JPH06271419A - Powder-containing cosmetic - Google Patents

Abstract

PURPOSE:To give a cosmetic containing powder particles which have good redispersibility, reduced skin irritation, good application feeling because it gives skin dry and smooth touch. CONSTITUTION:The objective cosmetic is prepared by adding an organic powder of 1 to 80mum particle sizes and 10 to 45wt.% of ethanol based on the total cosmetic weight.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder-containing cosmetic, and more particularly to a cosmetic containing an organic powder and having a low alcohol content.

[0002]

2. Description of the Related Art The technology of blending powder into cosmetics is to absorb dirt, excess lipid, perspiration and other components on the powder to clean the skin, and by its absorption action, sebum resistance, It has been widely used from the past for the purpose of improving sweat resistance and improving makeup lasting, improving massage effect to promote blood circulation in the skin, and activating metabolism.

For example, a skin cleansing composition of JP-B-49-6167, a cosmetic massage detergent for the face and neck of JP-A-51-44649, a cosmetic of JP-B-60-42203, The granule-containing external preparation for skin, etc. of No. 60-152407 is one in which an organic powder or an inorganic powder is mixed with a cosmetic material in order to enhance the skin cleaning effect and the massage effect.

Further, the cosmetics of JP-A-60-184004 and the cosmetics of JP-B-4-51522 which have a good makeup lasting try to improve the makeup lasting by blending an organic powder. This is an example of an attempt.

By the way, the powder-containing cosmetic as described above is used in combination with alcohol to add a cleaning effect, a disinfecting effect, a refreshing feeling, and the like, so that when shaving with an electric razor, the skin surface Pre-shave lotion for the purpose of improving the feel and shaving effect, after-shave lotion for the purpose of disinfecting and converging the skin after shaving, lotion suitable for oily people and summer, and suppressing makeup loss before makeup. It is also used as a lotion and the like.

As an example of such cosmetics, Japanese Patent Laid-Open No.
No. 289508 has a particle size of 1 to 50 μm and a true specific gravity of 1.
A preshave cosmetic composition containing 0.1 to 10% by weight of spherical organic powder of 5 or less and 50% by weight or more of a volatile carrier such as alcohol is disclosed. However, such a high alcohol content organic powder-containing cosmetic material has a problem that it is strongly irritating to the skin and is limited to use as a male cosmetic material.

There is also a lotion containing calamine (zinc oxide containing about 0.5% ferric oxide) as a cosmetic having a low alcohol content (about 10 to 15%) using inorganic powder. This is a summer lotion that has a drying, cooling and protective effect, which has been used more often than before, but it lacks a smooth feel and smoothness, and when the alcohol content is increased a little, the powder agglomerates and caking is performed. There is a problem that it cannot be used after being woken up.

[0008] Therefore, by containing an organic powder, a cosmetic having a low alcohol content, which is excellent in dryness and smoothness and has less irritation, is desired. Caking tends to occur when the content is lowered, and thus there has been no known example of containing an organic powder in a cosmetic having a low alcohol content.

[0009]

SUMMARY OF THE INVENTION The present invention has been made from the above point of view, and has good redispersibility, less irritation to the skin, excellent usability, and a smooth and smooth feel. An object of the present invention is to provide a cosmetic containing powder that can be used.

[0010]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have found that an organic powder having a specific particle size and true specific gravity is contained in a cosmetic along with a specific amount of alcohol. By doing so, they have found that the intended purpose can be achieved, and have completed the present invention.

That is, the present invention is characterized by containing an organic powder having a particle size of 1 to 80 μm and a true specific gravity of 1.3 or less, and 10 to 45% by weight or less of alcohol with respect to the total amount of cosmetics. It is a cosmetic that does.

The present invention will be described in detail below. As the organic powder used in the present invention, nylon, polyurethane, silicone resin, or ethylene, propylene, styrene, vinyl acetate, vinyl chloride, acrylonitrile, methacrylonitrile, ethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, acrylic acid, Organic powders made of materials having a true specific gravity of 1.3 or less, such as polymers or copolymers made of monomers such as acrylic acid ester, methacrylic acid, and methacrylic acid ester, may be used alone or in combination of two or more. May be. When an organic powder having a true specific gravity of more than 1.3 is used, the organic powder is precipitated, which is not preferable.

The particle size of the organic powder is 1 to 80 μm.
The range is m. If the particle size is less than 1 μm, a squeaky sensation occurs and the spread to the skin becomes poor, and if the particle size exceeds 80 μm, there is a feeling of use (roughness) and irritation to the skin is unpreferable.

By adding two or more kinds of powders having different particle diameters to the organic powder and mixing the powder with a cosmetic,
Furthermore, a preferable cosmetic is obtained. The amount of the organic powder compounded in the cosmetic of the present invention is usually 1 to 10% by weight. If the blending amount is less than 1% by weight, the feel peculiar to the organic powder cannot be obtained. If it exceeds 10% by weight, the influence of the organic powder (stability, feeling in use, etc.) becomes too strong, which is not preferable.

The alcohols used in the present invention include monohydric alcohols such as ethanol, propanol and benzyl alcohol; 1,3-butylene glycol, propylene glycol, dipropylene glycol, glycerin, polyethylene glycol, sorbitol and the like. Polyhydric alcohols may be mentioned, but ethanol is particularly preferable.

The content of the above alcohol is in the range of 10 to 45% by weight. If the content is less than 10% by weight, it is not familiar to the skin and the refreshing feeling is inferior, and if it exceeds 45% by weight, it gives a tingling sensation rather than the refreshing feeling and the irritation to the skin is too strong. Become.

The term "cosmetics" as used in the present invention means cosmetics used for the purpose of cleaning, activating, conditioning and protecting the skin of the face, hands, neck, scalp and other parts of the body. There is no particular limitation, and examples include face wash, cleansing agent, lotion, lotion, essence, pack, massage agent, sunscreen cosmetic, nutrition cream, hand cream, lip balm, scalp cream, foundation, etc. Examples of the base makeup cosmetics include, but lotions, particularly lotions for summer and lotions for preshave and aftershave are preferable.

In the cosmetic of the present invention, in addition to the above-mentioned organic powder, oils, surfactants, polymer compounds, water, and other components which are usually blended in cosmetics are used for the purpose, dosage form, purpose and the like. It can be appropriately blended.

As the above oil, liquid paraffin,
Liquid oils such as squalane, cetyl 2-ethylhexanoate, isopropyl myristate, olive oil, castor oil; semisolid to solid fats such as petrolatum, solid paraffin, beef tallow, lanolin, beeswax, whale wax, cholesterol; cetanol,
Examples include higher alcohols such as behenyl alcohol; higher fatty acids such as palmitic acid and stearic acid; fluorine-based oil agents such as perfluoropolyether; silicone derivatives and the like.

As the above-mentioned surfactant, sorbitan fatty acid ester, glycerin fatty acid ester, polyoxyethylene (hereinafter abbreviated as "POE") sorbitan fatty acid ester, POE glycerin fatty acid ester, POE alkyl ether, POE polyoxypropylene alkyl ether, POE
Nonionic surfactants such as polyoxypropylene copolymer, POE alkyl phenyl ether, POE hydrogenated castor oil, polyethylene glycol fatty acid ester, decaglycerin fatty acid ester, alkyldiethanolamide;
Alkyl sulfate, POE alkyl ether sulfate, POE alkyl ether acetate, alkyl phosphate, POE alkyl ether phosphate, higher fatty acid salt, higher fatty acid hydrolyzed collagen salt, amino acid-based anionic surfactant; sulfosuccinic acid-based Surfactants, anionic surfactants such as olefin sulfonates; amphoteric surfactants such as lecithin, betaine acetate, imidazolinium betaine, etc .; alkyl trimethyl ammonium chloride, dialkyl dimethyl ammonium chloride, alkyl dimethyl benzyl ammonium chloride And the like.

As the polymer compound, polyvinylpyrrolidone, polyvinyl alcohol, vinylpyrrolidone-vinyl acetate copolymer, acrylic resin alkanolamine, N-
Methacryloylethyl N, N-dimethylammonium α-N-
Methyl carboxy betaine / methacrylic acid alkyl ester copolymer, diethyl vinylpyrrolidone sulfate-N, N'-dimethylaminoethyl methacrylic acid copolymer, hydroxyethyl cellulose dimethyl diallyl ammonium chloride, hydroxyethyl cellulose hydroxypropyl trimethyl ammonium chloride ether, carboxy vinyl polymer , Carboxymethyl cellulose salt, xanthan gum, hydroxyethyl cellulose and the like.

As the powder, metal powder pigments such as talc, mica, titanium dioxide, sericite, carion, pearl pigment, aluminum powder and copper powder,
Iron oxide (red iron oxide), yellow iron oxide, black iron oxide, carbon black, mango violet, cobalt violet,
Chromium oxide, chromium hydroxide, ultramarine, zinc white, bentonite, aluminum silicate, calcium silicate, calcium carbonate, silica, nylon powder, polyester powder, polyethylene powder, polystyrene powder,
Cellulose powder, red 201, red 202, red 205
Red, Red No. 220, Red No. 226, Red No. 405, Orange No. 203, Yellow No. 205, Yellow No. 401, Blue No. 404, and other organic pigments, Red No. 3
No. 104, Red No. 104, Red No. 227, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 202, Yellow No. 203, Green No. 3, and Blue No. 1 of zirconium, barium or aluminum lake, etc. Examples include organic pigments.

Further, as the above-mentioned other components, humectants such as amino acids and hyaluronic acid; ultraviolet absorbers such as oxybenzone and para-aminobenzoic acid ester; antioxidants such as tocopherol and dibutylhydroxytoluene; paraben, phenoxyethanol and the like. Antiseptic; bactericides such as isopropylmethylphenol and trichlorocarban; hydrolysates of proteins such as collagen, keratin and silk (for example, hydrolyzed collagen: Promois W42R manufactured by Seiwa Chemical Industry Co., Ltd.); citric acid, citric acid PH adjusting agents such as sodium, anti-dandruff agents such as zinc pyrithione and piroctone olamine, plant extract, anti-inflammatory agents such as dipotassium glycyrrhizinate; propellants such as dimethyl ether and LPG; Na
Inorganic salts such as Cl; pearling agents such as triethylene glycol distearate, astringents such as hamamelis water, inorganic powders such as titanium oxide, whitening agents such as sulfur and magnesium ascorbyl phosphate, chelating agents, various vitamins Blood circulation promoters such as capsicum tincture, pigments, and fragrances.

Further, in these cosmetics, in order to improve redispersibility of the above-mentioned organic powder, a stainless ball, for example, 5
It is preferable to use a 10 mm diameter one and shake and crush it.

[0025]

The effects of the alcohol content of the cosmetic of the present invention and the particle size of the organic powder contained in the cosmetic were evaluated by a sensory test and a redispersion test.

<Feeling in Use> (1) Alcohol Content The effect of the amount of alcohol contained in the cosmetic of the present invention on the feeling in use was examined.

Spherical acrylic beads (using a copolymer obtained by emulsion-polymerizing methyl methacrylate and ethylene glycol dimethacrylate in a ratio of 7: 3 with an average particle diameter of 45 μm) of 5% by weight based on the total amount of the sample and a table As shown in 5, a sensory evaluation was performed on each of the ethanol contents of a test after-shave lotion consisting of ethanol having various contents and the balance of purified water.

The evaluation method was as follows. The test aftershave lotion was applied to 10 panelists at 0.015 ml / c.
It is applied directly to the skin at a rate of m ² and sensory evaluated, and the points of evaluation are the coolness, the presence or absence of irritation to the skin, the familiarity with the skin, the goodness of pulling, etc. I got it evaluated. The results are shown in Table 1.

[0029]

[Table 1]

(2) Particle Size of Organic Powder The effect of the particle size of the organic powder used in the cosmetic of the present invention on the feeling of use was examined. Using 5 kinds of organic powders having different particle diameters, 5 kinds of test pre-shave lotions made up of 5% by weight of organic powder, 40% by weight of ethanol, and 55% by weight of purified water with respect to the total amount of the sample were prepared. Sensory evaluation was performed.

The evaluation method was as follows: 10 panelists were provided with the above test pre-shave lotion at 0.015 ml / cm ^2.
It is applied directly to the skin in a ratio of s, and a beard is shaved with an electric razor for sensory evaluation.The point of evaluation is shaving ease, slipperiness, dryness, etc. It was The results are shown in Table 2.

[0032]

[Table 2]

<Redispersibility> The redispersibility of the organic powder used in the present invention in cosmetics was tested. Samples were prepared such that the organic powder was 5% by weight based on the total amount of the purified water-ethanol mixed solution having ethanol content of 10% by weight, 40% by weight and 70% by weight based on the total amount of the sample. It shall be added. The sample is uniformly dispersed and sealed in a test tube with a stopper, left in a constant temperature layer at 40 ° C. for 1 month, and then taken out and subjected to a redispersibility test according to the following criteria. The results are shown in Table 3.
Shown in.

⊚: Immediate dispersion (white turbidity) ○: Shake to disperse 5 to 10 times Δ: Shake to disperse 11 to 20 times ×: Disperse or shake for 21 times or more (cannot be dispersed)

[0035]

[Table 3]

Next, as shown in Table 4, a redispersibility test was conducted in the same manner as above using samples containing two kinds of organic powders having different particle sizes. In the test, a sample consisting of 5% by weight of organic powder, 40% by weight of ethanol and 55% by weight of purified water with respect to the total amount of the sample was prepared, although the mixing ratios of the two organic powders were different. Using. The results are shown in Table 4.

[0037]

[Table 4] As described above, the cosmetic of the present invention has the effects of good redispersibility, less irritation to the skin, and excellent feeling of use due to the action of alcohol and organic powder.

[0038]

EXAMPLES Examples of the present invention will be described below. In addition,
All compounding amounts (%) used below are weight%. As the organic powder, methacrylic acid ester resin powder is Chuku beads (average particle size 45 μm, specific gravity 1.19) manufactured by Matsumoto Yushi-Seiyaku Co., Ltd., and spherical polymethylmethacrylate powder is Nihon Pure Chemical Co., Ltd. ) Made of Julimer MB-1
(Average particle size 7 μm, specific gravity 1.2) and nylon powder used was Toray Nylon SP-500 (average particle size 7 μm, specific gravity 1.01) manufactured by Toray Industries, Inc., respectively.

[0039]

Example 1 Pre-shave & after-shave lotion The components shown in Table 5 were mixed and stirred with a stirrer to disperse them uniformly to produce a pre-shave & after-shave lotion. Similarly, a comparative preshave and aftershave lotion having a high alcohol concentration were produced.

[0040]

[Table 5]

<Evaluation> The pre-shave and after-shave lotion of Example 1 and Comparative Example 1 obtained above were subjected to an actual use test by 37 male panelists. The results are shown in Table 6.

[0042]

[Table 6] In addition, at the same time the preshave lotion on the panel,
After shave lotion I got a comprehensive comparative evaluation from both sides. The results are shown below.

Example 1 is better: 70.3% (26 people) Same level: 21.6% (8 people) Comparative example 1 is better: 8.1% (3 people)

[0044]

[Example 2] Sun-cam lotion (summer powder-containing cosmetic) The components shown in Table 7 were mixed and stirred with a stirrer to disperse them uniformly to produce sun-cam lotion.

[0045]

[Table 7]

[0046]

Example 3 Skin Cream (For Men) Components A and B in Table 8 are each heated at 75 ° C. to dissolve and disperse. Next, the B component is added to the A component and the emulsion is inverted. This was cooled, C component was added at 45 ° C., cooling at 30 to 35 ° C. was stopped, and skin cream (for men) was obtained.

[0047]

[Table 8]

[0048]

Example 4 Liquid Foundation (Liquid) The component A in Table 9 was heated and dissolved, and the separately heated component B was gradually added to the mixture to emulsify it, and then the component C pulverized and mixed in a ball mill was added thereto, and D was further added. The components were added to produce a liquid foundation.

[0049]

[Table 9]

[0050]

EFFECT OF THE INVENTION The cosmetic composition of the present invention has good redispersibility, little irritation to the skin, an excellent feeling in use, and a smooth and smooth feel.

Claims (2)

[Claims] 1. A particle size of 1 to 80 μm and a true specific gravity of 1.3.
10 to 4 with respect to the following organic powder and cosmetics
A cosmetic comprising 5% by weight of alcohol. 2. The cosmetic according to claim 1, wherein the organic powder contains two or more kinds of powders having different particle sizes.