JP5144040B2 - Hair treatment composition - Google Patents

Description

  The present invention relates to a hair treatment composition for applying to hair that has been excessively reduced by a first hair straightening composition containing a reducing agent. In particular, the present invention relates to a hair treatment composition used for hair before using a high-temperature hair-styling iron for straightening hair in a curly hair straightening process.

  The first agent used in conventional hair straightening treatments contains a reducing agent such as thioglycolic acid or cysteine as an active ingredient, and an alkali agent such as ammonia or amines as an auxiliary to promote it. As a general method for straightening hair, a first agent containing a reducing agent and an alkaline agent as described above is applied to the hair to reduce the hair, and a desired softened state (hair by reduction). After the hair is softened), it is washed with water and a straight shape is formed with a comb or the like. Next, the state of the style is maintained by applying and oxidizing a second agent used for curly hair straightening treatment containing an oxidizing agent such as hydrogen peroxide or bromate as an active ingredient. When using a hairstyling iron with a surface temperature of 60 ° C. to 220 ° C., first apply the first agent to the hair to reduce the hair, wash it thoroughly with water, and then remove the moisture from the hair. Treat for several seconds using a hot hairstyling iron set to a suitable temperature. Next, the state of the style is maintained by applying and oxidizing the 2nd agent used for the hair straightening process which mix | blended oxidizing agents, such as hydrogen peroxide and a bromate, as an active ingredient. As described above, the first and second agents for straightening hair are effective in making hair straight by utilizing a chemical reaction that cleaves and recombines disulfide bonds in hair. In order to obtain a satisfactory result, it was necessary for a skilled beauty technician to find the optimum softened state and to wash away the first agent. If this determination is mistaken and the hair is too soft (also referred to as overtime), the hair is significantly damaged in the oxidation process, and the smoothness of the hair is lost and the hair becomes curly. Further, when the overtimed hair is subjected to heat treatment using the high-temperature hair-styling iron, the degree of damage is further increased.

  The softening speed of the first agent varies depending on the hair quality and the degree of damage of the hair, and the softening speed increases as the damage increases. Generally, the hair ends are damaged in daily life, and are often damaged unevenly by hair dyes and decoloring agents. As described above, the hair whose degree of damage varies depending on the site requires advanced techniques and experience of a hairdresser to uniformly and optimally soften the entire hair. For example, to apply a cream to reduce the effect of the first agent in advance on the damaged portion, or to wash away once the damaged portion is softened and then apply the first agent only to the unsoftened portion again It was very inefficient. In order to suppress the rate of reduction reaction of disulfide bonds, it is a common technique to mix disulfide as a substance with the first agent for straightening hair. In other words, the reduction reaction progresses slowly in the hair, making it easier to determine the optimal softening state.However, if this amount is increased, the effect of slowing the softening will occur, so a larger amount should be used. It could not be blended. However, even if such a preparation is used, in the case of damaged hair, if the appropriate treatment time is mistaken, it may be excessively softened, which has been a technical problem in hair straightening treatment.

  An object of the present invention is to provide a hair treatment composition and a treatment method for returning hair excessively reduced by a reducing agent to hair in an optimal softened state.

  As a result of repeating diligent research, the present inventors have found that a hair treatment composition containing a specific amount of disulfide is applied immediately after the reduction step in which the first agent used for the hair straightening treatment containing a reducing agent is applied to the hair. As a result, the present inventors have found that the hair is in an optimal softened state by use, and completed the present invention.

That is, the present invention is a hair treatment composition used for hair after applying the first agent composition for straightening curly hair containing at least one reducing agent, wherein 10 % by weight of disulfide is used. contains ~ 25 wt%, and about pH is 3 to 6.4 der Ru hair treatment composition.

  The disulfide is preferably dithiodiglycolic acid or a salt thereof.

  Moreover, after apply | coating the composition of this invention and returning to an optimal softened state, the hair temperature correction process by the high-temperature hair-styling iron whose surface temperature is 60 degreeC-220 degreeC can be performed.

  According to the composition of the present invention, even in a so-called overtime state in which the hair is excessively softened, it is possible to obtain an optimally softened hair.

  The composition for hair treatment of the present invention is used for hair after applying the first agent composition for straightening curly hair containing at least one reducing agent.

  The first hair straightening composition containing the reducing agent is not particularly limited, and includes at least ammonia as a reducing agent and auxiliary agent such as thioglycolic acid and its salts, cysteine, monoethanolamine, It is not particularly limited as long as it contains an alkanolamine such as triethanolamine and an alkali agent such as sodium hydroxide.

  The hair treatment composition of the present invention contains a specific amount of disulfide. By containing a certain amount of disulfide, it is possible to recombine the disulfide bonds of cystine in the cut hair. Specifically, the chemical equilibrium between the reducing agent thio compound and the dithio compound produced by the reduction reaction of the cystine disulfide bond is tilted toward the reaction side where a specific amount of disulfide is added to produce the thio compound. By this, the recombination reaction of disulfides that occurs at the same time can bring the hair into a state that can be reduced again or the optimum softened state.

  Examples of the disulfide include dithiodiglycolic acid, diammonium dithiodiglycolate, diammonium dithiodilactic acid, and diacetylcystine. Of these, diammonium dithiodiglycolate is preferred from the standpoint of odor during operation.

  The blending amount of the disulfide is 5% by weight to 30% by weight, and more preferably 10% by weight to 25% by weight of the entire hair treatment composition. When the blending amount of disulfide is less than 5% by weight, the effect of returning from an excessively reduced state to the optimally softened hair is reduced, and when it exceeds 30% by weight, the hair is optimally softened. Since the reaction to return to too rapidly proceeds, the hair may converge and may be slightly damaged.

  In this invention, the said disulfide can be mix | blended stably in the range for 5 to 30 weight% in the composition for hair treatment, and can be mix | blended with the medium which is easy to apply | coat to hair. Such a medium is a component used for cosmetics, quasi-drugs and the like, and is configured according to the purpose. For example, surfactants, fats and oils, waxes, hydrocarbons, fatty acids, higher alcohols, alcohols other than higher alcohols, esters, silicone oils, polyhydric alcohols, sugars, polymers, plant extracts, hydrolysates, metal ions Examples thereof include a sequestering agent and a pH adjusting agent.

  Examples of the surfactant include an anionic surfactant, a cationic surfactant, a nonionic surfactant, and an amphoteric surfactant.

  Anionic surfactants include coconut oil fatty acid potassium, triethanolamine laurate, magnesium stearate, calcium myristate, polyoxyethylene lauryl ether acetic acid, sodium polyoxyethylene lauryl ether acetate, sodium stearoyl lactate, calcium stearoyl lactate, Palm oil fatty acid sarcosine, lauroyl sarcosine triethanolamine, coconut oil fatty acid acyl glutamic acid, coconut oil fatty acid sodium acyl glutamate, sodium lauroyl glutamate, coconut oil fatty acid sodium methylalanine, lauroyl methylalanine triethanolamine, coconut oil fatty acid methyl taurine potassium, myristoyl Sodium methyl taurate, sodium alkane sulfonate, sodium tetradecene sulfonate Lithium, Dioctyl sodium sulfosuccinate, Sodium lauryl sulfate, Triethanolamine lauryl sulfate, Sodium cetyl sulfate, Sodium oleyl sulfate, Sodium polyoxyethylene lauryl sulfate, Sodium lauryl phosphate, Diethanolamine cetyl phosphate, Sodium polyoxyethylene oleyl ether phosphate, Examples thereof include polyoxyethylene oleyl ether phosphate triethanolamine.

  Examples of cationic surfactants include dioctylamine, dimethylstearylamine, diethylaminoethylamide stearate, lauryltrimethylammonium chloride, cetyltrimethylammonium chloride, cetyltrimethylammonium bromide, alkyl (20-22) trimethylammonium chloride, distearyl chloride. Examples include dimethylammonium chloride, tri (polyoxyethylene) stearylammonium chloride (5EO), benzalkonium chloride, myristyldimethylbenzylammonium chloride, laurylpyridinium chloride, cetylpyridinium chloride, and methylbenzethonium chloride.

  Amphoteric surfactants include 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, alkyldiaminoethylglycine hydrochloride, coconut oil fatty acid acyl-N-carboxyethyl-N-hydroxyethylethylenediamine disodium, lauryl Examples include sodium aminopropionate, coconut oil fatty acid acyl-N-carboxyethyl-N-hydroxyethylenediamine sodium, lauryldimethylaminoacetic acid betaine, stearylaminoacetic acid betaine, lauric acid amidopropylacetic acid betaine, and lauryl hydroxysulfobetaine.

  Nonionic surfactants include polyoxyethylene cetyl ether, polyoxyethylene oleyl ether, polyoxyethylene octyldodecyl ether, polyoxyethylene behenyl ether, polyoxyethylene octyl phenyl ether, polyoxyethylene (2) stearyl ether, Polyoxyethylene (20) stearyl ether, polyoxyethylene polyoxypropylene decyl tetradecyl ether, polyoxyethylene polyoxypropylene lauryl ether, polyethylene glycol monolaurate, diethylene glycol stearate, self-emulsifying polyethylene glycol monostearate (2), Diethylene glycol distearate, polyoxyethylene (20) sorbitan monooleate, polyoxyethylene (20) Palm oil fatty acid sorbitan, polyoxyethylene (20) sorbitan oleate, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil, polyoxyethylene sorbite monolaurate, polyoxyethylene oleate (3) sorbite, parent Oil type glyceryl monostearate, palm oil fatty acid glyceryl, sorbitan monolaurate, sorbitan monomyristate, poly (2-10) glyceryl monooleate, diglyceryl isopalmitate, sucrose ester of coconut oil fatty acid, alkyl glucoside, coconut oil Examples thereof include alkyl dimethylamine oxide and oleyl dimethylamine oxide.

  Examples of the fat include wheat germ oil, rice bran oil, shea butter, macadamia nut oil, meadow home oil, and egg yolk oil.

  Examples of the waxes include jojoba oil, beeswax and carnauba wax.

  Examples of the hydrocarbon include light isoparaffin, light liquid isoparaffin, squalane, ceresin, paraffin, microcrystalline wax, liquid paraffin, liquid isoparaffin, petrolatum and the like.

  Examples of the fatty acid include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid, 12-hydroxystearic acid, and undecylenic acid.

  Examples of the higher alcohol include cetyl alcohol, stearyl alcohol, oleyl alcohol, behenyl alcohol, myristyl alcohol, isostearyl alcohol, lauryl alcohol, cetostearyl alcohol and the like.

  Examples of alcohols other than higher alcohols include lower alcohols such as ethyl alcohol, propyl alcohol, and butyl alcohol, and animal and plant sterols.

  Esters include isopropyl myristate, myristyl myristate, stearyl stearate, isostearyl laurate, octyldodecyl oleate, hexyl 2-ethylhexanoate, di-2-ethylhexyl succinate, diethoxyethyl succinate, phytosteryl isostearate Etc.

  Silicone oils include decamethyltrisiloxane, methylpolysiloxane, highly polymerized methylpolysiloxane, decamethylcyclopentasiloxane, polyoxyethylene / methylpolysiloxane copolymer, aminoethylaminopropylsiloxane / dimethylsiloxane copolymer emulsion, Examples thereof include aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer, trimethylsiloxysilicic acid, and methylhydrogenpolysiloxane.

  Examples of the polyhydric alcohol include ethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, glycerin, polyglycerin, and 1,3-butylene glycol.

  Examples of the saccharide include sorbitol and trehalose.

  Polymers include sodium polyacrylate, carboxyvinyl polymer, hydroxyethylcellulose, polyvinylpyrrolidone, carboxymethylcellulose, pullulan, cationized cellulose, guar gum, acrylic acid / methacrylic alkyl copolymer, polyoxyethylene sorbitol tetraoleate, polyvinylpyrrolidone , Polyacrylamide, maleic acid copolymer, polyoxyethylene polyoxypropylene copolymer and the like.

  Examples of plant extracts include avocado extract, almond extract, licorice extract and the like. Examples of the hydrolyzate include hydrolyzed keratin and hydrolyzed collagen.

  Examples of the sequestering agent include alanine, edetic acid, disodium edetate, and pentasodium diethylenetriaminepentaacetic acid.

  The pH of the hair treatment composition of the present invention is not particularly limited, but is preferably pH 3 to pH 10. When the pH is less than 3, the reaction time becomes long and the treatment efficiency tends to be poor, and when the pH exceeds 10, the hair tends to be damaged. Examples of the pH adjuster include acids such as citric acid, phosphoric acid, lactic acid, acetic acid, malic acid, propionic acid, capric acid, benzoic acid, succinic acid, adipic acid, ammonia, sodium hydroxide, monoethanolamine, Examples include bases such as arginine.

  The dosage form of the hair treatment composition is preferably in the form of cream or gel in consideration of operability to the hair. Those whose viscosity is extremely low or extremely high are not preferable in terms of operability. Preferably, it is 500 mPa · s to 80,000 mPa · s, more preferably 500 mPa · s to 50,000 mPa · s, and 1,000 mPa · s to 50,000 mPa · s dripping from the hair when applied. Especially preferred without. Here, the viscosity in the present invention is a value measured by a B-type viscometer VISCOMETER VT-20 (manufactured by Toki Sangyo Co., Ltd.) at 25 ° C.

  The hair treatment composition of the present invention is used for hair after applying the first hair straightening composition containing at least one reducing agent. The timing of use is not particularly limited as the time range because it depends on the nature of the hair to be applied and the climate, etc., but it is applied to the hair after a lapse of time generally called overtime, which is too soft, This is preferable in that the effect of the present invention can be obtained effectively. The hair treatment composition of the present invention may be applied to hair in a state where the first hair straightening composition containing a reducing agent is applied, or for hair straightening containing the reducing agent. You may carry out after fully washing a 1st agent composition with water. Moreover, not only when the whole hair becomes overtime, but also when the hair is partially overtime, the hair treatment composition of the present invention can be used for the portion.

  In order to return the hair to an optimal softened state, the hair treatment composition of the present invention is preferably left for at least 2 minutes after being applied to the hair. The leaving step can be performed at room temperature.

  Further, after the chemical solution is washed away from the hair that has been returned to the optimum softened state by the hair treatment composition of the present invention, water is sufficiently removed, the hair is straightened by a high-temperature hair-styling iron having a surface temperature of 60 ° C to 220 ° C. Can be processed. When a treatment with a high-temperature hairstyling iron is performed without using a hair treatment composition, extreme shrinkage occurs at the heat-treated portion.

Hereinafter, although the composition for hair treatment of this invention and its processing method are demonstrated in detail based on an Example, this invention is not limited to these Examples. In addition, Example 1 and Example 4 are compositions outside this invention, and should be understood as a reference example.

  The first hair straightening composition shown in Table 1 and the hair treatment composition of the present invention shown in Table 2 were prepared by the following procedure. First, component A and component C were each heated to 80 ° C. to completely dissolve the components, and then the heating was stopped and both components were mixed and cooled with stirring. Then, the liquid temperature of the liquid mixture was lowered to 50 ° C., and component B previously mixed at room temperature was added and mixed to prepare. In Tables 1 and 2, the unit is parts by weight unless otherwise specified. Moreover, in Table 1 and Table 2, 100 with purified water means that purified water was added to make the entire mixed solution containing the A component and the B component 100% by weight.

  The pH of the prepared solution was measured by pH METER HM-30S (manufactured by Toa Denpa Kogyo Co., Ltd.). The viscosity was measured with a B-type viscometer VISCOMETER VT-20 (manufactured by Toki Sangyo Co., Ltd.). Both measurement temperatures were 25 ° C.

(Selection of target hair)
As healthy hair for evaluation, Japanese female hair that was not subjected to chemical treatment such as color and perm was used, and 26 hair bundles having a length of 20 cm and 1 g were prepared from the same person.

  The damaged hair is obtained by treating the above-mentioned hair bundle with decolorization treatment using a mixed solution of ammonia and hydrogen peroxide in the next step.

(Damaged hair production process)
A solution of 8% ammonia and a solution of 6% hydrogen peroxide were prepared. These two solutions were mixed at a ratio (volume ratio) of 1: 1, hair was immersed in the solution, allowed to stand at 35 ° C. for 30 minutes, washed with water, and dried to be decolorized. This process was repeated twice to produce damaged hair.

(Treatment method using hair treatment composition)
Treatment was performed as follows on the hair bundle of healthy hair and the damaged hair bundle.
Treatment Examples 1 to 4: The reducing agent 1 was applied to the healthy hair and left for 10 minutes, 20 minutes, 30 minutes, and 40 minutes in order, and then washed with water.
Treatment Example 5: After applying the reducing agent 1 to the above healthy hair and leaving it for 30 minutes, apply the cream of Comparative Example 1 and let it blend for 10 minutes. Washed away.
Treatment Examples 6 to 8: After applying the reducing agent 1 to the above healthy hair and leaving it for 30 minutes, apply each of the creams of Examples 2 to 4 in order and let it blend for 10 minutes. The drug was washed away.
Treatment Example 9: The reducing agent 1 was applied to healthy hair and allowed to stand for 30 minutes, and then the liquid of Example 5 was applied, thoroughly blended, allowed to stand for 10 minutes, and then all chemicals were washed away with water.
Treatment Example 10: After applying the reducing agent 1 to healthy hair and leaving it for 30 minutes, after rinsing the reducing agent with water, applying the cream of Example 3 and leaving it for 10 minutes, All drugs were washed away.
Treatment Examples 11 to 14: The reducing agent 2 was applied to damaged hair and left for 10 minutes, 20 minutes, 30 minutes, and 40 minutes in order, and then washed with water.
Treatment Example 15: The reducing agent 2 was applied to damaged hair and allowed to stand for 30 minutes, then the cream of Comparative Example 1 was applied, allowed to blend well, allowed to stand for 10 minutes, and then all chemicals were washed away with water.
Treatment Examples 16 to 18: After applying the reducing agent 2 to damaged hair and leaving it for 30 minutes, applying each of the creams of Examples 1 to 3 and allowing them to blend well for 10 minutes, all the drugs in water Washed away.
Treatment Examples 19 to 22: The reducing agent 3 was applied to damaged hair and left for 10 minutes, 20 minutes, 30 minutes, and 40 minutes in order, and then washed with water.
Treatment Example 23: The reducing agent 3 was applied to damaged hair and allowed to stand for 30 minutes, then the cream of Example 3 was applied, allowed to blend well, allowed to stand for 10 minutes, and then all chemicals were washed away with water.

(Judgment method)
Observation of state: The beauty technician determines the degree of softening of the treated hair bundle. Next, after drying the treated hair bundle, press treatment was performed with a high-temperature hair-styling iron (180 ° C.), and the hair state after applying the oxidizing agent was observed.

The softened state of the hair was evaluated in the following three stages.
A: Good softening state B: Slight softening too much C: Softening too much

Moreover, the finish was evaluated in the following four stages.
a: Smooth and not crimped b: Slightly crimped c: Shrinkage as a whole d: Shrinked in strength

  The evaluation results of the softened state and the finish are shown in Tables 3 to 5.

Determination of elastic modulus: The elastic modulus was measured in order to quantify the degree of softening of the treated hair bundle. The elastic modulus is obtained from the slope of the tangent line of the hook region, which is the rising portion of the strong elongation curve obtained by stretching the hair.

(Preparation of measurement samples and measurement of hair elongation)
Preparation of a sample for measurement and measurement of strong elongation of hair were performed according to the following procedure.
1. One hair is taken out from each of the produced hair bundles, 2 cm apart, and both ends thereof are sandwiched and fixed with an adhesive tape.
2. The cross-sectional area of each hair is measured with a hair outer diameter measuring device KL151A (manufactured by Anritsu).
3. These treatments are performed on the sample hair for measurement.
4). The sample after the treatment is fixed at a predetermined position of Tensilon UTM-II-20 (Orientec Co., Ltd.), the extension speed is set to 2 mm / min, and the sample is extended in the air.

  A series of these measurement operations were performed, and the elastic modulus per unit area of hair was calculated from the slope of the rising tangent of the strong elongation curve obtained thereby.

  From Tables 3 to 5, the hair treated with the hair treatment compositions of Examples 1 to 5 recovers to a softened state in which the reduced state and elastic modulus are optimal regardless of whether the hair is damaged or not, and the finish is also finished. It was excellent.

Claims (3)

A hair treatment composition for use on hair after applying a first hair straightening agent containing at least one reducing agent, comprising 10 % by weight to 25 % by weight of disulfide , and hair treatment composition pH is Ru der 3 to 6.4. The hair treatment composition according to claim 1, wherein the disulfide is dithiodiglycolic acid or a salt thereof. A hair straightening treatment method comprising applying a high-temperature hairstyling iron having a surface temperature of 60 ° C to 220 ° C after using the hair treatment composition according to claim 1 or 2.