Composition for suppressing fading of dyed hair and method for suppressing fading of dyed hair using the same

Abstract

To provide a composition capable of suppressing the fading of dyed hair.SOLUTION: The present invention provides a composition for suppressing the fading of dyed hair that contains a water-soluble compound with a Hansen solubility parameter δh of δh≤9 MPa0.5 as an active ingredient, and a method for suppressing the fading of dyed hair using the composition.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a composition for inhibiting fading of dyed hair and a method for inhibiting fading of dyed hair using the same. [Background technology]

[0002] Hair dyeing has been practiced for a long time, but in recent years, hair dyes have become more and more popular as a part of fashion, thanks to the improved performance of hair dyes and the ability to dye hair in a variety of colors. Hair dyeing includes hair dyes for gray hair and hair coloring, which use oxidative hair dyes, as well as hair manicures, which use acidic hair dyes. However, hair dyes are known to fade when exposed to factors such as washing and ultraviolet rays, and dye fastness to washing and sunlight fastness tests are used as indicators for evaluating the durability of the dyeing effect of hair dyes.

[0003] Various techniques have been investigated for the purpose of preventing fading of dyed hair due to washing or ultraviolet rays. For example, a hair dye post-treatment composition containing an ester compound of an unsaturated dicarboxylic acid having 4 to 6 carbon atoms and an alcohol having 12 to 24 carbon atoms (Patent Document 1), a hair cosmetic containing chitosans, sterols and an oxycarboxylic acid (Patent Document 2), an oil-based hair cosmetic composition containing isoparaffins, ester oils or vegetable oils having a flash point of 70° C. or higher and lower than 150° C., and isoparaffins having a flash point of 40° C. or higher and lower than 70° C. (Patent Document 3), and the like have been disclosed.

[0004] Meanwhile, the present inventors have found that hair dye fading occurs not only when washed or exposed to ultraviolet light, but also in a high humidity environment; however, no technology aimed at preventing hair dye fading caused by humidity has been reported to date. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2009-256280 A [Patent Document 2] JP 2007-008867 A [Patent Document 3] JP 2006-069925 A Summary of the Invention [Problem to be solved by the invention]

[0006] An object of the present invention is to provide a composition capable of suppressing fading of dyed hair. [Means for solving the problem]

[0007] As a result of intensive research into solving the above problems, the present inventors discovered that applying a water-soluble compound having a Hansen solubility parameter δh within a specific range to dyed hair inhibits hair fading, and thus completed the present invention.

[0008] That is, in the present invention, δh in the Hansen solubility parameter is δh≦9MPa. 0.5 The present invention relates to a composition for inhibiting fading of dyed hair, which comprises as an active ingredient a water-soluble compound represented by the formula (I).

[0009] In addition, the present invention provides a method for manufacturing a solubility-enhancing polymer having a Hansen solubility parameter δh≦9MPa. 0.5 The present invention relates to a method for inhibiting fading of dyed hair, comprising applying a water-soluble compound represented by the formula (I) to dyed hair. Effect of the Invention

[0010] The composition of the present invention, when applied to dyed hair, provides an excellent effect of inhibiting discoloration, particularly in the case of discoloration that occurs in a high humidity environment, and allows the color of dyed hair to be maintained for a long period of time. [Brief description of the drawings]

[0011] [Figure 1] Photographs showing the state of fading of dyed hair under various humidity conditions at 25° C. in Reference Example 1 (from the left: 40% relative humidity, 60% relative humidity, and 80% relative humidity). DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] The composition for inhibiting fading of dyed hair of the present invention (hereinafter referred to as "the composition of the present invention") has a Hansen solubility parameter δh of δh≦9MPa. 0.5 The Hansen solubility parameter (HSP) is a value published by Charles M. Hansen in 1967 that is used to predict the solubility of a substance, and is calculated by the following three parameters (unit: MPa): 0.5 ) δd: Energy due to intermolecular dispersion forces δp: Energy due to dipole interactions between molecules δh: Energy due to hydrogen bonds between molecules

[0013] These three parameters can be considered as coordinates in a three-dimensional space (Hansen space), and when the HSPs of two substances are placed in Hansen space, the closer the distance between the two points is, the easier it is to dissolve in each other, and they can be used as an index of affinity between substances. The HSP of each substance can be calculated using the computer software "HSPiP: Hansen Solubility Parameters in Practice" or similar.

[0014] Hansen solubility parameter distance Ra (unit: MPa 0.5 ) can be calculated by the following formula when the coordinates of the HSP of component X are (δdX, δpX, δhX) and the coordinates of the HSP of component Y are (δdY, δpY, δhY). Ra can also be calculated by the Ra calculation function of HSPiP.

number

[0015] The active ingredient of the present invention has a Hansen solubility parameter δh of δh≦9MPa. 0.5and preferably, Δh≦8 MPa. 0.5 and more preferably Δh≦7 MPa. 0.5 It is.

[0016] The δh in the Hansen solubility parameter of the present invention is δh≦9MPa 0.5 Examples of the water-soluble compound include polyoxyalkylene monohydric alcohol ethers, polyoxyalkylene polyhydric alcohol ethers, and dicarboxylic acid esters. In the present invention, it is preferable to use polyoxyalkylene polyhydric alcohol ethers and dicarboxylic acid esters. Examples of polyoxyalkylene polyhydric alcohol ethers include polyoxyalkylene glycerin, polyoxyalkylene alkyl glucosides (polyoxypropylene alkyl glucosides, polyoxyethylene alkyl glucosides, etc.), polyoxyalkylene sorbitol, polyoxyalkylene erythritol ethers, polyoxyalkylene pentaerythritol ethers, polyoxyalkylene diglyceryl ethers, polyoxyalkylene trimethylolpropanes, polyoxypropylene glycols, polyoxyethylene polyoxypropylene glycols, polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ethers, polyoxyalkylene xylitols, polyoxya Examples of the polyoxyalkylene glycol include polyoxyalkylene dipentaerythritol, polyoxyalkylene inositol, polyoxyalkylene sucrose ether, polyoxyalkylene trehalose ether, and polyoxyalkylene maltitol ether. The polyoxyalkylene glycol is preferably one or more selected from the group consisting of polyoxyalkylene glycerin, polyoxyalkylene alkyl glucoside, polyoxyalkylene diglyceryl ether, and polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether, and more preferably one or more selected from the group consisting of polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether and polyoxyalkylene alkyl glucoside. Specifically, PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin (polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether) (δh=5.2 MPa 0.5 ), PPG-10 methyl glucose (polyoxyalkylene alkyl glucoside, polyoxypropylene alkyl glucoside) (δh=0.1MPa 0.5 ), Methyl gluceth-10 (polyoxyalkylene alkyl glucoside, polyoxyethylene alkyl glucoside) (δh=6.0MPa 0.5 ) etc. The dicarboxylic acid ester is a diester formed by condensing a divalent carboxylic acid with a hydroxy group of glycol, glycol ether, alcohol, or the like, and can be used without any particular limitation as long as it is one that is usually used in cosmetics. Specifically, cyclohexane-1,4-dicarboxylate bisethoxydiglycol (δh=6.6MPa 0.5 ) and so on. Thus, δh≦9MPa 0.5 Although it is not clear why water-soluble compounds such as these are able to inhibit fading of dyed hair, it is thought that the progress of fading may be inhibited by protecting the hair surface with water-soluble compounds that have a certain degree of hydrophobicity.

[0017] The water-soluble compound means a compound having a solubility in 100 g of water at 20° C. of 3 g / 100 g or more.

[0018] The water-soluble compound of the present invention further has a Hansen solubility parameter distance Ra from the hair surface of Ra≦9 MPa. 0.5 Preferably, Ra≦8 MPa. 0.5 It is more preferable that the HSP of the hair surface is, for example, δd=17.7 MPa. 0.5 , δp=8.8MPa 0.5 , δh=1.0MPa 0.5 (See Table 3 (Hair (1))). Examples of such water-soluble compounds include PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin (Ra = 6.90 MPa) (see the 25th Kansai University Symposium on Advanced Science and Technology, Kansai University Organization for Promotion of Advanced Science and Technology, Nanami Kamino, Hideki Yamamoto, Calculation of Hansen solubility parameters of hair using the amount of copper adsorbed). 0.5 ), PPG-10 methyl glucose (Ra=3.61MPa 0.5 ), Methyl Gluceth-10 (Ra=6.72MPa 0.5 ), cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol (Ra=7.17MPa 0.5 ) etc.

[0019] The active ingredient of the present invention further has a Hansen solubility parameter δp of δp<9MPa. 0.5 It is preferable that δp≦8.5MPa. 0.5 More preferably, δp≦8MPa 0.5 More preferably, the water-soluble compound is, for example, PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin (Δp=7.9 MPa 0.5 ), PPG-10 methyl glucose (δp=7.8MPa 0.5 ), Methyl Gluceth-10 (δp=8.1MPa 0.5 ), cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol (δp=5.1MPa 0.5 ) etc.

[0020] The active ingredient of the present invention further has a Hansen solubility parameter δd of 10≦δd≦20MPa. 0.5 Such a water-soluble compound is preferably, for example, PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin (δd=15MPa 0.5 ), PPG-10 methyl glucose (δd = 16MPa 0.5 ), Methyl Gluceth-10 (δd=15.5MPa 0.5 ), cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol (δd=16.5MPa 0.5 ) etc.

[0021] The content of the water-soluble compound, which is the active ingredient, in the composition of the present invention is not particularly limited, but is, for example, preferably 0.01 to 50 mass% (hereinafter simply referred to as "%"), more preferably 0.1 to 25%, and even more preferably 0.1 to 15%.

[0022] In addition to the water-soluble compound as the active ingredient, the composition of the present invention may contain any of the ingredients commonly used in cosmetics, for example, surfactants such as cationic surfactants, nonionic surfactants, anionic surfactants, and amphoteric surfactants, UV absorbers, water-soluble polymers, polyhydric alcohols, aqueous ingredients such as sugars, oils, antibacterial agents, preservatives, cooling agents, powders, vitamins, cosmetic ingredients, fragrances, etc., within the range that does not impair the effects of the present invention. The composition of the present invention may be produced by mixing the active ingredient and any of the optional ingredients according to a known production method.

[0023] The formulation or form of the composition of the present invention is not particularly limited, and may be any formulation such as liquid, emulsion, solid, cream, gel, mousse, mist, or multi-layered. The composition may be in the form of a hair cosmetic such as shampoo, rinse, or hair pack used when washing hair, or an in-bath treatment, out-bath treatment, or hair styling product used after washing hair, and may be applied to hair by coating, spraying, or other methods. The composition of the present invention does not need to be washed off after application, and is therefore suitable for use as an out-bath hair cosmetic. The composition of the present invention may be used as it is as a final formulation (cosmetic), or may be a part of the composition and further mixed with other ingredients to form a final formulation (cosmetic).

[0024] The composition of the present invention is not particularly limited in the type of hair dye applied to the dyed hair, and can be applied to hair dyed with known hair dyes such as oxidative hair dyes, acidic hair dyes, etc. The composition of the present invention is also excellent in the effect of suppressing fading of dyed hair caused by various causes such as washing hair and ultraviolet rays, and in particular, exhibits an excellent suppressing effect against fading in a high humidity environment, which has not been known until now, and can effectively suppress fading that occurs under high humidity conditions, for example, a relative humidity of 60% or more, and further 80% or more.

[0025] The method for suppressing discoloration of the present invention is the above-mentioned Δh≦9MPa. 0.5The method of application to dyed hair is not particularly limited, but for example, a water-soluble compound having a δh≦9 MPa or less for the entire hair can be applied by coating, spraying, or the like to the dyed hair. 0.5 The water-soluble compound may be applied in an amount of about 0.00005 to 20 g per application after dyeing, before washing, after washing, etc.

[0026] The present invention can also employ the following configuration. <1> The δh in the Hansen solubility parameter is δh≦9MPa 0.5 The present invention relates to a composition for inhibiting fading of dyed hair, which comprises as an active ingredient a water-soluble compound represented by the formula (I). <2> Water-soluble compound δd=17.7MPa 0.5 , δp=8.8MPa 0.5 , δh=1.0MPa 0.5 The distance Ra from the Hansen solubility parameter is Ra≦9MPa 0.5 The composition for inhibiting fading of dyed hair according to <1>, <3> The composition for suppressing fading of dyed hair according to <1> or <2>, wherein the water-soluble compound is a polyoxyalkylene polyhydric alcohol ether and / or a dicarboxylic acid ester. <4> The composition for suppressing fading of dyed hair according to <3>, wherein the polyoxyalkylene polyhydric alcohol ether is one or more selected from the group consisting of polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether and polyoxyalkylene alkyl glucoside. <5> The composition for suppressing fading of dyed hair according to <4>, wherein the polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether is PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin. <6> The composition for suppressing fading of dyed hair according to <4>, wherein the polyoxyalkylene alkyl glucoside is PPG-10 methyl glucose and / or methyl gluceth-10. <7> The composition for suppressing fading of dyed hair according to <3>, wherein the dicarboxylate ester is bis(ethoxydiglycol)cyclohexane-1,4-dicarboxylate. <8> The composition for suppressing fading of dyed hair according to any one of <1> to <7>, which suppresses fading under high humidity conditions. <9> The composition for suppressing fading of dyed hair according to any one of <1> to <8>, which is for after-bath use. <10> The δh in the Hansen solubility parameter is δh≦9MPa 0.5 The present invention relates to a method for inhibiting fading of dyed hair, comprising applying a water-soluble compound represented by the formula (I) to dyed hair. <11> Water-soluble compound δd=17.7MPa 0.5 , δp=8.8MPa 0.5 , δh=1.0MPa 0.5 The distance Ra from the Hansen solubility parameter is Ra≦9MPa 0.5 The method for suppressing fading of dyed hair according to <10>, <12> The method for suppressing fading of dyed hair according to <10> or <11>, wherein the compound is a polyoxyalkylene polyhydric alcohol ether and / or a dicarboxylic acid ester. <13> The method for suppressing fading of dyed hair according to <12>, wherein the polyoxyalkylene polyhydric alcohol ether is one or more selected from the group consisting of polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether and polyoxyalkylene alkyl glucoside. <14> The method for suppressing fading of dyed hair according to <13>, wherein the polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether is PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin. <15> The method for suppressing fading of dyed hair according to <13>, wherein the polyoxyalkylene alkyl glucoside is PPG-10 methyl glucose and / or methyl gluceth-10. <16> The method for suppressing fading of dyed hair according to <12>, wherein the dicarboxylate ester is bis(ethoxydiglycol)cyclohexane-1,4-dicarboxylate. <17> The method for suppressing fading of dyed hair according to any one of <10> to <16>, wherein the method suppresses fading under high humidity conditions. EXAMPLES

[0027] The present invention will be described in more detail below with reference to examples. Note that the examples described below are representative examples of the present invention, and the scope of the present invention should not be construed as being narrowed by these examples.

[0028] Reference example 1 Dyed hair fading test (red): A test hair bundle (1 g, 10 cm long, light brown (manufactured by Staffs)) was used as a human hair bundle. This test hair bundle was dyed using the following dyeing agent (red oxidation dye). For dyeing, the first and second agents of the oxidation dye were mixed in a mass ratio of 1:1 to prepare a dyeing solution, and about 9 g of this solution was applied to the human hair bundle while spreading it evenly, left for 20 minutes, and then washed with lukewarm water until the color of the solution disappeared. Then, the hair was washed with the evaluation shampoo of the formula shown below, and after rinsing, it was thoroughly dried with a hair dryer to prepare dyed hair. This dyed hair was left for one week in an environment of 40%, 60%, or 80% relative humidity at room temperature (25°C) (the appearance of the dyed hair after one week is shown in Figure 1). The hair bundle was measured for color before and after the start of the test using the method shown below, and the color difference ΔE was calculated. The results are shown in Table 1.

[0029] <Dyeing agent> Agent 1: Assort Aria C C-8 / RV (manufactured by Nicca Chemical Co., Ltd.) Agent 2: Assort Aria C OX-6.0 (manufactured by Nicca Chemical Co., Ltd.)

[0030] <Shampoo for evaluation> (Component) (mass%) 1 Sodium Laureth Sulfate 7.0 2 Cocamidopropyl Betaine 5.0 3 Citric acid 0.5 4. Methylparaben 0.5 5 Sodium benzoate 0.5 6 Polyquaternium-10 0.5 7 Distilled water remaining

[0031] (Manufacturing method) A: Add component (6) to 10% of component (7) and allow to swell uniformly at 80°C. B: Components (1) to (5) are added to the remainder of component (7) and mixed uniformly at 80°C. do. C: Mix A and B and cool to room temperature. D: C was filled into a container to obtain a shampoo for evaluation (pH=4.5 at 25° C.).

[0032] <Spectrophotometer and measurement conditions> Spectrophotometer CM-700d (Konica Minolta) Target mask: Φ3mm Measurement Mode: None Measurement method: Place a bundle of human hair on a black background and measure with a color difference meter at a vertical angle Measurement location: Measure the center of the human hair bundle (halfway between the tip and the root) (The front and back of the human hair bundle are measured on the same side before and after the test)

[0033] [Table 1]

[0034] These results demonstrated that dyed hair fades rapidly under high humidity conditions.

[0035] Test Example 1 Dyed hair fading inhibition test (red): Red dyed hair was prepared in the same manner as in Reference Example 1. On the day after dyeing, 5 droppers (approximately 0.15 ml) of the following sample was evenly applied to the dyed hair (those containing moisture were dried with a hair dryer), and then the hair was hung in a thermostatic chamber at a temperature of 25°C and a relative humidity of 80%. After one week, the hair was collected, and both the hair and the uncoated hair were washed with the evaluation shampoo and dried with a hair dryer. In the same manner as in Reference Example 1, the color difference ΔE was measured before and after the test using a spectrophotometer to determine the color difference, and the ΔE (relative evaluation) of the dyed hair coated with each sample was calculated when the ΔE of the dyed hair not coated with the sample (Comparative Example 1) was set to 1, and the fading inhibition effect was evaluated according to the following evaluation criteria. The results are shown in Table 2. The Hansen solubility parameter value of each sample and the HSP (Δd = 17.7 MPa) of the hair surface were also calculated using the computer software "HSPiP". 0.5 , δp=8.8MPa 0.5 , δh=1.0MPa 0.5 ) and the distance Ra from the

[0036] <Sample> PEG / PPG / Polybutylene Glycol-8 / 5 / 3 Glycerin (Wilbride S-753D: NOF Corp.) Cyclohexane-1,4-dicarboxylate bisethoxyglycol (NEOSOLUE AQULIO: manufactured by Nippon Fine Chemicals) PPG-10 methyl glucose (Macbiobride MG-10P: NOF Corp.) Methyl gluceth-10 (Macbiobride MG-10E: manufactured by NOF Corp.) PEG-8 (PEG-400: manufactured by Toho Chemical Industry Co., Ltd.) Glycerin (ECOCEROL: manufactured by ECOGREEN OLEOCHEMICALS)

[0037] <Evaluation criteria for anti-fading effect> The evaluation was made on the following five-point scale based on the ΔE (relative evaluation) value. A: Less than 0.8 B: 0.8 or more, less than 0.9 C: 0.9 or more, less than 1.0 D: 1.0 or more, less than 1.1 E: 1.1 or higher

[0038] [Table 2]

[0039] As shown in the above results, the δh value of the Hansen solubility parameter is 9MPa. 0.5 It was confirmed that fading of dyed hair (red color) was suppressed by treating it with a water-soluble compound with a δh of 9 MPa or less. 0.5 No fading inhibition effect was observed with PEG-8 or glycerin, which are larger than 100 μm.

[0040] Test Example 2 Dyed hair fading inhibition test (blue): Except for dyeing hair with the following dyeing agent (blue oxidation dye) instead of the oxidation dye (red) used in Test Example 1 and using the following water-soluble compound as a sample, the color difference ΔE and ΔE (relative evaluation) before and after the test were obtained in the same manner as in Test Example 1, and the fading inhibition effect was evaluated. The results are shown in Table 3.

[0041] <Dyeing agent> 1st agent: Fiole P Color Aqua Blue 7 (manufactured by Fiole Cosmetics) 2nd agent: Fiole BL Color OX 6% (manufactured by Fiole Cosmetics)

[0042] PEG / PPG / Polybutylene Glycol-8 / 5 / 3 Glycerin (Wilbride S-753D: NOF Corp.) Cyclohexane-1,4-dicarboxylate bisethoxyglycol (NEOSOLUE AQULIO: manufactured by Nippon Fine Chemicals) PPG-10 methyl glucose (Macbiobride MG-10P: NOF Corp.) PEG-8 (PEG-400: manufactured by Toho Chemical Industry Co., Ltd.) Glycerin (ECOCEROL: manufactured by ECOGREEN OLEOCHEMICALS)

[0043] [Table 3]

[0044] From the above results, it is found that the δh value of the Hansen solubility parameter is 9MPa. 0.5 It was confirmed that water-soluble compounds with δh of 9 MPa or less suppress the fading of dyed hair (blue). 0.5 No fading inhibition effect was observed with PEG-8 or glycerin, which are larger than 100 μm.

[0045] Formulation example 1: Styling mist (Component) (mass%) 1 Ethanol 20 2 (Ethyl betaine methacrylate / acrylates) copolymer 0.3 3 Stearyltrimonium chloride 0.3 4 Fragrance 0.1 5 PPG-10 methylglucose 0.01 6 Methylparaben 0.1 7 Distilled water remaining

[0046] (Manufacturing method) A: Add components (2) to (4) to component (1) and mix uniformly. B: Add components (5) and (6) to component (7) and mix uniformly. C: Mix A and B. D: The mixture was filled into a container with a push-type spray nozzle (spray nozzle diameter φ0.3 mm: non-aerosol container) to obtain a styling mist.

[0047] The styling hair mist of Formulation Example 1 was sprayed once onto dyed hair in a discoloration inhibition test in accordance with the methods described in Test Examples 1 and 2. The styling mist of Formulation Example 1 was found to have an excellent discoloration inhibition effect.

[0048] Formulation example 2: After-bath treatment (oil-in-water type) (Component) (mass%) 1 Isopropyl myristate 5.0 2 Dimethicone 5.0 3 Dicocodimonium chloride 0.1 4 Cetearyl Alcohol 1.0 5 Behenyl Alcohol 0.5 6. Phenoxyethanol 0.2 7. Propylene Glycol 5.0 8 Cyclohexane-1,4-dicarboxylic acid bisethoxyglycol 0.1 9. Stearyltrimonium chloride 0.5 10 Methylparaben 0.2 11 Sodium benzoate 0.1 12 Distilled water remaining 13 Ethanol 5.0

[0049] (Manufacturing method) A: Components (1) to (6) are mixed uniformly at 80°C. B: Components (7) to (11) are added to component (12) and mixed uniformly at 80°C. C: A and B are mixed and emulsified, then cooled to room temperature. D: Component (13) was added to C, mixed uniformly, and then filled into a dispenser container to obtain an after-bath treatment.

[0050] A discoloration inhibition test was conducted by applying approximately 0.1 g of the out-of-bath treatment of Formulation Example 2 evenly to dyed hair in accordance with the methods described in Test Examples 1 and 2. The out-of-bath treatment of Formulation Example 2 was found to have excellent discoloration inhibition effects.

[0051] Formulation example 3: Styling cream (oil-in-water type) (Component) (mass%) 1 Cetearyl Alcohol 5.0 2 Behenyl Alcohol 2.0 3. Dimethicone 2.0 4 PEG-10 hydrogenated castor oil 0.5 5 Dicocoyl ethyl hydroxyethylmonium methosulfate 0.2 6 Ethylhexyl methoxycinnamate 0.2 7 Methylgluceth - 10 10 8 Behentrimonium chloride 0.2 9 Methylparaben 0.1 10 Purified water remaining 11 Ethanol 10 12 (VP / VA) Copolymer 2.0

[0052] (Manufacturing method) A: Components (1) to (6) are mixed uniformly at 80°C. B: Components (7) to (9) are added to component (10) and mixed uniformly at 80°C. C: A and B are mixed and emulsified, then cooled to room temperature. D: Add component (12) to component (11) and mix uniformly. E: D was added to C, mixed uniformly, and then filled into a tube container to obtain a styling cream.

[0053] The styling cream of Formulation Example 3 was applied evenly in an amount of about 0.1 g to dyed hair in accordance with the methods described in Test Examples 1 and 2, and a discoloration inhibition test was conducted. The styling cream of Formulation Example 3 was found to have excellent discoloration inhibition effects. [Industrial Applicability]

[0054] INDUSTRIAL APPLICABILITY The present invention is useful as a composition for inhibiting fading and a method for inhibiting fading of dyed hair.

Claims

1. The δh in the Hansen solubility parameter is δh≦9 MPa ０．５ A composition for inhibiting fading of dyed hair, comprising as an active ingredient a water-soluble compound represented by the formula:

2. Water-soluble compound δd = 17.7 MPa ０．５ , δp=8.8MPa ０．５ , δh=1.0 MPa ０．５ The distance Ra of the Hansen solubility parameter from ０．５ 2. The composition for inhibiting fading of dyed hair according to claim 1,

3. 3. The composition for suppressing fading of dyed hair according to claim 1 or 2, wherein the water-soluble compound is a polyoxyalkylene polyhydric alcohol ether and / or a dicarboxylic acid ester.

4. 4. A composition for inhibiting fading of dyed hair according to claim 3, wherein the polyoxyalkylene polyhydric alcohol ether is one or more selected from the group consisting of polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether and polyoxyalkylene alkyl glucoside.

5. 5. The composition for inhibiting fading of dyed hair according to claim 4, wherein the polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether is PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin.

6. 5. The composition for inhibiting fading of dyed hair according to claim 4, wherein the polyoxyalkylene alkyl glucoside is PPG-10 methyl glucose and / or methyl gluceth-10.

7. 4. The composition for inhibiting fading of dyed hair according to claim 3, wherein the dicarboxylate ester is bis(ethoxydiglycol)cyclohexane-1,4-dicarboxylate.

8. The composition for suppressing fading of dyed hair according to claim 1 or 2, which suppresses fading under high humidity conditions.

9. The composition for inhibiting discoloration according to claim 1 or 2, which is for after-bath use.

10. The δh in the Hansen solubility parameter is δh≦9 MPa ０．５ A method for inhibiting fading of dyed hair, comprising applying to dyed hair a water-soluble compound represented by the formula:

11. Water-soluble compound δd = 17.7 MPa ０．５ , δp=8.8MPa ０．５ , δh=1.0 MPa ０．５ The distance Ra of the Hansen solubility parameter from ０．５ The method for inhibiting fading of dyed hair according to claim 10,

12. 12. The method for suppressing fading of dyed hair according to claim 10 or 11, wherein the water-soluble compound is a polyoxyalkylene polyhydric alcohol ether and / or a dicarboxylic acid ester.

13. 13. The method for inhibiting fading of dyed hair according to claim 12, wherein the polyoxyalkylene polyhydric alcohol ether is one or more selected from the group consisting of polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether and polyoxyalkylene alkyl glucoside.

14. The method for inhibiting fading of dyed hair according to claim 13, wherein the polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether is PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin.

15. The method for inhibiting fading of dyed hair according to claim 13, wherein the polyoxyalkylene alkyl glucoside is PPG-10 methyl glucose and / or methyl gluceth-10.

16. 13. The method for inhibiting fading of dyed hair according to claim 12, wherein the dicarboxylate ester is bisethoxydiglycol cyclohexane-1,4-dicarboxylate.

17. The method for suppressing fading of dyed hair according to claim 10 or 11, which suppresses fading under high humidity conditions.

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