KR102337354B1 - Cosmetic Composition Comprising Pigments and Method for Preparing the Same - Google Patents

Abstract

The present invention relates to a cosmetic composition containing a pigment and a method for manufacturing the same, and a cosmetic composition containing a pigment having improved usability and functionality of the cosmetic composition by uniformizing the particle size distribution of the pigment coated with a coating layer including an oil phase and an aqueous phase; It relates to a manufacturing method.

Description

Cosmetic Composition Comprising Pigments and Method for Preparing the Same

The present invention relates to a cosmetic composition comprising a pigment, and to a cosmetic composition having improved usability and functionality through uniform particle size distribution of the pigment, and a method for manufacturing the same.

In general, makeup cosmetics use pigments to conceal flaws in the skin, give beautiful colors, and are used for the purpose of protecting the skin from UV rays, and furthermore, it is used for the secondary purpose of giving psychological stability by beautifying the skin and protecting the skin. .

The makeup cosmetics have some differences depending on the emulsion type, dispersion type, and powder type formulations, but titanium dioxide (TiO ₂ ) is the most used as a representative white pigment for imparting color and covering skin imperfections. However, in the case of unmodified titanium dioxide, the better the function of hiding skin defects, the more the re-agglomeration phenomenon occurs, which causes agglomeration after makeup. This is very bad and becomes a factor that reduces usability.

In order to overcome these disadvantages, a method is used in which the surface of the pigment is coated or complexed with various substrates. Conventionally, the surface treatment with silicone, fluorine, amino acid, chitosan, metal salt, etc. improves the functions such as adhesion and durability, but it is used to prevent spread and re-agglomeration in the formulation and to prevent makeup collapse during use or after time. is still not satisfactory.

For example, Japanese Patent Registration No. 5667330 discloses a multi-layer coated pigment, and the coating layer is a high refractive film (TiO ₂ , 10-100 nm thick), a colorless film (20-100 nm thick), and a high refractive film (TiO) ₂ , 10-100 nm thick), but it is not possible to present a method for uniform particle size distribution of the pigment including the film as described above, so it may be difficult to secure the feeling of use and functionality when applied to cosmetics. can

In addition, U.S. Patent Publication No. 2004-0258640 relates to an interference pigment that can be used in cosmetics for covering skin imperfections, and although a multi-layer coated type of pigment is disclosed, by improving the particle size of the pigment, the feeling of use and functionality when applied to cosmetics There is no mention of the technology that can secure the

Therefore, there is an urgent need to develop a technology for manufacturing a cosmetic composition that can simultaneously improve the feeling of use and functionality when applied to the skin by improving the particle size distribution while including a coating layer capable of protecting the pigment.

Japanese Patent No. 5667330, “Silver Glossy Pigment” US Patent Publication No. 2004-0258640, “INTERFERENCE PIGMENT AND COMPOSITION INCLUDING SAME”

Accordingly, the present inventors conducted multifaceted research to solve the above problems, and as a result, a cosmetic composition having a uniform particle size distribution was obtained by dispersing the pigment coated with a double coating layer including an oil phase and an aqueous layer using a rotating dispersing device. It was confirmed that the thus-prepared cosmetic composition was thinly adhered to the skin when applied to impart gloss and moisture to the skin, while at the same time providing coverage and preventing lifting and clumping after lapse of time.

Accordingly, an object of the present invention is to provide a cosmetic composition comprising a pigment having improved stability.

Another object of the present invention is to provide a method for preparing a cosmetic composition comprising a pigment having a uniform particle size distribution.

In order to achieve the above object, the present invention provides a cosmetic composition comprising pigment particles coated with a coating layer comprising an oil phase and an aqueous phase.

The particle size of the pigment may be 0.1 μm to 1 μm.

The pigment is one or more inorganic pigments selected from the group consisting of titanium dioxide (TiO ₂ ), zinc oxide, iron oxide, mica, aluminum oxide, barium sulfate, silicon dioxide, silica, talc, kaolin, sericite and boron nitride. can

The oil phase may include at least one selected from the group consisting of dimethicones, methicones, hydrogen dimethicones, caprylic silanes, and fluorine-based silicones.

In addition, the aqueous phase may include one or more selected from the group consisting of lecithins and silicas.

In addition, the coating layer may be a single coating layer including a mixture of an oil phase and an aqueous phase.

In addition, the coating layer may be a double coating layer including an oil phase and an aqueous layer.

In addition, the cosmetic composition may be formulated in the form of water dispersion, oil dispersion, W/O (water in oil) or O/W (oil in water).

In addition, the cosmetic composition may be formulated in the form of a liquid, cream or cake-type foundation, makeup base cosmetic, or UV-blocking cosmetic.

The present invention also provides a method for preparing a cosmetic composition comprising dispersing a pigment and an emulsifier in an aqueous phase, and dispersing it using a rotating dispersing device, to form a coating layer comprising an oil phase and an aqueous phase on the surface of the pigment do.

The rotation speed of the dispersion device may be 5 to 50 m/s.

According to the cosmetic composition according to the present invention, the surface of the pigment particles contained in the cosmetic composition is coated with a double coating layer including an oil phase and an aqueous layer, so that a thin and uniform cosmetic film can be formed when applied to the skin, and It can provide moisture.

In addition, the cosmetic composition according to the present invention can maintain the viscosity at an appropriate level while uniformizing the particle size distribution of the pigment by using a thin film turning type high-speed mixer during the manufacturing process.

As such, since the particle size distribution is uniform and has an appropriate level of viscosity, when the cosmetic composition of the present invention is applied to skin-based cosmetics such as cushion, pact, and foundation, it improves coverage and problems such as lifting or clumping after time elapses can do it

1 is a schematic diagram of a cosmetic composition comprising a pigment according to the present invention.
Figure 2 shows a schematic diagram of a process of dispersing pigment particles using a thin film swirl type high-speed mixer according to the manufacturing method of the cosmetic composition of the present invention.
3 is a micrograph of the cosmetic composition prepared in Example 1 and Comparative Example 1, respectively.
4 is a graph showing the measurement results of the viscosity over time for the cosmetic compositions of Examples 1 and 2 and Comparative Examples 1 and 2;
5 is a graph showing the correlation between the particle size and bulk density (Volume Density, %) of the cosmetic compositions prepared in Example 1 and Comparative Examples 1, 4, and 5, respectively.
6 is a graph showing the results of sensory evaluation of cosmetic compositions of liquid foundation formulations according to Examples 1 and 2 and Comparative Examples 1 and 2;

Hereinafter, the present invention will be described in more detail to help the understanding of the present invention.

The terms or words used in the present specification and claims should not be construed as being limited to ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. Based on the principle that there is, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

containing pigment cosmetics composition

The present invention relates to a cosmetic composition comprising a pigment, and to a cosmetic composition in which the particle size distribution of the pigment particles contained in the cosmetic composition is uniform.

In particular, the cosmetic composition according to the present invention is used as a cosmetic composition for base makeup of the skin, can form a thin cosmetic film when applied to the skin, imparts gloss and moisture to the skin, and has excellent coverage, After elapsed time, it is possible to prevent lifting or agglomeration.

The cosmetic composition according to the present invention may include pigment particles coated with a coating layer comprising an oil phase and an aqueous phase.

The pigment contained in the cosmetic composition according to the present invention has a particle size of 0.1 μm to 1 μm, and if the particle size of the cosmetic composition is less than 0.1 μm, it is out of the confidence interval of the particle size analyzer), and if it exceeds 1 μm, re-agglomeration is can occur

In the present invention, the pigment serves to improve covering power, hiding power, durability, oil repellency, water repellency and usability, for example, spreadability, titanium dioxide (TiO ₂ ), zinc oxide, iron oxide, mica, silica, talc and boron It may be at least one member selected from the group consisting of nitride, and in particular, when titanium dioxide (TiO ₂ ) is used, it may be more advantageous in terms of covering power and hiding power.

In the present invention, the coating layer formed on the surface of the pigment may be in the form of a single layer or a double layer.

1 is a schematic diagram of a cosmetic composition comprising a pigment according to the present invention.

Referring to Figure 1 (a), the pigment (1) including an oil phase and an aqueous phase included in the cosmetic composition according to the present invention is a form in which a single coating layer 20 is formed on the surface of the pigment particle 10, and a single coating layer ( 20) may include a mixture of an oil phase and an aqueous phase.

In addition, referring to Figure 1 (b), the pigment (1) comprising an oil phase and an aqueous phase contained in the cosmetic composition according to the present invention is an oil phase layer (30a) and an aqueous phase layer (30b) on the surface of the pigment particle 10 The double coating layer 30 including the may be in a coated form.

At this time, the weight ratio of the oil phase and the aqueous layer may be 1: 0.1 to 1, preferably 1: 0.3 to 0.6, and if the weight ratio of the aqueous phase to the oil phase is less than 0.1, the efficacy may be reduced in terms of functionality, , if it is greater than 1, there may be a problem in terms of dispersibility.

In the present invention, the oil phase layer serves to improve water repellency and dispersibility in the oil phase, and is selected from the group consisting of dimethicones, methicones, hydrogen dimethicones, caprylic silanes, and fluorine-based silicones. It may include more than one species, and in particular, when the oily layer is made of triethoxycaprylylsilane (TRIETHOXYCAPRYLYLSILANE), it may be advantageous in terms of coverage and dispersibility.

In the present invention, the aqueous layer serves to improve oil repellency and dispersibility in the aqueous phase, and may include at least one selected from the group consisting of lecithins and silicas, and in particular, the aqueous layer If it consists of hydrogenated lecithin (HYDROGENATED LECITHIN), it may be advantageous in terms of dispersibility.

In the present invention, the content of the pigment is 0.01 to 40% by weight, preferably, 1 to 10% by weight based on the total weight of the cosmetic composition. If the content of the pigment is less than the above range, the covering power and hiding power may not be good, and if it exceeds the above range, there is a problem in that it is difficult to stabilize.

The cosmetic composition of the present invention is suitable for various cosmetics, in particular, skin-based cosmetics such as cushions and emulsion foundations, as well as solid cosmetics, for example, loose powders, powder foundations, compressed foundations, ball touches, eye shadows, and eyebrow cakes. , body powder and other solid forms of cosmetics. Here, "solid" means that the composition is solid and non-flowable at 25°C.

The cosmetic composition of the present invention may be formulated in the form of water dispersion, oil dispersion, W/O (water in oil) or O/W (oil in water).

In addition, the cosmetic composition of the present invention may be formulated in the form of a liquid, cream or cake-type foundation, makeup base cosmetic, or UV-blocking cosmetic.

In addition, the cosmetic composition of the present invention may be prepared in any formulation conventionally prepared in the art, for example, a solution, suspension, emulsion, paste, gel, cream, lotion, powder, soap, surfactant- It may be formulated as containing cleansing, oil, powder foundation, emulsion foundation, wax foundation, spray, and the like, but is not limited thereto. More specifically, it may be prepared in the form of a flexible lotion, a nourishing lotion, a nourishing cream, a massage cream, an essence, an eye cream, a cleansing cream, a cleansing foam, a cleansing water, a pack, a spray, or a powder.

When the formulation of the present invention is a paste, cream or gel, animal oil, vegetable oil, wax, paraffin, starch, tracanth, cellulose derivative, polyethylene glycol, silicone, bentonite, silica, talc or zinc oxide may be used as a carrier component. can

When the formulation of the present invention is a powder or a spray, lactose, talc, silica, aluminum hydroxide, calcium silicate or polyamide powder may be used as a carrier component, and in particular, in the case of a spray, additional chlorofluorohydrocarbon, propane /may contain propellants such as butane or dimethyl ether.

When the formulation of the present invention is a solution or emulsion, a solvent, solubilizer or emulsifier is used as a carrier component, such as water, ethanol, isopropanol, ethyl carbonay, ethyl acetate, glycerin, carbomer, benzyl alcohol, benzyl benzo Eate, propylene glycol, 1,3-butyl glycol oil, glycerol aliphatic ester, caprylic capric triglyceride, hydrogenated polydecene, cetearyl glucoside, sorbidan stearate, polyethylene glycol, cetearyl alcohol, etc. have.

When the formulation of the present invention is a suspension, as a carrier component, a liquid diluent such as water, ethanol or propylene glycol, a suspending agent such as ethoxylated isostearyl alcohol, polyoxyethylene sorbitol ester and polyoxyethylene sorbitan ester, and microcrystals Adult cellulose, aluminum metahydroxide, bentonite, agar or tracanth may be used.

When the formulation of the present invention is a surfactant-containing cleansing agent, aliphatic alcohol sulfate, aliphatic alcohol ether sulfate, sulfosuccinic acid monoester, isethionate, imidazolinium derivative, methyl taurate, sarcosinate, fatty acid amide as carrier components Ether sulfate, alkylamidobetaine, fatty alcohol, fatty acid glyceride, fatty acid diethanolamide, vegetable oil, lanolin derivative or ethoxylated glycerol fatty acid ester may be used.

containing pigment cosmetics Method for preparing the composition

The present invention also relates to a method for preparing a cosmetic composition comprising dispersing a pigment and an emulsifier in an aqueous phase, and dispersing it using a rotating dispersing device, to form a coating layer comprising an oil phase and an aqueous phase on the surface of the pigment will be.

Figure 2 shows a schematic diagram of a process of dispersing pigment particles using a thin film vortex-type high-speed mixer according to the manufacturing method of the cosmetic composition of the present invention.

Referring to FIG. 2 , a speed difference is generated due to centrifugal force generated by rotating the treatment liquid along the inner wall of the container, thereby solving secondary aggregation and preventing re-agglomeration, so that the particle size distribution of the pigment can be uniform.

The rotation speed of the dispersing device may be 5 m/s to 50 m/s, and when the rotation speed is less than 5 m/s, the degree of improvement in particle size distribution is insignificant, and when it exceeds 50 m/s, the form of pigment particles can be transformed.

In addition, the emulsifier is added to allow the pigment to be well dispersed in the aqueous phase, and a surfactant with a high hydrophile-liphophile balance (HLB) of 9 to 15 is used as an O/W (oil in water) emulsifier, and PEG- 30 Hydrogenated Castor Oil, glyceryl Stearate and PEG-100 Stearate, Polyethylene Glycol Monoisostearate, Cetearyl Olivate /Sorbitan Olivate, Hydrogenated Lecithin, Arachidyl Alcohol and Behenyl Alcohol and Arachidyl Glucoside, Cetearyl Alcohol ) / cetearyl glucoside (Cetearyl Glucoside), polysorbate (Polysorbate) 80 and polysorbate (Polysorbate) may include at least one selected from the group consisting of 60.

The emulsifier may be included in an amount of 0.1 to 1.5% by weight based on the total weight of the cosmetic composition, and when the content of the emulsifier is included in the above range, the dispersibility of the pigment particles may be excellent.

The cosmetic composition of the present invention prepared according to the manufacturing method as described above may have a uniform particle size distribution and a high viscosity retention rate even after a long period of time, which may be advantageous for formulating into various formulations.

Hereinafter, the present invention will be described in more detail through examples, but the following examples are not intended to limit the scope of the present invention, which should be construed to aid understanding of the present invention.

Example 1

A cosmetic composition having a W/O type liquid foundation formulation with a composition as shown in Table 1 was prepared.

_{TiO 2} having a particle diameter of 0.3 μm to 0.5 μm is added to the aqueous phase hydrogenated lecithin together with POLYSORBATE 80, an emulsifier, and dispersed at a rotation speed of 30 m/s using a thin film rotating high-speed fill mixer. Thus, a cosmetic composition of a liquid foundation formulation comprising TiO2 pigment particles coated with an oil phase and an aqueous phase was prepared.

At this time, the _{content of the TiO 2} pigment particles was made to be 7% by weight based on the total weight of the cosmetic composition.

ingredient weight% pigment particles
_{(TiO 2} having a particle size of 0.3 μm to 0.5 μm) 7 emulsifier
(POLYSORBATE 80) One Awards
(HYDROGENATED LECITHIN) 0.5 Butylene Glycol 3 emulsifier
(cetyl sebum/ sebum-10/1 dimethicone) 3 pigment particles
(Iron oxide coated with dimethicone) 5.0 Dimethicone balance Cyclopentasiloxane and PEG/PPG-19/19 Dimethicone 5.0 Disteadimonium Hectorite 1.0 antiseptic appropriate amount Purified water balance

Example 2

It was carried out in the same manner as in Example 1, but _{the content of the TiO 2} pigment particles was 10% by weight based on the total weight of the cosmetic composition.

comparative example One

A cosmetic composition comprising _{TiO 2} pigment particles coated with an oil phase and an aqueous phase was prepared by using a ring mill instead of a thin film swirl type high-speed mixer.

comparative example 2

A cosmetic composition comprising _{TiO 2} pigment particles coated with an oil phase and an aqueous phase was prepared by using a ring mill instead of a thin film swirl type high-speed mixer.

Experimental example 1: Particle size distribution measurement

The cosmetic compositions of the liquid foundation formulations prepared in Example 1 and Comparative Example 1, respectively, were observed using a 3D laser microscope.

3 is a micrograph of the cosmetic composition prepared in Example 1 and Comparative Example 1, respectively.

Referring to FIG. 3 , in Example 1, particles having a large size were hardly observed (FIG. 3 (a)), whereas in Comparative Example 1, a large number of particles having a large size were observed (FIG. 3 (b)). From this, it can be seen that in the case of using a thin-film rotating high-speed mixer that disperses pigment particles by using the centrifugal force of a rotating dispersing device, the particle size distribution can be made more uniform than in the case of using a conventional ring mill.

Experimental example 2: Long-term stability experiments

In order to measure the viscosity over time for the cosmetic compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2, respectively, on the first day of viscosity measurement, the first day, the 7th day, and the third month from the first viscosity measurement date, each cosmetic composition The viscosity of the composition was measured, and the viscosity over time for 3 months was compared.

4 is a graph showing the measurement results of the viscosity over time for the cosmetic compositions of Examples 1 and 2 and Comparative Examples 1 and 2;

4 and Table 2 below, the cosmetic compositions prepared in Examples 1 and 2 each had a 3-month viscosity aging rate of about 96%, but in Comparative Example 2, a 3-month viscosity aging rate was about 74%, and the viscosity was Since it maintains the level of 20,000 cps, it is difficult to apply it to various formulations.

Unit: cps day 1 day 7 days 3 months viscosity aging rate Example 1 14450 cps 14000 cps 13800 cps 11200 cps 80% Example 2 14250 cps 13600 cps 13100 cps 13067 cps 96% Comparative Example 1 15050 cps 13550 cps 12650 cps 10133 cps 74% Comparative Example 2 21350 cps 20400 cps 20000 cps 16533 cps 81%

Experimental example 3: particle size distribution

The average particle size was observed by measuring the particle size distribution of the cosmetic compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2, respectively.

Table 3 below shows the average particle size of the cosmetic compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2, respectively. Examples 1 and 2 maintain a size similar to the particle size of the existing pigment even when the content of the pigment is increased, but in Comparative Examples 1 and 2, as the content of the pigment increases, the particles become larger than that of the conventional pigment. It is estimated that the pigment does not re-agglomerate and the size of the existing pigment is stably well maintained when the technique of the example is applied, whereas the comparative example, which is the prior art, is estimated to have increased in size as the pigments are agglomerated in the formulation.

pigment 0.59 μm Example 1 0.69 μm Example 2 0.628 μm Comparative Example 1 3.03 μm Comparative Example 2 12.9 μm

Experimental example 4: Sensory evaluation

A sensory evaluation was performed on the cosmetic compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2, respectively.

30 women aged 20 to 40 years were asked to use the cosmetic compositions prepared in Examples 1 and 2 and Comparative Examples 1 and 2, respectively, and evaluated for the first to fourth characteristics as follows, and the results were evaluated. 6 shows.

- 1st characteristic: smoothness, gloss, moisture, residual feeling, brittleness

- Second characteristic: thickness, stickiness, covering power

- 3rd characteristic: feeling of closeness

- 4th characteristic: spreadability

5 is a graph showing the results of sensory evaluation of the cosmetic compositions according to Examples 1 and 2 and Comparative Examples 1 and 2;

Referring to FIG. 5 , in the case of Examples 1 and 2, smoothness, gloss, moisture, residual feeling, and brittleness are all excellent. it can be seen that

Accordingly, it was confirmed that a cosmetic composition that can simultaneously implement moisture and coverage can be developed.

Hereinafter, another formulation example of the present invention will be described, but the formulation of a cosmetic composition comprising pigment particles coated with a coating layer comprising an oil phase and an aqueous phase according to the present invention is not limited to these examples.

Formulation example 1: Massage Cream

According to the composition of Table 4 below, a massage cream including a pigment coated with a coating layer comprising an oil phase and an aqueous phase of the present invention was prepared in a conventional manner.

ingredient weight% pigment particles
_{(TiO 2} having a particle size of 0.3 μm to 0.5 μm) 0.5 emulsifier
(POLYSORBATE 80) One Awards
(HYDROGENATED LECITHIN) 16.5 Icaricid B2 0.5 beeswax 10.0 Polysorbate 60 1.5 PEG 60 hydrogenated castor oil 2.0 Sorbitan sesquioleate 0.8 liquid paraffin 40.0 squalane 5.0 Caprylic/Capric Triglycerides 4.0 glycerin 5.0 butylene glycol 3.0 propylene glycol 3.0 triethanolamine 0.2 preservative, color, fragrance appropriate amount Purified water balance

Formulation example 2: Nourishing lotion

According to the composition of Table 5 below, a nutritional lotion containing a pigment coated with a coating layer comprising an oil phase and an aqueous phase of the present invention was prepared in a conventional manner.

ingredient weight% pigment particles
_{(TiO 2} having a particle size of 0.3 μm to 0.5 μm) 0.1 emulsifier
(POLYSORBATE 80) One Awards
(HYDROGENATED LECITHIN) 16.9 Alpha-ketoglutaric acid 1.0 niacinamide 1.0 beta-1,3-glucan 1.0 beeswax 4.0 polysorbate 1.5 Sorbitan sesquioleate 1.5 liquid paraffin 0.5 Caprylic/Capric Triglycerides 5.0 glycerin 3.0 butylene glycol 3.0 propylene glycol 3.0 Carboxyvinyl Polymer 0.1 triethanolamine 0.2 preservatives, fragrances 0.1 Purified water balance

Formulation example 3: pack

According to the composition of Table 6 below, a pack containing a pigment coated with a coating layer including an oil phase and an aqueous phase was prepared in a conventional manner.

ingredient weight% pigment particles
_{(TiO 2} having a particle size of 0.3 μm to 0.5 μm) 2 emulsifier
(POLYSORBATE 80) One Awards
(HYDROGENATED LECITHIN) 15 glycerin 4.0 polyvinyl alcohol 15.0 Hyaluronic Acid Extract 5.0 beta glucan 7.0 allantoin 0.1 nonylphenyl ether 0.4 Polysorbate 60 1.2 ethanol 6.0 Purified water balance

Formulation example 4: Ointment

According to the composition of Table 7 below, an ointment containing a pigment coated with a coating layer comprising an oil phase and an aqueous phase of the present invention was prepared in a conventional manner.

ingredient weight% pigment particles
_{(TiO 2} having a particle size of 0.3 μm to 0.5 μm) 2 emulsifier
(POLYSORBATE 80) One Awards
(HYDROGENATED LECITHIN) 15 Alpha-ketoglutaric acid 1.0 niacinamide 1.0 beta-1,3-glucan 10.0 beeswax 10.0 polysorbate 5.0 sebum 60 hydrogenated castor oil 2.0 Sorbitan sesquioleate 0.5 Vaseline 5.0 liquid paraffin 10.0 squalane 5.0 shea butter 3.0 Caprylic/Capric Triglycerides 5.0 glycerin 10.0 propylene glycol 10.2 triethanolamine 0.2 preservatives, fragrances 0.1 Purified water balance

Formulation example 5: Gel

According to the composition of Table 8 below, a gel containing a pigment coated with a coating layer including an oil phase and an aqueous phase was prepared in a conventional manner.

ingredient weight% pigment particles
_{(TiO 2} having a particle size of 0.3 μm to 0.5 μm) One emulsifier
(POLYSORBATE 80) One Awards
(HYDROGENATED LECITHIN) 16 panthenol 5.0 sea pine oil 0.01 Alpha-ketoglutaric acid 1.0 niacinamide 1.0 beta-1,3-glucan 0.1 Sodium ethylenediamine acetate 0.05 glycerin 5.0 Carboxyvinyl Polymer 0.3 ethanol 5.0 sebum 60 hydrogenated castor oil 0.5 triethanolamine 0.3 preservatives, fragrances 0.1 Purified water balance

1: Pigment comprising a coating layer containing an oil phase and an aqueous phase
10: pigment particles
20: single coating layer
30: double coating layer
30a: emulsion layer
30b: water layer

Claims (11)

A cosmetic composition comprising pigment particles coated with a coating layer comprising an oil phase and an aqueous phase,
The cosmetic composition comprises dispersing a pigment and an emulsifier in an aqueous phase, and dispersing it using a thin film vortex high-speed mixer dispersing device to form a coating layer comprising an oil phase and an aqueous phase on the surface of the pigment prepared by the method,
The content of the pigment is 1 to 10% by weight based on the total weight of the cosmetic composition,
The particle size of the pigment is 0.1 μm to 1 μm, cosmetic composition. delete According to claim 1,
The pigment is titanium dioxide (TiO ₂ ), micro titanium oxide (Micro TiO ₂ ), zinc oxide (ZnO), micro zinc oxide (Micro ZnO), iron oxide (iron oxide, FeO (II) Fe _{2 )} O ₃ (III), Fe ₃ O ₄ (IV)), aluminum oxide (alumina, Al ₂ O ₃ ), barium sulfate (BaSO ₃ ), silicon dioxide (silica, SiO ₂ ), talc, kaolin, cerium A cosmetic composition which is at least one inorganic pigment selected from the group consisting of sericite and mica. The method of claim 1,
The oil phase is a cosmetic composition comprising at least one selected from the group consisting of dimethicones, methicones, hydrogen dimethicones, caprylic silanes, and fluorine-based silicones. According to claim 1,
The aqueous phase is a cosmetic composition comprising at least one selected from the group consisting of lecithins and silicas. According to claim 1,
The coating layer is a cosmetic composition that is a single coating layer comprising a mixture of an oil phase and an aqueous phase. According to claim 1,
The coating layer is a cosmetic composition that is a double coating layer comprising an oil phase and an aqueous layer. According to claim 1,
The cosmetic composition is a cosmetic composition, characterized in that it is formulated in the form of water dispersion, oil dispersion, W / O (water in oil) or O / W (oil in water). According to claim 1,
The cosmetic composition is a cosmetic composition, characterized in that it is formulated in the form of liquid, cream or cake-type foundation, makeup base cosmetic, or UV-blocking cosmetic. A method for producing a cosmetic composition comprising dispersing a pigment and an emulsifier in an aqueous phase, and dispersing it using a thin film rotating high-speed mixer dispersing device, to form a coating layer comprising an oil phase and an aqueous phase on the surface of the pigment,
The content of the pigment is 1 to 10% by weight based on the total weight of the cosmetic composition,
The particle size of the pigment is 0.1 μm to 1 μm, a method for producing a cosmetic composition. 11. The method of claim 10,
The rotation speed of the dispersing device is 5 to 50 m / s Method for producing a cosmetic composition.

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