JPH10182340A - Multilayered type cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a multilayered type cosmetic, having a good moist feeling and excellent in feeling of use reduced in stickiness. SOLUTION: This multilayered type cosmetic comprises 0.001-1wt.% polyethylene glycol having 100,000-5,000,000 molecular weight and 0.01-10wt.% powder having a particle shape close to a spherical one and 0.1-50μm average particle diameter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-layer cosmetic, and more particularly to a multi-layer cosmetic which has an excellent moisturizing effect and a moist feeling, keeps the skin moist, and reduces the feeling of use with a non-sticky feeling. The present invention relates to a multilayer cosmetic to be applied.

[0002]

2. Description of the Related Art Conventionally, various humectants have been added to cosmetics in order to prevent and improve bulkiness and rough skin caused by drying. The moisturizer has a function of retaining moisture in the epidermis and stratum corneum constituting the skin, imparting moisturizing properties to the skin, and maintaining flexibility, and glycerin,
Water-soluble polyhydric alcohols such as 3-butylene glycol, propylene glycol, and sorbitol, water-soluble polymers such as polyethylene glycol and hyaluronic acid, sodium pyrrolidonecarboxylate, sodium lactate, aloe extract, and urea are known. In recent years, blending of a higher molecular weight polyethylene glycol has been attempted in order to improve the moisturizing effect.

[0003]

However, high-molecular-weight polyethylene glycol cannot be blended in a large amount because it has a good moisturizing effect, but has a sticky feeling after use. The effect was naturally limited. In order to solve this problem, attempts have been made to use a polymer silicone in combination (Japanese Patent Application Laid-Open No. 5-262618), but the effect is still hardly satisfactory. Therefore, development of a cosmetic having an excellent moisturizing effect and a moist feeling and a good feeling of use has been desired.

[0004]

Means for Solving the Problems In view of the above-mentioned circumstances, the present inventors have conducted intensive studies and as a result, have found that by containing high molecular weight polyethylene glycol and powder of a specific shape, an excellent moist feeling and reduction of stickiness are achieved. And found that the present invention was completed. That is, the present invention provides the following components (A) to (B): (A) polyethylene glycol having a molecular weight of 100,000 to 5,000,000 0.001 to 1% by weight (B) a powder having a spherical or nearly spherical particle diameter 01
It is a multilayer cosmetic characterized by containing 10 to 10% by weight. The details will be described below.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION The polyethylene glycol having a molecular weight of 100,000 to 5,000,000 used as the component (A) in the present invention includes, for example, Polyox (manufactured by Union Carbide), Alcox (manufactured by Meisei Chemical Industry) and the like. Can be used. The blending amount of the polyethylene glycol is
0.001 to 1% by weight (hereinafter simply referred to as “%”), and preferably 0.01 to 0.5%. 0.00
If it is less than 1%, a good moist feeling cannot be obtained, and if it is more than 1%, even if powder having a specific shape described later is compounded, the sticky feeling is remarkable and it is not suitable for use.

[0006] Another essential component (B) used in the present invention is
The component is a powder having a spherical or nearly spherical particle size.
As long as it has this shape, either an organic powder or an inorganic powder can be used. The average particle size of the powder is not particularly limited, but is preferably 0.1 to 50 μm. Among them, preferred powders are one or more selected from silicic anhydride, corn starch, corn starch, and nylon powder. The compounding amount of the powder is 0.01 to 10%, preferably 0.5 to 10%.
5.0%. If it is less than 0.01%, the sticky feeling of the high molecular weight polyethylene glycol described above cannot be reduced, and if it exceeds 10%, good moist feeling can be obtained even if the high molecular weight polyethylene glycol is compounded. Can not get.

Examples of the form of the multilayer cosmetic of the present invention include a two-layer cosmetic comprising a powder layer and an aqueous layer, and a three-layer cosmetic comprising a powder layer, an aqueous layer and an oil-based layer. . More preferably, it is a three-layer cosmetic in which silicone oil is blended as the oil-based layer.

As the silicone oil used in this case, a volatile silicone is preferable. For example, a low molecular weight dimethylpolysiloxane represented by the following general formula (1) or a cyclic silicone represented by the following general formula (2) is used. Certain octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane and the like can be mentioned.

[0009]

Embedded image

[Wherein, m represents an integer of 0 to 3]

[0011]

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[Wherein, n represents an integer of 4 to 6]

The amount of the silicone oil is not particularly limited, but is preferably 1 to 5%. By using within this range, the effects of the present invention become more remarkable.

The multi-layer cosmetic of the present invention contains, in addition to the above essential components, components to be blended with ordinary cosmetics, for example, surfactants, oils, powders, alcohols, ultraviolet absorbers, preservatives, and fragrances. , A cosmetic ingredient, water and the like can be appropriately compounded within a range that does not impair the effects of the present invention.

[0015]

The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.

Examples 1 to 4 and Comparative Examples 1 to 4 Multilayer Cosmetic Multilayer cosmetics having the compositions shown in Tables 1 and 2 were produced and evaluated for moist feeling and non-stickiness.

[0017]

[Table 1]

[0018]

[Table 2]

(Production method) A: Components 3 to 6 are uniformly dissolved. B: Components 7 to 10 and 12 are mixed, and A is added thereto and mixed. C: Components 1-2 and 11 were added to B and mixed to obtain a multilayer cosmetic.

(Evaluation method) Female panel 1 of 18 to 25 years old
A use test was conducted by 0 persons. Shake well when using the above sample and evenly disperse, then apply an appropriate amount,
The following criteria were used to evaluate moistness, non-stickiness and non-greasiness on a 5-point scale. Further, the average was determined. [Evaluation] [Content] 5 points: Very good. 4 points: good. 3 points: Normal. 2 points: Somewhat poor. 1 point: defective. [Judgment] ：: Average score of 4.5 or more. ：: Average score of 3.5 or more and less than 4.5. Δ: Average score of 2.5 or more and less than 3.5. ×: Average point less than 2.5 points. The results obtained by the above evaluation method are also shown in Table 1.

As is clear from the evaluation results, Examples 1 to 4 according to the present invention have excellent moist feeling, reduced sticky feeling and oily feeling, and are excellent in usability. It was. On the other hand, none of the comparative examples satisfied all the items.

Example 5 Three-Layer Cosmetic (Component) (%) Corn starch 0.5 2. Zinc white 1.03. Purified water 5.0 4. Ethanol 15.0 5. 5. polyoxyethylene (50) isostearic acid 0.5 hydrogenated castor oil Appropriate amount of fragrance 7. Preservative appropriate amount 8. Aluminum chloride 0.5 9.1 1,3-butylene glycol 3.0 10. Highly polymerized polyethylene glycol (Note 1) 0.02 11. Purified water balance 12. Sodium citrate 0.5 13. Cyclic dimethylpolysiloxane 2.0 Note 1: Polyox (molecular weight 2,000,000; manufactured by Union Carbide)

(Production method) A: Components 1 to 3 are uniformly dispersed. B: Components 4 to 7 are uniformly dissolved, and this is added to and mixed with components 8 to 11. C: A was added to B, and components 12 to 13 were further added and mixed to obtain a three-layer cosmetic. Example 5 was a three-layer cosmetic having a moist feeling, no stickiness, and a refreshing feeling.

Example 6 Two-Layer Cosmetic (Component) (%) Nylon powder 0.5 2. Purified water 5.0 3. Ethanol 15.0 4. Polyoxyethylene (80) hydrogenated castor oil 0.15. Preservative appropriate amount 6. Appropriate amount of fragrance 7. 7. Highly polymerized polyethylene glycol (Note 1) 0.01 Purified water Remaining Note 1: Alcox (Molecular weight 400,000, manufactured by Meisei Chemical Co., Ltd.)

(Production method) A: Components 1 and 2 are uniformly dispersed. B: Components 3 to 6 are uniformly dissolved, and added to and mixed with components 7 to 8. C: A was added to B and mixed to obtain a two-layer cosmetic. Example 6 was a two-layer cosmetic having a moist feeling and less stickiness.

[0026]

As described in detail above, the multi-layer cosmetic of the present invention has an excellent moist feeling, a reduced stickiness and good sensory characteristics.

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[Procedure amendment]

[Submission date] July 28, 1997

[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] 0003

[Correction method] Change

[Correction contents]

[0003]

[SUMMARY OF THE INVENTION However, high molecular weight polyethylene glycols are those having a good moisturizing effect, contrary, can not be a large amount for a sticky feeling after use remains, resulting in its moisturizing The effect was naturally limited. In order to solve this problem, attempts have been made to use a polymer silicone in combination (Japanese Patent Application Laid-Open No. 5-262618), but the effect is still hardly satisfactory. Therefore, development of a cosmetic having an excellent moisturizing effect and a moist feeling and a good feeling of use has been desired.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction contents]

[0004]

Means for Solving the Problems In view of the above-mentioned circumstances, the present inventors have conducted intensive studies and as a result, have found that by containing high molecular weight polyethylene glycol and powder of a specific shape, an excellent moist feeling and reduction of stickiness are achieved. And found that the present invention was completed. That is, the present invention provides the following components (A) to (B); (A) polyethylene glycol having a molecular weight of 100,000 to 5,000,000 0.001 to 1% by weight (B) a powder having a spherical or nearly spherical particle shape 0
It is a multilayer cosmetic characterized by containing 1 to 10% by weight. The details will be described below.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction contents]

[0006] Another essential component (B) used in the present invention is
The component is a powder having a spherical or nearly spherical particle shape . As long as it has this shape, either an organic powder or an inorganic powder can be used. The average particle size of the powder is not particularly limited, but is preferably 0.1 to 50 μm.
m. Among them, preferred powders include silicic anhydride,
One or two or more selected from corn starch, corn starch, and nylon powder. The compounding amount of the powder is 0.01 to 10%, preferably 0.5 to 10%.
~ 5.0%. If it is less than 0.01%, the sticky feeling of the high molecular weight polyethylene glycol described above cannot be reduced, and if it is more than 10%, good moist feeling can be obtained even if the high molecular weight polyethylene glycol is compounded. Can not get.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction contents]

(Evaluation method) Female panel 1 of 18 to 25 years old
A use test was conducted by 0 persons. Shake well when using the above sample and evenly disperse, then apply an appropriate amount,
The following criteria were used to evaluate moistness, non-stickiness and non-greasiness on a 5-point scale. Further, the average was determined. [Evaluation] [Content] 5 points: Very good 4 points: Good 3 points: Normal 2 points: Somewhat poor 1 point: Poor [Judgment] ◎: Average point of 4.5 points or more 〇: Average point of 3.5 points or more Less than 4.5 points Δ: Average point of 2.5 or more and less than 3.5 points ×: Average point of less than 2.5 points The results obtained by the above evaluation methods are shown in Tables 1 and 2 .

Claims (4)

[Claims] (1) The following components (A) and (B): (A) 0.001 to 1% by weight of polyethylene glycol having a molecular weight of 100,000 to 5,000,000 (B) Powder having a spherical or nearly spherical particle diameter. 01
A multi-layer cosmetic containing from 10 to 10% by weight. 2. The component (B) has an average particle size of 0.1 to 50.
The multilayer cosmetic according to claim 1, wherein the thickness of the multilayer cosmetic is μm. 3. The composition according to claim 1, wherein the component (B) is one or more selected from silicic anhydride, corn starch, corn starch, and nylon powder.
Or the multilayer cosmetic according to any of 2. 4. A multi-layer cosmetic comprising a volatile silicone as the component (C) in addition to the component according to claim 1.