JP2010064959A - Composition for treating hair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a composition for treating hair, which enables highly damaged hair such as that subjected to several chemical treatments to retain sufficient moisture feeling. <P>SOLUTION: The composition for treating hair contains L-theanine, at least one chosen from lanolin and a derivative thereof and at least one chosen from higher fatty acids that are liquid at 25°C. The composition for treating hair can be used as a hair-care agent such as a shampoo, a hair conditioner and a hair treatment agent or as an agent for treating hair such as a hair dye and a permanent wave agent. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a hair treatment composition containing specific amino acids and specific fats and oils.

In cosmetics applied to skin and hair, water-soluble polyhydric alcohols such as glycerin, 1,3-butylene glycol, propylene glycol, and sorbitol, and water-soluble water such as polyethylene glycol are generally used as ingredients for imparting a moisturizing feeling. Known are amino acids such as polymers, proline, and L-theanine, natural moisturizing factors such as hyaluronic acid, sodium pyrrolidonecarboxylate, and sodium lactate, and oily components. For example, Patent Document 1 discloses an external skin moisturizer made of L-theanine. Patent Document 2 states that a hair cosmetic containing a cationic surfactant, lanolin oil and fat, and a liquid oil having a branched structure eliminates crusting and provides excellent cohesiveness.
JP-A-9-286715 Japanese Patent Laid-Open No. 63-316712

  By the way, the skin external moisturizer disclosed in Patent Document 1 imparts a high moisturizing feeling to hair, but has been subjected to a plurality of chemical treatments such as oxidized hair color, bleach, permanent wave, etc. However, there was a problem that the sustainability of the moisturizing feeling was not sufficient. This is thought to be because the hair itself is in a porous state (porosity) and the water retention ability is reduced.

  The hair cosmetic composition disclosed in Patent Document 2 imparts a good finish feeling even to high-damaged hair as described above, and has a moisturizing feeling immediately after treatment, but has a long-lasting moisturizing feeling. It did not solve the problem of not being enough.

  Furthermore, the hair protecting agent described in Patent Document 2 contains a 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, a salt may be added in some cases. There are also formulation restrictions such as formation and precipitation.

  As a result of intensive studies by the present inventors, the present invention has found that a hair treatment composition containing L-theanine simultaneously contains a specific oil or fat solves the above-mentioned problems. It was made by. An object of the present invention is to provide a hair treatment composition capable of sufficiently maintaining the effect regardless of the state of the hair such as the presence or absence of damage while imparting a moisturizing feeling to the hair.

  In order to achieve the above object, the hair treatment composition of the invention described in claim 1 is (A) at least one selected from L-theanine, (B) lanolin and derivatives thereof, and (C) at 25 ° C. It contains at least one selected from liquid higher fatty acids.

  The invention according to claim 2 is the hair treatment composition according to claim 1, wherein the (C) is at least one selected from isostearic acid and oleic acid.

  According to the hair treatment composition of the present invention, it is possible to impart a moisturizing feeling to the hair and to improve the sustainability of the moisturizing feeling regardless of the state 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) at least one selected from L-theanine, (B) lanolin and derivatives thereof, and (C) at least one selected from higher fatty acids liquid at 25 ° C. is doing.

  (A) L-theanine imparts a moisturizing feeling to hair by the combined use of (B) at least one selected from lanolin and derivatives thereof, and (C) at least one selected from higher fatty acids that are liquid at 25 ° C. In addition, it exerts the effect of sufficiently maintaining the moisturizing feeling regardless of the state of the hair. (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 natural or synthetic L-theanine can be used in the hair treatment composition.

  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) When content of L-theanine is less than 0.001 mass%, the effect which improves the sustainability of a moisturizing feeling with respect to hair may not fully be exhibited. Even if the content exceeds 5% by mass, the effect of improving the persistence of the moisturizing feeling on the hair is not obtained.

  (B) At least one selected from lanolin and derivatives thereof is contained to impart a moisturizing feeling to the hair. In the hair treatment composition of the present invention, it acts on the hair synergistically with (A) L-theanine and continuously exerts its moisturizing effect.

  Lanolin and its derivatives mean lanolin and various components derived from lanolin. Specifically, lanolin, polyoxyethylene lanolin (for example, PEG-10 lanolin, etc.), hydrogenated lanolin, polyoxyethylene hydrogenated lanolin. (Eg, PEG-15 hydrogenated lanolin), lanolin alcohol, hydrogenated lanolin alcohol, polyoxyethylene lanolin alcohol (eg, lanes-5), liquid lanolin, lanolin wax, lanolin fatty acid ester (eg, lanolin fatty acid isopropyl), and acetic acid Examples include lanolin.

  Although content of (B) lanolin and its derivative (s) in the composition for hair treatment is arbitrary, Preferably it is 0.1-5 mass%, More preferably, it is 0.5-3 mass%. If the content is less than 0.1% by mass, it may not be possible to impart sufficient moisturizing feeling to the hair. When the content exceeds 5 mass%, the stickiness of hair becomes strong and may cause a defect.

  (C) At least one selected from liquid higher fatty acids at 25 ° C. exhibits the effect of synergistically improving the sustainability of the moisturizing feeling with the components (A) and (B), and the stickiness due to (B) Demonstrate the effect of suppressing the deterioration of touch.

  (C) The higher fatty acid that is liquid at 25 ° C. may be any higher fatty acid as long as it has fluidity at 25 ° C., but at least one selected from oleic acid and isostearic acid from the above effect. It is more preferable that

  (C) Although content of the higher fatty acid liquid at 25 degreeC is arbitrary, Preferably it is 0.1-10 mass%, More preferably, it is 1-8 mass%, More preferably, it is 2-6 mass%. If the content is less than 0.1% by mass, it may not be possible to impart sufficient moisturizing feeling to the hair. When the content exceeds 10% by mass, the stickiness of the hair becomes strong and may cause problems.

  The composition for hair treatment is, for example, water, a polymer compound, (B) and (C) oily components that do not correspond to the respective components, polyhydric alcohols, surfactants, sugars, preservatives, chelating agents, You may contain at least 1 type chosen from a stabilizer, a pH adjuster, a plant extract, a crude drug extract, the amino acids which do not correspond to (A), vitamins, a fragrance | flavor, and a ultraviolet absorber.

  Water is used as a solvent or dispersion medium for each component. When an appropriate amount of water is contained together with the oil component and the surfactant, the hair treatment 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 active ingredients (A), (B) and (C) 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, it is preferable that the composition for hair treatment further contains an oil component that does not correspond to the components (B) and (C). 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 waxes include beeswax, candelilla wax, carnauba wax, and jojoba oil.

  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, and oleyl alcohol. Can be 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, and 12-hydroxystearic acid. Examples of the alkyl glyceryl ether include batyl alcohol, chimyl alcohol, ceralkyl alcohol, and isostearyl glyceryl ether.

  Examples of the esters include diisopropyl adipate, isopropyl myristate, cetyl octanoate, isononyl isononanoate, octyldodecyl myristate, isopropyl stearate, stearyl stearate, myristyl myristate, isotridecyl myristate, 2-ethylhexyl palmitate Octyldodecyl ricinoleate, fatty acid (C10-30) cholesteryl, cetyl lactate, ethylene glycol di-2-ethylhexanoate, pentaerythritol fatty acid ester, dipentaerythritol fatty acid ester, cetyl caprate, glyceryl tricaprylate, diiso malate Stearyl and dioctyl succinate are mentioned.

  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 contained in order 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 an anionic surfactant, a cationic 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, alkyl or alkenyl ether carboxylate, α-sulfone fatty acid salt , 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, 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, polyoxyethylene sorbitan fatty acid ester, sucrose fatty acid ester, sorbitan fatty acid ester, alkyl saccharide surfactant, glycerin fatty acid ester, Examples include 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 hair treatment composition may be used as a hair dyeing agent such as an oxidative hair dye and an acid hair dye, for example, by further containing a dye. This hair treatment composition may be used as a bleaching agent, for example, by containing 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 containing a reducing agent.

According to the embodiment described in detail above, the following effects are exhibited.
(1) In this embodiment, (A) the hair treatment composition containing L-theanine is selected from (B) at least one selected from lanolin and derivatives thereof, and (C) a higher fatty acid that is liquid at 25 ° C. Contains at least one. Therefore, there is provided a hair treatment method capable of sufficiently maintaining the moisturizing feeling regardless of the state of the hair while imparting a moisturizing feeling to the hair.

  (2) In the present embodiment, (C) at least one selected from isostearic acid and oleic acid was used as the higher fatty acid that is liquid at 25 ° C. Therefore, the feeling deterioration suppressing effect is particularly good.

  (3) In this embodiment, in this embodiment, (A) at least one selected from lanolin and derivatives thereof in (A) a hair treatment composition containing L-theanine, and (C) liquid at 25 ° C. Contain at least one selected from higher fatty acids, while giving moisture to the hair, sufficiently maintain the moisturizing feeling even on highly damaged hair that has undergone multiple chemical treatments such as oxidized hair color, bleach, and permanent wave. be able to. For this reason, if the composition for hair treatment is applied to these chemical treatment agents, it can be provided as an oxidized hair color agent, bleaching agent, and permanent wave agent having a high moisturizing feeling.

  (4) In this embodiment, in this embodiment, (A) at least one selected from lanolin and its derivatives in (A) a hair treatment composition containing L-theanine, and (C) liquid at 25 ° C. Contains at least one kind selected from higher fatty acids, giving the hair a moisturizing feeling, but also maintaining the moisturizing feeling for so-called highly damaged hair that has undergone multiple chemical treatments such as oxidized hair color, bleach, and permanent wave. Can be made. 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 contained in the composition for hair treatment, and you may comprise as a multiple dosage form.

  Next, the embodiment will be described more specifically with reference to examples and comparative examples. First, a human black hair bundle (20 cm) treated with a persulfate-containing bleach was prepared as a damaged hair model for experiments. 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. An experimental hair bundle was obtained by decolorizing the human black hair bundle according to a conventional method. These experimental hair bundles were gold. About this hair | bristle bundle, the tensile tester was used and the intensity | 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 “damage hair bundle”.

Each of the experimental hair bundle and the untreated human black hair bundle (hereinafter referred to as “untreated hair bundle”) was subjected to the following evaluations on the feel and moisturizing feeling of the hair. The evaluation results are shown in each table.
(Hair treatment agent)
As shown in Tables 1 and 2, each component was mixed to prepare each example of a hair treatment composition as a hair treatment agent. 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%.

  Next, each of the damaged hair bundles and the untreated hair bundle was treated with the hair treatment composition of each example. 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. Furthermore, it was left to stand for 5 days in an atmosphere of a constant temperature and humidity chamber (25 ° C., relative humidity 55%) and subjected to evaluation after 5 days.

(Hair feel)
For each hair bundle, five panelists pass through their fingers, 4 points when the finger passage is very good, 3 points when it is good, 2 points when it is slightly bad, and 1 point when it is bad Scoring at. Then, as an evaluation of hair feel, 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 regarded as “excellent” and is 2.6 points or more and less than 3.6 points. The case was “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 each hair bundle, four panelists can touch the panel with 5 hands, giving 4 points when it feels very moist, 3 points when it is good, 2 points when it is slightly bad, and 1 point when it is bad. Scoring at. Then, as an evaluation of moist feeling, 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 considered “excellent” and 2.6 points or more and less than 3.6 points The case was “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”.

  As shown in Table 1, Example 1 containing (A) at least one selected from L-theanine, (B) lanolin and derivatives thereof, and (C) at least one selected from liquid higher fatty acids at 25 ° C. Each hair bundle treated with the hair treatment agent of ˜12 was “excellent” in both the feel and moisturizing feeling of the hair immediately after the treatment and after 5 days, and it was confirmed that the moisturizing feeling was sustained. .

  On the other hand, as shown in Table 2, Comparative Example 1 in which (A) L-theanine in Example 1 was omitted, and L-theanine in Example 1 was also substituted with L-glutamine, an amino acid having a similar structure. In Comparative Example 2, in the case of the damaged hair bundle, the evaluation of the moisturizing feeling after 5 days was “bad”, and it was confirmed that the durability of the moisturizing feeling was not exhibited at all in the damaged hair bundle.

  (C) containing at least one selected from (A) L-theanine and (B) lanolin and its derivatives, and (C) not containing at least one selected from liquid higher fatty acids at 25 ° C. In Comparative Examples 4 and 5 in which components that do not satisfy the requirements of the present invention are substituted, the hair feel evaluation is “bad” in the untreated hair bundle, and excessive stickiness due to (B) is not suppressed. Was confirmed. Furthermore, in the case of damaged hair bundles, the evaluation of the moisturizing feeling after 5 days was “slightly bad”, and it was also confirmed that the durability of the moisturizing feeling was not sufficiently exhibited in the damaged hair bundle.

  (A) L-theanine, and (C) containing at least one selected from liquid higher fatty acids at 25 ° C. and (B) not containing at least one selected from lanolin and its derivatives, as in Comparative Example 6 (B ) Is replaced with a component that does not satisfy the requirements of the present invention, in the case of damaged hair bundles, the evaluation of the moisturizing feeling immediately after the treatment is “slightly bad” and the evaluation of the moisturizing feeling after 5 days is “bad” In the first place, it was confirmed that the damaged hair bundle could not be sufficiently moisturized and the durability was not exhibited.

(Hair dye)
A hair dye was prepared with the composition of each example shown in Table 3. The first agent and the second agent of each example were mixed at a mass ratio of 1: 1 to prepare a hair dye composition, and each hair bundle was dyed. Each hair bundle that was dyed was allowed to stand at room temperature for 20 minutes and then washed with water. Thereafter, the hair bundle was evaluated by the same method and criteria as in the Examples of the hair treatment agent. As a result, the same results as in Examples 1 to 12 were obtained.

Claims (2)

  A hair treatment composition comprising (A) L-theanine, (B) at least one selected from lanolin and derivatives thereof, and (C) at least one selected from higher fatty acids which are liquid at 25 ° C.   The composition for hair treatment according to claim 1, wherein (C) is at least one selected from isostearic acid and oleic acid.