JP5073243B2 - Hair treatment method - Google Patents

Description

  The present invention relates to a hair treatment method, and more particularly to a hair deformation treatment method.

  Conventionally, hair deformation treatments such as hair straightening treatment, permanent wave treatment, curling treatment and the like using keratin reducing compounds such as thioglycolic acid, cysteine, and salts thereof as a reducing agent have been known. However, in the hair deformation treatment with these reducing agents, the hair is damaged by the treatment, and treatment must be performed after the treatment. Further, in hair deformation treatment, a method of increasing the amount of reducing agent added or increasing the hair deformation treatment agent twice in order to further enhance the hair deformation power has been proposed. Will become bigger. Furthermore, in general, in the hair deformation treatment for straightening curly hair, so-called curly hair straightening treatment, after applying the first agent for straightening curly hair to the curly hair, it is allowed to stand, rinse, dry with a dryer, etc. It was a process of using an iron for making it straight and treating with two agents. However, there are many cases where this method cannot be sufficiently straightened.

  On the other hand, a permanent treatment agent to which amino-modified silicone or the like is added has been proposed in order to compensate for damage to the hair after treatment and in the hope of a treatment effect on the hair (Patent Document 1, Patent Document 2, Patent Document). 3). However, in these inventions, the treatment effect is not sufficient compared to the damage of hair, and it is glossy and moisturized to the hair and can give a calm and coherent feeling. There wasn't.

  Moreover, cysteamine is used as a reducing agent, and a treatment agent for straightening hair that further contains amino-modified silicone (see Patent Document 4), cysteamine is used as a reducing agent, and oils such as paraffin and stearyl stearate are further added. Permanent wave agents have also been proposed (see Patent Document 5). However, when cysteamine is used as a reducing agent, although there is little damage to the hair, there is a problem of odor during treatment, and further, there is a problem that the odor remains in the hair after treatment.

JP 2003-226623 A JP-A-5-78226 JP 2003-238368 A JP 2004-26770 A JP 2003-40741 A

  In the present invention, the hair deformation treatment method refers to a hair straightening treatment, a permanent wave treatment, a curling treatment method, or the like using a hair deforming agent. In the hair deformation treatment method, elasticity is obtained while preventing hair damage. And a hair deformation treatment method that exhibits a curly hair straightening effect that can form a wave that has a good feel and a high wave power, or that can straighten various curly hairs while preventing hair damage. With the goal.

The present invention relates to a hair treatment agent (hereinafter referred to as “first hair treatment agent”) containing at least 0.5 to 3% by weight of cysteamine, 1 to 6% by weight of amino-modified silicone, an oil agent and a thickening substance and having a pH of 7.5 to 11. A hair treatment method characterized in that the hair treatment agent is applied to the hair and allowed to stand for a certain period of time, and then washed with water. Could be achieved.
That is, the first feature of the present invention is that cysteamine is blended at a specific ratio and amino-modified silicone is blended at a specific ratio as a step before performing the hair deformation treatment, and further an oil agent and a thickening substance are blended. The treatment with the first hair treatment agent having a specific structure is performed, and the second feature of the present invention is that a predetermined time is set after the treatment with the first hair treatment agent, and further washing with water is performed after the fixed time. It is characterized by performing.

It is presumed that the hair treatment method of the present invention can achieve the above-described object by adopting the above-described configuration for the following reasons.
The hair is treated with the first hair treatment agent before the hair deformation treatment to soften the hair by reducing it to some extent, and the hair deformation treatment agent used in the next hair deformation treatment can easily penetrate into the hair, By attaching amino-modified silicone and oil to the hair surface, the vicinity of the hair surface and the inside of the hair, the hair deformation treatment agent used in the next hair deformation treatment reduces damage to the hair and has a high deformation maintaining power. It becomes possible to deform the hair.

  Further, when the hair deformation treatment in the subsequent process is performed after the water washing process, the thickening material as a constituent of the first hair treatment agent is washed out from the hair by the water washing process, and the hair deforming agent used in the subsequent process. The hair deformation effect by the hair deforming agent is sufficiently achieved without the penetration of the hair into the hair being inhibited by the thickening substance. Furthermore, cysteamine, amino-modified silicone, and oil can be sufficiently penetrated into the hair by leaving for a certain period of time after the treatment of the first hair treatment agent, and the intended hair treatment of the first hair treatment agent as described above. The effect can be achieved sufficiently.

Therefore, the first hair treatment agent that can be used in the hair treatment method of the present invention contains cysteamine, amino-modified silicone, an oil agent and a thickening substance, and is allowed to stand for a certain period of time after the treatment of the first hair treatment agent. As long as the thickening substance is washed out by washing with water and the hair treatment effect intended for the subsequent hair deformation treatment can be sufficiently achieved, for example, Japanese Patent Application No. 2005 previously filed by the present applicant. The hair quality improving agent proposed in -054118 is mentioned.
Similarly, the standing time and washing conditions can be appropriately determined within a range in which the intended hair treatment effect of the first hair treatment agent can be achieved. For example, the standing time is 2 to 15 minutes, and the water washing conditions, for example, the water washing time, can be appropriately determined in consideration of the ability to wash out the thickening substance of water to be used, for example, the water temperature.

As the cysteamine, cysteamine (HS—CH ₂ —CH ₂ —NH ₂ ) or a salt acceptable as a hair cosmetic, for example, cysteamine hydrochloride, citrate, hydrobromide, acetate, etc. Can be used. These can be used alone or in combination of two or more. The cysteamine is preferably contained in an amount of 0.5 to 3% by weight, preferably 1.3 to 2.5% by weight. If the amount of cysteamine is less than the above range, the purpose of softening the hair with the first hair treatment agent cannot be achieved, and conversely, the amount of cysteamine is within the above range. If it is too much, damage to the hair will increase.

  The amino-modified silicone is composed of, for example, an aminoethylaminopropylsiloxane / dimethylsiloxane copolymer and / or an aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer, and the amino equivalent is about 1800 to 6400 at 25 ° C. The thing of the range whose viscosity measured with the B-type viscometer is 700-1200 mPa * s is mentioned. These amino-modified silicones can be appropriately selected from known ones (for example, commercially available products such as SM8704C, SF8452C, SF8457C manufactured by Toray Dow Corning Silicone Co., Ltd.). In addition, the amino-modified silicone is contained in an amount of 1 to 6% by weight, preferably 2 to 4% by weight, and can impart good elasticity to the hair and good finishing touch. This is preferable. When the content of the amino-modified silicone in the first hair treatment agent exceeds the upper limit of the blending amount, the finish is sticky.

  The oil agent is generally widely used as a base for hair cosmetics. Examples of such oil agents include hydrocarbons such as petrolatum, microcrystalline wax, paraffin and ceresin having a conditioning effect; waxes such as beeswax, lanolin, reduced lanolin, candelilla wax, jojoba oil, whale fat; castor oil , Palm oil, palm kernel oil, coconut oil, cocoa butter, shea butter, cocoa butter, tree wax, horse oil, beef tallow, milk fat, fats and oils such as hydrogenated oil; lauric acid, myristic acid Higher fatty acids such as lanolin fatty acid; esters such as myristyl myristate, cetyl myristate, cetyl palmitate, stearyl stearate, lanolin fatty acid octyldodecyl, and the like. These oil agents preferably have a melting point in the range of 30 to 60 ° C., and can be used alone or in combination of two or more. The oil is usually contained in an amount of 0.5 to 6% by weight, preferably 1 to 6% by weight.

  When the blending amount of the oil agent of the first hair treatment agent is within the above range, the oil agent is adsorbed and remains on the hair surface and inside the hair even after the first hair treatment agent is applied and washed with water. It is glossy and moisturized, and can give a coherent unity. However, when the blending amount of the oil agent of the first hair treatment agent is a small amount outside the above range, the above effect cannot be achieved, and conversely, when the amount is large outside the above range. Will give the hair a sticky feeling.

  The thickening substance washed out by washing with water is a component that imparts viscosity to the first hair treatment agent. For example, when the first hair treatment agent is an emulsion (cream), the emulsion (cream) is usually gelled with a higher alcohol and a surfactant, such as cetyl alcohol and stearyltrimethylammonium chloride, PEG-60 hydrogenated castor oil. Although the cream is formed, it is the component imparting the above-mentioned viscosity that is washed out by the water washing. However, the thickening material washed away in the present invention is not limited to higher alcohols and surfactants, and thickening materials that can impart viscosity to the first hair treatment agent, such as carboxyethyl cellulose, xanthan gum, carboxyvinyl polymer, Thickeners such as ethylene / acrylic acid copolymers are also targets to be washed away with water.

  In the first hair treatment agent, other components other than the components described above can be further blended in an amount within a range that does not impair the effects of the present invention. Examples of other components that can be blended include surfactants such as cationic surfactants, anionic surfactants, nonionic surfactants, and amphoteric surfactants, higher alcohols, proteins, polypeptides, amino acids, and pyrrolidone carboxylic acids. Hair derivatives such as acid derivatives, pseudoceramides, polysiloxane, methylpolysiloxane, dimethylpolysiloxane (hereinafter also referred to as dimethylsilicone), methylphenylpolysiloxane, methylcyclopolysiloxane, highly polymerized methylpolysiloxane, polyether-modified silicone Conditioning agents such as non-amino-modified silicones such as polyoxyethylene / methylpolysiloxane copolymer, cationized cellulose, cationized guagam, cationized polymer, cationized resin, natural water-soluble polymers Wetting agents such as glycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, stabilizers such as ascorbic acid, erythorbic acid, edetate, etidronate, phenacetin, salicylic acid, antiseptics such as methylparaben, sodium benzoate Agents: hair nourishing agents, ultraviolet absorbers, pigments, pearl agents, fragrances and the like.

  The pH of the first hair treatment agent is 7.5 to 11, preferably 8.5 to 9.2. When the pH is low outside the range, the hair deforming force formed by the hair deforming agent is low, and conversely when the pH is high outside the range, the hair is damaged. The pH can be adjusted with a known alkali component. The alkali component may be any one that is generally acceptable for hair cosmetics, for example, ammonia; amino alcohols such as monoethanolamine and diethanolamine; basic amino acids such as arginine; salts such as sodium carbonate and sodium bicarbonate. Sodium hydroxide; potassium hydroxide and the like. These can be used alone or in combination of two or more.

  In general, the first hair treatment agent preferably contains water from the viewpoint of facilitating dissolution or dispersion of the above-described components, viscosity adjustment or concentration adjustment of the entire composition, and the like. Although it does not specifically limit as water which can be used for this invention, Purified water, such as ion-exchange water and distilled water, is mentioned preferably. It is desirable that water is contained in the first hair treatment agent in an amount of usually 30 to 90% by weight, preferably 40 to 80% by weight.

  The first hair treatment agent can be produced in various dosage forms such as cream, gel, foam, spray, mist, and the like by stirring, mixing, heating, dissolving, etc., with the above-mentioned components by known methods. However, an emulsion (cream) is particularly preferable.

  The treatment with the first hair treatment agent, the standing for a predetermined time, and the hair deformation treatment performed after washing with water are conventionally performed using a conventionally known hair deformation treatment method, for example, using thioglycolic acid, cysteine, cysteamine, or salts thereof as a reducing agent. It can be performed under known hair deformation treatment conditions.

  According to the present invention, there is provided a hair deformation treatment method capable of forming a hair deformation having good elasticity and touch feeling and having a high hair deformation force while preventing damage to the hair associated with a hair deformation treatment operation using a reducing agent. Could be provided.

  EXAMPLES Hereinafter, although this invention is demonstrated further more concretely based on an Example, this invention is not limited to these Examples. In the following examples, the number of test panelers that have undergone hair quality improvement processing has reached 100 or more.

Examples 1-7
A hair of 25 cm in length and 4 g in weight obtained from the same person is shampooed, towel dried, and then the first hair treatment agent obtained by mixing each component in the components and proportions shown in Table 1 is applied to the hair. After standing for 5 minutes, it is washed with water and subjected to normal permanent wave treatment (hair is wound into a lot and one permanent wave agent is applied to the hair wound around the lot, or one permanent wave agent is applied to the hair and this permanent wave 1 is applied. The hair to which the agent was applied was wound around a lot and allowed to stand, and then treated with two permanent waves. Table 1 shows the evaluation results of the hair treatment in terms of wave strength, elasticity, damage, and touch feeling. These evaluations were conducted by a specialized tester (beautician).

Examples 8-11
The same procedure as in Examples 1 to 7 was performed except that a drug having the same composition as the drug of Example 4 was applied and the standing time was changed to 1, 2, 15 and 20 minutes. Table 2 shows the evaluation of the results of the hair treatment with respect to the strength, elasticity, damage, and touch feeling of the wave. These evaluations were also conducted by a specialized tester (beautician). From the results of Table 1 and Table 2 below, the standing time after the treatment of the first hair treatment agent is preferably 2 to 15 minutes.

A, B, C, and D in the preceding table indicate the type of reducing agent used as the hair deforming agent to be used, A is sulfite, B is an aqueous solution of ammonium thioglycolate (containing 50% by weight of thioglycolic acid) , C represents cysteine hydrochloride, D represents cysteamine hydrochloride solution (containing 75% by weight of cysteamine), and the concentration of each reducing agent is 0.2 mmol / L. The pH of each reducing agent was adjusted to 9.0. From the results in the previous table, B, C and D are preferable as the reducing agents.
The evaluation of the strength, elasticity, damage and touch of the wave in the previous table was performed as follows.
1. Wave Strength The evaluation of the strength of the wave evaluated how much the treated hair became stronger by visual evaluation as compared with normal hair deformation treatment. The normal hair deformation treatment refers to the case where the hair deformation treatment is performed only with a conventionally known hair deformation agent without performing the pretreatment with the first hair treatment agent. )
◎ Takes well, ○ takes, △ takes a little, no change.
2. It was evaluated how much the elasticity of the hair was felt when the elastically treated hair was touched or bent.
◎ feel very, ○ feel a little, △ feel a little, do not feel.
3. The roughness when the damaged hair was visually observed was evaluated.
◎ There is no crust, ○ There is almost no crust, △ There is a little crust, ・ It is crusted.
4). The touch of the touched hair was good and the smoothness was evaluated.
◎ Smooth and smooth, ○ Smooth and smooth, △ Slightly smooth, and ・ Smooth and smooth.

Comparative Examples 1-7
A hair treatment agent was prepared in the same manner as in Examples 1 to 11 with the components and ratios shown in Table 3 below, and the hair treatment was performed using the hair treatment agent, and the treatment results were the same as in the previous examples. And evaluated. The evaluation results are shown in Table 3 below.

  From the evaluation results of Table 3, in Comparative Examples 1 and 2, the cysteamine content of the first hair treatment agent is outside the range of 0.5 to 3.0%, the wave force is reduced, and damage progresses. In Comparative Example 3, the amino-modified silicone of the first hair treatment agent is not contained, and there is no elasticity, and in Comparative Example 4, the pH of the first hair treatment agent is lower than 7 and the wave power is low. In Comparative Example 5, the pH of the first hair treatment agent is higher than 11 and hair damage proceeds. In Comparative Example 6, when the first hair treatment agent is not cysteamine as a reducing agent, the wave Strength, elasticity, damage, touch and any effects are reduced. In Comparative Example 7, the first hair treatment agent was not applied and washed away after being left, so when performing normal hair deformation treatment Occur such as a decrease in permeability, it is understood that the intensity of the wave drops significantly.

Example 12 and Comparative Examples 10-13
Shampoo hair of 25cm length and 4g weight obtained from the same person, towel dry, apply the first hair treatment agent obtained by mixing each component in the components and proportions shown in Table 4 to the hair, It was left for the standing time shown in Table 4. After standing, it was washed with water except for Comparative Example 11, and after washing with water, it was used as Compound B which is a curly hair straightening reducing agent and subjected to normal hair straightening treatment. The results of the above-mentioned curly hair straightening treatment are shown in Table 4 below for wrinkle growth, crustiness, bristles, and touch.

The elongation, crispness, bristles, and texture shown in Table 4 were evaluated as follows.
(1) Wrinkle elongation It was evaluated how much stronger it was compared with normal curly hair straightening treatment.
◎ It grows well, ○ It grows, △ It grows a little, ・ It doesn't change.
The roughness when visually observed was evaluated.
◎ There is no crust, ○ There is almost no crust, △ There is a little crust, ・ It is crusted.
(3) Coarseness of the hair tips The condition of the hair tips when evaluated was evaluated.
◎ Very lumpy, ○ Slightly lumpy, △ Slightly lumpy, and no lumpy (4) Touch The fingering and smoothness of the treated hair were evaluated.
◎ Smooth, smooth, ○ Slightly smooth, △ Slightly smooth, ・ Smooth, smooth.

Claims (6)

A hair treatment agent (hereinafter referred to as the first hair treatment agent) containing at least 0.5 to 3% by weight of cysteamine, 1 to 6% by weight of amino-modified silicone, an oil agent and a thickening substance and having a pH of 7.5 to 11 the) that was washed with water after left for a certain time by applying to the hair, after the water washing, the hair deformation first agent was applied to the hair, and then characterized by hair deformation treatment for imparting hair deformation second agent Hair treatment method. The hair treatment method according to claim 1, wherein the leaving time is 2 to 15 minutes. The hair treatment method according to claim 1, wherein the amino-modified silicone is an aminoethylaminopropylsiloxane / dimethylsiloxane copolymer and / or an aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer. The hair treatment method according to any one of claims 1 to 3, wherein the thickening substance blended in the first hair treatment agent is removed by washing with water. The hair deformation treatment is a hair straightening treatment, a permanent wave treatment, or a curling treatment performed by applying a hair straightening agent, a permanent wave agent, or a curling agent to the hair as a hair deforming agent. The hair processing method in any one of -4. The hair treatment method according to any one of claims 1 to 5, wherein the hair deformation treatment is performed using thioglycolic acid, cysteine, cysteamine, or a salt thereof as a reducing agent.