JP2022117214A - Oxidizing agent-containing composition - Google Patents

Abstract

To provide an oxidizing agent-containing composition comprising a large amount of an oily component, with which mixing properties by way of shaking can be improved while maintaining emulsification stability.SOLUTION: The oxidizing agent-containing composition of the present invention comprises: (a) 4 mass% or more of an oily component that is in liquid form at 25°C, (b) an anionic surfactant, (c) glycerin fatty acid ester, and (d) an oxidizing agent. The oxidizing agent-containing composition has a viscosity of 100 mPa s or more and 8000 mPa s or less at 25°C, which can be used as a hair bleaching/decoloring agent or hair dye by mixing with other agents by way of shaking.SELECTED DRAWING: None

Description

TECHNICAL FIELD The present invention relates to an oxidizing agent-containing composition which is used as a hair bleaching/decoloring agent or hair dye by being mixed with other agents by shaking.

In general, hair treatment agents are known that exhibit effects by mixing a plurality of agents. Examples of such hair treatment agents include hair bleaching/decoloring agents or hair dyes composed of a first agent containing an alkaline agent and a second agent containing an oxidizing agent such as hydrogen peroxide. Are known. Oxidizing agents bleach the melanin in the hair. Alkaline agents improve the brightness of hair after bleaching by promoting the action of oxidizing agents. In addition, when the hair treatment agent contains a dye, the alkaline agent swells the hair to improve the penetration of the dye into the hair, thereby improving dyeability.

Conventionally, techniques for improving hair dyeing performance or brightness by blending a large amount of an oily component are known. Patent Document 1 discloses a second agent as an oxidizing agent-containing composition containing 10% by mass of an oily component such as liquid paraffin, a nonionic surfactant having a predetermined HLB, a higher alcohol, and the like. In Patent Document 1, a nonionic surfactant having a predetermined HLB, a higher alcohol, and the like improve the formulation stability of the second agent and the mixability with the first agent using a brush.

JP 2019-11291 A

However, since the oxidizing agent-containing composition of Patent Document 1 contains a large amount of oily components, it has a relatively high viscosity, and when mixed with the first agent, which is a separate agent, by a shaking method, there is a problem that the mixing is inferior. there were. On the other hand, when the viscosity is lowered, there is a problem of poor emulsification stability.

The present invention provides an oxidizing agent-containing composition containing a large amount of an oily component by blending an anionic surfactant and a glycerin fatty acid ester and regulating the viscosity within a predetermined range. This is based on the discovery that mixing properties can be improved by the mixing method.

In order to solve the above problems, one aspect of the present invention is an oxidizing agent-containing composition containing the following components (a) to (d) and having a viscosity at 25° C. of 100 mPa·s or more and 8000 mPa·s or less. Accordingly, an oxidizing agent-containing composition is provided which is used as a hair bleaching/decoloring agent or a hair dye by being mixed with other agents by a shaking method.

(a) 4% by mass or more of oily component that is liquid at 25°C (b) anionic surfactant (c) glycerin fatty acid ester (d) oxidizing agent In the oxidizing agent-containing composition, the (c) glycerin fatty acid ester is , a lipophilic monoglycerin fatty acid ester.

(e) polyoxyethylene polyoxypropylene alkyl ethers, polyoxyalkylene polyhydric alcohol fatty acid esters, and polyhydric alcohol fatty acid esters (excluding cases corresponding to the above component (c)), Any one or more of polyoxyalkylene hydroxy fatty acid ethers and polyoxyalkylene sterol ethers may be included.

In the oxidant-containing composition, the (b) anionic surfactant may contain an N-acyl taurine salt.
In the oxidizing agent-containing composition, the other agent is an agent containing an alkaline agent, and the mixing ratio of the agent containing the alkaline agent and the oxidizing agent-containing composition at the time of use is 1:0 as a mass ratio. 0.5 to 3.

ADVANTAGE OF THE INVENTION According to this invention, the mixability by a shaking system can be improved, maintaining emulsification stability in the oxidizing agent containing composition which mixes a high amount of oily components.

An embodiment of the oxidizing agent-containing composition of the present invention will be described below. The oxidizing agent-containing composition is configured, for example, as a multi-component hair bleaching/decoloring agent or hair dye oxidizing agent-containing composition. Specific examples of the multi-component hair bleaching/dedying agent or hair dye include, for example, a two-component hair bleaching/dedying agent or hair dye, and a three-component hair bleaching/dedying agent or hair dye. etc. The oxidizing agent-containing composition is configured as the second part of a two-part hair bleaching/decoloring agent or hair dye, or a three-part hair bleaching/bleaching agent or hair dye.

Hereinafter, the components of the hair bleaching/decoloring agent or hair dye containing the second agent constituted as the oxidizing agent-containing composition are exemplified.
<Two-component hair bleaching and destaining agent>
A two-agent type hair bleaching/destaining agent comprises, for example, a first agent containing at least an alkaline agent and (d) a second agent containing an oxidizing agent and the like.

(Second agent of two-agent hair bleaching/decoloring agent)
The second agent contains (d) an oxidizing agent, (a) an oily component that is liquid at 25°C, (b) an anionic surfactant, (c) glycerin fatty acid ester, and the like.

((d) oxidizing agent)
(d) The oxidizing agent improves the bleaching properties of melanin contained in hair. Specific examples of oxidizing agents include hydrogen peroxide, urea peroxide, melamine peroxide, sodium percarbonate, sodium perborate, potassium perborate, ammonium persulfate, potassium persulfate, sodium persulfate, sodium peroxide, Potassium peroxide, magnesium peroxide, barium peroxide, calcium peroxide, strontium peroxide, sulfate hydrogen peroxide adduct, phosphate hydrogen peroxide adduct, pyrophosphate hydrogen peroxide adduct, etc. mentioned. Among specific examples of these oxidizing agents, only one type may be contained alone, or two or more types may be combined and contained.

The lower limit of the content of the oxidizing agent in the second agent is appropriately set, but is preferably 0.1% by mass or more, more preferably 2.0% by mass or more, and still more preferably 3.0% by mass or more. . When the content of the oxidizing agent is 0.1% by mass or more, the decolorization of melanin can be further improved. In addition, the upper limit of the content of the oxidizing agent in the second agent is appropriately set, but is preferably 15.0% by mass or less, more preferably 9.0% by mass or less, and still more preferably 6.0% by mass or less. is. When the content of the oxidizing agent is 15.0% by mass or less, hair damage and the like can be suppressed. Ranges with any combination of the above upper and lower limits are also envisioned.

When hydrogen peroxide is added as an oxidizing agent to the second agent, the second agent preferably contains a stabilizing agent such as sodium stannate, ethylene glycol phenyl ether (phenoxyethanol ), hydroxyethanediphosphonic acid, or salts thereof. Specific examples of hydroxyethanediphosphonates include tetrasodium hydroxyethanediphosphonate and disodium hydroxyethanediphosphonate.

((a) Liquid oily component at 25°C)
(a) Oily components that are liquid at 25°C are, for example, hydrocarbons that are liquid at 25°C, oils and fats such as animal oils and vegetable oils that are liquid at 25°C, waxes that are liquid at 25°C, higher alcohols that are liquid at 25°C, and alcohols that are liquid at 25°C. higher fatty acids that are liquid at 25°C, esters that are liquid at 25°C, silicones that are liquid at 25°C, and the like.

Specific examples of hydrocarbons that are liquid at 25° C. include α-olefin oligomers, light isoparaffins, light liquid isoparaffins, synthetic squalane, vegetable squalane, squalane, polybutene, liquid isoparaffins, and liquid paraffins. Specific examples of fats such as animal oils and vegetable oils that are liquid at 25°C include olive oil, camellia oil, sasanqua oil, sunflower oil, soybean oil, corn oil, peanut oil, rapeseed oil, rice bran oil, grape seed oil, and macadamia nut oil. , castor oil, coconut oil and the like. Specific examples of waxes that are liquid at 25° C. include jojoba oil and the like. Specific examples of higher alcohols that are liquid at 25° C. include lauryl alcohol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, and 2-hexyldecanol.

Specific examples of higher fatty acids that are liquid at 25° C. include isostearic acid and oleic acid. Specific examples of esters that are liquid at 25° C. include diisopropyl adipate, isostearyl myristate, isotridecyl myristate, isopropyl myristate, octyldodecyl myristate, cetyl octanoate, isononyl isononanoate, isodecyl isononanoate, and isotridecyl isononanoate. , diisopropyl sebacate, isopropyl palmitate, hexyl laurate, decyl oleate, hexyldecyl dimethyloctanoate, octyl palmitate, lauryl lactate, octyldodecyl lactate, isocetyl stearate, isocetyl isostearate, ethylene glycol dioctoate, cetyl caprylate , glyceryl tricaprylate, neopentyl glycol dicaprate, cetyl 2-ethylhexanoate, triglycerides that are liquid at 25°C, and amino acid esters that are liquid at 25°C. Specific examples of triglycerides include glyceryl trioleate, glyceryl tristearate, and glyceryl tripalmitate. Specific examples of amino acid esters include di(cholesteryl-octyldodecyl) N-lauroyl-L-glutamate. Specific examples of silicones that are liquid at 25° C. include, for example, methylpolysiloxanes having a molecular weight of less than 150,000, highly polymerized methylpolysiloxanes, methylphenylpolysiloxanes, and methylcyclopolysiloxanes.

Among specific examples of these oily components, only one type may be contained alone, or two or more types may be combined and contained. (a) The oily component that is liquid at 25° C. is preferably a hydrocarbon, an ester, a silicone, or an oil from the viewpoint of excellent bleaching properties, or in the case of a hair dye described later, from the viewpoint of excellent hair dyeing performance. Especially preferred. Among the hydrocarbons, liquid paraffin, liquid isoparaffin, squalane and α-olefin oligomers are preferred, and liquid paraffin is particularly preferred.

The lower limit of the content of component (a) in the second agent is 4% by mass or more, preferably 6% by mass or more, and more preferably 8% by mass or more. When the content is 4% by mass or more, decolorization is improved. In addition, in the case of the hair dye to be described later, the hair dyeing performance is improved. The upper limit of the content of component (a) in the second agent is set as appropriate, but is preferably 20% by mass or less, more preferably 18% by mass or less, and even more preferably 15% by mass or less. When the content is 20% by mass or less, the emulsion stability is further improved. In addition, it improves the mixability with the first agent. Ranges with any combination of the above upper and lower limits are also envisioned.

((b) anionic surfactant)
(b) Anionic surfactants improve emulsion stability in particular. (b) Specific examples of anionic surfactants include alkyl ether sulfates, alkyl sulfates, alkyl ether sulfates, alkenyl ether sulfates, alkenyl sulfates, olefinsulfonates, alkanesulfonates, saturated or unsaturated fatty acid salts, alkyl or alkenyl ether carboxylates, α-sulfone fatty acid salts, N-acyl amino acid type surfactants, phosphoric acid mono- or diester type surfactants, sulfosuccinate esters, N-acyl taurine salts, and Derivatives thereof and the like are included. Specific examples of counter ions for the anionic groups of these surfactants include sodium ions, potassium ions, triethanolamine, and the like. More specifically, examples of alkyl ether sulfate salts include polyoxyethylene (hereinafter also referred to as “POE”) sodium lauryl ether sulfate. Specific examples of alkyl sulfates include sodium lauryl sulfate, sodium cetyl sulfate, and the like. Specific examples of alkyl sulfate derivatives include POE sodium lauryl sulfate and the like. Specific examples of phosphoric acid mono- or diester surfactants include POE oleyl ether phosphoric acid and the like. Specific examples of sulfosuccinic acid esters include disodium lauryl sulfosuccinate. Specific examples of N-acyl taurine salts include N-alkyloylmethyl taurine salts such as sodium N-stearoyl-N-methyltaurate. Among specific examples of these (b) anionic surfactants, only one type may be contained alone, or two or more types may be combined and contained. Among these, N-acyl taurine salts and alkyl sulfates are preferred, and N-acyl taurine salts are particularly preferred, from the viewpoint of better emulsification stability of the second agent.

The lower limit of the content of component (b) in the second agent is set appropriately, but is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and still more preferably 0.1% by mass or more. is. When the content of component (b) is 0.01% by mass or more, the emulsion stability is further improved. The upper limit of the content of the component (b) in the second agent is set appropriately, but is preferably 5% by mass or less, more preferably 2% by mass or less, and even more preferably 1% by mass or less. When the content of component (b) is 5% by mass or less, the emulsion stability is further improved. Ranges with any combination of the above upper and lower limits are also envisioned.

The upper limit of the mass ratio (b/a) of the content of component (b) to the content of component (a) in the second agent (b/a) is set appropriately, but is preferably 0.5 or less, more preferably 0.5. It is 3 or less, more preferably 0.1 or less, and particularly preferably 0.05 or less. When the mass ratio is 0.5 or less, oily squeakiness is suppressed. The oily feeling is a feeling caused by the coexistence of the component (a), which is highly blended as in the present invention, with the component (b). It refers to a combination of the feel and the squeaky feeling due to the component (b). In the following description, the same applies to the feeling of oily squeak.

((c) glycerin fatty acid ester)
(c) Glycerin fatty acid ester particularly improves emulsion stability. The glycerin may be a monoglycerin fatty acid ester having one structural unit or a polyglycerin fatty acid ester having two or more structural units. Among these, monoglycerol fatty acid esters are preferred from the viewpoint of further improving emulsion stability. In the (c) glycerin fatty acid ester, a lipophilic glycerin fatty acid ester having an HLB value of 6.0 or less is preferable. A lower HLB value, that is, a lipophilic type, further improves emulsion stability.

(c) Specific examples of glycerin fatty acid esters are listed below. In addition, in the present invention, the HLB value employs the value obtained by the actual measurement value described later, but the numerical value described in Nikko Chemicals Co., Ltd. catalog (2017) is described as a reference value. (c) Specific examples of glycerin fatty acid esters include lipophilic glyceryl monooleate (HLB: 2.5), lipophilic glyceryl monostearate (HLB: 4.0), and self-emulsifying glyceryl monostearate. (HLB: 6.0), glyceryl myristate (HLB: 3.5), polyglyceryl monostearate (HLB: 5.0) and the like. (c) Among the specific examples of the glycerin fatty acid ester, only one type may be contained alone, or two or more types may be combined and contained. Among these, lipophilic monoglycerin fatty acid esters are preferred, and lipophilic glyceryl monostearate is more preferred, from the viewpoint of excellent emulsification stability of the second agent.

Incidentally, HLB (hydrophile-lipophile balance) is considered by W.C.Griffin and is a numerical value given to nonionic surfactants. (the ethylene oxide chain) is expressed numerically. As the HLB value, a measured value calculated by an emulsification method is used (see "Handbook - Cosmetics/Materials for Pharmaceutical Preparations" Nikko Chemicals Co., Ltd. (published February 1, 1977)). For the measurement of HLB values, sorbitan monostearate (for example, NIKKOL SS-10 manufactured by Nikko Chemicals Co., Ltd., HLB value 4.7) and polyoxyethylene sorbitan monostearate (for example, Nikko Chemicals Co., Ltd.) were used as standard substances for surfactants. NIKKOL TS-10, HLB value 14.9) is used in combination. Liquid paraffin is used as the material to be emulsified. Liquid paraffin should be measured each time it is considered to vary depending on the type or lot. Liquid paraffin is emulsified with the two types of surfactants described above, the optimum ratio of surfactants is determined, and the required HLB value of liquid paraffin (HLB value to be emulsified) is determined. A calculation formula is shown in Formula (1).

通常流動パラフィンの所要ＨＬＢ値は、種類及びロットにもよるが１０．１～１０．３程度である。次に未知の界面活性剤のＨＬＢの測定は、所要ＨＬＢ値を求めた流動パラフィンを用いて測定する。未知の界面活性剤が親水性であればモノステアリン酸ソルビタンと組み合わせ、未知の界面活性剤が疎水性であればモノステアリン酸ポリオキシエチレンソルビタンと組み合わせて、上記流動パラフィンを乳化し、安定性のあるところの最適割合を求め、未知の界面活性剤のＨＬＢ値をｘとして上記数式（１）に当てはめて算出する。

The required HLB value of normal liquid paraffin is about 10.1 to 10.3, depending on the type and lot. The HLB of the unknown surfactant is then measured using liquid paraffin from which the required HLB value was determined. If the unknown surfactant is hydrophilic, it is combined with sorbitan monostearate, and if the unknown surfactant is hydrophobic, it is combined with polyoxyethylene sorbitan monostearate to emulsify the liquid paraffin and stabilize it. An optimum ratio at a certain point is determined and calculated by applying the HLB value of the unknown surfactant to the above formula (1) as x.

The lower limit of the content of component (c) in the second agent is set appropriately, but is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and still more preferably 0.1% by mass or more. is. When the content of component (c) is 0.01% by mass or more, the emulsion stability is further improved. The upper limit of the content of component (c) in the second agent is set appropriately, but is preferably 5% by mass or less, more preferably 2% by mass or less, and even more preferably 1% by mass or less. When the content of component (c) is 5% by mass or less, the emulsion stability is further improved. Ranges with any combination of the above upper and lower limits are also envisioned.

((e) component)
The second agent further comprises (e) polyoxyethylene polyoxypropylene alkyl ether, polyoxyalkylene polyhydric alcohol fatty acid ester, polyhydric alcohol fatty acid ester (excluding the case corresponding to the above component (c)), polyoxyalkylene hydroxyl Any one or more of fatty acid ethers and polyoxyalkylene sterol ethers may be included. The component (e) further improves the miscibility of the second agent with the first agent. Component (e) is a nonionic surfactant having a relatively large volume occupied by hydrophilic groups. It is believed that when such nonionic surfactants are arranged at the oil droplet-continuous layer interface, a thick layer of hydrophilic groups is formed around the oil droplets. It is speculated that the presence of this thick hydrophilic base layer weakens the interaction between the oil droplets and increases the fluidity of the continuous layer. As a result, it is believed that the mixability is improved. Fluidity here is a concept different from viscosity, and means ease of movement of the continuous layer in the emulsified structure. Therefore, by blending the component (e), it is possible to improve the mixability without lowering the viscosity.

The lower limit of the number of added moles of ethylene oxide and propylene oxide constituting the polyoxyethylene polyoxypropylene alkyl ether is set appropriately, but each is preferably 0.1 mol or more, more preferably 1 mol or more, and further preferably 2 mol or more. more than a mole. The upper limit of the number of added moles is appropriately set, but is preferably 60 mol or less, more preferably 50 mol or less, and still more preferably 40 mol or less. Such a numerical range further improves emulsion stability and mixability. Ranges with any combination of the above upper and lower limits are also envisioned. The number of added moles of ethylene oxide and propylene oxide indicates the number of moles of ethylene oxide and propylene oxide per 1 mole of alcohols in the raw material. The addition form of ethylene oxide and propylene oxide may be block addition, random addition, or a combination of block addition and random addition, and is not particularly limited.

Specific examples of alcohols used as raw materials for polyoxyethylene polyoxypropylene alkyl ether include (1) methanol, ethanol, propanol, butanol, pentanol, hexanol, octanol, nonanol, decanol, undecanol, dodecanol, tridecanol, tetradecanol, pentadecanol, hexadecanol, heptadecanol, octadecanol, nonadecanol, eicosanol, heneicosanol, docosanol, tricosanol, tetracosanol, pentacosanol, hexacosanol, heptakosanol, octacosanol, nonacosanol , linear alkyl alcohols such as triacontanol, (2) isopropanol, isobutanol, isohexanol, 2-ethylhexanol, isononanol, isodecanol, isododecanol, isotridecanol, isotetradecanol, isopentadecanol, isohexadecanol, isoheptadecanol, isooctadecanol, isononadecanol, isoeicosanol, isoheneicosanol, isodocosanol, isotrichosanol, isotetracosanol, isopentacosanol, branched alkyl alcohols such as isohexacosanol, isoheptacosanol, isooctacosanol, isononacosanol and isotriacontanol; As the alkyl group forming the polyoxyethylene polyoxypropylene alkyl ether, an alkyl group having 8 to 24 carbon atoms is preferable, and an alkyl group having 12 to 18 carbon atoms is more preferable.

Specific examples of polyoxyethylene polyoxypropylene alkyl ethers include polyoxyethylene polyoxypropylene cetyl ether (20E.O. (indicates the number of moles of ethylene oxide added (same below)), 4P.O. (propylene oxide (hereinafter the same))) HLB 16.5, polyoxyethylene polyoxypropylene cetyl ether (1E.O., 4P.O.) HLB 9.5, polyoxyethylene polyoxypropylene cetyl ether (10E. O., 4P.O.) HLB 10.5, polyoxyethylene polyoxypropylene cetyl ether (20E.O., 8P.O.) HLB 12.5, polyoxyethylene polyoxypropylene decyltetradecyl ether (30E.O.) , 6P.O.) HLB 12.0 and the like.

The HLB value of the polyoxyethylene polyoxypropylene alkyl ether is appropriately set, but is preferably 8 or more, more preferably 13 or more. When the HLB value is 8 or more, the miscibility of the second agent with the first agent is further improved.

Incidentally, HLB (hydrophile-lipophile balance) is considered by W.C.Griffin and is a numerical value given to nonionic surfactants. (the ethylene oxide chain) is expressed numerically. For the HLB value, an actual measurement value calculated from the emulsification method described in the component (b) section above is used (see "Handbook - Cosmetics/Materials -" Nikko Chemicals Co., Ltd. (published on February 1, 1977). ).

Specific examples of polyoxyalkylene polyhydric alcohol fatty acid esters or polyhydric alcohols constituting polyhydric alcohol fatty acid esters include ethylene glycol, polyethylene glycol, propylene glycol, polypropylene glycol, 1,3-butylene glycol, glycerin, and polyglycerin. , sorbitan, pentaerythritol, sorbitol, trimethylolpropane and the like.

As the fatty acid constituting the polyoxyalkylene polyhydric alcohol fatty acid ester or polyhydric alcohol fatty acid ester, a fatty acid having 8 to 24 carbon atoms is preferable. As the fatty acid having 8 to 24 carbon atoms, a known one can be appropriately used, and it may be a saturated fatty acid or an unsaturated fatty acid. Specific examples of saturated fatty acids include octanoic acid (caprylic acid), nonanoic acid, decanoic acid (capric acid), dodecanoic acid (lauric acid), tetradecanoic acid (myristic acid), hexadecanoic acid (palmitic acid), octadecanoic acid ( stearic acid), eicosanoic acid (arachidic acid), docosanoic acid (behenic acid), tetracosanoic acid and the like. Specific examples of the unsaturated fatty acids include myristoleic acid, palmitoleic acid, oleic acid, vaccenic acid, eicosenoic acid, linoleic acid, α-linolenic acid, γ-linolenic acid, and arachidonic acid.

Specific examples of the alkylene oxide constituting the alkylene oxide chain of the polyoxyalkylene polyhydric alcohol fatty acid ester include ethylene oxide and propylene oxide. The lower limit of the number of added moles of alkylene oxide is appropriately set, but is preferably 0.1 mol or more, more preferably 1 mol or more, and still more preferably 2 mol or more. The upper limit of the number of added moles is appropriately set, but is preferably 200 mol or less, more preferably 150 mol or less, and still more preferably 100 mol or less. Such a numerical range further improves emulsion stability and mixability. Ranges with any combination of the above upper and lower limits are also envisioned. The number of moles of alkylene oxide added indicates the number of moles of alkylene oxide per 1 mole of polyhydric alcohol in the starting material. When two or more types of alkylene oxides are applied, their addition mode may be block addition, random addition, or a combination of block addition and random addition, and is not particularly limited.

Specific examples of polyoxyalkylene polyhydric alcohol fatty acid esters or polyhydric alcohol fatty acid esters include POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan monopalmitate, POE sorbitan monolaurate, POE sorbitan trioleate, POE glyceryl monostearate, POE glyceryl monomyristate, POE sorbitol tetraoleate, POE sorbitol hexastearate, POE sorbitol monolaurate, POE sorbit beeswax, polyethylene glycol monooleate, polyethylene glycol monostearate, polyethylene glycol monolaurate, sorbitan monolaurate, POE-reduced lanolin, and the like.

Specific examples of hydroxy fatty acids constituting polyoxyalkylene hydroxy fatty acid ethers include 12-hydroxydodecanoic acid, 12-hydroxystearic acid, 9,10-dihydroxystearic acid and ricinoleic acid. Fatty acids including hydroxy fatty acids, such as castor oil fatty acid, hydrogenated castor oil fatty acid, etc., may also be applied. Specific examples of polyoxyalkylene hydroxy fatty acid ethers include polyoxyethylene hydrogenated castor oil and polyoxyethylene castor oil.

As the alkylene oxide chain constituting the polyoxyalkylene hydroxy fatty acid ether, the specific examples of the alkylene oxide and the added mole number described in the polyoxyalkylene polyhydric alcohol fatty acid ester section can be employed.

Specific examples of sterols constituting polyoxyalkylene sterol ethers include phytosterols and cholesterol. As the alkylene oxide chain constituting the polyoxyalkylene sterol ether, specific examples of the alkylene oxide and the number of added moles described in the polyoxyalkylene polyhydric alcohol fatty acid ester section can be employed. Specific examples of polyoxyalkylene sterol ethers include polyoxyethylene phytosterol (PEG-30 phytosterol).

Among these specific examples of the component (e), only one type may be contained alone, or two or more types may be combined and contained. Among these, polyoxyethylene polyoxypropylene alkyl ether is preferable from the viewpoint of excellent emulsification stability of the second agent.

The lower limit of the content of component (e) in the second agent is set appropriately, but is preferably 0.01% by mass or more, more preferably 0.1% by mass or more, and still more preferably 0.3% by mass or more. is. When the content of component (e) is 0.01% by mass or more, the emulsion stability and mixability are further improved. The upper limit of the content of component (e) in the second agent is set as appropriate, but is preferably 5% by mass or less, more preferably 2% by mass or less, and even more preferably 1% by mass or less. When the content of component (e) is 5% by mass or less, the emulsion stability is further improved. Ranges with any combination of the above upper and lower limits are also envisioned.

(others)
The hair bleaching and destaining agent may optionally contain components other than those mentioned above, such as solubilizers, water-soluble polymers, inorganic polymers, oily components other than those mentioned above, polyhydric alcohols, and surfactants other than those mentioned above. , pH adjusters, sugars, preservatives, stabilizers, plant extracts, crude drug extracts, vitamins, fragrances, antioxidants, chelating agents, ultraviolet absorbers, and the like.

A solubilizer is blended, for example, to liquefy the second agent. Examples of solubilizers used include, for example, water and organic solvents (solvents). Specific examples of organic solvents include ethanol, n-propanol, isopropanol, methyl cellosolve, ethyl cellosolve, methyl carbitol, ethyl carbitol, benzyl alcohol, phenethyl alcohol, γ-phenylpropyl alcohol, cinnamic alcohol, anise alcohol, p-methylbenzyl alcohol, α-dimethylphenethyl alcohol, α-phenylethanol, ethylene glycol phenyl ether (phenoxyethanol), phenoxyisopropanol, 2-benzyloxyethanol, N-alkylpyrrolidone, alkylene carbonate, alkyl ether and the like. Among specific examples of these solubilizers, only one type may be contained alone, or two or more types may be combined and contained. Among these, water is preferably applied because of its excellent ability to dissolve other components in the second agent. When water is used as the solvent, the content of water in the second agent (content at the time of use) is preferably 40% by mass or more, more preferably 50% by mass or more.

The water-soluble polymer imparts an appropriate viscosity to the hair bleaching/destaining agent. Therefore, the hair bleaching/destaining agent may contain a water-soluble polymer within a range that does not impair the effects of the present invention. Examples of water-soluble polymers include natural polymers, semi-synthetic polymers, and synthetic polymers. Specific examples of natural polymers include starch, guar gum, locust bean gum, quince seed, carrageenan, galactan, gum arabic, tragacanth gum, pectin, mannan, xanthan gum, dextran, succinoglucan, curdlan, hyaluronic acid, gelatin, Examples include casein, albumin, collagen, dextrin, triglucopolysaccharide (pullulan), and the like.

Specific examples of semi-synthetic polymers include crystalline cellulose, methyl cellulose, ethyl cellulose, hydroxyethyl cellulose, hydroxyethyl cellulose dimethyl diallyl ammonium chloride, hydroxypropyl cellulose, carboxymethyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, cationized cellulose, and cationized guar gum. , starch phosphate, propylene glycol alginate, alginate and the like.

Specific examples of synthetic polymers include polyvinyl caprolactam, polyvinyl alcohol (PVA), polyvinylpyrrolidone (PVP), vinylpyrrolidone-vinyl acetate (VP/VA) copolymer, polyvinyl butyral, polyvinyl methyl ether, carboxyvinyl polymer, polyvinyl Sodium Acrylate, Polyacrylamide, Polyethylene Oxide, Ethylene Oxide/Propylene Oxide Block Copolymer, Acrylic Acid/Alkyl Acrylate Copolymer, Polydimethylmethylenepiperidinium Chloride (Polydimethyldimethylenpyrrolidinium Chloride) (Polyquaternium-6) ) (Merquat 100: manufactured by Merck & Co.), a half ester of itaconic acid and POE alkyl ether, or an ester of methacrylic acid and POE alkyl ether, and at least one monomer selected from acrylic acid, methacrylic acid and alkyl esters thereof. and a copolymer consisting of a monomer. Among specific examples of these water-soluble polymers, one type may be contained alone, or two or more types may be combined and contained.

Specific examples of inorganic polymers include bentonite, magnesium aluminum silicate, laponite, hectorite, and anhydrous silicic acid. Among specific examples of these inorganic polymers, only one type may be contained alone, or two or more types may be combined and contained.

An oily component that is solid at 25°C impedes the effects of the present invention because it imparts moisture to the hair, emulsifies the hair bleaching and destaining agent, adjusts the viscosity, and improves viscosity stability. It may be blended within the range that does not occur. Examples of oily components that are solid at 25°C include hydrocarbons that are solid at 25°C, animal and vegetable oils that are solid at 25°C, waxes that are solid at 25°C, higher alcohols and alkyl glyceryl ethers that are solid at 25°C, and solids at 25°C. of higher fatty acids, esters that are solid at 25°C, and silicones that are solid at 25°C.

Specific examples of hydrocarbons that are solid at 25°C include paraffin, polyethylene powder, microcrystalline wax, and vaseline that are solid at 25°C. Specific examples of animal and vegetable oils that are solid at 25°C include cacao butter, shea butter, palm butter, hydrogenated palm kernel oil, and hydrogenated castor oil.

Specific examples of waxes that are solid at 25° C. include beeswax, candelilla wax, carnauba wax, lanolin, and rice bran wax. Specific examples of higher alcohols that are solid at 25° C. include myristyl alcohol, cetanol, stearyl alcohol, arachyl alcohol, behenyl alcohol, and lanolin alcohol. Specific examples of alkyl glyceryl ethers include batyl alcohol, chimyl alcohol, selachyl alcohol, and isostearyl glyceryl ether.

Specific examples of higher fatty acids that are solid at 25° C. include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, hydroxystearic acid, undecylenic acid, and ricinoleic acid. Specific examples of esters that are solid at 25° C. include butyl stearate, stearyl stearate, cetyl myristate, myristyl myristate, cetyl palmitate, cetyl lactate, myristyl lactate, lanolin acetate, cholesteryl stearate, cholesteryl oleate, oleyl oleate, dioctyl succinate, diethoxyethyl succinate and the like. Specific examples of silicones that are solid at 25° C. include highly polymerized methylpolysiloxanes having a molecular weight of 150,000 or more. Among specific examples of these oily components, only one type may be contained alone, or two or more types may be combined and contained.

Polyhydric alcohols include, for example, glycol and glycerin. Specific examples of glycols include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, high polymer polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, isoprene glycol, 1,3-butylene glycol and the like. Specific examples of glycerin include glycerin, diglycerin, polyglycerin and the like. Among specific examples of these polyhydric alcohols, one type may be contained alone, or two or more types may be combined and contained.

Surfactants serve as emulsifiers or components for solubilizing each component, and emulsify or solubilize the hair bleaching/destaining agent at the time of use to adjust the viscosity or improve the viscosity stability. Therefore, the hair bleaching/destaining agent may further contain a surfactant shown below within a range that does not impair the effects of the present invention. Surfactants include cationic surfactants, amphoteric surfactants, and nonionic surfactants.

Specific examples of cationic surfactants include lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, alkyltrimethylammonium chloride, distearyldimethylammonium chloride, cetyltrimethylammonium bromide, stearyltrimethylammonium bromide, Ethyl sulfate lanolin fatty acid aminopropylethyldimethylammonium, stearyltrimethylammonium saccharin, cetyltrimethylammonium saccharin, methacryloyloxyethyltrimethylammonium chloride, behenyltrimethylammonium methylsulfate, behenyldimethylamine, behenate diethylaminoethylamide, behenate dimethylaminopropylamide, behenic acid dimethylaminoethylamide, stearyldimethylamine, palmitoxypropyldimethylamine, stearoxypropyldimethylamine, stearic acid dimethylaminopropylamide and the like.

Specific examples of amphoteric surfactants include cocobetaine, lauramidopropylbetaine, cocamidopropylbetaine, sodium lauroamphoacetate, sodium cocoamphoacetate, coconut oil fatty acid amidopropylbetaine, laurylbetaine (lauryldimethylaminoacetic acid betaine), lauryl and sodium aminopropionate.

Specific examples of nonionic surfactants include ether-type nonionic surfactants other than component (e), ester-type nonionic surfactants other than components (c) and (e), and alkyl glucosides. etc. Specific examples of ether-type nonionic surfactants include POE cetyl ether (ceteth), POE stearyl ether (steareth), POE behenyl ether, POE oleyl ether (oleth), POE lauryl ether (laureth), POE octyldodecyl Ether, POE hexyldecyl ether, POE isostearyl ether, POE nonylphenyl ether, POE octylphenyl ether and the like.

Specific examples of alkyl glucosides include alkyl (C8-16) glucoside, POE methyl glucoside, POE methyl dioleate glucoside, and the like. Among specific examples of these surfactants, only one type may be contained alone, or two or more types may be combined and contained.

A pH adjuster may be blended in order to adjust the pH of the hair bleaching/destaining agent. Examples of pH adjusters include inorganic acids, organic acids, salts thereof, and the like. Specific examples of inorganic acids include phosphoric acid, hydrochloric acid, nitric acid, sulfuric acid and boric acid. Further, specific examples of phosphoric acid include orthophosphoric acid, polyphosphoric acid, pyrophosphoric acid, metaphosphoric acid and the like. Specific examples of organic acids include citric acid, tartaric acid, lactic acid, malic acid, succinic acid, fumaric acid, maleic acid, gluconic acid, glucuronic acid, and benzoic acid. Specific examples of salts include sodium salts, potassium salts, ammonium salts and the like. Specific examples of sugars include monosaccharides such as glucose and galactose, disaccharides such as maltose, sucrose, fructose and trehalose, and sugar alcohols. Specific examples of antiseptics include paraben, methylparaben, sodium benzoate and the like. Specific examples of stabilizers include phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, tannic acid and the like. Specific examples of antioxidants include ascorbic acids and sulfites. Specific examples of chelating agents include, for example, edetic acid (ethylenediaminetetraacetic acid (EDTA)), disodium edetate, tetrasodium edetate, diethylenetriaminepentaacetic acid and its salts, ethylenediaminehydroxyethyl triacetic acid and its salts, hydroxyethane phosphonic acid (HEDP) and salts thereof;

The dosage form of the second agent is not particularly limited, and specific examples include liquid forms such as aqueous solutions and milky lotions, gel forms, foam forms, and cream forms at 25°C. Further, in the case of non-aerosol, various forms such as a squeeze foamer type and a pump foamer type can be employed. Among these, a liquid form is preferable from the viewpoint of improving the mixing property by a shaking method.

The lower limit of the viscosity at 25° C. during storage of the second agent is 100 mPa·s or more, preferably 300 mPa·s or more, more preferably 500 mPa·s or more. When the viscosity is 100 mPa·s or more, the emulsion stability can be improved. In particular, it is possible to improve the mixing performance when a predetermined amount of each agent is put into a sealed container having a predetermined capacity and mixed by shaking. The upper limit of the viscosity of the second agent at 25° C. is 8000 mPa·s or less, preferably 7000 mPa·s or less, more preferably 6000 mPa·s or less. When the viscosity is 8000 mPa·s or less, the mixing property with the first agent can be improved. Ranges with any combination of the above upper and lower limits are also envisioned.

The viscosity can be obtained, for example, using a Brookfield viscometer under measurement conditions of 25° C. and 1 minute. A specific example of the B-type viscometer is a BL-type viscometer VISCOMETER (manufactured by Toki Sangyo Co., Ltd.). The rotor and rotation speed to be used are appropriately selected according to the measurable viscosity range of the measuring instrument. For example, if the viscosity is 100 to 250 mPa s, use the No. 1 rotor, if the viscosity is 250 to 2,500 mPa s, use the No. 2 rotor, and if the viscosity is 2,500 mPa s or more, use the No. 3 rotor. can ask. The viscosity of the second agent can be appropriately adjusted by changing the mixing ratio of the above-described solubilizer, water-soluble polymer, oily component, surfactant, and the like.

(1st agent of a 2-agent type hair bleaching and destaining agent)
The first agent contains an alkaline agent. The alkaline agent contained in the first agent promotes the action of the oxidizing agent contained in the second agent, and functions to improve the bleaching effect and/or the destaining effect of the hair. In addition, in the hair dye to be described later, the hair dyeing property is improved. Examples of alkaline agents include ammonia, alkanolamines, silicates, carbonates, hydrogencarbonates, carbamates, metasilicates, phosphates, organic amines, basic amino acids, and the like. Specific examples of alkanolamine include monoethanolamine and triethanolamine. Specific examples of silicates include sodium silicate, potassium silicate, and calcium silicate. Specific examples of carbonates include sodium carbonate, ammonium carbonate, magnesium carbonate and the like. Specific examples of hydrogencarbonate include sodium hydrogencarbonate and ammonium hydrogencarbonate. Specific examples of carbamates include ammonium carbamate and the like. Specific examples of metasilicates include sodium metasilicate and potassium metasilicate. Specific examples of the phosphate include triammonium phosphate and diammonium hydrogen phosphate. Specific examples of organic amines include 2-amino-2-methyl-1-propanol (AMP), 2-amino-2-methyl-1,3-propanediol, and guanidine. Specific examples of basic amino acids include arginine and lysine. Among the specific examples of these alkaline agents, only one type may be contained alone, or two or more types may be combined and contained. Among these, ammonia, ammonium salts, alkanolamines, and carbonates are preferably applied from the viewpoint of being excellent in the effect of improving the brightness of hair.

The content of the alkaline agent in the hair bleaching / destaining agent at the time of use, that is, the mixture of the first agent and the second agent, when the hair bleaching / destaining agent is applied to ordinary bleaching / destaining treatment, It is preferably blended in an amount such that the pH is in the range of 7-12, more preferably in an amount such that the pH is in the range of 9-12. By adjusting the pH of the mixture to 7 or higher, the action of the oxidizing agent contained in the second agent can be promoted. By adjusting the pH of the mixture to 12 or less, damage to the hair due to application of the hair bleaching/destaining agent can be suppressed. As for the pH of the mixture, the mixture of each agent is diluted 10 times with water and dissolved at a concentration of 10% by mass, and the pH at 25° C. is measured.

The first agent may contain components that are generally contained in hair bleaching/destaining agents and that do not inhibit the actions of the components described above. For example, the ingredients contained in the second agent described above may be contained as appropriate within a range that does not impair the effects of the present invention.

The dosage form of the first agent during use or storage is not particularly limited, and specific examples include liquid forms such as aqueous solutions and milky lotions, gel forms, foam forms, cream forms, and solid forms at 25°C. be done. Examples of solid forms include powders, granules, tablets, and the like. In addition, in the case of a solid dosage form, dispersants such as metal stearates such as calcium stearate and magnesium stearate, sodium sulfate, talc, lactose, and low-substituted hydroxypropyl cellulose may be blended. Among specific examples of these dispersants, only one type may be contained alone, or two or more types may be combined and contained. Among these, the dosage form at the time of use is preferably liquid, gel, foam, or cream, and particularly preferably liquid or cream, from the viewpoint of improving mixability with the second agent.

<Two agent type hair dye>
A two-agent type hair dye is composed of, for example, a first agent containing at least an alkali agent and an oxidation dye, and (d) a second agent containing an oxidizing agent and the like. The following description will focus on differences from the hair bleaching and destaining agents described above.

(Second agent of two-agent hair dye)
The second agent of the hair dye has, for example, the same composition as the second agent of the hair bleaching and destaining agent described above.
(First agent of two-agent hair dye)
The first part of the hair dye contains, for example, an alkaline agent and an oxidation dye. Examples of the alkali agent contained in the first agent are the same as those described above as specific examples of the alkali agent used in the hair bleaching and destaining agent described above. Oxidation dyes are compounds capable of developing color due to oxidative polymerization by an oxidizing agent and are classified into dye intermediates and couplers, and oxidation dyes preferably include dye intermediates and couplers.

Examples of dye intermediates include p-phenylenediamine, toluene-2,5-diamine (p-toluylenediamine), N-phenyl-p-phenylenediamine, 4,4'-diaminodiphenylamine, p-aminophenol, o- aminophenol, p-methylaminophenol, N,N-bis(2-hydroxyethyl)-p-phenylenediamine, 2-hydroxyethyl-p-phenylenediamine, o-chloro-p-phenylenediamine, 4-amino-m -cresol, 2-amino-4-hydroxyethylaminoanisole, 2,4-diaminophenol, 1-hydroxyethyl-4,5-diaminopyrazole, salts thereof and the like. Specific examples of salts include hydrochlorides, sulfates, and the like. Among specific examples of these dye intermediates, only one type may be contained alone, or two or more types may be contained in combination.

Couplers develop color by combining with a dye intermediate. Examples of couplers include resorcinol, 5-amino-o-cresol, m-aminophenol, α-naphthol, 5-(2-hydroxyethylamino)-2-methylphenol, m-phenylenediamine, 2,4-diaminophenoxyethanol. , toluene-3,4-diamine, 2,6-diaminopyridine, diphenylamine, N,N-diethyl-m-aminophenol, phenylmethylpyrazolone, 1,5-dihydroxynaphthalene, and salts thereof. Specific examples of salts include hydrochlorides, sulfates, and the like. Among specific examples of these couplers, one type may be contained alone, or two or more types may be combined and contained. Since the oxidation dye can change the color tone of hair in various ways, it is preferably composed of at least one selected from the above specific examples of the dye intermediate and at least one selected from the above specific examples of the coupler. Configured. As dyes other than the oxidation dyes, the first agent may appropriately contain, for example, oxidation dyes listed in "Standards for Quasi-drug Ingredients" (published in June 2006, Yakuji Nippo Co., Ltd.).

The lower limit of the content of the oxidation dye in the hair dye is appropriately set, but is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and still more preferably 0.1% by mass or more. . When the content of the oxidation dye is 0.01% by mass or more, the tint can be particularly improved. The upper limit of the content of the oxidation dye in the hair dye is appropriately set, but is preferably 10% by mass or less, more preferably 7% by mass or less, and even more preferably 5% by mass or less. When the content of the oxidation dye is 10% by mass or less, the solubility in the solubilizer can be improved, particularly when a solubilizer is used. Ranges with any combination of the above upper and lower limits are also envisioned.

In addition, the first agent may further contain, if necessary, components other than the components described above, for example, components contained in the first and second agents of the hair bleaching and destaining agent described above.
Next, a method for using the oxidizing agent-containing composition of this embodiment will be described below.

A mixture is prepared by mixing each agent mentioned above at the time of use. The mixture is prepared by placing a predetermined amount of each agent in a sealed container having a predetermined capacity that can be liquid-tightly closed, and shaking and mixing. Shaking and mixing using a 100 to 300 mL cylindrical sealable container is preferred for ease of mixing operation. In addition, the total amount of the mixture in the container is preferably 20 to 80% by volume based on the content of the closed container from the viewpoint of improving mixing properties. Shaking and mixing in a sealed container containing each agent may be performed manually by vertical and horizontal reciprocating motion, rotating motion, or the like, or may be mechanically performed using a vibrator or the like.

The mixing ratio of the first part and the second part of the two-part composition is appropriately set. It is 5 or more, more preferably 0.7 or more. Assuming that the mass of the first agent is 1, the upper limit of the mass of the second agent is preferably 3 or less, more preferably 2 or less. Ranges with any combination of the above upper and lower limits are also envisioned. Mixability can be further improved by defining such a range.

The dosage form of the mixture is not particularly limited as long as it can be applied to hair, and specific examples include liquid forms such as aqueous solutions and milky lotions, gel forms, foam forms, and cream forms at 25°C. . Cream, paste, milky lotion, and gel are preferred from the viewpoints of ease of removal with a brush or comb, improved spreadability and adhesion to the hair, and excellent application operability. A necessary amount of the obtained mixture is applied to the hair with thinly gloved hands, a comb, a brush, a brush, an applicator such as an applicator, a lid having a discharge port or a container with a comb, or the like.

After the mixture has been applied to the hair, a step of rinsing the mixture applied to the hair with water is carried out in a conventional manner after a predetermined period of time has elapsed. Next, a step of washing the hair, preferably using a shampoo composition in a conventional manner, and rinsing with water is carried out. The shampoo composition is not particularly limited as long as it is applied for washing hair, and known shampoo compositions can be applied. Next, a step of rinsing the hair with a rinsing composition and rinsing with water is performed, preferably according to a conventional method. The rinsing composition is not particularly limited as long as it is applied for rinsing hair, and known rinsing compositions can be applied. A known rinse composition can be applied to the treatment step using the rinse composition. Next, a step of drying the hair is carried out, preferably according to conventional methods.

According to the oxidizing agent-containing composition used as the hair bleaching/destaining agent or hair dye of the above embodiment, the following effects can be obtained.
(1) The oxidizing agent-containing composition of the present embodiment contains (d) an oxidizing agent and predetermined amounts of components (a), (b), and (c). Therefore, while maintaining the emulsification stability of the oxidizing agent-containing composition, it is possible to improve mixing with other agents by shaking. In particular, even when a large amount of component (a) is blended for the purpose of improving bleaching power, bleaching power, or hair dyeing power, deterioration in emulsification stability can be suppressed.

(2) In the present embodiment, (e) polyoxyethylene polyoxypropylene alkyl ethers, polyoxyalkylene polyhydric alcohol fatty acid esters, polyhydric alcohol fatty acid esters (excluding cases corresponding to component (c) above), polyoxy When one or more of the alkylene hydroxy fatty acid ether and the polyoxyalkylene sterol ether are included, the emulsification stability of the oxidizing agent-containing composition and the miscibility with other agents are further improved. In particular, it improves the miscibility with other agents without reducing the viscosity of the oxidizing agent-containing composition.

(3) In the present embodiment, when an N-acyl taurine salt is included as the component (b), the emulsion stability is further improved.
(4) In general, when the hair bleaching/decoloring agent or hair dye is composed of the first agent and the second agent, the mixing ratio of the first agent and the second agent is two agents excessive, for example, the first agent: Mixability can be improved by setting the second agent to more than 1:3 (mass ratio). However, in this case, the amount of components derived from the first agent in the mixture, such as dyes and conditioning components, is relatively small. As a result, it may be difficult to create a color number that will dye gray hair properly, and the effect of improving the feel of the hair may not be obtained efficiently.

In the present embodiment, even if the mixing ratio of the first part and the second part of the hair bleaching / destaining agent or hair dye is 1:0.5 to 3 as a mass ratio, the mixability is reduced. Also, the content of the components blended in the first agent in the mixture is not lowered more than necessary. Therefore, the effects exhibited by the components in the first agent can be effectively exhibited.

Note that the above embodiment can be implemented with the following modifications. The above embodiments and the following modifications can be combined with each other within a technically consistent range.
- In the above-mentioned hair dye, as a dye other than the above-mentioned oxidation dye, it is listed in, for example, "Standards for Quasi-drug Ingredients" (published in June 2006, Yakuji Nippo Co., Ltd.) within a range that does not impair the effects of the present invention. A direct dye may be contained as appropriate.

In the oxidizing agent-containing composition of the above embodiment, each component (a) to (e) may be blended in the oxidizing agent-containing composition during storage, and is one of the other components constituting each agent. The number of dosage forms may be further increased by configuring the part as a separate drug. Even in such a configuration, the emulsion stability and mixability can be improved.

The hair bleaching/destaining agent or hair dyeing agent of the above-described embodiment can be used for each component contained in each agent constituting the hair bleaching/destaining agent or hair dyeing agent described above, as long as the effects of the present invention are exhibited. A part may be configured as a separate drug to increase the number of dosage forms.

For example, in the first agent of the hair bleaching/destaining agent or hair dyeing agent described above, the alkaline agent and the composition other than the alkaline agent may be separated and configured as separate agents. In addition, it may be configured as a multi-component hair bleaching/decoloring agent or hair dyeing agent in which an agent containing an oxidizing aid such as a persulfate, percarbonate or perborate is combined.

Next, the embodiment will be described more specifically with reference to examples and comparative examples. It should be noted that the present invention is not limited to the configurations described in Examples.
A first agent of an oxidizing hair dye and a second agent as an oxidizing agent-containing composition containing each component shown in Tables 1 to 3 were prepared. In each table, the numerical value in the column indicating each component indicates the content of the component in that column, and the unit is % by mass. The notations "a" to "d" in the table indicate compounds corresponding to the components (a) to (d) described in the claims of the present application. "b/a" indicates the mass ratio of the content of component (b) to the content of component (a). E. in the compound name. O. indicates the number of added moles of ethylene oxide. P. O. indicates the number of moles of propylene oxide added.

The viscosity of the second agent at 25 ° C. is measured using a BL-type viscometer VISCOMETER (manufactured by Toki Sangyo Co., Ltd.) as a B-type viscometer. No. 2 rotor was used in the case of , and No. 3 rotor was used in the case of 2500 mPa·s or more. The viscosity of the second agent is shown in the "Viscosity" column in the table.

The emulsification stability of the second agent and the miscibility with the first agent were evaluated by the methods shown below.
(Emulsion stability)
The emulsification stability of the liquid second agent was evaluated by five panelists visually evaluating the state of separation of the second agent after putting it in a transparent glass container and allowing it to stand at 60° C. for one day. No separation: excellent (5 points), almost no separation: good (4 points), very little separation: fair (3 points), some separation: good (3 points) , Slightly Poor (2 points), and Poor (1 point) where a large amount of separation is observed. Calculate the average value of the scoring results of each panelist, and the average value of 4.6 points or more is "excellent: 5", 3.6 points or more and less than 4.6 points is "good: 4", 2.6 points or more 3 The evaluation result was defined as "Fair: 3" for less than 6 points, "Slightly poor: 2" for 1.6 to less than 2.6 points, and "Poor: 1" for less than 1.6 points.

(mixed)
The first part and the second part were put in a cylindrical closed resin container (inner diameter 40 mm x height 140 mm) at a mass ratio of 1:1.5, and the mixture was manually reciprocated 30 times up and down with a swing width of about 30 cm. A shaking operation was performed with

0.2 g of the mixture was weighed onto a glass plate, the mixture was sandwiched between another glass plate, and five panelists visually evaluated whether or not there was any undissolved residue, thereby judging the mixability. Excellent (5 points) with no uneven parts and no unmelted parts, good (4 points) with almost no uneven parts and unmelted parts, very little uneven parts or unmelted parts 5 points: acceptable (3 points), uneven part or a little unmelted part, slightly poor (2 points), uneven part or a lot of unmelted part, bad (1 point) scored with Calculate the average value of the scoring results of each panelist, and the average value of 4.6 points or more is "excellent: 5", 3.6 points or more and less than 4.6 points is "good: 4", 2.6 points or more 3 The evaluation result was defined as "Fair: 3" for less than 6 points, "Slightly poor: 2" for 1.6 to less than 2.6 points, and "Poor: 1" for less than 1.6 points. The results are shown in the table below.

Furthermore, the lightness and oily squeaky feeling were evaluated by the methods shown below.
Immediately after preparing the mixture of oxidative hair dyes obtained in the evaluation of mixability, a comb with a discharge port was attached, and while pressing the container, a black wig (Queen Cut No. 775S manufactured by Beaulux) was combed with a comb. The mixture was applied. It was left at 30°C for 15 minutes. Next, after rinsing the oxidative hair dye adhering to the wig with water at 40° C. for 30 seconds, the wig was shampooed twice (bigen treatment shampoo manufactured by Hoyu Co., Ltd. as a shampoo composition) and rinsed (rinse composition). As a product, Bigen Treatment Rinse manufactured by Hoyu Co., Ltd.) was applied once. The shampoo composition and rinse composition were rinsed with water after each treatment. Subsequently, the wig was dried with warm air and left for one day.

(brightness)
The lightness of the wigs after the hair dyeing treatment in each of the above examples was visually evaluated by five panelists under a standard light source and evaluated according to the following criteria to determine whether or not the lightness was excellent. It was scored on a 5-point scale of excellent (5 points), good (4 points), fair (3 points), somewhat poor (2 points), and poor (1 point). Calculate the average value of the scoring results of each panelist, and the average value of 4.6 points or more is "excellent: 5", 3.6 points or more and less than 4.6 points is "good: 4", 2.6 points or more 3 The evaluation result was defined as "Fair: 3" for less than 6 points, "Slightly poor: 2" for 1.6 to less than 2.6 points, and "Poor: 1" for less than 1.6 points. The results are shown in the table below.

(Feeling oily)
Regarding oil squeakiness, five panelists evaluated the oil squeaky feeling from immediately after rinsing each mixed solution attached to the wig with water at 40 ° C. for 30 seconds to before washing with shampoo according to the following criteria. A judgment was made as to whether or not the evaluation was excellent. Excellent (5 points) when no oily squeakiness is felt, good (4 points) when almost no oily squeakiness is felt, acceptable (3 points) when a very slight oily squeaky feeling is felt, oily A squeaky feeling was scored on a 5-point scale: somewhat poor (2 points), and a strong oil squeaky feeling was poor (1 point). Calculate the average value of the scoring results of each panelist, and the average value of 4.6 points or more is "excellent: 5", 3.6 points or more and less than 4.6 points is "good: 4", 2.6 points or more 3 The evaluation result was defined as "Fair: 3" for less than 6 points, "Slightly poor: 2" for 1.6 to less than 2.6 points, and "Poor: 1" for less than 1.6 points. The results are shown in the table below.

表２，３に示されるように、各実施例は、各評価項目について可以上の結果であることが確認された。また、（ｅ）成分を配合することで粘度を下げることなく混合性を向上できることが確認された。表３に示されるように、（ｂ）成分を含有しない比較例１は、各実施例に対して、特に乳化安定性の評価が劣ることが確認された。（ｃ）成分を含有しない比較例２は、各実施例に対して、特に乳化安定性の評価が劣ることが確認された。第２剤の粘度が９０００ｍＰａ・ｓである比較例３は、各実施例に対して、混合性の評価が劣ることが確認された。第２剤の粘度が４ｍＰａ・ｓである比較例４は、各実施例に対して、特に乳化安定性の評価が劣ることが確認された。（ａ）成分が第２剤中において４質量％未満である比較例５，６は、各実施例に対して、特に明度の評価が劣ることが確認された。

As shown in Tables 2 and 3, it was confirmed that each example gave acceptable or better results for each evaluation item. Moreover, it was confirmed that blending of the component (e) can improve the mixability without lowering the viscosity. As shown in Table 3, it was confirmed that Comparative Example 1, which did not contain the component (b), was inferior in evaluation of emulsion stability, in particular, to each Example. It was confirmed that Comparative Example 2, which did not contain the component (c), was inferior in evaluation of emulsion stability, in particular, to each Example. It was confirmed that Comparative Example 3, in which the second agent had a viscosity of 9000 mPa·s, was inferior in evaluation of mixing performance to each Example. It was confirmed that Comparative Example 4, in which the viscosity of the second agent was 4 mPa·s, was inferior to each of the Examples, particularly in evaluation of emulsion stability. It was confirmed that Comparative Examples 5 and 6, in which the component (a) was less than 4% by mass in the second agent, were inferior to the respective Examples in evaluation of brightness.

(prescription example)
Formulation examples of the oxidative hair dye of the present invention are shown below.
Formulation Examples 1 and 2 constituted the second agent of the oxidative hair dye shown in Table 4. As a result of evaluation in the same manner as in Example 1, it was confirmed that the second agents of Formulation Examples 1 and 2 were excellent in emulsion stability, mixability, lightness, and oily squeaky feeling, as in Example 1.

Claims (5)

An oxidizing agent-containing composition containing the following components (a) to (d) and having a viscosity of 100 mPa·s or more and 8000 mPa·s or less at 25°C, and is mixed with other agents by a shaking method to bleach hair. - A composition containing an oxidizing agent, which is used as a destaining agent or a hair dye.
(a) 4% by mass or more of oily component that is liquid at 25°C (b) anionic surfactant (c) glycerin fatty acid ester (d) oxidizing agent 2. The oxidizing agent-containing composition according to claim 1, wherein the (c) glycerin fatty acid ester is a lipophilic monoglycerin fatty acid ester. Furthermore, (e) polyoxyethylene polyoxypropylene alkyl ethers, polyoxyalkylene polyhydric alcohol fatty acid esters, polyhydric alcohol fatty acid esters (excluding cases corresponding to component (c) above), polyoxyalkylene hydroxy fatty acid ethers, and 3. The oxidizing agent-containing composition according to claim 1, comprising any one or more of polyoxyalkylene sterol ethers. The oxidizing agent-containing composition according to any one of claims 1 to 3, wherein the (b) anionic surfactant comprises an N-acyl taurine salt. The other agent is an agent containing an alkaline agent, and the mixing ratio of the agent containing the alkaline agent and the oxidizing agent-containing composition at the time of use is 1:0.5 to 3 as a mass ratio. The oxidant-containing composition according to any one of 1 to 4.