TW201936162A - W/O emulsion cosmetic composition - Google Patents

Abstract

The present invention relates to a water-in-oil type cosmetic composition comprising at least two film formers, wherein the film formers different from each other are contained in a continuous phase and a dispersed phase, respectively. Particularly, the cosmetic composition of the present invention is superior in sustainability and can provide an excellent sense of moisturization.

Description

Water-in-oil type cosmetic composition

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

In recent years, the demand for air cushion foundations with good staying power has been increasing, and products featuring this feature have also been introduced to the market. According to the characteristics of the dosage form, since the water-in-oil type has better endurance than the oil-in-water type, tests for further improving the endurance of water-in-oil products are continuously performed. In addition, in the case of low viscosity, although the ductility and the feeling of use are good, the staying power is lower than that in the case of high viscosity. Therefore, efforts have been made to improve the staying power in low viscosity liquid dosage forms. As a conventional method, there is mainly a method of using an oil-soluble film-forming agent on the outer phase of the cosmetic composition, but this causes a disadvantage of drying, and therefore, a large amount of the oil-soluble film-forming agent is limited.

Technical topics

The invention provides a water-in-oil type cosmetic composition with high endurance.

A problem to be solved by the inventors of the present invention is to reduce the compatibility with other components in a water-in-oil cosmetic composition.

The present invention provides a novel cosmetic composition capable of alleviating a feeling of dryness that gradually increases with time after application to the skin.

The present invention provides a solution that has good durability and can eliminate the dry feeling of a cosmetic composition. That is, a cosmetic composition having good durability and improved dryness is provided.

The present invention provides a water-in-oil cosmetic composition having an excellent fit feeling.

Technical solutions

The present invention relates to a water-in-oil cosmetic composition including two or more film-forming agents. The water-in-oil cosmetic composition is characterized by including different film-forming agents in a continuous phase and a dispersed phase.

In the makeup cosmetic composition applied to the skin, a large amount of an oily film-forming agent is used in order to improve the staying power, and the inventors of the present invention realized the problem occurring at this time and completed the present invention in order to solve the problem. invention.

That is, the objective of this invention is to reduce the usage-amount of an oil-based film-forming agent, to improve the dry feeling of skin, and to improve compatibility with other components, a feeling of use, etc.

In particular, the inventors of the present invention first realized that the effects of the present invention differ depending on the type and / or content of the aqueous film-forming agent used in the internal phase, and thus completed the present invention.

The inventors of the present invention designed specific experiments to confirm that the type of the oily film-forming agent used together with the aqueous film-forming agent also played an important role in achieving the object of the present invention.

The "continuous phase" used in this specification is a continuous phase.

The "dispersed phase" used in this specification is a phase dispersed in a continuous phase.

In terms of an emulsion, the continuous phase and the dispersed phase are dispersed in small droplets at a certain ratio without mixing with each other, thereby forming the state of the continuous phase memory in the dispersed phase.

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

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

The content of the oil-based film-forming agent used in the cosmetic composition of the present invention is small. As described below, a film-forming agent is also included in the dispersed phase, and thus a small amount of the oil-based film-forming agent is used. Since the present invention uses a small amount of an oily film-forming agent, it can provide a cosmetic composition with less dry skin and a good skin-fitting feeling.

The "aqueous" film-forming agent used in this specification means including a water-soluble film-forming agent or a water-dispersible film-forming agent.

The "oil-based" film-forming agent used in this specification includes an oil-soluble film-forming agent or an oil-dispersible film-forming agent.

The cosmetic composition includes an oily film-forming agent and an aqueous film-forming agent.

The cosmetic composition of the present invention is a water-in-oil type cosmetic composition including an oily film-forming agent and an aqueous film-forming agent.

The cosmetic composition of the present invention is an oil-in-water-in-oil-type cosmetic composition including an oily film-forming agent and an aqueous film-forming agent.

The cosmetic composition of the present invention includes an oily film-forming agent at 20% by weight or less, and further includes an aqueous film-forming agent.

The inventors of the present invention have found that when an oil-based film-forming agent and an aqueous film-forming agent are used together, a good skin-fitting feeling, durability, and usability are achieved, and in particular, moisture retention and moisturizing power of the skin are improved and improved The effect of dry skin.

The inventors of the present invention have further confirmed that according to the type of the above-mentioned aqueous film-forming agent and the type of the oil-based film-forming agent, better moisturizing power and effects of improving dryness can be obtained.

The above-mentioned oily film-forming agent includes a material selected from the group consisting of trimethylsilyloxysilicate, acrylic acid esters / stearyl acrylate / polydimethylsiloxane methacrylate copolymer, and polypropylsilsesquioxane. Alkane, C30-45 alkanol dimethylsilane polypropylsilsesquioxane, acrylate / polytrimethylsiloxane methacrylate copolymer, acrylic (polyester) / polydimethylsiloxane One or more of a group consisting of a copolymer and a phenylpropyldimethylsilyloxysilicate, preferably, trimethylsilyloxysilicate and / or an acrylic ester / stearyl alcohol Acrylate / polydimethylsiloxane methacrylate copolymer. When using the trimethylsiloxy silicate and / or acrylic (stearyl) / stearyl alcohol acrylate / polydimethyl siloxane methacrylate copolymer, it is easy to stabilize the dispersed phase, The skin has good moisturizing power and fit feeling, and can form a soft film. Preferably, the trimethylsiloxy silicate can form a harder film, and the acrylic (ester) / stearyl acrylate / polydimethylsiloxane methacrylate copolymer can form a soft film .

The aqueous film-forming agent includes one or more members selected from the group consisting of sodium polystyrene sulfonate, hydroxypropyl guar, and hydroxyethyl cellulose, and preferably includes a hydrolyzed wheat protein / PVP crosslinked polymer and / Or sodium polystyrene sulfonate, more preferably, sodium polystyrene sulfonate. When the above-mentioned sodium polystyrene sulfonate is used as an aqueous film-forming agent, it is easy to stabilize the dispersed phase, and the skin has a good moisturizing power and a good sticking feeling.

The above-mentioned cosmetic composition includes 0.01 to 20 wt% of an oily film-forming agent, preferably 1 to 18 wt% of an oily film-forming agent, and more preferably 1 to 15 wt% of the total weight of the cosmetic composition. The oil-based film-forming agent is further preferably 1 to 10% by weight and 1 to 8% by weight.

In one embodiment of the present invention, 0.01 to 12% by weight of the aqueous film-forming agent is included with respect to the total weight of the cosmetic composition, preferably 1 to 11% by weight of the aqueous film-forming agent, and more preferably 10.5 wt% aqueous film former. When it is included below this content, the effect of the coating does not exist, and when it is included above this content, the sticky paste is used and the ductility is reduced. When the content is within the above range, it is obviously beneficial to maintain skin moisturizing degree, and a better effect of improving dry feeling can be obtained. At the same time, it is advantageous to provide a feeling of use in which the stability of the dosage form and the feeling of hydration are felt.

In particular, when an acrylic film / stearyl acrylate / polydimethylsiloxane methacrylate copolymer and / or trimethyl ester is used as the oily film-forming agent included in the cosmetic composition, When using silyloxy silicate and using sodium polystyrene sulfonate as an aqueous film-forming agent, the object of the present invention is obviously facilitated.

The cosmetic composition has one or more dosage forms selected from the group consisting of a foundation, a concealer, a barrier cream, a bb cream, a skin lotion, a skin cream, and a wax, and is preferably provided as a water-in-oil foundation.

The cosmetic composition of the present invention may include any component contained in the general cosmetic composition of the above-disposed dosage form.

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

The present invention can achieve a good effect particularly when it is applied to a product used for storing a cosmetic composition in a sponge. When the instability of the dosage form in the sponge, the corrosiveness of the sponge, and the like existing in the water-in-oil type cosmetic composition are taken into consideration, the cosmetic composition of the present invention can be easily stored in the sponge Provided inside.

Invention effect

The cosmetic composition of the present invention provides good skin moisturizing power and moisture retention.

With the cosmetic composition of the present invention, a small amount of an oily film-forming agent can be used.

The cosmetic composition of the present invention has a good skin-fitting feeling, and has a slow makeup removal speed caused by sebum or the like, and thus has good makeup durability.

The cosmetic composition of the present invention can provide a good feeling of use and a skin-fitting feeling.

The cosmetic composition of the present invention is easily absorbed into a sponge and provided.

The invention improves the affinity with the skin, can further improve the poor persistence that occurs only when the oil-soluble film agent is used alone in excess, and at the same time, it improves the once disadvantage, that is, the problem of dry skin, which can improve consumers Satisfaction.

Conventionally, although a film can be formed by an oil-soluble film agent, the staying power can be improved, but the feeling of thickness, dryness, and sticky feeling of the skin is not good. Improve skin dryness or cosmetic spreadability. In addition, the present invention can provide a cosmetic composition having improved stability.

Hereinafter, in order to help understand the present invention, examples and the like will be described in detail. However, the embodiments of the present invention can be modified into many other forms, and the scope of the present invention is not limited to the following embodiments. The embodiments of the present invention are provided to completely explain the present invention to those skilled in the art.

[Experimental Example 1] A water-in-oil type cosmetic cosmetic formulation including a water-soluble and oil-soluble film-forming agent

In order to confirm the improvement of durability and dryness of the water-in-oil type cosmetic composition containing a water-soluble and oil-soluble film-forming agent, the following dosage forms were manufactured and tested.

Based on the components and contents (wt%) described in Table 1, a water-in-oil type cosmetic was produced by the following production method.

＜ Manufacturing method ＞

1) The oil phase components are mixed and heated to 80 degrees (° C) and dispersed.

2) Mix the colorant components in 1) above and stir.

3) The water phase components are slowly heated to 80 degrees (° C) in another water phase tank and then completely dissolved.

4) Slowly add the water phase component of the above 3) to the oil phase component of the above 1) and complete the emulsification by using a high speed mixer.

5) After the emulsification is completed, defoam and cool to 28 ° C.

[Table 1]

＜ Hydrating test ＞

The water-in-oil makeup cosmetics of the above examples and comparative examples were subjected to a moisturizing test.

The moisturizing test is performed by an actual subject as an object. For an objective moisturizing test, the test is started using a moisturizing detector (Corneometer) after 20 minutes of conditioning in a constant temperature room.

The detection method was performed before, immediately after application, 1 hour after application, and 3 hours after application, and the average value was calculated after 3 measurements and compared with that before application, thereby obtaining a moisture retention improvement rate (%).

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

In addition, it can be confirmed from FIG. 1 that in the case of Example 2, a good improvement rate of moisturizing was shown.

[Table 2]

From the above results, it can be seen that when the oil-soluble film-forming agent and the water-soluble film-forming agent are mixed together, a higher moisturizing improvement rate is detected and the moisturizing is better than when the oil-soluble film-forming agent is used alone.

In addition, it can be confirmed from Table 2 that although the same content of the water-soluble film-forming agent was used in Comparative Example 3, Example 1 had a better moisture retention improvement rate.

＜ Persistence test ＞

The water-in-oil type cosmetic preparations of the above examples and comparative examples were subjected to a durability test.

Due to personal differences in human skin, artificial leather was used for objective durability testing in this experiment.

In order to test the durability, 0.05 g of each sample was applied to a 5 cm x 5 cm artificial leather with the same size and thickness and dried at 30 degrees (° C) for 2 hours. Then, the artificial leather was erected and dripped with artificial sebum to make it flow, and then the degree of collapse due to artificial sebum was analyzed by an image program, and the degree of collapse (the black part of the artificial leather) was numerically shown in Table 3 and the figure. 2.

The above numerical value is shown by digitizing the black portion of the artificial leather from which the cosmetic film is peeled off using the ImagePro Plus software.

[table 3]

As shown in the above results, it was confirmed by the naked eye and the numerical values that, compared with the case of Comparative Example 1, the collapse due to artificial sebum was significantly less in Comparative Examples 3 and 1.

From this, it can be seen that when a water-soluble film-forming agent is used in combination with an oil-soluble film-forming agent, it is less likely to collapse due to sebum and the makeup durability is good. Among them, in the case of Example 1 containing sodium polystyrene sulfonate in the inner phase, the effect was excellent.

From these results, it was confirmed that makeup durability varies depending on the type of the water-soluble film-forming agent.

＜ Evaluation of oleophobicity and staining ＞

The degree of haze and bleeding of the oil of the water-in-oil type cosmetic preparations of the above Examples and Comparative Examples were evaluated.

The detection method is as follows: each sample is spread evenly with the same thickness (60 μm) on a glass plate, and then dried at 30 degrees (° C.) for 1 hour. Next, the same amount of artificial sebum was sprinkled in the middle part, and then left at 30 degrees (° C) for 20 minutes, and then the degree of oil halo was confirmed. Thereafter, the artificial leather was placed on the sebum portion and rolled 10 times with a constant pressure (200 g of hammer) to confirm the amount of the sample that had been stained with the artificial leather, and the degree of staining was further evaluated and shown in FIG. 3.

As can be seen from FIG. 3, in Comparative Example 1, the degree of haze and bleeding of the oil were the most serious. Compared with Comparative Example 1, in Comparative Example 3 and Example 1, the degree of oil blooming or lightening was lighter, and in particular, in Example 1, which contained more sodium polystyrene sulfonate in the inner phase, and Compared with the cases of Comparative Examples 1 and 2, there was no halo phenomenon of the oil, and the bleeding was the lightest. From this, it can be known that the present invention does not touch or rub off other parts due to external activities, so the makeup lasting power is good.

In this regard, depending on the size and price of the aqueous-phase film-forming agent, the stability and usability of the dosage form are affected, and therefore, each type has different characteristics. From this, it can be seen that the choice of the type and content of the water-soluble film-forming agent has an important influence on the water-in-oil dosage form.

[Experimental Example 2] Water-in-oil type cosmetic cosmetic component for each content of water-soluble film-forming agent

[Table 4]

The manufacturing method was the same as the manufacturing method described in Experimental Example 1 above, and the staying power, stability, and usability were confirmed.

The durability was tested by the same method as in Experimental Example 1. Regarding the stability, the physical properties were compared with room temperature after storage at 45 degrees (° C) for 2 weeks. About the sense of use, a sensory test was performed. 20 female consumers aged 20 to 40 were used to test the degree of hydration felt by the objects. Here, a score of 0 to 5 was scored and the scores were averaged.

1) Stability test benchmark: O: stable, △: average, X: separation

2) Hydration test benchmark: 1: Very bad, 2: Not good, 3: Fair, 4: Good, 5: Very good

[table 5]

As shown in the above results, when the content of the aqueous film-forming agent is large, the hydration feeling is not good, and the stability is not good enough. In the case of the examples, the stability was good up to a content of 10%.

[Experimental Example 3] Water-in-oil type cosmetic preparation formulation including other types of oil-soluble film-forming agents

The durability was further tested with trimethylsiloxy silicate in the oil phase.

A water-in-oil type cosmetic composition including a film-forming agent in both the oil phase and the water phase was produced using components such as those shown in Table 6 below.

[TABLE 6]

＜ Persistence test ＞

The test was performed in the same manner as the durability test method described above, and the results are shown in Table 7 below.

[TABLE 7]

As shown in the above results, it was confirmed by numerical values that compared with Comparative Example 5, the collapse by artificial sebum was less in Example 4.

Therefore, when other types of oil-soluble film-forming agents are applied, similar to the above results, compared with the hydrolyzed wheat protein / PVP crosslinked polymer, the staying power is better when sodium polystyrene sulfonate is used. In addition, a cosmetic composition using both sodium polystyrene sulfonate and trimethylsiloxy silicate was used in combination with a hydrolyzed wheat protein / PVP crosslinked polymer and trimethylsiloxy silicate Compared with the case of use, it has more excellent moisturizing power and dosage form stability.

Industrial availability

The present invention can provide a water-in-oil type cosmetic composition having good moisturizing power. The cosmetic composition of the present invention can improve the dryness of the skin. The present invention can provide a cosmetic composition having a good skin-fitting feeling.

no

FIG. 1 is a graph showing a result of a moisture retention improvement rate when an oil-based film forming agent and an aqueous film forming agent are used together. FIG. 2 is a result of applying the cosmetic compositions of the examples and comparative examples, erecting the artificial leather, dripping the artificial sebum to make it flow, and analyzing the degree of collapse of the artificial sebum with an image program. FIG. 3 shows the evaluation results of the degree of haze and contamination of the oil of the water-in-oil type cosmetic, and Comparative Examples 1, 2, 3, and Example 1 are shown in order from the left.

Claims (9)

A water-in-oil cosmetic composition comprising two or more film-forming agents, characterized in that it includes film-forming agents different from each other in a continuous phase and a dispersed phase. The water-in-oil cosmetic composition according to claim 1, wherein the cosmetic composition is a water-in-oil or oil-in-water emulsion having a continuous phase as an oil phase. The water-in-oil type cosmetic composition according to claim 1, wherein the cosmetic composition includes an oil-based film-forming agent at 10 wt% or less. The water-in-oil type cosmetic composition according to claim 1, wherein the cosmetic composition includes the oily film-forming agent and an aqueous film-forming agent. The water-in-oil cosmetic composition according to claim 1, wherein the cosmetic composition includes the oil-based film-forming agent at 10% by weight or less, and further includes the aqueous film-forming agent. The water-in-oil type cosmetic composition according to claim 4 or 5, wherein the oily film-forming agent is selected from the group consisting of trimethylsiloxy silicate, acrylic (ester) / stearyl alcohol acrylate / poly Dimethicone methacrylate copolymer, polypropylsilsesquioxane, C30-45 alkanol dimethylsilyl polypropylsilsesquioxane, acrylic (polyester) / polytrimethylsilyl One or more of a group consisting of an oxyalkane methacrylate copolymer, an acrylic (polyester) / polydimethylsiloxane copolymer, and a phenylpropyldimethylsiloxy silicate. The water-in-oil type cosmetic composition according to claim 4 or 5, wherein the aqueous film-forming agent is 1 selected from the group consisting of sodium polystyrene sulfonate, hydroxypropyl guar, and hydroxyethyl cellulose. More than that. The water-in-oil type cosmetic composition according to claim 1, wherein the cosmetic composition has one selected from the group consisting of a foundation, a concealer, a barrier cream, a bb cream, a skin lotion, a skin cream, and a wax. The above dosage form. The water-in-oil type cosmetic composition according to claim 1, wherein the cosmetic composition includes 0.01 to 20 wt% of the oily film-forming agent with respect to the entire weight of the cosmetic composition, and relative to the total weight The cosmetic composition includes 0.01 to 12% by weight of the aqueous film-forming agent.