JPH1192333A - Oil-in-water type solid cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject cosmetic, capable of being housed in a compact container or the like, easy to carry, having qualities such as viridity and high refreshing feeling and good make up persistency and excellent also in shape- retaining properties and useful for foundation or the like by including a water- soluble solidifying agent such as agar, starch or the like. SOLUTION: This solid cosmetic comprises (A) preferably 0.3-7 wt.% water-soluble solidifying agent selected from agar or gelatin, (B) preferably 1-5 wt.% starch such as corn starch, (C) preferably 1-30 wt.% oil solution such as microcrystalline wax an (D) preferably 40-95 wt.% water and optionally aerosol-like hydrophobically treated silica subjected to hydrophobic treatment with methylhydrogen polysiloxane or the like. The cosmetic has high adhesive feeling to skin and high adhesive properties to vessel and does not make shining due to perspiration or sebum prominent and is useful as eye shadow, cheek rouge, lipstick or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention can be stored in a compact container or the like, is excellent in portability, is fresh, has a refreshing feeling,
Oil-in-water solid cosmetics that have quality such as good skin familiarity, have a good sense of adhesion to the skin, have good makeup persistence, and have high adhesion to containers and excellent shape retention. Further, the present invention relates to an excellent oil-in-water type solid cosmetic in which shine due to sweat and sebum is not conspicuous.

[0002]

2. Description of the Related Art Conventionally, solid cosmetics such as foundations are mostly non-aqueous, such as powder type and oil type, and few contain water. recent years,
Solidified liquid-type foundations are on the market, but these are water-in-oil (W / O type) dosage forms and oil-in-water (O / W type). There are few dosage forms, and only those disclosed in JP-A-7-17828 are known.

[0003]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No. 7-17 / 1995
The oil-in-water type solid cosmetic disclosed in Japanese Patent No. 828 has quality such as freshness, high refreshing sensation, good skin familiarity, and excellent in portability which can be stored in a compact container or the like. Although the water-soluble solidifying agent has low adhesion to the inner surface of the compact container, when the surface of the oil-in-water type solid cosmetic is rubbed using a prop such as a mat, the cosmetic becomes Sometimes it came off the container. As a countermeasure for this, some measures on the container such as roughening the inner surface of the container and coating the inner surface of the container with a hydrophilic substance have been required. Further, since a highly hydrophilic cosmetic film is formed on the skin by the water-soluble solidifying agent, a phenomenon in which the skin surface shines due to sweat or sebum, that is, so-called shininess, is easily noticeable after sweating.

[0004] For this reason, the above-mentioned oil-in-water type solid cosmetics can be stored in a compact container or the like, which is an advantage of the above-mentioned oil-in-water type solid cosmetics.
It is fresh, has a refreshing sensation, has good skin familiarity, and has good adhesion to the skin, good makeup persistence, good adhesion to the container, and excellent shape retention. Further, there has been a demand for the development of cosmetics in which shine due to sweat and sebum is not noticeable.

[0005]

Means for Solving the Problems As a result of intensive studies in the above situation, the present inventors have found that when water and an oil agent are solidified by combining a water-soluble solidifying agent and starch, the characteristics of the oil-in-water type cosmetic are improved. It has been found that a solid cosmetic having high adhesion to the skin, improved makeup persistence, and high adhesion to the container and excellent in shape retention and portability can be obtained while having the formula (1). Furthermore, it has been found that when the fumed silica is treated with hydrophobized silica, shine caused by sweat and sebum can be more effectively suppressed, and the present invention has been completed.

That is, the present invention provides the following components (a) to
(D); (a) a water-soluble solidifying agent selected from agar or seratin; (b) a starch; (c) an oil agent; and (d) water. Furthermore, the present invention relates to the above oil-in-water type solid cosmetic containing fumed hydrophobic silica as component (e).

The water-soluble solidifying agent of the component (a) used in the present invention solidifies an oil-in-water type cosmetic, and gives a hardness that can withstand usability and portability. This component (a)
It is selected from agar or gelatin, and its production place, origin and the like are not particularly problematic, but agar is preferred from the viewpoint of feeling in use. This component (a) has a content of 0.
It may be blended in an amount of 1 to 10% by weight (hereinafter, simply abbreviated as "%"), and more preferably in a range of 0.3 to 7%. If the compounding amount of the component (a) is less than 0.1%, the hardness as a solid cosmetic cannot be obtained, and if it exceeds 10%, the composition becomes too hard, impairs the wet feel and elongation. In some cases, problems such as poor uniform cosmetic finish cannot be obtained.

As the component (b), any starch may be used as long as it is commonly used in cosmetics, and examples thereof include corn starch, potato starch, rice starch, tapioca starch and the like. These starches can be used alone or in combination of two or more, and may be blended in the cosmetic of the present invention at 0.01 to 10%, particularly preferably 1 to 5%. If the amount of the starch is less than 0.01%, the effect of adhesion to the skin and adhesion to the inner surface of the container due to the addition of the starch cannot be obtained. The effect is too high and the usability as a cosmetic may be poor.

As the oil agent of the component (c), various types of solid, semi-solid, liquid vegetable oils, animal oils and the like commonly used in cosmetics are used.
Mineral oils and synthetic oils can be used, for example, fats and oils such as olive oil, jojoba oil, mink oil, and mokurou; waxes such as beeswax and candelilla wax; hydrocarbons such as liquid paraffin, microcrystalline wax, and petrolatum Fatty acids such as stearic acid and oleic acid; higher alcohols such as cetanol; esters such as isopropyl myristate; lanolin derivatives such as lanolin fatty acid isopropyl and lanolin alcohol; starch fatty acid esters; methylpolysiloxane and methylphenylpolysiloxane And silicone compounds such as dimethylpolysiloxane polymers having a three-dimensional crosslinked structure; and fluorine-based oils such as perfluoropolyether. These oils can be used alone or in combination of two or more. It is preferable from the viewpoint of feel to mix 1 to 30% in the cosmetic of the present invention.

The water of the component (d) is contained in the cosmetic of the present invention in an amount of 4%.
It is preferable to mix 0 to 95% in terms of feel.

The fumed hydrophobized silica of component (e) is obtained by hydrophobizing fumed silica obtained by hydrolyzing ordinary silicon tetrachloride in hydrogen and an oxygen flame.
Examples of the method of the hydrophobic treatment include a trimethylsiloxylation treatment with trimethylsilyl chloride or hexamethyldisilazane, an octylsilanization treatment, a coating baking treatment using methylhydrogenpolysiloxane, and a coating with a metal soap. The average particle size of the primary particles of the mist-like hydrophobized silica is 50 nm.
Or less, and particularly preferably 20 nm or less.

[0012] Examples of such fumed hydrophobized silica include:
For example, Aerosil R-972, Aerosil R-97
4. Aerosil R202, Aerosil R805, Aerosil R812, Aerosil RY200, Aerosil RX
Commercial products such as 200, Aerosil RA200H (both manufactured by Nippon Aerosil Co., Ltd.), Taranox 500 (manufactured by Talco), and CABOSIL TS-530 (manufactured by Cabot) are exemplified. These may be used alone or in combination of two or more, and may be incorporated in the cosmetic of the present invention in an amount of 0.01 to 2%. The prevention effect and the spread on the skin are better.

In the oil-in-water type solid cosmetic of the present invention, in addition to the above essential components, components usually used in cosmetics can be appropriately compounded within a range not to impair the effects of the present invention. As the powder, for example, talc, kaolin, sericite,
Mica, montmorillonite, bentonite, hectorite, saponite, organically modified clay mineral, calcium carbonate,
Inorganic pigments such as aluminum silicate, magnesium silicate, boron nitride, cerium oxide, zirconium oxide, aluminum magnesium silicate, calcium silicate, silica, etc., titanium oxide, iron-containing titanium oxide, zinc oxide,
Inorganic coloring pigments such as aluminum oxide, red iron oxide, yellow iron oxide, black iron oxide, gunjo, konjo, mica titanium,
Bright pigments such as titanium oxide mica and bismuth oxychloride, organic coloring pigments such as tar pigments and natural pigments, silicone resin powders such as organopolysiloxane cured powder, polymethylsilsesquioxane powder, nylon powder, and poly Organic powders such as methyl methacrylate, polyalkyl acrylate polymer, polystyrene powder, silk powder, polyethylene powder, crystalline cellulose, magnesium stearate, N-acyl lysines, and the like. More than one species can be selected and used. The particle size and shape of these powders are not particularly limited. These powders may be used alone or in combination of two or more.
Fluorine compound, silicone oil, metal soap, wax,
Surface treatment may be performed by a known method using fats and oils, hydrocarbons and the like.

Other components include cellulose derivatives such as methylcellulose, hydroxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose and carboxymethylcellulose; natural polymers such as sodium alginate, carrageenan, quince seed gum, xanthan gum and pectin; polyvinyl alcohol; Carboxyvinyl polymer, alkyl-added carboxyvinyl polymer, sodium polyacrylate, polysodium methacrylate, glycerin polyacrylate,
Water-soluble polymers such as synthetic polymers such as polyvinylpyrrolidone, humectants, preservatives, antioxidants, ultraviolet absorbers, cosmetic ingredients, fragrances, oil gelling agents, film-forming agents, surfactants, clay minerals, low grades Monohydric alcohols, lower polyhydric alcohols and the like can be mentioned.

[0015] Cosmetics that can effectively exhibit the effects of the present invention include, for example, foundations, eyeshadow, hoho red, lipstick, sunscreen, foundation cream, milky lotion, and serum.

[0016]

EXAMPLES The present invention will be further described with reference to the following examples, but the present invention is not limited thereto.

Examples 1 to 6 and Comparative Examples 1 to 3 Oil-in-water type solid foundation A foundation having the composition shown in Table 1 was prepared by the following method, and was found to have freshness, close contact with the skin, lack of shine, and a container dish. The sensory evaluation was carried out on the adhesion with the following evaluation methods and evaluation criteria, and the results are shown in Table 1.

[0018]

[Table 1] Note 1: Aerosil R-972 (Nippon Aerosil Co., Ltd.)

(Production method) A. Heat and dissolve 8-11. B. Heat and dissolve 14-21. B. Add 1 to 7 to A and mix and disperse. C. Add A to B, emulsify, add 12-13 and mix uniformly. D. C was filled into a container dish whose inner surface was not treated at all, and cooled to obtain an oil-in-water type solid foundation.

(Evaluation Method A) The foundations of Examples and Comparative Examples were used as samples, and for each item of freshness, close contact with the skin, and lack of shine, a woman with a makeup history of 10 years or more was evaluated.
A use test was performed using 0 panel members, absolute evaluation was performed according to the following evaluation criteria, and the results were averaged and evaluated according to the following judgment criteria.

(Evaluation Method B) The container dish filled with the foundation was turned upside down, and when it was hit with a hand to apply vibration, the adhesion between the foundation and the dish was evaluated and judged. <Criterion B> The form does not change even when vibration is applied. ○ When vibrated, it comes off the plate. △ Peel off from the dish without applying vibration. ×

As is clear from the results shown in Table 1, the foundations of Examples 1 to 6 of the product of the present invention were superior to the foundations of Comparative Examples 1 to 3, satisfying all items. .

Example 7 Oil-in-water type solid eyeshadow (component) (% by weight) 1. Methyl hydrogen polysiloxane 3% treated titanium oxide 2.0 2. Methyl hydrogen polysiloxane 3% treated mica titanium 10.0 3. Sericite treated with 3% methyl hydrogen polysiloxane 3.0 Color pigment 1.05. 5. Atomized hydrophobized silica (Note 2) 0.5 6. Sorbitan sesquioleate 2.0 Squalane 1.0 8. Candelilla wax 1.09. Appropriate amount of fragrance 10. Methyl paraoxybenzoate 0.1 11.1,1,3-butylene glycol 5.0 12. Agar 0.5 13. Gelatin 1.5 14. Polysodium methacrylate 0.1 15. Corn starch 0.516. Remaining purified water Note 2: Aerosil R974 (Nippon Aerosil)

(Production method) A. Heat and dissolve 6-8. B. Heat and dissolve 11-16. B. Add 1 to 5 to A and mix and disperse. C. Add A to B and emulsify, add 9 to 10 and mix homogeneously. D. C was filled in a container dish and cooled to obtain an oil-in-water solid eye shadow. The eyeshadow of Example 7 has high adhesion to the container dish,
It was an excellent oil-in-water solid eyeshadow with excellent portability, freshness, high adhesion to the skin, excellent persistence of makeup, and less noticeable shine due to sweat and sebum.

Example 8 Oil-in-water solid type hoho red (component) (% by weight) 1. Titanium oxide treated with 3% methyl hydrogen polysiloxane 5.0 2. Methyl hydrogen polysiloxane 3% treated mica titanium 5.0 3. Sericite treated with 3% methyl hydrogen polysiloxane 5.0 4. Talc treated with 3% methyl hydrogen polysiloxane 10.0 Color pigment appropriate amount 6. Atomized hydrophobized silica (Note 3) 0.57. Polyoxyethylene (3) hydrogenated castor oil 1.08. Soy phospholipid 1.0 9. Starch fatty acid ester 0.5 10. Isocetyl stearate 5.5 11. Appropriate amount of fragrance 12. 13. Methyl paraoxybenzoate 0.1 13.1,3-butylene glycol 5.0 Sodium magnesium silicate 5.0 15. Polyvinylpyrrolidone 1.0 16. Corn starch 0.5 17. Remaining purified water Note 3: Taranox 500 (manufactured by Talco)

(Production method) A. Heat and dissolve 7-10. B. Heat and dissolve 13-17. B. Add 1 to 6 to A and mix and disperse. C. Add A to B, emulsify, add 11 to 12, and mix uniformly. D. C was filled in a container dish and cooled to obtain an oil-in-water solid type hoho red. The hoho red of Example 8 has high adhesion to the container plate, is excellent in portability, is fresh, has a high feeling of adhesion to the skin, is excellent in persistence of makeup, and has less noticeable shine due to sweat and sebum. It was an excellent oil-in-water solid hoho red.

[0027]

The oil-in-water type solid cosmetic of the present invention can be stored in a compact container or the like, is excellent in portability, is fresh, has a high refreshing feeling, has good skin familiarity, and the like. It has a good feeling of close contact with the skin and good persistence of makeup, and has high close contact with the container and excellent shape retention. Furthermore, it is an excellent product in which shine due to sweat and sebum is not conspicuous.

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] April 8, 1998

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Claim 1

[Correction method] Change

[Correction contents]

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claim 2

[Correction method] Change

[Correction contents]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

That is, the present invention provides the following components (a) to
(D); (a) relates to an oil-in-water solid cosmetic characterized by containing agar or water-soluble solidifying agent selected from a gelatin (b) starch (c) oil (d) water Further, the present invention relates to the oil-in-water type solid cosmetic containing the fumed hydrophobized silica as the component (e).

Claims (2)

[Claims] (1) The following components (a) to (e): (a) a water-soluble solidifying agent selected from agar or gelatin, (b) starch, (c) an oil agent, and (d) water. Oil-in-water solid cosmetics. 2. The oil-in-water type solid cosmetic according to claim 1, further comprising fumed hydrophobized silica as the component (e).