MAKEUP BASE COSMETIC COMPOSITION FOR SKIN

Abstract

A makeup base cosmetic composition for skin according to the present subject matter including biocellulose microfibrils, such that color cosmetics applied on the skin can be easily cleansed due to a dense network of a three-dimensional network structure formed by the microfibrils.

Claims

1. A method of applying cosmetics to a skin for improving removal efficiency of the cosmetics at cleansing, comprising: applying a makeup base cosmetic composition containing biocellulose microfibrils to the skin, and then applying a color cosmetic to the skin where the makeup base cosmetic is applied.

2. The method of claim 1, wherein a hydroxyl group of the biocellulose is substituted with a carboxyl group, and the biocellulose microfibrils are dispersed in an aqueous phase of the composition while forming a three-dimensional network structure.

3. The method of claim 1, wherein the biocellulose microfibrils have a number-average diameter of 30 to 60 nm and a maximum diameter of 60 to 100 nm.

4. The method of claim 1, wherein the biocellulose microfibrils are included in an amount of 0.001 to 10 parts by weight based on the total weight of the composition.

5. The method of claim 1, wherein the base cosmetic composition further comprises: a film-forming polymer, or a component having a glass transition temperature equal to or higher than a lukewarm water temperature, or a component having a phase transition temperature equal to or higher than a lukewarm water temperature.

6. The method of claim 5, wherein the film-forming polymer includes one or more selected from the group consisting of a polyvinyl alcohol-based polymer, a polyurethane-based polymer, a polyacrylic-based polymer, a polyvinyl acetate-based polymer, a polyvinylpyrrolidone-based polymer, and a copolymer thereof.

7. The method of claim 5, wherein: the component having a glass transition temperature equal to or higher than a lukewarm water temperature is one or more temperature sensitive polymers selected from the group consisting of methylcellulose, hydroxyl propyl methyl cellulose, hydroxyl propyl cellulose, Pluronic, poly(N-isopropylacrylamide) (PNIPAAm), poloxamers, a polyethylene oxide (PEO)-polypropylene oxide (PPO)-polyethylene oxide (PEO) copolymer, a polyethylene glycol (PEG)-polylactic acid/glycolic acid copolymer (PLGA)-polyethylene glycol (PEG) copolymer, and a methoxypolyethylene glycol-polycaprolactone (mPEG-PCL) block copolymer; and the component having the phase transition temperature equal to or higher than a lukewarm water temperature is one or more film-forming waxes selected from the group consisting of polyethylene wax, ozokerite wax, candelilla wax, carnauba wax, ceresin wax, beeswax, and paraffin wax.

8. The method of claim 1, wherein the base cosmetic composition has an oil-in-water emulsion formulation.

9. The method of claim 1, wherein the base cosmetic composition forms a physical film when applied to the skin.

10. A method of improving the removal efficiency of a color cosmetic from a skin at cleansing, comprising applying a makeup base cosmetic composition containing biocellulose microfibrils to the skin before applying the color cosmetic, and cleansing the cosmetics.

11. The method of claim 10, wherein a physical film formed on the skin by application of the base cosmetic composition is desorbed at cleansing, and thereby the removal efficiency of the color cosmetic is improved.

Description

DESCRIPTION OF DRAWINGS

[0053] FIG. 1 illustrates a result of confirming the effect of expressing makeup according to whether or not a cellulose dispersion is applied according to one embodiment.

[0054] FIG. 2 illustrates a result of confirming the effect of cleansing power according to whether or not a cellulose dispersion is applied according to one embodiment.

[0055] FIG. 3 illustrates a result of confirming cleansing power of makeup of a makeup base cosmetic composition according to one embodiment.

[0056] FIG. 4 illustrates a result of confirming cleansing power of makeup of a makeup base cosmetic composition including a film-forming polymer according to one embodiment.

MODES OF THE INVENTION

[0057] Hereinafter, the present invention will be described in detail by the following examples. However, the following examples are merely illustrative of the present invention, and the present invention are not limited to the following examples.

Manufacturing Example. Preparation of Cellulose Dispersion

[0058] A cellulose microfibril dispersion was prepared in the same manner as in a previous study, Korean Patent Publication No. 10-2017-0103698. The dispersion prepared as described above was prepared by dispersing in purified water. The dispersion was used in an amount of 1.5 parts by weight (dry) based on 100 parts by weight of purified water.

Experimental Example 1. Effect of the Expressive Power of Makeup According to Application of Cellulose Dispersion

[0059] To test the expressive power of makeup according to whether or not cellulose dispersion is applied, the dispersion of Manufacturing Example was applied to the same area on the skin at a concentration of 2 mg/2 cm.sup.2 and dried, and then a water-in-oil type foundation was applied at the same concentration (2 mg/2 cm.sup.2) on the same area on the skin.

[0060] As a result, as shown in FIG. 1, even when the dispersion is applied and the foundation is applied thereon, It can be seen that color cosmetics are expressed without a sense of discomfort such as cracking, lifting, or clumping as when applied directly to the skin.

Experimental Example 2. Confirmation of Cleansing Power According to Application of Cellulose Dispersion

[0061] To confirm the cleansing power effect according to the application of the cellulose dispersion, the dispersion of Manufacturing Example was applied to the same area on the skin at a concentration of 2 mg/2 cm.sup.2, dried, and then an oil-dispersed lip cosmetic was applied at the same concentration (2 mg/2 cm.sup.2) thereon. After applying the cosmetic, it was sufficiently dried and then cleansed using the same pressure with 30° C. water. The cleansing results are shown in FIG. 2.

[0062] As a result, when the cellulose dispersion was applied, a cellulose micro-fibrous film was formed, and thus the cleansing power was remarkably increased.

Examples 1 to 3. Preparation of Oil-in-Water Emulsified Base Cosmetic Composition

[0063] To confirm the cleansing power according to the concentration of the cellulose dispersion, a base cosmetic composition of an oil-in-water (O/W) emulsion formulation containing a cellulose dispersion was prepared according to the composition and content of Table 1 below. In this case, Examples 1 to 3 respectively refer to compositions including 10 parts by weight, 20 parts by weight, and 30 parts by weight of a raw material containing biocellulose microfibrils in an amount of 1.5 dry parts by weight based on 100 parts by weight of purified water.

TABLE-US-00001 TABLE 1 Ingredient name Compar- (content: parts Exam- Exam- Exam- ative by weight) ple 1 ple 2 ple 3 Example 1 Purified water Up to 100 Up to 100 Up to 100 Up to 100 Trisodium EDTA 0.02 0.02 0.02 0.02 Carbomer 0.2 0.2 0.2 0.2 Acrylate/C10-C30 alkyl 0.05 0.05 0.05 0.05 acrylate cross-polymer Dipropylene glycol 5 5 5 5 1,2-hexanediol 1.5 1.5 1.5 1.5 Biocellulose microfibril 0.15 0.3 0.45 — Glycerin 5 5 5 5 Dimethicone 4 4 4 4 Cyclopentasiloxane 1 1 1 1 PEG-60 Hydrogenated 0.4 0.4 0.4 0.4 Castor Oil Tromethamine 0.25 0.25 0.25 0.25 Total 100 100 100 100

Experimental Example 3. Confirmation of Cleansing Power of Base Composition

[0064] To confirm the makeup cleansing power according to the application of the compositions of Examples 1 to 3, an experiment was performed in the following manner.

[0065] First, each of the compositions of Examples 1 to 3 was applied on a slide glass to a constant thickness. After drying for one day at room temperature for complete drying, a water-in-oil-type foundation was applied thereon to a constant thickness. After application, it was dried at room temperature for 4 hours and then immersed in 30° C. distilled water while stirring to check the cleansing effect. The composition of Comparative Example 1 was also tested in the same manner. The results of cleansing are shown in FIG. 3.

[0066] As shown in FIG. 3, when the composition of Comparative Example 1 containing no biocellulose microfibrils was applied, the foundation was hardly removed, whereas when the compositions of Examples 1 to 3 were used, the foundation was washed away. Particularly, when the biocellulose microfibrils' content in the formulation increased, a larger amount of the foundation was washed away. As a result, it was confirmed that when the content of the cellulose microfibrils increased, the cleansing power was also increased.

Example 4. Preparation of Oil-in-Water Emulsion Base Cosmetic Composition Containing Film-Forming Polymer

[0067] To confirm the cleansing power according to biocellulose microfibrils in the presence of a film-forming agent which is generally known to aid cleansing, a base composition of an oil-in-water emulsion formulation containing a film-forming polymer and cellulose microfibrils was prepared according to the composition and contents shown in Table 2 below. In this case, polyvinyl alcohol was used as the film-forming polymer.

TABLE-US-00002 TABLE 2 Ingredients Comparative Exam- (content: parts by weight) Example 2 ple 4 Dipropylene glycol 5.00 5.00 Butylene Glycol 3.00 3.00 Triethylhexanoin 1.50 1.50 Dimethicone 0.90 0.90 Sucrose polytearate 0.41 0.41 Hydrogenated Polyisobutene 0.09 0.09 Polysorbate 60 0.70 0.70 Purified water Up to 100 Up to 100 Polyvinyl alcohol 0.30 0.30 Acrylate/C10-30 alkyl acrylate cross-polymer 0.12 0.12 Carbomer 0.14 0.14 Glycerin 7.00 7.00 1,2-hexanediol 1.30 1.30 Trisodium EDTA 0.03 0.03 Biocellulose microfibril 0.00 0.45 Tromethamine 0.22 0.22 Silica 0.70 0.70 Total 100 100

Experimental Example 4. Confirmation of Cleansing Power of Base Composition Containing Film-Forming Polymer

[0068] To confirm whether the cleansing effect can be increased when the composition according to the present invention is used together with a film-forming polymer, which is well known to aid cleansing, an experiment was conducted in the following manner.

[0069] The composition of Example 2 was applied on a slide glass to a constant thickness. After drying for one day at room temperature for complete drying, a water-in-oil-type foundation was applied thereon to a constant thickness. After application, it was dried at room temperature for 4 hours and then immersed in 30° C. distilled water while stirring to check the cleansing effect. The composition of Comparative Example 2 was also tested in the same manner. The results of cleansing are shown in FIG. 4.

[0070] From the results of Example 4 of FIG. 4, it was confirmed that the cellulose microfibrils can improve the ease of cleansing of the film-forming polymer which has been previously used for cleansing.