JPH05178723A - Oil-in-water solid cosmetic - Google Patents

Abstract

PURPOSE:To provide the subject cosmetic of new formulation having oil-in-water cosmetic characteristics, very well in application feeling in addition to excellent usability and portability, also outstanding in functionality such as water resistance and water repellency. CONSTITUTION:The objective cosmetic is characterized by comprising (A) a water-soluble solidifier (e.g. agar-agar), (B) a water-soluble tack agent (e.g. cellulose derivative such as hydroxyethyl cellulose), (C) a lubricant (e.g. a vegetable oil, animal oil, mineral oil, or synthetic oil), and (D) water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid cosmetic composition having a novel dosage form, which is excellent in usability and portability and has a very good usability.

[0002]

2. Description of the Related Art Conventionally, most of solid cosmetics such as foundations are non-aqueous type such as powder type and oil type, and few contain water. recent years,
Although solidified liquid type foundations are on the market, these are water-in-oil type (W / O type) and oil-in-water type (O / W type) agents. I can't see the type.

[0003]

Although these water-in-oil type cosmetics have various advantages, they are not as good as oil-in-water type cosmetics in terms of freshness, refreshing feeling, skin familiarity and the like. There wasn't. On the other hand, since oil-in-water cosmetics are liquid to cream-like liquid types, most container forms are bottles or tubes sealed with a cap, which is inconvenient in terms of usability and portability. It was something.

Therefore, there has been a strong demand for a solid cosmetic which has oil-in-water type cosmetic properties and is excellent in usability and portability and can be stored compactly.

[0005]

Under such circumstances, the present inventor has conducted diligent studies, and as a result, if water and an oil agent are solidified by combining a water-soluble solidifying agent and a water-soluble adhesive, The present invention has been completed by finding that a solid cosmetic having excellent usability and portability can be obtained while having oil-type cosmetic properties.

That is, the present invention provides the following components (a)-
(D) (a) Water-soluble solidifying agent (b) Water-soluble pressure-sensitive adhesive (c) Oil agent (d) Water is provided, and an oil-in-water type solid cosmetic composition is provided.

Examples of the water-soluble solidifying agent of the component (a) used in the present invention include agar, gelatin and sodium magnesium silicate, and agar is particularly preferable in terms of feeling in use. These water-soluble solidifying agents have
10.0% by weight (hereinafter referred to simply as%), especially 0.3 to 7.0%
It is preferable to blend in the range of.

The water-soluble pressure-sensitive adhesive as the component (b) is a water-soluble polymer which is not solidified by itself and is incorporated into cosmetics, and a gel obtained only with the water-soluble solidifying agent has a weak physical strength. , Is used to reinforce it. Examples of such water-soluble adhesives include cellulose derivatives such as methyl cellulose, hydroxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose; natural polymers such as sodium alginate, carrageenan, quince seed gum, xanthan gum, pectin; polyvinyl alcohol, carboxy. Examples thereof include synthetic polymers such as vinyl polymers, sodium polyacrylate, sodium polymethacrylate, polyglyceryl acrylate, and polyvinylpyrrolidone. These water-soluble adhesives have 0.05%
It is preferable to blend in the range of up to 2.0%, especially 0.1 to 1.0%.

As the oil agent of the component (c), various solid, semi-solid and liquid vegetable oils, animal oils, which are usually used in cosmetics,
Mineral oils and synthetic oils can be used, for example, oils and fats such as olive oil, jojoba oil, mink oil, and owl; waxes such as beeswax and candelilla wax; liquid paraffin,
Hydrocarbons such as microcrystalline wax and vaseline; fatty acids such as stearic acid and oleic acid; higher alcohols such as cetanol; esters such as isopropyl myristate; lanolin derivatives such as isopropyl lanolin fatty acid and lanolin alcohol; starch fatty acid esters; Examples thereof include silicone compounds such as methyl polysiloxane, methylphenyl polysiloxane, and dimethyl polysiloxane polymer having a three-dimensional crosslinked structure. These oil agents may be used alone or in combination of two or more,
It is preferable to add 1.0 to 30.0%, especially 2.0 to 20.0% of the total composition.

The component (d) water is 40.0% in the total composition.
-95.0%, especially 50.0-80.0% is preferable.

The oil-in-water type solid cosmetic composition of the present invention may further contain a hydrophobized powder as the component (e). By mixing this and dispersing it in the cosmetic composition,
Makeup cosmetics such as foundation can be obtained. Here, in the hydrophobized powder used as the component (e), the powder to be treated is not particularly limited as long as it is a cosmetic powder usually used in cosmetics, and examples thereof include titanium oxide, talc, and mica. , Kaolin, Magnesium carbonate, Calcium carbonate, Aluminum silicate, Magnesium silicate, Calcium silicate, Zinc oxide, Red iron oxide, Yellow iron oxide, Black iron oxide, Gunjou, Conger, Tar pigment, Natural pigment, Mica titanium, Iron oxide mica Titanium,
Examples include bismuth oxychloride, nylon powder and silk powder. Further, in the present invention, in order to impart water repellency, it is necessary that these cosmetic powders have been subjected to a hydrophobic treatment, and as the hydrophobic substance used for such a hydrophobic treatment, Examples thereof include fluorine compounds, silicone oils, metal soaps, waxes, fats and oils, hydrocarbons and the like. Of these, especially fluorine compounds,
Silicone-based oil agents are preferable, and as the fluorine compound,
For example, Asahi Guard AG530 (manufactured by Asahi Glass Co., Ltd.) or the like can be used.

It is preferable that the hydrophobized powder as the component (e) is added in an amount of 1.0 to 40.0%, particularly 5.0 to 30.0% in the total composition.

The oil-in-water solid cosmetic of the present invention contains, in addition to the above-mentioned essential components, components used in ordinary cosmetics such as moisturizers, preservatives, antioxidants, ultraviolet absorbers, cosmetic ingredients, and fragrances. , A surfactant, a lower monohydric alcohol, a lower polyhydric alcohol and the like can be appropriately blended within a range that does not impair the effects of the present invention.

The oil-in-water solid cosmetic composition of the present invention is prepared by heating and dissolving the components (a) and (b) in the component (d),
The component (c) and optionally the component (e) are stirred and mixed,
It can be produced by cooling and solidifying, for example, base cream, sun-cut cream, foundation,
It can be a solid product such as eye shadow or cheek red. The oil-in-water solid cosmetic composition of the present invention thus obtained has a form in which an oil agent is dispersed in the aqueous phase.

[0015]

EXAMPLES Next, the present invention will be further described with reference to examples, but the present invention is not limited to these examples. Examples 1 and 2, Comparative Examples 1 to 6 Foundation: A foundation having the composition shown in Table 1 was produced, and the following evaluation methods were used for the evaluation items shown in Table 2 together with the commercially available water-in-oil foundation (Comparative Example 6). And sensory evaluation was performed according to the evaluation criteria. The results are shown in Table 2. (Production method) A. (13) to (21) are dissolved by heating. B. (1) to (11) are added to A and mixed and dispersed. C. After adding (12) to B, mixing, filling in a container and cooling. (Evaluation) (1) Morphological retention: At 50 ° C., those that could maintain a solid state in a gold dish container were marked with ◯, and those that could not be maintained were marked with x. (2) Other evaluation items: <Evaluation method> A usage test by 10 expert panels was performed, and the absolute evaluation results of each person were averaged. <Evaluation criteria> Absolute evaluation; Very good: 3 points Good: 2 points Normal: 1 point Poor: 0 points ○: 2 points or more △: 1 point or more but less than 2 points ×: Less than 1 point

[0016]

[Table 1]

* 1: 1000 ml of water was added to 50 g of each pigment to make a slurry. On the other hand, 350 ml of water was added to 9 g of fluoroalkyl phosphate diethanolamine salt (Asahi Guard AG530, manufactured by Asahi Glass Co., Ltd.) to obtain an emulsion. This emulsion was obtained by gradually adding the emulsion to the above slurry, mixing the mixture, and then allowing it to stand at room temperature. * 2: Laponite XLG (manufactured by Laponite) * 3: Kunipia G (manufactured by Kunimine Industries) * 4: Carbopol 940 (manufactured by Goodrich Chemical Co.)

[0018]

[Table 2]

As is clear from the results shown in Table 2, the foundations of Examples 1 and 2 were excellent in shape retention, excellent in usability and portability, and had very good feeling in use.

Example 3 Eyeshadow: (Formulation) (1) Silicone-treated titanium oxide ^{* 5} 2.0 (%) (2) Silicone-treated titanium mica ^{* 5} 10.0 (3) Silicone-treated sericite ^{* 5} 3.0 (4) Color pigment 1.0 (5) Sorbitan sesquioleate 2.0 (6) Squalane 1.0 (7) Candelilla wax 1.0 (8) Perfume proper amount (9) Preservative proper amount (10) 1,3-butylene glycol 5.0 (11) Agar 0.5 (12) Gelatin 1.5 (13) Sodium polymethacrylate 0.1 (14) Purified water Remaining amount * 5: 2% silicone obtained by adding various pigments and methyl hydrogen polysiloxane to isopropyl alcohol and baking at 120 ° C for 2 hours. Treated pigment. (Production method) Production is carried out in the same manner as in Example 1.

Example 4 Hoho Red: (Formulation) (1) Silicone treated titanium oxide ^{* 5} 5.0 (%) (2) Silicone treated mica titanium ^{* 5} 5.0 (3) Silicone treated sericite ^{* 5} 5.0 (4) Silicone treated Talc ^{* 5} 10.0 (5) Coloring pigment Appropriate amount (6) Polyoxyethylene (3) Castor oil 1.0 (7) Soybean phospholipid 1.0 (8) Starch fatty acid ester 0.5 (9) Isocetyl stearate 5.5 (10) Perfume Appropriate amount (11 ) Preservative Appropriate amount (12) 1,3-butylene glycol 5.0 (13) Sodium magnesium silicate 5.0 (14) Polyvinylpyrrolidone 1.0 (15) Purified water Remaining amount * 5: Various pigments and methylhydrogenpolysiloxane in isopropyl alcohol In addition, a 2% silicone-treated pigment obtained by baking at 120 ° C for 2 hours. (Production method) Production is carried out in the same manner as in Example 1.

Example 5 Base cream: (Formulation) (1) Polyoxyethylene (3) Castor oil 1.5 (%) (2) Dimethylpolysiloxane 0.5 (3) Perfume proper amount (4) Preservative proper amount (5) Gelatin 2.5 (6) Carboxyvinyl polymer ^{* 4} 0.8 (7) Sodium hydroxide 0.2 (8) Glycerin 3.0 (9) Purified water residual amount * 4: Carbopol 940 (manufactured by Goodrich Chemical Co.) (Production method) A. Dissolve (4) to (9) with heating. B. (1) and (2) are added to A and mixed and dispersed. C. After adding (3) to B, mixing, filling in a container and cooling.

[0023]

The oil-in-water type solid cosmetic composition of the present invention has a novel dosage form, and is excellent in usability and portability, and has a very good feeling in use, and further, it has excellent water resistance and water repellency. It is also excellent in terms of functionality.

Claims (2)

[Claims] 1. An oil-in-water solid type comprising the following components (a) to (d) (a) water-soluble solidifying agent (b) water-soluble adhesive (c) oil agent (d) water Cosmetics. 2. The following components (a) to (e) (a) water-soluble solidifying agent (b) water-soluble pressure-sensitive adhesive (c) oil agent (d) water (e) hydrophobized powder Characteristic oil-in-water solid cosmetic.