, the lower limit can be 0.01 mass%, further 0.1 mass%, and further 0.3 mass%. On the other hand, the upper limit can be 10 mass%, further 5 mass%, and further 3 mass%. The above upper and lower limits can be combined with each other. That is, for example, it can be 0.01 to 10 mass%, further 0.1 to 5 mass%, and further 0.3 to 3 mass%.

[0025] The NIS-containing composition may be used at its original concentration, but may also be used in a mixture with other hair cosmetic compositions constituting a multi-component hair cosmetic. That is, the NIS-containing composition may be used as a mixture with other hair cosmetic compositions. An example of a mixture is a multi-component oxidative hair dye. A multi-component oxidative hair dye is composed of a plurality of hair cosmetic compositions including a first agent containing an alkaline agent and a second agent containing an oxidizing agent, and the mixture obtained by mixing the first agent and the second agent may be used. When used as a mixture, the content ratio of the nonionic surfactant in the mixture is not limited. That is, the content ratio of the nonionic surfactant when used is not limited, and when the entire mixture is taken as 100 mass%, the lower limit can be 0.025 mass%, further 0.05 mass%, and further 0.15 mass%. On the other hand, the upper limit can be 5 mass%, further 2.5 mass%, and further 1.5 mass%. The above upper and lower limits can be combined with each other. That is, for example, it can be 0.025 to 5 mass%, further 0.05 to 2.5 mass%, and further 0.15 to 1.5 mass%.

[0026] As described later, the surfactant may be a cationic surfactant, an anionic surfactant, or an amphoteric surfactant in addition to the nonionic surfactant described above. The NIS-containing composition may contain surfactants other than the nonionic surfactant, but it is usually preferable that they are not substantially contained.

[0027] (3) Ester oil (B) Ester oil is a type of oily component, which will be described later. A multiple-component hair cosmetic comprising a W / O type NIS-containing composition can have an ester oil-containing composition as a hair cosmetic composition. When the multiple-component hair cosmetic contains the ester oil-containing composition, it can improve the rinsing performance compared to when the multiple-component hair cosmetic does not contain the ester oil-containing composition. Furthermore, the ester oil is preferably contained in the W / O type NIS-containing composition rather than being contained in a composition other than the W / O type NIS-containing composition. In other words, it is preferable that the W / O type NIS-containing composition and the ester oil-containing composition are the same composition (a hair cosmetic composition in a W / O type emulsified state and containing a nonionic surfactant and an ester oil).

[0028] Ester oils include glyceryl triethylhexanoate, 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 acid, ethylhexyl palmitate ... Examples of the glyceryl stearate include 2-ethylhexyl ester, butyl stearate, stearyl stearate, hexyl laurate, decyl oleate, hexyldecyl dimethyloctanoate, octyldodecyl ricinoleate, fatty acid (C10-30) (cholesteryl / lanosteryl), di-2-ethylhexanoate ethylene glycol, 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, and lanolin derivatives. These may be used alone or in combination of two or more. Among these, those that are liquid at room temperature (particularly 25° C.) are preferred, and from the viewpoint of ease of rinsing, glyceryl tri-2-ethylhexanoate and cetyl 2-ethylhexanoate are particularly preferred.

[0029] When the hair cosmetic of the first embodiment includes an ester oil-containing composition, the content ratio of the ester oil contained in the ester oil-containing composition is not limited, but when the entire ester oil-containing composition is taken as 100% by mass, the lower limit can be 0.01% by mass, further 0.2% by mass, and further 0.5% by mass from the viewpoint of ease of rinsing. On the other hand, the upper limit can be 15% by mass, further 7% by mass, and further 3% by mass from the viewpoint of formulation stability. The above-mentioned upper and lower limits can be combined. That is, for example, it can be 0.01 to 15% by mass, further 0.2 to 7% by mass, and further 0.5 to 3% by mass.

[0030] In addition, the ester oil-containing composition may be used at its original concentration, but may be mixed with other hair cosmetic compositions constituting a multi-component hair cosmetic. That is, the ester oil-containing composition may be used as a mixture with other hair cosmetic compositions. When used as a mixture, the content ratio of the ester oil in the mixture is not limited. That is, the content ratio of the ester oil at the time of use is not limited, and when the entire mixture is taken as 100 mass%, the lower limit can be 0.005 mass%, further 0.1 mass%, and further 0.25 mass%. On the other hand, the upper limit can be 7.5 mass%, further 3.5 mass%, and further 1.5 mass%. The above upper and lower limits can be combined with each other. That is, for example, it can be 0.005 to 7.5 mass%, further 0.1 to 3.5 mass%, and further 0.25 to 1.5 mass%.

[0031] (4) Other ingredients Each hair cosmetic composition constituting the hair cosmetic of the first embodiment (multiple-component hair cosmetic) can contain other components in addition to the above-mentioned nonionic surfactant and ester oil. The other components include oily components other than ester oil, polymeric compounds, oxidizing agents, stabilizers, pH adjusters, preservatives, antioxidants, etc. These may be used alone or in combination of two or more.

[0032] (4-1) Oily components other than ester oil An oily component other than the ester oil is preferably included in order to make the hair cosmetic composition into a W / O type emulsified state. The incorporation of an oily component can improve the formulation stability (stability of the W / O type emulsified state), feel (feel of the hair after applying the hair cosmetic), and application feel. Examples of oily components other than ester oil include higher alcohols, silicones, hydrocarbons, oils and fats, waxes, higher fatty acids, etc. These may be used alone or in combination of two or more. Among these, higher alcohols and silicones are preferred. When the hair cosmetic composition constituting the hair cosmetic of the first embodiment (multi-component hair cosmetic) contains a higher alcohol and / or silicone, the formulation stability and feel (feel of the hair after application of the hair cosmetic composition) can be improved compared to when these are not contained.

[0033] Furthermore, it is preferable that the higher alcohol and / or silicone is contained in the W / O type NIS-containing composition rather than being contained in a composition other than the W / O type NIS-containing composition. That is, it is preferable that the W / O type NIS-containing composition contains a higher alcohol and / or silicone. Furthermore, as described above, it is preferable that the W / O type NIS-containing composition and the ester oil-containing composition are the same composition (a composition for hair cosmetics that is in a W / O type emulsified state and contains a nonionic surfactant and an ester oil), so it is particularly preferable that the composition for hair cosmetics constituting the first embodiment of the hair cosmetic (multiple-component type hair cosmetic) has a composition for hair cosmetics that is in a W / O type emulsified state, contains a nonionic surfactant and an ester oil, and contains a higher alcohol and / or silicone.

[0034] When the hair cosmetic composition contains an oily component other than the ester oil, the content ratio of the oily component other than the ester oil is not limited, but when the entire hair cosmetic composition is taken as 100 mass%, the lower limit can be 5 mass%, further 10 mass%, and further 15 mass%. On the other hand, the upper limit can be 50 mass%, further 40 mass%, and further 30 mass%. The above upper and lower limits can be combined. That is, for example, it can be 5 to 50 mass%, further 10 to 40 mass%, and further 15 to 30 mass%.

[0035] Among the oily components other than ester oils, alcohols having a carbon chain with 6 or more carbon atoms can be used as the higher alcohol. For example, higher alcohols having 8 to 40 carbon atoms are included. The skeleton may be saturated or unsaturated, and may be linear or branched. Specific examples include cetearyl alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol (cetanol), stearyl alcohol, arachyl alcohol, behenyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, linoleyl alcohol, linolenyl alcohol, lanolin alcohol, phytosterol, and cholesterol. These may be used alone or in combination of two or more. Among these, those that are liquid at room temperature (particularly 25° C.) are preferred, and isostearyl alcohol and / or 2-octyldodecanol are preferred, and further, isostearyl alcohol and 2-octyldodecanol are preferred.

[0036] When the hair cosmetic composition contains a higher alcohol, the content ratio of the higher alcohol is not limited, but when the entire hair cosmetic composition is taken as 100 mass%, the lower limit can be 3 mass%, further 8 mass%, and further 12 mass%. On the other hand, the upper limit can be 50 mass%, further 40 mass%, and further 30 mass%. The above upper and lower limits can be combined. That is, for example, it can be 3 to 50 mass%, further 8 to 40 mass%, and further 12 to 30 mass%.

[0037] In addition, the hair cosmetic composition containing a higher alcohol (the higher alcohol-containing composition) may be used at its original concentration, but may be mixed with other hair cosmetic compositions constituting a multi-component type hair cosmetic. That is, the higher alcohol-containing composition can be used as a mixture with other hair cosmetic compositions. When used as a mixture, the content ratio of the higher alcohol in the mixture is not limited. That is, the content ratio of the higher alcohol at the time of use is not limited, and when the entire mixture is taken as 100 mass%, the lower limit can be 1.5 mass%, further 4 mass%, and further 6 mass%. On the other hand, the upper limit can be 25 mass%, further 20 mass%, and further 15 mass%. The above upper and lower limits can be combined with each other. That is, for example, it can be 1.5 to 25 mass%, further 4 to 20 mass%, and further 6 to 15 mass%.

[0038] Among the oily components other than ester oil, 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 copolymers (aminoethylaminopropyldimethicone), etc.), 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, those that are liquid at room temperature (particularly 25°C) are preferred. Furthermore, methylphenylpolysiloxane is preferred from the viewpoint of improving the feel (comfort) of hair while ensuring formulation stability.

[0039] When the hair cosmetic composition contains silicone, the content of silicone is not limited, but when the entire hair cosmetic composition is taken as 100 mass%, the lower limit can be 0.1 mass%, further 1 mass%, and further 2 mass%. On the other hand, the upper limit can be 40 mass%, further 20 mass%, and further 10 mass%. The above upper and lower limits can be combined. That is, for example, it can be 0.1 to 40 mass%, further 1 to 20 mass%, and further 2 to 10 mass%.

[0040] In addition, the silicone-containing hair cosmetic composition (silicone-containing composition) may be used at its original concentration, but may be mixed with other hair cosmetic compositions constituting a multi-component hair cosmetic. That is, the silicone-containing composition can be used as a mixture with other hair cosmetic compositions. When used as a mixture, the content ratio of silicone in the mixture is not limited. That is, the content ratio of silicone when used is not limited, and when the entire mixture is taken as 100 mass%, the lower limit can be 0.05 mass%, further 0.5 mass%, and further 1 mass%. On the other hand, the upper limit can be 20 mass%, further 10 mass%, and further 5 mass%. The above upper and lower limits can be combined with each other. That is, for example, it can be 0.05 to 20 mass%, further 0.5 to 10 mass%, and further 1 to 5 mass%.

[0041] Among the oily components other than ester oil, examples of hydrocarbons include liquid paraffin (mineral oil), liquid isoparaffin, paraffin (paraffin wax), olefin oligomer, polyisobutene, hydrogenated polyisobutene, synthetic squalane, squalene, squalane (hydrogenated squalene), polybutene, polyethylene (polyethylene wax), microcrystalline wax, petrolatum, ozokerite, ceresin, limonene, and turpentine. These may be used alone or in combination of two or more. Among these, those that are liquid at room temperature (particularly 25°C) are preferred.

[0042] Among the oily components other than ester oil, examples of fats and oils include vegetable oils (vegetable fats and oils) and animal oils (animal fats and oils). Examples of vegetable oils include camellia oil, rice bran oil, rice germ oil, macadamia seed oil, meadowfoam oil, jojoba seed oil, rice germ oil, sunflower seed oil, olive oil, grape seed oil, almond oil, apricot kernel oil, peach kernel oil, persic oil, shea butter, rosehip oil, tea seed oil, sasanqua oil, Argania spinosa kernel oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, cacao butter, corn oil, peanut oil, rapeseed oil, evening primrose oil, wheat germ oil, pearl barley oil, avocado oil, carrot oil, castor oil, linseed oil, coconut oil, and palm oil. Examples of animal oils include beef tallow, lard, mink oil, egg yolk oil, etc. These may be used alone or in combination of two or more. Among these, those that are liquid at room temperature (particularly 25° C.) are preferred.

[0043] Among the oily components other than ester oil, waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, lanolin, spermaceti, rice bran wax, sugarcane wax, palm wax, montan wax, cotton wax, bayberry wax, ivory wax, kapok wax, shellac wax, etc. These may be used alone or in combination of two or more. Among these, those that are liquid at room temperature (particularly 25°C) are preferred.

[0044] Among the oily components other than ester oils, examples of higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, hydroxystearic acid, 12-hydroxystearic acid, oleic acid, undecylenic acid, linoleic acid, ricinoleic acid, and lanolin fatty acid. These may be used alone or in combination of two or more. Among these, those that are liquid at room temperature (particularly 25° C.) are preferred.

[0045] (4-2) High molecular compound The polymer compound is a compound with a high molecular weight. The polymer compound is preferably contained in the W / O type NIS-containing composition rather than being contained in a composition other than the W / O type NIS-containing composition. Furthermore, as described above, since the W / O type NIS-containing composition and the ester oil-containing composition are preferably the same composition, the polymer compound is also preferably contained in these compositions. That is, the composition is preferably a hair cosmetic composition that is in a W / O type emulsified state and contains a nonionic surfactant and a polymer compound, or a hair cosmetic composition that is in a W / O type emulsified state and contains a nonionic surfactant, an ester oil, and a polymer compound. In these compositions, the polymer compound can more effectively exert the formulation stability. The structure of the polymeric compound is not limited, but is usually an organic compound having a carbon skeleton (i.e., the polymeric compound does not usually contain silicone). The molecular weight is also not limited, but is usually 10,000 or more.

[0046] Polymer compounds can be broadly classified into oil-soluble polymer compounds that exhibit oil solubility and water-soluble polymer compounds that exhibit water solubility, and it is preferable that the hair cosmetic composition contains at least one of these. That is, it is preferable that the polymer compound contains an oil-soluble polymer compound and / or a water-soluble polymer compound.

[0047] Among the polymer compounds, the oil-soluble polymer compounds are those that dissolve in the oil phase of the W / O type NIS-containing composition (i.e., dissolve in the main component of the oil phase). Examples of the oil-soluble polymer compounds include cellulose derivatives (oil-soluble cellulose derivatives), starch derivatives (oil-soluble starch derivatives), fatty acid polyesters (oil-soluble fatty acid polyesters), vinyl polymers (oil-soluble vinyl polymers), and acrylic polymers (oil-soluble acrylic polymers). These may be used alone or in combination of two or more. In addition, these are preferably nonionic polymer compounds (nonionic oil-soluble polymer compounds).

[0048] Among the above, examples of the cellulose derivatives include cellulose ether (oil-soluble cellulose ether), cellulose ester (oil-soluble cellulose ester), etc. These may be used alone or in combination of two or more. As described above, these are preferably nonionic. That is, for example, nonionic cellulose ether is preferable. Among these, examples of the cellulose ether include methyl cellulose, ethyl cellulose, ethyl methyl cellulose, etc. These may be used alone or in combination of two or more kinds. Among the above, examples of starch derivatives include starch fatty acid esters, dextrin fatty acid esters, etc. More specifically, examples include dextrin palmitate, dextrin ethylhexanoate, etc. These may be used alone or in combination of two or more. Among the above, examples of fatty acid polyesters include glyceryl behenate / eicosandioate, glyceryl behenate, glyceryl eicosandioate, etc. 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.

[0049] Among the polymer compounds, the water-soluble polymer compounds are those that dissolve in the aqueous phase of the W / O type NIS-containing composition (i.e., dissolve in water). Examples of the water-soluble polymer compounds include cellulose derivatives (water-soluble cellulose derivatives), vinyl polymers (water-soluble vinyl polymers), acrylic polymers (water-soluble acrylic polymers), glucose derivatives (cyclodextrin, starch), and the like. These may be used alone or in combination of two or more. Furthermore, these water-soluble polymers are preferably ionic, and in particular, cationic water-soluble polymers.

[0050] Among the above, examples of the cellulose derivatives include cellulose ether (water-soluble cellulose ether), cellulose ester (water-soluble cellulose ester), etc. These may be used alone or in combination of two or more kinds. Among these, examples of the cellulose ether include carboxymethyl cellulose, carboxyethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, etc. These may be used alone or in combination of two or more kinds. The cellulose ether is preferably an ionic cellulose ether. The ionic cellulose ether may be any of cationic cellulose ether, anionic cellulose ether, amphoteric cellulose ether, and nonionic cellulose ether, and these may be used alone or in combination of two or more. In the hair cosmetic composition of the first embodiment, however, from the viewpoint of improving the feel (feel of hair after applying the hair cosmetic composition of the first embodiment), cationic cellulose ether (cationic water-soluble cellulose ether) is particularly preferred. Examples of cationic cellulose ether include O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride (polyquaternium-10), hydroxyethyl cellulose dimethyl diallyl ammonium chloride, and the like. Among these, O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride is preferred.

[0051] Other examples of water-soluble polymers that have polysaccharides other than cellulose in their structure and have cationic properties include dextran hydroxypropyltrimonium chloride. Examples of acrylic polymers include polyquaternium-11 (vinylpyrrolidone·N,N-dimethylaminoethyl methacrylic acid copolymer sulfate solution). These may be used alone or in combination of two or more.

[0052] When the hair cosmetic composition contains a polymer compound, the content ratio of the polymer compound is not limited, but when the entire hair cosmetic composition is taken as 100 mass%, the lower limit can be 0.01 mass%, further 0.1 mass%, and further 0.5 mass%. On the other hand, the upper limit can be 5 mass%, further 3 mass%, and further 2 mass%. The above upper and lower limits can be combined. That is, for example, it can be 0.01 to 5 mass%, further 0.1 to 3 mass%, and further 0.5 to 2 mass%.

[0053] When the hair cosmetic composition contains a polymer compound and further contains both an oil-soluble polymer compound and a water-soluble polymer compound, the ratio of the content of each polymer compound in the total 100% by mass of the hair cosmetic composition (oil-soluble polymer compound) / (water-soluble polymer compound) is not limited, but the lower limit can be 0.01, further 0.1, and further 0.2. Meanwhile, the upper limit can be 5, further 3, and further 1. The above upper and lower limits can be combined. That is, for example, it can be 0.01 to 5, further 0.1 to 3, and further 0.2 to 1.

[0054] (4-3) Oxidizing agent The oxidizing agent is a component that exerts an oxidizing effect. The oxidizing agent is preferably contained in the W / O type NIS-containing composition rather than being contained in a composition other than the W / O type NIS-containing composition. Furthermore, as described above, since the W / O type NIS-containing composition and the ester oil-containing composition are preferably the same composition, the oxidizing agent is also preferably contained in these compositions. That is, the composition is preferably a hair cosmetic composition that is in a W / O type emulsified state and contains a nonionic surfactant and an oxidizing agent, or a hair cosmetic composition that is in a W / O type emulsified state and contains a nonionic surfactant, an ester oil, and an oxidizing agent.

[0055] The oxidizing action of the oxidizing agent is usually exerted by mixing with another hair cosmetic composition (other agent) different from the hair cosmetic composition containing the oxidizing agent. That is, for example, the hair cosmetic of the first embodiment can be a two-agent type hair cosmetic composed of a first agent (first hair cosmetic composition) and a second agent (second hair cosmetic composition). Furthermore, in this case, the first agent can preferably contain an alkaline agent, and the second agent can preferably contain an oxidizing agent. In this case, it is preferable that the oxidizing agent is contained in the second agent, but not in the first agent. Then, the oxidizing action of the oxidizing agent is exerted by mixing the first agent and the second agent.

[0056] The oxidizing agent may be any type that can exert an oxidizing effect, and examples thereof include peroxide-based oxidizing agents. Peroxide-based oxidizing agents are compounds that have a structure represented by "-OO-". 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, among the inorganic compounds described below, hydrogen peroxide is more preferred.

[0057] Among the above, examples of inorganic compounds among the peroxide-based oxidizing agents include peroxides such as hydrogen peroxide (which may be used as inclusions or adducts of hydrogen peroxide, such as urea peroxide, melamine peroxide, hydrogen peroxide adducts of phosphates, and hydrogen peroxide adducts of pyrophosphates); peroxide salts (alkali metal salts such as potassium salts and sodium salts, alkaline earth salts such as magnesium salts, calcium salts, strontium salts, and barium salts, and zinc salts); percarbonates (alkali metal salts such as potassium salts and sodium salts); perborates (alkali metal salts such as potassium salts and sodium salts); permanganates (alkali metal salts such as potassium salts and sodium salts, alkaline earth salts such as magnesium salts, calcium salts, strontium salts, and barium salts), and the like. These may be used alone or in combination of two or more.

[0058] In addition, organic compounds among the peroxide-based oxidizing agents include percarboxylic acids such as performic acid, peracetic acid, and perbenzoic acid, and their salts. Examples of salts of percarboxylic acids include alkali metal salts such as potassium salts and sodium salts. These may be used alone or in combination of two or more. Furthermore, non-peroxide oxidizing agents (i.e., compounds not containing a structure represented by "-OO-") include bromates (alkali metal salts such as potassium salts and sodium salts), etc. These may be used alone or in combination of two or more.

[0059] When the hair cosmetic composition contains an oxidizing agent, the content ratio of the oxidizing agent is not limited, but when the entire hair cosmetic composition is taken as 100 mass%, the lower limit can be 0.1 mass%, further 2 mass%, and further 3 mass%. On the other hand, the upper limit can be 30 mass%, further 20 mass%, and further 15 mass%. The above upper and lower limits can be combined. That is, for example, it can be 0.1 to 30 mass%, further 2 to 20 mass%, and further 3 to 15 mass%.

[0060] In addition, the composition for hair cosmetics containing an oxidizing agent (oxidizing agent-containing composition) may be used at its original concentration, but may be mixed with other compositions for hair cosmetics constituting a multi-component type hair cosmetic. That is, the oxidizing agent-containing composition can be used as a mixture with other compositions for hair cosmetics. When used as a mixture, the content ratio of the oxidizing agent in the mixture is not limited. That is, the content ratio of the oxidizing agent at the time of use is not limited, and when the entire mixture is taken as 100 mass%, the lower limit can be 0.05 mass%, further 1 mass%, and further 2 mass%. On the other hand, the upper limit can be 15 mass%, further 10 mass%, and further 7.5 mass%. The above upper and lower limits can be combined with each other. That is, for example, it can be 0.05 to 15 mass%, further 1 to 10 mass%, and further 2 to 7.5 mass%.

[0061] (4-4) Stabilizers The stabilizer can improve the stability of the oxidizing agent. The stabilizer may be contained in any of the hair cosmetic compositions constituting the hair cosmetic of the first embodiment, but is preferably contained together with the oxidizing agent in view of the above-mentioned action. Examples of the stabilizer 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 the cations constituting the salt 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 reducing the contribution to the stability of the formulation.

[0062] When the hair cosmetic composition contains a stabilizer, the content ratio of the stabilizer is not limited, but when the entire hair cosmetic composition is taken as 100 mass%, the lower limit can be 0.01 mass%, further 0.1 mass%, and further 0.2 mass%. On the other hand, the upper limit can be 10 mass%, further 5 mass%, and further 3 mass%. The above upper and lower limits can be combined. That is, for example, it can be 0.01 to 10 mass%, further 0.1 to 5 mass%, and further 0.2 to 3 mass%.

[0063] (4-5) pH adjuster The pH adjuster may be an acid and / or a base. The acid includes inorganic acids and their salts, and organic acids and their salts. Examples of inorganic acids include phosphoric acid, hydrochloric acid, sulfuric acid, boric acid, etc. 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, pyrrolidone carboxylic acid (PCA), etc. Examples of their salts include alkali metal salts and ammonium salts. These may be used alone or in combination of two or more.

[0064] The base includes organic bases, inorganic bases, and salts thereof. Examples of the organic base include organic amines, basic amino acids and their salts, guanidine and its salts, etc. These may be used alone or in combination of two or more kinds. 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.

[0065] (4-6) 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.

[0066] (4-7) Antioxidants Examples of the antioxidant include ascorbic acid (L-ascorbic acid), anhydrous sodium sulfite, etc. These may be used alone or in combination of two or more.

[0067] (4-8) Further ingredients The hair cosmetic composition constituting the hair cosmetic of the first embodiment may contain other components in addition to the above-mentioned nonionic surfactant, ester oil, oily component other than ester oil, polymer compound, oxidizing agent, stabilizer, pH adjuster, preservative, and antioxidant. Other components 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, plant extracts, herbal extracts, vitamins, pigments, fragrances, ultraviolet absorbers, and at least one component selected from those listed in the "Standards for Quasi-Drug Raw Materials" (revised in March 2021, Yakuji Nipposha). These may be used alone or in combination of two or more.

[0068] (5) Dosage form, properties and packaging material The hair cosmetic composition of the first aspect, which is composed of the various components as described above, can be suitably used, specifically, as an oxidative hair dye agent, a bleaching agent, a dye removing agent, a dye removing agent for bleaching and decolorizing (an agent containing an oxidizing agent), a shampoo, a rinse, a treatment, a conditioner, a cleansing agent, or the like. The hair cosmetic of the first embodiment and the hair cosmetic composition constituting the hair cosmetic of the first embodiment may be in any form (form at 25°C), but may be, for example, a cream, a paste, a liquid, a gel, or a foam. The properties and the specific viscosity are not limited, but may be, for example, 1 to 300,000 mPa·s. It may be adjusted to a particularly viscous liquid. That is, it may be, for example, 500 to 300,000 mPa·s. The lower limit of this viscosity may be 500 mPa·s, 1,000 mPa·s, or 5,000 mPa·s. On the other hand, the upper limit of the viscosity may be 250,000 mPa·s, 225,000 mPa·s, or 200,000 mPa·s. The upper and lower limits may be combined in any combination. That is, for example, it can be 500 to 250,000 mPa·s, 1,000 to 225,000 mPa·s, or 5,000 to 200,000 mPa·s. The above viscosity is measured at 25° C. using a B-type viscometer. The packaging material for storing the hair cosmetic composition constituting the hair cosmetic of the first embodiment is not limited, and may be a tube-shaped packaging material, a pump-type packaging material, a bottle-type packaging material, a double can-type packaging material, an applicator, a pouch, etc. Among these, the packaging material for storing the hair cosmetic composition containing the above-mentioned oxidizing agent, particularly the hair cosmetic composition which is a W / O type NIS-containing composition containing an oxidizing agent, is preferably a tube-shaped packaging material, and furthermore, from the viewpoint of formulation stability, a tube-shaped packaging material whose inner surface is made of aluminum is more preferable. On the other hand, when the hair cosmetic composition is a hair care item, a pump-type packaging material or a bottle-type packaging material is preferable. Among these, a pump-type packaging material is preferable from the viewpoint of ease of use.

[0069] (6) Application of the hair cosmetic composition according to the first aspect The hair cosmetic of the first embodiment may be applied to hair in any manner. For example, the hair cosmetic of the first embodiment may be applied to hair using a tool such as a comb, a brush, or a spatula. Among these, application to hair using a comb is preferred from the viewpoint of applicability. In this case, the details of the comb used are not limited, but for example, a comb having a shape exemplified in FIG. 1 may be used. Furthermore, the material of the comb is not limited, but a resin comb may be used, and furthermore, a polypropylene comb may be used. Although the above-mentioned hair cosmetic can be easily applied by using a comb, the conventional hair cosmetic has a problem that the hair cosmetic attached to the comb becomes difficult to wash off when a resin comb is used. In this respect, the hair cosmetic of the first embodiment is excellent in that it can solve the above problem because it has improved wash-off performance.

[0070] When applying the hair cosmetic to hair, it may be applied to the hair by the user's hands. It may also be applied by impregnation (dipping), coating, penetration, or other operations. These may be used alone or in combination of two or more. Furthermore, the hair cosmetic may be applied to hair wet with water or hot water, or to dry hair.

[0071] The hair to which the hair cosmetic composition is applied includes, for example, hair on the head, beard, eyebrows, body hair, and other parts of the body. The type of biological hair to which the composition can be applied is not limited, but the composition can be suitably used on human hair. When the composition is applied to human hair, the composition may be applied to hair of any condition or color. That is, the composition may be applied to, for example, black hair, white hair, bleached hair (black hair that has been bleached), dyed hair, and the like. The application to dyed hair includes repairing, changing, adding, and the like to the color of dyed hair.

[0072] [2] Hair cosmetic preparation (second embodiment of the hair cosmetic preparation) The hair cosmetic composition of the second embodiment is a hair cosmetic composition in a water-in-oil type emulsion state, The composition is characterized by containing (A) a nonionic surfactant. That is, the hair cosmetic composition of the second embodiment is a single-component hair cosmetic composition.

[0073] (1) Emulsified state Water-in-oil type (hereinafter, simply referred to as "W / O type") 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. In other words, it can be said to be an emulsified state in which an outer phase is formed by an oil-based component and an inner phase is formed by an aqueous component. The W / O type emulsified state may be determined in any manner, 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 type emulsified state.

[0074] In contrast, an oil-in-water type emulsion (hereinafter simply referred to as "O / W type") is an emulsion state in which the aqueous component forms a continuous phase and the oil component is dispersed within the continuous phase. In other words, it can be said to be an emulsion state in which the aqueous component forms an outer phase and the oil component forms an inner phase. Note that an O / W type emulsion state may be determined in any manner, but for example, when an agent is dropped into water and stirred (lightly stirred), if the agent is dispersed in the water, it can be determined that the agent is in an O / W type emulsion state.

[0075] (2) Nonionic surfactants The nonionic surfactant is a nonionic surfactant. When the hair cosmetic composition of the second embodiment contains a nonionic surfactant, the rinsing performance can be improved compared to when the hair cosmetic composition of the second embodiment does not contain a nonionic surfactant. In addition, the gloss of the appearance of the hair cosmetic composition of the second embodiment itself can be improved.

[0076] The type of nonionic surfactant used is not limited, but examples of the nonionic surfactant include ester-type nonionic surfactants, ether-type nonionic surfactants (including POE alkyl ether as described below), alkyl glucosides, etc. These may be used alone or in combination of two or more. Among these, from the viewpoint of improving the gloss of the agent itself in hair dyes, and from the viewpoint of improving foaming performance in shampoos, nonionic surfactants other than POE alkyl ethers are preferred, and furthermore, ester-type nonionic surfactants are preferred, and furthermore, ester-type nonionic surfactants having a fatty acid skeleton (i.e., having a fatty acid residue) are more preferred.

[0077] As for the types of ester-type nonionic surfactants and ether-type nonionic surfactants, the details explained in the hair cosmetic composition of the first embodiment can be applied as they are. Among them, from the viewpoint of being less likely to cause emulsion destruction and improving rinse-off performance, ester-type nonionic surfactants are preferred, POE sorbitan fatty acid esters are preferred, and further, POE sorbitan monooleate is preferred from the viewpoint of being less likely to cause emulsion destruction and improving rinse-off performance.

[0078] The content ratio of the nonionic surfactant contained in the hair cosmetic composition of the second embodiment is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100 mass%, the lower limit can be 0.01 mass%, further 0.1 mass%, and further 0.3 mass%. On the other hand, the upper limit can be 10 mass%, further 5 mass%, and further 3 mass%. The above upper and lower limits can be combined. That is, for example, it can be 0.01 to 10 mass%, further 0.1 to 5 mass%, and further 0.3 to 3 mass%.

[0079] As described later, the surfactant may be a cationic surfactant, an anionic surfactant, or an amphoteric surfactant in addition to the nonionic surfactant described above. The hair cosmetic may contain surfactants other than the nonionic surfactant, but it is usually preferable that the hair cosmetic does not substantially contain such surfactants.

[0080] (3) Ester oil Ester oil is a type of oily component, which will be described later. When the hair cosmetic composition of the second embodiment contains ester oil, the wash-off performance can be improved compared to when the hair cosmetic composition of the second embodiment does not contain ester oil. As for the type of ester oil, the contents explained in the hair cosmetic composition of the first embodiment can be applied as is. Among them, those that are liquid at room temperature (particularly 25°C) are preferred, and in particular, glyceryl tri-2-ethylhexanoate and cetyl 2-ethylhexanoate are preferred from the viewpoint of ease of washing off.

[0081] When the hair cosmetic composition of the second embodiment contains an ester oil, the lower limit can be 0.01% by mass, further 0.2% by mass, and further 0.5% by mass from the viewpoint of easiness of rinsing off, when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass. On the other hand, the upper limit can be 15% by mass, further 7% by mass, and further 3% by mass from the viewpoint of formulation stability. The above upper and lower limits can be combined. That is, for example, it can be 0.01 to 15% by mass, further 0.2 to 7% by mass, and further 0.5 to 3% by mass.

[0082] (4) Other ingredients The hair cosmetic composition of the second embodiment (single-agent type hair cosmetic composition) can contain other components in addition to the above-mentioned nonionic surfactant and ester oil. Examples of other components include oily components other than ester oil, polymeric compounds, oxidizing agents, stabilizers, pH adjusters, preservatives, antioxidants, etc. These may be used alone or in combination of two or more.

[0083] (4-1) Oily components other than ester oil An oily component other than the ester oil is preferably included in order to make the hair cosmetic of the second embodiment into a W / O type emulsified state. The incorporation of an oily component can improve the formulation stability (stability of the W / O type emulsified state), feel (feel of the hair after the hair cosmetic composition is applied), and application feel. As the type of oily component other than the ester oil, the contents explained in the hair cosmetic of the first embodiment can be applied as is. Among them, higher alcohols and silicones are preferred. When the hair cosmetic of the second embodiment contains higher alcohols and / or silicones, the formulation stability and feel (feel of the hair after the hair cosmetic composition is applied) can be improved compared to when it does not contain them.

[0084] When the hair cosmetic of the second embodiment contains an oily component other than the ester oil, the content ratio of the oily component other than the ester oil is not limited, but when the entire hair cosmetic of the second embodiment is taken as 100% by mass, the lower limit can be 5% by mass, further 10% by mass, and further 15% by mass. On the other hand, the upper limit can be 50% by mass, further 40% by mass, and further 30% by mass. The above upper and lower limits can be combined. That is, for example, it can be 5 to 50% by mass, further 10 to 40% by mass, and further 15 to 30% by mass.

[0085] Of the oily components other than the ester oil, the types of higher alcohols can be the same as those described in the hair cosmetic composition of the first embodiment. Among them, those that are liquid at room temperature (particularly 25° C.) are preferred, and isostearyl alcohol and / or 2-octyldodecanol are preferred, with isostearyl alcohol and 2-octyldodecanol being more preferred.

[0086] When the hair cosmetic composition of the second embodiment contains a higher alcohol, the content ratio of the higher alcohol is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass, the lower limit can be 3% by mass, further 8% by mass, and further 12% by mass. On the other hand, the upper limit can be 50% by mass, further 40% by mass, and further 30% by mass. The above upper and lower limits can be combined. That is, for example, it can be 3 to 50% by mass, further 8 to 40% by mass, and further 12 to 30% by mass.

[0087] Among the oily components other than the ester oil, the silicone type can be the same as that described in the hair cosmetic of the first embodiment. Among them, those that are liquid at room temperature (particularly 25°C) are preferred. Furthermore, methylphenylpolysiloxane is preferred from the viewpoint of improving the feel of the hair (fingers can be run through it) while ensuring the stability of the formulation.

[0088] When the hair cosmetic composition of the second embodiment contains silicone, the content ratio of silicone is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass, the lower limit can be 0.1% by mass, further 1% by mass, and further 2% by mass. On the other hand, the upper limit can be 40% by mass, further 20% by mass, and further 10% by mass. The above upper and lower limits can be combined. That is, for example, it can be 0.1 to 40% by mass, further 1 to 20% by mass, and further 2 to 10% by mass.

[0089] Of the oily components other than the ester oil, the types of hydrocarbons, oils and fats, waxes, and higher fatty acids can be the same as those described in the hair cosmetic composition of the first embodiment. Among them, those that are liquid at room temperature (particularly 25° C.) are preferred.

[0090] (4-2) High molecular compound The polymer compound is a compound having a high molecular weight. The inclusion of the polymer compound can more effectively exert the stability of the formulation. The structure of the polymer compound is not limited, but it is usually an organic compound having a carbon skeleton (i.e., the polymer compound does not usually contain silicone). In addition, the molecular weight is not limited, but it is usually 10,000 or more.

[0091] Polymer compounds can be broadly classified into oil-soluble polymer compounds that exhibit oil solubility and water-soluble polymer compounds that exhibit water solubility, and the hair cosmetic composition of the second embodiment preferably contains at least one of these. That is, the polymer compound preferably contains an oil-soluble polymer compound and / or a water-soluble polymer compound.

[0092] Among the polymer compounds, the oil-soluble polymer compounds are polymer compounds that dissolve in the oil phase of the hair cosmetic composition of the second embodiment (i.e., dissolve in the main component of the oil phase). Examples of the oil-soluble polymer compounds include cellulose derivatives (oil-soluble cellulose derivatives), starch derivatives (oil-soluble starch derivatives), fatty acid polyesters (oil-soluble fatty acid polyesters), vinyl polymers (oil-soluble vinyl polymers), and acrylic polymers (oil-soluble acrylic polymers). These may be used alone or in combination of two or more. In addition, these are preferably nonionic polymer compounds (nonionic oil-soluble polymer compounds). Among the above, the types of cellulose derivatives can be directly applied to the contents explained in the hair cosmetic composition of the first embodiment. Among them, ethyl cellulose is preferred from the viewpoint of good solubility in the oil phase.

[0093] Among the polymer compounds, the water-soluble polymer compounds are those that dissolve in the aqueous phase of the hair cosmetic composition of the second embodiment (i.e., dissolve in water). Examples of the water-soluble polymer compounds include cellulose derivatives (water-soluble cellulose derivatives), vinyl polymers (water-soluble vinyl polymers), acrylic polymers (water-soluble acrylic polymers), glucose derivatives (cyclodextrin, starch), and the like. These may be used alone or in combination of two or more. Furthermore, these water-soluble polymers are preferably ionic, and in particular, cationic water-soluble polymers.

[0094] Among the above, the types of cellulose derivatives can be directly applied to the contents explained in the hair cosmetic composition of the first embodiment. Among them, O-[2-hydroxy-3-(trimethylammonio)propyl]hydroxyethyl cellulose chloride is preferred. In addition, as to the type of polymer compound that is a water-soluble polymer having a polysaccharide other than cellulose in its structure and has cationic properties, the details explained in the hair cosmetic composition of the first embodiment can be applied as is.

[0095] When the hair cosmetic composition of the second embodiment contains a polymer compound, the content ratio of the polymer compound is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass, the lower limit can be 0.01% by mass, further 0.1% by mass, and further 0.5% by mass. On the other hand, the upper limit can be 5% by mass, further 3% by mass, and further 2% by mass. The above upper and lower limits can be combined. That is, for example, it can be 0.01 to 5% by mass, further 0.1 to 3% by mass, and further 0.5 to 2% by mass.

[0096] When the hair cosmetic of the second embodiment contains a polymer compound and further contains both an oil-soluble polymer compound and a water-soluble polymer compound, the ratio of the content of each polymer compound in the total hair cosmetic of the second embodiment (oil-soluble polymer compound) / (water-soluble polymer compound) is not limited, but the lower limit can be 0.01, further 0.1, and further 0.2. Meanwhile, the upper limit can be 5, further 3, and further 1. The above upper and lower limits can be combined. That is, for example, it can be 0.01 to 5, further 0.1 to 3, and further 0.2 to 1.

[0097] (4-3) Oxidizing agent The oxidizing agent is a component that exerts an oxidizing effect. The type of the oxidizing agent is not limited as long as it can exert an oxidizing effect, and the contents described in the first embodiment of the hair cosmetic composition can be applied as they are. When the hair cosmetic composition of the second embodiment contains an oxidizing agent, the content ratio of the oxidizing agent is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass, the lower limit can be 0.1% by mass, further 2% by mass, and further 3% by mass. On the other hand, the upper limit can be 30% by mass, further 20% by mass, and further 15% by mass. The above upper and lower limits can be combined with each other. That is, for example, it can be 0.1 to 30% by mass, further 2 to 20% by mass, and further 3 to 15% by mass.

[0098] (4-4) Stabilizers The stabilizer can improve the stability of the oxidizing agent. The types of stabilizers are the same as those described in the first embodiment of the hair cosmetic. Among them, phenoxyethanol and / or salicylic acid are preferred from the viewpoint of reducing the influence on the stability of the formulation.

[0099] When the hair cosmetic composition of the second embodiment contains a stabilizer, the content ratio of the stabilizer is not limited, but when the entire hair cosmetic composition of the second embodiment is taken as 100% by mass, the lower limit can be 0.01% by mass, further 0.1% by mass, and further 0.2% by mass. On the other hand, the upper limit can be 10% by mass, further 5% by mass, and further 3% by mass. The above upper and lower limits can be combined with each other. That is, for example, it can be 0.01 to 10% by mass, further 0.1 to 5% by mass, and further 0.2 to 3% by mass.

[0100] (4-5) pH adjuster The pH adjuster may be an acid and / or a base. The types of pH adjusters may be the same as those described in the first embodiment of the hair cosmetic composition.

[0101] (4-6) 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] (4-7) Antioxidants Examples of the antioxidant include ascorbic acid (L-ascorbic acid), anhydrous sodium sulfite, etc. These may be used alone or in combination of two or more.

[0103] (4-8) Further ingredients The hair cosmetic of the second embodiment may contain other ingredients in addition to the above-mentioned nonionic surfactants, ester oils, oily components other than ester oils, polymeric compounds, oxidizing agents, stabilizers, pH adjusters, preservatives, and antioxidants. The 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, plant extracts, herbal extracts, vitamins, pigments, fragrances, ultraviolet absorbers, and at least one ingredient selected from those listed in the "Standards for Quasi-Drug Raw Materials" (revised in March 2021, Yakuji Nipposha). These may be used alone or in combination of two or more.

[0104] (5) Dosage form, properties and packaging material The hair cosmetic composition of the second aspect as described above can be suitably used, specifically, as an oxidative hair dye agent, a bleaching agent, a dye removing agent, a dye removing agent for bleaching and decolorizing (an agent containing an oxidizing agent), a shampoo, a rinse, a treatment, a conditioner, a cleansing agent, or the like. The formulation of the hair cosmetic composition of the second embodiment (formulation at 25°C) is not limited, but may be, for example, a cream, paste, liquid, gel, or foam. The properties are not limited, and the specific viscosity is not limited, but may be, for example, 1 to 300,000 mPa·s. It may be adjusted to a particularly viscous liquid. That is, it may be, for example, 500 to 300,000 mPa·s. The lower limit of this viscosity may be 500 mPa·s, 1,000 mPa·s, or 5,000 mPa·s. On the other hand, the upper limit of the viscosity may be 250,000 mPa·s, 225,000 mPa·s, or 200,000 mPa·s. The upper and lower limits described above may be combined with each other. That is, for example, it can be 500 to 250,000 mPa·s, 1,000 to 225,000 mPa·s, or 5,000 to 200,000 mPa·s. The above viscosity is measured at 25° C. using a B-type viscometer. The packaging material for storing the hair cosmetic of the second embodiment is not limited, and may be a tube-shaped packaging material, a pump-type packaging material, a bottle-type packaging material, a double can-type packaging material, an applicator, a pouch, etc. Among these, the packaging material for storing the hair cosmetic of the second embodiment containing the above-mentioned oxidizing agent is preferably a tube-shaped packaging material, and furthermore, from the viewpoint of formulation stability, a tube-shaped packaging material whose inner surface is made of aluminum is more preferable. On the other hand, when the hair cosmetic of the second embodiment is a hair care item, a pump-type packaging material or a bottle-type packaging material is preferable. Among these, a pump-type packaging material is preferable from the viewpoint of ease of use.

[0105] (6) Application of the hair cosmetic composition according to the second aspect The hair cosmetic of the second embodiment may be applied to hair in any manner. For example, the hair cosmetic may be applied to hair using a tool such as a comb, brush, or spatula. Among these, application to hair using a comb is preferred from the viewpoint of applicability. In this case, the details of the comb to be used are not limited, but the same selection as in the hair cosmetic of the first embodiment may be made. Furthermore, when applying the hair cosmetic of the second embodiment to hair, it may be applied to hair using the user's hands. Furthermore, it may be applied by operations such as impregnation (dipping), coating, and penetration. These may be used alone or in combination of two or more. Furthermore, the hair cosmetic may be applied to hair wet with water or warm water, or to dry hair.

[0106] The hair to which the hair cosmetic composition of the second embodiment is applied includes, for example, hair on the head, beard, eyebrows, body hair, and other parts of the body. There is no limitation on the type of biological hair to which the composition can be applied, but the composition can be suitably applied to human hair. When the composition is applied to human hair, the composition may be applied to hair of any condition or color. That is, the composition may be applied to, for example, black hair, white hair, bleached hair (black hair that has been bleached), dyed hair, and the like. Application to dyed hair includes repairing, changing, adding, and the like to the color of dyed hair.

[0107] [3] Hair cosmetic preparation (third aspect of the hair cosmetic preparation) The hair cosmetic of the third aspect is a hair cosmetic to be used on hair to which a hair composition that forms a water-in-oil emulsion has been applied, and / or on hair to which a mixture of a hair cosmetic composition that forms a water-in-oil emulsion and a hair cosmetic composition that forms an oil-in-water emulsion has been applied, and is characterized by comprising (A) a nonionic surfactant.

[0108] The hair cosmetic composition of the second embodiment described above is itself in a water-in-oil emulsified state, whereas the hair cosmetic composition of the third embodiment is not limited in the emulsified state of the hair cosmetic composition itself. That is, the hair cosmetic composition of the third embodiment may be W / O type (water-in-oil type) or O / W type (oil-in-water type). Details of each emulsified state are the same as those explained in the hair cosmetic composition of the first embodiment and the hair cosmetic composition of the second embodiment.

[0109] Furthermore, the hair composition in a water-in-oil type emulsified state includes, without limitation, any composition that is in a water-in-oil type emulsified state and is applied to hair. Specific examples include (1) the hair cosmetic of the first embodiment described above, (2) a hair composition that is the same as the hair cosmetic of the first embodiment except that it does not contain a nonionic surfactant, and (3) the first agent in an agent such as an oxidative hair dye, bleach, decolorizing agent, or decolorizing and decolorizing agent that is in a W / O type (water-in-oil type) emulsified state.

[0110] For the nonionic surfactant in the hair cosmetic composition of the third embodiment, the explanation of the nonionic surfactant explained in the hair cosmetic composition of the first embodiment and the second embodiment is similarly applied. The content ratio of the nonionic surfactant contained in the hair cosmetic composition of the third embodiment is not limited, but when the entire hair cosmetic composition of the third embodiment is taken as 100 mass%, the lower limit can be 0.1 mass%, further 1 mass%, and further 2.5 mass%. On the other hand, the upper limit can be 15 mass%, further 10 mass%, and further 5 mass%. The above upper and lower limits can be combined. That is, for example, it can be 0.1 to 15 mass%, further 1 to 10 mass%, and further 2.5 to 5 mass%.

[0111] As described later, the surfactant may be a cationic surfactant, an anionic surfactant, or an amphoteric surfactant in addition to the nonionic surfactant described above. The hair cosmetic composition of the second embodiment may contain such surfactants other than the nonionic surfactant together with the nonionic surfactant.

[0112] The hair cosmetic of the third aspect may contain other components in addition to the nonionic surfactant, as in the hair cosmetic of the first and second aspects. Examples of other components include ester oils, oily components other than ester oils, polymeric compounds, oxidizing agents, stabilizers, pH adjusters, preservatives, antioxidants, 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, plant extracts, herbal extracts, vitamins, pigments, fragrances, ultraviolet absorbers, and at least one component selected from those listed in the "Standards for Quasi-Drug Raw Materials" (revised in March 2021, Yakuji Nipposha). The options and content ratios of these components are the same as those explained in the hair cosmetic compositions of the first and second embodiments, and each option may be used alone or in combination of two or more types.

[0113] Specifically, the hair cosmetic composition of the third aspect can be suitably used as a shampoo, rinse, treatment, conditioner, cleansing agent, etc. In particular, the hair cosmetic composition of the third aspect is a hair cosmetic composition used on hair to which an agent such as an oxidative hair dye, a bleach, a dye removing agent, or a bleaching and dye removing agent has been applied, in which at least one of the first agent and the second agent is a hair composition that is in a water-in-oil emulsion state, and is preferably a shampoo, rinse, treatment, conditioner, or cleansing agent, and particularly preferably a shampoo from the viewpoint of ease of rinsing. The formulation of the hair cosmetic composition of the third aspect (formulation at 25°C) is not limited and can be appropriately selected depending on the application and purpose, and can be, for example, a cream, emulsion (milky liquid), dispersion, paste, foam, liquid, aqueous solution, gel, solid, etc.

[0114] When the hair cosmetic composition of the third embodiment is liquid, its viscosity is not limited, but the lower limit can be 50 mPa·s, 100 mPa·s, or 1000 mPa·s. On the other hand, the upper limit can be 250,000 mPa·s, 225,000 mPa·s, or 200,000 mPa·s. The upper and lower limits can be combined. That is, for example, it can be 500 to 250,000 mPa·s, 1,000 to 225,000 mPa·s, or 10,000 to 200,000 mPa·s. The above-mentioned viscosity is measured at 25°C using a B-type viscometer. The packaging material for containing the hair cosmetic composition of the third embodiment is not limited, and may be a tube-shaped packaging material, a pump-type packaging material, a bottle-type packaging material, a double-can-type packaging material, an aerosol-type packaging material, a non-aerosol-type packaging material, a squeeze foamer-type packaging material, an applicator, a pouch, or the like.

[0115] The hair cosmetic of the third embodiment may be applied to hair in any manner. For example, the hair cosmetic of the third embodiment may be applied to hair using a tool, but usually, the user's hands may be used to apply the hair cosmetic. Furthermore, the hair cosmetic may be applied by an operation such as dipping, coating, or penetration. These may be used alone or in combination of two or more. Furthermore, the hair cosmetic of the third embodiment may be applied to hair wet with water or hot water, or may be applied to dry hair, or may be applied to hair to which a composition for hair cosmetics in a W / O type emulsion state or utilizing a W / O type emulsion state has been applied. Specifically, the hair cosmetic may be applied to hair that has been applied with a composition for hair cosmetics in a W / O type emulsion state or utilizing a W / O type emulsion state and then rinsed with hot water.

[0116] The hair to which the hair cosmetic composition of the third embodiment is applied includes, for example, hair on the head, beard, eyebrows, body hair, etc. There is no limitation on the type of biological hair to which the composition can be applied, but the composition can be suitably applied to human hair.

[0117] [3] Hair cosmetics As described above, the hair composition in a W / O type emulsified state can be the second agent in an oxidative hair dye, bleach, decolorizing agent, decolorizing agent, etc. In this case, the first agent can similarly contain at least one component selected from the above-mentioned oily components, polymer compounds, pH adjusters, stabilizers, preservatives, antioxidants, 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, plant extracts, herbal extracts, vitamins, pigments, fragrances, ultraviolet absorbers, and those listed in the "Standards for Quasi-Drug Raw Materials" (revised in March 2021, Yakuji Nipposha). These may be used alone or in combination of two or more types.

[0118] In addition, the first agent may contain an alkali agent, a dye, a solubilizing agent, a surfactant, etc. These may be used alone or in combination of two or more kinds. Among the above, the alkaline agent is a component that exhibits alkalinity in a water-soluble state. This alkaline agent can decompose or alter colored components such as melanin and dyes by coexisting with an oxidizing agent, thereby lightening or decolorizing the visible color. That is, regardless of whether or not the hair is dyed, the hair can be bleached by decomposing or altering the melanin contained in the hair, and the dye can be bleached by decomposing or altering the dye applied to the dyed hair. In addition, the alkaline agent alone has the effect of swelling the hair, or has a hair swelling promoting effect that promotes this effect. Therefore, it is a component that can promote the above-mentioned effects inside the hair.

[0119] The alkaline agent includes organic bases, inorganic bases and salts thereof. Among these, the organic base includes organic amines, basic amino acids (arginine, lysine and their salts, etc.), guanidine and its salts (guanidine carbonate, etc.), etc. Specific examples include alkanolamines such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, aminomethylpropanol (2-amino-2-methyl-1-propanol, etc.), aminomethylpropanediol (2-amino-2-methyl-1,3-propanediol, etc.), monoethylamine, isopropylamine and other alkylamines. These organic bases may be used alone or in combination of two or more.

[0120] Examples of inorganic bases include hydroxides, chlorides, silicates, carbonates, hydrogencarbonates, metasilicates, phosphates, sulfates, ammonia, etc. Specific examples include alkali metal hydroxides such as sodium hydroxide, alkali metal carbonates such as sodium carbonate, alkali metal hydrogencarbonates such as sodium hydrogencarbonate, alkaline earth metal hydroxides such as magnesium hydroxide and calcium hydroxide, alkaline earth metal carbonates such as magnesium carbonate and calcium carbonate, and ammonium salts such as ammonium carbonate and ammonium hydrogencarbonate. These inorganic bases may be used alone or in combination of two or more.

[0121] The content of the alkaline agent in the first agent is not limited, but it is sufficient that the pH of the hair composition exceeds 7, and it is preferably formulated to be 8 or more, and more preferably formulated to be 9 or more. By formulating it to exceed pH 7, the bleaching action, hair swelling action, hair swelling promotion action, etc. associated with the inclusion of the alkaline agent can be effectively obtained. On the other hand, the upper limit of the pH is not limited, but it is usually formulated to be 13.5 or less, preferably to be 13 or less, and more preferably to be 12 or less. These upper and lower limit values ​​can be arbitrarily combined. For example, the pH can be more than 7 and 13.5 or less, further 8 to 13, and further 9 to 12. The pH of the hair cosmetic agent is the pH after mixing the first agent and the second agent, and is the pH at 25°C.

[0122] The content ratio of the alkaline agent in the first agent is not limited, and the lower limit can be 0.1 mass%, 0.5 mass%, or 3 mass% based on 100 mass% of the entire first agent. On the other hand, the upper limit can be 10 mass%, 15 mass%, or 17 mass%. The above upper and lower limits can be combined. That is, for example, it can be 0.1 to 10 mass%, 0.5 to 15 mass%, or 3 to 17 mass%.

[0123] The dye is a component that contributes to hair dyeing, and any dye known in the art can be used. Specifically, examples include oxidation dyes and direct dyes. These can be used alone or in combination of two or more. Among the above, the oxidation dye is composed of at least a dye intermediate among a dye intermediate and a coupler. The dye intermediate is a component that develops color by oxidative polymerization in the presence of an oxidizing agent. On the other hand, the coupler is a component that develops color by oxidative polymerization together with the dye intermediate in the presence of an oxidizing agent, and can produce a color that cannot be obtained from an oxidative polymer of only the dye intermediate.

[0124] Examples of dye intermediates include p-phenylenediamine, toluene-2,5-diamine (p-toluenediamine), 2,2'-[(4-aminophenyl)imino]bisethanol, N-phenyl-p-phenylenediamine, 4,4'-diaminodiphenylamine, 2-hydroxyethyl-p-phenylenediamine, N,N-bis(2-hydroxyethyl)-p-phenylenediamine, o-chloro-p-phenylenediamine, 4-amino-m-cresol, 2-amino-4-hydroxyethylaminoanisole, 2,4-diaminophenol, 1,2,4-trihydroxybenzene, o-aminophenol, p-aminophenol, and p-methylaminophenol. Furthermore, the dye intermediates include salts of the above-mentioned various compounds. The salts include acid addition salts. Examples of acid addition salts include addition salts of inorganic acids such as hydrochlorides and sulfates, and addition salts of organic acids such as acetates. These dye intermediates and their salts may be used alone or in combination of two or more.

[0125] Examples of couplers include 2,4-diaminophenoxyethanol, α-naphthol, 2,6-diaminopyridine, 5-amino-o-cresol, 5-(2-hydroxyethylamino)-2-methylphenol, resorcin, catechol, pyrogallol, phloroglucin, gallic acid, hydroquinone, m-phenylenediamine, toluene-3,4-diamine, diphenylamine, 3,3'-iminodiphenyl, 1,5-dihydroxynaphthalene, tannic acid, o-aminophenol, m-aminophenol, p-aminophenol, and p-methylaminophenol. Furthermore, the coupler includes salts of the above-mentioned various compounds. The salts include acid addition salts. Examples of acid addition salts include addition salts of inorganic acids such as hydrochlorides and sulfates, and addition salts of organic acids such as acetates. These couplers and their salts may be used alone or in combination of two or more.

[0126] Among the above, o-aminophenol, p-aminophenol, and p-methylaminophenol can be used as both a dye intermediate and a coupler, but for example, when these compounds are used as dye intermediates, the compounds exemplified as the above couplers other than these compounds can be used in combination as couplers.Similarly, when these compounds are used as couplers, the compounds exemplified as the above dye intermediates other than these compounds can be used in combination as dye intermediates.

[0127] Among the above, examples of the direct dyes include ionic direct dyes and nonionic direct dyes. These may be used alone or in combination of two or more. Among these, examples of the ionic direct dyes include acid dyes and basic dyes. These may be used alone or in combination of two or more. Furthermore, examples of the nonionic direct dyes include HC dyes and disperse dyes. These may be used alone or in combination of two or more.

[0128] 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.

[0129] Examples of the basic dye include a basic red dye, a basic orange dye, a basic yellow dye, a basic green dye, a basic blue dye, a basic purple dye, a basic brown dye, etc. These may be used alone or in combination of two or more kinds. Among the above, examples of the basic red dye include basic red 1, basic red 2, basic red 22, basic red 46, basic red 51, basic red 76, and basic red 118. Examples of the basic orange dye include basic orange 1, basic orange 2, and basic orange 31. Examples of the basic yellow dye include basic yellow 11, basic yellow 28, basic yellow 40, basic yellow 57, and basic yellow 87. Examples of the basic green dye include basic green 1 and basic green 4. Examples of the basic blue dye include basic blue 3, basic blue 6, basic blue 7, basic blue 9, basic blue 26, basic blue 41, basic blue 47, basic blue 75, basic blue 77, basic blue 99, and basic blue 124. Examples of basic purple dyes include basic purple 1, basic purple 2, basic purple 3, basic purple 4, basic purple 14, and basic purple 16. Examples of basic brown dyes include basic brown 4, basic brown 16, and basic brown 17. These dyes may be used alone or in combination of two or more.

[0130] Examples of the HC dye include HC red dye, HC orange dye, HC yellow dye, HC blue dye, HC purple dye, etc. These may be used alone or in combination of two or more kinds. Among the above, examples of the HC red dyes include HC red 1, HC red 3, HC red 7, HC red 10, HC red 11, HC red 13, HC red 14, HC red 17, HC red 18, HC red 19, HC red 20, and HC red 21. Examples of the HC orange dyes include HC orange 1, HC orange 2, HC orange 3, HC orange 6, and HC orange 7. Examples of the HC yellow dyes include HC yellow 2, HC yellow 4, HC yellow 5, HC yellow 7, HC yellow 9, HC yellow 11, HC yellow 13, HC yellow 16, HC yellow 18, HC yellow 6, HC yellow 10, HC yellow 12, HC yellow 14, HC yellow 15, and HC yellow 19. Examples of the HC blue dyes include HC blue 2, HC blue 5, HC blue 6, HC blue 8, HC blue 9, HC blue 10, HC blue 11, HC blue 12, HC blue 13, HC blue 14, HC blue 15, HC blue 16, HC blue 18, HC blue 19, and HC blue 20. Examples of the HC purple dyes include HC purple 1, HC purple 2, HC purple 3, and HC purple 4. These may be used alone or in combination of two or more.

[0131] 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.

[0132] Other examples include nitro dyes such as 4-nitro-o-phenylenediamine, 2-nitro-p-phenylenediamine, 2-amino-4-nitrophenol, 2-amino-5-nitrophenol, picramic acid, picric acid, and salts thereof, carotenoid dyes, anthraquinone dyes, flavonoid dyes (anthocyanin dyes, chalcone dyes, flavone dyes), polyphenine dyes, diketone dyes, betacyanin dyes, and azophyllon dyes. Specifically, natural dyes such as madder pigment, extracted carotene, cochineal pigment, lac pigment, red cabbage pigment, perilla pigment, purple corn pigment, elderberry pigment, boysenberry pigment, grape skin pigment, grape juice pigment, purple potato pigment, safflower yellow pigment, safflower red pigment, sorghum pigment, onion pigment, cacao pigment, sandalwood pigment, spirulina blue pigment, fluorophyll, bee red, red yeast rice pigment, indigo, gardenia pigment, turmeric pigment, annatto pigment, copper chlorophyllin sodium, paprika pigment, lac pigment, henna, rutin, safflower red, etc. These may be used alone or in combination of two or more kinds.

[0133] The dye content is not limited, but when the entire first agent is taken as 100% by mass, the lower limit is preferably 0.001% by mass. By making it 0.001% by mass or more, the hair dyeing effect can be effectively obtained and the color can be improved. Furthermore, the lower limit can be 0.1% by mass, and furthermore, 0.5% by mass. On the other hand, the upper limit can be 15% by mass, 10% by mass, or 6% by mass. These upper and lower limit values ​​can be arbitrarily combined. For example, it can be 0.001 to 15% by mass, 0.1 to 10% by mass, or 0.5 to 6% by mass.

[0134] The solubilizer is a component that contributes to solubilizing each component contained in the first agent. Examples of the solubilizer include water, alcohols, and the like. These may be used alone or in combination of two or more. The use of water is preferred from the viewpoint of exhibiting excellent solubility. Furthermore, the use of water in combination with alcohols is more preferred.

[0135] Examples of the alcohols include monohydric alcohols, polyhydric alcohols, ether alcohols, etc. These may be used alone or in combination of two or more kinds.

[0136] Of the monohydric alcohols, the monohydric lower alcohol preferably has 5 or less carbon atoms, and examples thereof include ethanol, n-propanol, isopropanol, etc. These may be used alone or in combination of two or more kinds. Among the monohydric alcohols, examples of the monohydric aromatic alcohol include benzyl alcohol, 2-phenylethyl alcohol, cinnamyl alcohol, phenylpropanol, 1-phenoxy-2-propanol, phenyl glycol, α-methylbenzyl alcohol, dimethylbenzyl carbinol, benzyloxyethanol, phenoxyethanol, phenoxyisopropanol, p-anisyl alcohol, etc. These may be used alone or in combination of two or more. Furthermore, as the ether alcohol which is a monohydric alcohol and has an ether bond, an ether alcohol having a total of three or more hydroxy groups and ether bonds is preferable, and specific examples thereof include ethoxydiglycol (diethylene glycol monoethyl ether), methoxydiglycol (diethylene glycol monomethyl ether), diethylene glycol monobutyl ether, etc.

[0137] Among the above, the monohydric alcohol is preferably an ether alcohol, more preferably an ether alcohol having a total of three or more hydroxy groups and ether bonds, further preferably ethoxydiglycol and / or methoxydiglycol, and particularly preferably ethoxydiglycol.

[0138] The valence of the polyhydric alcohol is not limited and may be 6 or more, but from the viewpoint of improving the solubility or dispersibility in the dye component, a valence of 2 to 5 is preferable. Furthermore, the carbon number of the polyhydric alcohol is not limited and, if it is a hydrocarbon group, may be 6 or more, but from the viewpoint of improving the solubility or dispersibility in the dye component, a carbon number of 2 to 5 is preferable. Specifically, alkanediols such as ethanediol, propanediol, butanediol, and pentanediol; oxydialkanols such as oxydiethanol and oxydipropanol; ethanediols such as ethylene glycol; propanediols such as propane-1,2-diol and trimethylene glycol; butanediols such as 1,2-butanediol, 1,3-butanediol, and 1,4-butanediol; pentanediols such as isopentyldiol, 1,5-pentanediol, and 1,2-pentanediol; alkanetriols such as glycerin, butanetriol (1,2,3-butanetriol, 1,2,4-butanetriol, etc.), and pentanetriol (1,2,3-pentanetriol, 1,2,5-pentanetriol, 2,3,4-pentanetriol, etc.). These may be used alone or in combination of two or more.

[0139] Furthermore, examples of ether alcohols that are polyhydric alcohols and have an ether bond include polyalkylene glycols. Examples of polyalkylene glycols include polyethylene glycols. The average molecular weight (number average molecular weight) of polyethylene glycol is not limited, but is usually 100 to 5000, preferably 100 to 2500, and more preferably 100 to 2000.

[0140] Among these, from the viewpoint of improving the solubility or dispersibility of the dye, glycerin, 1,3-butylene glycol, propylene glycol, and polyethylene glycol are preferred, and glycerin and polyethylene glycol are more preferred, and glycerin is the most preferred. By using these, it is possible to obtain the effect of suppressing the precipitation of the dye and the effect of improving the hair dyeing power. Furthermore, it is possible to improve the smoothness of the hair cosmetic agent (smoothness of the agent). This can improve the ease of application of the hair cosmetic agent to hair. That is, it is possible to improve the applicability.

[0141] The surfactant may be a cationic surfactant, an anionic surfactant, an amphoteric surfactant, or a nonionic surfactant. These may be used alone or in combination of two or more. The surfactant may be blended for the purpose of stably incorporating dyes, oily components, etc., into the first agent and further into the hair cosmetic agent. Among the above, the type of the nonionic surfactant is the same as the nonionic surfactant in the hair cosmetic composition of the first embodiment.

[0142] 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, etc. These may be used alone or in combination of two or more.

[0143] Among these, alkyl quaternary ammonium salts are preferred, and more preferably, monoalkyl-type quaternary ammonium salts and / or dialkyl-type quaternary ammonium salts are more preferred, and more preferably, monoalkyl-type quaternary ammonium salts.

[0144] Monoalkyl quaternary ammonium salts include behenyltrimethylammonium chloride (behentrimonium chloride), lauryltrimethylammonium chloride, lauryltrimethylammonium bromide, alkyl(16,18)trimethylammonium chloride, cetyltrimethylammonium chloride (cetrimonium chloride), cetyltrimethylammonium bromide, cetyltrimethylammonium saccharin, stearyltrimethylammonium chloride (steartrimonium chloride), stearyltrimethylammonium bromide, cetyltrimethylammonium saccharin, stearyltrimethylammonium saccharin, distearate chloride, Examples of such compounds include allyl dimethyl ammonium (distearyldimonium chloride), alkyl (28) trimethyl ammonium chloride, diPOE (2) oleyl methyl ammonium chloride, diPOE stearyl methyl ammonium chloride, POE (1) POP (25) diethyl methyl ammonium chloride, POP methyl diethyl ammonium chloride, methacryloyloxyethyl trimethyl ammonium chloride, dicocoyl dimethyl ammonium chloride, lanolin fatty acid aminopropyl ethyl dimethyl ammonium ethyl sulfate, behenyl trimethyl ammonium methyl sulfate, hydroxyethyl cellulose dimethyl diallyl ammonium chloride, etc. These compounds may be used alone or in combination of two or more.

[0145] Examples of anionic surfactants include alkyl ether sulfates, POE alkyl ether sulfates, alkyl sulfates, alkenyl ether sulfates, alkenyl sulfates, olefin sulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfonic acid salts, N-acylamino acid surfactants, phosphoric acid mono- or diester surfactants, and sulfosuccinic acid esters. These may be used alone or in combination of two or more. Examples of counter ions of the anionic groups of these surfactants include sodium ions, potassium ions, and triethanolamine. These may be used alone or in combination of two or more.

[0146] That is, for example, disodium lauryl sulfosuccinate, sodium lauryl sulfate, sodium myristyl sulfate, potassium lauryl sulfate, ammonium lauryl sulfate, triethanolamine lauryl sulfate, sodium cetyl sulfate, sodium stearyl sulfate, sodium POE lauryl ether sulfate, triethanolamine POE lauryl ether sulfate, ammonium POE lauryl ether sulfate, sodium POE stearyl ether sulfate, disodium lauryl sulfosuccinate, sodium stearoyl methyl taurine, triethanolamine dodecylbenzenesulfonate, sodium tetradecenesulfonate, sodium lauryl phosphate, POE lauryl ether phosphoric acid and its salts, N-lauroyl glutamate salts (sodium lauroyl glutamate, etc.), N-lauroyl methyl-β-alanine salts, N-acyl glycine salts, N-acyl glutamate salts, higher fatty acids such as lauric acid, myristic acid, and salts of these higher fatty acids. These may be used alone or in combination of two or more.

[0147] 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'-caprylamide gel, and the like. glycine-type amphoteric surfactants such as sodium laurylaminopropionate, sodium laurylaminodipropionate, and triethanolamine laurylaminopropionate; and the like. These may be used alone or in combination of two or more.

[0148] Examples of the betaine type amphoteric surfactant include aminoacetic acid betaine type amphoteric surfactants such as coconut oil alkyl betaine, lauryl dimethyl amino acetate betaine, myristyl dimethyl amino acetate betaine, stearyl dimethyl amino acetate 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.

[0149] When the first agent contains a surfactant, the content ratio of the surfactant in the entire first agent (100% by mass) is not limited, but the lower limit can be 0.01% by mass, further 0.05% by mass, and further 0.1% by mass. The upper limit can be 15% by mass, further 10% by mass, and further 5% by mass. The above upper and lower limits can be combined. That is, for example, it can be 0.01 to 15% by mass, further 0.05 to 10% by mass, and further 0.1 to 5% by mass.

[0150] The first agent is usually used by mixing with the second agent (i.e., for example, the hair cosmetic composition of the first embodiment described above). This mixing may be done before application to the hair, or may be applied separately in sequence. That is, for example, the first agent and the second agent may be mixed on the hair. In addition, when applying, the composition may be applied to the hair using a tool such as a comb, brush, or spatula. Furthermore, it may be applied to the hair using the user's hands. Furthermore, it may be applied by operations such as impregnation (dipping), coating, and penetration. These may be used alone or in combination of two or more. Among these, application by a comb is particularly preferred from the viewpoint of ease of application. In addition, there is a general concern that if a hair cosmetic adheres to a comb, it is difficult to wash off, but the hair cosmetic composition of the present invention can eliminate this concern. Furthermore, the composition may be applied to hair wet with water or warm water, or may be applied to dry hair. EXAMPLES

[0151] The present invention will be described in more detail below with reference to examples. However, these examples are merely illustrative and are not intended to limit the present invention in any way.

[0152] [1] Preparation of hair cosmetic composition The hair cosmetic compositions of Examples 1 to 12 and Comparative Example 1 (corresponding to the hair cosmetic composition in the first embodiment of the hair cosmetic and the second agent in the oxidative hair dye) were prepared by mixing the components shown in Tables 1 to 2 in the mass ratios shown in Tables 1 to 2. Furthermore, the components shown in Table 3 were mixed in the mass ratios shown in Table 3 to prepare hair cosmetics of Examples 13 to 17 and Comparative Example 2 (third embodiment hair cosmetics, corresponding to shampoos).

[0153] [Table 1]

[0154] [Table 2]

[0155] [Table 3]

[0156] [2] Evaluation of the first embodiment of the hair cosmetic product (oxidative hair dye type) <1> Evaluation of wash-off performance A hair cosmetic composition (corresponding to the first agent of an oxidation hair dye) was prepared by mixing the components shown in Table 4 below in the mass ratios shown in Table 4. Then, each of the hair cosmetic compositions of Examples 1 to 12 and Comparative Example 1 shown in Tables 1 to 2 was mixed with the hair cosmetic composition shown in Table 4 in a mass ratio of 1:1 to obtain a mixture (hair cosmetic). The obtained mixture was applied to a wig (manufactured by Staffs Co., Ltd.) using a comb. After 15 minutes had passed since application, the mixture was washed off the wig with hot water at 40°C for 30 seconds. After rinsing, the wig was visually inspected and tactilely checked to evaluate the presence and degree of stickiness and greasiness due to residual hair cosmetics. The evaluation was performed by five expert panelists, who selected the score that was closest to their perception in light of the following evaluation criteria (1), and the arithmetic mean of the scores selected by the five expert panelists was calculated.

[0157] [Evaluation Criteria (1)] 5: There is no stickiness or greasiness due to the hair cosmetic, and the hair cosmetic is washed away (Excellent) 4: There is almost no stickiness or stickiness due to the hair cosmetic, and the hair cosmetic is washed off (good) 3: There is some stickiness or greasiness due to hair cosmetics, but the hair cosmetics are washed off (acceptable) 2: Stickiness or greasiness due to hair cosmetics is present, and some hair cosmetics remain unwashed (slightly poor) 1: There is a considerable stickiness or greasiness due to the hair cosmetic, and a considerable amount of the hair cosmetic remains unwashed (poor)

[0158] The arithmetic mean values ​​obtained above were compared with the following criteria (2), and the corresponding scores were shown in Tables 1 to 2. [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)

[0159] [Table 4]

[0160] <2> Evaluation of formulation stability Each of the hair cosmetic compositions of Examples 1 to 12 and Comparative Example 1 shown in Tables 1 to 2 was weighed out in an amount of 20 grams each into a No. 4 standard bottle, and each bottle was sealed with an inner stopper and a lid. After that, all the bottles were left to stand in a thermostatic chamber at 50°C for one month, and then removed from the thermostatic chamber, and the state of the hair cosmetic composition contained in the bottle was visually confirmed. The evaluation was performed by five expert panelists, and the evaluation score closest to the recognition of each expert panelist was selected in accordance with the following evaluation criterion (3), and the arithmetic mean value of the evaluation scores selected by the five expert panelists was calculated. Furthermore, the obtained arithmetic mean value was compared with the above-mentioned evaluation criterion (2), and the corresponding evaluation scores are shown in Tables 1 to 2.

[0161] [Evaluation criteria (3)] 5: No separation at all (Excellent) 4: Almost no separation (good) 3: Some separation is observed (OK) 2: Separation is somewhat common (slightly poor) 1: Many separations observed (bad)

[0162] <3> Evaluation of the gloss of hair cosmetic compositions The gloss of the hair cosmetic composition was evaluated for each of the hair cosmetic compositions of Examples 1 to 12 and Comparative Example 1 (corresponding to the second agent of the oxidative hair dye) prepared in [1] above. The evaluation was performed by five expert panelists who visually judged the gloss of the appearance of the hair cosmetic composition under a standard light source. The evaluation was performed by selecting the score that was closest to the recognition of each expert panelist in the following evaluation criterion (4), and calculating the arithmetic mean of the scores selected by the five expert panelists. Furthermore, the obtained arithmetic mean was compared with the following evaluation criterion (5), and the corresponding scores are shown in Tables 1 to 2.

[0163] [Evaluation criteria (4)] 5: Very high gloss (excellent) 4: High gloss (good) 3: Slightly glossy (OK) 2: Slightly less glossy (slightly poor) 1: Low gloss (bad)

[0164] [Evaluation criteria (5)] 5: Arithmetic mean value is 4.6 points or more (excellent) 4: Arithmetic mean value is 3.6 points or more and less than 4.6 points (good) 3: Arithmetic mean value is 2.6 points or more and less than 3.6 points (acceptable) 2: Arithmetic mean value is 1.6 points or more and less than 2.6 points (slightly poor) 1: Arithmetic mean value is less than 1.6 points (poor)

[0165] [2] Evaluation of hair cosmetics (shampoo type) <1> Evaluation of wash-off performance A hair cosmetic composition (corresponding to the first agent of the oxidative hair dye) was prepared by mixing the components shown in Table 4 in the mass ratios shown in Table 4. Furthermore, a hair cosmetic composition (corresponding to the second agent of the oxidative hair dye) was prepared by mixing the components shown in Table 5 below in the mass ratios shown in Table 5. These were mixed in a mass ratio of 1:1 to obtain a mixture. 80 g of the obtained mixture was applied to a wig (manufactured by Staff Co., Ltd.) using a comb. After 15 minutes had passed since application, the wig was washed with water, and then a hair cosmetic (shampoo type) shown in Table 3 was applied to wash the mixture off from the wig. The wash-off performance at this time was evaluated according to the above-mentioned [Evaluation Criteria (1)] and [Evaluation Criteria (2)], and the obtained scores are shown in Table 3.

[0166] [Table 5]

[0167] <2> Evaluation of foaming ability The amount of foaming when applying the hair cosmetic (shampoo type) was evaluated when evaluating the above-mentioned rinsing performance in (1). The evaluation was performed by five expert panelists, who selected the score that most closely matched their perception in light of the following evaluation criterion (6), and calculated the arithmetic mean of the scores selected by the five expert panelists. Furthermore, the obtained arithmetic mean was compared with the above-mentioned evaluation criterion (5), and the corresponding scores are shown in Table 3.

[0168] [Evaluation criteria (6)] 5: Amount of foam is quite large (excellent) 4: High foaming rate (good) 3: Amount of foam is somewhat high (OK) 2: The amount of foam is slightly low (slightly poor) 1: Low foaming amount (bad)

[0169] [3] Effects of the embodiment Comparing Example 1 and Examples 10 to 12 with Comparative Example 1, it can be seen that in the hair cosmetic composition in a W / O type emulsion state, the rinsing performance when no nonionic surfactant was included was "2" (Comparative Example 1), whereas the rinsing performance when a nonionic surfactant was included was "5" (Example 1, Examples 10 to 12), and that the use of a nonionic surfactant dramatically improves the rinsing performance. Furthermore, since the rinsing performance in Example 6 was "3" (Example 6), whereas the rinsing performance in Example 7 was "4" (Example 7), and the rinsing performance in Example 1 was "5" (Example 1), it can be seen that in the hair cosmetic composition in a W / O type emulsion state, it is preferable from the viewpoint of formulation stability to include a nonionic surfactant in an amount of more than 0.05% by mass. Furthermore, since the formulation stability in Example 9 was "3" (Example 9) while the formulation stability in Example 1 was "4" (Example 1), it can be seen that from the viewpoint of formulation stability, it is preferable for the hair cosmetic composition in a W / O type emulsion state to contain less than 6 mass% of a nonionic surfactant.

[0170] Furthermore, a comparison of Examples 1, 10, and 11 with Example 12 shows that in a W / O type emulsified hair cosmetic composition, when a POE alkyl ether is used as the nonionic surfactant, the gloss of the appearance of the hair cosmetic composition itself is "3" (Example 12), whereas when a nonionic surfactant other than POE alkyl ether is used, the gloss of the appearance of the hair cosmetic composition itself is "5" (Examples 1, 10, and 11), indicating that the use of a nonionic surfactant other than POE alkyl ether improves the gloss of the appearance of the hair cosmetic composition itself. Furthermore, a comparison of Examples 1 and 6 shows that in a W / O type emulsified hair cosmetic composition, when no ester oil is included, the rinsing performance is "3" (Example 6), whereas when an ester oil is included, the rinsing performance is "5" (Example 1), indicating that the use of ester oil improves the rinsing performance.

[0171] Incidentally, the present invention is not limited to the above-mentioned specific embodiments, and various modifications can be made within the scope of the present invention depending on the purpose and application.

Claims

1. A multi-component hair cosmetic composition comprising a plurality of separate hair cosmetic compositions, A hair cosmetic composition, characterized in that at least one of the hair cosmetic compositions is in a water-in-oil type emulsion state and contains (A) a nonionic surfactant.

2. A hair cosmetic composition in a water-in-oil emulsion state, A hair cosmetic composition comprising (A) a nonionic surfactant.

3. A hair cosmetic to be used on hair to which a hair cosmetic composition forming a water-in-oil emulsified state has been applied, and / or on hair to which a mixture of a hair cosmetic composition forming a water-in-oil emulsified state and a hair cosmetic composition forming an oil-in-water emulsified state has been applied, comprising: A hair cosmetic composition comprising (A) a nonionic surfactant.

4. 4. The hair cosmetic composition according to claim 1, wherein the nonionic surfactant (A) is a nonionic surfactant other than polyoxyethylene alkyl ether.

5. 3. The hair cosmetic composition according to claim 1, wherein the content of the nonionic surfactant (A) during use is 0.025 to 5% by mass.

6. 4. The hair cosmetic composition according to claim 3, which is a shampoo, a rinse, a treatment, a conditioner or a cleansing agent.

7. The hair cosmetic according to claim 3, wherein the content of the nonionic surfactant is 0.1 to 10% by mass, based on 100% by mass of the entire hair cosmetic.

8. The hair cosmetic composition according to claim 1 , wherein at least one of the hair cosmetic compositions comprises an ester oil (B).

9. 3. The hair cosmetic composition according to claim 1, which is applied using a comb.

10. A multi-component hair cosmetic composition comprising a plurality of separate hair cosmetic compositions; The hair cosmetic composition according to claim 3, A hair cosmetic kit, characterized in that at least one of the hair cosmetic compositions is in a water-in-oil type emulsion state.

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