Multi-component hair cosmetic

Abstract

To provide a multiple agent type hair cosmetic having good finger combing during washing away and having good emulsion stability and applicability.SOLUTION: There is provided a multiple agent type hair cosmetic which is applied to the hair in which the pH in the hair is 9 or more by dying or decoloring with a hair dyeing agent or a decoloring agent containing an alkaline agent and comprises a first agent and a second agent, wherein both the first agent and the second agent contain (A) one or more selected from citric acid, glycolic acid, or levulinic acid, (B) a higher alcohol having an alkyl chain having of 14 to 22 carbon atoms, and (C) one or more selected from trimethylammonium stearyl chloride and trimethylammonium behenyl chloride, both the first agent and the second agent have a content of the component (A) of 1 to 5 mass%, the first agent has a viscosity at 20°C of 20000 to 60,000 mPa s, and the second agent has a viscosity at 20°C of 65000 to 100000 mPa s.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a multi-agent hair cosmetic having good finger-through, emulsion stability and spreadability during rinsing.

Background Art

[0002] As a method for dyeing or bleaching hair, a hair dye or bleach prepared by mixing two or more agents at the time of use is widely used. The hair dye or bleach includes a hair dye that combines a first agent containing at least an alkali agent and an oxidation dye and a second agent containing hydrogen peroxide, or a two-agent bleach that uses a first agent containing at least an alkali agent and a second agent containing hydrogen peroxide, and a three-agent decolorizing and de-dyeing agent that combines a powder containing persulfate with the two-agent bleach are widely used. The alkali agent contained in such a hair dye or bleach raises the pH inside the hair, opens the cuticle on the hair surface, and penetrates into the hair interior. The hair dye or bleach that has penetrated into the hair oxidatively decomposes the melanin pigment possessed by the hair itself with an oxidizing agent to lighten the hair. In the case of a hair dye, the oxidation dye is oxidatively polymerized in the hair to form a pigment and fix it inside the hair, thereby dyeing the hair.

[0003] However, on the other hand, the alkali agent contained in the hair dye or bleach raises the pH of the hair and opens the cuticle on the hair surface, thereby damaging the hair surface and inner surface. Further, if an alkali agent remains in the hair, the damage to the hair surface and inner surface progresses further, and the finger-through of the hair deteriorates. For the purpose of caring for such hair, hair cosmetics that are rinsed off, such as hair rinses, hair treatments, hair packs, hair masks, etc., and hair cosmetics that are not rinsed off, such as hair oils, hair milks, hair creams, hair mists, etc. are generally used (Patent Document 1).

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] However, conventional technology does not adequately lower the pH inside the hair after treatment with hair dye or bleach, and damage reduction is still insufficient. As a result, the hair cuticles remain open, making it difficult to comb through the hair during rinsing, and there is room for improvement. In addition, when hair cosmetics contain a large amount of acidic substances in order to lower the pH inside the hair that has risen due to treatment with hair dye or bleach, the emulsification stability of the hair cosmetic cannot be maintained, and separation or water discharge may occur. Furthermore, as a result of the cuticles opening and being damaged by the alkaline agents in hair dye or bleach, internal substances of the hair leak out and the hair becomes highly absorbent. Therefore, even when applying hair cosmetics intended to reduce damage, this high absorbency makes it difficult to apply them evenly and without unevenness, and as a result, it is difficult for the hair cosmetics to fully exert their function. As a result, the function of lowering the pH inside the hair after treatment with hair dye or bleach is insufficient, and damage reduction is still insufficient in some cases.

[0006] In other words, the object of the present invention is to provide a multi-component hair cosmetic that lowers the pH of hair that has reached 9 or higher after dyeing or bleaching treatment with a hair dye or bleaching agent containing an alkaline agent, thereby improving the manageability of the hair during rinsing, and to provide a multi-component hair cosmetic that has good emulsification stability and applicability. [Means for solving the problem]

[0007] The present inventors, after diligent research to solve the above problems, have developed a multi-component hair cosmetic that is applied to hair whose pH has become 9 or higher due to a hair dyeing or bleaching treatment with a hair dye or bleaching agent containing an alkaline agent, The aforementioned multi-component hair cosmetic comprises a first component and a second component, Both the first agent and the second agent (A) One or more selected from citric acid, glycolic acid, or levulinic acid, (B) Higher alcohols having an alkyl chain with 14 to 22 carbon atoms, (C) One or more selected from stearyltrimethylammonium chloride or behenyltrimethylammonium chloride It contains, Both the first and second agents contain 1 to 5% by mass of component (A), The viscosity of the first agent at 20°C is 20,000 to 60,000 mPa·s. The viscosity of the second agent at 20°C is 65,000 to 100,000 mPa·s. We have found that a multi-component hair cosmetic composition characterized by the above solves the above problems, and have completed the present invention. [Effects of the Invention]

[0008] The present invention provides a multi-component hair cosmetic that offers good manageability during rinsing, emulsification stability, and application properties. [Modes for carrying out the invention]

[0009] The present invention will be described in detail below. Unless otherwise specified, all units indicating content are in mass percent.

[0010] The present invention relates to a multi-component hair cosmetic that is applied to hair whose pH has become 9 or higher by dyeing or bleaching with a hair dye or bleaching agent containing an alkaline agent, The aforementioned multi-component hair cosmetic comprises a first component and a second component, Both the first agent and the second agent (A) One or more selected from citric acid, glycolic acid, or levulinic acid, (B) Higher alcohols having an alkyl chain with 14 to 22 carbon atoms, (C) One or more selected from stearyltrimethylammonium chloride or behenyltrimethylammonium chloride It contains, In both the first agent and the second agent, the content of the component (A) is 1 to 5%, the viscosity of the first agent at 20°C is 20,000 to 60,000 mPa·s, the viscosity of the second agent at 20°C is 65,000 to 100,000 mPa·s which is a multi-agent type hair cosmetic characterized by the above.

[0011] The multi-agent type hair cosmetic in the present invention is a multi-agent type of two-agent type or more including at least a first agent and a second agent, and by doing so, the pH in the hair can be effectively lowered compared to a single-agent type hair cosmetic.

[0012] In the multi-agent type hair cosmetic in the present invention, by setting the viscosity of the first agent at 20°C to 20,000 to 60,000 mPa·s, it becomes easy to uniformly apply to the hair, and it becomes difficult for the first agent to drip from the hair. Also, by setting the viscosity of the second agent at 20°C to 65,000 to 100,000 mPa·s, the second agent easily mixes with the first agent on the hair to which the first agent is applied, and the mixed first agent and second agent are firmly held on the hair, so the pH in the hair can be further lowered.

[0013] The multi-agent type hair cosmetic in the present invention lowers the pH in the hair that has become 9 or more due to hair dyeing treatment or bleaching treatment with a hair dye or bleaching agent containing an alkaline agent, thereby adjusting the open cuticle on the hair surface and improving the feel when passing fingers through the hair during washing.

[0014] [[ID=二十一]] [[ID=二十二]]The first agent of the multi-agent type hair cosmetic in the present invention will be described.

[0015] The first agent of the present invention contains one or more selected from (A) citric acid, glycolic acid, or levulinic acid from the viewpoint of the feel when passing fingers through the hair during washing.

[0016] From the viewpoint of improving the feel when passing fingers through the hair during washing, citric acid is preferable as the component (A) used in the first agent of the present invention.

[0017] The content of the component (A) used in the first agent of the present invention is preferably 1 to 5%, more preferably 1.5 to 5%, and still more preferably 2 to 4%. When the component (A) is less than 1%, the smoothness during rinsing becomes insufficient. When the component (A) exceeds 5%, the emulsion stability deteriorates.

[0018] From the viewpoint of emulsion stability, the first agent of the present invention contains (B) a higher alcohol having an alkyl chain with 14 to 22 carbon atoms.

[0019] The component (B) used in the first agent of the present invention is not particularly limited. For example, myristyl alcohol, cetyl alcohol, stearyl alcohol, arachyl alcohol, behenyl alcohol, 2-decyltetradecanol, etc. can be mentioned, and one or more of these can be contained.

[0020] Among the component (B) used in the first agent of the present invention, from the viewpoint of improving emulsion stability, cetyl alcohol and stearyl alcohol are preferred.

[0021] The content of the component (B) used in the first agent of the present invention is not particularly limited, but is preferably 3.5 to 6%, more preferably 5 to 6%. When the component (B) is less than 3.5%, the emulsion stability may deteriorate. When the component (B) exceeds 6%, the viscosity of the first agent becomes high, the pH in the hair is difficult to decrease, and the smoothness during rinsing may deteriorate.

[0022] From the viewpoint of emulsion stability, the first agent of the present invention contains one or more selected from (C) stearyl trimethyl ammonium chloride or behenyl trimethyl ammonium chloride.

[0023] The content of the component (C) used in the first agent of the present invention is not particularly limited, but is preferably 0.8 to 4.8%, more preferably 1.6 to 3.2%. When the content of the component (C) is less than 0.8% or exceeds 4.8%, the emulsion stability may deteriorate.

[0024] In addition to the essential components, the first agent of the present invention may contain, to the extent that it does not impair the effect, at least one of various components commonly used in cosmetics, quasi-drugs, pharmaceuticals, etc., such as oily components other than component (B), surfactants other than component (C), water-soluble polymers, humectants, chelating agents, protein derivatives, hydrolyzed proteins, stabilizers, antioxidants, plant extracts, vitamins, preservatives, dyes, pigments, powders, UV absorbers, fragrances, etc. However, it is not limited to these examples.

[0025] The viscosity of the first agent of the present invention at 20°C is 20,000 to 60,000 mPa·s. If the viscosity of the first agent is less than 20,000 mPa·s, the emulsification stability will be poor. If the viscosity of the first agent exceeds 60,000 mPa·s, it will be difficult to mix it with the second agent on the hair.

[0026] The viscosity of the first component of the present invention at 20°C was measured by filling a 140g sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) with 120g of the first component, which was prepared by a conventional method, and allowing it to stand at 20°C for 1 day to regulate the temperature. The viscosity was then measured using a Type B viscometer (Model: Digital Viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) with a No. 4 rotor for 2 minutes at a rotation speed of 3 rpm.

[0027] The pH of the first agent of the present invention at 20°C is not particularly limited, but is preferably 1.5 to 5.

[0028] The pH of the first agent of the present invention under conditions of 20°C was measured using a glass electrode type hydrogen ion concentration indicator (F-71, manufactured by Horiba, Ltd.) after the hair cosmetic composition, prepared by a conventional method, was allowed to stand at 20°C for one day to adjust the temperature.

[0029] The dosage form of the first agent in the present invention can be, for example, a cream, lotion, or gel.

[0030] The second component of the multi-component hair cosmetic composition in this invention will now be described.

[0031] The second agent of the present invention contains (A) one or more selected from citric acid, glycolic acid, or levulinic acid, from the viewpoint of how easily the fingers can run through the hair when rinsing.

[0032] The component (A) used in the second agent of the present invention is preferably citric acid, from the viewpoint of improving the smoothness of the hair when rinsing.

[0033] The content of component (A) used in the second agent of the present invention is preferably 1 to 5%, more preferably 1.5 to 5%, and more preferably 2 to 4%. If the content of component (A) is less than 1%, the hair will not be smooth enough to run fingers through when rinsing. If the content of component (A) exceeds 5%, the emulsification stability will be poor.

[0034] The second agent of the present invention contains (B) a higher alcohol having an alkyl chain with 14 to 22 carbon atoms, from the viewpoint of emulsification stability.

[0035] The component (B) used in the second agent of the present invention is not particularly limited, but examples include myristyl alcohol, cetanol, stearyl alcohol, arachidyl alcohol, behenyl alcohol, 2-decyltetradecanol, and one or more of these may be included.

[0036] Of the components (B) used in the second agent of the present invention, cetanol and stearyl alcohol are preferred from the viewpoint of improving emulsification stability.

[0037] The content of component (B) used in the second agent of the present invention is not particularly limited, but is preferably 6.5 to 8.5%, more preferably 6.5 to 7.5%. If the content of component (B) is less than 6.5%, even if the second agent is applied after the first agent is applied, the adhesion to the hair may not be sufficiently exhibited. If the content of component (B) exceeds 8.5%, the application may be poor.

[0038] The second agent of the present invention contains one or more selected from (C) stearyltrimethylammonium chloride or behenyltrimethylammonium chloride, from the viewpoint of emulsification stability.

[0039] The content of component (C) used in the second agent of the present invention is not particularly limited, but is preferably 0.8 to 4.8%, more preferably 1.6 to 3.2%. If the content of component (C) is less than 0.8% or more than 4.8%, the emulsification stability may deteriorate.

[0040] In addition to the essential components, the second agent of the present invention may contain, to the extent that it does not impair the effect, at least one of various components commonly used in cosmetics, quasi-drugs, pharmaceuticals, etc., such as oily components other than component (B), surfactants other than component (C), water-soluble polymers, humectants, chelating agents, protein derivatives, hydrolyzed proteins, stabilizers, antioxidants, plant extracts, vitamins, preservatives, dyes, pigments, powders, UV absorbers, fragrances, etc. However, it is not limited to these examples.

[0041] The viscosity of the second component of the present invention at 20°C is 65,000 to 100,000 mPa·s. If the viscosity of the second component is less than 65,000 mPa·s, sufficient adhesion cannot be achieved even if the second component is applied after the first component has been applied. If the viscosity of the second component exceeds 100,000 mPa·s, the application performance will be poor.

[0042] The viscosity of the second component of the present invention at 20°C was measured by filling a 140g sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) with 120g of the second component, which was prepared by a conventional method, and allowing it to stand at 20°C for 1 day to regulate the temperature. The viscosity was then measured using a Type B viscometer (Model: Digital Viscometer TVB-10M, manufactured by Toki Sangyo Co., Ltd.) with a No. 4 rotor for 2 minutes at a rotation speed of 3 rpm.

[0043] The pH of the second agent of the present invention at 20°C is not particularly limited, but is preferably 1.5 to 5.

[0044] The pH of the second agent of the present invention at 20°C was measured using a glass electrode type hydrogen ion concentration indicator (F-71, manufactured by Horiba, Ltd.) after the second agent, prepared by a conventional method, was allowed to stand at 20°C for one day to regulate the temperature.

[0045] The dosage form of the second component in the present invention can be, for example, a cream, lotion, or gel.

[0046] In this invention, the pH inside the hair is determined by freezing and grinding 1 g of dried hair to a thickness of 1 mm or less using liquid nitrogen, immersing it in 100 ml of distilled water at 50°C for 10 minutes, cooling it to 25°C, and then measuring the pH of the resulting aqueous solution.

[0047] The hair treatment method for the multi-component hair cosmetic in the present invention is a hair treatment method for the multi-component hair cosmetic that is applied to hair whose pH has become 9 or higher by dyeing or bleaching with a hair dye or bleaching agent containing an alkaline agent, The aforementioned multi-component hair cosmetic comprises a first component and a second component, Both the first agent and the second agent (A) One or more selected from citric acid, glycolic acid, or levulinic acid, (B) Higher alcohols having an alkyl chain with 14 to 22 carbon atoms, (C) One or more selected from stearyltrimethylammonium chloride or behenyltrimethylammonium chloride It contains, Both the first and second agents contain 1 to 5% by mass of component (A), The viscosity of the first agent at 20°C is 20,000 to 60,000 mPa·s. The viscosity of the second agent at 20°C is 65,000 to 100,000 mPa·s, The process involves applying a hair dye or bleach containing an alkaline agent to the hair, leaving it on, rinsing it off, and then applying the first component of a multi-component hair cosmetic to the hair while it is still wet immediately after the dyeing or bleaching treatment. Next, without rinsing off the first agent, the second agent of the multi-component hair cosmetic is applied to the hair. After applying the first agent and the second agent, the process of washing them off, The process of drying hair, This is a hair treatment method using a multi-component hair cosmetic consisting of the following:

[0048] In the present invention, the hair treated with a hair dye or bleaching agent in the hair treatment method refers to hair that has been treated with a hair dye or bleaching agent, left for a predetermined time, and then washed off with shampoo.

[0049] In the present invention, the drying of hair in the hair treatment method refers to drying the hair using a hair dryer, natural drying, or the like. [Examples]

[0050] The present invention will be described in more detail below with reference to examples, but these examples are not intended to limit the present invention in any way.

[0051] In the evaluation tests described herein, the ingredients and their contents in the multi-component hair cosmetic were varied during the tests. All units indicating the content of each ingredient are in mass%, and these were prepared by conventional methods.

[0052] In the evaluation test methods described herein, "applicability" and "smoothness when rinsing" were evaluated using the following methods.

[0053] The bleaching agent compositions listed in Table 1 were mixed in a ratio of 1st agent:2nd agent:3rd agent = 2:3:1, and 200g was uniformly applied to a wig (100% human black hair, Queen Cut No. 775N, manufactured by Beaulux Co., Ltd.). After application, it was left for 30 minutes, then rinsed thoroughly with water, and washed with shampoo (GREEN BOTTLE Botanical Rich Shampoo Luxury Bergamot Scent, manufactured by Dariya Co., Ltd.). 15g of the first agent of the multi-component hair cosmetic obtained in the examples and comparative examples was uniformly applied to the wet hair after washing, and the "applicability of the first agent" was evaluated by sensory evaluation according to the evaluation criteria below. Subsequently, without rinsing, the second agent of the multi-component hair cosmetic obtained in the examples and comparative examples was applied to the hair, and the "applicability of the second agent" was evaluated by sensory evaluation according to the evaluation criteria below. After that, the first and second agents were rinsed off, and the "ease of combing during rinsing" was evaluated by sensory evaluation according to the evaluation criteria below. Furthermore, the pH within the hair of a wig (100% human black hair, Queen Cut No. 775N, manufactured by Beaulux Co., Ltd.) treated with the aforementioned bleaching agent composition was 9.6.

[0054] [Table 1]

[0055] "Applicability" <Evaluation Criteria> ◎: More than 11 out of 15 people felt that it was easy to apply. ○: Between 5 and 10 out of 15 people felt that it had good applicability. ×: 4 out of 15 people felt that the application was good.

[0056] "How easily your fingers can run through your hair when rinsing" <Evaluation Criteria> ◎: More than 12 out of 15 people felt that their hair was easier to comb through when rinsing. ○: Between 8 and 11 out of 15 people felt that their fingers glided through their hair smoothly when rinsing. △: Between 4 and 7 out of 15 people felt that their fingers glided through their hair easily when rinsing. ×: Three or fewer out of 15 people felt that their fingers glided through their hair easily when rinsing.

[0057] In the evaluation test methods described herein, "emulsification stability" was determined by visually inspecting the appearance of the first and second components of the multi-component hair cosmetic obtained in the examples and comparative examples. This was done by filling 120g of each component into a 140g sample bottle (Food 140: manufactured by Daiichi Glass Co., Ltd.) and leaving it to stand in a constant temperature bath at 40°C for 6 months, according to the evaluation criteria below.

[0058] "Emulsification stability" <Evaluation Criteria> ◎: No changes were observed in the hair cosmetic product after 6 months. ○: A very small amount of water was observed in the hair cosmetic product after 6 months. ×: Obvious separation or watery discharge was observed in the hair cosmetic product within 6 months.

[0059] [Table 2]

[0060] [Table 3]

[0061] [Table 4]

[0062] Examples 1 to 25, shown in Tables 2 to 4, yielded favorable results regarding "smoothness when rinsing," "emulsification stability," and "applicability."

[0063] The following describes 26 examples of a multi-component hair cosmetic.

[0064] The multi-component hair cosmetic obtained in Example 26 was subjected to the same evaluation tests as in Examples 1 to 25, and good results were obtained regarding "ease of handling during rinsing," "emulsification stability," and "applicability."

[0065] <Example 26> Component Content (mass%) First agent (A) Citric acid 3.00 (B) Cetanol 2.00 (B) Stearyl alcohol 3.00 (C) Stearyltrimethylammonium chloride 0.70 (C) Behenyltrimethylammonium chloride 1.28 Methylpolysiloxane (10mm 2 / s) 4.00 Methylpolysiloxane (350 mm 2 / s) 6.00 Highly polymerized methylpolysiloxane (1) (10,000 mm 2 / s) 4.00 Squalane 0.01 Argania spinosa kernel oil 0.01 1,3-Butylene glycol 7.00 Methyl parahydroxybenzoate 0.20 Fragrance 0.20 Purified water 71.60 Total 100.00 pH (20℃): 2.00 Viscosity (20℃): 47,400mPa·s Second drug (A) Citric acid 3.00 (B) Cetanol 7.50 (C) Stearyltrimethylammonium chloride 3.15 Methylpolysiloxane (10mm 2 / s) 5.00 Methylpolysiloxane (350 mm 2 / s) 2.00 Highly polymerized methylpolysiloxane (1) (10,000 mm 2 / s) 2.00 Concentrated glycerin 4.00 Liquid Isoparaffin 3.00 Shea butter 0.01 1,3-Butylene glycol 7.00 Methyl parahydroxybenzoate 0.20 Fragrance 0.20 Isostearoyl hydrolyzed collagen aminomethylpropanediol salt 0.01 Hydrolyzed silk solution 0.01 Purified water 62.92 Total 100.00 pH (20℃): 2.08 Viscosity (20℃): 73,500mPa·s [Industrial applicability]

[0066] The present invention provides a multi-component hair cosmetic that offers good manageability during rinsing, emulsification stability, and application properties.

Claims

1. A multi-component hair cosmetic applied to hair whose pH has become 9 or higher due to dyeing or bleaching treatment with a hair dye or bleaching agent containing an alkaline agent, The aforementioned multi-component hair cosmetic comprises a first component and a second component, Both the first agent and the second agent (A) One or more selected from citric acid, glycolic acid, or levulinic acid, (B) Higher alcohols having an alkyl chain with 14 to 22 carbon atoms, (C) One or more selected from stearyltrimethylammonium chloride or behenyltrimethylammonium chloride It contains, Both the first agent and the second agent contain 1 to 5% by mass of component (A), The viscosity of the first agent at 20°C is 20,000 to 60,000 mPa·s. The viscosity of the second agent at 20°C is 65,000 to 100,000 mPa·s. A multi-component hair cosmetic characterized by the following features.

2. A hair treatment method for a multi-component hair cosmetic, applied to hair whose pH has become 9 or higher by dyeing or bleaching with a hair dye or bleaching agent containing an alkaline agent, The aforementioned multi-component hair cosmetic comprises a first component and a second component, Both the first agent and the second agent (A) One or more selected from citric acid, glycolic acid, or levulinic acid, (B) Higher alcohols having an alkyl chain with 14 to 22 carbon atoms, (C) One or more selected from stearyltrimethylammonium chloride or behenyltrimethylammonium chloride It contains, Both the first agent and the second agent contain 1 to 5% by mass of component (A), The viscosity of the first agent at 20°C is 20,000 to 60,000 mPa·s. The viscosity of the second agent at 20°C is 65,000 to 100,000 mPa·s, The process involves applying a hair dye or bleach containing an alkaline agent to the hair, leaving it on, rinsing it off, and then applying the first component of a multi-component hair cosmetic to the hair while it is still wet after the dyeing or bleaching treatment. Next, without rinsing off the first agent, the second agent of the multi-component hair cosmetic is applied to the hair. After applying the first agent and the second agent, a step of washing them off, The process of drying hair, A hair treatment method for a multi-component hair cosmetic consisting of the following.

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