KR20150019669A - Water-in-Oil Type Emulsified Cosmetic Composition Containing High Content Butter - Google Patents

Abstract

The present invention relates to a water-in-oil type emulsified cosmetic composition which is excellent in moisturizing skin by containing a butter in a large amount and has a high stability even at high temperatures. More specifically, the cosmetic composition includes the vegetable butter and lecithin as an emulsifier, and is properly mixed with a sodium acrylate copolymer in order to maintain viscosity. The cosmetic composition shows excellent emulsifying stability and has excellent formulation stability even at high temperatures. Moreover, the cosmetic composition has excellence in texture, in moisturizing properties, and in transmission to the skin. Therefore, the cosmetic composition has high stability and excellent quality of appearance, sleek texture, soft skin texture, and increased gloss.

Description

[0001] The present invention relates to a water-in-oil type emulsified cosmetic composition containing a high content of butter,

The present invention relates to an underwater type emulsion cosmetic composition comprising a high content of butter.

Generally, in cosmetics, humectant is used as a moisturizer to increase the moisturizing ability of the skin, and occlusive moisturizer (Occlusive Moisturizer) to prevent moisture evaporation to increase moisture retention in the stratum corneum Is widely used. Most of the hugh martens are polyols such as glycerin, propylene glycol, butylene glycol, and polyethylene glycol. However, when they are applied to skin, there is a disadvantage that they are sticky or damp due to inherent viscosity and physical properties of polyol. (Rawlings AV et al., J. Invest. Dermatol., 5, p731-741, 1994). In the emulsification formulation, the emulsified interfacial membrane was disturbed and the emulsification stability . In addition, the formulations containing the lamellar liquid crystals, which have been undergoing much research until recently, are known to have excellent moisturizing power because they are similar to the keratinous structures of the skin, but they can be used only for the composition of certain raw materials,

In recent years, the risk factors for skin are increasing, and changes in dietary patterns slow down the generation and detachment of the stratum corneum, and the decrease in the amount of moisturizing factors and lipids in the stratum corneum due to the deterioration of the keratinocyte cells, There are increasing numbers of people who have skin that can not exert their function.

Such breakdown of the skin barrier function causes skin problems such as skin dryness and atopic dermatitis as well as cosmetic problems such as skin blackening, psoriasis and excessive keratin lifting. These problems, however, are mostly preventable or alleviable if the skin is kept hydrated to give firmness and flexibility to the stratum corneum. Recently, moisturizing cosmetics have been developed that exclude chemical substances and use natural substances derived from plants as raw materials to keep skin moisture constant. To maintain skin moisture, plant-derived butter is widely used in such cosmetics. Butter is a fat extract of plant fruit or seed and has a melting point that is close to human body temperature. Among them, vegetable butter is a vegetable fat and has a solid or solid semi-solid shape depending on the temperature. In general, vegetable butter has a property of regulating the skin. It can have softener and moisturizing properties, as well as improving skin barrier function, enhancing penetration, preventing oxidation, and the like.

Examples include plant-derived butter such as Cocoa Butter, Shea Butter, Pistachio Butter, Avocado Butter, Mango Butter, Soy Butter, It is recommended to use Almond Butter, Olive Butter, Cupuacu Butter, Jojoba Butter, Macadamia Seed Butter, Apricot Butter, Grape Seed Butter, Seed Butter, Kokum Butter, and the like.

When a high content of butter, which is a raw material having excellent softening effect, is contained in the cosmetic composition, it has good merits while dissolving at a skin temperature, and having excellent moisture retention and moisturizing properties. However, when a large amount of butter is added, the recrystallization of the butter is caused at a low temperature and the viscosity and stability of the formulation are lowered due to a low melting point of the butter at a high temperature.

Accordingly, the inventors of the present invention have conducted research to solve the problem that a high content of butter is included and that the viscosity drops at a high temperature and flows down. As a result, it has been found that the use of lecithin as an emulsifying agent and sodium acrylate copolymer The present inventors have developed a technique for completing a cosmetic composition containing a high content of butter and having excellent high temperature stability. That is, a composition comprising lecithin as an emulsifier in an oil-in-water emulsion cosmetic composition and sodium acrylate copolymer as an aqueous phase enhancer and having a high content of butter has high stability at a high temperature and excellent appearance quality. In addition, since the viscosity is maintained at a high temperature without falling, the application feeling by the butter with a high content, the smooth skin feel, and the excellent moisture feeling are further improved.

It is therefore an object of the present invention to provide an underwater type emulsion cosmetic composition comprising a high content of vegetable butter, lecithin and sodium acrylate copolymer.

In this case, the vegetable butter is characterized by being 10 to 50% by weight based on the total weight of the cosmetic composition.

Further, the composition has a characteristic of containing 50 to 90% by weight of an aqueous phase component and 10 to 50% by weight of an oil phase component based on the total weight of the cosmetic composition.

The water-in-oil type emulsion cosmetic composition containing the high-content butter of the present invention is excellent in emulsion stability (Test Example 1) and excellent in formulation stability even at a high temperature (Test Example 2). In addition, the cosmetic of the present invention not only has excellent feeling and moisturizing power (Test Example 3), but also has excellent skin conductivity (Test Example 4). Therefore, the cosmetic composition of the present invention has a high stability and an excellent appearance quality, and can have a smooth feeling of use, a smooth skin feel, and an improved sense of moistureiness.

The present invention relates to an underwater type emulsion cosmetic composition comprising a high content of vegetable butter, lecithin and sodium acrylate copolymer.

More particularly, the present invention relates to an aqueous type cosmetic composition comprising a high content of vegetable butter and lecithin as an oily component and a sodium acrylate copolymer as an oily component, .

In the present invention, the vegetable butter is selected from the group consisting of Cocoa Butter, Shea Butter, Pistachio Butter, Avocado Butter, Mango Butter, Soy Butter, But not limited to, Almond Butter, Olive Butter, Cupuacu Butter, Jojoba Butter, Macadamia Seed Butter, Apricot Butter, Grape Seed Butter, Butter, Kokum Butter, and the like.

Shea butter is a vegetable oil extracted from the fruit of a shea tree, mainly used as a skin moisturizer and softener, and also used for food. Cocoa butter is a fatty substance extracted from cacao mass. It contains natural antioxidants and prevents rancidity. It can be used for various purposes because it can be kept for 2 ~ 5 years. Mango butter is a hardened oil that has been squeezed out by squeezing the seeds of mangoes and can act as an emollient to form a thin protective film on the surface of the skin, thereby preventing excessive moisture loss and effectively removing keratin. Avocado butter is made from the oil extracted from the avocado shell and is mainly used in skin care because of its high fat content. Gives the skin gentle, moisturized & restores pH balance Finally, jojoba butter is a type of coagulated jojoba oil. Similar to sebum, it has excellent penetration ability and helps maintain skin balance.

According to a preferred embodiment of the present invention, the vegetable butter is contained in an amount of 10-50 wt%, preferably 20-40 wt%, based on the total weight of the cosmetic composition. If the content of the vegetable butter is less than the minimum content, the intended effect of the present invention can not be exhibited to the maximum extent. If the content of the vegetable butter is more than the maximum content, a feeling of damp feeling of too much oiliness may appear, there is a problem.

In the present invention, 'lecithin' refers to hydrogenated lecithin commonly used in cosmetics for oil painting. It has a hydrophilic part and a hydrophobic part, mainly used as an emulsifier.

According to a preferred embodiment of the present invention, the lecithin is contained in an amount of 0.1 wt% to 10 wt%, preferably 0.5 wt% to 5 wt%, based on the total weight of the cosmetic composition. At this time, when the content of lecithin is less than the above-mentioned minimum content, the intended effect of the present invention can not be exhibited as much as possible, and if it exceeds the maximum content, there may be a problem in composition stability.

In the present invention, the 'sodium acrylate copolymer' is an increasing agent which is mainly used for the purpose of increasing the viscosity of the cosmetic and improving the emulsification stability of the cosmetic, and has a characteristic of realizing a unique appearance in combination with various various thickeners.

According to a preferred embodiment of the present invention, the sodium acrylate copolymer is contained in an amount of 0.1% by weight to 5% by weight, preferably 0.2% by weight to 2% by weight based on the total weight of the cosmetic composition. If the content of the sodium acrylate copolymer is less than the above-mentioned minimum content, a problem may arise in the stability of the composition. If the content exceeds the maximum content, the viscosity and hardness may be too high, which may cause difficulty in production.

The cosmetic composition of the present invention may further include a moisturizing agent to improve the cold / warm stability of the emulsion and increase the moisture retention. Examples of the moisturizing agent include, but are not limited to, glycerin, butyleneglycol, dipropylene glycol, propylene glycol, polyethylene glycol, betaine, trehalose and the like. The moisturizing agent is preferably contained in the aqueous phase of the cosmetic composition of the present invention.

According to a preferred embodiment of the present invention, the moisturizing agent is contained in an amount of 0.1 to 20% by weight, preferably 1.0 to 10% by weight, based on the total weight of the cosmetic composition of the present invention.

In addition, the cosmetic composition of the present invention can be prepared by adding components selected in the conventional emulsified cosmetic composition, that is, an antioxidant, a polyhydric alcohol, a moisturizing component such as hyaluronic acid, various vitamins, preservative, colorant, fragrance, .

Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood by those skilled in the art that these embodiments are only for describing the present invention in more detail and that the scope of the present invention is not limited by these embodiments in accordance with the gist of the present invention .

Examples 1 to 5 and Comparative Examples 1 to 4: Preparation of a water-in-oil type emulsion cosmetic composition containing a high content of butter

The emulsions were prepared by the method according to the present invention at the raw materials and composition ratios shown in Table 1 below. Specifically, experiments were conducted by adjusting the kinds and contents of butter, surfactant and thickener according to the composition shown in Table 1 below. Shear butter was used as the butter, and one or more of surfactants such as lecithin, glyceryl stearate, phage-100 stearate and cetearyl alcohol were selected and used. Also, one of the sodium acrylate copolymer, ammonium acryloyldimethyltaurate / Vpicopolymer was used as the incrementing agent.

The oil phase was slowly added to the prepared water phase, which is a general method, to complete an underwater type emulsion cosmetic composition.

division Main Category Raw material Composition ratio (% by weight) Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Awards One menstruum Purified water 81.98 76.98 71.98 61.98 41.98 64.98 64.98 70.98 31.98 2 Metal blocker Disodium iodide 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 3 Moisturizer glycerin 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 4 Moisturizer Butylene glycol 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 5 Incrementer Sodium acrylate copolymer 0.50 0.50 1.00 1.00 1.00 1.00 - - 1.00 Ammonium acryloyldimethyltaurate / Vpicopolymer - - - - - - 1.00 1.00 - Paid 5 Moisturizer Sheer butter 10.00 15.00 20.00 30.00 50.00 20.00 20.00 20.00 60.00 6 menstruum Dimethicone 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 2.00 7 Surfactants lecithin 0.50 0.50 1.00 1.00 1.00 - - 1.00 1.00 Glyceryl stearate - - - - - 3.50 3.50 - - FAGE -100 stearate - - - - - 1.50 1.50 - - Cetearyl alcohol - - - - - 2.00 2.00 - - Total 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 100.00 Emulsion stability ○ ○ ○ ○ ○ ○ ○ ○ ■

(Good emulsion stability:?, Separation:?)

Test Example  One. High-content  Underwater type oil painting containing butter Cosmetic  Emulsion stability

Examples 1 to 5 and Comparative Examples 1 to 3, which were prepared at the raw material composition ratios shown in Table 1, had an excellent emulsion stability as an underwater type emulsion cosmetic composition having a shear butter content of 10 to 50 wt%. In Examples 1 to 5, lecithin was used as a surfactant and sodium acrylate copolymer as an increasing agent. The content of shea butter in Examples 1 to 5 was 10 to 50 wt%, and an oil-in-water type emulsion cosmetic composition containing a high content of butter with excellent emulsification stability was completed. In Comparative Examples 1 and 2, the content of the shear butter was 20% by weight, glyceryl stearate, phage-100 stearate and cetearyl alcohol were used as surfactants, and the incremental amounts of sodium acrylate copolymer and ammonium acrylate Ylidmethyltaurate / Vpicopolymer were used, respectively. Comparative Examples 1 to 2 A water-in-oil type cosmetic composition containing butter in a high content and excellent in emulsion stability was completed.

In Comparative Example 3, the content of shear butter was 20% by weight. Lecithin was used as an emulsifying agent, and ammonium acryloyldimethyltaurate / Vpicopolymer was used as an increasing agent. Comparative Example 3 Also, excellent emulsion stability was exhibited.

In Comparative Example 4, the content of shear butter was 60% by weight, and lecithin as an emulsifying agent and sodium acrylate copolymer as an increasing agent were used. As can be seen from the results in Table 1, when the content of shea butter was 60% by weight, the stability of the oil-in-water type cosmetic composition was unstable and the oil was floated.

Test Example 2. Evaluation of stability

The stability evaluation of the cosmetic compositions of Examples 1 to 5 and Comparative Examples 1 to 4 was carried out. As a method of stability evaluation, the degree of separation of the emulsion after 1 month at 4 ° C, room temperature (25 ° C), 45 ° C and 60 ° C test was observed after the preparation and the results are shown in Table 2.

Example 1 Example 2 Example 3 Example 4 Example 5 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 4 ℃ ○ ○ ○ ○ ○ ○ ○ ○ ■ 25 ℃ ○ ○ ○ ○ ○ ○ ○ ○ ■ 45 ° C ○ ○ ○ ○ ○ ■ ■ ○ ■ 60 ° C ○ ○ ○ ○ ○ ■ ■ ■ ■

<Judgment Criteria -?: Good,?: Normal,?: Separation>

As can be seen from the above Table 2, those prepared according to Examples 1 to 5 were excellent in surface appearance according to the temperature, naturally melted at the skin temperature during skin application, and imparted excellent moisturizing properties. However, Comparative Examples 1 to 3, in which lecithin and sodium acrylate copolymer were not used at the same time, showed excellent phase stability at low temperature and room temperature. However, at a high temperature of 45 ° C and 60 ° C, viscosity decreased, And it is confirmed that there is abnormality in stability.

As a result, it was confirmed that the high-fat-type emulsion cosmetic composition containing the butter of the present invention has excellent phase stability not only at room temperature but also at high temperature.

Test Example 3. Evaluation of feel and moisture

The sensory evaluation such as feel and feeling of moisturization was performed on the water-in-oil type emulsion cosmetic composition containing a high content of butter of the present invention. Example 1 in which the content of butter was 10% by weight, Example 3 in which 20% by weight was used, and Example 5 in which 50% by weight was used were used to evaluate the feeling of using the product in detail, And 4.5 million points were evaluated. The results are shown in Table 3.

Brittle absorptivity Freshness Moisture power Moisture persistence Overall satisfaction Example 1 4.1 4.2 4.1 4.0 4.0 4.08 Example 3 4.1 4.2 4.0 4.2 4.0 4.10 Example 5 4.2 4.1 3.9 4.5 4.4 4.22

As can be seen from the results of Table 3, the cosmetic compositions of Examples 1, 3 and 5 of the present invention having a shear butter content of 10 to 50% by weight of vegetable butter exhibited excellent wetting properties such as spreadability, absorbency, freshness, moisturizing power, , Respectively. Especially, it was confirmed that the higher the butter content, the higher the satisfaction level in the moisture and moisture holding performance.

Test Example 4. Measurement of skin conductivity

The skin conductivity was measured on an underwater type emulsion cosmetic composition containing a high content of butter of the present invention. In general, the skin conductivity is proportional to the amount of water in the skin. Therefore, in order to examine the effect of improving the moisturizing ability of the skin, an experiment for evaluating the moisturizing effect as skin conductivity was performed as follows. Twenty-five to twenty persons without skin disease were divided into two groups each consisting of 20 persons per one group. In each group, the composition of the oil-in-water type emulsion cosmetic composition containing the high content of butter prepared in Table 1 above, The creams of Example 3 and Example 5 were applied to the face and forehead twice a day for one month. The skin conductivity was measured using a corneometer (CM820 courage Khazaka electronic GmbH, Germany) under the constant temperature and humidity conditions (24 ° C, 40% humidity) before the start of application, and the skin conductivity was measured at 1 week, 2 weeks, The skin conductivity was measured and the rate of increase was evaluated. The results are shown in Table 4 below.

 Skin Conductivity Growth Rate (%) sample After 1 week after 2 weeks After 4 weeks Example 1 42 49 54 Example 3 48 60 63 Example 5 54 69 74

As shown in the results of Table 4, the cosmetic compositions of Examples 1, 3 and 5 of the present invention having a shear butter content of 10 to 50 wt% as vegetable butter all exhibited excellent skin moisture content, The improvement effect was also excellent. In particular, the higher the butter content, the better the skin conductivity increase rate.

Claims (5)

Vegetable butter, lecithin, and sodium acrylate copolymer,
Wherein the content of the vegetable butter is in the range of 10 wt% to 50 wt% with respect to the total weight of the cosmetic composition.
The vegetable butter according to claim 1, wherein the vegetable butter is selected from the group consisting of Shea Butter, Cocoa Butter, Pistachio Butter, Avocado Butter, Mango Butter, Soy Butter ), Almond Butter, Olive Butter, Cupuacu Butter, Jojoba Butter, Macadamia Seed Butter, Apricot Butter, Grape Seed Butter, (Grape Seed Butter), and Kokum Butter.
The underwater type emulsion cosmetic composition according to claim 1, wherein the vegetable butter and the lecithin are contained as an oil phase component, and the sodium acrylate copolymer is contained as an aqueous phase component. The water-in-oil type cosmetic composition according to claim 1, wherein the lecithin is contained in an amount of 0.1% by weight to 10% by weight based on the total weight of the cosmetic composition.
The water-in-oil type cosmetic composition according to claim 1, wherein the sodium acrylate copolymer is contained in an amount ranging from 0.1% by weight to 5% by weight based on the total weight of the cosmetic composition.