JP2009256258A - Alkali agent-containing hair treatment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair treatment which contains an alkali agent, by which transient skin irritation feeling can be suppressed when being applied to the hair, and by which the irritating odor of the alkali agent can be reduced. <P>SOLUTION: The hair treatment containing the alkali agent such as a permanent wave agent, a curly hair corrective, a hair bleaching agent and an oxidation hairdye further contains menthol and camphor. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a hair treatment agent containing an alkaline agent. Specifically, the present invention relates to a hair treatment agent that suppresses skin irritation caused by the contained alkaline agent.

  Hair treatment agents such as permanent wave agents, hair straighteners, hair bleaching agents, and oxidative hair dyes are maintained in a strong alkaline state in order to swell the hair cuticle and fully develop the function of the agent. ing. Such a hair treatment agent is blended with an alkaline agent in order to maintain an alkaline state.

  However, when a hair treatment agent containing an alkaline agent is used, the alkaline agent may cause a temporary skin irritation accompanied by discomfort to the scalp by the user. In addition, due to the recent increase in safety orientation in consumers, even if it has a high function, it tends to be avoided to use the hair treatment agent that causes the above-mentioned irritation feeling.

  Then, the composition which suppresses generation | occurrence | production of the said irritation feeling in skin in the hair treatment agent mix | blended with the said alkaline agent is reported. For example, a permanent agent (see Patent Document 1) containing a thymol compound or a salt thereof, a hair bleaching agent or an oxidation containing an anionic surfactant (see Patent Document 2) or phytic acid (see Patent Document 3) Hair dyes have been reported.

  However, in the inventions described in Patent Documents 1 to 3, depending on the user, the occurrence of irritation to the skin due to the alkaline agent may not be suppressed, and the situation is not sufficient.

Japanese Patent Laid-Open No. 5-39211 JP 2004-339179 A JP 2007-39351 A

  The present invention has been made in view of the above prior art, and provides a hair treatment agent that can suppress a transient skin irritation during hair treatment and can also reduce the irritating odor of an alkaline agent. The task is to do.

That is, the present invention
[1] A hair treatment agent containing an alkaline agent, characterized in that it contains menthol and camphor, and [2] a hair treatment agent containing the alkaline agent is a permanent wave agent, It is related with the hair treatment agent as described in said [1] which is a hair straightener, a hair bleaching agent, or an oxidative hair dye.

  The hair treatment agent of the present invention can effectively suppress the transient skin irritation that occurs during the treatment of hair, and also effectively suppresses the irritating odor of the alkaline agent in the hair treatment agent. There is an effect that can be.

  The hair treatment agent of the present invention contains an alkali agent and contains menthol and camphor as essential components.

  Menthol is a monoterpene alcohol contained in bran oil. Moreover, camphor is a component contained in the essential oil of camphor tree, and is also a substance called camphor.

  The content of menthol is not particularly limited as long as the effect of the present invention is exhibited, but it is preferably 0.05 to 10% by mass, more preferably 0.1 to 5% by mass in the hair treatment agent. . When the content is less than 0.05% by mass, it is inferior to the effect of suppressing the transient skin irritation and the irritating odor of the alkaline agent. Is not preferable in any case.

  In addition, the content of camphor is not particularly limited as long as the effect of the present invention is exhibited, but it is preferably 0.05 to 10% by mass, and preferably 0.1 to 5% by mass in the hair treatment agent. More preferred. When the content is less than 0.05% by mass, it is inferior to the effect of suppressing the transient skin irritation and the irritating odor of the alkaline agent. Is not preferable in any case.

  In the hair treatment agent according to the present invention, the content ratio of menthol as the first component and camphor as the second component is not particularly limited, but is preferably 0.1: 1 to 10: by weight. 1, more preferably 0.2: 1 to 5: 1, still more preferably 0.5: 1 to 2: 1. When the content of the first component exceeds 10 parts by weight of the second component, and when it is less than 0.1 parts by weight, the effect of suppressing the transient skin irritation and the irritating odor of the alkaline agent Since the suppression effect may not be fully exhibited, it is not preferable.

  Examples of the hair treatment agent containing the alkaline agent according to the present invention include permanent wave agents, hair straighteners, hair bleaching agents, and oxidative hair dyes. Usually, these hair treatment agents are used in a two-part form, but may be a one-part or three-part hair treatment agent.

  When the hair treatment agent of the present invention is used as a permanent wave agent or a hair straightener, in addition to the essential components of menthol and camphor, usually the first agent is ammonia, ammonium bicarbonate, ammonium carbonate, sodium hydroxide, monoethanolamine , Diethanolamine, triethanolamine, isopropanolamine, 2-amino-2-methyl-1-propanol and other alkaline agents; cysteine, N-acetylcysteine, homocysteine, thioglycolic acid, thiolactic acid, thiomalic acid, thiotartaric acid, etc. Contains a reducing agent.

  The second agent contains an oxidizing agent such as sodium bromate, potassium bromate, sodium perborate, hydrogen peroxide, and the like.

  When used as a hair bleaching agent, in addition to the essential components of menthol and camphor, the first component is usually ammonia, ammonium bicarbonate, ammonium carbonate, sodium hydroxide, monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, 2 -An alkali agent such as amino-2-methyl-1-propanol is contained, and the second agent contains an oxidizing agent such as hydrogen peroxide.

  When used as an oxidative hair dye, usually, the first agent of the above-mentioned hair bleaching agent, dye precursors such as p-phenylenediamine, p-aminophenol, o-aminophenol, p-methylaminophenol, and resorcin , Catechol, m-aminophenol and other couplers are contained.

  What is necessary is just to contain the normal amount which the component contained in the above-mentioned hair treatment agent exhibits the function made into the objective of hair treatment.

  In the hair treatment composition of the present invention, in addition to the above components, lower alcohols such as ethanol and isopropanol; lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, etc., as long as the effects of the present invention are not impaired Higher alcohols; higher fatty acids such as lauric acid, myristic acid, stearic acid, oleic acid; esters such as myristyl myristate, isostearyl myristate, stearyl stearate; animal and vegetable oils such as avocado oil, olive oil, safflower oil, and hardened oil Polyhydric alcohols such as polyethylene glycol, glycerin, polyglycerin, 1,3-butylene glycol, 1,2-pentanediol, 1,2-octanediol; sorbitan fatty acid esters, glycerin fatty acid esters, and alkyls thereof Nonionic surfactants such as oxide adducts, polyglycerin fatty acid esters, polyoxyalkylene alkyl ethers, polyoxyalkylene fatty acid esters, polyoxyethylene lanolin; quaternary ammonium salts such as ethyl lanolin sulfate fatty acid aminopropylethyldimethylammonium, stearyl chloride Cationic surfactants such as alkylamine salts such as trimethylammonium, fatty acid amideamine salts such as diethylaminoethylamide stearate; higher fatty acid soaps, alkyl sulfate esters, alkyl phosphates, polyoxyethylene alkyl ether sulfates, alkyl ether phosphorus Anionic surfactants such as acid esters, alkyl ether carboxylates, acylmethyl taurates, alkyl sulfosuccinic acids and salts thereof; alkyl glycines , Glycine-type amphoteric surfactants such as carboxymethylglycine salt, N-acylaminoethyl-N-2-hydroxyethylglycine salt, aminopropionic acid-type amphoteric surfactants such as alkylaminopropionate and alkyliminodipropionate Agents, amphoteric surfactants such as aminoacetic acid betaine-type amphoteric surfactants such as alkyldimethylaminoacetic acid betaine and fatty acid amidopropyldimethylaminoacetic acid betaine; and sulfobetaine-type amphoteric surfactants such as alkylhydroxysulfobetaine; Red 102, Yellow 202 (1), Yellow 202 (2), Yellow 203, Black 401 and other pigments; Cationic polymer, hydrolyzed peptide, pH stabilizer, chelating agent, thickener Anti-inflammatory agents, UV absorbers, various amino acids, plant extracts, fragrances, water, etc. It can be appropriately contained depending on the purpose.

  Next, the present invention will be described in more detail based on examples. However, the present invention is not limited to such examples.

[Test Example 1: Selection of subjects]
Selection of subjects sensitive to the alkaline agent was carried out by the method disclosed in Japanese Patent Application Laid-Open No. 2007-191412. That is, in the room at room temperature (23-27 ° C.), the subject's neck was wiped with a wet towel before the test, and after removing sebum stains, the patient was allowed to stand still for 5 minutes. After waiting, the hair bleaching agent was prepared by mixing 80 parts by weight of the first agent and 20 parts by weight of the second agent in the hair bleaching agent formulation 1 having the composition shown in Table 1 on the neck. For Formula 2, a hair bleaching agent was prepared in the same manner as Formula 1.

  In Formula 1, a hair bleaching agent is prepared so as to have a high content of alkaline agent. In Formula 2, a hair bleaching agent is prepared so as to have a low content of alkaline agent. Can be easily determined.

  Next, the obtained hair bleaching agent was applied to the subject's neck. On the subject's neck, 1 g of the hair bleaching agent of Formula 1 is applied to an area of about 3 cm × 3 cm square near the skin segments C2 to C3 that is off to the left or right of the midline, and the other side that is off the midline 1 g of the hair bleaching agent of Formula 2 was applied in an area of about 3 cm × 3 cm square.

  For each of Formula 1 (prescription with high content of alkaline agent) and Formula 2 (prescription with low content of alkaline agent), the skin irritation strength after 5, 7 or 10 minutes has elapsed from the application based on the following evaluation criteria, The average score was calculated.

<Evaluation criteria for skin irritation intensity>
0 points: I do not feel irritation.
1 point: I feel faint stimulation.
2 points: I feel the stimulus clearly.
3 points: I feel I can't stand the stimulus.

  Next, for each subject, the average score obtained in prescription 1 is compared with the average score obtained in prescription 2, the magnitude relation of the average points is compared, and the “average score obtained in prescription 1” is “prescription”. Ten subjects who were higher than the “average score obtained in 2” were selected.

[Test Example 2: Evaluation of hair treatment agent]
According to the composition shown in Table 2, hair bleaching agents of Examples and Comparative Examples were prepared and evaluated for the skin irritation suppressing effect (Evaluation 1) of the following alkaline agents and the stimulating odor suppressing effect (Evaluation 2) of the alkaline agents.

<Evaluation of skin irritation suppression effect (Evaluation 1)>
Ten subjects selected in Test Example 1 use the same method as Test Example 1 to compare the degree of transient skin irritation between the samples of Examples and Comparative Examples and the sample of Formula 1 with an average score. And evaluated. Table 3 shows the number of subjects obtained as a result of the evaluation.

<Evaluation of irritating odor suppression effect (Evaluation 2)>
Ten subjects selected in Test Example 1 sniffed the odor of each sample, and compared and evaluated the degree of the irritating odor of the alkaline agent of each sample and the degree of the irritating odor of the alkaline agent of the sample of Formula 1. Table 3 shows the number of subjects obtained as a result of the evaluation.

  As a result of Table 3, the hair treatment agent of the present invention can effectively suppress the transient skin irritation that occurs during the treatment of the hair, and also has the irritating odor of the alkaline agent in the hair treatment agent. It turns out that it can suppress effectively.

  Hereinafter, the formulation example of the hair treatment agent of this invention is shown. In addition, a compounding quantity is the mass%.

(Formulation Example 1: Two-component oxidative hair dye)
<First Agent>
Polyoxyethylene (20) hydrogenated castor oil 5.0
Polyoxyethylene (20) cetyl ether 2.5
30% stearyltrimethylammonium chloride 3.0
Jojoba oil 0.5
Polyoxyethylene (50)
Methylpolysiloxane copolymer 1.0
Microcrystalline wax 1.0
Cetyl alcohol 4.0
Oleyl alcohol 2.0
Glycerin 2.0
1,2-octanediol 1.0
Monoethanolamine 4.0
28% ammonia water 3.0
Ammonium carbonate 0.8
Paraphenylenediamine 0.4
Resorcin 0.35
2,4-Diaminophenoxyethanol hydrochloride 0.03
Metaaminophenol 0.05
Anhydrous sodium sulfite 0.5
Sodium L-ascorbate 0.5
Edetate disodium 0.2
Menthol 0.5
Kangfa 0.3
Purified water balance
Total 100.0

<Second agent>
35% hydrogen peroxide solution 16.5
Purified water balance
Total 100.0

(Formulation Example 2: Two-component 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
Kanfa 0.4
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
Menthol 0.3
Purified water balance
Total 100.0

(Formulation Example 3: One-part hair straightener)
Thioglycolic acid monoethanolamine solution (50%) 6.0
Monoethanolamine (80%) 4.0
Stearyltrimethylammonium chloride 1.0
Cetostearyl alcohol 10.0
Concentrated glycerin 2.0
Polyoxyethylene cetyl ether 1.0
Polyoxyethylene behenyl ether 1.0
Menthol 0.5
Kanfa 0.25
Purified water balance
Total 100.0

(Prescription Example 4: Permanent Wave Agent)
<First Agent>
Ammonium thioglycolate 4.0
Monoethanolamine 2.0
Cetyltrimethylammonium chloride 1.0
Cetostearyl alcohol 10.0
Polyoxyethylene cetyl ether 1.0
Polyoxyethylene behenyl ether 1.0
Menthol 0.2
Kanfa 0.4
Purified water balance
Total 100.0

<Second agent>
Sodium bromate 6.0
Cetostearyl alcohol 15.0
Polyoxyethylene cetyl ether 1.0
Polyoxyethylene hydrogenated castor oil 1.6
Polyglyceryl monolaurate 1.0
Polyoxyethylene sorbit 0.5
Propylene glycol 2.0
Phosphoric acid 0.05
Tetrasodium pyrophosphate 0.1
Purified water balance
Total 100.0

Claims (2)

  A hair treatment agent containing an alkaline agent, comprising menthol and camphor.   The hair treatment agent according to claim 1, wherein the hair treatment agent containing the alkaline agent is a permanent wave agent, a hair straightener, a hair bleaching agent, or an oxidative hair dye.