KR102313518B1 - W/O emulsion cosmetic composition with improved long-lasting and feeling of moisture - Google Patents

Abstract

The present invention relates to a water-in-oil cosmetic composition comprising two or more types of film-forming agents, characterized in that the continuous phase and the dispersed phase contain different film-forming agents. Specifically, the cosmetic composition of the present invention can provide excellent durability and excellent moisturizing feeling.

Description

Water-in-oil cosmetic composition with improved durability and improved dry feeling {W/O emulsion cosmetic composition with improved long-lasting and feeling of moisture}

The present invention relates to a water-in-oil cosmetic composition, and more particularly, to a water-in-oil cosmetic composition capable of improving durability while eliminating dryness.

The need for a cushion foundation with excellent durability is constantly emerging, and products featuring this feature are continuously being released. Since the water-in-oil type has superior durability than the water-in-water type due to the characteristics of the formulation, attempts have been made to further improve the durability of the water-in-oil type. In addition, in the case of low viscosity, the spreadability and feeling of use are excellent, but the durability is lower than in the case of high viscosity, so efforts to increase the durability in the low viscosity liquid formulation are continuing. The existing method mainly uses a method of using an oil-soluble film former for the trauma of the cosmetic composition, but since this causes a disadvantage of dryness, there is a limit to using a large amount of the oil-soluble film former.

An object of the present invention is to provide a water-in-oil cosmetic composition with high durability.

The inventors of the present invention intend to solve the problem that compatibility with other components may be reduced even in a water-in-oil cosmetic composition.

An object of the present invention is to provide a new cosmetic composition capable of alleviating the dry feeling gradually increased over time after application to the skin.

An object of the present invention is to provide a method for solving the dry feeling of a cosmetic composition having excellent durability. That is, an object of the present invention is to provide a cosmetic composition having excellent durability and improved dryness.

An object of the present invention is to provide a water-in-oil cosmetic composition having excellent adhesion.

The present invention relates to a water-in-oil cosmetic composition comprising two or more types of film-forming agents, characterized in that the continuous phase and the dispersed phase contain different film-forming agents.

The inventors of the present invention use a large amount of an oil-based film former to improve the durability of the cosmetic composition for makeup applied to the skin.

That is, the present invention was completed to improve the feeling of dryness of the skin by reducing the amount of the oily film forming agent, and to improve the compatibility with other ingredients, the feeling of use, and the like.

The inventors of the present invention have completed the present invention, recognizing for the first time that there is a difference in achieving the effects of the present invention depending on the type and/or content of the aqueous film-forming agent used in the interior.

The inventors of the present invention were able to design specific experiments to confirm that the type of oil-based film-forming agent used together with the aqueous film-forming agent can also play an important role in achieving the object of the present invention.

A 'continuous phase' as used herein is a continuous phase.

As used herein, a 'dispersed phase' is a phase dispersed in a continuous phase.

In the emulsion, the continuous phase and the dispersed phase are dispersed in the form of small droplets at a constant ratio without mixing with each other, and the dispersed phase is present in the continuous phase.

An oil-in-water (O/W) emulsion is an emulsion in which the continuous phase is water and the dispersed phase is oil, and a water-in-oil emulsion is an emulsion in which the continuous phase is oil and the dispersed phase is water.

The cosmetic composition of the present invention may be a water-in-oil type, preferably an emulsion having a continuous oil phase such as a water-in-oil and oil-in-oil emulsion.

The cosmetic composition may contain 0.01 to 20% by weight of the oily film former, preferably 1 to 15% by weight, more preferably 5 to 13% by weight, and most preferably 8 to 10% by weight of the oily film. A film former may be included.

The cosmetic composition of the present invention uses a small amount of the oil-based film-forming agent and further includes a film-forming agent in the dispersed phase, as described below, so that a small amount of the oil-based film-forming agent can be used. The present invention can provide a cosmetic composition having less dry skin and excellent skin adhesion by using a small amount of an oily film former.

As used herein, 'aqueous' film-forming agent may be used to include both water-soluble or water-dispersible film-forming agents.

As used herein, the 'oily' film former may be used to include both oil-soluble and oil-dispersible film formers.

The cosmetic composition may include both an oil-based film former and an aqueous film former.

The cosmetic composition of the present invention may be a water-in-oil cosmetic composition including both an oil-based film former and an aqueous film former.

The cosmetic composition of the present invention may be an oil-in-water cosmetic composition comprising both an oil-based film former and an aqueous film former.

The cosmetic composition of the present invention contains 20% by weight or less or 10% by weight or less of an oil-based film former, and may further include an aqueous film-forming agent.

When the oil-based film former and the aqueous film former are used together, the inventors of the present invention can expect excellent skin adhesion, durability, and feeling of use.

Furthermore, it was confirmed that even more excellent moisturizing power and dryness improvement effect could be obtained depending on the type of the water-based film former and the type of the oil-based film former.

The oil-based film former is trimethylsiloxysilicate, acrylate/stearylacrylate/dimethicone methacrylate copolymer polypropylsilsesquioxane, C30-45 alkyldimethylsilylpolypropylsilsesquioxane, acrylate / may include at least one selected from the group consisting of /polytrimethylsiloxymethacrylate copolymer, acrylate /dimethicone copolymer, and phenylpropyldimethylsiloxysilicate, preferably trimethylsiloxysilicate and/or an acrylate/stearylacrylate/dimethicone methacrylate copolymer. When the trimethylsiloxysilicate and / or acrylate / stearyl acrylate / dimethicone methacrylate copolymer was used, it was easy to stabilize the dispersed phase, and the skin moisturizing power and adhesion were excellent, and a flexible film film could be formed. . Preferably, the trimethylsiloxysilicate can form a strong film, and the acrylate/stearylacrylate/dimethicone methacrylate copolymer can form a flexible film.

The aqueous film-forming agent may include at least one selected from the group consisting of sodium polystyrene sulfonate, hydroxypropyl guar, and hydroxyethyl cellulose, preferably hydrolyzed wheat protein/Pvpicross polymer, and / or sodium polystyrene sulfonate may be included, and more preferably sodium polystyrene sulfonate. When the sodium polystyrene sulfonate was used as an aqueous film forming agent, it was easy to stabilize the dispersed phase, and the skin moisturizing power and adhesion were excellent.

The cosmetic composition contains the oily film forming agent in an amount of 0.01 to 20% by weight, preferably 1 to 18% by weight, more preferably 1 to 15% by weight, even more preferably 1 to 10% by weight, based on the total weight of the cosmetic composition, 1 to 8% by weight may be included.

An embodiment of the present invention may contain 0.01 to 12% by weight, preferably 1 to 11% by weight, more preferably 10.5% by weight of the aqueous film former based on the total weight of the cosmetic composition. If it is less than this content, there is no film effect, and if it is more than this content, the feeling of use may become sticky and the spreadability may be reduced. When it had the above content range, it was excellent in maintaining the moisture content of the skin, and the effect of improving the feeling of dryness was excellent. At the same time, it was advantageous in providing formulation stability and a feeling of moisture.

In particular, the oil-based film-forming agent included in the cosmetic composition is acrylate/stearyl acrylate/dimethicone methacrylate copolymer and/or trimethylsiloxysilicate, and the aqueous film-forming agent is sodium polystyrene sulfonate. In particular, it can be excellent for achieving the object of the present invention.

The cosmetic composition may have one or more formulations selected from the group consisting of foundation, concealer, makeup base, BB cream, lotion, cream, and wax, and may preferably be provided as a water-in-oil foundation.

The cosmetic composition of the present invention may be included without limitation as long as it is a component that can be included in a conventional cosmetic composition that can be included in the formulations listed above.

For example, the cosmetic composition of the present invention may further include an organic/inorganic sunscreen.

The present invention can have an excellent effect, especially when applied to products used by storing the cosmetic composition in a sponge. Considering the instability of the formulation, which is a problem in the water-in-oil cosmetic composition in the sponge, the corrosiveness of the sponge, etc., the cosmetic composition of the present invention may be stored in the sponge and easily provided.

The cosmetic composition of the present invention provides excellent skin moisture and moisture retention.

A small amount of oily film forming agent can be used through the cosmetic composition of the present invention.

The cosmetic composition of the present invention has excellent skin adhesion, and is excellent in makeup durability because the makeup is slowed down by sebum and the like.

The cosmetic composition of the present invention can provide excellent feeling of use and skin adhesion.

The cosmetic composition of the present invention is easy to provide by being absorbed into a sponge.

The present invention can increase affinity with the skin, and can further improve the poor persistence that appears when only the oil-soluble film agent is used in excess, and at the same time improve the dryness of the skin, which was a disadvantage, thereby increasing consumer satisfaction.

Although the oil-soluble film agent can form a film to increase the durability, the feeling of use such as tightness, dry feeling, and stickiness of the skin was not good. can In addition, the present invention can provide a cosmetic composition with improved stability.

1 is a graph showing the results of improvement in moisture retention when an oil-based film-forming agent and an aqueous film-forming agent are used together.
Figure 2 is the result of analyzing the degree of collapse by the artificial sebum through image programming after applying the cosmetic composition of Table 1, standing up the artificial leather, dropping artificial sebum to flow.
3 shows the evaluation results of oil smearing and smearing of a water-in-oil type makeup cosmetic. Compositions A, B, C, and D are shown sequentially from the left.

Hereinafter, examples and the like will be described in detail to help the understanding of the present invention. However, the embodiments according to the present invention may be modified in various other forms, and the scope of the present invention should not be construed as being limited to the following examples. The embodiments of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art.

[Test Example 1] Water-in-oil type makeup cosmetic formulation comprising water-soluble and oil-soluble film former

In order to confirm the durability and dryness improvement of the oil-soluble cosmetic composition containing the water-soluble and oil-soluble film forming agent, the formulation was prepared and tested as follows.

According to the ingredients and content (% by weight) shown in Table 1, a water-in-oil type makeup cosmetic was prepared according to the following preparation method.

<Production method>

1) The oil phase components were mixed, heated to 80 degrees (℃), and then dispersed.

2) The colorant component was mixed in 1) and stirred.

3) The aqueous phase component was gradually heated to 80 degrees (℃) in a separate aqueous phase tank and then completely dissolved.

4) The aqueous phase component of 3) was slowly added to the oil phase component of 1) and emulsified using a homomixer.

5) After completion of emulsification, defoaming and cooling to 28 degrees (℃).

division Ingredients (% by weight) composition A composition B composition C composition D oily ingredients Cyclopentasiloxane remaining amount remaining amount remaining amount remaining amount Phenyltrimethicone 3.00 3.00 3.00 3.00 PEG-10 Dimethicone 3.00 3.00 3.00 3.00 Disteadimonium Hectorite 0.30 0.30 0.30 0.30 Acrylate/stearylacrylate/dimethicone methacrylate copolymer 2.00 2.00 2.00 2.00 Acrylate/polytrimethylsiloxymethacrylate copolymer - 2.00 - - Spices 0.3 0.3 0.3 0.3 coloring agent titanium dioxide 10.00 10.00 10.00 10.00 Yellow iron oxide, red iron oxide, black iron oxide 2.00 2.00 2.00 2.00 award-winning ingredients Purified water remaining amount remaining amount remaining amount remaining amount sodium chloride 0.50 0.50 0.50 0.50 Hydrolyzed wheat protein/PVP cross polymer - - 2.00 - Sodium polystyrene sulfonate - - - 2.00 antiseptic appropriate amount appropriate amount appropriate amount appropriate amount

<Measurement of moisture>

A moisture test of the water-in-oil type makeup cosmetics of Table 1 was performed.

Moisture measurement was measured for actual test subjects, and after 20 minutes of adaptation to a constant temperature room for objective moisture measurement, the test was started using a corneometer.

The measurement method was measured on the basis of before, immediately after, 1 hour, and 3 hours after application, and the average value was calculated after each of the three measurements to show the improvement in moisture retention (%) compared to before application.

The results are shown in Table 2 below and in FIG. 1 .

On the other hand, as can be seen in FIG. 1 , the composition F also exhibited an excellent moisture retention improvement rate.

immediately after 1 hours 3 hours before the launch 1.22 -2.02 3.26 composition A 30.14 11.89 10.00 composition B 36.53 16.28 11.77 composition C 43.74 25.51 15.31 composition D 46.28 27.11 16.19

As shown above, when the water-soluble film-forming agent was mixed with the oil-soluble film-forming agent, the moisture-retaining improvement rate was higher than when the oil-soluble film-forming agent was used alone, confirming that the moisture retention was better. .

In addition, as can be seen in Table 2, the composition C used the same amount of the water-soluble film forming agent, but it was confirmed that the composition D had a more excellent moisturizing improvement rate.

<Persistence Test>

The durability test of the water-in-oil type makeup cosmetics of Table 1 was conducted.

Because there is individual difference in human skin, artificial leather was used for objective durability test in this experiment.

For durability evaluation, 0.05 g of each sample was applied to artificial leather of 5 cmx5 cm in the same size and thickness and dried at 30 degrees (℃) for 2 hours. After that, the artificial leather was set up and artificial sebum was dropped to flow, and the degree of collapse by the artificial sebum was analyzed through image programming.

The digitization was expressed by quantifying the black part of the artificial family whose cremation film was peeled off with ImagePro Plus software.

composition A composition B composition C composition D value 4629 2050 2501 2048

As shown in the above results, it was confirmed visually and numerically that the collapse due to artificial sebum was much less in composition C and composition D than in the case of composition A.

Therefore, it was found that when a water-soluble film-forming agent was mixed with an oil-soluble film-forming agent, it was less prone to collapse due to sebum, and thus the cosmetic durability was excellent. Among these, in particular, in the case of composition D containing sodium polystyrene sulfonate in the inner phase, it was confirmed that the effect was excellent.

Through these results, it was confirmed that the makeup persistence may vary depending on the type of the water-soluble film forming agent.

<Evaluation of oil repellency and smearing>

The degree of smearing and smearing of oil of the water-in-oil type makeup cosmetic of Table 1 was evaluated.

As for the measurement method, each sample was uniformly pushed to the same thickness (60 μm) on a glass plate, and then dried at 30° C. (° C.) for 1 hour. Then, the same amount of artificial sebum was dropped in the middle part and left at 30 degrees (℃) for 20 minutes to check the degree of oil smearing. Thereafter, the artificial leather was placed on the sebum part and rolled 10 times with a constant pressure (200 g weight) to check the amount of the sample buried on the artificial leather, and the degree of burial was evaluated and shown in FIG. 3 .

As can be seen from FIG. 3 , it was confirmed that the degree of smearing and smearing of oil was the most severe in composition A. Compared to composition A, the degree of smearing or smearing of oil was less in composition C and composition D. Among them, especially in composition D, which additionally contains sodium polystyrene sulfonate in the inner phase, there was no oil smearing phenomenon compared to the case of composition A and composition B. , it was confirmed that the burial was also the least. Therefore, it can be seen that the present invention has excellent makeup durability because it is not smeared or erased in other places due to external activities.

This affects the stability and feeling of use of the formulation depending on the size and charge of the water-based coating agent, showing different characteristics for each type. Accordingly, it was confirmed that the selection of the type and content of the water-soluble coating agent had an important effect on the water-in-oil formulation.

[Test Example 2] Composition of water-in-oil type makeup cosmetics by content of water-soluble film agent

division Ingredients (% by weight) composition E composition D composition F composition G oily ingredients Cyclopentasiloxane remaining amount remaining amount remaining amount remaining amount Phenyltrimethicone 3.00 3.00 3.00 3.00 PEG-10 Dimethicone 3.00 3.00 3.00 3.00 Disteadimonium Hectorite 0.30 0.30 0.30 0.30 Acrylate/stearylacrylate/dimethicone methacrylate copolymer 2.00 2.00 2.00 2.00 Acrylate/polytrimethylsiloxymethacrylate copolymer - - - - Spices 0.3 0.3 0.3 0.3 coloring agent titanium dioxide 10.00 10.00 10.00 10.00 Yellow iron oxide, red iron oxide, black iron oxide 2.00 2.00 2.00 2.00 award-winning ingredients Purified water remaining amount remaining amount remaining amount remaining amount sodium chloride 0.50 0.50 0.50 0.50 Sodium polystyrene sulfonate 15.00 2.00 5.00 10.00 antiseptic appropriate amount appropriate amount appropriate amount appropriate amount

The manufacturing method is the same as the manufacturing method described in Test Example 1, and durability, stability, and feeling of use were confirmed.

Durability was evaluated in the same manner as in Test Example 1, and stability was compared with room temperature after storage at 45 degrees (°C) for 2 weeks. The sensory evaluation was conducted for the feeling of use, and the degree of moisture feeling was evaluated for 20 consumers in their 20s and 40s, and a score of 0 to 5 was given, and the scores were averaged.

1) Stability evaluation criteria: O: Stable, △: Normal, X: Separate

2) Moisture evaluation criteria: 1: Very bad, 2: Bad, 3: Normal, 4: Good, 5: Very good

composition E composition D composition F composition G vitality 2000 2048 2013 2001 stability △ O O O moisture 4.0 4.9 4.6 4.6

As shown in the above results, when the content of the aqueous film former was increased, the moisture feeling was low and the stability was also poor. In the case of compositions D to G, the stability was excellent even at a content of 10%.

[Test Example 3] Water-in-oil type makeup cosmetic formulation containing different types of oil-soluble coating agents

Trimethylsiloxysilicate was included in the oil phase to further evaluate the persistence.

A water-in-oil cosmetic composition containing both a film-forming agent in an oil phase and an aqueous phase was prepared with the composition shown in Table 6 below.

division Ingredients (% by weight) composition H composition I oily ingredients Cyclopentasiloxane remaining amount remaining amount Phenyltrimethicone 3.00 3.00 PEG-10 Dimethicone 3.00 3.00 Disteadimonium Hectorite 0.30 0.30 Trimethylsiloxysilicate 2.00 2.00 Spices 0.3 0.3 coloring agent titanium dioxide 10.00 10.00 Yellow iron oxide, red iron oxide, black iron oxide 2.00 2.00 award-winning ingredients Purified water remaining amount remaining amount sodium chloride 0.50 0.50 Hydrolyzed wheat protein/PVP cross polymer 2.00 - Sodium polystyrene sulfonate - 2.00 antiseptic appropriate amount appropriate amount

<Persistence Test>

It was tested in the same manner as the previous persistence test method, and the results are shown in Table 7 below.

composition H composition I value 2469 2015

As shown in the above results, it was numerically confirmed that the composition I was less prone to collapse due to the artificial sebum than the composition H.

Therefore, even when other types of oil-soluble coating agents were applied, it was confirmed that, as in the previous results, when sodium polystyrene sulfonate was used rather than hydrolyzed wheat protein/PVP cross polymer, it was confirmed that the durability was better. In addition, the cosmetic composition using trimethylsiloxysilicate together with sodium polystyrene sulfonate was more excellent in moisturizing and formulation stability than when hydrolyzed wheat protein/PVP crosspolymer and trimethylsiloxysilicate were used together.

Claims (9)

It contains different film formers in the continuous phase and the dispersed phase,
wherein the continuous phase comprises an oily film former;
The dispersed phase is characterized in that it comprises at least one aqueous film former selected from the group consisting of sodium polystyrene sulfonate, hydrolyzed wheat protein / PVP cross polymer, hydroxypropyl guar, and hydroxyethyl cellulose, 2 A cosmetic in which a water-in-oil type cosmetic composition comprising more than one type of film-forming agent is stored in a sponge. The cosmetic according to claim 1, wherein the cosmetic composition is a water-in-oil or oil-in-water emulsion in which the continuous phase is an oil phase. The cosmetic according to claim 1, wherein the cosmetic composition contains 10 wt% or less of the oily film former. delete delete The method of claim 1, wherein the oil-based film former is trimethylsiloxysilicate, acrylate/stearylacrylate/dimethicone methacrylate copolymer polypropylsilsesquioxane, C30-45 alkyldimethylsilylpolypropylsil Cosmetics, characterized in that at least one selected from the group consisting of sesquioxane, acrylate/polytrimethylsiloxymethacrylate copolymer, acrylate/dimethicone copolymer, and phenylpropyldimethylsiloxysilicate. delete The cosmetic according to claim 1, wherein the cosmetic composition has one or more formulations selected from the group consisting of foundation, concealer, makeup base, BB cream, lotion, cream, and wax. The cosmetic composition according to claim 1, wherein the cosmetic composition contains 0.01 to 20% by weight of the oil-based film former based on the total weight of the cosmetic composition, and 0.01 to 12% by weight of the aqueous film former based on the total weight of the cosmetic composition. .

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