KR102453889B1 - emulsion cosmetic composition - Google Patents

Abstract

Disclosed herein is an emulsion cosmetic composition. In one embodiment, the cosmetic of the present invention comprising a powder, an oil phase, and an aqueous phase has formulation stabilization without the addition of an additional emulsifier, and it is characterized by optimal formulation stabilization through a combination of ceramide-coated inorganic powder and silicone oil. In addition, when it is applied to the skin, it exhibits excellent skin cover uniformity. Therefore, the cosmetic of the present invention has the advantage that it can be used as various base makeup cosmetics that require uniform coverage and formulation stabilization, such as foundation, BB cream, CC cream, and the like.

Description

Emulsion cosmetic composition

Disclosed herein is an emulsion cosmetic composition.

The purpose of cosmetics is to clean the body, make oneself beautiful and attractive, and prevent aging by protecting skin and hair from UV rays or dryness. Recently, due to the increase in social activities, the self-consciousness to actively express oneself is increasing, and the desire to use cosmetics to take care of one's own skin and keep it healthy is greatly increasing. At the same time, consumers' interest in the effects of various harmful substances on the skin due to environmental pollution and pollution is increasing. Accordingly, basic research and development for various types and formulations of hypoallergenic cosmetics with less skin irritation are being actively conducted by limiting the use of stimulants or raw materials or usage that can cause skin irritation. However, the formulation developed by the above method so far has limitations in the product itself, such as the feeling of use of the product is poor and the function itself pursued by each cosmetic using functional raw materials is not fully exhibited.

Specifically, representative substances that cause skin side effects include preservatives, emulsifiers, oils, and substances effective for skin improvement. In particular, an emulsifier having an amphiphilic structure that lowers the interfacial tension between the aqueous phase and the liquid phase tends to form micelles by solubilizing the skin lipids. , causing skin irritation and allergies.

However, since an amount of about 3-10% of the emulsifier is essential for product stability, there has been a lot of effort to minimize the use of the emulsifier or utilize a natural emulsifier with relatively little irritation during the manufacture of cosmetics. However, in this case, it is difficult to develop satisfactory products, such as unstable emulsification state, poor stability, severe change over time, and hardening of contents for a long time or at high temperature. In particular, in the case of natural emulsifiers such as lecithin, there was a problem that the utilization was somewhat lowered due to the problem of the raw material itself that the cost was high.

Accordingly, the present inventors were conducting research to prepare a material that can lead to formulation stabilization through emulsification without separately using an additional emulsifier, and a combination of ceramide-coated inorganic powder, an oil phase containing silicone oil, and an aqueous phase Through this, it was confirmed that excellent formulation stabilization can be achieved without separately adding an additional emulsifier, and the present invention was completed.

KR Registered Patent Publication No. 10-0912242

In one aspect, an object of the present invention is a powder; paid; And to provide an emulsion cosmetic composition comprising an aqueous phase, which is emulsified without the addition of a separate additional emulsifier.

In order to achieve the above object, in one aspect the present invention is a powder; paid; and an aqueous phase, wherein the powder includes an inorganic powder coated with ceramide, the oil phase includes a silicone oil, and the composition is emulsified without additional additional emulsifying agent It provides an emulsion cosmetic composition.

In one embodiment, the cosmetic of the present invention comprising a powder, an oil phase, and an aqueous phase has formulation stabilization without the addition of an additional emulsifier, and it is characterized by optimal formulation stabilization through a combination of ceramide-coated inorganic powder and silicone oil. In addition, when it is applied to the skin, it exhibits excellent skin cover uniformity. Therefore, as an embodiment, the cosmetic of the present invention has the advantage that it can be used as various base makeup cosmetics that require uniform coverage and formulation stabilization, such as foundation, BB cream, CC cream, and the like.

1 is a diagram schematically showing a series of steps for preparing the cosmetic (Examples 2 to 8) of the present invention.
2 is a view showing the results of confirming the pickering ability according to the coating type of the pigment of the cosmetic (Example 1) of the present invention.
3 is a road showing the results of confirming the formulation stability according to the coating type of the pigment of the cosmetic of the present invention, specifically, FIG. 3a is the result for Example 2, FIG. 3b is the result for Comparative Example 5, FIG. 3c is the comparative example Results for 6, FIG. 3D is a diagram showing the results for Comparative Example 7.
4 is a road showing the result of confirming the spreadability of the cosmetic (Example 2) of the present invention, specifically, FIG. 4a is a diagram showing the result of checking with the naked eye, and FIG. 4b is a graph graphing the result of FIG. 4a to be.
5 is a view showing the results of confirming the stability of the formulation according to the change in the ratio of the aqueous phase to the oil phase in the formulation using the cosmetic of the present invention (Examples 6 to 8).

In one aspect, the present invention provides a powder; paid; and an aqueous phase, wherein the powder includes an inorganic powder coated with ceramide, and the oil phase includes a silicone oil, and the composition is emulsified without additional additional emulsifier. It provides an emulsion cosmetic composition.

Hereinafter, it will be described in detail.

In the present specification, 'powder' is an aggregate of solid fine particles, ranging from fine powder to coarse powder, that is, an aggregate of particles having a particle diameter of 0.1 μm to 1 mm. For the purposes of the present invention, the powder may include a ceramide-coated inorganic powder.

The inorganic powder is preferably silica, talc, kaolin, mica, sericite titanium dioxide, titanium dioxide (TiO ₂ ), zinc oxide, calcium carbonate, barium sulfate, diatomaceous earth, magnesium carbonate, magnesium silicate, barium carbonate, boron nitride , hydroxyapatite, alumina, zirconium oxide, iron oxide, mica titanium, sodium borosilicate, calcium borosilicate or aluminum borosilicate, and thus, ceramide-coated TiO ₂ with the most preferred ceramide-coated inorganic powder can be used, but is not limited thereto.

The ceramide-coated inorganic powder is 5 or more, 6 or more, 7 or more, 8 or more, 9 or more, 10 or more, 11 or less, 12 or less, 13 or less, 14 or less, 15 or less, 16 or less, based on the total weight of the emulsion cosmetic composition. , 17 or less, 18 or less, 19 or less, or 20 or less by weight, preferably 8 to 18% by weight, most preferably 10 to 15% by weight, but is not limited thereto.

In the present specification, the 'oil phase' is referred to as the 'oil phase', and is a material that does not mix well with the aqueous phase, and may be oil that is liquid at room temperature and atmospheric pressure, an organic solvent, or a mixture thereof, preferably It contains silicone oil.

The silicone oil may be cyclopentasiloxane, octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane, dimethicone, phenyltrimethicone, polypetrylmethicone, methyltrimethicone or trisiloxane, but more preferably cyclopentasiloxane. It may be siloxane or polypetrylmethicone, and most preferably polypetrylmethicone, but is not limited thereto.

In addition, the silicone oil is 20 or more, 21 or more, 22 or more, 23 or more, 24 or more, 25 or more, 26 or more, 27 or more, 28 or more, 29 or more, 30 or more, 31 or less, based on the total weight of the emulsion cosmetic composition. 32 or less, 33 or less, 34 or less, 35 or less, 36 or less, 37 or less, 38 or less, 39 or less, 40 or less, 41 or less, 42 or less, 43 or less, 44 or less, 45 or less, 46 or less, 47 or less, 48 or less , 49 or less, 50 or less, 51 or less, 52 or less, 53 or less, 54 or less, or 55 or less by weight, preferably 23 to 53% by weight, more preferably 25 to 50% by weight, most Preferably it may be 25 to 31% by weight, but is not limited thereto.

In the present specification, 'water phase' is referred to as 'water phase', and as a material that does not mix well with the oil phase, it can be used without limitation as long as it can dissolve the nonionic water-soluble polymer well. For example, it may include purified water or distilled water, such as water, polyol, and the like.

The aqueous phase is 0.6 or more, 0.7 or more, 0.8 or more, 0.9 or more, 1.0 or more, 1.1 or more, 1.2 or more, 1.3 or more, 1.4 or more, 1.5 or more, 1.6 or more, 1.7 or more with respect to 100 parts by weight of the oil phase included in the emulsion cosmetic composition. It may be added in an amount of more than, 1.8 or less, or 1.9 or less, preferably 0.6 to 1.9 parts by weight, and more preferably 1.6 to 1.8 parts by weight, but is not limited thereto.

The polyol refers to a polyhydric alcohol, that is, an aliphatic compound having two or more hydroxyl groups (-OH). . Accordingly, in one embodiment, the polyol may be glycerin, butylene glycol, sorbitol, polyethylene glycol, polypropylene glycol, dipropylene glycol, propylene glycol, propanediol, ethyl hexanediol or pentylene glycol, Preferably, glycerin, but is not limited thereto.

When the polyol is added in an amount of more than a certain weight part, formulation destabilization such as pigment separation, viscosity drop, or room temperature water separation occurs. 3 or more, 4 or more, 5 or more, 6 or less, 7 or less, or It may be added in 8 parts by weight or less, preferably 4 to 6 parts by weight, and most preferably 5 parts by weight, but is not limited thereto.

As used herein, 'emulsion' refers to a liquid in an emulsified state, which is a liquid at room temperature and includes at least two liquid phases that are immiscible with each other. Accordingly, the cosmetic composition of the present invention may be a water-in-oil type, which is one type of emulsion, but is not limited thereto. The 'water-in-oil type' means that water is the inner phase and oil is the outer phase, and the aqueous phase is dispersed in the oil phase, also referred to as w/o type.

In the present specification, 'cosmetic composition' is a concept including all substances that beautify the appearance of the human body, and the cosmetic composition of the present invention refers to a substance that makes the appearance of the human body beautiful without adding an additional emulsifier in the form of an emulsion. concept, but is not limited thereto.

Accordingly, as can be seen in Experimental Example 4 below, in the cosmetic composition in one embodiment, the formulation becomes unstable due to the addition of an additional emulsifier, and the emulsification occurs sufficiently without the addition of an emulsifier that causes skin irritation. It can be useful.

In addition, in one embodiment, the cosmetic composition has excellent application uniformity in skin application, as can be seen in Experimental Example 6 below.

The cosmetic composition may be a base makeup cosmetic composition, and more preferably a makeup base, liquid foundation, solid foundation, BB cream, CC cream, sun block lotion or sun block cream, but is not limited thereto.

The cosmetic composition may further include conventional adjuvants and carriers such as thickeners, antioxidants, stabilizers, solubilizers, vitamins, fragrances, and the like, which are commonly used in cosmetic compositions in addition to the powder, oil phase and aqueous phase. For example, in the cosmetic composition, auxiliary ingredients such as bentone 38VCG, glycerin, butylene glycol, polyoxyethylene hydrogenated castor oil, tocopheryl acetate, citric acid, panthenol, squalane, sodium citrate, and allantoin are further added may be included.

Redundant content is omitted in consideration of the complexity of the present specification, and terms not defined otherwise in the present specification have the meanings commonly used in the art to which the present invention pertains.

Hereinafter, examples and experimental examples will be described in detail to help the understanding of the present invention. However, the following Examples and Experimental Examples are merely illustrative of the contents of the present invention, and the scope of the present invention is not limited to the following Examples and Experimental Examples.

In addition, the comparative examples described below are those described for comparison with the examples, and are not described as prior art.

Examples 1 to and Comparative Examples 1 to 4. Preparation of cosmetics-1

Cosmetics of Examples 1 and Comparative Examples 1 to 4 were prepared with the composition shown in Table 1 below (unit: wt%). First, for oil dispersion, X-Cera TiO ₂ R250 (DAITO KASEI), an inorganic powder coated with ceramide, was added to phenyl trimethicone, a volatile silicone oil, and stirred at 6000 rpm for 10 minutes. . After adding water and sodium trichloride (NaCl), the mixture was stirred at 6000 rpm for 10 minutes, and then transferred to a container with a stopper. As a result, the cosmetic of Example 1 was prepared. The above series of procedures was performed using a homogenizer at room temperature (50° C. or less).

In addition, cosmetics of Comparative Examples 1 to 3 were prepared in the same manner as that of Example 1, except that an inorganic powder having a different coating type was used instead of X-Cera TiO ₂ R250.

In addition, a cosmetic of Comparative Example 4 was prepared in the same manner as that of Example 1, except that the type of oil used in the oil phase component was changed instead of phenyl trimethicone.

At this time, TITANIUM DIOXIDE (CI 77891) * ALUMINUM HYDROXIDE * TRIETHOXYCAPRYLYLSILANE (DAITO) was used for the alkylsilane-coated powder shown in Table 1, and TITANIUM DIOXIDE (CI 77891, LCW FRANCE) was used for the uncoated powder. , Glutamate-coated powder was TITANIUM DIOXIDE (CI 77891) * ALUMINUM HYDROXIDE * DISODIUM STEAROYL GLUTAMATE (Miyoshi Kasei) was used.

ingredient Raw material name Example 1 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 oily ingredients Phenyl Trimethicone 50 50 50 50 Cetyl Ethylhexanoate 50 inorganic powder Ceramide coating 10 10 Alkylsilane coating
(lipophilic) 10 coating x 10 glutamate coating
(hydrophilic) 10 award-winning ingredients water 39 39 39 39 39 Sodium trichloride (NaCl) One One One One One Award/Paid Ratio - 0.8 0.8 0.8 0.8 0.8

Example 2 and Comparative Examples 5 to 7. Preparation of cosmetics-2

Cosmetics of Examples 3 and Comparative Examples 5 to 7 were prepared with the composition shown in Table 2 below (unit: wt%). First, for oil dispersion, volatile silicone oil, cyclopentasiloxane, and phenyl trimethicone, and OMC (ETHYLHEXYL METHOXYCINNAMATE) were mixed and stirred at 4000 rpm for 5 minutes. In turn, Benton 38VCG as a thickener and X-Cera TiO ₂ R250, an inorganic powder coated with ceramide, were added, and the mixture was stirred at 6000 rpm for 10 minutes each time each material was added. After adding water, EDTA-2Na, sodium trichloride and glycerine, the mixture was stirred at 6000 rpm for 10 minutes and then transferred to a container with a stopper. As a result, the cosmetic of Example 2 was prepared. The above series of procedures was performed using a homogenizer at room temperature (50 °C or less), and the progress of each step is schematically shown in FIG. 1 .

In addition, cosmetics of Comparative Examples 5 to 7 were prepared in the same manner as that of Example 2, except that the inorganic powder having a different coating type was used instead of X-Cera TiO ₂ R250.

At this time, TITANIUM DIOXIDE (CI 77891) * ALUMINUM HYDROXIDE * TRIETHOXYCAPRYLYLSILANE (DAITO) was used for the alkylsilane-coated powder shown in Table 2, and TITANIUM DIOXIDE (CI 77891, LCW FRANCE) was used for the uncoated powder. , Glutamate-coated powder was TITANIUM DIOXIDE (CI 77891) * ALUMINUM HYDROXIDE * DISODIUM STEAROYL GLUTAMATE (Miyoshi Kasei) was used.

ingredient Raw material name Example 2 Comparative Example 5 Comparative Example 6 Comparative Example 7 oily ingredients Phenyl Trimethicone 12.00 12.00 12.00 12.00 Cyclopentasiloxane 13.00 13.00 13.00 13.00 OMC 6.50 6.50 6.50 6.50 thickener Benton 38VCG 1.20 1.20 1.20 1.20 inorganic powder Ceramide coating 15.00 Alkylsilane coating
(lipophilic) 15.00 coating x 15.00 glutamate coating
(hydrophilic) 15.00 award-winning ingredients water 46.25 46.25 46.25 46.25 EDTA-2Na+ 0.05 0.05 0.05 0.05 Sodium trichloride (NaCl) 1.00 1.00 1.00 1.00 glycerin 5.00 5.00 5.00 5.00 Award/Paid Ratio - about 1.66 about 1.66 about 1.66 about 1.66

Examples 3 to 5. Preparation of makeup cosmetics-3

Cosmetics of Examples 3 to 5 were prepared with the composition shown in Table 3 below (unit: wt%).

Specifically, the cosmetic of Example 3 was prepared by further adding an emulsifier to the material of Example 2.

In addition, the cosmetics of Examples 4 and 5 were prepared by increasing the amount of glycerin or butylene glycol, which is a polyol, to the material of Example 2.

ingredient Raw material name Example 2 Example 3 Example 4 Example 5 oily ingredients Phenyl Trimethicone 12.00 12.00 12.00 12.00 Cyclopentasiloxane 13.00 13.00 13.00 13.00 OMC 6.50 6.50 6.50 6.50 thickener Benton 38VCG 1.20 1.20 1.20 1.20 emulsifier Cetyl PEG/PPG-10/1 Dimethicone 0.15 Dimethicone/PEG-10/15 crosspolymer*cyclopentasiloxane 1.5 inorganic powder X-Cera TiO ₂ R250 15.00 15.00 15.00 15.00 award-winning ingredients water 46.25 44.6 41.25 41.25 EDTA-2Na+ 0.05 0.05 0.05 0.05 Sodium trichloride (NaCl) 1.00 1.00 1.00 1.00 glycerin 5.00 5.00 5.00 10.00 Butylene Glycol 5.00 Award/Paid Ratio - about 1.66 about 1.60 about 1.66 about 1.66

Examples 6 to 8. Preparation of cosmetics-4

Cosmetics of Examples 6 to 8 were prepared with the composition shown in Table 4 (unit: wt%). First, phenyl trimethicone, a volatile silicone oil, was mixed for oil dispersion and stirred at 4000 rpm for 5 minutes. In turn, Benton 38VCG as a thickener and X-Cera TiO ₂ R250, an inorganic powder coated with ceramide, were added, and the mixture was stirred at 6000 rpm for 10 minutes each time each material was added. After adding water and sodium trichloride, the mixture was stirred at 6000 rpm for 10 minutes, and then immediately transferred to a container with a stopper. As a result, cosmetics of Examples 6 to 8 were prepared, respectively. The above series of procedures was carried out using a homogenizer at room temperature (50 °C or less).

Examples 6 to 8 are cosmetics prepared by changing the composition of the substances added to each other, but the addition ratio of the oil phase and the aqueous phase, in particular, the addition ratio of phenyl trimethicone and water.

ingredient Raw material name Example 6 Example 7 Example 8 paid Phenyl Trimethicone 50.00 40.00 30.00 thickener Benton 38VCG 1.20 1.20 1.20 inorganic powder X-Cera TiO ₂ R250 15.00 15.00 15.00 Awards water 32.8 42.8 52.8 Sodium trichloride (NaCl) 1.00 1.00 1.00 Award/Paid Ratio - 0.68 1.1 1.79

Experimental Example 1. Confirmation of pickering ability according to the type of oil using the cosmetics of Example 1 and Comparative Example 4

In order to confirm the formulation stability of Example 1 and Comparative Example 4 of the present invention without the addition of an emulsifier, the pickering degree of each prepared cosmetic was visually confirmed. In Example 1 and Comparative Example 4, the type of oil used was different.

Through the above experimental results, it was confirmed that the cosmetic of Example 1 prepared using phenyl trimethicone, which is a silicone oil, had sufficient pickering to ensure that the formulation was stable. However, it was confirmed that the cosmetic of Comparative Example 4 prepared using the ester oil, cetyl ethyl hexanoate, did not undergo sufficient pickering because emulsification hardly occurred, and as a result, it was confirmed that a very unstable formulation was prepared.

This indicates that silicone oil can produce emulsification through interaction with other constituents to prepare a cosmetic with a stabilized formulation.

Experimental Example 2. Checking the pickering ability according to the coating type of the powder using the cosmetics of Examples 1 and Comparative Examples 1 to 3

In order to confirm the formulation stability of Example 1 and Comparative Examples 1 to 3, which are the makeup cosmetics of the present invention without the addition of an emulsifier, the pickering degree of each prepared cosmetic was visually confirmed. In Example 1 and Comparative Examples 1 to 3, the coating type of the powder used was different. The results are shown in FIG. 2 .

As shown in FIG. 2 , it was confirmed that the cosmetic of Example 1 had sufficient pickering to ensure that the formulation was stable. However, it was confirmed that the cosmetic of Comparative Examples 1 and 3 did not sufficiently pickling and that the hydrophilic component and the lipophilic component were hardly mixed. Oily ingredients were not mixed sufficiently.

This indicates that among the powders, the inorganic powder coated with ceramide generates emulsification through interaction with other constituent materials, thereby producing a cosmetic with a stabilized formulation.

Experimental Example 3. Confirmation of formulation stability according to the coating type of the powder using the cosmetics of Example 2 and Comparative Examples 5 to 7

In Example 2, in order to confirm the applicability of the cosmetic of Example 1 as a foundation, BB cream, etc., the core configuration of Example 1 is maintained and ingredients that can be additionally added to the cosmetic composition are further added. Accordingly, the formulation stability of Example 2 and the formulation stability of Comparative Examples 5 to 7 in which only the powder coating type was changed were confirmed. Formulation stability was observed with the naked eye after each cosmetic was prepared in the manner described above and left at room temperature for 6 months. The results are shown in FIG. 3 .

As shown in FIG. 3 , the cosmetic of Example 2 showed medium-sized Pickering particles and excellent formulation stability ( FIG. 3a ). However, it was confirmed that the cosmetic of Comparative Example 5 had too large particles after pickering (FIG. 3b), and that the cosmetic of Comparative Example 6 did not sufficiently pickering in the form of powder agglomeration (FIG. 3C). In addition, in the cosmetic of Comparative Example 7, although the particles themselves were small, it was confirmed that agglomeration occurred between the Pickering particles ( FIG. 3D ). That is, it was confirmed that the formulations of the cosmetics of Comparative Examples 5 to 7 were not stabilized and were prepared in an unstable state.

This indicates that the cosmetic of Example 2, which has a basic composition of silicone oil and ceramide-coated inorganic powder, can be used as a cosmetic composition of various formulations through excellent formulation stability without additional addition of an emulsifier.

Experimental Example 4. Confirmation of formulation stability change according to the addition of an additional emulsion using the cosmetics of Examples 2 and 3

As confirmed in Experimental Example 3, the cosmetic of Example 2 is a material that stabilizes the formulation without the addition of an additional emulsifier, and the auxiliary emulsifiers cetyl PEG/PPG-10/1 dimethicone and dimethicone/PEG-10/15 It was checked whether crosspolymer * cyclopentasiloxane was further added, still showing formulation stabilization or better formulation stabilization. For this purpose, the formulations of Example 2 and Example 3 stored in a container were visually compared and observed.

As a result, the cosmetic of Example 2 showed medium-sized Pickering particles and showed excellent formulation stability, but it was confirmed that the cosmetic of Example 3 caused formulation instability due to pigment separation and viscosity drop by the addition of an auxiliary emulsifier. did. This supports that the cosmetic of the present invention has excellent formulation stabilization properties by the combination of each component based on silicone oil and ceramide-coated inorganic powder.

Experimental Example 5. Confirmation of the occurrence of additional formulation stability according to the increase of the polyol using the cosmetics of Examples 2, 4 and 5

As confirmed in Experimental Example 3, the cosmetic of Example 2 is a material that exhibits formulation stabilization without adding an additional emulsifier, and even when glycerin or butylene glycol, which is a polyol that imparts resistance to cooling conditions, is additionally added, the formulation is still It was checked whether stabilization was seen. For this purpose, the formulations of Examples 2, 4 and 5 stored in the container were visually compared and observed.

As a result, the cosmetic of Example 2 showed medium-sized Pickering particles and showed excellent formulation stability, but the cosmetics of Examples 4 and 5, which increased the amount of polyol that contributed to the increase in preservative power, separated color, decreased viscosity, and separated water at room temperature. It was confirmed that the relative destabilization of the formulation occurred. This indicates that the cosmetic of the present invention is one of the important factors contributing to formulation stability in addition to the combination of each component based on silicone oil and ceramide-coated inorganic powder as well as the addition ratio of each component.

Experimental Example 6. Confirmation of uniformity of application to the cosmetic of Example 2

When the cosmetic of the present invention was applied to the skin, the uniformity of the application was confirmed. The experiment was performed on female subjects. Specifically, after washing with the cleansing foam, it was waited for 15 minutes under constant temperature and constant humidity conditions, and after the skin was stabilized, the subject's face was divided into left and right, and Example 2 was applied in an amount of 50 μl. After that, the subject's front was photographed in Standard 2 mode of the Visia-CR device. The results are shown in Figure 4a.

Then, the taken pictures were analyzed with the Image pro plus program (Media Cyvernetics). Specifically, the intensity, hue, and saturation values were obtained after setting the same area of the cheek including the cheekbones as AOI (Area of Interest). Among them, the standard deviation value of the brightness for the AOI region was calculated based on the intensity value indicating the brightness, and this is shown in FIG. 4B .

At this time, as a control, NAI-TSR-10, a material frequently used as a pigment, was used. NAI-TSR-10 is an inorganic powder coated with glutamate, and it is one of the cover powders frequently used as a foundation material.

As shown in FIG. 4 , it was confirmed that the cosmetic of Example 2 of the present invention was spread evenly on the skin, which can be more clearly confirmed in FIG. 4b , which is digitized as a color deviation value. This indicates that the cosmetic of the present invention not only has formulation stability, but also has a low color deviation value, indicating that it is a material suitable for commercialization as a base makeup cosmetic.

Experimental Example 7. Confirmation of formulation stability change according to the change in the ratio of the aqueous phase to the oil phase in the formulation using the cosmetics of Examples 6 to 8

The change in weight ratio of each component in the cosmetic of the present invention, in particular, the change in formulation stability according to the change in the ratio between the oil phase and the aqueous phase was confirmed. For this purpose, Examples 6 to 8 prepared in the manner described above were left at 55° C. for 3 days and then visually observed. The results are shown in FIG. 5 .

As shown in Figure 5, as the content of the oil phase decreased in the order of Examples 6, 7 and 8, the manufacturing viscosity increased from 5900 cps to 30500 cps and 140000 cps, it was confirmed that formulation stability was also increased. That is, it was confirmed that the formulation was most stable when the ratio of the aqueous phase/oil phase was 1.79. This indicates that the aqueous phase/oil phase ratio contained in the cosmetic composition of the present invention may be 0.6 to 1.9, and particularly, when it is 1.4 to 1.8, optimum formulation stability is exhibited.

Overall, in one embodiment, the cosmetic of the present invention, including powder, oil, and aqueous phase, has formulation stabilization without the addition of an additional emulsifier. characteristic. In addition, when it is applied to the skin, it exhibits excellent skin cover uniformity. Therefore, as an embodiment, the cosmetic of the present invention has the advantage that it can be used as various base makeup cosmetics that require uniform coverage and formulation stabilization, such as foundation, BB cream, CC cream, and the like.

Claims (12)

powder;
paid; and
including awards,
The powder includes an inorganic powder coated with ceramide,
The oil phase is to include silicone oil,
The composition is emulsified without the addition of a separate additional emulsifier, emulsion cosmetic composition. According to claim 1,
The inorganic powder is silica, talc, kaolin, mica, sericite titanium dioxide, titanium dioxide (TiO ₂ ), zinc oxide, calcium carbonate, barium sulfate, diatomaceous earth, magnesium carbonate, magnesium silicate, barium carbonate, boron nitride, hydroxy An emulsion cosmetic composition, characterized in that at least one selected from the group consisting of apatite, alumina, zirconium oxide, iron oxide, mica titanium, sodium borosilicate, calcium borosilicate and aluminum borosilicate. According to claim 1,
The ceramide-coated inorganic powder is an emulsion cosmetic composition, characterized in that it is added in an amount of 5 to 20% by weight based on the total weight of the composition. According to claim 1,
The silicone oil is at least one oil selected from the group consisting of cyclopentasiloxane, octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane, dimethicone, phenyltrimethicone, polypetrylmethicone, methyltrimethicone and trisiloxane. Characterized in the emulsion cosmetic composition. According to claim 1,
The silicone oil is an emulsion cosmetic composition, characterized in that it is added in an amount of 20 to 55% by weight based on the total weight of the composition. According to claim 1,
The emulsion cosmetic composition, characterized in that the aqueous phase is added in an amount of 0.6 to 1.9 parts by weight based on 100 parts by weight of the oil phase. According to claim 1,
The aqueous phase is characterized in that it comprises a polyol, emulsion cosmetic composition. 8. The method of claim 7,
The polyol is characterized in that at least one selected from the group consisting of glycerin, butylene glycol, sorbitol, polyethylene glycol, polypropylene glycol, dipropylene glycol, propylene glycol, propanediol, ethyl hexanediol and pentylene glycol , emulsion cosmetic composition. 8. The method of claim 7,
The polyol is an emulsion cosmetic composition, characterized in that it is added in an amount of 3 to 8% by weight based on the total weight of the composition. According to claim 1,
The cosmetic composition is an emulsion cosmetic composition, characterized in that the water-in-oil type. According to claim 1,
The cosmetic composition is an emulsion cosmetic composition, characterized in that the base makeup cosmetic composition. 12. The method of claim 11,
The base makeup cosmetic is an emulsion cosmetic composition, characterized in that at least one formulation selected from the group consisting of a makeup base, liquid foundation, solid foundation, BB cream, CC cream, sun block lotion, and sun block cream.

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