KR20090114659A - Makeup cosmetic composition of W/O emulsion with inner dispersing pigments - Google Patents

Abstract

PURPOSE: A water-in-oil makeup cosmetic composition in which pigments are dispersed in the water is provided to ensure soft texture. CONSTITUTION: A water-in-oil makeup cosmetic composition has coating pigments which is dispersed in the water. The coating pigment is titaniumdioxide(TiO2), micro TiO2, zincoxide, micro ZnO, ironoxide, alumina, bariumsulfate, silica, talc, kaolin, or sericite. The coating pigment is coated with dimethicone, methicone, caprylyl silane or perfluoride silicon.

Description

Makeup cosmetic composition of W / O emulsion with inner dispersing pigments}

The present invention relates to a water-in-oil makeup cosmetic composition in which the pigment is dispersed in water, which is an inner phase, and more specifically, a silicone-coated pigment is hydrophilized with an O / W emulsifier and then dispersed in water of the inner phase to emulsify the particles. The present invention relates to a water-in-oil type makeup cosmetic composition having a high coverage and soft coverage by being uniformly dispersed.

Water-in-oil makeup cosmetics generally applied in the field of cosmetics are made by dispersing pigment in the oil phase and stabilizing the emulsion formulation using a low hydrophile-liphophile balance (HLB). In this case, the pigments are placed in the oil phase, which is a trauma, and in the case of a product that requires high covering power, the pigment content is high and it is disadvantageous to feel stiff. In addition, the higher the content of these pigments, the lower the dispersion, the uniformity of the coating, and the lower the emulsification stability has the disadvantage of having a high coverage product has been applied mainly to the cream or cake formulation.

However, in recent years, as the trend of favoring light usability is reflected, the demand for a high-coverage but soft and non-stick formulation is required to develop a new technology to satisfy this.

Accordingly, the present inventors have found that water-in-oil emulsions having high coverage and light feeling can be prepared by using a new pigment dispersion method and an emulsifier by escaping from the existing method of adding an emulsifier or dispersant having a poor usability. .

Therefore, an object of the present invention is to provide a water-in-oil makeup cosmetic composition having a high coverage but a light feeling.

In order to achieve the above object, the present invention provides a water-in-oil type makeup cosmetic composition stabilized coating pigment in the inner phase.

The pigment is titanium oxide (TiO ₂ ), micro titanium oxide (Micro TiO ₂ ), zinc oxide (zincoxide, ZnO), micro zinc oxide (Micro ZnO), iron oxide (ironoxide, FeO (II) Fe ₂ O ₃ (III), Fe ₃ O ₄ (IV)), aluminum oxide (alumina, Al ₂ O ₃ ), barium sulfate (bariumsulfate, BaSO ₃ ), silicon dioxide (silica, SiO ₂ ), talc, kaolin, sericite And at least one selected from the group consisting of mica and dimethicone, methicone, caprylyl silane, and a makeup cosmetic composition characterized in that the coating is made of one or more silicones selected from the group consisting of fluorine-based silicones. To provide.

The water-in-oil makeup cosmetics according to the present invention have a higher coverage when the pigment contains the same, while feeling the particle size is small, has a soft feeling, and a low viscosity, stable formulation is possible.

In the present invention, the pigment is dispersed in the aqueous phase, which is an inner phase. Generally, uncoated pigments are used to easily disperse pigments in the water phase, but the present invention uses silicone coated pigments for durability after makeup. As the silicone coating, a silicone coating such as dimethicone, methicone, caprylyl silane, and fluorine-based silicon may be used.

The pigment is titanium oxide (TiO ₂ ), micro titanium oxide (Micro TiO ₂ ), zinc oxide (zincoxide, ZnO), micro zinc oxide (Micro ZnO), iron oxide (ironoxide, FeO (II) Fe ₂ O ₃ (III), Fe ₃ O ₄ (IV)), aluminum oxide (alumina, Al ₂ O ₃ ), barium sulfate (bariumsulfate, BaSO ₃ ), silicon dioxide (silica, SiO ₂ ), talc, kaolin, sericite ) And mica, and include surface treated with silicon.

In this invention, 1-15 weight% of said pigments are contained. When the pigment content is less than 1% by weight, the makeup effect is weak, and when the content is more than 15% by weight, the dispersion of the pigment is difficult to stabilize.

In order to disperse the coated pigment in water, which is an inner phase, a hydrophilic treatment is performed with an O / W emulsifier and then dispersed in the inner phase. More specifically, a surfactant having a high hydrophile-liphophile balance (HLB) is used as an O / W emulsifier, and the coating pigment is mixed with a surfactant and a polyol in advance, followed by roll milling, to thereby obtain an aqueous phase before emulsification. Loosen to disperse. At this time, the HLB-high surfactant has a HLB of 9-15, PEG-30 Hydrogenated Castor Oil, Glyceryl Stearate, PEG-100 Stearate, and Polyethylene Glycol Mono Polyethylene Glycol Monoisostearate, Cetearyl Olivate / Sorbitan Olivate, Hydrogenated Lecithin, Arachidyl Alcohol, and Behenyl Alcohol ) And Arachidyl Glucoside, Cetearyl Alcohol / Cetearyl Glucoside, Polysorbate 80, Polysorbate 60, and the like. The content is preferably 0.1 to 1.5% by weight based on the total weight of the composition. If it is less than 0.1% by weight pigment dispersion is not smooth, if it exceeds 1.5% by weight because the stability of the water-in-oil type formulation itself is not suitable because it is unstable.

In addition, the polyols are not particularly limited as long as they are water-soluble, and the content is preferably 2 to 10% by weight based on the total weight of the composition. If the content is less than 2% by weight, pigment wetting is not smooth. If the content is more than 10% by weight, the emulsion stability is unstable and not suitable.

The pre-mixing and processing methods use roll milling and ball milling as well as common pigment mixing and milling methods such as dumec mixing.

The water-in-oil makeup cosmetic composition of the present invention may be prepared and used according to a purpose as a foundation containing a pigment for correcting skin color, a makeup base cosmetic or a sunscreen cosmetic containing a sunscreen, and the like. Applicable to liquid, cream, cake formulations and the like.

Hereinafter, the present invention will be described in more detail with reference to Examples. These examples are only for illustrating the present invention more specifically, and the scope of the present invention is not limited by these examples in accordance with the gist of the present invention.

Preparation Example Preparation of Foundation

According to the composition shown in Table 1 below, an emulsion of Example 1 (Phase Dispersion Foundation) and Comparative Example 1 (General Foundation) were prepared.

division Raw material name Example 1 Comparative Example 1 Oily ingredients 1.Decamethylcyclopentasiloxane 10.00 10.00 2. Dicaprylylcarbonate 10.00 10.00 3. Squalane 10.00 10.00 Emulsifier 4. Cetyl Fiji / Fifiji-10 / 1 Dimethicone 2.5 2.5 5. Lauryl Fiji-9 Polydimethylsiloxyethyl Dimethicone 1.00 1.00 Organic pigments 6. Polymethylsilsesquioxane (PMSQ) 1.00 1.00 Flow regulator 7. Distarmonium hectorite 0.50 0.50 Sunscreen 8. 2-ethylhexyl methoxycinnamate 3.00 3.00 Preservative 9. Paraoxybenzoic acid ester Quantity Quantity solvent 10. Purified Water Remaining amount Remaining amount Preservative 11.Phenoxyethanol Quantity Quantity Ion Blocker 12. Disodium IDT 0.05 0.05 Emulsifying Stabilizer 13. Sodium Chloride 1.00 1.00 Pigment 14. Dimethicone coated titanium oxide, iron oxide 11.0 11.0 Polyol 15. Butylene Glycol 10.00 10.00 HLB high surfactant 16. Polyethylene Glycol Monoisostearate 0.2 - HLB high surfactant 17.Polysorbate 60 0.8 -

<Production Process-Comparative Example 1>

1) The oily ingredients, emulsifiers, flow regulators, oil-soluble preservatives and sunscreens of 1-9 were mixed.

2) Purified water, ion blocking agent, emulsifying stabilizer and water-soluble preservative which are raw materials of 10-13 were dissolved.

3) 14 pigments were added to the mixed solution of 1) and dispersed in a homogenizer.

4) The solution of 2) was added to the mixed solution of 3) and emulsified with a homogenizer.

<Production Process-Example 1>

1) The oily ingredients, emulsifiers, flow regulators, oil-soluble preservatives and sunscreens of 1-9 were mixed.

2) Purified water, ion blocking agent, emulsifying stabilizer and water-soluble preservative which are raw materials of 10-13 were dissolved.

3) After rolling milling the coating pigments, polyol, and HLB high surfactants, which are raw materials up to 14-17, were added to the mixed solution of 2) and dispersed in an azimixer.

The solution of 2) was added to the mixed solution of 3) and emulsified with a homogenizer.

Test Example 1 Coverage Comparison

Skin B and skin white of people with many skin defects (such as blemishes, freckles, blemishes, acne, etc.) are applied to the skin A of healthy people by using a puff, which is a makeup tool, with the same force and then applied three times. After the film was formed, the brightness of the skin was measured using a spectrophotometer, and the relative hiding power was calculated by Equation 1 below compared with the case of the standard (when not applied). The results are shown in Table 2 below.

Hiding power = ((L _{* A0} -L _{* B0} )-(L _{* A1} -L _{* B1} )) / (L _{* A0} -L _{* B0} )

(L _{* A0} : brightness of skin A before application, L _{* B0} = brightness of skin B before application

L _{* A1} : Brightness of skin A coated with sample, L _{* B1} = Brightness of skin B coated with sample)

Coverage Example 1 20.1 Comparative Example 1 16.6

Looking at Table 2, even in the case of Example 1 according to the present invention it can be seen that even if it contains the same amount of pigment (covering force) is higher than that of Comparative Example 1 of the existing product. This shows that the composition of the present invention enables the development of a higher coverage formulation even with a smaller pigment content.

Test Example 2 Dispersion Comparison

The dispersion state of Example 1 and Comparative Example 1 was confirmed by enlarging 1000 times with an optical microscope, which is shown in FIG. 1. In FIG. 1, black dots represent pigments, and white and pale pink portions represent emulsified particles.

1, it can be seen that the case of Example 1 is more evenly dispersed in the cosmetic composition than Comparative Example 1 which is a conventional makeup cosmetic.

[Test Example 3] Comparison of viscosity, spreadability, emulsification stability

Viscosity was measured by using a rotatable viscometer (rheometer DV III, Brookfield) after leaving the sample (Example 1 and Comparative Example 1) at 30 ° C. for 24 hours. The test was conducted by a panel of experts, and the average value of the evaluated values (five-point scale) was measured.

In addition, the emulsion stability was measured for 4 weeks in a constant temperature condition of 30 ℃, 45 ℃ was observed by comparing the oil separation and emulsion collapse of the sample compared to the storage sample 4 ℃, the results are shown in Table 3 below.

Example 1 Comparative Example 1 Viscosity (cps) 12000 ± 1000 21000 ± 2000 Soft application (sensation) 4.9 4.3 Persistence 4.5 4.6 Oil painting stability Good Good

<Evaluation Criteria of Five-point Scale>

5 points: very much, 4 points: yes, 3 points: normal

2 points: No, 1 point: Not very

<Emulsification Stability Evaluation Criteria>-Compared to 4 ℃ sample

Poor: oil is separated or moisture in the interior soaks out

Medium: The oil is finely divided

Good: no oil separation at all, no difference from the sample at 4 ° C

In the case of Example 1 in which pigments are dispersed in phase from the results of Table 3, the durability and stability are similar to those of Comparative Example 1, which is a conventional product, but in Example 1 according to the present invention, the viscosity is higher than that of Comparative Example 1. It is low and there is a pigment in the inner body, so it can be seen that it does not touch the skin directly and gives softer spreadability.

1 shows that the dispersion state of Example 1 and Comparative Example 1 was confirmed by magnifying 1000 times with an optical microscope.

Claims (7)

A water-in-oil type makeup cosmetic composition in which the coating pigment is dispersed in the water phase which is an inner wound. The method of claim 1, wherein the coating pigment is titanium oxide (titaniumdioxide, TiO ₂ ), micro titanium oxide (Micro TiO ₂ ), zinc oxide (zincoxide, ZnO), micro zinc oxide (Micro ZnO), iron oxide (ironoxide, FeO) (II) Fe ₂ O ₃ (III), Fe ₃ O ₄ (Ⅳ), aluminum oxide (alumina, Al ₂ O ₃ ), barium sulfate (bariumsulfate, BaSO ₃ ), silicon dioxide (silica, SiO ₂ ), talc At least one selected from the group consisting of kaolin, sericite and mica, and coated with at least one silicon selected from the group consisting of dimethicone, methicone, caprylyl silane, and fluorine-based silicone. Makeup cosmetic composition, characterized in that. The makeup cosmetic composition according to claim 1, wherein the coating pigment is contained in an amount of 1 to 15% by weight based on the total content of the composition. The makeup cosmetic composition of claim 1, wherein the coating pigment is mixed with a surfactant and a polyol having a hydrophile-liphophile balance (HLB) of 9 to 15 and mixed and roll milled to emulsify it in an aqueous phase. . The method of claim 4, wherein the surfactant is PEG-30 Hydrogenated Castor Oil, Glyceryl Stearate and PEG-100 Stearate, Polyethylene Glycol Monoisostearate (Polyethylene Glycol) Monoisostearate, Cetearyl Olivate / Sorbitan Olivate, Hydrogenated Lecithin, Arachidyl Alcohol and Behenyl Alcohol and Arachidyl Glucoside (Arachidyl Glucoside), Cetearyl Alcohol / Cetearyl Glucoside, Polysorbate 80 and Polysorbate 60, characterized in that at least one member selected from the group consisting of Makeup cosmetic composition. The makeup cosmetic composition of claim 4, wherein the surfactant is contained in an amount of 0.1 to 1.5% by weight based on the total weight of the composition. The makeup cosmetic composition of claim 4 wherein the polyol is water soluble.

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