阅读说明：本技术 利用微粒工序分散的粉末组合物及其制造方法 (Powder composition dispersed by fine particle process and method for producing the same ) 是由 徐正元 田硕珉 朴星美 金成勇 李和映 朴千号 朴明三 于 2019-10-31 设计创作，主要内容包括：本发明提供利用微粒工序分散的粉末组合物及其制造方法。本发明提供一种可以包含在化妆品组合物中的微细化、均质化的粉末组合物,利用该粉末组合物能够制造优异的粘附力、高遮盖力、持久性、轻柔使用感等得到改善的化妆品组合物。通过使用本发明的粉末组合物,有效地填补皱纹、毛孔等皮肤的凹凸,从而能够表现出光滑的皮肤,能够均匀地遮盖皮肤而不产生白浊,皮肤粘附力优异。(The invention provides a powder composition dispersed by a microparticle process and a method for producing the same. The present invention provides a finely divided and homogenized powder composition that can be included in a cosmetic composition, with which a cosmetic composition improved in terms of excellent adhesion, high hiding power, durability, soft feeling in use, and the like can be produced. By using the powder composition of the present invention, unevenness of the skin such as wrinkles and pores can be effectively filled up, smooth skin can be expressed, the skin can be uniformly covered without cloudiness, and the skin adhesion is excellent.)

1. A method for producing a powder composition, which is a method for producing a powder composition contained in a cosmetic composition, wherein the method for producing comprises:

step S1, mixing the solvent and the powder; and

step S2, dispersing the powder and the solvent mixed by the step S1 using a high pressure disperser,

the solvent is an aqueous solvent, an oily solvent or a mixed solvent of the aqueous solvent and the oily solvent.

2. The method for producing a powder composition according to claim 1,

said step S2 of dispersing with the high-pressure disperser is carried out at a pressure of 600bar to 1500 bar.

3. The method for producing a powder composition according to claim 2,

the step S2 of dispersing with the high pressure disperser is repeated three times or more.

4. The method for producing a powder composition according to claim 1,

the powder is one or more selected from the group consisting of titanium dioxide, fine-particle titanium dioxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, ultramarine, and chromium oxide green.

5. The method for producing a powder composition according to claim 1,

the solvent is more than one selected from the group consisting of cyclopentasiloxane, cyclohexasiloxane, 1 CS-100 CS polydimethylsiloxane, phenyl trimethicone, diphenyl siloxy phenyl trimethicone, octyl methicone, methyl trimethicone, isononyl isononanoate, isododecane, isohexadecane, C12-15 alkyl benzoate, caprylic/capric triglyceride, octyldodecanol, butanediol, glycerol and purified water.

6. The method for producing a powder composition according to any one of claims 1 to 3,

said step S1 of mixing the solvent and the powder includes the steps of: a dispersant is further mixed in the solvent and the powder.

7. The method for producing a powder composition according to claim 6,

the dispersing agent is selected from PEG-10 polydimethylsiloxane, cetyl PEG/PPG-10/1 polydimethylsiloxane, lauryl PEG-9 polydimethylsiloxane, lauryl PEG-8 polydimethylsiloxane, lauryl PEG/PPG-18/18 polydimethylsiloxane, PEG/PPG-19/19 polydimethylsiloxane, bis-PEG/PPG-14/14 polydimethylsiloxane, PEG/PPG-18/18 polydimethylsiloxane, PEG/PPG-20/20 polydimethylsiloxane, polyglyceryl-3 polydimethylsiloxane, polyglyceryl-4isostearate, sorbitan isostearate, dimethicone, and combinations thereof, Sorbitan sesquioleate, polypropylsilsesquioxane, and acrylate-ethylhexyl acrylate-polydimethylsiloxane methacrylate copolymer.

8. A powder composition is provided, wherein,

the powder composition comprises a mixture of a solvent and a powder,

the solvent is an aqueous solvent, an oily solvent or a mixed solvent of the aqueous solvent and the oily solvent,

the mixture of the solvent and the powder is a mixture dispersed by a high-pressure disperser.

9. The powder composition according to claim 8,

the mixture of solvent and powder is a mixture dispersed with a high-pressure disperser at a pressure of 600bar to 1500 bar.

10. The powder composition according to claim 9,

the mixture of the solvent and the powder is a mixture dispersed three or more times by a high-pressure disperser.

11. The powder composition according to claim 8,

the powder is one or more selected from the group consisting of titanium dioxide, fine-particle titanium dioxide, zinc oxide, yellow iron oxide, red iron oxide, black iron oxide, ultramarine, and chromium oxide green.

12. The powder composition according to claim 8,

the solvent is more than one selected from the group consisting of cyclopentasiloxane, cyclohexasiloxane, 1 CS-100 CS polydimethylsiloxane, phenyl trimethicone, diphenyl siloxy phenyl trimethicone, octyl methicone, methyl trimethicone, isononyl isononanoate, isododecane, isohexadecane, C12-15 alkyl benzoate, caprylic/capric triglyceride, octyldodecanol, butanediol, glycerol and purified water.

13. The powder composition according to any one of claims 8 to 10,

the mixture of the solvent and the powder is a mixture further mixed with a dispersant.

14. The powder composition according to claim 13,

the dispersing agent is selected from PEG-10 polydimethylsiloxane, cetyl PEG/PPG-10/1 polydimethylsiloxane, lauryl PEG-9 polydimethylsiloxane, lauryl PEG-8 polydimethylsiloxane, lauryl PEG/PPG-18/18 polydimethylsiloxane, PEG/PPG-19/19 polydimethylsiloxane, bis-PEG/PPG-14/14 polydimethylsiloxane, PEG/PPG-18/18 polydimethylsiloxane, PEG/PPG-20/20 polydimethylsiloxane, polyglyceryl-3 polydimethylsiloxane, polyglyceryl-4isostearate, sorbitan isostearate, dimethicone, and combinations thereof, Sorbitan sesquioleate, polypropylsilsesquioxane, and acrylate-ethylhexyl acrylate-polydimethylsiloxane methacrylate copolymer.

15. A method for producing a cosmetic composition, wherein the method for producing a cosmetic composition comprises:

step S1, mixing the solvent and the powder;

a step S2 of dispersing the powder and the solvent mixed by the step S1 using a high pressure disperser; and

step S3, mixing an oil phase component, a water phase component or a mixture of the oil phase component and the water phase component in the powder and the solvent dispersed by the step S2,

the solvent is an aqueous solvent, an oily solvent or a mixed solvent of the aqueous solvent and the oily solvent.

16. A cosmetic composition comprising a powder composition and an oil phase component, a water phase component or an oil phase component and a water phase component, wherein,

the powder composition is a mixture in which a solvent and powder are mixed by a high-pressure disperser,

the solvent is an oily solvent, an aqueous solvent or a mixed solvent of the aqueous solvent and the oily solvent.

17. The cosmetic composition of claim 16,

the makeup cosmetic composition is of an emulsion type, an oil dispersion type or a water dispersion type.

Technical Field

The present invention relates to a method for producing a powder composition contained in a cosmetic composition and a powder composition produced by the method, and more particularly, to a method for producing a powder composition with improved effects of pulverization and homogenization of particles of the powder composition and a powder composition produced by the method.

Background

The makeup cosmetic composition is required to be applied to the skin gently at the time of application, is excellent in skin adhesion and covering effects, does not shine with time, and is excellent in stability to the skin. This property is greatly influenced by the powder contained in the cosmetic.

In general, widely known emulsion-type or oil-dispersion-type makeup cosmetic compositions use various types of powders and have various types of addition steps and dispersion steps. As a method, there is a method of mixing powders and dispersing them by direct addition to a cosmetic manufacturing apparatus after pulverization by an Atomizer (Atomizer), which has the following disadvantages: in the manufacturing process, powder dust is generated in many cases, it is difficult to adjust the color in manufacturing, and there are problems as follows: the powder particles are not fine and have a poor homogenization effect. As another method, there is a method in which a powder composition is produced by mixing a powder with a solvent and using a Roll Mill (Roll Mill), a bead Mill (B ead Mill), or the like, and added to a cosmetic production facility for dispersion, and this method has the following advantages as compared with the first method described above: no powder dust is generated, and the color can be adjusted in the manufacturing process. However, there are disadvantages as follows: in the production of a powder composition, there is a risk of operating production equipment, and depending on production conditions, the quality of the powder composition is not uniform, so that a coagulation phenomenon occurs when a cosmetic produced from the powder composition is used.

Disclosure of Invention

Problems to be solved by the invention

In order to solve the above-described problems, the present invention provides a powder composition contained in a cosmetic that provides excellent skin adhesion and hiding power, durability, and a soft feeling in use by improving the effect of micronization and homogenization of particles, and a method for producing the same.

Technical scheme for solving problems

The present invention provides a method for producing a powder composition, which is a method for producing a powder composition contained in a cosmetic composition, wherein the method for producing a powder composition comprises: step S1, mixing the powder and the solvent; and a step S2 of dispersing with a high pressure disperser after the mixing of the step S1, the solvent being an aqueous solvent, an oily solvent or a mixed solvent of an aqueous solvent and an oily solvent. In particular, it is characterized in that said step of dispersing (S2) with a high-pressure disperser is carried out at a pressure of 600 to 1500bar, and in that this step of dispersing is repeated three more times. In the step S1 of mixing the powder and the solvent, a dispersing agent may be further mixed to produce the powder composition of the present invention.

The present invention also provides a method for producing a cosmetic composition, wherein the method for producing a cosmetic composition comprises: step S1, mixing the powder and the solvent; a step S2 of performing dispersion using a high pressure disperser after the mixing of the step S1; and a step S3 of mixing an oil phase component and/or an aqueous phase component in the powder composition dispersed in the step S2. Further, a cosmetic composition comprising the powder composition produced by the above production method is provided.

Effects of the invention

The present invention is intended to provide a cosmetic composition which is improved in terms of excellent adhesion, high hiding power, durability, light feeling in use, and the like by applying a micronized and homogenized powder composition to a cosmetic composition. By using the micronized and homogenized powder composition, unevenness of the skin such as wrinkles and pores can be effectively filled up, smooth skin can be expressed, and the skin can be uniformly covered without generating white turbidity. In addition, the surface area of the micronized powder is larger, and thus the oil absorption capacity is higher, thereby adhering to the skin more quickly and thinly.

Drawings

Fig. 1A to 1C are photographs observed with a microscope after dispersing a powder composition containing a fine particulate titanium dioxide with a high-pressure dispersing machine under a pressure of 600 bar. Fig. 1A is a case of dispersing once with a high pressure disperser, fig. 1B is a case of dispersing twice, and fig. 1C is a case of dispersing three times.

Fig. 2 is a photograph of a powder composition containing fine-particle titanium dioxide, which is dispersed by stirring and mixing (aggregation Mix) and then observed with a microscope.

FIG. 3 is a comparative graph of particle size analysis for the case of powder compositions containing fine particulate titanium dioxide dispersed by stirring mixing, three-roll mill and high-pressure dispersing by a high-pressure dispersing machine in accordance with pressure (300bar, 600bar, 1500 bar).

Fig. 4A to 4C are photographs observed with a microscope after dispersing a powder composition containing titanium dioxide with a high-pressure disperser at a pressure of 600 bar. Fig. 4A is a case of dispersing once with a high pressure disperser, fig. 4B is a case of dispersing twice, and fig. 4C is a case of dispersing three times.

Fig. 5 is a photograph observed with a microscope after dispersing a powder composition containing titanium dioxide by stirring and mixing.

Fig. 6 is a comparative graph of particle size analysis for the case of mixing with stirring, dispersion with a three-roll mill, and dispersion with a high-pressure disperser under pressure (300bar, 600bar, 1500bar) for a powder composition containing titanium dioxide.

Fig. 7 shows sensory test results of a makeup cosmetic composition including the powder composition manufactured by changing the dispersion process.

Fig. 8 shows the results of measuring the Average Melanin level (Average Melanin level) before and after application of the makeup cosmetic composition of the present invention and the composition of comparative example.

Fig. 9 is a photograph of the skin surface before and after application of the makeup cosmetic composition of the present invention and the composition of comparative example.

Detailed Description

The present invention relates to a method for producing a powder composition suitable for a cosmetic composition, and a powder composition produced by the method, which is characterized by improving the effect of micronization and homogenization of powder composition particles, thereby providing excellent skin adhesion and hiding power, durability, and a soft feeling in use.

In the present specification, the solvent refers to a liquid for dissolving a substance, and may be an aqueous solvent, an oily solvent, or a mixed solvent of an aqueous solvent and an oily solvent, and is a liquid that can be appropriately selected and used by a person of ordinary skill in the art to which the present invention pertains.

In the present specification, the oil phase component means a component which can be combined with an oil agent to prepare an oil phase composition when preparing an oil-in-water type cosmetic. The aqueous phase component is a component that can be combined with an aqueous medium such as water to prepare an aqueous phase composition when preparing an oil-in-water type cosmetic.

The method for producing the powder composition of the present invention comprises: step S1, mixing Powder (Powder) and Solvent (Solvent); and a step S2 of dispersing the mixture using a High-pressure disperser (High-pressure homogenizer) after the mixing in the step S1.

In the present invention, dispersion means dispersion by dispersing a solid such as a powder form in Suspension (sustension) in a liquid, applying strong energy to the substance to make the size of particles fine. Therefore, the step S2 of dispersing with the high-pressure disperser aims to make the powder pass through the high-pressure system, thereby making the particles fine and uniform.

Characterized in that the dispersing step with the high-pressure disperser is carried out at a pressure of 600 to 1500 bar. When the pressure is less than 600bar, the effect of pulverizing the powder is small, and when the pressure is increased, the pulverizing effect is increased, but when the pressure exceeds 1500bar, the difference is very small. Further, the dispersion is characterized by being dispersed three or more times in a dispersion step by a high-pressure disperser. The effect of the micronization increases as the number of times of dispersion increases, but the difference is very small when the dispersion is performed three times or more.

In the present invention, the powder composition is a composition produced by mixing a powder and a solvent (solvent) for dispersing the powder by a high-pressure dispersing machine, and the solvent may be an oily solvent, an aqueous solvent, or a mixed solvent of these solvents. Further, the powder composition of the present invention may be added with a dispersing agent to prevent re-agglomeration of the dispersed powder and to improve the stability of the composition.

In the powder composition, the powder may be one or more selected from the group consisting of Titanium Dioxide (Titanium Dioxide), fine particulate Titanium Dioxide, Zinc Oxide (Zinc Oxide), Yellow Iron Oxide (CI 77492), red Iron Oxide (CI 77491), Black Iron Oxide (CI 77499), Ultramarine (CI 77007), and Chromium Oxide Green (CI 77288). The powder may be mixed and used by appropriately selecting whether or not the powder is contained and the content thereof depending on the ultraviolet shielding effect, hiding power, color development, and the like exhibited when the powder is applied to the skin.

The powder may be coated with one or more coating materials selected from the group consisting of triethoxyoctylsilane (triethoxycaprylsilane), Lauroyl Lysine (Lauroyl Lysine), Disodium stearoyl glutamate (Disodium stearate), and Titanium Triisostearate (isoproyl Titanium trisstearate).

The solvent may be one or more selected from the group consisting of Cyclopentasiloxane (Cyclopentasiloxane), Cyclohexasiloxane (cyclophexaloxane), polydimethylsiloxane 1 CS-100 CS (Dimethicone 1 CS-100 CS), Phenyl Trimethicone (Phenyl Trimethicone), diphenylsiloxyphenyl Trimethicone (Diphenylsiloxy Trimethicone), octylmethicone (caprylyl Methicone), isooctyl Methicone (caprylyl Methicone), Methyl Trimethicone (Methyl Trimethicone), Isononyl Isononanoate (Isononyl isononate), Isododecane (Isododecane), isohexadecane (Isohexa. decahydrate), C12-15 alkyl benzoate (C12-15 AlkylBenzoate), Caprylic/Capric Triglyceride (caprylyl/Capric Triglyceride), Octyldodecanol (octodecyl alcohol), butylglycol (butyl Glycol), and glycerine (glycerine).

The dispersant may be selected from the group consisting of PEG-10 Dimethicone (PEG-10 Dimethicon e), Cetyl PEG/PPG-10/1 Dimethicone (CetylPEG/PPG-10/1 Dimethicon e), Lauryl PEG-9 dimethiconoethyl Dimethicone (Lauryl PEG-9 polydiethylsiloxydimethicone), PEG-9 dimethiconoethyl Dimethicone (P EG-9 polydimethysiloxydimethicone), Lauryl PEG-8Dimethicone (Lauryl PEG-8 Dimethicon), Lauryl PEG/PPG-18/18Methicone (Lauryl PEG/PPG-18/18 Dimethicon e), PEG/PPG-19/19 Dimethicone (PEG/PPG-19/19 Dimethicon), Bis-PEG/14/14 Dimethicone (Bis-PEG Bimethicone) PPG-14/14 Dimethicone), PEG/PPG-18/18 polydimethylsiloxane (PEG/PPG-18/18 Dimethicone), PEG/PPG-20/20 polydimethylsiloxane (PEG/PPG-20/20Dimethicone), Polyglyceryl-3 Dimethylsiloxyethylpolydimethylsiloxane (Polyglyceryl-3 polydisiloxy thimethyl Dimethicone), Polyglyceryl-4Isostearate (Polyglyceryl-4Isostearate), Sorbitan Isostearate (Sorbitan Isostearate), Sorbitan sesquioleate (Sorbitan sequioate), Polypropylsilsesquioxane (polypropylssequioxane), acrylate-EthylhexylAcrylate-polydimethylsiloxane Methacrylate Copolymer (Acrylates/EthylhexylAcrylate/D dimethylsiloxane Methacrylate Copolymer).

The powder composition of the present invention may be contained in a step of producing an emulsion type, water dispersion type or oil dispersion type cosmetic composition by mixing with an oil phase component and/or an aqueous phase component, the cosmetic composition containing the powder composition being produced by a method comprising the steps of: step S1, mixing the powder and the solvent; a step S2 of performing dispersion using a high pressure disperser after the mixing of the step S1; and a step S3 of mixing an oil phase component, a water phase component or a mixture of the oil phase component and the water phase component in the powder and the solvent dispersed in the step S2.

As an example, in the case where the cosmetic composition includes an oil phase component and an aqueous phase component, it is preferable that the powder composition may include 10 wt% to 40 wt%, the oil phase component may include 10 wt% to 40 wt%, and the aqueous phase component may include 20 wt% to 60 wt%, based on the total weight of the cosmetic composition.

The powder composition of the present invention may be selected as appropriate by one of ordinary skill in the art to be included in a cosmetic composition for a particular use, for example, may be included in a make-up or skin care cosmetic composition. The cosmetic composition may further contain other additives such as a fragrance and a preservative, but is not limited thereto.

The present invention will be described in further detail below with reference to experimental examples and examples. In particular, the effect of dispersion by the high-pressure disperser was observed centering on the figure. However, these examples are only for illustrating the present invention, and thus the scope of the present invention should not be construed as being limited by these examples.

Experimental example 1 comparison of Dispersion states of Fine particulate titanium dioxide powder compositions in Dispersion Process

The powder composition prepared by mixing the powder, the solvent and the additive was compared in terms of the state of particle dispersion and the size by changing the dispersion step. FIGS. 1A to 1C are magnified photographs taken by a microscope of a powder composition which is dispersed under a pressure of 600bar by a high pressure dispersing machine after mixing fine particulate titanium dioxide, cyclopentasiloxane, and PE G-10 polydimethylsiloxane, and FIG. 2 is a magnified photograph of a powder composition which is dispersed by stirring and mixing (Agitation Mix) after mixing fine particulate titanium dioxide with cyclopentasiloxane and PEG-10 polydimethylsiloxane.

When fig. 1A to 1C and fig. 2 are compared, it is confirmed that the powder particles of the powder composition (fig. 1A to 1C) dispersed by the high-pressure dispersing machine are very small and are homogenized and dispersed.

Fig. 3 is a comparative graph of particle size analysis in which the particle sizes of powder compositions dispersed in different steps are relatively compared after the powder compositions containing fine particulate titanium dioxide are mixed in the composition as described above. Particle size analysis was performed using an analyzer from Malvern. In fig. 3, it can be confirmed that the average and standard deviation of the powder particle size of the powder composition dispersed by the high pressure disperser are smaller than those of the powder composition stirred and mixed (mixing Mix) and the powder composition dispersed by the three-roll mill. In particular, it was confirmed that the average particle size was smaller as the pressure was higher when the high-pressure disperser was used. Therefore, in the case of dispersing the powder by a high-pressure dispersing machine, the particle size can be uniformly distributed, so that when the cosmetic composition containing the powder is applied to the skin, the cosmetic composition can be smoothly covered, and even if the cosmetic composition is repeatedly applied to the skin, the aggregation or the lifting phenomenon is less likely to occur, and the quality can be easily maintained in mass production. In addition, when high-pressure dispersion is performed, the larger the pressure is, the smaller the average particle size is, particularly, at 600bar or more, the very small average particle size is exhibited, and thus the adhesion can be remarkably improved.

Experimental example 2 comparison of Dispersion State of titanium dioxide powder composition based on Dispersion Process

Fig. 4A to 4C are enlarged microscope photographs of powder compositions manufactured by dispersing titanium dioxide, cyclopentasiloxane, and PEG-10 polydimethylsiloxane under a pressure of 600bar using a high-pressure dispersing machine, and fig. 5 is an enlarged microscope photograph of a powder composition manufactured by mixing titanium dioxide, cyclopentasiloxane, and PEG-10 polydimethylsiloxane and then dispersing them by stirring and mixing.

If fig. 4A to 4C and fig. 5 are compared, it is confirmed that the powder particles of the powder composition (fig. 4A to 4C) dispersed by the high-pressure disperser are very small and are homogenized and dispersed.

Fig. 6 is a comparative graph of particle size analysis in which the particle sizes of powder compositions dispersed in different processes are relatively compared after the composition containing titanium dioxide is mixed and mixed in the composition as described above. It was confirmed that the particles of the powder composition dispersed by the high-pressure disperser were distributed smaller than those of the powder composition stirred and mixed (Agitation Mix) and the powder composition by the three-roll mill, and it was confirmed that the average and standard deviation of the particle size were smaller as the pressure was larger when the high-pressure disperser was used.

Experimental example 3 preparation of a makeup cosmetic composition comprising powder compositions of different dispersion steps

(1) EXAMPLE 1 production

The powder composition, oil phase component and water phase component were mixed as shown in the following [ table 1] to prepare a makeup cosmetic composition.

Specifically, the makeup cosmetic composition of example 1 was produced by mixing the powder, the solvent, and the dispersant, dispersing the mixture three times by a high-pressure disperser at a pressure of 600bar to produce a powder composition, mixing the oil-phase component and dispersing the mixture by a homomixer, and then mixing the water-phase component and dispersing the mixture by a homomixer.

The cosmetic composition was prepared by mixing 29.5 wt% of the powder composition, 35.5 wt% of the oil phase component and 35 wt% of the water phase component, based on the total weight of the cosmetic composition. At this time, the powder composition contained 17.8 wt% of powder, 11 wt% of cyclopentasiloxane, and 0.7 wt% of PEG-10 polydimethylsiloxane, based on the total weight of the makeup cosmetic composition. Specifically, the powder contained in the powder composition is a powder of mixed fine particle titanium dioxide, yellow iron oxide, red iron oxide, and black iron oxide powder.

[ Table 1]

(2) Example 2 the powder composition of [ table 1] was prepared by dispersing three times by a high pressure dispersing machine in the same manner as in example 1, but applying a pressure of 1000bar, mixing the oil phase component and dispersing by a homomixer, and then mixing the water phase component and dispersing by a homomixer.

(3) Comparative example 1 production

The powder of [ table 1], the solvent, and the dispersant were mixed and dispersed by a roll mill, then the oil phase component was mixed and dispersed by a homomixer, and then the water phase component was mixed and dispersed by a homomixer.

(4) Comparative example 2 production

Unlike examples 1 and 2 and comparative example 1, the makeup cosmetic composition of comparative example 2 was prepared by mixing the following components [ table 2] without a dispersion step.

[ Table 2]

Experimental example 4 evaluation of the makeup cosmetic composition produced in Experimental example 3

(1) Sensory evaluation

In experimental example 4, sensory evaluation (10 point scale method) was performed on examples 1 and 2, comparative example 1, and comparative example 2, which were manufactured. The adhesive feel, thickness feel, covering power, durability, tailing feel, and darkening were evaluated for 9 to 10 points for very good, 7 to 8 points for good, generally 5 to 6 points for bad, 3 to 4 points for bad, and 1 to 2 points for very bad, and the evaluation results are shown in fig. 7. In the present evaluation, the thickness feeling is the thickness feeling of the dosage form which is perceived when first applied to the skin, and when applied thinly and uniformly, it is evaluated to be approximately 10 points. Darkening is a phenomenon in which the skin becomes dark by oxidation with air or binding with sweat or oil on the skin after a certain period of time has elapsed after makeup, and the assessment shows that the darkening is closer to 10 points as the darkening phenomenon is smaller.

As a result of the sensory evaluation, the makeup cosmetic composition including the powder composition using the high pressure dispersion machine of example 1 and example 2 was evaluated more highly than the makeup cosmetic compositions of comparative example 1 and comparative example 2 in all items of the sticky feeling, the thickness feeling, the covering power, the staying power, the tailing feeling, the darkening, and the like.

(2) Comparative evaluation of adhesion masking efficacy

The adhesive hiding efficacy of example 1 and comparative example 1 manufactured in the experimental example 3 was comparatively evaluated by the average melanin level.

5 adults of average age 25.6 years were evaluated after face washing and after resting for 30 minutes under the same conditions. Each substance was applied to both side experimental sites including both lower eyelid boundaries and nasal alar boundaries in the face of the experimenter, where 16 μ L (80% of the amount applied in comparative example 1) was applied to the site of the same area and 20 μ L was applied to comparative example 1.

For the experimental sites, the average melanin level before application of each material was determined using an andrera 3D (miravex, UK) camera, and the average melanin level after application of each material was determined (a of fig. 8). Using the measurement values, the average melanin level increase and decrease rate (B of fig. 8) was calculated according to the following equation 1.

[ mathematical formula 1]

(X: average melanin level at the measurement site before using the product,

y: average melanin level at assay site after product use)

Photographs of the makeup cosmetic compositions of example 1 and comparative example 1 before and after application were taken in the same manner as described above (fig. 9).

As can be seen from B of FIG. 8, it was similarly shown that the average melanin level increase-decrease rate of example 1 was about-11.2%, and the average melanin level increase-decrease rate of comparative example 1 was about-10.8%. This means that example 1 applied with 16 μ L and comparative example 1 applied with 20 μ L reduced melanin production with similar or slightly superior adhesion coverage. Further, as is clear from fig. 9, when 5 examiners applied example 1, it was confirmed that the film exhibited more excellent hiding power. That is, this means that the makeup cosmetic composition of example 1 of the present invention exhibited excellent covering power even at a smaller application amount (80% compared to comparative example 1).