JP6478708B2 - Aerosol-type cosmetics for scalp and hair - Google Patents

Description

The present invention relates to an aerosol-type cosmetic for scalp and hair, and more specifically, excellent in stability such as emulsifying power and dispersibility, good stability at high and low temperatures, and has a cool feeling and scalp and hair without dripping during use. The present invention relates to a cosmetic material having a good feeling of use, such as familiarity with the skin, the roughness of the scalp and hair, and the absence of stickiness.

In recent years, with the trend of the non-silicon boom in the hair care market, preparations that can perform care without placing a burden on hair have attracted attention. In addition to awareness of not only hair but also scalp care, various companies have developed and proposed various preparations for scalp care.

As cosmetics for the scalp, conventionally, for example, aerosol-type preparations represented by tonics, hair restorers, scalp refreshers, etc. are mentioned, and most of them are blended with components having a refreshing feeling such as ethanol and refreshing agents. ing. This is because, usually, a refreshing feeling can be obtained by increasing the blending ratio of the gas to the stock solution or a high blending ratio of the refreshing agent or ethanol.

  However, when a refreshing agent such as menthol is used (see Patent Literature 1 and Patent Literature 2), although a refreshing feeling can be obtained, an unnatural stimulus is felt on the scalp, or a lower alcohol such as ethanol is highly blended (Refer patent document 2) Although a preferable refreshing feeling is obtained, the problem that stability of a formulation deteriorates arises.

In order to solve the deterioration of the stability of the preparation due to the incorporation of a lower alcohol, a hair-styling polymer, a specific polyethylene oxide, a composition combining a surfactant and ethanol (see Patent Document 3), carboxyl-based, cellulose-based, gum-based Although a composition to which a thickening water-soluble polymer such as the above is added has been proposed (see Patent Documents 4 and 5), these compositions solve the problem in terms of stability, but are stable in formulation. Because it is sticky or stiff due to the effects of water-soluble polymers and active agents added to maintain the properties, it may become sticky or stiff when used with actual scalp and hair. From this point of view, it was not fully satisfactory as a cosmetic for scalp and hair.

Moreover, although the composition characterized by having a bubble-breaking sound at the time of application | coating, the composition (refer patent document 6 and patent document 7) which emphasizes a feeling of use is also proposed, stimulating five senses. Because of the combination of water-soluble polymers, active agents, and oils, it may become sticky or stiff when used on the actual scalp and hair, so it can be sufficiently satisfied as a cosmetic for scalp and hair. It wasn't.

Therefore, it has excellent stability such as emulsifying power and dispersibility, good high / low temperature stability, no dripping during use, good feeling of coolness, familiarity to scalp and hair, and smoothness and non-stickiness of scalp and hair There has been a strong demand for the development of cosmetics for scalp and hair that have a good feel to use.

JP 2005-126347 A JP 2001-335468 A JP 2009-256367 A Japanese Patent Laid-Open No. 11-35419 Japanese Patent No. 4688579 JP 2003-335629 A Japanese Patent No. 5276781

In view of the above situation, the present invention is excellent in stability such as emulsifying power and dispersibility, has high temperature and low temperature stability, and does not spill during use, and feels cool, familiar to the scalp and hair, scalp and hair An object of the present invention is to provide an aerosol-type cosmetic for scalp and hair having a good feeling of use such as no wrinkle and no stickiness.

In order to achieve the above object, the present invention has been made through extensive research, and as a result, combined polyoxyethylene hydrogenated castor oil, silicic acid anhydride having an average particle size of 4 μm to 7 μm, and ethanol in a specific blending ratio. It has been found that the above-mentioned problems of cosmetics for scalp and hair are solved.

That is, in the aerosol cosmetic for scalp and hair of the present invention, the following component (A) is 0.05 to 2.0% by mass in the stock solution, component (B) is 0.05 to 0.5% by mass in the stock solution, and (C) A thickening water-soluble polymer comprising a stock solution containing 5.0 to 25.0% by mass of a component in a stock solution and a propellant, characterized in that it emits a sound when sprayed. It is an aerosol type cosmetic for scalp and hair that does not contain.
(A) Polyoxyethylene hydrogenated castor oil (B) Silica anhydride (C) ethanol having an average particle size of 4 μm to 7 μm

Furthermore, the mass ratio of the stock solution and the propellant is preferably 70/30 to 40/60, and the mass composition ratio in the stock solution of (A) + (B) is 0.3% by mass or more, and the stock solution It is more preferable that the value of (C) / ((A) + (B)) in each mass of (A) to (C) is 66 or less.

According to the aerosol-type cosmetics for scalp and hair of the present invention, stability such as emulsifying power and dispersibility, and high / low temperature stability are good, and there is no dripping at the time of use, cool feeling, familiarity to scalp and hair, scalp And the feel of use such as hair is not stiff or sticky.

Hereinafter, the aerosol cosmetic for scalp and hair of the present invention will be described in detail.
The compounding quantity of the component (A) polyoxyethylene hydrogenated castor oil of this invention is the range of 0.05-2.0 mass% in a stock solution, Preferably it is the range of 0.2-1.0 mass%. If the content is more than 2.0% by mass, the hair becomes stiff and the finish feeling is poor, and if it is less than 0.05% by mass, the stock solution and the gas are not emulsified, which is not suitable from the viewpoint of stability.

The silicic acid anhydride which is the component (B) of the present invention is not particularly limited, but silica powder having an average particle diameter of about 4 μm is preferably used. Usually, such porous synthetic silica powder is, for example, silopure 25 (average particle diameter 4 μm), silo pure 30 (average particle diameter 7 μm) (manufactured by Fuji Silysia Chemical Ltd.); silicia 350, 320, 550, 730 ( The average particle size is about 4 μm) (manufactured by Fuji Silysia Chemical Ltd.). The average particle size is measured by a laser method (JIS K 1150).

When the average particle size of the component (B) of the present invention is remarkably large, dispersibility in the cosmetic composition may be deteriorated, which may cause clogging and the like when used as an aerosol formulation. Absent.

The compounding quantity of (B) component of this invention is the range of 0.05-0.5 mass% with respect to the undiluted | stock solution. When the content is less than 0.05% by mass, emulsification of the stock solution and gas becomes insufficient, and a sticky feeling during use occurs, and when the blending amount exceeds 0.5% by mass, the scalp and hair In addition to the feeling of being stiff, the feeling of use is significantly worsened and there is a possibility of clogging.

As ethanol which is the component (C) of the present invention, ethanol or denatured ethanol outside of governmental specifications can be used, and these ethanols may be obtained by any method of fermentation and synthesis.

Content of ethanol which is (C) component of this invention is 5.0-25.0 mass% or less in a stock solution, Preferably it is the range of 5.0-10.0 mass%. When the content exceeds 25% by mass, emulsification of the undiluted solution is deteriorated and the quality may be deteriorated.

Moreover, the mass composition ratio in the stock solution of (A) + (B) is less than 0.3% by mass, and (C) / ((A) + (B) in each mass of (A) to (C) in the stock solution. When the value of) exceeds 66, it is not desirable because the emulsification of the undiluted solution becomes worse and the quality is lowered.

In the aerosol type cosmetic for scalp and hair of the present invention, a propellant is used to spray the aerosol stock solution. Although it does not specifically limit as a propellant, Hydrocarbons, such as liquefied petroleum gas (LPG) which has propane, n-butane, i-butane etc. as a main component, dimethyl ether, etc. are mentioned. These propellants can be used alone or in admixture of two or more, and the mixing ratio (mass ratio) of the aerosol stock solution and the propellant is aerosol stock solution / propellant = 70/30 to 40/60. And preferably in the range of 50/50 to 40/60. When the blending ratio of the aerosol stock solution is 70 or more, the cooling sensation during use is insufficient, and sufficient bubbles are not formed at the time of injection, and the function of the present invention is not exhibited. Moreover, since the emulsification of a stock solution will worsen and quality will fall when the compounding ratio of an aerosol stock solution is less than 40, it is not desirable.

In the present invention, adjustment of the injection amount differs depending on the composition of the aerosol stock solution, the ratio of the mixture with the propellant, the injection port shape of the injection button, etc., but mainly adjusts the valve hole diameter (stem hole diameter, housing hole diameter) and the injection button hole diameter as appropriate. This can be done. However, since it becomes difficult to obtain a uniform spray when the stem hole diameter is increased, it is effective to sufficiently increase the housing hole diameter.

Furthermore, the aerosol-type cosmetics for scalp and hair of the present invention include other components, amino acids, extract extracts, antibacterial agents, ultraviolet absorbers, antioxidants, vitamins, as long as the object of the present invention is not impaired. Ingredients, feel modifiers, moisturizers, fragrances and the like can be appropriately blended. For example, the amino acid and / or salt thereof is not particularly limited as long as it is an amino acid that can be usually used in cosmetics and the like. Specifically, glycine, leucine, lysine HCl, glutamic acid, histidine HCl, serine, valine, aspartic acid. Examples thereof include Na, threonine, alanine, isoleucine, L-cysteine, L-cystine, L-tyrosine, L-tryptophan, L-methionine, L-phenylalanine, and salts thereof. Examples of moisturizers include butylene glycol and glycerin. Oils such as polyols and animals and plants, silicones, esters and the like are listed, and examples of the antibacterial agents are paraoxybenzoic acid esters and phenoxyethanol.

The aerosol-type cosmetic for scalp and hair of the present invention is not limited, but can be, for example, a transparent liquid, a gel, a mist, a spray, or a foam when jetted. Moreover, the aerosol-type cosmetics for scalp and hair of the present invention can be produced by a conventional method.

EXAMPLES Hereinafter, although an Example demonstrates this invention concretely, the technical scope of this invention is not limited by these Examples. In addition, about the aerosol type cosmetics for scalp and hair described in Examples and Comparative Examples, the emulsifying power / dispersibility of the preparation, high temperature stability, low temperature stability, feeling of use (cool feeling), dripping at the time of use, finish ( The test method concerning the feeling of stickiness and stickiness is shown below.

(1) Emulsifying power / dispersibility of the preparations After adjusting the cosmetics shown in Examples and Comparative Examples, the emulsifying power and dispersibility of the preparations were evaluated by the following methods. After filling the aerosol stock solution and gas, it was swung up and down several times with a constant force, and the state was visually confirmed. At that time, visual confirmation is performed using a 100 ml pressure bottle (aerosol test bottle set, manufactured by Tokyo Polymer Co., Ltd.).
<Evaluation criteria>
◎: Stock solution and gas are completely mixed, uniform state ○: Most of stock solution and gas are mixed, liquid gas can be confirmed at the top △: About half of the stock solution and gas are mixed, and the stock solution and gas are mixed State where separation can be clearly confirmed ×: State where stock solution and gas were not mixed at all

(2) High temperature stability The obtained scalp and hair cosmetics were allowed to stand at 45 ° C. for 3 days, and then visually evaluated according to the following criteria.
<Evaluation criteria>
○: The emulsified state is mostly maintained, and separation is observed at a constant rate in the lower part ×: The emulsified state is a state other than the above

(3) Low temperature stability The cosmetics for scalp and hair obtained were allowed to stand at 0 ° C. for 3 days, and then visually evaluated according to the following criteria.
<Evaluation criteria>
○: The emulsified state is mostly maintained, and separation is observed at a constant rate in the lower part ×: The emulsified state is a state other than the above

(4) Feeling of use (cool feeling)
For 5 professional panels, the scalp and hair cosmetics shown in the examples and comparative examples were applied to the scalp and pushed a certain number of times. A sensory test was performed on the cooling sensation felt on the scalp at that time, and evaluation was performed according to the following criteria.
<Evaluation criteria>
◎: It is judged that 4 or more people on the panel feel cold feeling ○: It is judged that 3 or more people on the panel feel cold feeling △: It is judged that 2 or more people on the panel feel cold feeling ×: Cold feeling is felt More than 4 panelists judged not to feel

(5) Drainage at the time of use For 5 specialized panels, the scalp and hair cosmetics shown in Examples and Comparative Examples were applied to the scalp and pushed a certain number of times. A sensory test was conducted on the state in which the cosmetic material flowed down from the application part at that time (drip), and the evaluation was performed according to the following criteria.
<Evaluation criteria>
◎: More than 4 panelists judge that dripping does not matter ○: 3 or more panel judges that dripping does not bother △: More than 2 panelists judge that dripping does not matter ×: More than 4 panelists have determined that dripping is a concern

(6) Finish (Stiff feeling)
For 5 professional panels, the scalp and hair cosmetics shown in the examples and comparative examples were applied to the scalp and pushed a certain number of times. A sensory test was performed on the hair at that time, and evaluation was performed according to the following criteria.
<Evaluation criteria>
◎: Four or more panelists judged not to feel sticky ○: Three or more panel judges judged not to feel sticky △: Two or more panel judges judged not to feel sticky ×: judged to be stiff 4 or more panels

(7) Finish (stickiness)
For 5 professional panels, the scalp and hair cosmetics shown in the examples and comparative examples were applied to the scalp and pushed a certain number of times. A sensory test was performed on the hair at that time, and evaluation was performed according to the following criteria.
<Evaluation criteria>
◎: More than 4 panel members do not feel sticky ○: More than 3 panel members do not feel sticky △: More than 2 panel members do not feel sticky ×: Panels judged to be sticky 4 or more

Examples 1-12 and Comparative Examples 1-5
The treatments shown in Table 1 were prepared according to conventional methods, and the emulsifying power / dispersibility, high-temperature stability, low-temperature stability, feeling of use (cool feeling), and finish (no feeling of stickiness or stickiness) were evaluated. The results are also shown in Table 1.

As is apparent from Table 1, the scalp and hair cosmetics of the examples according to the present invention showed superior performance as compared with the comparative examples.

As is apparent from Table 1, the aerosol-type cosmetics for scalp and hair of the present invention of Examples 1 to 12 are emulsifying power / dispersibility, high-temperature stability, low-temperature stability, feeling of use (cool feeling), and in use. It was excellent in dripping and finishing (no stickiness or stickiness).

Hereinafter, other prescription examples of the aerosol type cosmetic for scalp and hair of the present invention will be given as examples. For the cosmetics of these examples, the emulsifying power / dispersibility, high temperature stability, low temperature stability, feeling of use (cool feeling), dripping at the time of use, and finish (feeling of stickiness, stickiness) Each item was examined, and all the examples were excellent because they had excellent characteristics.

Example 11 Tonic <stock solution>
(1) Ethanol 15.0%
(2) Polyoxyethylene hydrogenated castor oil 0.6%
(3) DPG 3.0%
(4) Cyclohexane-1,4-dicarboxylic acid bisethoxydiglycol 0.1%
(5) Phenoxyethanol 0.1%

(6) Silica * 1 0.3%
(Silo Pure 25, manufactured by Fuji Silysia Chemical Ltd.)
(7) L-serine 0.2%
(8) (Glyceryl amidoethyl methacrylate)
/ Stearyl methacrylate) copolymer * 2 0.01%
(Ceracte-V, manufactured by NOF Corporation)
(9) Hamelis water 1.0%
(10) Perfume appropriate amount (11) Water remaining

<Gas>
(12) LPG
<Filling> Stock solution / LPG mass ratio 50/50

(Manufacturing method) (1)-(11) was mixed and dissolved uniformly, and the container was filled with (12) to adjust the tonic.

Claims (1)

The following component (A) is 0.05% by mass to 2.0% by mass in the stock solution, component (B) is 0.05% by mass to 0.5% by mass in the stock solution, and component (C) is 5.0% by mass in the stock solution. % 25.0 wt%, Ri Do from a stock solution and propellant containing 75.0 wt% ～94.0 wt% in the stock solution of component (D),
The mass ratio of the stock solution and propellant is 70 / 30-40 / 60,
And the mass composition ratio in the stock solution of (A) + (B) is 0.3% by mass or more, and (C) / ((A) + () in each mass of (A) to (C) in the stock solution. B) the value of) the Ru der 66 below, that feature to emit pulsating character and sound at the time of injection, thickening water-soluble polymer scalp hair aerosol cosmetic composition containing no.
(A) Polyoxyethylene hydrogenated castor oil (B) Silica anhydride (C) ethanol having an average particle size of 4 μm to 7 μm
(D) Water