JPH10338616A - Cosmetic material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a liquid cosmetic material excellent in feeling when used and capable of effectively making asperities of skin such as wrinkles and pores hard to see in a natural finish, by using combinably two kinds of spherical particles each having a specific particle size and including an oil component therein. SOLUTION: This objective cosmetic material is obtained by including (A) spherical particles with a mean particle size of 5 to 30 μm, (B) spherical particles with a mean particle size of 0.1 to 1 μm wherein a blended weight ratio of component A/B is 2 to 4 and the total use of components A and B is 10 to 30 wt.%, (C) 5 to 50 wt.% of oil component, and (D) white pigment with a refractive index of >=2, a powder material other than the components A and B, water, water-soluble or oil-soluble polymer, surface active agent, preservative, coloring material, etc., if necessary. Preferably, the component A includes silica, titan oxide, polyamide resin, silicone resin or any composite powder thereof. Preferably, the component B includes silica, titan oxide, poly(methyl methacrylate) resin or any composite powder. The components A and B may be each subjected to a water-repellent or oil-repellent treatment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for producing a natural finish with good adhesion and spread on the skin, wrinkles,
The present invention relates to a cosmetic that can make skin irregularities such as pores and texture less visible.

[0002]

2. Description of the Related Art Hitherto, attempts have been made to utilize the optical properties of extenders as cosmetics for making skin irregularities such as wrinkles, pores, and roughness less visible.
No. 708, JP-A-61-257908, JP-A-4-3
No. 64105, JP-A-3-5412, JP-A-3-18
No. 1411, JP-A-4-364105, JP-A-6-2
79235, JP-A-7-277925, JP-A-7-277
No. 31614, JP-A-8-73316, JP-A-8-73
73317, JP-A-8-267135, JP-A-8-267
217636).

[0003] However, these cosmetics have a low effect of making the skin irregularities of the extender pigment inconspicuous; the extender collects in the wrinkle, makes the wrinkle noticeable, and does not spread to the inside of the large wrinkle. It cannot be concealed; when a foundation is applied thereon, there are problems such as the effect of making the unevenness inconspicuous disappearing and the finish becoming dirty, and none of them was sufficiently satisfactory.

[0004]

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a cosmetic which can effectively make skin unevenness less visible with a natural finish.

[0005]

Under these circumstances, the present inventors have conducted intensive studies and as a result, using a combination of two types of spherical powders having a specific particle size, a liquid cosmetic containing oil has been developed. The book was found to have good adhesion on the skin, good spreadability, excellent usability, and a natural finish, as well as to effectively make skin unevenness such as wrinkles, pores, and roughness less visible. Completed the invention.

That is, according to the present invention, (A) the average particle size is 5
Spherical powder of up to 30 μm, and (B) an average particle size of 0.1 μm
The present invention provides a liquid cosmetic characterized by containing a total of 10 to 30% by weight of spherical powder having a particle size exceeding 1 m and 1 μm or less, and (C) an oil component.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, the average particle diameter means a volume average particle diameter, and a powder having a particle diameter of 1 μm or more is dispersed by a laser diffraction method, and a powder having a particle diameter of 1 μm or less is dispersed by a laser scattering method. It was obtained as a medium. Further, the spherical shape of the spherical powder refers to a range from a true spherical shape to an elliptical shape, and specifically, is given by {(area of a circle corresponding to the maximum particle size in a particle projected image) / (particle projected area)} × 100. Refers to those having a sphericity of 100 to 120.

The spherical powder of the component (A) and the component (B) used in the present invention is not particularly limited as long as it is used for ordinary cosmetics. Any of these may be used, and these spherical powders may be colored by coating and encapsulating a colored pigment, a dye, a dye, a metal ion, or the like by an ordinary method. Examples of such spherical powders include inorganic spherical powders such as silica, alumina, titanium oxide, barium sulfate, aluminum hydroxide, calcium carbonate, magnesium silicate, magnesium carbonate, and aluminum silicate; polyamide resins, polyethylene resins, and polypropylene resins Organic spherical powders such as polymethyl methacrylate resin, cellulosic resin, polystyrene resin, copolymer of styrene and acrylic acid, silicone resin, and further, composite powders thereof, extender pigments and coloring pigments, etc. in the usual manner And the like, which is granulated into a spherical shape.

In addition, these spherical powders have a blurring effect particularly when applied to the skin, thereby providing an excellent effect of making irregularities such as pores and fine wrinkles inconspicuous. Is 2.0 or less, particularly 1.3 to 2.0,
Further, those having a value of 1.4 to 1.8 are preferable.

The spherical powder of the component (A) has an average particle size of 5 to 5.
30 μm, preferably 5 to 15 μm, particularly preferably 5 μm
１２12 μm. If the average particle size is less than 5 μm,
The effect of hiding skin irregularities is reduced, and if it exceeds 30 μm, the feeling of use is reduced.

As the spherical powder of the component (A), silica, titanium oxide, polyamide resin, silicone resin or a composite powder thereof is particularly preferable because a more natural finish can be obtained.

The spherical powder of the component (B) has an average particle diameter of more than 0.1 μm and 1 μm or less, preferably 0.1 μm or less.
More than 0.5 μm, particularly preferably 0.3 to 0.5
μm. When the thickness is 0.1 μm or less, the feeling of use is reduced, and when it exceeds 1 μm, the effect of hiding the unevenness of the skin is reduced.

As the spherical powder of the component (B), silica, titanium oxide, polymethyl methacrylate resin or a composite powder thereof is particularly preferable from the viewpoint of feeling in use.

In the cosmetic of the present invention, one or more of the components (A) and (B) may be used in combination, and the powder of the component (A) and the component (B) may be used in combination. The types may be the same or different. Further, the total amount of the components (A) and (B) is 10 to 30 in the total composition.
%, Preferably 15 to 30% by weight, particularly preferably 25 to 30% by weight. If it is less than 10% by weight, the effect of hiding the unevenness of the skin is reduced, and if it exceeds 30% by weight, the adhesion to the skin is reduced.

The compounding weight ratio of the component (A) to the component (B) is (A) / (B) = 2 to 4, particularly 2 to 3, so that the effect of hiding the unevenness of the skin can be sufficiently obtained. It is preferable for obtaining.

In the present invention, the silicone powder, the fluorine compound treatment, the lecithin treatment, the amino acid treatment, the collagen treatment, the polyethylene treatment, the metal powder and the spherical powder of the component (A) and the component (B) are used in a conventional manner. Water-repellent or oil-repellent treatment such as soap treatment can be used.

Here, the silicone treatment refers to treating the surface of the mother powder with silicone oil, and the silicone oil used is not particularly limited as long as it is used for ordinary cosmetics and the like. For example, silicone oil containing Si-H group such as methyl hydrogen polysiloxane, silicone oil containing Si-OH group, cyclic dimethylpolysiloxane, dimethyl silicone and the like can be mentioned. Specifically, dimethylpolysiloxane, cyclic dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, cyclic methylhydrogenpolysiloxane, dimethylsiloxane / methyl (polyoxyethylene) siloxane copolymer, dimethylsiloxane / methyl (Polyoxypropylene) siloxane copolymer, myristyl silicone, dimethylsiloxane / methyl stearoxysiloxane copolymer, dimethylsiloxane / methylcetyloxysiloxane copolymer,
Methyl polysiloxane emulsion, silicone resin,
Examples include silicone grease, polyether-modified silicone, methylstyryl-modified silicone, alkyl-modified silicone, higher fatty acid ester-modified silicone, higher alkoxy-modified silicone, phenol-modified silicone, and higher fatty acid-modified silicone.

As a method of treating the base powder with these silicone oils, for example, one or two or more of the above silicone oils are dissolved in an appropriate amount of a solvent such as hexane, and the base powder is dispersed in the solvent. After leaving, 2-10 at 100-200 ° C
A method of treating for a time and then drying.

The treatment with a fluorine compound refers to treating the surface of the mother powder with a fluorine compound having a perfluoroalkyl group.
For example, the following general formula (1)

[0020]

## STR1 ## _{[C x F 2x + 1 C} y H 2y O] z PO (OH) 3-z (1)

(Where x is an integer of 4 to 14, y is 1 to 1)
Integer of 2 and z show the integer of 1-3. (US Pat. No. 3,632,744)
), Fluoroalkyldi (oxyethyl) amine phosphate (see JP-A-55-167209), ethylene tetrafluoride resin, perfluoroalcohol, perfluoroepoxy compound, sulfoamide-type fluorophosphoric acid, perfluoroalkylsulfuric acid Salts, perfluoroalkylcarboxylates, perfluoroalkylsilanes (see JP-A-2-218603), perfluoroalkylethylphosphoric acid, and the like.

As a method of treating the base powder with these fluorine compounds, for example, one or two or more of the above-mentioned fluorine compounds are dissolved in a solvent such as isopropyl ether, and the base powder is dispersed in a heated mixture. After mixing at 60 ° C. for 4 hours, the solvent may be distilled off under reduced pressure and dried.

The cosmetic of the present invention further comprises titanium oxide,
A white pigment having a refractive index of 2 or more, such as zinc oxide and zirconium oxide, can be blended. When such a white pigment is blended in an amount of 2% by weight or less, particularly 0.5 to 1% by weight in the whole powder, the shine and luster of the skin hills disappear, wrinkles are hardly seen, and a natural finish is obtained. It is preferred.

Further, the cosmetics of the present invention include, in addition to the powders described above, powders used in ordinary cosmetics, for example, silicic acid,
Silicic anhydride, magnesium silicate, talc, sericite, mica, kaolin, red iron oxide, clay, bentonite, titanium-coated mica, bismuth oxychloride, magnesium oxide, titanium oxide, aluminum oxide, calcium sulfate, barium sulfate, magnesium sulfate, carbonate Inorganic powders such as calcium, magnesium carbonate, iron oxide, ultramarine blue, chromium oxide, chromium hydroxide, calamine and carbon black, and composites thereof; polyamide, polyester, polypropylene, polystyrene, polyurethane, vinyl resin, urea resin, phenol resin Organic powders such as fluorinated resins, silicon resins, acrylic resins, melamine resins, epoxy resins, polycarbonate resins, divinylbenzene / styrene copolymers, silk powders and cellulose composites; , Surfactants, silicones, those surface-treated with a metal soap, lecithin, amino acids, collagen, polymers, fluorine compounds or colored pigments,
Coated and encapsulated with pigments, dyes, metal ions, etc .;
Organic tar-based dyes, organic coloring agents such as lakes and the like can be blended. When these powders are blended, the content is preferably 0.1 to 30% by weight, particularly preferably 10 to 30% by weight in the total composition. Also, among these, when the cosmetics are makeup cosmetics, body cosmetics and the like, inorganic powders such as talc, sericite, kaolin, and titanium oxide are preferable.

The oil component (C) used in the present invention is not particularly limited as long as it is used in ordinary cosmetics. Examples thereof include liquid paraffin, squalane, castor oil, olive oil, jojoba oil, macadamia nut oil, Mink oil, turtle oil, almond oil, safflower oil, avocado oil, stearic acid, oleic acid, lauric acid, myristic acid, glyceryl diisostearate, glyceryl triisostearate, trimethylolpropane-2-
Ethyl isostearate, glyceryl-tri-2-ethylhexanoate, isopropyl myristate, cetyl-2-ethylhexanoate, 2-heptylundecyl palmitate, methylpolysiloxane, methylphenylpolysiloxane, polybutene, diiso Stearyl malate, lanolin, cetanol, stearyl alcohol, oleyl alcohol, lauryl alcohol, solid paraffin wax, ceresin wax, microcrystalline wax, mokurou, beeswax, candelilla wax, carnauba wax, polyethylene wax, polydimethylsiloxane, alkyl-modified silicone Wax, volatile chain silicone oil, volatile cyclic silicone oil, volatile hydrocarbon oil, perfluoropolyether, fluorine-modified silicone, etc. Tsu Motokei oil and the like, and further glycerine, propylene glycol, polyethylene glycol, dipropylene glycol, sorbitol, polyhydric alcohols such as 1,3-butylene glycol,
Oil-soluble plant extracts, phospholipids such as egg yolk lecithin, soy lecithin, sphingolipids, ceramides, ceramide-like structural substances (JP-A-62-228048, etc.), intercellular cells such as cholesterol, cholesteryl ester, cholesteryl isostearate and the like. In addition to lipids, synthetic polymers, fermentation metabolites,
Biological extracts, steroid compounds, proteins, collagen,
A humectant such as chitin is included.

The oil component (C) can be used alone or in combination of two or more, and is preferably incorporated in the entire composition in an amount of 5 to 30% by weight, particularly 10 to 25% by weight, and more preferably 12 to 25% by weight. It is preferable to mix ２２22% by weight, because no glare is caused by the oil component.

In the cosmetic of the present invention, in addition to the above-mentioned components, components used in ordinary cosmetics, such as water, water-soluble and oil-soluble polymers, surfactants, ethanol, preservatives, antioxidants, pigments, Thickeners, pH adjusters, fragrances, ultraviolet absorbers, blood circulation enhancers, cooling sensations, antiperspirants, bactericides, skin activators, etc. may be appropriately blended within a range that does not impair the effects of the present invention. it can.

The cosmetic of the present invention can be produced according to a usual method, and by adjusting each component,
It is liquid. Here, the liquid refers to a liquid having a viscosity at 300C of 300,000 cP or less.

The formulation of the cosmetic of the present invention is not particularly limited as long as it is in liquid form.
It can be in the form of makeup cosmetics such as eye shadow.

[0030]

EFFECT OF THE INVENTION The cosmetic of the present invention has good adhesion on the skin, good spreadability, excellent use feeling, and a natural finish can be obtained, and it has an effect on the unevenness of the skin such as wrinkles, pores and texture. It can be hard to see visually.

[0031]

Next, the present invention will be further described with reference to examples, but the present invention is not limited to these examples.

Example 1 Cosmetics having the composition shown in Table 1 were produced, and the finish when using the same was evaluated. Table 1 shows the results.

(Preparation method) The powder component was mixed using an analytical pulverizer (manufactured by Nippon Rikagaku Kikai), and the oil phase component was mixed with a high-speed stirrer (manufactured by Tokushu Kika Kogyo Co., Ltd.), followed by stirring. The aqueous phase component was dripped little by little below, and the target cosmetic was obtained.

(Evaluation Method) Finish: The finish when the cosmetic was applied to the face was visually evaluated by a specialized panelist according to the following criteria. A: Almost no irregularities such as pores and fine wrinkles are noticeable. ；: Irregularities such as pores and fine wrinkles are slightly conspicuous. Δ: Unevenness such as pores and fine wrinkles is conspicuous. ×: Irregularities such as pores and fine wrinkles are very conspicuous.

[0035]

[Table 1]

Example 2 A cosmetic having the composition shown in Table 2 was produced in the same manner as in Example 1, and the finish was evaluated in the same manner. Table 2 shows the results
Shown in

[0037]

[Table 2]

As is clear from the results in Tables 1 and 2,
All of the products of the present invention were excellent in the effect of making skin irregularities such as pores and fine wrinkles difficult to see. In addition, all of the products of the present invention had good adhesion and spread on the skin, were excellent in use feeling, and obtained a natural finish.

Further, cosmetics were produced in the same manner as in the product 4 of the present invention in Example 2 except that each of the powder components was replaced with the powder treated with the fluorine compound by the above method. The obtained cosmetic was excellent in the effect of making the unevenness of the skin less visible, had a good feeling in use, and obtained a natural finish.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tomohiko Sano 2-1-3 Bunka, Sumida-ku, Tokyo Kao Corporation

Claims (6)

[Claims] 1. A total of 10 to 30% by weight of (A) a spherical powder having an average particle diameter of 5 to 30 μm and (B) a spherical powder having an average particle diameter of more than 0.1 μm and 1 μm or less; C) A liquid cosmetic comprising an oil component. 2. The cosmetic according to claim 1, wherein the weight ratio of component (A) to component (B) is (A) / (B) = 2-4. 3. The cosmetic according to claim 1, which contains 5 to 30% by weight of an oil component (C). 4. The spherical powder of the component (A) is silica, titanium oxide, a polyamide resin, a silicone resin or a composite powder thereof, and the spherical powder of the component (B) is silica, titanium oxide, poly The cosmetic according to any one of claims 1 to 3, which is a methyl methacrylate resin or a composite powder thereof. 5. The cosmetic according to claim 1, wherein a white pigment having a refractive index of 2 or more is contained in the whole powder in an amount of 2% by weight or less. 6. The cosmetic according to claim 1, wherein the spherical powder of the component (A) and the component (B) has been subjected to a water-repellent or oil-repellent treatment.