JPH05221822A - Cosmetic - Google Patents

Abstract

PURPOSE:To provide a scrubbing agent-containing cosmetic excellent in scrubbing effect and low in irritation to the eye, etc. CONSTITUTION:(A) A spherical powder having 20 to 100mum average particle diameter is blended with (B) a spherical powder having 200 to 500mum average particle diameter in a ratio of [(A):(B)=1:9 to 7:3]. As the spherular powders, a spherular powder of a synthetic polymer is each preferable. Specifically, a polyolefinic polymer such as polyethylene or polypropylene and a vinylic polymer such as polystyrene, polyvinyl chloride, polyacrylonitrile, polyvinyl acetate and polyvinylidene fluoride are exemplified. The mixture ratio of the spherular powder (A) to the spherular powder (B) is within a range of (A):(B)=1:9 to 7:3, preferably within a range of (A):(B)=1:4 to 2:3. If the mixture ratio of (A) to (B) is lower than 1:9 or higher than 7:3, a sufficient scrubbing effect can not be obtained.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention has an average particle size of 20 to 100.
The present invention relates to a cosmetic containing a scrubbing agent, which is a mixture of a spherical powder having a particle diameter of μm and a spherical powder having an average particle diameter of 200 to 500 μm and which has an excellent scrub effect and weak irritation to eyes.

[0002]

2. Description of the Related Art Conventionally, 0.5 to 30% by weight of synthetic polymer powder consisting of rough surface particles having a particle diameter of 0.01 to 0.2 mm is blended, and the scrub effect is achieved by utilizing the fact that the particle surface of the powder is rough. A cosmetic material to be exhibited has been proposed (JP-A-58-192814).

[0003]

However, the rough surface particles are irritating to the eyes during use, which is a problem from the viewpoint of safety. However, in order to improve safety, it is possible to mix synthetic polymer powder consisting of spherical particles in place of rough particles, but when the synthetic polymer spherical particles are mixed in the cosmetic formulation, Even if the irritation to eyes is reduced, there is a problem that the scrubbing effect becomes insufficient. An object of the present invention is to provide a cosmetic containing a scrubbing agent, which is excellent in the scrubbing effect and is less irritating to the eyes and the like.

[0004]

Means for Solving the Problems The inventors of the present invention have conducted extensive studies to achieve the above technical problems, and as a result, have a particle size of 20-
When 100 μm spherical powder and 200 to 500 μm particle diameter spherical powder are blended in a cosmetic formulation at a specific blending ratio, a cosmetic excellent in scrubbing effect and less irritating to eyes is obtained. The facts have been found, and the present invention has been completed based on this new finding.

That is, the present invention has an average particle size of 20 to 1
00 μm spherical powder (A) and average particle size of 200-500
The spherical powder (B) having a diameter of μm and the ratio (A) :( B) are 1 :.
It is a cosmetic composition formulated in the range of 9 to 7: 3.

The structure of the present invention will be described in detail below. As the spherical powder used as the scrubbing agent in the present invention, synthetic polymer spherical powder is suitable. Specifically, olefin polymers such as polyethylene and polypropylene, vinyl polymers such as polystyrene, polyvinyl chloride, polyacrylonitrile, polyvinyl acetate, and polyvinylidene fluoride, polyamide polymers, polyester polymers, and polyurethane. A general-purpose polymer spherical powder material composed of a system polymer and a copolymer thereof, cellulose, silicone and the like can be mentioned.

The spherical powder used as a scrubbing agent in the present invention has an average particle size of 20 to 100 μm, preferably 60.
˜80 μm (A) and average particle size of 200-500
μm, preferably 200 to 400 μm (B), and two types of spherical powders (A) and (B) are mixed at the same time. The mixing ratio of the spherical powders (A) and (B) is (A):
(B) = 1: 9 to 7: 3, preferably 1: 4 to
The range is 2: 3. The mixing ratio of (A) :( B) is 1: 9.
If the amount is less than the above and the compounding ratio of (A) :( B) exceeds 7: 3, the scrubbing effect is not sufficient. Further, the compounding amount of the spherical powder in the present invention is 0.5 to 30% by weight in total of (A) and (B), and preferably 0.
It is 5 to 15% by weight. If less than 0.5% by weight,
When the scrubbing effect is not sufficient and the amount exceeds 30% by weight, the feeling of use becomes poor.

The base to which the spherical powder in the present invention is added is the same as in the case of the well-known cosmetic containing a scrubbing agent,
The form thereof can be arbitrarily selected from cream, gel, solid or powder forms.

In the cosmetic of the present invention, if necessary, various additives commonly used in cosmetics such as surfactants, antioxidants, bactericides, antibacterial agents, moisturizers are added to the base material. , Oils, chelating agents, colorants, cooling agents, fragrances, dyes, etc. are added. It goes without saying that these must be used under qualitative and quantitative conditions that do not impair the effects of the present invention.

[0010]

Next, the operation of the present invention and experimental examples will be described.

[Experimental example] The mixing ratio (A) :( B) of spherical particles (A) with an average particle size of 75 μm and spherical particles (B) with an average particle size of 300 μm was 0: 5,1: 9,
The dynamic friction coefficient at 1: 4,2: 3,3: 2,7: 3,4: 1,5: 0 was obtained.

[0011]

[Table 1]

Note 1) Dynamic Masatsu coefficient measurement method A fixed amount (usually 2 to 3 g) of powder as a sample is measured by a horizontal pulling load measuring device (Nippon Densoku Co., Ltd., serial number M-334).
Spread evenly over (1.5 × 8 cm), cylindrical aluminum rod (diameter
1 cm) is rubbed with a load of 5,10,20,50,70g and each stress is measured. Next, a graph showing the load during measurement on the horizontal axis and the stress on the vertical axis is written, and the slope of the obtained straight line is taken as the dynamic friction coefficient.

As can be seen from the numerical values of the dynamic friction coefficient shown in Table 1, spherical particles (A) having an average particle size of 75 μm and an average particle size of 3
The compounding ratio (A) :( B) of 00 μm spherical particles (B) is 1: 9 to 7: 3.
At that time, the coefficient of kinetic friction exceeds 0.20, and the scrubbing effect is sufficient.

[0014]

EXAMPLES The present invention will now be described in more detail by way of examples, which should not be construed as limiting the invention.
The blending amount is% by weight.

[0015]

[Table 2]

Note 2) Scrub effect This is a rough feeling on the skin. A cosmetic panel containing scrubbing agent is applied to the face by 20 professional panelists in an actual use test, and a rough feeling can be sufficiently obtained. A panel test was conducted for such items. The evaluation method was based on the following criteria.

Evaluation of scrubbing effect ⊚: 16 or more out of 20 professional panelists recognized that there was an effect. ◯: 12 or more out of 20 professional panelists recognized that it was effective. Δ: 6 or more out of 20 professional panelists recognized that there was an effect. ×: Out of 20 professional panelists, 5 or less were found to be effective.

Table 2 shows Examples 1 to 5 and Comparative Examples 1 to 3. The method for producing the cosmetics containing the scrubbing agent in each of the examples and the comparative examples is as follows. Manufacturing method A (oil phase portion) and B (water phase portion) are heated to 70 ° C. to completely dissolve them, and then the oil phase portion is added to the water phase portion while stirring to perform saponification and emulsification. After completing the emulsification, the flavor of C is added to this, and then the powder of D is dispersed. Then, after cooling to a final temperature of 30 ° C using a heat exchanger, it is filled in a container.

As is clear from Table 2, (A) :( B) is 1: 9,
In the case of 1: 4,2: 3,3: 2,7: 3, the scrubbing effect is sufficient. On the other hand, when (A) :( B) is 4: 1, spherical powder (A) and
The scrubbing effect is not sufficient when only one of (B) is used. In other words, compared to the case where only one of spherical powders (A) and (B) is used, the two types of (A) and (B) have a (A) :( B) ratio of 1: 9 to 7: 3. It can be seen that the scrubbing effect is more sufficient when blended.

Example 6 Cleansing foam (weakly acidic) ──────────────────────────────────── AN -Sodium lauroyl-L-glutamate 15 sodium lauryl sulfate 15 glycerin 10 PEG400 15 purified water 33.5 ──────────────────────────────── ───── BP. O. E (40) Monostearate 5 Dimethylpolysiloxane (20cs) 1.0 ──────────────────────────────────── ─ C Fragrance 0 ──────────────────────────────────── D Powder spherical polyethylene resin (average particle size: 65 μm) 2 Spherical cellulose (Average particle size: 300 μm) 3 ─────────────────────────────────────

Preparation method A is completely dissolved at 75 ° C., then B is added and stirred. After thorough mixing, add C and then disperse D. After cooling to a final temperature of 30 ° C with a heat exchanger, filling is performed.

Example 7 Cleansing Foam (Weakly Acidic) ──────────────────────────────────── AN -Sodium lauroyl-L-glutamate 15 sodium lauryl sulfate 15 glycerin 10 PEG400 15 purified water 33.5 ──────────────────────────────── ───── BP. O. E (40) Monostearate 5 Dimethylpolysiloxane (20cs) 1.0 ──────────────────────────────────── ─ C Fragrance 0.5 ──────────────────────────────────── D Powder spherical polyethylene (average particle size: 20 μm ) 2 Spherical cellulose (average particle size: 200 μm) 3 ────────────────────────────────────

Manufacturing method After completely dissolving A at 75 ° C., adding B and stirring. After thorough mixing, add C and then disperse D. After cooling to a final temperature of 30 ° C with a heat exchanger, filling is performed.

Example 8 Cleansing powder ──────────────────────────────────── A Soap powder 50 N- Myristoylmethyl taurine sodium 18.0 Myristic acid 1.0 P.I. O. E (20) Cetyl ether 0.5 Fragrance 0.5 ───────────────────────────────────── B powder spherical silicone resin (Average particle size: 50 μm) 6 Spherical polyethylene resin (Average particle size: 250 μm) 24 ──────────────────────────────── ─────

Manufacturing method A is dissolved in purified water in an amount about half the weight of A while heating at 70 ° C., and then B is dispersed. This is dried by a spray dry process to obtain a powder. After sieving and adjusting the particle size, filling is performed.

Example 9 Cleansing Cream ──────────────────────────────────── A Cetanol 3 Bead Wax 1 Solid paraffin 1 Stearic acid 2 Vaseline 10 Liquid paraffin 15 P.O. E (20) sorbitan stearate 2.4 Diglycerin distearate 2.6 Methylphenyl polysiloxane (polymerization degree 250) 20 Propylparaben 0.3 Perfume 0.3 ────────────────────── ──────────────── B Dipropylene glycol 5 Potassium hydroxide 0.08 Purified water 32.32 ──────────────────────── ────────────── C powder Spherical cross-linked polystyrene resin (Average particle size: 60 μm) 1 Spherical cellulose (Average particle size: 250 μm) 4 ───────────── ────────────────────────

Manufacturing Method A and B are heated to 70 ° C. to dissolve each, and then A is added to B. After emulsifying using an emulsifying machine, C is added and dispersed, and the final temperature is cooled to 30 ° C. by a heat exchanger, and then filling is performed.

The above Examples 6 to 9 are cosmetics having an excellent scrubbing effect (cleansing effect).

Example 10 Massage Cream ──────────────────────────────────── A Cetanol 2.5 Bead Wax 1 Solid paraffin 1 Stearic acid 2 Vaseline 10 Squalene 34 Isopropyl myristate 8 P.I. O. E (20) Sorbitan laurin ester 2 Glycerin monostearate 3 Ethyl paraben 0.3 Perfume 0.2 ────────────────────────────────── ──── B Glycerin 3 Propylene glycol 4 Purified water 23.9 Potassium hydroxide 0.1 ───────────────────────────────── ─── C powder spherical cellulose (average particle size: 90 μm) 2 spherical polyethylene resin (average particle size: 450 μm) 3 ───────────────────────── ─────────────

Manufacturing method A and B were heated at 70 ° C. to dissolve each, and then A
To B. After emulsifying using an emulsifying machine, C is added to disperse and cooled to a final temperature of 30 ° C. by a heat exchanger, and then filling is performed.

The above-mentioned Example 10 is a cosmetic having an excellent scrubbing effect (cleansing effect).

[0032]

EFFECT OF THE INVENTION The cosmetic of the present invention is a cosmetic containing a scrubbing agent which is excellent in the scrubbing effect and is less irritating to the eyes and the like.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomoko Kojima 1050 Shinba-cho, Kohoku-ku, Yokohama-shi, Kanagawa Shiseido Research Institute (72) Inventor Uhei Tamura 1050 Shinba-cho, Kohoku-ku, Yokohama-shi, Kanagawa Shiseido Research Institute (72) Inventor Sadao Yamazaki 7-5-5 Ginza, Chuo-ku, Tokyo Shiseido Co., Ltd. (72) Inventor Hiroyuki Kagoki 1050 Shinba-cho, Kohoku-ku, Yokohama, Kanagawa Stock Company Shiseido Research Institute

Claims (2)

[Claims] 1. A spherical powder (A) having an average particle diameter of 20 to 100 μm and a spherical powder (B) having an average particle diameter of 200 to 500 μm, wherein the ratio (A) :( B) is 1: 9 to 7. : A cosmetic compounded in the range of 3. 2. The cosmetic according to claim 1, wherein the spherical powder is a synthetic polymer spherical powder.