JP5058452B2 - Hair bleach and oxidative hair dye - Google Patents

Description

  The present invention relates to a hair bleaching agent and an oxidative hair dye. Specifically, it has an appropriate viscosity at the time of use, has excellent spreadability at the time of treatment, prevents dripping, prevents damage to the hair due to the treatment, and is excellent in hair bleaching and oxidation after treatment. It relates to hair dyes.

  Currently, hair bleaching agents are excellent in depigmenting effects, so two-component hair bleaching agents that mix a first agent containing an alkaline agent and a second agent containing an oxidizing agent at the time of use become the mainstream. ing. In addition, since the hair dye has a sustained effect and can be dyed in a lighter color tone than the original hair, the first agent containing the alkaline agent and the oxidation dye, and the second agent containing the oxidizing agent, Two-component oxidative hair dyes that are mixed at the time of use are the mainstream.

  In the two-part hair bleaching agent, an alkaline agent and hydrogen peroxide act to generate oxygen during use, thereby decomposing melanin pigment in the hair and bleaching the hair. In the two-component oxidative hair dye, the generated oxygen oxidizes and decomposes the melanin pigment in the hair, and the hair is dyed by oxidative polymerization of the oxidative dye in the hair.

  In addition to the action of hydrogen peroxide, the alkaline agent in the first agent has an effect of improving the hair dyeing effect by swelling the cuticle on the hair surface and allowing the dye to penetrate into the hair. However, keratin protein in hair has the problem that the cystine bond is easily oxidized to cysteic acid by the action of hydrogen peroxide or is easily decomposed by an alkaline agent. Have.

  In order to solve such problems, a creamy hair dye first composition containing an oil component and a surfactant (see Patent Document 1), and an oxidized hair dye containing cystine or a derivative thereof. The 1st agent for use (refer patent document 2) etc. are reported. However, in these first agents, the hair protection effect differs depending on the oily component and surfactant used, and the composition component of the second agent used together, and the dyeing properties after the treatment are also affected, which are still satisfactory. is not.

  On the other hand, during treatment, especially during self-use, spreadability and prevention of dripping are important techniques. As such a technique, a hair dye composition comprising a first agent having a specific viscosity and a second agent having a specific viscosity (see Patent Document 3), alkyl polyglycoside, aliphatic alcohol and polyoxyethylene alkyl ether are contained. Oxidative hair dyes (see Patent Document 4) and the like have been reported. However, these techniques have a problem that the hair damage suppressing effect is not sufficient.

JP-A-1-165514 JP 2002-370948 A JP 2004-83454 A JP 2004-269466 A

  The present invention was made in view of the above prior art, has an appropriate viscosity at the time of use, has excellent spreadability at the time of treatment, prevents dripping, and prevents damage to the hair due to the treatment, It is an object of the present invention to provide a hair bleaching agent and an oxidative hair dye that are excellent in the texture of the hair after the treatment.

That is, the present invention
[1] (a) polyoxyethylene hydrogenated castor oil, (b) cysteine and / or a salt thereof, and (c) (c1) ascorbic acid and / or an ascorbic acid derivative and (c2) tocopherol and / or a tocopherol derivative A hair bleaching agent or an oxidative hair dye characterized by containing, and [2] the content of the component (b) is 0 . The hair bleaching agent or oxidative hair dye according to [1], characterized in that the hair bleaching agent is 01 to 5% by weight,
About.

  The hair bleaching agent of the present invention has an appropriate viscosity at the time of use, has excellent spreadability at the time of treatment, prevents dripping, prevents damage to the hair due to the treatment, and has a good texture after the treatment. Can be. In addition, the oxidative hair dye of the present invention has excellent spreadability at the time of treatment, prevents dripping, prevents damage to the hair due to the treatment, and improves the feel of the hair after the treatment. Excellent in properties.

The hair bleaching agent and oxidative hair dye of the present invention are composed of (a) polyoxyethylene hydrogenated castor oil, (b) cysteine and / or a salt thereof, and (c) ascorbic acid, an ascorbic acid derivative, tocopherol, and a tocopherol derivative. 1 or more types chosen from the group which consists of. In addition, each said component in this invention is the 1st agent or 2nd of the multi-component hair bleaching agent or oxidative hair dye which consists of the 1st agent containing an alkaline agent and the 2nd agent containing an oxidizing agent. It is contained in one or both of the agents.

  The number of moles of ethylene oxide added in the polyoxyethylene hydrogenated castor oil of component (a) used is not particularly limited, but from the viewpoint of usability such as extensibility at the time of treatment and hair protecting effect, the number of moles added is 5 to 100. Is preferred, and an added mole number of 10 to 50 is more preferred.

  The content of the component (a) is not particularly limited as long as the effect of the present invention is exhibited, but from the viewpoint of the hair protection effect, 0.1% by weight or more is preferable in the decoloring agent or hair dye, and 1% by weight. The above is more preferable. Further, from the viewpoint of usability such as spreadability at the time of treatment, it is preferably 10% by weight or less, more preferably 8% by weight or less in the decoloring agent or hair dye. From these, the preferable content is 0.1 to 10% by weight, and more preferably 1 to 8% by weight.

(B) Ingredients, from the viewpoint of antioxidation power of hair, a cysteine. Moreover, the salt of cysteine is not particularly limited, and examples thereof include acid salts or alkali salts such as hydrochloric acid, sulfuric acid, nitric acid, acetic acid, sodium, and potassium.

These components (b) can be used alone or in appropriate combination of two or more. The content of component (b), from the viewpoint of the texture of the hair the hair damage prevention effect and hair, in bleach or hair dye, and at least 0.01 wt%, more preferably at least 0.1 wt% . Further, from the viewpoint of storage stability and decolorization / hair dyeing power, it is 5% by weight or less , and more preferably 3% by weight or less in the decoloring agent or hair dye. These, including Yuryou is 0.01 to 5 wt%, more preferably 0.1 to 3 wt%.

As the component (c), ascorbic acid, ascorbic acid derivatives, tocopherols, and tocopherol derivatives are used.

  Ascorbic acid derivatives that can be used include, for example, sodium ascorbate, potassium ascorbate, calcium ascorbate, ammonium ascorbate, erythorbic acid, sodium erythorbate, magnesium ascorbate phosphate, ascorbyl citrate, ascorbyl acetate, tartaric acid Examples include ascorbyl, ascorbyl palmitate, ascorbyl stearate, and ascorbyl glucoside. Examples of the tocopherol derivative include tocopherol acetate, tocopherol nicotinate, vitamin E succinate, vitamin E linolenate and the like.

These component (c), in view of the damaging effect of preventing hair, (c1) and ascorbic acid and / or ascorbic acid derivative ingredient, together with tocopherol and / or tocopherol derivative of component (c2). Further, the content of the component (c) is not particularly limited as long as the effect of the present invention is exhibited, but from the viewpoint of hair damage prevention effect and hair texture, 0.01% by weight in the decoloring agent or hair dye. The above is preferable, and 0.1% by weight or more is more preferable. Further, from the viewpoint of storage stability and decolorization / hair dyeing power, 5% by weight or less is preferable and 3% by weight or less is more preferable in the decoloring agent or hair dye. Therefore, the preferable content is 0.01 to 5% by weight, and more preferably 0.1 to 3% by weight.

  Each component described above is contained in either one or both of the first agent and the second agent, the first agent contains an alkali agent, and the second agent contains an oxidizing agent.

  The alkali agent to be used is not particularly limited, and examples thereof include inorganic amines such as ammonia, ammonium carbonate, and ammonium bicarbonate; isopropanolamine, monoethanolamine, diethanolamine, triethanolamine, 2-amino-2-methyl-1-propanol And organic amines. Among these, from the viewpoint of suppressing the pungent odor of the alkaline agent, it is preferable to use an organic amine, more preferably isopropanolamine or monoethanolamine, and still more preferably monoethanolamine.

  These alkali agents can be used alone or in appropriate combination of two or more. Further, the content is not particularly limited, but from the viewpoint of decolorization and hair dyeing power, it is preferably 0.01% by weight or more, more preferably 0.1% by weight or more in the decoloring agent or hair dye. Moreover, from a viewpoint of the hair damage prevention effect, 20 weight% or less is preferable in a decoloring agent or a hair dye, and 10 weight% or less is more preferable. From these, preferable content is 0.01 to 20 weight%, More preferably, it is 0.1 to 10 weight%.

  When the present invention is used as an oxidation hair dye, the first agent contains an oxidation dye in addition to an alkali agent. The oxidation dye used is not particularly limited as long as it is a dye used for oxidation hair dyes such as oxidation dye precursors and couplers. For example, phenylenediamines, toluylenediamines, N-phenylphenylenediamines, amino Examples include oxidative dye precursors such as phenols, aminonitrophenols, diphenylamines, diaminophenylamines, and diaminopyridines; couplers such as resorcin, m-aminophenol, m-phenylenediamine, catechol, and pyrogallol. In addition, content of oxidation dye should just be about 0.01 to 10 weight% in the 1st agent from viewpoints of safety, such as hair dyeing property and skin irritation.

  In addition to the components described above, the first agent may be an oily component, a higher alcohol, a surfactant, a polyhydric alcohol, an antioxidant, a pH stabilizer, a chelating agent as long as the effects of the present invention are not impaired. , Thickeners, moisturizers, animal and plant extracts, anti-inflammatory agents, vitamins, UV absorbers, fragrances, colorants, water, and the like can be appropriately contained according to the purpose.

  The oxidizing agent contained in the second agent is not particularly limited as long as it exhibits an oxidizing action, and examples thereof include hydrogen peroxide, urea peroxide, and alkali metal bromate. Of these, hydrogen peroxide is preferably used, and is usually used as a hydrogen peroxide solution.

  The content of the oxidizing agent is preferably 0.1 to 10% by weight, and preferably 0.5 to 6% by weight in the second agent, from the viewpoint of exhibiting an oxidizing action and suppressing hair damage. More preferred.

  In addition to the above-mentioned oxidizing agent, the second agent includes oily components, higher alcohols, surfactants, polyhydric alcohols, antioxidants, pH stabilizers, chelating agents, thickeners, moisturizers, animal and plant extracts, Anti-inflammatory agents, vitamins, ultraviolet absorbers, fragrances, colorants, water and the like can be appropriately contained depending on the purpose.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not limited only to this Example. The content represents “% by weight” unless otherwise specified. Further, the number of moles of polyoxyethylene added is, for example, expressed as polyoxyethylene (20) hydrogenated castor oil when the number of moles added is 20 moles.

(Sample preparation)
According to the composition described in Table 1 and Table 2, the first oxidation hair dye was prepared by a conventional method. Moreover, the oxidative hair dye 2nd agent used the thing of the following composition, and used for each following evaluation test.
<Second agent for oxidative hair dye>
Decaglyceryl monolaurate 0.4
Polyoxyethylene (20) hydrogenated castor oil 0.2
Polyoxyethylene (40) hydrogenated castor oil 0.2
Cetanol 1.2
Propylene glycol 2.0
35% hydrogen peroxide solution 16.5
60% hydroxyethanediphosphonic acid 0.2
85% phosphoric acid 0.01
Purified water balance
Total 100.0

(Test Example 1: Usability evaluation)
1st agent of each Example or each comparative example described in Table 1 and Table 2, and the said 2nd agent are each mixed by the weight ratio 1: 1, respectively, and a 30% gray hair mixing person who is 3g in weight and 10cm in length. After uniformly applying to the hair bundle, one end of the hair bundle was fixed in an atmosphere of 30 ° C., suspended vertically, and left for 20 minutes. At this time, the spreadability at the time of application and the dripping after leaving for 20 minutes were evaluated based on the following evaluation criteria. The results are shown in Tables 1 and 2.

<Evaluation criteria for spreadability>
○: Elongation during application is good △: Elongation during application is slightly good ×: Inferior to elongation during application

<Evaluation of dripping>
○: The drug solution is uniformly attached to the hair and there is no dripping. Δ: The drug solution concentrates on the hair tip and is about to dripping. ×: There is dripping.

(Test Example 2: Evaluation after hair dyeing)
The hair bundle after the evaluation was washed with water and then dried with a dryer, and the dyeability of the hair bundle and the texture of the hair were each evaluated by 10 professional panelists according to the following evaluation criteria. The results are shown in Tables 1 and 2.

<Evaluation criteria for hair dyeability>
○: 8 or more of 10 responded that there was no spot and the hair was uniformly dyed.
Δ: 4 to 7 out of 10 responded that there was no spots and the hair was uniformly dyed.
X: 3 or less out of 10 responded that they were uniformly dyed without spots.

<Evaluation criteria for hair texture>
○: 8 or more out of 10 responded that there was no squeaky feeling and excellent texture.
Δ: 4 to 7 out of 10 responded that there was no squeaky feeling and excellent texture.
×: 3 or less of 10 people answered that there was no squeaky feeling and excellent texture.

(Test Example 3; Evaluation of hair damage prevention effect)
After the evaluation of Test Example 2, the state of the hair bundle was observed with an electron microscope (magnification 3000 times), and the degree of damage to the hair cuticle was evaluated according to the following evaluation criteria. The results are shown in Tables 1 and 2.

<Evaluation criteria>
○: Almost no damage was observed.
Δ: Damages such as bulges, cracks, and peeling were slightly observed in the hair cuticle.
X: Damages such as bumps, cracks, and peeling were clearly observed in the hair cuticle.

  From the result of Tables 1-2, the oxidative hair dye of this invention is excellent in the extensibility at the time of a treatment, and can prevent dripping. In addition, it can be seen that the hair after the treatment is excellent in hair dyeing property, has no squeaky feeling, has a good texture, and can prevent damage to the hair due to the treatment.

Hereinafter, formulation examples of the hair bleaching agent and the oxidative hair dye of the present invention will be shown. The blending amount represents “% by weight”.
(Formulation Example 1: Oxidative hair dye)
<First Agent>
Polyoxyethylene (10) hydrogenated castor oil 7.0
Polyoxyethylene (40) cetyl ether 2.5
28% stearyltrimethylammonium chloride 3.0
Dimethylpolysiloxane 1.0
Monoethanolamine 1.0
28% ammonia water 7.0
Ammonium carbonate 0.8
Paraphenylenediamine 0.4
Resorcin 0.35
2,4-Diaminophenoxyethanol hydrochloride 0.03
Metaaminophenol 0.05
Cetyl alcohol 3.0
Oleyl alcohol 2.0
L-cysteine hydrochloride 0.5
L-Arginine 0.2
Sodium L-ascorbate 0.5
dl-α-tocopherol 0.2
Edetate disodium 0.2
Purified water balance
Total 100.0
<Second agent>
Decaglyceryl monolaurate 0.4
Polyoxyethylene (20) hydrogenated castor oil 0.2
Polyoxyethylene (40) hydrogenated castor oil 0.2
Cetanol 1.2
Propylene glycol 2.0
35% hydrogen peroxide solution 16.5
60% hydroxyethanediphosphonic acid 0.2
85% phosphoric acid 0.01
Purified water balance
Total 100.0

(Formulation Example 2: Oxidative hair dye)
<First Agent>
Polyoxyethylene (40) hydrogenated castor oil 4.0
Polyoxyethylene (40) cetyl ether 2.0
28% stearyltrimethylammonium chloride 7.0
Isopropanolamine 6.0
Paraphenylenediamine 0.3
Resorcinol 0.25
Metaaminophenol 0.05
Stearyl alcohol 4.0
Oleyl alcohol 3.0
L-cysteine hydrochloride 0.5
Sodium L-glutamate 0.1
Sodium elsorbate 0.5
dl-α-tocopherol 0.1
Edetate disodium 0.2
Purified water balance
Total 100.0
<Second agent>
Decaglyceryl monolaurate 0.4
Polyoxyethylene (20) hydrogenated castor oil 0.2
Polyoxyethylene (40) hydrogenated castor oil 0.2
Cetanol 1.2
Propylene glycol 2.0
35% hydrogen peroxide solution 16.5
60% hydroxyethanediphosphonic acid 0.2
L-glutamic acid 0.1
85% phosphoric acid 0.01
Purified water balance
Total 100.0

(Formulation example 3; hair bleaching agent)
<First Agent>
Polyoxyethylene (10) hydrogenated castor oil 7.0
Polyoxyethylene (40) cetyl ether 2.5
28% stearyltrimethylammonium chloride 3.0
Monoethanolamine 2.0
28% ammonia water 7.0
Cetyl alcohol 3.0
Oleyl alcohol 2.0
L-cysteine hydrochloride 0.5
L-proline 0.2
Sodium L-ascorbate 0.5
dl-α-tocopherol 0.2
Edetate disodium 0.2
Purified water balance
Total 100.0
<Second agent>
Decaglyceryl monolaurate 0.4
Polyoxyethylene (20) hydrogenated castor oil 0.2
Polyoxyethylene (40) hydrogenated castor oil 0.2
Cetanol 1.2
Propylene glycol 2.0
35% hydrogen peroxide solution 16.5
60% hydroxyethanediphosphonic acid 0.2
Dl-α-tocopherol acetate 0.1
85% phosphoric acid 0.01
Purified water balance
Total 100.0

(Formulation example 4; hair bleaching agent)
<First Agent>
Polyoxyethylene (40) hydrogenated castor oil 4.0
Polyoxyethylene (40) cetyl ether 2.0
28% stearyltrimethylammonium chloride 7.0
Dimethylpolysiloxane 0.5
Isopropanolamine 6.0
Stearyl alcohol 4.0
Oleyl alcohol 3.0
L-cysteine hydrochloride 0.5
L-proline 0.05
L-glutamic acid 0.05
L-Arginine 0.05
Sodium L-ascorbate 0.5
Dl-α-tocopherol acetate 0.1
Edetate disodium 0.2
Purified water balance
Total 100.0
<Second agent>
Decaglyceryl monolaurate 0.4
Polyoxyethylene (20) hydrogenated castor oil 0.2
Polyoxyethylene (40) hydrogenated castor oil 0.2
Cetanol 1.2
Propylene glycol 2.0
35% hydrogen peroxide solution 16.5
60% hydroxyethanediphosphonic acid 0.2
85% phosphoric acid 0.01
Purified water balance
Total 100.0

Claims (2)

(A) containing polyoxyethylene hydrogenated castor oil, (b) cysteine and / or a salt thereof, and (c) (c1) ascorbic acid and / or an ascorbic acid derivative and (c2) tocopherol and / or a tocopherol derivative A hair bleach or oxidative hair dye characterized by the above. The content of the component (b) is 0 . The hair bleaching agent or oxidative hair dye according to claim 1, characterized in that the amount is 01 to 5% by weight.