JP5554909B2 - Hair treatment composition - Google Patents

Description

  The present invention relates to a hair treatment composition containing a specific amino acid and an ester.

In cosmetics applied to skin and hair, sugar derivatives are widely used as components for imparting a moisturizing feeling. In particular, sugar carboxylic acid esters can be conveniently used by introducing a lipophilic group such as a long-chain fatty acid so that compatibility with an oily component often used as a cosmetic base is improved. For example, Patent Document 1 states that a hair protecting agent containing a specific cationic surfactant and a sucrose carboxylic acid ester has resistance to changes in the surrounding moisture.
JP 11-79943 A

  The hair protecting agent disclosed in Patent Document 1 exhibits an excellent effect when applied to damaged hair, but on the other hand, it is excessively soft when applied to hair that is not so damaged (healthy hair). However, depending on the hair quality, there is a problem that there is a risk that the hair volume may not be maintained.

  The said subject is demonstrated more concretely. When hair is subjected to chemical treatments that involve oxidation and reduction, such as oxidized hair color and permanent wave treatment, the proteins that make up the hair are damaged. Damage is accumulated in the hair by repetition, and it becomes so-called damaged hair. Since hair is a “dead cell”, damaged hair is not naturally healed by healthy hair. Usually, these chemical treatments are carried out once a month to several months, and are usually treated uniformly from the hair tips to the roots. On the other hand, since the hair grows on average about 1 cm per month, even with the same single hair, the tip of the hair has undergone multiple chemical treatments and is in a state of great damage, and the root has never undergone chemical treatment. It is a state of healthy hair. When such a conventional hair protecting agent as described above is uniformly applied to such hair, the root becomes more flexible than the tip of the hair, making it difficult for the hair to stand up and maintaining a soft volume. It becomes impossible.

  Furthermore, the hair protecting agent described in the above document contains a specific cationic surfactant as an essential component. For example, when applied to a preparation containing an ionic component as a main component such as a shampoo, There are also restrictions on the formulation, such as forming and precipitating.

  The present invention has been made by finding that a hair treatment composition containing a sugar carboxylic acid ester and L-theanine, which is a kind of amino acid, solves the above problems as a result of intensive studies by the present inventors. Is. An object of the present invention is to provide a hair treatment composition capable of imparting a moisturizing feeling while maintaining a voluminous feel regardless of the state of hair such as damaged hair or healthy hair.

  In order to achieve the above object, the hair treatment composition of the invention described in claim 1 is characterized by containing (A) L-theanine and (B) a sugar carboxylic acid ester.

  The invention according to claim 2 is the hair treatment composition according to claim 1, wherein the (B) sugar carboxylate is a sucrose carboxylate.

  According to the composition for hair treatment of the present invention, it is possible to impart a moisturizing feeling while maintaining the volume feeling of the hair.

  Hereinafter, embodiments in which the present invention is embodied in a composition for treating hair will be described in detail. The hair treatment composition according to this embodiment contains (A) L-theanine and (B) a sugar carboxylic acid ester.

 (A) L-theanine exhibits the effect of imparting a moisturizing feeling to the hair and maintaining the volume of the hair, in combination with the (B) sugar carboxylic acid ester. (A) L-theanine alone has a moisturizing effect on hair. (A) L-theanine is a derivative of L-glutamic acid and is a kind of amino acid. L-theanine is a component that is abundant in tea leaves, especially gyokuro, and is known as an umami component of green tea. L-theanine can be obtained by extraction from tea leaves by a conventional method or by chemical synthesis. Any naturally-derived and synthetically derived L-theanine can be used in the hair treatment composition of the present invention.

  Although content of (A) L-theanine in the composition for hair treatment is arbitrary, Preferably it is 0.001-5 mass%, More preferably, it is 0.01-3 mass%. (A) If the content of L-theanine is less than 0.001% by mass, the effect of maintaining the volume of hair may not be sufficiently exhibited. (A) Even if the content of L-theanine exceeds 5% by mass, the effect of maintaining a higher volume feeling on the hair cannot be obtained, and on the contrary, problems such as stiffness may occur.

  (B) Sugar carboxylic acid ester is mix | blended in order to provide a moisturizing feeling to hair. (B) Sugar carboxylic ester (A) has more affinity for hair by synergistic action with L-theanine, and additively imparts to the hair the moisturizing action each of L-theanine and sugar carboxylic acid ester has. At the same time, it is presumed that the effect of maintaining the volume feeling is synergistically exhibited.

  Although content of (B) sugar carboxylic acid ester in the composition for hair treatment is arbitrary, Preferably it is 0.1-20 mass%, More preferably, it is 0.2-10 mass%. (B) When content of sugar carboxylic acid ester is less than 0.1 mass%, sufficient moisturizing feeling imparting effect may not be obtained. (B) Even if the content of the sugar carboxylic acid ester exceeds 20% by mass, the effect of maintaining the volume feeling with respect to the hair is not obtained, and problems such as stickiness may occur.

  The sugar carboxylic acid ester means that an arbitrary hydroxyl group of the saccharide is ester-bonded to the carboxylic acid, and examples of the saccharide include monosaccharides, disaccharides or more oligosaccharides, and sugar alcohols. Specific examples include glucose, xylose, maltose, cellobiose, lactose, isomaltose, sucrose, chitobiose, cellotriose, maltotriose, raffinose, trehalose, stachyose, cellotetraose, cellopentaose, maltotetraose, maltopentaose, sorbitol Xylitol, maltitol, pentaerythritol, dipentaerythritol and the like.

  The carboxylic acid means an acid having a carboxyl group. Examples of the carboxylic acid in the present invention include acetic acid, propionic acid, butyric acid, hexanoic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearin. Examples thereof include monovalent aliphatic carboxylic acids such as acid, arachidic acid, behenic acid, palmitoyl acid, oleic acid, linoleic acid, and arachidonic acid, and hydroxystearic acid, succinic acid, lactic acid, cinnamic acid, and pyruvic acid.

  Of these, sucrose as the saccharide and monovalent fatty carboxylic acids as the carboxylic acid are more preferable because the effects of the present invention can be best exhibited.

  Examples of the sucrose carboxylate that can be preferably used in the present invention include sucrose behenate, sucrose erucate, sucrose stearate, sucrose oleate, sucrose palmitate, sucrose myristate, sucrose laurate, and sucrose acetate stearate. It is done.

  The degree of esterification may be any of 1 to 8 since there are 8 hydroxyl groups on the sucrose molecule, and a mixture of esters having a plurality of substitution degrees or a plurality of different carboxylic acids on one sucrose molecule. Even those esterified with an acid can be used.

  Commercially available products can be used as the sucrose carboxylic acid ester, and examples thereof include a cosmetic-like series manufactured by Daiichi Kogyo Seiyaku Co., Ltd., and a lyo sugar ester series manufactured by Mitsubishi Chemical Foods Corporation.

  The composition for treating hair may comprise components other than (A) and (B) as necessary, for example, water, polymer compounds, oily components, polyhydric alcohols, surfactants, sugars, preservatives, chelating agents, stabilizers. , A pH adjuster, a plant extract, a herbal extract, an amino acid, a vitamin, a fragrance, and an ultraviolet absorber may be contained.

  Water is used as a solvent or dispersion medium for each component. When water is blended in an appropriate amount together with an oil component and a surfactant, the hair treating composition is emulsified. The water content in the hair treatment composition is preferably 50 to 99% by mass, more preferably 70 to 95% by mass. If the water content is less than 50% by mass, emulsification of the hair treatment composition may be insufficient. If the water content exceeds 99% by mass, the components (A) and (B) that are active ingredients may not be sufficiently contained.

  Examples of the polymer compound include gum arabic, gum karaya, gum tragacanth, sodium alginate, xanthan gum, cellulose derivatives, crosslinked polyacrylic acid, and polydimethylmethylene piperidinium chloride. Examples of the crosslinked polyacrylic acid include carbomers.

  The oily component imparts a smooth feeling to the hair. Therefore, the hair treatment composition preferably further contains an oil component in addition to the components (A) and (B). Examples of the oil component include fats and oils, waxes, higher alcohols, hydrocarbons, higher fatty acids, alkyl glyceryl ethers, esters, and silicones.

  Examples of oils and fats include olive oil, camellia oil, shea fat, almond oil, safflower oil, sunflower oil, soybean oil, cottonseed oil, sesame oil, corn oil, rapeseed oil, rice bran oil, rice germ oil, grape seed oil, avocado oil , Macadamia nut oil, castor oil, coconut oil, and evening primrose oil. Examples of the waxes include beeswax, candelilla wax, carnauba wax, jojoba oil, and lanolin.

  Examples of higher alcohols include lauryl alcohol, myristyl alcohol, cetanol, stearyl alcohol, cetostearyl alcohol, aralkyl alcohol, behenyl alcohol, 2-hexyldecanol, isostearyl alcohol, 2-octyldodecanol, decyltetradecanol, oleyl alcohol, and Lanolin alcohol is mentioned.

  Examples of the hydrocarbon include paraffin, olefin oligomer, polyisobutene, hydrogenated polyisobutene, mineral oil, squalane, polybutene, polyethylene, microcrystalline wax, and petrolatum. Examples of the higher fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, isostearic acid, 12-hydroxystearic acid, oleic acid, and lanolin fatty acid. Examples of the alkyl glyceryl ether include batyl alcohol, chimyl alcohol, ceralkyl alcohol, and isostearyl glyceryl ether.

  Examples of the esters do not correspond to the component (B) and include, for example, diisopropyl adipate, isopropyl myristate, cetyl octoate, isononyl isononanoate, octyldodecyl myristate, isopropyl palmitate, stearyl stearate, myristyl myristate , Isotridecyl myristate, 2-ethylhexyl palmitate, octyldodecyl ricinoleate, fatty acid (C10-30) (cholesteryl / lanosteryl), cetyl lactate, lanolin acetate, ethylene glycol di-2-ethylhexanoate, cetyl caprate, Examples include glyceryl tricaprylate, diisostearyl malate, and dioctyl succinate.

  Examples of silicones include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, terminal hydroxyl group-modified dimethylpolysiloxane, polyether-modified silicone, and an average polymerization degree of 650 to 10,000. Examples include highly polymerized silicone, amino-modified silicone, betaine-modified silicone, alkyl-modified silicone, alkoxy-modified silicone, mercapto-modified silicone, carboxy-modified silicone, and fluorine-modified silicone. Examples of the polyether-modified silicone include PEG-12 dimethicone. Specific examples of these oil components may be used alone or in combination of two or more.

  Examples of the polyhydric alcohol include glycerin, diglycerin, polyglycerin, ethylene glycol, isopentyldiol, propylene glycol (PG), dipropylene glycol (DPG), and 1,3-butylene glycol (BG).

  The surfactant is suitably blended to maintain the stability of the hair treatment composition as an emulsifier of the composition or a solubilizer of each component in the composition. Surfactants include ionic surfactants and nonionic surfactants. Examples of the ionic surfactant include a cationic surfactant, an anionic surfactant, and an amphoteric surfactant. Examples of the anionic surfactant include alkyl ether sulfate, alkyl sulfate, alkenyl ether sulfate, alkenyl sulfate, olefin sulfonate, alkane sulfonate, saturated or unsaturated fatty acid salt, alkyl or alkenyl ether carboxylate , Α-sulfone fatty acid salts, N-acylamino acid type surfactants, phosphate mono- or diester type surfactants, and sulfosuccinate esters. Examples of the alkyl ether sulfate include sodium laureth sulfate. Examples of the N-acylamino acid type surfactant include sodium N-lauroyl-L-glutamate. Examples of the counter ion of the anionic group of these surfactants include sodium ion, potassium ion, and triethanolamine.

  Examples of the cationic surfactant include alkyltrimethylammonium salt, alkenyltrimethylammonium salt, dialkyldimethylammonium salt, dialkenyldimethylammonium salt, lanolin fatty acid aminopropylethyldimethylammonium, and alkyloylamidopropyldimethylamine. Examples of the alkyl trimethyl ammonium salt include stearyl trimethyl ammonium chloride. Examples of the dialkyldimethylammonium salt include distearyldimethylammonium chloride. Examples of the counter ion of the cationic group of these surfactants include chloride ion, bromide ion, iodide ion, alkyl sulfate ion, and saccharin.

  Examples of amphoteric surfactants include cocobetaine, lauramidopropyl betaine, cocamidopropyl betaine, sodium lauroamphoacetate, and sodium cocoamphoacetate.

  Examples of the nonionic surfactant include polyoxyalkylene alkyl ether, polyoxyalkylene alkenyl ether, glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil, fatty acid alkanolamide, and alkylamine oxide. Examples of the polyoxyalkylene alkyl ether include laureth, ceteth, steareth, and palace. Specific examples of these surfactants may be used alone or in combination of two or more.

  Examples of the saccharide include sorbitol. Examples of the preservative include parabens. Examples of the chelating agent include ethylenediaminetetraacetic acid disodium (EDTA-2Na). Examples of the stabilizer include phenacetin, 8-hydroxyquinoline, acetanilide, sodium pyrophosphate, barbituric acid, uric acid, and tannic acid. Examples of the pH adjuster include lactic acid, glycolic acid, tartaric acid, malic acid, pyrrolidone carboxylic acid (PCA), succinic acid, citric acid, glutamic acid, 2-amino-2-methyl-1-propanol (AMP), and triethanolamine. (TEA), and arginine.

  The hair treatment composition can be made into a liquid, mist, gel, foam, cream, or other dosage form. The hair treatment composition can be used as a hair care agent for imparting a moisturizing feeling, such as a shampoo, a rinse, and a hair treatment agent. Further, it can be used as a pre- and post-treatment agent for chemical treatment such as hair dye and permanent wave agent. The composition for treating hair may be used after being applied to the hair and washed away with water or warm water, or the composition adhering to the hair may be used without being washed away with water or warm water. This hair treatment composition may be used as a hair styling agent. The composition for treating hair may be used after being applied to the hair and washed away with water or warm water, or the composition adhering to the hair may be used without being washed away with water or warm water. The hair treatment composition may be used as a hair dyeing agent, for example, an oxidative hair dye and an acid hair dye, for example, by further blending a dye. This hair treatment composition may be used as a bleaching agent, for example, by blending an oxidizing agent. This hair treatment composition may be used, for example, as a permanent wave agent, a hair straightener and a decoloring agent by blending a reducing agent.

According to the embodiment described in detail above, the following effects are exhibited.
(1) In this embodiment, (B) sugar carboxylic acid ester was mix | blended with the composition for hair treatment containing (A) L-theanine. Therefore, the hair processing method which can provide a moisturizing feeling while maintaining the volume feeling of hair is provided.

  (2) In this embodiment, sucrose carboxylate was used as (B) sugar carboxylate. Therefore, the effect of maintaining the volume feeling is good.

  (3) In this embodiment, (B) sugar carboxylic acid ester is blended with the hair treatment composition containing (A) L-theanine, so that a moisturizing sensation is imparted while maintaining the hair volume. can do. For this reason, if the hair treatment composition is applied as an oxidized hair color agent, bleaching agent, or permanent wave agent, the oxidized hair color agent, bleaching agent, permanent wave agent that can provide a moisturizing feeling while maintaining the volume of hair. Can be offered as.

  (4) In this embodiment, (B) sugar carboxylic acid ester is blended with the hair treatment composition containing (A) L-theanine, so that a moisturizing sensation is imparted while maintaining the volume of hair. can do. For this reason, the hair treatment composition is sufficiently treated with oxidized hair color, bleach, permanent wave, and other chemical treatments multiple times, so-called high-damaged hair as well as healthy hair while maintaining a sense of volume while maintaining a sufficient moisturizing feeling. Can be granted. For this reason, the composition for hair treatment can be provided as an agent before and after these chemical treatments.

The above embodiment can be modified as follows.
-In the said embodiment, you may divide | segment each component mix | blended with the composition for hair treatment, and you may comprise as a multiple dosage form.

  Next, examples and comparative examples will be given to describe the embodiment more specifically. First, a human black hair bundle (20 cm) treated with a persulfate-containing bleaching agent was prepared as a damaged hair model for evaluation of hair feel and moisturizing feeling. The persulfate-containing bleaching agent uses a commercially available product (Hoyu Powder Bleach manufactured by Hoyu Co., Ltd.) composed of a powdery first agent containing a persulfate and a second agent containing an oxidizing agent. The human black hair bundle was decolorized according to a conventional method to obtain an experimental hair bundle. These experimental hair bundles were gold. About this hair | bristle bundle, using the tensile tester, the tensile strength fell from the thing before a process, and it was confirmed that the hair has damaged. Hereinafter, this hair bundle is referred to as a “damaged hair bundle”, and a hair bundle that is not subjected to the bleaching process is referred to as an “untreated hair bundle”.

  Next, a straight bob-style wig (black hair wig) in which human hair was implanted was prepared for evaluation of the volume retention effect. The hair implanted in the wig was subjected to a decoloring treatment in the same manner as in the production of the damaged hair bundle except for a portion of about 3 cm from the root to obtain an experimental wig.

(Hair treatment agent)
As in each example shown in Tables 1 and 2, a hair treatment agent as a hair treatment composition was prepared by mixing each component. In addition, unless otherwise indicated, the unit of the numerical value which shows content of each component described in each table | surface means the mass%. In addition, regarding the components marked with * in each table, the raw material names specifically used are shown in Table 3.

  Then, the hair treatment agent of each example was processed with respect to each of damaged hair bundles, untreated hair bundles, and experimental wigs. Each hair bundle was treated once with a commercially available shampoo (Viugen Treatment Shampoo manufactured by Hoyu Co., Ltd.), an appropriate amount of each hair treatment agent was applied, washed for 30 seconds, rinsed with warm water, and dried with towel drying as appropriate. After that, it was left in an atmosphere of a constant temperature and humidity chamber (25 ° C., relative humidity 20%) for 120 minutes and subjected to evaluation immediately after the treatment. As for the experimental wig, after the shampoo treatment, the hair treatment agent treatment was applied to only half of the wig as viewed from the front, and the comparison was made with the remaining half of the hair treatment agent untreated. went.

(Hair feel)
With respect to damaged hair bundles and untreated hair bundles, 5 panelists pass through their fingers, giving 4 points when the finger is very good, 3 points when it is good, 2 points when it is slightly bad, and 2 cases when it is bad. Scoring was made in four stages, one point. Then, as an evaluation of the feel of hair, an average score is calculated for the scoring results of five panelists, and the case where the average score is 3.6 points or more is “excellent” and is 2.6 points or more and less than 3.6 points In the case of “Good”, the case of 1.6 points or more and less than 2.6 points was “slightly bad”, and the case of less than 1.6 points was “bad”.

(Hair moisturizing feeling)
For damaged hair bundles and untreated hair bundles, the touch of 5 panelists gives 4 points when the feeling of moisture is very good, 3 points when it is good, 2 points when it is slightly bad, and 2 cases when it is bad Scoring was made in four stages, one point. Then, as an evaluation of the moisturizing feeling of the hair, an average score was calculated for the scoring results of five panelists, and when the average score was 3.6 points or more, “excellent” was determined, and 2.6 points to 3.6 points. The case of less than 1.6 points was evaluated as “good”, the case of 1.6 points or more and less than 2.6 points was set as “slightly bad”, and the case of less than 1.6 points was set as “bad”.

(Volume feeling retention effect)
As for the experimental wig, five panelists confirmed visually and compared with the untreated part of the hair treatment agent. Similarly, when the volume feeling is sufficiently retained, the volume feeling is slightly lost. Scoring was done in 4 stages, with 3 points when there was no problem, 2 points when volume was lost, and 1 point when volume was not maintained at all. As an evaluation of the volume feeling retention effect, an average score is calculated for the scoring results of five panelists, and when the average score is 3.6 points or more, it is determined as “excellent” and 2.6 points or more and 3.6 points The case of less than 1.6 points was evaluated as “good”, the case of 1.6 points or more and less than 2.6 points was set as “slightly bad”, and the case of less than 1.6 points was set as “bad”.

  As shown in Table 1, feel and moisturizing evaluation of each hair bundle treated with the hair treatment agent of Examples 1 to 9 containing (A) L-theanine and (B) sugar carboxylic acid ester, experimental wig It was confirmed that each of the evaluations of the volume-holding effect by “excellent” was “excellent”.

  On the other hand, as shown in Table 2, Comparative Example 1 in which (A) L-theanine in Example 1 was omitted, and (A) L-theanine in Example 1 was also converted to L-glutamine which is an amino acid having a similar structure. In Comparative Example 2 in which “1” was substituted, the volume feeling retention effect was “bad”.

  Comparative Example 3 containing (A) L-theanine and not containing (B) a sugar carboxylic acid ester, and Comparative Example 3 containing only the control component that does not correspond to the component (B) instead of containing the component (B). In Nos. 4 and 5, it was confirmed that the volume feeling holding effect was “slightly bad” or “bad” and the volume feeling holding effect was not exhibited.

(Hair dye)
The hair dye of Example 10 shown in Table 4 was prepared. The first agent and the second agent were mixed at a mass ratio of 1: 1 to prepare a hair dye composition, and each hair bundle and experimental wig were dyed. Each hair bundle and the experimental wig which were dyed were left at room temperature for 20 minutes and then washed with water. Thereafter, the evaluation was made by the same method and standard as the hair treatment agent. As a result, the evaluation of the feel of each hair bundle, the evaluation of the moisturizing feeling, and the evaluation of the volume feeling holding effect by the experimental wig were all “excellent”.

The technical idea that can be grasped from the embodiment will be described below.
The sucrose carboxylate is a sucrose carboxylate having an HLB of 3 or less, and the hair treatment composition according to claim 2. When comprised in this way, since the affinity of a healthy hair and the composition for hair treatment improves more, the effect of this invention is exhibited more.

Claims (1)

(A) L-theanine (excluding inclusion as a tea extract) and (B) a sugar carboxylic acid ester, wherein the (B) sugar carboxylic acid ester is an ester of sucrose and a monovalent fatty carboxylic acid A hair treatment composition characterized by the above.