JP6124686B2 - Scalp hair cosmetics - Google Patents

Description

  The present invention relates to a scalp hair cosmetic.

Conditioning agents for the scalp as cosmetics for scalp hair include types that are applied to scalp hair and then washed off, and types that are not washed out. Expected to be effective in improving scalp discomfort such as prevention of poor circulation. In addition, the above-mentioned conditioning agent for the skin is required not only to feel the effect when used, but also to provide a refreshing feeling after drying and a finished hair without any defects.
As such a skin conditioning agent, for example, a skin cosmetic blended with polyoxyethylene glycol that can be warmed by heat of hydration during use has been proposed (see Patent Documents 1 and 2). However, these proposals have the problem that the blood circulation promotion feeling during use and the refreshing feeling are insufficient, and the low-temperature stability is inferior.
In addition, the conditioning agent for the skin, in which silicone oil is added to a system using a combination of a cationic surfactant and a higher alcohol, provides good fingering (smoothness) when used and smooth hair when finished. In terms of blood circulation promotion, it was not satisfactory.

  Therefore, it is desired to provide a scalp hair cosmetic that is excellent in blood circulation promotion feeling and warmth sustainability both in use and during drying, and also excellent in low-temperature stability.

JP-A-56-57711 JP 2000-256160 A

  An object of the present invention is to solve the above-described problems and achieve the following objects. That is, an object of the present invention is to provide a scalp hair cosmetic that is excellent in blood circulation promotion feeling and sustainability of warmth, both in use and during drying, and also in low temperature stability.

The scalp hair cosmetic of the present invention as a means for solving the above problems,
(A) 60% to 90% by mass of polyethylene glycol having an IOB value of 2.1 to 2.7,
(B) a multi-chain nonionic surfactant having an IOB value of 1.0 to 1.5,
(C) a polyhydric alcohol other than the component (A), and (D) a cooling agent,
The mass ratio A / B between the component (A) and the component (B) is 11 to 400,
The mass ratio D / B between the component (D) and the component (B) is 0.02 to 5.

  According to the present invention, it is possible to solve the above-described problems and achieve the above-mentioned object, and is excellent in blood circulation promotion feeling and warmth sustainability at any time from use to drying, and at low temperature stability. Can also provide an excellent scalp hair cosmetic.

FIG. 1 is an image diagram of expression of warm feeling, cool feeling, and blood circulation promotion in the scalp hair cosmetic of the present invention.

(Scalp hair cosmetics)
The scalp hair cosmetic of the present invention contains (A) polyethylene glycol, (B) a multi-chain nonionic surfactant, (C) a polyhydric alcohol other than the component (A), and (D) a refreshing agent. Preferably, it contains (E) a blood circulation promoter and further contains other components as necessary.

  The scalp hair cosmetic is composed of the polyethylene glycol as the component (A), the multi-chain nonionic surfactant as the component (B), the polyhydric alcohol other than the component (A) as the component (C), and the ( D) By containing the component refreshing agent in a predetermined ratio, each of these components acts synergistically, and surprisingly, the blood circulation promotion feeling and the warmth can be maintained both during use and during drying. It has been found that, while being excellent, it has an excellent effect of improving low-temperature stability.

<(A) Polyethylene glycol>
The polyethylene glycol as the component (A) is blended for the purpose of imparting a blood circulation promotion feeling, a warm feeling feeling, and a moist feeling of the finish.
The polyethylene glycol as the component (A) is not particularly limited as long as the IOB value is 2.1 to 2.7, and can be appropriately selected according to the purpose. For example, polyethylene glycol 200 having an average molecular weight of 190 to 220 (IOB value 2.7), polyethylene glycol 300 having an average molecular weight of 280 to 320 (IOB value 2.4), polyethylene glycol 400 having an average molecular weight of 380 to 420 (IOB value 2.3), polyethylene glycol 600 having a molecular weight of 570 to 630 (IOB value 2.1). Depending on the product, for example, polyethylene glycol 200 may have a # between the polyethylene glycol and the numerical value, such as polyethylene glycol # 200. These may be used alone or in combination of two or more. Among these, polyethylene glycol having an IOB value of 2.3 to 2.7 is preferable from the viewpoint of sustaining the sense of warmth, and polyethylene glycol having an IOB value of 2.4 from the point of high temperature rise effect due to hydration. 300 is particularly preferred.
If the IOB value is less than 2.1, the sustainability of warm feeling may be deteriorated, and polyethylene glycol having an IOB value exceeding 2.7 is not commercially available at present. The IOB value is a value obtained by rounding off the second decimal place.

Here, the IOB value refers to the ratio of the inorganic value (IV) to the organic value (OV) in the organic conceptual diagram, that is, “inorganic value (IV) / organic value (OV)”. The organic conceptual diagram was proposed by Satoshi Fujita, and details thereof are described in “Pharmaceutical Bulletin”, 1954, vol. 2, 2, p. 163-173, “Area of Chemistry”, 1957, vol. 11, 10, p. 719-725, "Fragrance Journal", 1981, vol. 50, p. 79-82 etc. That is, the source of all organic compounds is methane (CH ₄ ), all other compounds are all regarded as derivatives of methane, and certain numbers are set for the carbon number, substituent, transformation part, ring, etc. The score is added to obtain an organic value and an inorganic value, and these values are plotted on a diagram with the organic value on the X axis and the inorganic value on the Y axis. This organic conceptual diagram is also shown in “Organic Conceptual Diagram-Basics and Applications” (by Yoshio Koda, Sankyo Publishing, 1984).
The average molecular weight of the polyethylene glycol can be measured by applying the test method (p1378 to p1381) of polyethylene glycol 200 to 600 listed in the Quasi-drug Raw Material Standard 2006 (Pharmaceutical Daily News).

  From the viewpoint of sustaining warmth and promoting blood circulation, the content of polyethylene glycol having an IOB value of 2.1 to 2.7 of the component (A) is 60% by mass with respect to the total amount of the scalp hair cosmetic. % To 90% by mass, preferably 80% to 90% by mass. When the content exceeds 90% by mass, the low-temperature stability may be deteriorated, and when it is less than 60% by mass, the persistence of warmth, the blood circulation promotion feeling, and the low-temperature stability may be deteriorated. .

<(B) Multi-chain nonionic surfactant>
The (B) component multi-chain nonionic surfactant is a nonionic surfactant having a three-branched chain structure such as a glycerin skeleton.
The (B) component multi-chain nonionic surfactant is blended for the purpose of improving the stability of the ester oil or the cationic surfactant at low temperatures and improving blood circulation promotion.
From the viewpoint of the low-temperature stabilization effect, the multi-chain nonionic surfactant as the component (B) is a multi-chain nonionic surfactant having an IOB value of 1.0 to 1.5, and an IOB value of 1 If it is less than 0.0 or exceeds 1.5, the low-temperature stability is deteriorated.
About the said IOB value, it is as having demonstrated with the polyethylene glycol of the said (A) component.

There is no restriction | limiting in particular as a multi-chain type nonionic surfactant of the said (B) component, According to the objective, it can select suitably, For example, it may abbreviate as polyoxyethylene (henceforth "POE"). ) Hydrogenated castor oil, sorbitan fatty acid ester, POE glyceryl isostearate, isostearic acid POE hydrogenated castor oil, and the like. These may be used alone or in combination of two or more.
Among these, sorbitan fatty acid ester, POE hydrogenated castor oil, and POE glyceryl isostearate are preferable from the viewpoint of low temperature stability, and sorbitan fatty acid ester and POE hydrogenated castor oil or sorbitan are preferable from the viewpoint of blood circulation promotion and low temperature stability. The combined use of a fatty acid ester and POE glyceryl isostearate is more preferred.

As the multi-chain nonionic surfactant of the component (B), an appropriately synthesized product may be used, or a commercially available product may be used.
There is no restriction | limiting in particular as said commercial item, According to the objective, it can select suitably, For example, EMALEX SPIS-100 (IOB value 1.0, sorbitan isostearate), EMALEX SPC-100 (IOB value) by a brand name. 1.2, sorbitan fatty acid esters such as palm oil fatty acid sorbitan); EMALEX HC-30 (IOB value 1.1, polyoxyethylene (30) hydrogenated castor oil), EMALEX HC-40 (IOB value 1.2, polyoxy) Ethylene (40) hydrogenated castor oil), EMALEX HC-50 (IOB value 1.3, polyoxyethylene (50) hydrogenated castor oil), EMALEX HC-60 (IOB value 1.4, polyoxyethylene (60) hydrogenated castor oil) Oil), EMALEX HC-80 (IOB value 1.5, polyoxyethylene (80) cured resin) POE hydrogenated castor oil such as Mashi oil; EMALEX GWIS-110 (IOB value 1.0, polyoxyethylene (10) glyceryl isostearate), EMALEX GWIS-125 (IOB value 1.4, polyoxyethylene isostearate (25) ) Glyceryl), PALE glyceryl isostearate such as EMALEX GWIS-140 (IOB value 1.5, polyoxyethylene (40) glyceryl isostearate); EMALEX RWIS-140 (IOB value 1.1, polyoxyethylene isostearate (40 ) Hydrogenated castor oil), EMALEX RWIS-150 (IOB value 1.2, polyoxyethylene isostearate polyoxyethylene (50) hydrogenated castor oil), etc. It is below. The number in parentheses after the POE indicates the average number of moles of oxyethylene (EO) added. These may be used alone or in combination of two or more.
Among these, sorbitan fatty acid ester having an IOB value of 1.0 to 1.2, polyoxyethylene hydrogenated castor oil having an IOB value of 1.2 to 1.5, and IOB from the viewpoint of blood circulation promotion and low temperature stability A polyoxyethylene glyceryl isostearate having a value of 1.0 to 1.5 is preferred, more preferably a sorbitan fatty acid ester having an IOB value of 1.0 to 1.2 and a polyoxy having an IOB value of 1.2 to 1.5. Combined use with ethylene hydrogenated castor oil, or combined use of sorbitan fatty acid ester having an IOB value of 1.0 to 1.2 and polyoxyethylene glyceryl isostearate having an IOB value of 1.0 to 1.5, IOB value Of sorbitan fatty acid ester having an IOB value of 1.2 to 1.5 and a combined use of polyoxyethylene hydrogenated castor oil having an IOB value of 1.2 to 1.5 is particularly preferable.

Mass ratio of sorbitan fatty acid ester having an IOB value of 1.0 to 1.2 and polyoxyethylene hydrogenated castor oil having an IOB value of 1.2 to 1.5 (sorbitan fatty acid ester / polyoxyethylene hydrogenated castor oil ) Is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 0.2 to 3 and more preferably 0.3 to 3 from the viewpoint of blood circulation promotion and low temperature stability.
The content of the sorbitan fatty acid ester having an IOB value of 1.0 to 1.2 is not particularly limited and may be appropriately selected depending on the intended purpose. And from the point of low-temperature stability, 0.01 mass%-3.5 mass% are preferable, and 0.1 mass%-3 mass% are more preferable. When the content is less than 0.01% by mass, the low-temperature stability may be deteriorated, and when it exceeds 3.5% by mass, the blood circulation promotion feeling may be lost.
The content of the polyoxyethylene hydrogenated castor oil having an IOB value of 1.2 to 1.5 is not particularly limited and may be appropriately selected depending on the intended purpose. From 0.01 mass% to 5 mass% is preferable with respect to the said scalp hair cosmetics whole quantity, and 0.1 mass%-3 mass% is more preferable. When the content is less than 0.01% by mass, the low-temperature stability may be deteriorated, and when the content exceeds 5% by mass, the blood circulation promotion feeling may be lost.

  The content of the (B) component multi-chain nonionic surfactant is not particularly limited and may be appropriately selected depending on the intended purpose. However, from the viewpoint of blood circulation promotion and low temperature stability, the scalp hair 0.05 mass%-7 mass% are preferable with respect to cosmetics whole quantity, and 0.2 mass%-6 mass% are more preferable. When the content is less than 0.05% by mass, sufficient low-temperature stability may not be obtained. When the content exceeds 7% by mass, the blood circulation promotion feeling is not sufficient, and stickiness after use occurs. There is.

<(C) Polyhydric alcohol>
The polyhydric alcohol as the component (C) is blended for the purpose of improving the sustainability of the warm feeling and the low temperature stability.
The polyhydric alcohol of the component (C) is not particularly limited as long as it is other than the polyethylene glycol of the component (A), and can be appropriately selected according to the purpose. For example, propylene glycol, glycerin, dipropylene glycol Hexylene glycol, 1,3-butylene glycol, diglycerin, diethylene glycol, sorbitol, and the like. These may be used alone or in combination of two or more.
Among these, propylene glycol and dipropylene glycol are more preferable from the viewpoint of durability of warm feeling and low temperature stability.
The content of the (C) component polyhydric alcohol is not particularly limited and may be appropriately selected depending on the intended purpose. However, the total amount of scalp and hair cosmetics has a warm feeling and low temperature stability. From the point of property, 5 mass%-38 mass% are preferable, and 10 mass%-17 mass% are more preferable. When the content is less than 5% by mass, the low-temperature stability may be deteriorated, and when it exceeds 38% by mass, the sustainability of the warm feeling may not be sufficient.

<(D) Coolant>
The said (D) component refreshing agent is mix | blended for the purpose of the improvement of the circulation promotion actual feeling and the sustainability of a warm feeling.

  There is no restriction | limiting in particular as a refreshing agent of said (D) component, According to the objective, it can select suitably, For example, L-menthol, DL-menthol, menthyl glyceryl ether, menthyl carboxamide, vanillyl butyl ether, menthone Camphor, borneol, cineolementon, methyl salicylate, menthyl malonate, glycosyl-monomenthyl-O-acetate, 3-l-menthoxypropane-1,2-diol, l-menthyl-3-hydroxybutyrate, spearmint oil, Peppermint oil, mint oil, eucalyptus oil, and the like. These may be used alone or in combination of two or more. Among these, L-menthol, DL-menthol, menthyl glyceryl ether, menthyl carboxamide, vanillyl butyl ether, camphor, spearmint oil, peppermint oil, peppermint oil, and eucalyptus oil are preferable from the viewpoint of a feeling of blood circulation promotion, L-menthol, Menthyl glyceryl ether is more preferable, and L-menthol is still more preferable.

  There is no restriction | limiting in particular in content of the refreshing agent of said (D) component, Although it can select suitably according to the objective, From the point of the blood circulation promotion feeling, with respect to the said scalp hair cosmetics whole quantity, it is 0. 01 mass%-3 mass% are preferable, and 0.1 mass%-1 mass% are more preferable. When the content is less than 0.01% by mass, the blood circulation promotion feeling and the persistence of warmth may not be obtained, and when it exceeds 3% by mass, the low-temperature stability may be deteriorated.

Here, FIG. 1 shows an image diagram of warmth, coolness, and blood circulation promotion in the scalp hair cosmetic of the present invention.
Three professional panelists feel about "warm feeling", "cool feeling", and "blood circulation promotion feeling" when using the scalp hair cosmetic of the present invention (the same composition as in Example 6 described later). FIG. 1 shows the percentage (%) of the number of people who were evaluated over time up to 300 seconds in the three stages of 2 points: somewhat felt, 1 point: not felt, and evaluated as 2 points or more.
From the result of FIG. 1, the scalp hair cosmetic composition of the present invention provides a warming effect due to the heat of hydration of the polyethylene glycol as the component (A) immediately after massage after application. About 30 seconds after application, the refreshing effect of the component (D) is exhibited, and the “cool feeling” and the “warm feeling” act synergistically to obtain a “blood circulation promotion feeling”. Sustained effect of “warmth”. Further, since the “cool feeling” persists even after the “warm feeling” disappears, it can be seen that the “blood circulation promotion feeling” continues until after the hair is rinsed.

<(E) Blood circulation promoter>
The (E) component blood circulation promoter is blended for the purpose of improving the sustainability of blood circulation promotion.
There is no restriction | limiting in particular as a blood-flow promoter of said (E) component, According to the objective, it can select suitably, There are few irritation | stimulations, From the point of the sustainability of a blood-flow promotion realization, for example, a loquat leaf extract, a assembly extract , Ginkgo biloba extract, benzyl nicotinate, capsicum extract, and the like. These may be used alone or in combination of two or more. Among these, loquat leaf extract and assembly extract are preferable.

  There is no restriction | limiting in particular as an extraction solvent for obtaining each said extract, According to the objective, it can select suitably, For example, lower alcohols, such as water, methanol, ethanol, propyl alcohol, isopropyl alcohol, butanol, isobutanol, etc. Or a hydrous lower alcohol; propylene glycol, 1,3-butylene glycol, 1,2-butylene glycol, 1,4-butylene glycol, 1,5-pentanediol, 1,2-pentanediol, 1,3-pentanediol, Polyhydric alcohol or hydrous polyhydric alcohol such as 1,4-pentanediol, 1,3,5-pentanetriol, glycerin, polyethylene glycol; acetone, ethyl acetate, diethyl ether, dimethyl ether, ethyl methyl ether, dioxane, acetonitrile Various organic solvents such as xylene, benzene, chloroform, carbon tetrachloride, phenol, toluene, etc .; acids (eg, hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, formic acid, acetic acid, etc.) adjusted at appropriate levels; alkalis (eg, hydroxylated) Sodium, potassium hydroxide, calcium hydroxide, ammonia, etc.). These may be used alone or in combination of two or more. Among these, at least one selected from water, ethanol, and 1,3-butylene glycol is preferable. However, if it is not preferable to use a solvent depending on the application, use only water or perform extraction using a highly volatile solvent that is easy to remove the solvent after extraction, and dissolve in water after removing the solvent. A method is also possible.

Each of the extracts can be further subjected to a purification operation after solvent extraction.
Examples of the purification operation include decomposition by adding an acid (eg, hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, organic acid, etc.) or alkali (eg, sodium hydroxide, calcium hydroxide, ammonia, etc.), fermentation or metabolism by a microorganism. Conversion, component adsorption by ion exchange resin, activated carbon, diatomaceous earth, etc., chromatography with various separation modes (eg ion exchange, hydrophilic adsorption, hydrophobic adsorption, size exclusion, ligand exchange, affinity, etc.) Fractionation used, filtration using filter paper or membrane filter, ultrafiltration membrane, etc., pressurization or depressurization, heating or cooling, drying, pH adjustment, deodorization, decolorization, long-term storage, etc. These can be arbitrarily selected and combined.

The loquat leaf extract is obtained by extracting loquat loquat leaves with about 30% to 80% ethanol solution or about 50% 1,3-butylene glycol solution.
The assembly extract is obtained by extracting the whole plant of the assembly with a 70% ethanol solution or 100% butylene glycol.
The Ginkgo biloba extract is obtained by extracting ginkgo biloba leaves with 50% ethanol solution or 50% butylene glycol. The ginkgo biloba extract preferably contains 1.0% by mass to 2.0% by mass in terms of solid content.

The loquat leaf extract includes those containing corosolic acid and those containing no corosolic acid, and both can be used. Among these, those containing corosolic acid are preferable from the viewpoint of improving the sustainability of the blood circulation promotion feeling, and those containing 0.02% by mass to 0.03% by mass of corosolic acid in loquat leaf extract are particularly preferable. preferable.
There is no restriction | limiting in particular as said loquat leaf extract, According to the objective, it can select suitably, For example, loquat leaf extract-J (1.4 loquat loquat extract 1.4 mass% (pure extract), water 49.3) % By weight, absolute ethanol 49.3% by weight, without corosolic acid), loquat leaf extract CA (1% by weight loquat leaf extract (pure extract)), 99% by weight 1,3-butylene glycol, 0.02 corosolic acid (Both made by Maruzen Pharmaceutical Co., Ltd.); Falco Rex Biwa Leaf B (1.5% by weight of Biwa leaf extract (pure extract), 49.25% by weight of water, 49.25 of 1,3-butylene glycol) % By weight, without corosolic acid), Falcolex Biwa leaf E (1.58% by weight of loquat leaf extract (pure extract), water 66.65% by weight, anhydrous ethanol 31.77% by weight, without corosolic acid) (All of which are manufactured by Ichimaru Pharcos Co., Ltd.), and the like. Among these, loquat leaf extract CA containing 0.02% by mass of corosolic acid is particularly preferable.

  There is no restriction | limiting in particular as said assembly extract, According to the objective, it can select suitably, For example, an assembly extract (1.16 mass% (extract pure part) of an extract, 69.19 mass% of absolute ethanol, water 29.65% by mass), assembly extract liquid SS (assembly extract 12.50% by mass (pure extract), 1,3-butylene glycol 87.50% by mass) (all manufactured by Maruzen Pharmaceutical Co., Ltd.) Can be mentioned. Among these, assembly extraction liquid SS is preferable.

  There is no restriction | limiting in particular as said ginkgo biloba extract, According to the objective, it can select suitably, For example, a ginkgo biloba leaf extract (2.00 mass% of ginkgo biloba extract (pure extract), absolute ethanol 49.00 mass) %, Water 49.00% by mass, manufactured by Maruzen Pharmaceutical Co., Ltd.), Falco rex ginkgo (Ginkgo biloba extract or ginkgo biloba leaf extract 2.0% by mass (extract)), 1,3-butylene glycol 49.0% by mass, water 49.0% by mass, manufactured by Ichimaru Falcos Co., Ltd.).

  The content of the blood circulation promoter of the component (E) is 0.004% by mass to 0.01% in terms of solid (extract) content with respect to the total amount of the scalp hair cosmetic from the viewpoint of sustainability of blood circulation promotion. Mass% is preferred. When the content is less than 0.004% by mass, the persistence of blood circulation promotion may be lost, and when the content exceeds 0.01% by mass, skin irritation (burning feeling) may be increased.

<Mass ratio A / B>
The mass ratio A / B between the component (A) and the component (B) is 11 to 400, and preferably 11 to 85, from the viewpoint of sustainability of warm feeling and low temperature stability. If it is in this numerical range, it has the advantage that precipitation at low temperature of ester oil and cationic surfactant in scalp hair cosmetics is suppressed, and it is excellent in low temperature stability. If the mass ratio A / B is less than 11, the sustainability of warm feeling may not be sufficient, and if it exceeds 400, precipitation may occur at a low temperature.

<Mass ratio D / B>
The mass ratio D / B between the component (D) and the component (B) is 0.02 to 5 and preferably 0.05 to 1.5 from the viewpoint of blood circulation promotion and low temperature stability. If it is in this numerical range, it has the advantage that it is excellent in low-temperature stability and is excellent in provision of the blood circulation promotion feeling. If the mass ratio D / B is less than 0.02, the effect of imparting a blood circulation promotion feeling may not be sufficient, and if it exceeds 5, precipitation at a low temperature may occur.

<Other ingredients>
In the scalp hair cosmetic of the present invention, other components can be appropriately used in appropriate amounts within a range not impairing the effects of the present invention.
The other components are not particularly limited and may be appropriately selected depending on the purpose. For example, semipolar surfactants, cationic surfactants, anionic polymers, nonionic polymers, polyols, organic salts, Moisturizers, solubilizers, antioxidants such as BHT and α-tocopherol; bactericides such as triclosan and trichlorocarban; viscosity modifiers such as hydroxypropylcellulose, fatty acid monoethanolamide, and fatty acid diethanolamide; UV absorbers, oxidation Anti-dandruff agents such as inhibitors, protein derivatives, animal and plant extracts, piroctone olamine, zinc pyrithione; anti-inflammatory agents such as dipotassium glycyrrhizinate; preservatives such as benzoic acid or salts thereof, parabens, caisson CG; citric acid, PH adjusters such as triethanolamine; ethylene glycol difatty acid Pearling agents such as ester, emulsions, hydrotropes, lower alcohols, vitamins, volatile oil, hydrophobic solvents, dilution solvents, dyes, perfumes, and the like.

There is no restriction | limiting in particular as said fragrance | flavor, According to the objective, it can select suitably, For example, the fragrance | flavor A, the fragrance | flavor B which were described in [Table 5]-[Table 10] of Unexamined-Japanese-Patent No. 2006-63044, A fragrance C, a fragrance D, etc. are mentioned.
The content of the fragrance composition is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 0.005% by mass to 40% by mass with respect to the total amount of the scalp hair cosmetic. 01 mass%-10 mass% are more preferable.

<Manufacturing method>
There is no restriction | limiting in particular as a manufacturing method of the scalp hair cosmetics of this invention, According to the objective, it can select suitably, For example, (A) Polyethylene glycol, (B) Multi-chain type nonionic surfactant, (C ) Prepare by mixing polyhydric alcohols other than the component (A), and (D) a refreshing agent, preferably (E) a blood circulation promoter, and other components as necessary, based on conventional methods. Can do.

<PH>
The pH is not particularly limited and may be appropriately selected according to the purpose. However, when the scalp hair cosmetic is diluted 10 times with water, 6 to 8 is preferable at 25 ° C. If it is this range, when used for the hair after shampooing, the liquidity becomes neutral when diluted with the moisture contained in the hair, which is preferable.
Here, the said pH can be measured based on the pH measurement method of a quasi-drug raw material specification 2006 general test method.

<Viscosity>
The viscosity is not particularly limited and may be appropriately selected depending on the intended purpose, but is preferably 1 Pa · s to 10 Pa · s, more preferably 1.2 Pa · s to 6 Pa · s at 25 ° C.
When the viscosity is less than 1 Pa · s, it may be difficult to use because it spills from the hand during use. When the viscosity exceeds 10 Pa · s, the discharge from the container deteriorates and the scalp hair cosmetics to the background There is a possibility that the spread becomes worse.
The said viscosity can be measured based on the viscosity measuring method 2nd method of the quasi-drug raw material specification 2006 general test method.

<Container>
The scalp hair cosmetic is not particularly limited and can be appropriately selected according to the purpose. For example, the scalp hair cosmetic can be selected appropriately according to the purpose, such as aluminum laminated tube, EVAL tube, aluminum tube, glass-deposited plastic tube, mechanical or differential pressure. A dispenser container, squeeze container, laminate film container, dropper container, stick container, bottle container, etc. can be filled.
The laminate film usually has two or more layers, and the material thereof is not particularly limited and can be appropriately selected according to the purpose. For example, polyethylene, polyethylene terephthalate, polyester, biaxially stretched polypropylene, Examples thereof include synthetic resins such as unstretched polypropylene, polyacrylonitrile, and ethylene vinyl acetate copolymer, paper, and aluminum-deposited plastic. Among these, considering the strength, flexibility, weather resistance, and the like, it is generally preferable to use one having 2 to 5 layers.

  There is no restriction | limiting in particular as a material of the said bottle, According to the objective, it can select suitably, For example, polyethylene, a polypropylene, a polyethylene terephthalate, a polystyrene, a polyvinyl chloride, an ethylene vinyl alcohol resin, an acrylonitrile styrene resin, ABS A resin, a resin such as polyamide, or glass can be used in combination of a single layer or two or more layers.

<Dosage form, application>
The scalp hair cosmetic composition of the present invention is not particularly limited and may be appropriately selected depending on the intended purpose. Examples thereof include shampoos, rinses, scalp conditioners, treatments, and styling agents. Among these, a rinse, a conditioner for skin, and a treatment are preferable.
The rinse, conditioner, and treatment include a type that is washed off after being applied to scalp hair and a type that is not washed off, but a conditioner for the background that is washed off after applied to scalp hair is particularly preferred.
The scalp hair cosmetic of the present invention can be suitably used as a conditioner for the background, and after rinsing with shampoo, the agent is applied to the wet background, massaged for an appropriate amount of time while being familiar with the background, and then rinsed thoroughly. If necessary, a rinse or conditioner may be used.

  Examples of the present invention will be described below, but the present invention is not limited to these examples. In addition, in the Example and comparative example which are shown below, content of each component shows a pure conversion value.

(Examples 1-34 and Comparative Examples 1-16)
According to the composition shown in Tables 1 to 12, the scalp hair cosmetics (skin conditioner) of Examples 1 to 34 and Comparative Examples 1 to 16 were prepared according to a conventional method. The scalp hair cosmetic obtained had a viscosity of 2 Pa · s to 6 Pa · s at 25 ° C. When this was diluted 10 times with water, the pH was adjusted to 6-8 at 25 ° C. In addition, pH was measured based on the pH measurement method of the quasi-drug raw material standard 2006 general test method.

  Next, about each scalp hair cosmetics (background conditioner) of an Example and a comparative example, various characteristics were evaluated as follows. The results are shown in Tables 1 to 12.

<"Durability of warmth", "Realization of blood circulation", and "Durability of realization of blood circulation">
About 15 g of each scalp hair cosmetic was applied to the scalp on a professional panel (20 women in their 20s to 50s), massaged for 1 minute, rinsed and dried (towel dry).
From the results of sensory evaluation of the "blood circulation promotion feeling" during washing (application-massage-rinsing), "sustainability of warm feeling" from washing to towel drying, and "sustainability of blood circulation promotion feeling" Judgment was made based on the evaluation criteria. The “sustainability of blood circulation promotion” was evaluated only for Examples 32 and 33.
The “blood circulation promotion feeling” means a feeling that blood circulation of the scalp is improved.

[Evaluation criteria for “sustainability of warmth”]
◎: 16 or more and 20 or less people who answered that the warmth sustainability is good ○: 12 or more and 15 people who answered that the warmth sustainability is good △: Persistence of warmth 6 or more and 11 or less people who answered that the performance is good ×: 5 or less who answered that the sustainability of the warm feeling is good

[Evaluation criteria for "promotion of blood circulation"]
◎: 16 or more and 20 or less respondents who feel that there is a blood circulation promotion ○: 12 or more and 15 or less respondents who feel that there is a blood circulation promotion △: Six people who respond that there is a feeling of blood circulation promotion 11 people or less ×: 5 or less people who answered that they had a blood circulation promotion feeling

[Evaluation criteria for “sustainability of blood circulation promotion”]
◎: 16 or more and 20 or less respondents said that blood circulation promotion persisted during towel drying ○: 12 or more and 15 or less respondents said blood circulation promotion persisted during towel drying △: Blood circulation promotion 6 or more and 11 or less people who answered that the feeling was sustained during towel drying ×: 5 or less who answered that the blood circulation promotion feeling was sustained until towel drying

<Low temperature stability>
40 g of each prepared scalp hair cosmetic was filled in a 50 mL glass vial, and left at −5 ° C. and stored for 4 weeks. The appearance of the glass vial after storage for 4 weeks was observed for the presence or absence of separation of the scalp hair cosmetic, and the low temperature stability was evaluated based on the following criteria.
〔Evaluation criteria〕
◎: Transparent ○: Almost transparent △: Cloudy ×: There is at least one of cloudiness and precipitate

* The value in parentheses for the E component indicates the value converted into the extract.

  Each component used in Examples 1 to 34 and Comparative Examples 1 to 16 is as shown in Table 13 below.

Examples of the aspect of the present invention include the following.
<1> (A) 60% to 90% by mass of polyethylene glycol having an IOB value of 2.1 to 2.7,
(B) a multi-chain nonionic surfactant having an IOB value of 1.0 to 1.5,
(C) a polyhydric alcohol other than the component (A), and (D) a cooling agent,
The mass ratio A / B between the component (A) and the component (B) is 11 to 400,
A scalp hair cosmetic, wherein the mass ratio D / B of the component (D) and the component (B) is 0.02 to 5.
<2> The (B) component multi-chain nonionic surfactant is at least one selected from sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, and polyoxyethylene glyceryl isostearate,
It is scalp hair cosmetics as described in said <1> whose content of the said (B) component is 0.2 mass%-6 mass%.
<3> The polyhydric alcohol other than (A) of the component (C) is at least one selected from propylene glycol, glycerin, dipropylene glycol, and hexylene glycol,
The scalp hair cosmetic according to any one of <1> to <2>, wherein the content of the component (C) is 10% by mass to 17% by mass.
<4> The cooling agent of component (D) is at least one selected from L-menthol and menthyl glyceryl ether,
The scalp hair cosmetic according to any one of <1> to <3>, wherein the content of the component (D) is 0.1% by mass to 1% by mass.
<5> The scalp hair cosmetic according to any one of <1> to <4>, further comprising (E) a blood circulation promoter.
<6> The scalp hair cosmetic according to any one of <1> to <5>, which is used after being applied to scalp hair and then washed away.

  The scalp hair cosmetic composition of the present invention is excellent in blood circulation promotion and warmth in both use and dryness, and is also excellent in low-temperature stability. For example, a shampoo, rinse, scalp conditioner It is used as a treatment, a styling agent, and the like, and is particularly suitable for a conditioner for the scalp that is washed off after being applied to scalp hair.

Claims (6)

(A) 60% to 90% by mass of polyethylene glycol having an IOB value of 2.1 to 2.7,
(B) 0.05% by mass to 7% by mass of a multi-chain nonionic surfactant having an IOB value of 1.0 to 1.5,
(C) Polyhydric alcohols other than the component (A), and (D) 0.01% by mass to 3% by mass of a refreshing agent,
The (B) component multi-chain nonionic surfactant is at least one selected from sorbitan fatty acid ester, polyoxyethylene hydrogenated castor oil, and polyoxyethylene glyceryl isostearate,
The mass ratio A / B between the component (A) and the component (B) is 11 to 400,
A scalp hair cosmetic, wherein the mass ratio D / B between the component (D) and the component (B) is 0.02 to 5. The scalp hair cosmetic according to claim 1, wherein the content of the component ( B) is 0.2 mass% to 6 mass%. (C) The polyhydric alcohol other than component (A) is at least one selected from propylene glycol, glycerin, dipropylene glycol, and hexylene glycol,
The scalp hair cosmetic according to any one of claims 1 to 2, wherein a content of the component (C) is 10% by mass to 17% by mass. (D) The refreshing agent of component is at least one selected from L-menthol and menthyl glyceryl ether,
The scalp hair cosmetic according to any one of claims 1 to 3, wherein the content of the component (D) is 0.1% by mass to 1% by mass.   The scalp hair cosmetic according to any one of claims 1 to 4, further comprising (E) a blood circulation promoter.   The scalp hair cosmetic according to any one of claims 1 to 5, which is used after being applied to scalp hair and then washed away.