JP4220909B2 - Scalp hair cosmetics - Google Patents

Description

  The present invention relates to a scalp hair cosmetic that is excellent in the effect of reducing the greasy and odor of the scalp and hair, and that is excellent in the stability over time of the preparation.

  Sebum is always secreted from the scalp, which protects the scalp and hair from drying. However, excessive sebum secretion gives the scalp and hair a greasy appearance, and further, they are oxidized by oxygen in the air, resulting in an unpleasant odor. So far, various plant extracts and chemical substances having anti-androgenic activity have been externally used to suppress sebum secretion, but the effect has not been sufficient. In addition, preparations containing these components are often inferior in stability of the system, for example, starch is formed with storage over time.

  As a scalp hair cosmetic containing eucalyptus extract, in addition to a hair nourishing and hair restoring agent (Patent Documents 1 and 2, etc.) utilizing the hair growth action, a hair care product having a dandruff, itching and hair loss inhibiting effect (Patent Document 3) A hair quality improving agent (Patent Document 4) that gives firmness, firmness, smoothness and moistness to hair is known. However, eucalyptus extract is not known to suppress sebum and odor.

JP-A-2-48514 JP 2000-154118 A Japanese Patent Laid-Open No. 9-104610 JP 2001-270811 A

  It is an object of the present invention to provide a scalp hair cosmetic that is excellent in the effect of reducing the greasy and odor of the scalp and hair, and that is excellent in the stability over time of the preparation.

  The present inventor, together with one or more selected from an antiseborrheic agent and an antioxidant, together with the eucalyptus extract and polyhydric alcohol, the action of the antiseborrheic agent and the antioxidant is significantly enhanced, It has been found that the stability of the preparation is also improved.

That is, the present invention includes the following components (A) to (C):
(A) Eucalyptus extract
(B) Polyhydric alcohol
The present invention provides a scalp / hair cosmetic containing at least one selected from (C) (c1) an antiseborrheic agent and (c2) an antioxidant.

  The scalp hair cosmetic of the present invention is excellent in the effect of reducing the greasy and odor of the scalp and hair, and excellent in the stability over time of the preparation.

  Eucalyptus extract component (A), Eucalyptus globulus [scientific name: Eucalyptus globulus, Eucalyptus] leaves, branches, etc., as it is or after dry pulverization, obtained by solvent extraction Commercial products can also be used.

  Solvents used for extraction are those usually used for extraction of plant components such as water, petroleum ether, n-hexane, toluene, dichloroethane, chloroform, ether, ethyl acetate, acetone, methanol, ethanol, propanol, butanol, ethylene glycol. , Propylene glycol, butylene glycol, and the like, and water, ethanol, propylene glycol, and butylene glycol are particularly preferable. You may use these in combination of 2 or more type. Moreover, normal conditions can be applied as extraction conditions. For example, the above-described plant may be immersed or heated to reflux at 3 to 100 ° C. for several hours to several weeks. Eucalyptus extract can be used as an active ingredient of the scalp and hair cosmetic composition of the present invention as it is, but it can also be used by fractionating a highly active fraction by an appropriate separation means such as gel filtration, chromatography, precision distillation, etc. For example, macrocarpal A, B, C, D, E, F, G, H, I, J, K, am-1, etc., which are physiologically active substances contained in eucalyptus, may be used.

  The content of the eucalyptus extract of component (A) is 0.0001 to 5% by weight in the total composition, and further 0.0005 as dry weight from the viewpoint of sufficient greasy scalp / hair, odor mitigating effect and suppression of irritation. -1% by weight, in particular 0.0006-0.5% by weight is preferred.

  Examples of the polyhydric alcohol as component (B) include glycerin, propylene glycol, 1,3-butylene glycol, dipropylene glycol and the like. The content of the polyhydric alcohol of component (B) is preferably 0.001 to 10% by weight, particularly 0.01 to 5% by weight, based on the total composition, from the viewpoint of solubilizing the active ingredient and improving the stability of the composition.

  Among the components (C), the antiseborrheic agent of the component (c1) is blended in order to suppress sebum secretion and prevent greasy scalp and hair. Furthermore, this component is thought to help effectively penetrate component (A) by inhibiting the secretion of sebum. Anti-seborrheic agents include ash extract, pyridoxine hydrochloride, quacharalate extract, clove oil, eugenols (eugenol, eugenyl glucoside, etc.), cyproterone acetate, 11α-hydroxyprogesterone, flutamide, 3-deoxyadenosine, Examples thereof include chlormadinone acetate, ethinyl estradiol, spironolactone, epitesterone and the like, and among them, cucumber extract, quacharalate extract, clove oil and eugenols are preferable.

  Among the components (C), the antioxidant of the component (c2) is blended in order to suppress sebum oxidation and to suppress irritation and odor generation to the scalp. Furthermore, this component is thought to help sequestration of sebum and help effective penetration of component (A). Examples of the antioxidant include mulberry extract, soybean extract, black tea extract, tea extract, age extract, and the like. Among these, citrus extract and tea extract are preferable.

  The anti-seborrheic agent of component (c1) and the antioxidant of component (c2) may be used in combination of two or more of them, and both components (c1) and (c2) may be used in combination. preferable. The content of component (c1) and component (c2) is 0.0001 to 5% by weight in the total composition from the viewpoint of sufficient sebum secretion suppression effect or sebum oxidation suppression effect and effective penetration of component (A), respectively. %, Particularly 0.001 to 1% by weight is preferred.

  In the scalp hair cosmetic of the present invention, a polar oil agent can be further blended as component (D) in order to solubilize active ingredients to promote penetration into the scalp and to improve feel and stability. . Examples of polar oils include higher alcohols, fatty acid alkyl esters, and fatty acid glycerides. Examples of the higher alcohol include lauryl alcohol, stearyl alcohol, oleyl alcohol, isostearyl alcohol, cetostearyl alcohol and the like. Examples of the fatty acid alkyl ester include methyl oleate, ethyl oleate, methyl isostearate, ethyl isostearate, isodecyl isononanoate, isotridecyl isononanoate, and isononyl isononanoate. Examples of fatty acid glycerides include monoglycerides, diglycerides and triglycerides of fatty acids having 8 to 18 carbon atoms. Of these, those that are liquid at 20 ° C and less than 100 mPa · s, especially less than 50 mPa · s, from the viewpoint of preventing the crystallization of active ingredients, dissolving the oil film consisting of lipids on the scalp, and promoting skin penetration Is preferred. Specifically, methyl isostearate, ethyl isostearate, isodecyl isononanoate, isotridecyl isononanoate, and isononyl isononanoate are preferred. The content of the polar oil agent is preferably 0.01 to 5% by weight, particularly 0.1 to 2% by weight, based on the total composition, from the viewpoint of promoting penetration of the active ingredient and improving touch.

  The scalp hair cosmetic composition of the present invention may further contain a chelating agent. Examples of the chelating agent include edetic acid or a salt thereof, hydroxyethanediphosphonic acid or a salt thereof, and edetate such as disodium edetate, trisodium edetate, and tetrasodium edetate is particularly preferable. The content of the chelating agent is preferably 0.01 to 1% by weight, particularly 0.05 to 0.5% by weight, based on the total composition.

  Furthermore, it will be as follows if the content ratio of each component in the scalp scalp hair cosmetics of this invention is shown. In order to obtain the effect of reducing oiliness and odor, the weight ratio of component (A): component (C) is preferably 1: 1 to 1: 100, particularly 1: 2 to 1:60. In order to obtain better storage stability, the weight ratio of component (A): component (B) is preferably 1:10 to 1: 2000, particularly 1:40 to 1: 400.

  The scalp and hair cosmetic composition of the present invention preferably further contains a lower alcohol. Examples of the lower alcohol include methanol, ethanol, 2-propanol and the like, and ethanol is particularly preferable. The content of the lower alcohol is preferably 30% by weight or more, particularly 50% by weight or more based on the total composition.

  The scalp and hair cosmetic composition of the present invention may further contain a surfactant. Examples of the surfactant include a cationic surfactant, an anionic surfactant, and a nonionic surfactant. The surfactant is effective in solubilizing each component and improving the stability.

  Examples of cationic surfactants include cetyltrimethylammonium chloride, stearyltrimethylammonium chloride, aralkyltrimethylammonium chloride, and behenyltrimethylammonium chloride. From the viewpoint of smoothness during application, cetyltrimethylammonium chloride and stearyltrimethyl chloride are particularly preferred. Ammonium is preferred.

  Anionic surfactants include alkyl (or alkenyl) sulfates, polyoxyalkylene alkyl (or alkenyl) ether sulfates, alkane sulfonates, olefin sulfonates, alkyl benzene sulfonates, alkyl (or alkenyl) sulfosuccinates. Dialkyl (or dialkenyl) sulfosuccinate, polyoxyalkylene alkyl (or alkenyl) sulfosuccinate, alkyl (or alkenyl) ether carboxylate, polyoxyalkylene alkyl (or alkenyl) ether carboxylate, polyoxyalkylene alkyl ( Or alkenyl) ether phosphate, fatty acid salt, N-acyl glutamate, N-acyl taurate, N-acyl methyl taurine and the like. Of these, polyoxyalkylene alkyl (or alkenyl) ether phosphate, fatty acid salt, N-acyl glutamate, N-acyl taurate, N-acyl methyl taurine and the like are preferable.

  Nonionic surfactants include polyoxyalkylene alkyl ethers, polyoxyalkylene alkenyl ethers, higher fatty acid sucrose esters, polyglycerin fatty acid esters, higher fatty acid mono- or diethanolamides, polyoxyethylene hydrogenated castor oil, sorbitan fatty acid esters, poly Examples thereof include oxyethylene sorbitan fatty acid ester, polyoxyethylene sorbite fatty acid ester, alkyl polyglycoside, alkylamine oxide, and alkylamidoamine oxide. Of these, polyoxyalkylene alkyl ether, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene sorbit fatty acid ester, and polyoxyethylene hydrogenated castor oil are preferable, and sorbitan fatty acid ester and polyoxyethylene alkyl ether are particularly preferable.

  Two or more surfactants can be used in combination, and the content thereof is preferably 0.01 to 1% by weight, particularly preferably 0.1 to 0.5% by weight, based on the total composition.

  In addition to the above components, the scalp and hair cosmetic composition of the present invention may contain various additive components used in normal hair cosmetics depending on the purpose. For example, blood circulation promoters, hair follicle activators, moisturizers, anti-inflammatory agents, antibacterial agents, refreshing agents, preservatives, salts, pH adjusters, propellants, fragrances, pigments, UV absorbers, etc. can be blended. .

  The scalp scalp hair cosmetic of the present invention can be in a desired form such as an aqueous solution, ethanol solution, emulsion, suspension, gel, aerosol, etc., for example, hair rinse, hair conditioner, hair treatment, hair lotion, hair pack, hair It can be in the form of cream, conditioning mousse, hair mousse, hair spray, shampoo, leave-on treatment and the like.

Examples 1-4 and Comparative Examples 1-4
The hair lotions shown in Table 1 were prepared according to a conventional method, and their storage stability was evaluated.

〔Evaluation methods〕
After each hair lotion was stored in a thermostatic bath at 5 ° C. for 1 month, the presence or absence of starch was visually observed. No occurrence of starch: “−”, slight presence of starch: “±”, presence of starch : “+”, A large amount of starch was observed: judged as “++”. The results are shown in Table 1.

Examples 5-7 and Comparative Examples 5-7
The hair lotions shown in Table 2 were prepared according to a conventional method, and the effects of reducing the odor and greasy of the scalp and hair by using them were evaluated.

[Evaluation method of odor reduction effect]
60 subjects were divided into 3 groups, the first group: Example 5 and Comparative Example 5, the second group: Example 6 and Comparative Example 6, and the third group: Example 7 and Comparative Example 7, respectively. Lotion was used for half a month with half head. The person compared the odor reduction effect of the scalp and hair after 2 weeks and 1 month. The results are shown in Table 3.

[Evaluation method of greasy reduction effect]
Among the subjects who conducted the above odor reduction test, the subjects in Group 1 and Group 3 compared the effect of reducing the greasyness of the scalp and hair after 2 weeks and 1 month. The results are shown in Table 3.

Example 8
A hair lotion having the composition shown below was produced according to a conventional method.
(weight%)
Eucalyptus extract (0.2 wt% ethanol solution) 3.0
1,3-butylene glycol 1.5
Cashew extract 1.0
Glycyrrhetinic acid 0.1
Ethanol 40.0
Purified water balance

Example 9
A hair gel having the composition shown below was produced according to a conventional method.
(weight%)
Eucalyptus extract (0.2 wt% ethanol solution) 1.5
Dipropylene glycol 1.5
Quacharalate extract (0.5 wt% ethanol solution) 1.5
Koki extract (1.5 wt% ethanol solution) 2.0
Carboxyvinyl polymer (Carbopol 981; Noveon) 0.2
48 wt% potassium hydroxide 0.03
Ethanol 20.0
Purified water balance

Example 10
An aerosol having the composition shown below was produced according to a conventional method.
(Stock solution) (wt%)
Eucalyptus extract (0.2 wt% ethanol solution) 1.0
Propylene glycol 2.0
Eugenyl glucoside 0.1
Soybean extract (0.5 wt% ethanol solution) 3.0
Ethanol 60.0
Purified water balance (propellant)
Carbon dioxide stock solution / carbon dioxide gas = 98/2

Example 11
An aerosol having the composition shown below was produced according to a conventional method.
(Stock solution) (wt%)
Eucalyptus extract (0.2 wt% ethanol solution) 2.0
1,3-butylene glycol 1.0
Gypsum extract (0.5 wt% ethanol solution) 1.5
Koki extract (1.5 wt% ethanol solution) 2.0
Isononyl isononanoate 0.2
Di-n-butylhydroxytoluene 0.1
Edetate disodium 0.1
Ethanol 60.0
Purified water balance (propellant)
Carbon dioxide stock solution / carbon dioxide gas = 98/2

Claims (2)

Next ingredient (A) ~ (C)
(A) Eucalyptus extract : 0.0001-5% by weight as dry weight
(B) Polyhydric alcohol selected from propylene glycol, 1,3-butylene glycol and dipropylene glycol : 0.01 to 5% by weight
(C) (c1) An antiseborrheic agent selected from citrus extract, eugenols and spironolactone : 0.001 to 1% by weight, and
(c2) Antioxidant selected from Koki extract, soybean extract and tea extract : 0.001 to 1% by weight
Contains scalp and hair cosmetics.   Furthermore, the scalp hair cosmetics of Claim 1 containing a polar oil agent as a component (D).