JP2008174514A - Water-in-oil type emulsified cosmetic - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water-in-oil type emulsified cosmetic excellent in moisture-retaining property and preservation stability. <P>SOLUTION: The water-in-oil type emulsified cosmetic comprises a nonionic surfactant, a volatile silicone, purified water and dipentaerythrityl tri-polyhydroxystearate. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a water-in-oil emulsified cosmetic, and more particularly to a water-in-oil emulsified cosmetic having excellent moisture retention and storage stability.

  A water-in-oil emulsified cosmetic containing volatile silicone as an oil phase component has been used in foundations and sunscreens due to advantages such as good makeup and lightness (for example, see Patent Document 1). . However, since there are many volatile components, it tends to be a dry cosmetic finish, and satisfactory results are not obtained in terms of storage stability.

Japanese Patent No. 2788073

  Accordingly, an object of the present invention is to provide a water-in-oil emulsified cosmetic that is excellent in moisture retention and storage stability.

  The above object is achieved by a water-in-oil emulsified cosmetic containing a nonionic surfactant, volatile silicone, purified water, and dipentaerythrityl tripolyhydroxystearate.

  The water-in-oil emulsified cosmetic of the present invention is particularly excellent in moisture retention and storage stability, but also has advantages such as long-lasting makeup, fit, gloss, and safety.

  The nonionic surfactant used for this invention functions as an emulsifier or a dispersing agent, and can be used 1 type or in combination of 2 or more types. Particularly preferred are fatty acid polyhydric alcohol esters and polyether-modified silicones. As fatty acid polyhydric alcohol esters, sorbitan monoisostearate and diglyceryl monoisostearate are used. As the polyether-modified silicone, BY22-008M (containing 10% polyether-modified silicone, manufactured by Toray Dow Corning), KSG-210 (Contains 25.0% polyether-modified silicone, manufactured by Shin-Etsu Chemical Co., Ltd.) and KF-6028 (manufactured by Shin-Etsu Chemical Co., Ltd.) are most suitable. The blending amount is preferably 0.3 to 3.0% by mass, and particularly preferably 0.5 to 2.0% by mass.

  The volatile silicone used in the present invention can be used regardless of the structure such as cyclic, linear or branched, and one or two or more can be used. The blending amount is preferably 5.0 to 50.0% by mass, and particularly preferably 7.0 to 40.0% by mass.

  The amount of purified water used in the present invention is preferably 15.0 to 85.0 mass%.

Examples of commercially available dipentaerythrityl tripolyhydroxystearate used in the present invention include Saracos WO-6 (manufactured by Nisshin Oillio Group). The blending amount is preferably 0.01 to 10.0% by mass, and particularly preferably 0.1 to 5.
0%.

  In addition to the above essential components, the water-in-oil emulsified cosmetic of the present invention contains an oil component, a moisturizer, an emulsifier, a fragrance, a UV absorber, an antiseptic, a plant extract, a pigment and the like as necessary. I can do it.

  EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is further explained in full detail, this invention is not limited by this.

-Example 1 (skin care cream)
(mass%)
1. Sorbitan monoisostearate 0.5
2. Volatile silicone * 1 20.0
3. Dipentaerythrityl tripolyhydroxystearate 0.5
4). Liquid paraffin 5.0
5. Dipropylene glycol 2.0
6). Sorbitol 3.0
7). Methylparaben 0.2
8). Ethylparaben 0.05
9. Fish-derived water-soluble collagen 0.1
10. Apple extract 0.1
11. Astragalus extract 0.1
12 Purified water 68.15
13. Phenoxyethanol 0.3
* 1; TSF405 (GE Toshiba Silicone)

Production method Ingredients 1 to 4 were dissolved by heating, components 5 to 12 were dissolved by heating, and dispersed. After adding 13 and dispersing, the mixture was cooled to room temperature.

Comparative example 1
A skin care cream was prepared in the same manner as in Example 1 except that liquid lanolin was used instead of dipentaerythrityl tripolyhydroxystearate in Example 1.

Example 2 (makeup base)
(mass%)
1. Polyether-modified silicone mixture * 2 5.0
2. Volatile silicone * 3 7.0
3. Dipentaerythrityl tripolyhydroxystearate 1.0
4). Dipropylene glycol 5.0
5. Sodium citrate 0.3
6). Carrot extract 0.1
7). Sage extract 0.1
8). Royal Jelly Extract 0.1
9. Purified water 71.4
10. Ethanol 10.0
* 2: KSG-210 (contains 25.0% polyether-modified silicone, manufactured by Shin-Etsu Chemical Co., Ltd.)
* 3: SH245 (Toray Dow Corning)

-Manufacturing method Ingredients 1 to 3 were dissolved by heating, and components 4 to 9 were dissolved by heating, and the mixture was dispersed and cooled to room temperature.

Comparative example 2
A makeup base was prepared in the same manner as in Example 2 except that cholesteryl hydroxystearate was used instead of dipentaerythrityl tripolyhydroxystearate in Example 2.

-Example 3 (foundation)
(mass%)
1. Diglyceryl monoisostearate 1.0
2. Polyether-modified silicone mixture * 4 5.0
3. Volatile silicone * 5 20.0
4). Dipentaerythrityl tripolyhydroxystearate 3.0
5. Liquid paraffin 6.0
6). Soy lecithin 0.1
7). Propylene glycol dicaprylate 4.0
8). Glycerin 3.0
9. Maltitol 3.0
10. Sodium dehydroacetate 0.05
11. Olive leaf extract 0.1
12 Silk protein extract 0.1
13. Purified water 41.35
14 Phenoxyethanol 0.3
15. Titanium oxide 10.0
16. Bengala 0.2
17. Yellow iron oxide 0.8
18. Black iron oxide 0.1
19. Talc 0.9
20. Cross-linked silicone powder * 6 1.0
* 4: BY22-008M (containing 10.0% polyether-modified silicone, manufactured by Toray Dow Corning)
* 5: TMF-1.5 (manufactured by Shin-Etsu Chemical Co., Ltd.)
* 6; Trefill E-508 (manufactured by Toray Dow Corning)

Production method Ingredients 15 to 20 were mixed and pulverized, and ingredients 1 to 7 were added to and dissolved in the heated solution. Ingredients 8 to 13 were dissolved by heating and dispersed therein, 14 was added to the dispersion, and the mixture was dispersed and cooled to room temperature.

Comparative example 3
A foundation was prepared in the same manner as in Example 3, except that polyglyceryl-2 triisostearate was used instead of dipentaerythrityl tripolyhydroxystearate in Example 3.

Example 4 (solid wrinkle concealment)
(mass%)
1. Sorbitan monoisostearate 2.0
2. Volatile silicone * 7 40.0
3. Dipentaerythrityl tripolyhydroxystearate 5.0
4). Dimethylpolysiloxane 7.0
5. Liquid paraffin 5.0
6). Ceresin 2.0
7). Rosehip oil 0.1
8). Olive squalane 0.1
9. Polymethylsilsesquioxane * 8 5.0
10. Cross-linked silicone powder * 9 5.0
11. Polyalkyl acrylate * 10 5.0
12 Glycerin 4.0
13. Maltitol 3.0
14 Methylparaben 0.05
15. Sorbic acid 0.05
16. Purified water 16.7
* 7: DC246 (Toray Dow Corning)
* 8; Tospearl 145 (GE Toshiba Silicone)
* 9: Trefill E-506C (Toray Dow Corning)
* 10; Microsphere S-102 (Matsumoto Yushi Seiyaku Co., Ltd.)

-Manufacturing method Ingredients 1-8 were dissolved by heating, and ingredients 9-11 were added and dispersed. To this, components 12 to 16 dissolved by heating were added and dispersed, filled in a container, and cooled to room temperature.

Comparative example 4
A solid wrinkle mask was prepared in the same manner as in Example 4 except that polybutene was used instead of dipentaerythrityl tripolyhydroxystearate in Example 4.

  Test methods of (1) moisture retention test and (2) storage stability test conducted in the present invention are as follows.

(1) Moisturizing test (stratification of stratum corneum moisture content)
In 20 upper arms, the amount of horny water before and 15 minutes after application of the sample was measured using Skicon-200 (IBS) based on the method of Tagami et al. Evaluation was performed.

(2) Storage stability test The cosmetic was stored in a thermostatic bath at 0 ° C, 25 ° C, and 45 ° C for 3 months, and it was examined whether separation of the water phase component and the oil phase component occurred.
No separation when stored at any temperature: ◎
Not separated when stored at 25 ° C or lower, separated when stored at 45 ° C: ○
Separate even when stored at 25 ° C or lower: ×

The result of having performed the said test to each sample of Examples 1-4 and Comparative Examples 1-4 is shown below.
Examples Comparative examples
1 2 3 4 1 2 3 4
――――――――――――――――――――――――――――――――――
Moisturizing test 18 17 19 19 3 1 2 4
Storage stability test ◎ ◎ ◎ ◎ × × × ×

  The samples of Examples 1 to 4 of the present invention were excellent in both moisture retention and storage stability, while Comparative Examples 1 to 4 were inferior.

  The water-in-oil emulsified cosmetic of the present invention is particularly excellent in moisture retention and storage stability, and has advantages such as long-lasting makeup, fit, gloss, and safety. Therefore, it can be applied in the field of pharmaceuticals, quasi-drugs and cosmetics used for skin conditioning and beauty, and is extremely useful in industry.

Claims (1)

A water-in-oil emulsified cosmetic comprising a nonionic surfactant, volatile silicone, purified water and dipentaerythrityl tripolyhydroxystearate.