KR102574547B1 - Water-drop macro emulsion cosmetic composition stably containing inorganic powder and manufacturing method of the same - Google Patents

Abstract

The present invention relates to a water drop macro emulsion cosmetic composition and a method for producing the same. The water drop macro emulsion cosmetic composition according to one aspect stably contains a high content of inorganic powder and has an excellent water-drop effect that immediately releases moisture when applied to the skin, making it useful for various cosmetics. do.

Description

Water-drop macro emulsion cosmetic composition stably containing inorganic powder and manufacturing method thereof {Water-drop macro emulsion cosmetic composition stably containing inorganic powder and manufacturing method of the same}

The present invention relates to a water drop macro emulsion cosmetic composition and a method for producing the same.

In general, emulsified color cosmetic compositions have an oil-in-water (O/W) type and a water-in-oil (W/O) type emulsion form. Water-based oils are the most widely used as general cosmetic compositions because they are water-based, have a high moisture content, are light, and are easy to manufacture. However, color cosmetics have poor water resistance, are sticky due to thickeners, and in some cases, may cause skin irritation due to emulsifiers. There is a downside. On the other hand, the water-in-oil type is oil-based and has excellent makeup longevity and water resistance, but has the disadvantage of feeling heavy after use and lacking a refreshing moisture feeling due to stuffy oils or waxes.

In order to solve the above problems, there is a need for a water-in-oil type macro emulsion cosmetic with high water resistance, and research has been conducted on this. However, conventional high-function water-drop or macro emulsion type cosmetic compositions are based on the principle of forming water drops by destabilizing the interface with a small emulsifier content, and due to the instability of the water-in-oil type formulation, they can be dissolved within a short period of time. Not only can the separation of the formulation be observed, but the instability of the formulation becomes even greater when highly polar organic UV blocking ingredients are contained. In addition, due to the relatively small external content, it is difficult to contain a large amount of powder and cannot achieve proper dispersion stability. There were limitations in applying macro emulsion type cosmetic compositions to makeup formulations due to the lack of temperature stabilization or UV protection effect.

Therefore, there is a need for the development of a macro emulsion cosmetic composition that ensures stability according to temperature changes, has excellent water bursting effect, and stably contains powder.

One aspect includes an oil phase comprising 1 to 10 parts by weight of an emulsifiable silicone elastomer and a polyglycerin-based silicone dispersant, and 0.1 to 5 parts by weight of a thickener; and

To provide a water drop macro emulsion cosmetic composition comprising an aqueous phase containing 1 to 30 parts by weight of inorganic powder and 1 to 30 parts by weight of polyol.

Another aspect is a method for producing a water drop macro emulsion cosmetic composition,

1) Forming an oil phase by mixing an emulsifiable silicone elastomer, a polyglycerin-based silicone dispersant, and a thickener;

2) adding polyol to the oil phase to emulsify it;

3) mixing and dispersing inorganic powder in the oil phase-polyol mixture; and

4) To provide a method for producing a water drop macro emulsion cosmetic composition comprising the step of adding purified water and an aqueous phase containing polyol to the oil phase-polyol-inorganic powder mixture.

Other objects and advantages of the present application will become clearer from the following detailed description together with the appended claims and drawings. Contents not described in this specification can be fully recognized and inferred by a person skilled in the technical field of this application or a similar technical field, so description thereof is omitted.

Each description and embodiment disclosed in this application can also be applied to each other description and embodiment. That is, all combinations of the various elements disclosed in this application fall within the scope of this application. Additionally, the scope of the present application cannot be considered limited by the specific description described below.

One aspect includes an oil phase comprising 1 to 10 parts by weight of an emulsifiable silicone elastomer and a polyglycerin-based silicone dispersant, and 0.1 to 5 parts by weight of a thickener; and

Provided is a water drop macro emulsion cosmetic composition comprising an aqueous phase containing 1 to 30 parts by weight of inorganic powder and 1 to 30 parts by weight of polyol.

In one embodiment, the emulsifiable silicone elastomer is dimethicone/PEG-10/15 cross polymer, PEG-15/lauryl dimethicone cross polymer, PEG-15/lauryl polydimethyl siloxy A group consisting of ethyl dimethicone, dimethicone/polyglycerin-3 crosspolymer, lauryl dimethicone/polyglycerin-3 crosspolymer, and polyglycerin-3/laurylpolydimethylsiloxyethyl-dimethicone. It may be one or more selected from the group consisting of lauryl dimethicone/polyglycerin-3 crosspolymer, but is not limited thereto.

The emulsifiable silicone elastomer may be lauryl dimethicone/polyglycerin-3 crosspolymer, which is a crosslinked emulsifiable silicone elastomer.

In one embodiment, the polyglycerin-based silicone dispersant is polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 polydimethylsiloxyethyl dimethicone, and lauryl polyglyceryl-3 polydimethyl. It may be one or more selected from the group consisting of siloxyethyldimethicone, preferably polyglyceryl-3 polydimethylsiloxyethyldimethicone, which has excellent adsorption properties on the pigment surface, but is limited thereto. no.

The polyglycerin-based silicone dispersant may be a branched polyglycerin-based silicone emulsifier or a dispersant, polyglyceryl-3 polydimethylsiloxyethyldimethicone.

In one embodiment, the emulsifiable silicone elastomer and polyglycerin-based silicone dispersant are not limited thereto, but may be included in an amount of 1 to 10 parts by weight, preferably 2 to 7 parts by weight, based on 100 parts by weight of the composition. , more preferably 3 to 5 parts by weight.

Specifically, the emulsifiable silicone elastomer may be included in an amount of 0.1 to 8 parts by weight, preferably 1 to 5 parts by weight, and more preferably 2 to 4 parts by weight, based on 100 parts by weight of the composition. It is not limited. Additionally, the polyglycerin-based silicone dispersant may be included in an amount of 0.1 to 2 parts by weight, preferably 0.5 to 1 part by weight, based on 100 parts by weight of the composition, but is not limited thereto. If the polyglycerin-based silicone dispersant is included in an amount of more than 1 part by weight based on 100 parts by weight of the composition, there may be a problem in that water drops are not formed well and the water bursting effect is reduced.

In one embodiment, the emulsifiable silicone elastomer and the polyglycerin-based silicone dispersant may be mixed in an optimal ratio (weight ratio). For example, the silicone elastomer and the polyglycerin-based silicone dispersant may be mixed at a weight ratio of 1:0.03 to 0.5, preferably 1:0.08 to 0.4, and more preferably 1:0.1. It can be mixed at a weight ratio of 0.3 to 0.3. In one embodiment, it was confirmed that the mixing ratio can affect the feeling of use, including the formulation stability, UV protection index, and water drop effect of the manufactured cosmetic composition.

In one embodiment, the thickener may be at least one selected from the group consisting of a hectorite-based compound and silicone resin powder.

The hectorite-based compound may be one or more selected from the group consisting of disteadimonium hectorite, stearalkonium hectorite, and quaternium-18 hectorite, but is not limited thereto.

The silicone resin powder includes vinyl dimethicone/methicone silsesquioxane crosspolymer, diphenyldimethicone/vinyldiphenyldimethicone/silsesquioxane crosspolymer, polysilicon-1 crosspolymer, and polysilicon-1 crosspolymer. It may be one or more selected from the group consisting of 22, but is not limited thereto.

In one embodiment, the thickener may be a mixture of a hectorite-based compound and silicone resin powder. For example, the thickener is a hectorite-based compound called Disteardimonium Hectorite, and a silicone resin powder is called Vinyl Dimethicone/Methicone Silsesquioxane Crosspolymer. It may be a mixture of, but is not limited to this. When using both the hectorite-based compound and the silicone resin powder, a water drop macro emulsion cosmetic composition with improved dispersibility and formulation stability can be formed by controlling the viscosity.

In one embodiment, the inorganic powder may be any one selected from the group consisting of inorganic sunscreens and pigments.

The inorganic sunscreen may be one or more selected from the group consisting of titanium dioxide and zinc oxide, but is not limited thereto.

The pigment may be one or more selected from the group consisting of yellow iron oxide, red iron oxide, black iron oxide, and silica, but is not limited thereto.

In one embodiment, the inorganic powder may be included in an amount of 1 to 30 parts by weight, preferably 5 to 25 parts by weight, based on 100 parts by weight of the composition, but is not limited thereto. Specifically, the inorganic sunscreen in the inorganic powder is not limited thereto, but may be included in an amount of 1 to 20 parts by weight, preferably 5 to 15 parts by weight, and more preferably 10 to 10 parts by weight, based on 100 parts by weight of the composition. It may be included in 15 parts by weight. In addition, the pigment in the inorganic powder is not limited thereto, but may be included in an amount of 1 to 10 parts by weight, preferably 3 to 8 parts by weight, and more preferably 4 to 6 parts by weight, based on 100 parts by weight of the composition. You can.

In one embodiment, the inorganic powder may be a mixture of titanium dioxide, which is an inorganic sunscreen, and zinc oxide. Meanwhile, in the cosmetic composition according to one aspect, an organic sunscreen such as ethylhexyl methoxycinnamate, octyl methoxycinnamate, ethylhexyl salicylate, homosaliate, benzophenone-3, or avobenzone is used instead of an inorganic sunscreen. When used, there may be problems with formulation stability due to high polarity.

As used herein, the term “polyol” may refer to a polyhydric alcohol, that is, an aliphatic compound having two or more hydroxyl groups (-OH). Those with two hydroxyl groups are called glycol or diol, those with three hydroxyl groups are called glycerin, and those with four hydroxyl groups are called pentaerythritol. The polyol may be one or more selected from the group consisting of glycerin, butylene glycol, propanediol, dipropylene glycol, and pentylene glycol, and preferably one selected from the group consisting of glycerin and propanediol. It may be more than this, and more preferably may be a mixture of glycerin and propanediol, but is not limited thereto.

In one embodiment, the polyol may be included in an amount of 5 to 20 parts by weight, preferably 8 to 20 parts by weight, more preferably 10 to 20 parts by weight, based on 100 parts by weight of the composition. More preferably, it may be included in 12 to 20 parts by weight, but is not limited thereto.

If it is outside the above range, the polyol content is too low and does not exhibit significant formulation properties in terms of fluidity, viscosity, and elasticity, and when applied to the skin, it may clump together, resulting in a poor feeling of use. In addition, if it is outside the above range, the polyol content may be too high, resulting in poor dispersion and formulation stability, and slow drying speed.

The cosmetic composition according to one aspect may further include oil in the oil phase. The oil may be an ester oil such as cetyl ethylhexanoate or ethylhexyl palmitate; Hydrocarbon-based oils such as hydrogenated polyisobutene; It may include silicone oils such as dimethicone, caprylylmethicone, diphenylsiloxyphenyltrimethicone, and mixtures thereof, but is not limited thereto. In one embodiment, the cosmetic composition may further include 1 to 40 parts by weight, preferably 10 to 30 parts by weight, of silicone oil in the oil phase based on 100 parts by weight of the composition.

The cosmetic composition according to one aspect may further include purified water and other additives in the aqueous phase.

In addition, the cosmetic composition may further include ingredients commonly used in cosmetic compositions, such as surfactants, pH adjusters, colorants, fragrances, pigments, preservatives, disinfectants, thickeners, antioxidants, stabilizers, and solubilizers. Various additives such as topicals, metal ion sequestrants, fresheners, deodorants, emulsifiers, solubilizers, moisturizers, ultraviolet absorbers, ultraviolet scattering agents, vitamins, plant extracts, skin astringents, anti-inflammatory agents, cell revitalizers, vasodilators, blood circulation promoters. , auxiliaries such as skin function enhancers, or carriers, etc., and the formulation and added ingredients are not limited thereto.

A person skilled in the art will be able to select any additional ingredients and/or their amounts such that the advantageous properties of the compositions according to the present disclosure are not or substantially not adversely affected by the envisaged additions.

The cosmetic composition is not particularly limited in its formulation, and may include cosmetic composition mixing components commonly used in the technical field to which the invention belongs, depending on the formulation to be manufactured. The cosmetic composition may be formulated, for example, as a liquid product, lotion, essence, cream, sun lotion, sunscreen, makeup base, foundation, BB cream, stick product, or balm type product, but is limited thereto. It doesn't work. In addition, depending on the formulation to be manufactured, additional oils, water, surfactants, moisturizers, lower alcohols, thickeners, chelating agents, preservatives, fragrances, etc. can be selected and added. It may also include sunscreen, light scattering agent, etc., and its formulation and added ingredients are not limited to the above.

Additionally, in each type of cosmetic composition, appropriate ingredients can be selected and mixed depending on the formulation or purpose of use of the cosmetic. Since the mixing ingredients and methods may be in accordance with conventional techniques, detailed descriptions thereof are omitted in this specification.

Another aspect is a method for producing a water drop macro emulsion cosmetic composition,

1) Forming an oil phase by mixing an emulsifiable silicone elastomer, a polyglycerin-based silicone dispersant, and a thickener;

2) adding polyol to the oil phase to emulsify it;

3) mixing and dispersing inorganic powder in the oil phase-polyol mixture; and

4) It provides a method for producing a water drop macro emulsion cosmetic composition comprising the step of adding purified water and an aqueous phase containing polyol to the oil phase-polyol-inorganic powder mixture.

Each of the oil phase, oil phase-polyol mixture, and oil phase-polyol-inorganic powder mixture can be prepared using any stirring or mixing method known in the art without limitation, for example, using a homo mixer at a temperature of 50 degrees Celsius. It may be performed at a temperature of 80° C. to 80° C. and a speed of 500 to 7000 rpm for 1 to 30 minutes. Preferably, the speed may be gradually increased as each step is repeated.

The polyol in step 2) may be prepared by pre-mixing some of the polyols included in the entire composition. In one embodiment, it was confirmed that the spreadability was poor when the cosmetic composition was manufactured without the pre-mixing step of the polyol, and it was confirmed that the spreadability and color uniformity of the cosmetic composition could be improved according to the pre-mixing step of some of the polyols, The manufacturing process was established.

In addition, step 2) may be pre-mixing the oil phase prepared in step 1) with a polyol having a weight ratio of 1:0.1 to 0.3 with respect to the entire water phase included in the composition according to one aspect. For example, assuming that the aqueous phase included in 100 parts by weight of the cosmetic composition according to one aspect is 50 parts by weight, and the polyol contained in the 50 parts by weight of the aqueous phase is 10 to 20 parts by weight, the line in step 2) The polyol to be mixed may be 5 to 15 parts by weight. Preferably, the pre-mixed polyol may be 8 to 12 parts by weight based on 100 parts by weight of the total cosmetic composition according to one aspect, and most preferably 10 parts by weight, but is not limited thereto.

The water drop macro emulsion cosmetic composition according to one aspect is manufactured by the following method in order to maximize the water drop effect while stably containing a high content of inorganic powder to significantly increase color uniformity, ultraviolet ray blocking effect, and usability when used. It can be.

First, the oil phase component A of [Table 1] is mixed using a homomixer to form an oil phase, and some of the polyol components are mixed with the prepared oil phase using a homomixer to form an oil phase-polyol mixture. Powder B of [Table 1] is mixed and dispersed in the oil phase-polyol mixture using a homomixer to create an oil phase-polyol-inorganic powder mixture. To the oil phase-polyol-inorganic powder mixture, add the C aqueous phase components of [Table 1], including the remaining polyols in addition to the pre-mixed polyol, and mix using a homomixer to complete a water-in-oil type cosmetic composition.

In one embodiment, the emulsifiable silicone elastomer and polyglycerin-based silicone dispersant are included in an amount of 1 to 10 parts by weight based on 100 parts by weight of the composition, and the thickener is included in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the composition, The inorganic powder may be included in an amount of 1 to 30 parts by weight based on 100 parts by weight of the composition, and the polyol may be included in an amount of 1 to 30 parts by weight based on 100 parts by weight of the composition.

The water drop macro emulsion cosmetic composition according to one aspect stably contains a high content of inorganic powder and has an excellent water-drop effect that immediately releases moisture when applied to the skin, making it useful for various cosmetics. do.

Hereinafter, the present invention will be described in more detail through examples and comparative examples to aid understanding. However, the examples and comparative examples according to the present invention may be modified into various other forms, and the scope of the present invention is not limited to the examples and comparative examples described below.

Examples 1 to 3 and Comparative Examples 1 to 6: Preparation of macroemulsion compositions with different compositions

The cosmetic compositions of Examples 1 and 2 and Comparative Examples 1 to 5 were prepared with the compositions (unit: weight %) shown in Table 1 below. The specific manufacturing method is as follows.

(1) The oil phase components A of [Table 1] were mixed to form an oil phase. The mixing was performed using a Homo Mixer at 60-70°C and a speed of 1000-2500 rpm for 5 to 15 minutes.

(2) Some polyol components were pre-mixed into the oil phase prepared above. The pre-mixed polyol was applied at a weight ratio of 1:0.1 to 0.3 with respect to the entire water phase. The mixing was performed using a Homo Mixer at 60-70°C and a speed of 2500-3500 rpm for 5 to 15 minutes.

(3) Powder B of [Table 1] was mixed and dispersed in the above mixture. The mixing was performed for 10 to 20 minutes at 60 to 70°C and a speed of 3000 to 5000 rpm using a Homo Mixer.

(4) A water-in-oil type cosmetic composition was prepared by slowly adding the C aqueous phase component to the mixture of the oil phase component A and the powder B (AB mixture). The mixing was performed for 10 to 30 minutes at 60-70°C and a speed of 5000-6500 rpm using a Homo Mixer.

division ingredient Example Comparative example One 2 3 One 2 3 4 5 6 A Lauryl Dimethicone/Polyglycerin-3 Crosspolymer 3.5 3.5 3.5 3.5 - - 3.5 3.5 3.5 Polyglyceryl-3polydimethylsiloxyethyl dimethicone 0.5 One 1.5 - 0.5 0.5 0.5 0.5 0.5 Cetyl PEG/PPG-10/1 Dimethicone - - - - 3.5 0.5 - - - thickener 0.8 0.8 0.8 0.8 0.8 0.8 - 0.8 0.8 oil 20 20 20 20 20 20 20 20 20 B Inorganic sunscreen 13 13 13 13 13 13 13 13 13 coloring agent 5 5 5 5 5 5 5 5 5 C Purified water To 100 glycerin 10 10 10 10 10 10 10 - 20 Propanediol 6 6 6 6 6 6 6 6 6 Other additives 3 3 3 3 3 3 3 3 3

In Table 1, Examples 1, 2, and 3 had different contents of the emulsifiable silicone elastomer and polyglycerin-based silicone emulsifier or dispersant, Comparative Example 1 excluded the polyglycerin-based silicone emulsifier or dispersant, and Comparative Example 2, In 3, general emulsifiers were applied in different amounts instead of emulsifiable silicone elastomers. Comparative Example 4 excluded the thickener, and Comparative Example 5 excluded glycerin from the applied polyol. Comparative Example 6 used a high content of glycerin in the water phase.

Experimental Example 1: Formulation stability evaluation

1-1: Dispersibility evaluation

To evaluate the dispersibility of the cosmetic compositions prepared in Examples 1 to 3 and Comparative Examples 1 to 6, the dispersion state of the pigment on the surface after the powder dispersion step, emulsification step, and cooling during the manufacturing process was visually confirmed. The results are shown in Table 2 below.

evaluation Example 1 Example 2 Example 3 Comparative Example 1 Comparative example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 dispersibility ○ ◎ ◎ X ◎ X X Δ X Poor:

As shown in Table 2, in Examples 1 to 3, it was confirmed that the higher the content of the polyglycerin-based silicone emulsifier or dispersant, the better the dispersibility. This seems to be because the glycerin group, which is a hydrophilic bonding group of the polyglycerin-based silicone emulsifier, is chemically similar to polyol containing glycerin, so it was able to stabilize a large amount of polyol.

Meanwhile, in Comparative Example 1, which did not contain the corresponding ingredient, it was confirmed that the dispersion state was poor. In addition, in Comparative Example 2, where the same amount of general emulsifier was replaced with emulsifiable silicone elastomer, the dispersion state was very excellent, but it was confirmed that this may occur because it is not a water drop formulation. In addition, Comparative Examples 3 to 6 showed that the dispersion state was quite poor, confirming that the inclusion of appropriate amounts of emulsifiable silicone elastomer, thickener, and glycerin is essential for maintaining high dispersibility of the cosmetic composition.

1-2: Temperature stability evaluation

The cosmetic compositions prepared in Examples 1 to 3 and Comparative Examples 1 to 6 were evaluated for temperature stability. The contents were placed in a transparent viscosity bottle and left for 3 months under low temperature (4℃), room temperature (25℃), high temperature (45℃), and cycle (-10~45℃) conditions, and were periodically observed to evaluate changes in state. The cycle conditions were evaluated by three cycles of -10°C, 25°C, and 45°C in an 8-hour period in a constant temperature room.

Storage conditions Example 1 Example 2 Example 3 Comparative Example 1 Comparative example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 Low temperature (4℃) ○ ○ ○ X ○ X Δ ○ X Room temperature (25℃) ○ ○ ○ X ○ X Δ ○ ○ High temperature (45℃) ○ ○ ○ X ○ X X Δ Δ Cycle (-10~45℃) ○ ○ ○ X ○ X X Δ Δ average ○ ○ ○ X ○ X X Δ X Poor:

As shown in Table 3, it was confirmed that Examples 1 to 3 and Comparative Example 2 had excellent temperature stability.

Experimental Example 2: Evaluation of UV protection index

The sun protection factor (SPF) of the cosmetic compositions prepared in Examples 1 to 3 and Comparative Examples 1 to 6 was evaluated. The UV protection index is applied to the transport tape so that the sample is at the level of 2mg/cm ² according to the UV protection functionality test method in the ‘Functional Cosmetic Standards and Test Methods’ of the Food and Drug Administration Notice, dried for 15 minutes, and tested with an SPF 290 analyzer. It was measured. The UV protection index was summarized as the average value of three experiments, and the results are shown in Table 4 below.

evaluation Example 1 Example 2 Example 3 Comparative Example 1 Comparative example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 SPF ( in vitro ) 41.6 43.4 45.9 - 45.6 37.3 38.7 39.2 38.8

As shown in Table 4, the cosmetic compositions prepared in Examples and Comparative Examples showed overall similar UV protection index values, but in Examples 2 and 3, which had a high content of polyglycerin-based silicone emulsifier or dispersant, the UV protection index was relatively similar. A high value was confirmed, and in the case of Comparative Example 1 in which the above ingredients were excluded and Comparative Example 4 in which the thickener was excluded, dispersibility was poor and showed a relatively low UV protection index. In addition, it was confirmed that Comparative Examples 5 and 6 also showed relatively low UV protection index due to poor dispersibility and stability. Meanwhile, Comparative Example 1 was excluded from the results because it was not emulsified well and a stable formulation was not achieved.

Experimental Example 3: Evaluation of usability

In order to evaluate the feeling of use of the cosmetic compositions prepared in Examples 1 to 3 and Comparative Examples 1 to 6, water drop effect, color uniformity, spreadability, and adhesion were evaluated on 20 women aged 20 to 40 years. did. In the case of the water drop effect, when an appropriate amount of the cosmetic composition of Examples and Comparative Examples was applied to the back of the hand, it was determined that there was an immediate water bursting effect and a water drop effect when water droplets were formed. In the case of color uniformity, an appropriate amount of the cosmetic composition of Examples and Comparative Examples was applied on the back of the hand and rubbed by hand, and it was evaluated whether it was applied evenly to the skin without clumping. The results are shown in Table 5 below.

evaluation Example 1 Example 2 Example 3 Comparative Example 1 Comparative example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 water drop effect ◎ ○ Δ X X ◎ X ◎ Δ color uniformity ○ ○ ○ X ◎ X X Δ Δ Spreadability ○ ○ ○ X Δ X ○ Δ ○ Close fit ○ ○ Δ X ◎ Δ Δ ○ Δ Poor:

As shown in Table 5, Example 1 showed a very excellent water drop effect, but depending on the polyglycerin-based silicone emulsifier or dispersant content, Examples 2 and 3 showed relatively less water drop effect, and Comparative Example 1 It was confirmed that the water drop effect did not occur when the polyglycerin-based silicone dispersant was completely excluded as shown. In Comparative Examples 2 and 3, when the same amount of general emulsifier was replaced with emulsifiable silicone elastomer, no water drop effect was observed, and when it was replaced with a low amount, a very excellent water drop effect was confirmed. In Comparative Example 4, in which the thickener was excluded, the water drop effect did not occur due to low viscosity. In Comparative Example 5, in which glycerin was excluded, the water drop effect was confirmed. In Comparative Example 6, in which a high amount of glycerin was included, the water drop effect was observed. It was confirmed that it was somewhat low. That is, Examples 1 and 2, which used an emulsifiable silicone elastomer and a polyglycerin-based silicone dispersant mixed in an optimal ratio, had the best water drop effect, so that when applied to the skin, the emulsion breaks and the internal aqueous phase is immediately released, providing a makeup effect or UV protection effect. I could see that it was excellent.

In addition, Examples 1 and 2 were excellent in color uniformity, spreadability, and adhesion, expressing a uniform color without any clumping phenomenon, and when applying the cosmetic on the skin, it spread smoothly without difficulty, allowing users to enjoy excellent spreadability, While feeling a tight fit, I was able to additionally feel the water drop effect.

Comparative Example 7: Preparation of macro emulsion composition using different manufacturing methods

The cosmetic composition of Comparative Example 7 was prepared using the same composition (unit: weight %) as Example 1 in Table 1, but without the step of pre-mixing some polyol components into the oil phase. The specific manufacturing method is as follows.

(1) The oil phase components A of [Table 1] were mixed to form an oil phase.

(2) Powder B of [Table 1] was mixed and dispersed in the above mixture.

(3) A water-in-oil type cosmetic composition was prepared by slowly adding the C aqueous phase component to the mixture of the oil phase component A and the powder B (AB mixture).

Experimental Example 4: Evaluation of formulation stability, UV protection index, and feeling of use

Using the same method as in Experimental Examples 1 to 3, the formulation stability, UV protection index, and feeling of use of the cosmetic composition prepared in Comparative Example 7 were evaluated. The results are compared with Examples 1 and 2 and are shown in Tables 6 to 9 below.

evaluation Example 1 Example 2 Comparative Example 7 dispersibility ○ ◎ Δ Poor:

Storage conditions Example 1 Example 2 Comparative Example 7 Low temperature (4℃) ○ ○ ○ Room temperature (25℃) ○ ○ ○ High temperature (45℃) ○ ○ ○ Cycle (-10~45℃) ○ ○ ○ average ○ ○ ○ Poor:

evaluation Example 1 Example 2 Comparative Example 7 SPF ( in vitro ) 41.6 43.4 39.4

evaluation Example 1 Example 2 Comparative Example 7 water drop effect ◎ ○ ◎ color uniformity ○ ○ Δ Spreadability ○ ○ Δ Close fit ○ ○ ○ Poor:

As a result, compared to Examples 1 and 2, Comparative Example 7, in which the process was changed, had an excellent water drop effect and excellent temperature stability and adhesion, but the dispersibility was somewhat poor, and when the cosmetic composition was applied to the skin, aqueous components It was confirmed that the spreadability and color uniformity were not good while rolling.

Based on the above results, the present invention includes the emulsifiable silicone elastomer, polyglycerin-based silicone emulsifier or dispersant, and improves formulation stability through a manufacturing process of pre-mixing some polyol with the oil phase component, thereby stably producing a high content of inorganic powder. It has been confirmed that it can be usefully applied to various cosmetics such as foundations and sunscreens that provide a moist feeling due to the immediate water drop effect when applied to the skin, while providing a stable UV protection effect, excellent applicability, and skin adhesion. did.

The description of the present invention described above is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive.

Claims (12)

An oil phase comprising 1 to 10 parts by weight of an emulsifiable silicone elastomer and a polyglycerin-based silicone dispersant, and 0.1 to 5 parts by weight of a thickener; and
It includes an aqueous phase containing 1 to 30 parts by weight of inorganic powder and 1 to 30 parts by weight of polyol,
The emulsifiable silicone elastomers include dimethicone/PEG-10/15 cross polymer, PEG-15/lauryl dimethicone crosspolymer, PEG-15/lauryl polydimethyl siloxyethyl dimethicone, and die At least one selected from the group consisting of methicone/polyglycerin-3 crosspolymer, lauryl dimethicone/polyglycerin-3 crosspolymer, and polyglycerin-3/laurylpolydimethylsiloxyethyl-dimethicone. ,
The polyglycerin-based silicone dispersant is polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 polydimethylsiloxyethyl dimethicone, and lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone. At least one selected from the group consisting of,
The emulsifiable silicone elastomer and polyglycerin-based silicone dispersant are mixed at a weight ratio of 1:0.03 to 0.5,
Water drop water-in-oil macro emulsion cosmetic composition. The cosmetic composition according to claim 1, wherein the emulsifiable silicone elastomer is lauryl dimethicone/polyglycerin-3 crosspolymer. The cosmetic composition according to claim 1, wherein the polyglycerin-based silicone dispersant is polyglyceryl-3 polydimethylsiloxyethyldimethicone. The cosmetic composition according to claim 1, wherein the thickener is at least one selected from the group consisting of a hectorite-based compound and silicone resin powder. The cosmetic composition according to claim 4, wherein the hectorite-based compound is at least one selected from the group consisting of disteadimonium hectorite, stearalkonium hectorite, and quaternium-18 hectorite. The method of claim 4, wherein the silicone resin powder is vinyl dimethicone/methicone silsesquioxane crosspolymer, diphenyldimethicone/vinyldiphenyldimethicone/silsesquioxane crosspolymer, and polysilicon-1 crosspolymer. , and polysilicon-22, which is at least one selected from the group consisting of a cosmetic composition. The cosmetic composition according to claim 1, wherein the inorganic powder is at least one selected from the group consisting of inorganic sunscreens and pigments. The cosmetic composition of claim 7, wherein the inorganic sunscreen is at least one selected from the group consisting of titanium dioxide and zinc oxide. The cosmetic composition of claim 7, wherein the pigment is at least one selected from the group consisting of yellow iron oxide, red iron oxide, black iron oxide, and silica. The cosmetic composition according to claim 1, wherein the polyol is at least one selected from the group consisting of glycerin, butylene glycol, propanediol, dipropylene glycol, and pentylene glycol. A method for producing a water drop water-in-oil macro emulsion cosmetic composition,
1) Forming an oil phase by mixing an emulsifiable silicone elastomer, a polyglycerin-based silicone dispersant, and a thickener;
2) adding polyol to the oil phase to emulsify it;
3) mixing and dispersing inorganic powder in the oil phase-polyol mixture; and
4) It includes the step of adding purified water and an aqueous phase containing polyol to the oil phase-polyol-inorganic powder mixture,
The emulsifiable silicone elastomer and polyglycerin-based silicone dispersant are included in an amount of 1 to 10 parts by weight based on 100 parts by weight of the composition, the thickener is included in an amount of 0.1 to 5 parts by weight based on 100 parts by weight of the composition, and the inorganic powder is included in 100 parts by weight of the composition. It is contained in an amount of 1 to 30 parts by weight based on parts by weight, and the polyol is contained in an amount of 1 to 30 parts by weight based on 100 parts by weight of the composition,
The emulsifiable silicone elastomers include dimethicone/PEG-10/15 cross polymer, PEG-15/lauryl dimethicone crosspolymer, PEG-15/lauryl polydimethyl siloxyethyl dimethicone, and die At least one selected from the group consisting of methicone/polyglycerin-3 crosspolymer, lauryl dimethicone/polyglycerin-3 crosspolymer, and polyglycerin-3/laurylpolydimethylsiloxyethyl-dimethicone. ,
The polyglycerin-based silicone dispersant is polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 polydimethylsiloxyethyl dimethicone, and lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone. At least one selected from the group consisting of,
Method for producing water drop water-in-oil macro emulsion cosmetic composition. The method of claim 11, wherein the emulsifiable silicone elastomer and the polyglycerin-based silicone dispersant are mixed at a weight ratio of 1:0.03 to 0.5.