KR102552785B1 - Cosmetic composition of powder form suitable for covering the skin pores - Google Patents

Abstract

The present disclosure provides an anhydrous formulation cosmetic composition comprising spherical silica, spherical PMSQ powder and silicone oil. The anhydrous formulation cosmetic composition of the present disclosure can provide a transparent feeling of use with a more excellent pore blocking effect and a lower cloudiness by using spherical silica larger than the size previously used.

Description

Powder formulation cosmetic composition suitable for pore cover {COSMETIC COMPOSITION OF POWDER FORM SUITABLE FOR COVERING THE SKIN PORES}

The present disclosure discloses a cosmetic composition in a powder formulation having a pore covering effect. Specifically, the present disclosure discloses a cosmetic composition in a powder formulation suitable for covering pores, including silica.

Existing high-coverage powder products are being developed into various product types such as loose powder, twin pact, two-way cake, and powder foundation. These products have generally been developed in the direction of covering skin imperfections by forming a thick cosmetic film by containing a large amount of high refractive index powders with good reflective effects such as titanium dioxide. However, these conventional high-coverage powder products contain a large amount of powder, and there is a problem in that the powder is stuck in the pores due to the combination of the sebum of the skin and the pores look conspicuous. Accordingly, in the recent makeup trend that is natural, transparent, and has an improved skin texture, there has been a need to develop a powder product that effectively covers pores and has an improved skin texture effect.

Korean Patent Publication No. 10-2018-0053232

The present disclosure was intended to provide a cosmetic composition having an excellent effect of blurring pores, unlike conventional cosmetic compositions. Specifically, it was intended to provide a cosmetic composition having an effect of blurring pores by using spherical silica.

The present disclosure provides an anhydrous formulation cosmetic composition containing spherical silica having a volume-weighted average particle size of 10 to 20 μm, spherical polymethyl silsesquioxane (PMSQ) powder, and silicone oil.

In one embodiment, the weight ratio of the spherical PMSQ powder to the silicone oil may be 1:0.5 to 1:1.9.

In one embodiment, the silicone oil may have a viscosity of 1000 cps or less.

In one embodiment, the cosmetic composition may be a powder formulation.

It was confirmed that the anhydrous formulation cosmetic composition of the present disclosure uses spherical silica having a volume-weighted average particle size of 10 to 20 μm to cover pores more effectively than conventional pore-covering cosmetic compositions, and has excellent transparency due to low cloudiness. In addition, the usability of the spherical silica having a volume-weighted average particle size of 10 to 20 μm was improved by further including PMSQ powder and silicone oil.

1 is a photograph of pores before applying the product to the skin to measure the number of pores in Experiment 1 of Example.
2 is a photograph of skin pores coated with silica having a volume-weighted average particle size of 7.5 μm in Experiment 1 of Example.
3 is a photograph of skin pores coated with silica having a volume-weighted average particle size of 17 μm in Experiment 1 of Example.
4 is a photograph of skin pores coated with HDI/Trimethylol Hexyllactone Crosspolymer having a volume-weighted average particle size of 19 μm in Experiment 1 of Example.
5 is a photograph of artificial leather coated with silica having a volume-weighted average particle size of 7.5 μm for transparency measurement in Experiment 1 of Example.
6 is a photograph of artificial leather coated with silica having a volume-weighted average particle size of 17 μm for transparency measurement in Experiment 1 of Example.
7 is a photograph of artificial leather coated with HDI/Trimethylol Hexyllactone Crosspolymer having a volume-weighted average particle size of 19 μm for transparency measurement in Experiment 1 of Example.
8 is a photograph of pores before applying the product to the skin to measure the number of pores in Experiment 2 of Example.
9 is a photograph of skin pores to which the composition of Experimental Example 1 of Experiment 2 of Example was applied.
10 is a photograph of skin pores applied with the composition of Experimental Example 2 of Experiment 2 of Example.
11 is a photograph of skin pores applied with the composition of Experimental Example 3 of Experiment 2 of Example.
12 is a photograph of skin pores applied with the composition of Experimental Example 4 of Experiment 2 of Example.

The anhydrous cosmetic composition of the present disclosure is a cosmetic composition with excellent pore covering ability and excellent transparency due to low cloudiness. Spherical silica with a volume-weighted average particle size of 10 to 20 ㎛ is superior in pore coverage and transparency compared to spherical silica with a diameter of 5 to 8 ㎛, but has a rough feeling of use due to the feeling of particles during use, making it a conventional powder-type cosmetic was not used often. However, the present disclosure attempted to improve the feeling of use of silica having a large particle size by mixing elastic spherical PMSQ powder with spherical silica having a volume-weighted average particle size of 10 to 20 μm. However, the spherical PMSQ powder has a cloudy feeling, which can solve the cloudiness problem by mixing low-viscosity silicone oil having a viscosity of 1000 cps or less in an appropriate weight ratio, and can realize a high transparency and excellent pore covering effect without a cloudy feeling.

The present disclosure also uses spherical silica and PMSQ powder. Spherical powder is a powder whose particles are spherical, and is included in a powder cosmetic composition to give a smooth and light touch. The spherical powder has an effect of diffusing light in all directions, and thus has an excellent effect of concealing skin defects such as pores and acne marks compared to flake powder. In addition, the spherical powder is characterized in that it is lightly applied without clumping when applied on a sticky cosmetic film. Accordingly, a powder cosmetic composition having a high ratio of spherical powder is effective for natural skin presentation and has an effect of improving the holding power of a cosmetic film, so it is suitable for fixing a cosmetic film and for correcting makeup.

The particle size in the present disclosure is the average particle size measured using Malvern's Mastersizer 2000. The average particle size means the particle size in the volume weighted mean (D[4,3]).

Accordingly, the present disclosure provides a spherical silica having a volume weighted average particle size of 10 to 20 μm; spherical PMSQ powder; And it provides an anhydrous formulation cosmetic composition containing a silicone oil.

Specifically, the volume-weighted average particle size of the spherical silica is 10 μm or more, 11 μm or more, 12 μm or more, 13 μm or more, or 14 μm or more, and 20 μm or less, 19 μm or less, 18 μm or less, or 17 μm or less. , 16 μm or less, or 15 μm or less.

In one embodiment, the PMSQ powder:silicone oil weight ratio may be 1:0.5 to 1:1.9. Specifically, the weight ratio is 1:0.5 or more, 1:0.6 or more, 1:0.7 or more, 1:0.8 or more, 1:0.9 or more, or 1:1.0 or more, 1:1.9 or less, 1:1.8 or less, 1:1.7 or less, 1:1.6 or less, 1:1.5 or less, 1:1.4 or less, 1:1.3 or less, 1:1.2 or less, or 1:1.1 or less.

In one embodiment, the silicone oil may have a viscosity of 1000 cps or less. When the viscosity is 1000 cps or more, the transparency increases, but the pore covering ability decreases, and the powders aggregate, resulting in deterioration in usability such as spreadability and powder durability. Specifically, the viscosity may be 1 to 1000 cps. Specifically, the viscosity may be 50 to 100 cps. More specifically, the viscosity is 1 cps or more, 7 cps or more, 14 cps or more, 21 cps or more, 28 cps or more, 35 cps or more, 40 cps or more, 45 cps or more, 50 cps or more, 55 cps or more, or 60 cps 63 cps or more, 66 cps or more, 69 cps or more, 72 cps or more, or 75 cps or more, and 1000 cps or less, 900 cps or less, 800 cps or less, 700 cps or less, 600 cps or less, 500 cps or less, 400 cps 350 cps or less, 300 cps or less, 250 cps or less, 220 cps or less, 190 cps or less, 160 cps or less, 130 cps or less, 100 cps or less, 90 cps or less, 85 cps or less, 80 cps or less, 78 cps or less; or It can be 76 cps or less.

In one embodiment, the silicone oil is dimethicone, methyltrimethicone, phenyltrimethicone, diphenylsiloxytrimethicone, diphenylsiloxyphenyltrimethicone, diphenyldimethicone, and trisiloxane/dimethicone. It may be one or more selected from the group consisting of

In one embodiment, the content of the silica may be 50 to 95% by weight based on the total weight of the composition. Specifically, 50% by weight or more, 53% by weight or more, 58% by weight or more, 61% by weight or more, 64% by weight or more, 67% by weight or more, 68% by weight or more, 69% by weight or more, 70% by weight or more, 71% by weight or more % or 72% or more, 95% or less, 92% or less, 89% or less, 86% or less, 83% or less, 80% or less, 77% or less, 76% or less, 75% or less no more than 74 wt%, or no more than 73 wt%.

In one embodiment, the content of the PMSQ powder may be 1 to 20% by weight based on the total weight of the composition. Specifically, at least 1% by weight, at least 2% by weight, at least 3% by weight, at least 4% by weight, at least 5% by weight, at least 6% by weight, at least 7% by weight, at least 8% by weight, at least 9% by weight, or 10 greater than or equal to 20%, less than or equal to 19%, less than or equal to 18%, less than or equal to 17%, less than or equal to 16%, less than or equal to 15%, less than or equal to 14%, less than or equal to 13%, less than or equal to 12% or 11% by weight or less.

In one embodiment, the cosmetic composition may be a powder formulation. The powder formulation may be a powdered powder formulation or a compressed powder formulation. Specifically, it may be a powder formulation having functions of powder pact, foundation, and two-way cake.

Hereinafter, the present invention will be described in more detail through examples. These examples are only for illustrating the present invention, and it will be apparent to those skilled in the art that the scope of the present invention is not to be construed as being limited by these examples.

How to measure the number of pores

For the number of pores, the number of pores before and after application of the product was compared by taking a picture of the cheek part, which is easy to visually observe the pores, with a diameter of 1 cm with a magnifying glass. The relative number of pores was measured based on 100 pores.

Transparency L value measurement method

For transparency, 0.03 g of powder was applied to the surface of black artificial leather (2 cm X 2 cm) and the L value was measured with a colorimeter. The L value of black artificial leather before powder application was 25.6. The color difference meter is a color measurement device, and the L value means brightness. The black color has a low L value, and the white color has a high L value. Therefore, the higher the L value, the more cloudy it is, and the lower the L value, the more transparent it is.

[Experiment 1] Silica size and comparison experiment with other powders

powder silica silica HDI/Trimethylol Hexyllactone Crosspolymer Volume weighted average particle size (D[4,3]) 7.5 μm 17 μm 19 μm number of pores 45 (Fig. 2) 31 (Fig. 3) 66 (Fig. 4) Transparency (L value) 47.6 (Fig. 5) 40.1 (Fig. 6) 48.3 (Fig. 7) Transparency (Panel Rating) 3 5 2

The panel evaluation was conducted targeting 10 professional panel evaluation groups between the ages of 20 and 40. The feeling of use after applying the powder to the skin was tested. 5 points is very transparent and spreads without clumping, 4 points is relatively transparent and applies without clumping, 3 points is little whitening phenomenon, but the transparency is low or the powder clumps a little, 2 points is thick or The degree of whiteness and aggregation of the powder, and 1 point means the degree of whiteness or aggregation.

From the results of Experiment 1, when comparing silica and another powder, HDI/Trimethylol Hexyllactone Crosspolymer, when the size is similarly between 10 and 20 ㎛, the pore coverage of silica is about 2 times better, and the transparency of silica powder is also excellent. And it was found. In addition, when comparing silicas of different sizes, it was observed that the 7.5 μm-sized silica had slightly lower pore coverage and lower transparency than the 17 μm-sized silica.

Therefore, it was found that it is most advantageous to use 17 μm silica powder in order for the cosmetic composition to have a transparent feeling without cloudiness while having excellent pore covering ability. However, silica having a particle size of 10 to 20 μm has a slightly uncomfortable feeling when used, so in order to improve this, the following Experiment 2 was conducted in which PMSQ powder and silicone oil were combined.

[Experiment 2] PMSQ Combination of powder and silicone oil

Experiments were conducted to improve the feeling of use of the above-mentioned silica having a particle size of 10 to 20 μm. Table 2 is the prescription used in the experiment, and the number of pores and transparency test results according to each prescription are shown in Table 3.

The PMSQ powder in Table 2 below was used having a particle size of 3.5 μm. In addition, Dow Corning's XIAMETER PMX-200 SILICONE FLUID 20cs was used as the oil having a viscosity of 20 cps, and SeraSense SF DDM10K of KCC was used as the oil having a viscosity of 10,000 cps.

Prescription (% by weight) Experimental Example 1 Experimental Example 2 Experimental Example 3 Experimental Example 4 Silica (17 μm) 90 80 70 80 PMSQ (3.5 μm) 10 10 10 10 20 cps silicone oil - 10 20 - 10000 cps silicone oil - - - 10

Experimental Example 1 Experimental Example 2 Experimental Example 3 Experimental Example 4 number of pores 47.7 (Fig. 9) 41.9 (Fig. 10) 84.9 (Fig. 11) 98.8 (Fig. 12) Transparency (L value) 46.3 42.0 41.7 - explanation Cloudy feeling and low transparency Transparent without cloudiness Transparent without white cast, but poor pore coverage Powder clumps and is not applied evenly

Looking at the above results, it was found that Test Example 2 had excellent pore covering ability, low cloudiness and excellent transparency. In Experimental Example 1, which did not use silicone oil, it was found that the pore covering power was somewhat low, as well as a cloudy feeling and poor transparency. In Experimental Example 3, in which the weight ratio of PMSQ powder and silicone oil was 1:2, there was no cloudiness and transparency was excellent, but it was confirmed that the pore covering ability was poor due to the large amount of silicone oil. In Experimental Example 4, it was confirmed that the powder was agglomerated and not applied evenly using high-viscosity silicone oil.

According to Experiments 1 and 2, a cosmetic composition obtained by mixing PMSQ powder and low-viscosity silicone oil in an appropriate ratio with silica powder having a volume-weighted average particle size of 10 to 20 μm shows excellent pore coverage, low cloudiness, and excellent transparency. confirmed that

Claims (7)

Spherical silica having a volume-weighted average particle size of 11 to 20 μm;
Spherical PMSQ (Polymethyl silsesquioxane) powder; and
Silicone oil with a viscosity of 1000 cps or less
An anhydrous formulation cosmetic composition comprising a. According to claim 1, wherein the PMSQ powder: silicone oil weight ratio of 1: 0.5 to 1: 1.9, anhydrous formulation cosmetic composition. delete The method of claim 1, wherein the silicone oil is dimethicone, methyltrimethicone, phenyltrimethicone, diphenylsiloxytrimethicone, diphenylsiloxyphenyltrimethicone, diphenyldimethicone and trisiloxane/dimethicone. At least one selected from the group consisting of, an anhydrous formulation cosmetic composition. According to claim 1, wherein the content of the silica is 50 to 95% by weight based on the total weight of the composition, anhydrous formulation cosmetic composition. According to claim 1, wherein the content of the PMSQ powder is 1 to 20% by weight based on the total weight of the composition, anhydrous formulation cosmetic composition. According to claim 1, wherein the cosmetic composition is a powder formulation, anhydrous formulation cosmetic composition.

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