JP5062718B2 - How to improve the condition of the scalp - Google Patents

Description

  The present invention relates to a method for improving the condition of the scalp by removing unnecessary lipids (such as sebum) from the scalp.

  Along with the generalization of hair color, the accumulation of hair damage has become serious, and in recent years, in order to maintain healthy hair, first, the condition of the scalp has been improved. Various methods for caring the scalp have been proposed for people who have problems such as thinning hair and lack of elasticity and stiffness. For example, in Non-Patent Document 1, information on scalp care is featured, and various scalp care methods centering on massage are described therein.

  By the way, it has been proposed that it is preferable to remove lipids (sebum etc.) adhering to the scalp (especially pores) especially when focusing on hair growth promotion. However, since it is difficult to remove lipids in the pores by washing with a normal shampoo agent, a technique for removing these lipids well is required to improve the condition of the scalp.

  For example, Patent Document 1 discloses a scalp and pores using a cleansing agent composed of a mixture of a first agent having an amino acid surfactant as a main active ingredient and a second agent having a papain enzyme as a main active ingredient. A cleansing step for cleansing, a shampoo step for removing scalp, pores and hair stains, a first hair-growth treatment step in which hinokitiol is the main active ingredient, and a first hair-growth treatment step in which the entire scalp is applied, and hinokitiol as the main active ingredient There is described a hair growth promotion method comprising a second hair growth treatment step of applying a second hair growth agent to a specific part of the scalp and a treatment step of applying a treatment agent containing keratin as a main active ingredient to the hair. Patent Document 1 describes that dirt such as sebum adhering to the scalp and pores is lifted by the cleansing process using the above-described cleansing agent, and can be washed away by the next shampoo process.

  Patent Document 2 discloses a cleansing step for cleansing the scalp and pores, a shampooing step for removing dirt from the scalp, pores and hair, and a main active component for hinokitiol, using a cleansing agent containing jojoba oil as the main active component. A first hair growth treatment step of applying the first hair growth agent to the entire scalp, a second hair growth treatment step of applying a second hair growth agent comprising hinokitiol as a main active ingredient to a specific part of the scalp, and keratin mainly. A hair growth promoting method comprising a treatment step of applying a treatment agent as an active ingredient to hair is described. Similarly to the technique of Patent Document 1, the technique of Patent Document 2 also raises dirt such as sebum adhering to the scalp and pores by the cleansing process using the above-described cleansing agent, and this is washed away by the next shampoo process. It is said.

Japanese Patent No. 3172481 Japanese Patent No. 3172482 marcel, 2005, January issue, p. 16-37

  Although the techniques of Patent Document 1 and Patent Document 2 have certain effects, they also have the following problems. In the technique of Patent Document 1, since papain enzyme has a problem in stability and is in a powder form, it is necessary to prepare a cleansing agent at the time of use, and there is a problem that it is troublesome for consumers to handle. . In addition, there is a drawback that a feeling of tension is generated on the scalp unique to enzymes.

  Also in Patent Document 2, jojoba oil according to the cleansing agent has an effect of imparting a smooth feel to the scalp, but is insufficient in improving the condition of the scalp.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method capable of satisfactorily removing unnecessary lipids from the scalp and improving the state of the scalp.

The method of the present invention that has achieved the above-mentioned object is a method for removing unnecessary lipids from the scalp to improve the condition of the scalp, comprising the following steps (1) to (3): This is a method for improving the condition of the scalp.
Step (1): A scalp cleaning composition containing 50 to 97% by weight of rice bran oil and 3 to 50% by weight of a nonionic surfactant and substantially free of water is adapted to dry scalp. Process.
Step (2): A step of washing the scalp and hair with a shampoo containing at least a surfactant and water, followed by washing the scalp and hair with water after step (1).
Step (3): A step of applying a treatment agent containing at least a cationic surfactant and water to the hair after the step (2), and subsequently washing and drying the hair.

  In the method of the present invention, first, in the step (1), by using the scalp washing composition in a dry state, lipids (sebum, etc.) attached to the scalp (especially pores) are peeled off from the scalp and lifted up. The lipid peeled from the scalp is washed away by washing with shampoo and water in 2), and the condition of the hair is improved by using the treatment agent in step (3). In the method of the present invention, unnecessary lipids can be removed from the scalp through these series of steps to improve the condition of the scalp and maintain a healthy state of the scalp. In addition, it is possible to suppress the deterioration of the hair condition associated with the removal of lipids from the scalp.

  Moreover, it is preferable that this invention method has the process (4b) of apply | coating a hair growth agent to a scalp after the process (3), or the process (4b) of applying a scalp moisturizer to a scalp. The step (4a) can promote hair growth, and the step (4b) can moisturize the scalp.

  According to the present invention, unnecessary lipids can be removed cleanly from the scalp (especially pores), and the scalp condition can be improved satisfactorily.

  In the step (1) of the present invention, the scalp washing composition containing 50 to 97% by weight of rice bran oil and 3 to 50% by weight of nonionic surfactant and substantially free of water was dried. This is a process of applying an appropriate amount to the scalp and making it acclimatize. By this process, the lipid adhering to the scalp (especially pores) is peeled off from the scalp and lifted up.

  The rice bran oil contained in the scalp washing composition has a function of removing lipids from the scalp safely and effectively and preventing the scalp from being rough. The content of rice bran oil in the scalp cleaning composition is 50% by mass or more, preferably 70% by mass or more, and 97% by mass or less, preferably 90% by mass or less. If the amount of rice bran oil in the scalp cleaning composition is too small, the effect of removing lipids from the scalp cannot be secured sufficiently. If it is too much, rice bran oil may remain on the scalp, resulting in stickiness.

  Moreover, the scalp washing composition contains a nonionic surfactant with rice bran oil. The content of the nonionic surfactant in the scalp cleaning composition is 3% by mass or more, preferably 10% by mass or more, and 50% by mass or less, preferably 30% by mass or less. If the amount of the nonionic surfactant in the scalp cleaning composition is too small, the content of rice bran oil will be too high, and rice bran oil may remain on the scalp, resulting in stickiness. Moreover, when there is too much quantity of the nonionic surfactant in the composition for scalp washing | cleaning, content of rice bran oil will become too small and it may become impossible to ensure the effect of removing lipid from a scalp.

  The type of nonionic surfactant used in the scalp cleaning composition is not particularly limited, but sorbitan fatty acid esters such as coconut oil fatty acid sorbitan and sorbitan monolaurate; polyglyceryl fatty acid esters such as polyglyceryl caprylate and polyglyceryl laurate; Glycerin fatty acid esters such as glyceryl monostearate are preferred, and these may be used alone or in combination of two or more. Among these, the sorbitan fatty acid ester, the glycerin fatty acid ester, and combinations thereof are particularly preferable because they have an action of stabilizing the dosage form over time.

  The scalp cleaning composition is substantially free of water, but “substantially free of water” as used in the present invention means that the scalp cleaning composition adheres to each component constituting the scalp cleaning composition. This means that there is no positively added water except for water that is inevitably mixed as in the case of water.

  The scalp cleaning composition may be composed only of rice bran oil and a nonionic surfactant, but may contain other components as long as the effects of the present invention are not impaired. Such components are not particularly limited as long as they are water-insoluble components that can be incorporated into general cosmetics. For example, oil components (excluding rice bran oil), hydrocarbons, fatty acids, plant extracts, esters, Examples include oxyalkylene glycols, silicone oils, polyhydric alcohols, sugars, polymers, and sequestering agents.

  Examples of the oil component excluding rice bran oil include jojoba oil, wheat germ oil, macadamia nut oil, and meadow home oil. Examples of the hydrocarbon include carnauba wax, light isoparaffin, light liquid isoparaffin, squalane, ceresin, paraffin, 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, undecylenic acid, and the like. Examples of the plant extract include licorice extract, assembly extract, clam extract, quina extract, cormorant extract, button extract, lily extract, peonies extract, perilla extract, carrot extract, aloe extract, hop extract, loquat extract and the like.

  Examples of the ester include isopropyl myristate, myristyl myristate, stearyl stearate, isostearyl laurate, octyldodecyl oleate, hexyl 2-ethylhexanoate, di-2-ethylhexyl succinate, diethoxyethyl succinate, isostearic acid Examples thereof include phytosteryl, 2-ethylhexyl isononanoate, and glyceryl tri (capryl / capric acid). Examples of the polyoxyalkylene glycols include polyoxypropylene glyceryl ether, polyoxybutylene polyoxyethylene polyoxypropylene glyceryl ether, polyoxyethylene polyoxypropylene glyceryl ether, and the like.

  Examples of silicone oil include decamethyltrisiloxane, methylpolysiloxane, highly polymerized methylpolysiloxane, decamethylcyclopentasiloxane, polyoxyethylene / methylpolysiloxane copolymer, aminoethylaminopropylsiloxane / dimethylsiloxane copolymer. Examples thereof include emulsion, aminoethylaminopropylmethylsiloxane / dimethylsiloxane copolymer, trimethylsiloxysilicic acid, methylhydrogenpolysiloxane, and the like. Examples of the polyhydric alcohol include ethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, glycerin, polyglycerin and the like. Examples of the saccharide include starch, sorbitol, trehalose, and sucrose.

  Examples of the polymer include N-vinylpyrrolidone / quaternized dimethylaminoethyl methacrylate copolymer, N-vinylpyrrolidone / methacrylamidopropyl trimethylammonium chloride copolymer, dimethyldiallylammonium chloride polymer, dimethyldiallylammonium chloride / Acrylamide copolymer, o- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose, N, N-dimethylaminoethyl diethyl methacrylate sulfate, N, N-dimethylacrylamide, polyethylene glycol dimethacrylate A copolymer etc. are mentioned. Examples of the sequestering agent include edetic acid, disodium edetate, diethylenetriaminepentaacetic acid, pentasodium diethylenetriaminepentaacetic acid, 1-hydroxyethylidene-1,1-diphosphonic acid, and the like.

  In addition to each of the above components, a fragrance, an antioxidant, an antiseptic, an ultraviolet absorber, an anti-inflammatory agent, a pH adjuster, and the like are blended in the scalp cleaning composition as long as the effects of the present invention are not impaired. Also good.

  The scalp cleaning composition can be in various forms such as cream, lotion, gel, aerosol (foam, mist), etc., and there is no particular limitation, but aerosol (for convenience of application to the scalp) Aerosol foam) is preferred.

  In order to make the scalp cleaning composition into an aerosol (aerosol foam), a composition (aerosol) comprising a scalp cleaning composition composed of rice bran oil and a nonionic surfactant as a stock solution and a propellant added thereto. A composition) may be prepared and filled in an aerosol container.

  Examples of the propellant include hydrocarbons such as liquefied petroleum gas (LPG) mainly composed of propane, n-butane and i-butane; ethers such as dimethyl ether, methyl ethyl ether and diethyl ether; Gas, nitrogen gas, compressed gas such as oxygen; and the like. These propellants may be used alone or in combination of two or more. The blending amount of the propellant is 5% by mass or more and 20% by mass or less, more preferably 15% by mass or less in the total amount of the aerosol composition composed of the stock solution (hair washing composition) and the propellant. It is desirable to do. If the amount of the propellant in the aerosol composition is too small or too large, foamability, fineness of the foam, foam persistence and the like may be deteriorated.

  Step (2) is a step of washing the scalp and hair using an appropriate amount of a shampoo containing at least a surfactant and water, and then washing the scalp and hair with water. By this step, in step (1) Wash away the lipids that have peeled off the scalp.

  Surfactants related to shampoos include anionic surfactants such as sodium polyoxyethylene lauryl ether acetate, sodium polyoxyethylene lauryl ether sulfate, disodium lauryl sulfosuccinate, lauryl phosphate; coconut oil fatty acid monoethanolamide, Nonionic surfactants such as coconut oil fatty acid N-methylethanolamide; amphoteric surfactants such as 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauric acid amidopropylacetic acid betaine; . These surfactants may be used individually by 1 type, and may be used in combination of 2 or more type. Polyoxyethylene lauryl ether sodium acetate, sodium polyoxyethylene lauryl ether sulfate, disodium lauryl sulfosuccinate, lauryl phosphoric acid, coconut oil fatty acid N-methylethanolamide and It is preferable to use any combination of two or more of 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaines.

  The total amount of the surfactant in the shampoo is 5% by mass or more, more preferably 10% by mass or more, and 30% by mass or less, more preferably 20% by mass or less. If the amount of the surfactant is too small, foaming may be dull and it may not give a feeling of washing hair. If it is too much, the degreasing power will be excessive and the scalp will be dried, or the hair may be damaged due to the degreasing effect. Sometimes.

  Moreover, it is preferable that the compounding quantity of the water in a shampoo agent is 20-70 mass%, for example.

  In the shampoo agent, in addition to the surfactant and water, various components blended in a general shampoo agent can be appropriately blended within a range not impairing the effects of the present invention. Examples of such blending components include various extracts, polyhydric alcohols, anti-inflammatory agents, refreshing agents, humectants, polymers, sequestering agents, pH adjusters, and the like.

  Various extracts include, for example, royal jelly extract, licorice extract, assembly extract, hamamelis extract, quina extract, cormorant extract, button extract, lily extract, peonies extract, perilla extract, carrot extract, aloe extract, melissa extract, seaweed extract, hop extract. , Loquat extract and the like. Examples of the anti-inflammatory agent include dipotassium glycyrrhizinate, and examples of the refreshing agent include L-menthol. Examples of the humectant include tuberose polysaccharide. Examples of the pH adjuster include acids such as citric acid, malic acid, and lactic acid; alkalis such as ammonia, sodium hydroxide, triethanolamine, and arginine;

  Examples of the polyhydric alcohol, polymer, and sequestering agent include the polyhydric alcohol, polymer, and sequestering agent exemplified above as examples that can be blended in the scalp cleaning composition.

  In addition to the above components, fragrances, antioxidants, preservatives, ultraviolet absorbers and the like may be added to the shampoo agent within the range not impairing the effects of the present invention.

  Step (3) is a step in which an appropriate amount of a treatment agent containing at least a cationic surfactant and water is applied to the hair washed in step (2), and then the hair is washed with water and dried. This process improves the condition of the hair and makes it feel good.

  Examples of the cationic surfactant related to the treatment agent include cetyltrimethylammonium bromide, cetyltrimethylammonium chloride, and alkyltrimethylammonium chloride (such as behenyltrimethylammonium chloride).

  The blending amount of the cationic surfactant during the treatment is preferably 0.5% by mass or more, more preferably 1% by mass or more, and 10% by mass or less, more preferably 5% by mass or less. If the amount of the cationic surfactant is too small, emulsification of the treatment agent becomes difficult, and the effect of improving the feel of the hair after treatment may be reduced. Moreover, when there are too many compounding quantities of a cationic surfactant, the viscosity of a treatment agent will become large and operativity may fall, and the irritation | stimulation with respect to a scalp may become strong.

  Moreover, it is preferable that the compounding quantity of the water in a treatment agent is 50-80 mass%, for example.

  In addition to the cationic surfactant and water, for example, tuberose polysaccharide, macadamia nut oil or ceramide is preferably added to the treatment agent, and when these are added, the condition of the hair is further improved, and more A smooth feel can be maintained.

  The blending amount in the treatment agent when using the tuberose polysaccharide is 0.001% by mass or more, more preferably 0.002% by mass or more, and 0.1% by mass or less, more preferably 0.005% by mass or less. It is desirable that If the compounding amount of the tuberose polysaccharide is too small, the effect of using this may not be sufficiently ensured, and if it is too large, the hair tip may become stiff and stiff after treatment.

  In addition, the blending amount in the treatment agent when using macadamia nut oil is 0.2% by mass or more, more preferably 0.5% by mass or more, and 5% by mass or less, more preferably 3% by mass or less. Is desirable. If the amount of macadamia nut oil is too small, the effect of using this may not be sufficiently ensured, and if too large, the treated hair may become sticky.

  Furthermore, the blending amount in the treatment agent when using ceramide is 0.01% by mass or more, more preferably 0.015% by mass or more, and 0.10% by mass or less, more preferably 0.07% by mass or less. It is desirable that If the amount of ceramide is too small, the effect of using this may not be sufficiently secured, and if too large, the hair tip may become stiff and stiff after treatment.

  In addition to the above-described components, the treatment agent may contain various components blended in a general treatment agent within a range not impairing the effects of the present invention. Examples of such components include higher alcohols, esters, various extracts, polyhydric alcohols, anti-inflammatory agents, humectants, and the like.

  Examples of higher alcohols include stearyl alcohol, lauryl alcohol, cetyl alcohol, and oleyl alcohol. Examples of the ester include isopropyl myristate, myristyl myristate, stearyl stearate, isostearyl laurate, octyldodecyl oleate, cetyl 2-ethylhexanoate, di-2-ethylhexyl succinate, dipentaerythritol fatty acid ester, succinate Examples include dioctyl acid and phytosteryl isostearate.

  Examples of the polyhydric alcohol include various polyhydric alcohols exemplified above as those that can be added to the scalp washing composition. Examples of the various extracts, anti-inflammatory agents, and humectants include, for example, the various extracts, anti-inflammatory agents, and humectants exemplified above as those that can be added to the shampoo.

  In addition to the above-described components, fragrances, antioxidants, preservatives, ultraviolet absorbers, and the like may be added to the treatment agent as long as the effects of the present invention are not impaired.

  According to the method of the present invention having the above steps (1) to (3), unnecessary lipids on the scalp are removed to prevent itching and stickiness, and the propagation of bacteria that cause inflammation of the scalp is suppressed. Thus, it is possible to prevent the occurrence of poor blood circulation in the scalp and to give the scalp softness to improve the condition of the scalp. The thickness of the hair is said to be proportional to the size of the pores. However, according to the method of the present invention having the above steps (1) to (3), the pores of the scalp can be particularly clean, so The effect of growing the hair can be expected.

  In addition, in this invention method, it is also preferable to have the process (4a) of apply | coating a proper amount of hair restoring agents to a scalp following said process (1)-(3). This step (4a) can further promote hair growth.

  The hair restorer used in the step (4a) preferably contains at least a tonin extract. The blending amount of the tonin extract in the hair restorer is 0.01% by mass or more, more preferably 0.1% by mass or more, and 1% by mass or less, more preferably 0.5% by mass or less. If the amount of tonin extract is too small, the effect (hair-growth effect) obtained by blending it may not be sufficiently obtained, and if too large, it may be disadvantageous in terms of cost.

  Moreover, it is more preferable that the hair restorer contains polyoxyethylene hydrogenated castor oil. Thereby, moisture can be given to the scalp. The blending amount of polyoxyethylene hydrogenated castor oil in the hair restorer is 0.05% by mass or more, more preferably 0.1% by mass or more, and 2% by mass or less, more preferably 0.5% by mass or less. It is desirable to be. If the amount of polyoxyethylene hydrogenated castor oil is too small, the effect of using this may not be sufficiently secured, and if it is too large, the hair growth agent will be significantly foamed or the scalp will become sticky after application. Sometimes.

  The hair restorer usually has a lotion form, and it is preferable to use ethanol as the solvent. It is preferable that the compounding quantity of the solvent in a hair restorer is 20-50 mass%, for example.

  Moreover, the various ingredients currently mix | blended with the general hair restorer can be mix | blended with the hair restorer in the range which does not impair the effect. Examples of such components include various hair restoring components (excluding tonin extract), various moisturizing components, surfactants (excluding polyoxyethylene hydrogenated castor oil), and the like.

  Examples of hair-growth ingredients include tamasutsuki rough dial alkaloid, assembly extract, pantotenyl ethyl ether, dipotassium glycyrrhizinate, perilla extract, nettle extract, butcher bloom extract, seaweed extract, rice extract, burnet extract, mint extract, sage extract , Hamamelis extract, d-δ-tocopherol, L-menthol, carrot extract and the like. Examples of the moisturizing component include 1,3-butylene glycol, glycerin, tormentilla extract, hydrogenated soybean phospholipid, ascorbyl tetra-2-hexyldecanoate, pearl calc extract, and the like. Examples of the surfactant excluding polyoxyethylene hydrogenated castor oil include polyoxyethylene lauryl ether, dicetyl phosphate, hydrogenated coconut oil fatty acid sodium glyceryl sulfate, and the like.

  In addition to the above components, perfumes, antioxidants, preservatives, ultraviolet absorbers and the like may be added to the hair restorer within a range that does not impair the effect.

  In addition, the method of the present invention preferably includes a step (4b) of applying an appropriate amount of a scalp moisturizer to the scalp following the steps (1) to (3). By this step (4b), the scalp can be moisturized, and for example, the occurrence of dandruff and itching can be suppressed.

  It is preferable that the scalp moisturizer used in the step (4b) contains at least 1,3-butylene glycol. The blending amount of 1,3-butylene glycol in the scalp moisturizer is 5% by mass or more, more preferably 10% by mass or more, and preferably 20% by mass or less, more preferably 15% by mass or less. If the amount of 1,3-butylene glycol is too small, the effect of using this (a moisturizing effect on the scalp) may not be sufficiently secured, and if too much, the scalp after application may become sticky. There is.

  Moreover, it is more preferable that the scalp moisturizer contains a tonin extract. Thereby, hair growth can be promoted. The blending amount of the tonin extract in the scalp moisturizing agent is 0.01% by mass or more, more preferably 0.1% by mass or more, and preferably 1% by mass or less, more preferably 0.5% by mass or less. . If the amount of tonin extract is too small, the effect of blending it may not be sufficiently obtained, and if too large, it may be disadvantageous in terms of cost.

  The scalp moisturizer usually has a lotion form, and contains ethanol, glycerin, water and the like as a solvent. These solvents may be used alone or in combination of two or more. It is preferable that the compounding quantity of the solvent in a scalp moisturizer is 10-30 mass%, for example.

  Moreover, the scalp moisturizer can be blended with various components blended in a general scalp moisturizer as long as the effect is not impaired. Examples of such components include various hair-restoring components (excluding tonin extract), various moisturizing components, and surfactants.

  Examples of hair-growth ingredients include tamasutsuki rough dial alkaloid, assembly extract, pantotenyl ethyl ether, dipotassium glycyrrhizinate, perilla extract, nettle extract, butcher bloom extract, seaweed extract, rice extract, burnet extract, mint extract, sage extract , Hamamelis extract, d-δ-tocopherol, L-menthol, carrot extract and the like. Examples of the moisturizing component include tormentilla extract, hydrogenated soybean phospholipid, ascorbyl tetra-2-hexyldecanoate, pearl calc extract, and the like. Examples of the surfactant include polyoxyethylene hydrogenated castor oil, polyoxyethylene lauryl ether, dicetyl phosphate, hydrogenated coconut oil fatty acid sodium glyceryl sulfate, and the like.

  In addition to the above components, a fragrance, an antioxidant, an antiseptic, an ultraviolet absorber, and the like may be added to the scalp moisturizer so long as the effect is not impaired.

  Hereinafter, the present invention will be described in detail based on examples. However, the following examples are not intended to limit the present invention, and all modifications made without departing from the spirit of the preceding and following descriptions are included in the technical scope of the present invention. In Table 1 below, the scalp cleaning composition as a whole, Table 2 as a whole shampoo, Table 3 as a whole treatment agent, Table 5 as a whole hair restorer, and Table 7 as a whole scalp moisturizer, respectively. The compounding amount of each component is indicated in% so that it becomes 100%, but all the% is mass%, and in these tables, the display of% is omitted and only the numerical value indicating the compounding amount is displayed. To do.

Example 1
About a subject's scalp, the pore which exists in the location which hits the intersection of the line segment of 1-6 shown in FIG. 1 and the line segment of AE is a microscope ("USB microscope M2 skin check set" by Scalar) Was observed, and it was confirmed that lipid (lipid peroxide) was present in all pores present in the above-mentioned locations. FIG. 1 is a plan view schematically showing the subject's head, with the upper side in the figure being the face side.

  A liquid scalp cleaning composition having the composition shown in Table 1 was prepared, and as a step (1), 5 mL of this scalp cleaning composition was placed on the left side of the subject's head (line segments 1 to 3 and line segments A to E). Applied to the side where the crossing point exists) and massaged with a professional tester.

  Subsequently, as the step (2), the entire scalp of the subject was washed using a shampoo agent having the composition shown in Table 2, and then washed with water to sufficiently rinse off the shampoo agent. Further, as a step (3), a treatment agent having the composition shown in Table 3 was applied to the entire subject's hair, washed with water and then dried.

In the scalp of the subject after the completion of the step (3), the pores existing at the intersections between the line segments 1 to 6 shown in FIG. 1 and the line segments A to E shown in FIG. It was confirmed whether or not lipid remained. And the left side of the head (the side where the intersections of line segments 1 to 3 and line segments A to E exist) and the right side of the head (the side where the intersections of line segments 4 to 6 and line segments A to E exist). For each of the above, the ratio (residual ratio) of pores in which lipids remained was determined by the following formula. The results are shown in Table 4.
Residual rate = (a / b) × 100
Here, in the above formula, a is the number of pores in which lipid remains after completion of the step (3), and b is the number of pores (15) existing at the intersection.

Examples 2-5 and Comparative Examples 1-3
Except having changed the scalp washing composition used at a process (1) into what is shown in Table 1, it carries out each operation of process (1)-(3) similarly to Example 1, and calculates | requires the said residual rate. It was. The results are shown in Table 4.

Example 6
The scalp cleaning composition used in Example 2 was used as a stock solution, and this stock solution and propellant (LPG) were mixed at 90:10 (mass ratio) to prepare a composition, which was filled in an aerosol container. An aerosol type (aerosol foam) hair cleaning composition was obtained.

  Except having used said hair washing composition at the process (1), each operation of process (1)-(3) was performed like Example 1, and the said residual rate was calculated | required. The results are shown in Table 4.

Example 7
The scalp cleaning composition used in Example 4 was used as a stock solution, and this stock solution and propellant (LPG) were mixed at 90:10 (mass ratio) to prepare a composition, which was filled into an aerosol container. Thus, an aerosol type (aerosol foam) hair cleaning composition was obtained.

  Except having used said hair washing composition at the process (1), each operation of process (1)-(3) was performed like Example 1, and the said residual rate was calculated | required. The results are shown in Table 4.

  Here, in Tables 2 and 3, the term “total 100” in the column of purified water means that the amount of purified water is added to the total amount of each component other than purified water constituting the shampoo or treatment agent. It means that it was made to become 100%.

  In each example in which the step (1) was not carried out and only washing with a normal shampoo [step (2)] and treatment treatment [step (3)] was performed, and on the right side of the scalp in the comparative example, the scalp (pores) The lipids of the skin were hardly removed, but the operation of step (1) was performed using a scalp washing composition containing an appropriate amount of rice bran oil and nonionic surfactant (polyglyceryl laurate, coconut fatty acid sorbitan). Further, on the left side of the scalp in Examples 1 to 7, lipids in the scalp (pores) can be removed well, and the state of the scalp can be improved satisfactorily. Further, in Examples 1 to 5, a liquid scalp cleaning composition was used, and in Examples 6 and 7, a foam-like (aerosol foam) scalp cleaning composition was used. Any form of scalp cleaning composition was used. Good results have also been obtained using. In addition, the foam-like scalp cleaning composition in Examples 6 and 7 is easier to apply a predetermined amount when applied to the scalp than the liquid scalp cleaning composition in Examples 1 to 5. In addition, there was no sagging from the scalp, and the convenience of application was improved.

  On the other hand, in the step (1), Comparative Example 1 and Comparative Example 2 using a scalp cleaning composition not containing rice bran oil, and Comparative Example using a scalp cleaning composition having an inappropriate content of rice bran oil On the left side of the scalp in Fig. 3, lipid removal from the scalp (pores) was insufficient.

Example 8
After carrying out each operation of the steps (1) to (3) in the same manner as in Example 7 for 5 subjects A to E, as a step (4a), 2 mL of the hair restorer having the composition shown in Table 5 was scalp. It was applied to. Thereafter, the operation in the step (4a) was performed twice a day (morning and evening) for one month. Each subject evaluated the state of the hair after one month. The results of evaluation by each subject are shown in Table 6.

  Here, in Table 5, “with a total of 100” in the column of purified water is 100% by adding the amount of purified water to the total amount of each component other than purified water constituting the hair restorer. Means that

  As shown in Table 6, all five subjects evaluated that the condition of the hair was improved, and in addition to the improvement of the scalp state by the operations of steps (1) to (3), the step ( The effect of promoting hair growth by the operation of 4a) was confirmed.

Example 9
After performing each operation of process (1)-process (3) similarly to Example 7 with respect to four test subjects F ~ I, 2 mL of scalp moisturizer of the composition shown in Table 7 is prepared as process (4b). Applied to scalp. The operation of the above step (4b) was performed twice a day (morning and evening) for one week. Each subject evaluated the state of the hair for one week. The results of evaluation by each subject are shown in Table 8.

  Here, in Table 7, “with a total of 100” in the column of purified water means that the total amount of each component other than purified water constituting the scalp moisturizer is 100% by adding the amount of purified water. Means that

  As shown in Table 8, all four subjects evaluated that dandruff and / or itching had decreased, and the state of the scalp improved by the operations of steps (1) to (3) It was confirmed that the operation was further improved by the operation of 4b).

It is a figure for demonstrating the scalp state observation method in an Example and a comparative example.

Claims (6)

A method for improving the condition of the scalp by removing unnecessary lipids from the scalp, comprising the following steps (1) to (3).
Step (1): A scalp cleaning composition containing 50 to 97% by weight of rice bran oil and 3 to 50% by weight of a nonionic surfactant and substantially free of water is adapted to dry scalp. Process.
Step (2): after the step (1), at least containing a surfactant and water, and the total amount of the surfactant is washed scalp and hair with a 5-30% by mass Ru shampoos And subsequently washing the scalp and hair with water.
Step (3): after the step (2), containing the water at least a cationic surfactant, and a treatment agent total amount Ru 0.5 to 10% by mass of the cationic surfactant in the hair The process of applying and subsequently washing the hair with water and drying.   The method for improving the condition of the scalp according to claim 1, wherein in the step (1), a propellant is blended and used in the scalp cleaning composition.   The method for improving the condition of the scalp according to claim 1 or 2, further comprising a step of applying a hair-restoring agent to the scalp after the step (3).   The method for improving the condition of the scalp according to claim 3, wherein the hair restorer contains at least a tonin extract.   The scalp condition improving method according to claim 1 or 2, further comprising a step of applying a scalp moisturizing agent to the scalp after the step (3).   The scalp condition improving method according to claim 5, wherein the scalp moisturizing agent contains at least 1,3-butylene glycol.

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