KR20180115121A - An oil-in-water cosmetic composition comprising high-content butter - Google Patents

Abstract

The present invention relates to an oil-in-water cosmetic composition containing high content of butter. Specifically, the present invention relates to an oil-in-water emulsified cosmetic composition containing vegetable butter and silicone oil. The oil-in-water cosmetic composition of the present invention contains high content of butter and silicone oil, without using an emulsifier, and thus shows improved texture owing to outstanding formulation stability and excellent applicability.

Description

An oil-in-water cosmetic composition comprising a high-content butter,

The present invention relates to an underwater type cosmetic composition containing a high amount of butter, and more particularly to an underwater type emulsion cosmetic composition comprising vegetable butter and silicone oil.

In general, cosmetics for increasing the moisturizing ability of the skin include Humectant which absorbs water as a moisturizing agent and Occlusive Moisturizer which prevents evaporation of water to increase moisture retention in the stratum corneum Is widely used. As the humectant, mostly polyols such as glycerin, propylene glycol, butylene glycol, and polyethylene glycol are used. However, when it is applied to the skin, there is a disadvantage that stickiness becomes worse or damp due to inherent viscosity and physical properties of polyol. On the other hand, lipid components such as ceramides, essential fatty acids or lipid complexes have been used as the closed humectant (Rawlings AV et al., J. Invest. Dermatol. 5, p731-741, 1994) Thereby deteriorating the emulsion stability. In addition, it is known that formulations containing a lamellar liquid crystal, which is undergoing a lot of research in recent years, have a structure similar to that of the skin horny structure and have an advantage of excellent moisture resistance. However, it is known that it can be used only for the composition of certain raw materials, There is a problem.

In recent years, the risk factors for skin have been increasing, and changes in dietary patterns have resulted in a slower rate of production and elimination of stratum corneum, and a reduction in the amount of moisturizing factors and lipids in the stratum corneum due to a decrease in function of keratinocytes, The number of people with skin that can not function is increasing.

Such breakdown of the skin barrier function causes cosmetic problems such as skin blackening, psoriasis and excessive keratin lifting, as well as problems of skin diseases such as dry skin and atopic dermatitis. These problems, however, are mostly preventable or alleviating if they keep the skin hydrated constantly and 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. Plant-derived butter is used to maintain skin moisture 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.

However, when such a high content of butter is included in cosmetics, the hardness of the cosmetic composition does not increase, and the stability is reduced, making it difficult to use the butter as a cosmetic. Specifically, when the temperature is lowered, recrystallization of the butter containing a high content occurs. On the contrary, when the temperature is elevated, the viscosity is decreased and the stability is drastically lowered. Particularly, since the stability of the composition must be ensured so that a uniform formulation can be maintained without phase separation even in the case of temperature change or time change, the stability of the cosmetic composition is important as an index directly related to the quality and satisfaction of the product It has meaning.

Therefore, in order to solve the above problem, a high-hardness cream having improved stability has been produced by using an emulsifier such as lecithin, wax or the like in a general product containing a high content of butter (Korean Patent Laid-Open No. 10-2015-0019669 number). However, such an existing cosmetic composition has a problem in that the hardness of the cosmetic composition is increased by the use of an emulsifying agent, and when it is applied to the skin, the spreadability, the absorbency and the overall feeling of use are lowered and the user's satisfaction is significantly lowered.

Under these circumstances, the present inventors have made intensive efforts to solve the problems of the conventional cosmetic composition as described above. As a result, the present inventors have found that when a silicone oil is used together with a high amount of butter without using any emulsifier, The inventors of the present invention have completed the present invention by confirming that it is possible to produce an underwater type emulsified cosmetic composition having excellent spreadability and feeling.

Korean Patent No. 10-1629299 (June 16, 2016)

It is an object of the present invention to provide an underwater type emulsion cosmetic composition comprising vegetable butter and silicone oil.

This will be described in detail as follows. On the other hand, each description and embodiment disclosed in the present invention can be applied to each other description and embodiment. That is, all combinations of various elements disclosed in the present invention fall within the scope of the present invention. Further, the scope of the present invention is not limited by the detailed description described below.

In one aspect of the present invention, the present invention provides an underwater type emulsion cosmetic composition comprising vegetable butter and silicone oil.

The term 'vegetable butter' in the present invention means butter made using vegetable oil. When applied to the skin, the vegetable butter is known to have effects such as softening agent, moisturizing, skin barrier function improvement, oxidation prevention, skin elasticity promotion, or skin regeneration promotion.

In addition, the vegetable butter may be contained in a high content in the cosmetic composition. Specifically, the vegetable butter may be contained in an amount of 5 to 50% by weight, more specifically 10 to 40% by weight, and more particularly 15 to 30% by weight based on the total weight of the cosmetic composition , But is not limited thereto.

However, there is a problem that the hardness of the cosmetic composition is not increased and the stability is lowered due to the high content of the vegetable butter, and the conventional cosmetic composition has increased stability by using an emulsifier, . Thus, in the present invention, a cosmetic composition excellent in both stability and feeling is obtained by using a silicone oil having a high miscibility with a high amount of butter without using an emulsifier.

At this time, when the content of the vegetable butter is less than the minimum content, effects such as moisturizing effect of the cosmetic composition, improvement of the skin barrier function and improvement of penetration are not sufficiently exhibited, and when the content exceeds the maximum content, a feeling of damp feeling But also there may be a problem in the stability of the composition.

The vegetable butter is specifically selected from the group consisting of Shea Butter, Cocoa 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, ) Or Kokum butter (Kokum Butter), and more specifically may be but is not limited thereto.

The term 'silicone oil' in the present invention means a liquid silicone resin having a relatively low degree of polymerization and is known to have a low freezing point and a small change in viscosity depending on temperature. It is generally used as gamma material of machinery, transformer oil, waterproofing agent of petroleum.

However, it is not known at all that the silicone oil can be generally used in the cosmetic composition in place of, or in a role similar to, an emulsifying agent. On the other hand, the present invention solves the problem of low stability of the cosmetic composition due to a high content of vegetable butter, and when a silicone oil having good compatibility with vegetable butter is used as a base oil, a cosmetic composition having excellent stability and feeling It is possible to do so. That is, for the purpose of the present invention, the silicone oil is an essential component for enhancing stability and feeling.

Conventional cosmetics containing a large amount of vegetable butter contain an emulsifying agent such as lecithin or wax in order to solve the problem of stability which is deteriorated due to a high content of butter, but the emulsifying property, the absorbing power, the moisturizing power and the feeling of overall feeling are remarkably low There is a problem to lose. Thus, the present invention can provide a cosmetic composition having improved formulation stability and feel by using a high-content butter and a silicone oil having good compatibility therewith as a base oil without containing the emulsifier.

Specifically, the silicone oil may be contained in an amount of 10 to 200% by weight based on the total weight of the vegetable butter, more specifically, 20 to 150% by weight based on the total weight of the vegetable butter. More specifically, But it is not limited thereto. The silicone oil may be included in an amount of 5 to 30% by weight based on the total weight of the cosmetic composition, specifically 10 to 15% by weight.

At this time, if the silicone oil content is less than the above minimum content or exceeds the above maximum content, there may be a problem in stability of the composition, and there may be problems such as spreadability, absorbency, and feeling of use of the cosmetic composition.

Specifically, the silicone oil may be selected from the group consisting of Phenyl trimethione, Dimethicone, Cyclomethicone, Polydimethylsiloxane, Silicone Gum, Cyclopentasiloxane, And more specifically cyclopentasiloxane, but is not limited thereto.

The term " oil-in-water emulsion " in the present invention is an emulsion in which oil droplets are dispersed in water and is also referred to as o / w type emulsion. It is highly conductive and can be diluted with water. Milk and mayonnaise are typical examples. The cosmetic composition of the present invention may be a water-in-oil emulsified cosmetic composition containing silicone oil as a base oil and sodium acylate copolymer as a thickening agent and containing a high amount of vegetable butter but no emulsifier.

The cosmetic composition of the present invention may further comprise a sodium acrylate copolymer.

The term 'sodium acrylate copolymer' in the present invention is a kind of a thickening agent which increases the viscosity of a cosmetic composition and improves emulsion stability, and can be used in combination with various thickening agents.

Specifically, the sodium acrylate copolymer may contain 0.1 to 5% by weight, more specifically 0.2 to 3% by weight, of the copolymer, based on the total weight of the cosmetic composition, and more specifically 1% But are not limited thereto.

If the content of the sodium acrylate copolymer is less than the above-mentioned minimum content, the stability of the composition may be deteriorated. If the content exceeds the above-mentioned maximum content, the viscosity and hardness may be excessively increased.

The cosmetic composition of the present invention may be characterized in that it does not contain an emulsifier.

Further, the cosmetic composition of the present invention may be one which has improved formulation stability, spreading ability, absorption power, moisturizing power, warmth or overall feeling by using a silicone oil having good compatibility with vegetable butter.

The term " emulsifier " in the present invention means a substance which allows two kinds of liquids which are not mixed with each other to be stably mixed. As a non-limiting example of the emulsifier, 'lecithin' refers to hydrogenated lecithin, which is mainly used in cosmetic cosmetics, and has a hydrophilic part and a hydrophobic part. In general, a product containing a high content of butter secures the stability of the hardness cream using an emulsifying agent such as lecithin, but it has a problem of increasing hardness, reducing spreadability and feeling.

Thus, the present invention provides a cosmetic composition containing no emulsifier by using a silicone oil as a base oil together with a high content of vegetable butter. Unlike the conventional butter cosmetic composition using an emulsifier, the cosmetic composition has an advantage of showing excellent stability, spreadability, absorption power, moisturizing power, freshness or feeling. These advantages have drastically solved the problem that a high-content butter cosmetic composition containing an emulsifier contains.

On the other hand, cosmetic compositions not using an emulsifier are known in the conventional cosmetic compositions, but there is no known method for preparing a cosmetic composition in which the stability and feeling of use of the composition are improved without using an emulsifier while using a high amount of vegetable butter. There is no known method for preparing a cosmetic composition in which the stability and feeling of use of the composition are improved by using a high amount of vegetable butter and silicone oil. On the other hand, in the present invention, it has been confirmed that silicone oil improves not only the formulation stability due to a high content of butter, but also the feeling of use such as spreadability and absorbency of the cosmetic composition, and thereby the cosmetic composition containing a high content of butter Silicone oil is the most suitable additive.

In the present invention, the term 'stability' is used as a criterion for a change in the quality of a cosmetic composition depending on a change with time, a pH change, or a temperature change, and the layer separation, color, It can be judged whether or not it is deteriorated.

In order to compare the properties and safety of the cosmetic composition according to one embodiment of the present invention, the stability of the formulation was visually observed at a high temperature of 45 ° C for one month and a low temperature of 0 ° C and -20 ° C (5 times of cold- , There was a problem that stability was unstable such that a composition containing butter and a high content of butter but not containing silicone oil was separated at a low temperature and a high temperature. However, a separate emulsifier It was confirmed that the composition containing the silicone oil and the sodium acrylate copolymer together was very excellent in stability of the composition despite the change in temperature and time (Table 2).

The term " feeling " in the present invention means satisfaction with a product that can be recognized when using the cosmetic composition. In the present invention, the term " dullness " is a concept that can be included in the feeling of use, and refers to a characteristic of application property, touch feeling, etc., which can be recognized when the cosmetic composition is applied to the skin. The term 'absorption power' in the present invention means the extent to which the cosmetic composition is absorbed into the skin as it is applied to the skin. In the present invention, the term 'moisturizing power' means a degree of increasing or maintaining moisture content in the skin by being applied to the skin. The term " freshness " in the present invention means a degree of clean and cool feeling that the user feels and feeling after the cosmetic composition is applied to or applied to the skin.

In an embodiment of the present invention, 50 women were evaluated for feeling of use of the cosmetic composition. As a result, the cosmetic composition containing a high content of butter and an emulsifying agent such as lecithin showed remarkable spreadability, absorbency, But the cosmetic composition containing a high amount of vegetable butter and silicone oil without an emulsifier was found to be excellent in allergenicity, absorbency, moisturizing power, freshness, and overall feeling in sensory evaluation (Table 3).

The cosmetic composition of the present invention may contain 10 to 50% by weight of an oil component, and 50 to 90% by weight of an aqueous component based on the total weight of the cosmetic composition.

Specifically, the vegetable butter and the silicone oil are contained as an oil phase component, and the sodium acrylate copolymer may be contained as an aqueous phase component.

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. The moisturizing agent includes, but is not limited to, glycerin, butylene glycol, 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%, preferably 2.0 to 15%, based on the total weight of the cosmetic composition of the present invention.

 The cosmetic composition of the present invention can be prepared by selecting components contained in a conventional emulsified cosmetic composition, that is, an antioxidant, a polyhydric alcohol, a moisturizing component such as hyaluronic acid, various vitamins, preservatives, coloring agents, fragrances, May be further added.

The water-in-oil type cosmetic composition of the present invention uses a silicone oil as a base oil in spite of a high content of butter, and exhibits an excellent feeling of use because it is excellent in formulation stability without using an emulsifier and excellent in spreadability.

Hereinafter, the present invention will be described in more detail with reference to examples. However, these examples are for illustrative purposes only, and the scope of the present invention is not limited to these examples.

Manufacturing example  One: High-content  Underwater type oil painting containing butter Cosmetics  Composition and Comparative example  Produce

Emulsions were prepared by controlling the kinds and contents of butter, surfactant and thickener according to the raw materials and composition ratios shown in Table 1 below. As the butter, shea butter was used. As the oils, oligo oil, hydrogenated polydecene, triethylhexanone, or cyclopentasiloxane was used as the silicone oil. In addition, sodium acrylate copolymer or carbomer was used as the incrementing agent. As in a commonly used method, the oil phase was slowly added to the prepared water phase to complete an underwater type emulsion cosmetic composition.

Raw material name
(weight %) Example
One Example 2 Example
3 Comparative Example
One Comparative Example
2 Comparative Example
3 Comparative Example
4 Comparative Example
5 Comparative Example
6 One Purified water Balance Balance Balance Balance Balance Balance Balance Balance Balance 2 Disodium
DTI 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 3 glycerin 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 4 Butylene glycol 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 3.00 5 Sodium acrylate copolymer 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 6 Carbomer 0.5 7 lecithin One One 8 Sheer butter 20.0 30.0 15.0 20 20 20 20.0 20.0 9 Cyclopentasiloxane 10.0 10.0 15.0 10.0 10 Olive oil 10 11 Hydrogenated polydecene 10 12 Triethylhexanone 10 13 corrector 0.5 14 TOTAL 100 100 100 100 100 100 100 100 100

Examples 1 to 3 prepared with the raw material composition ratios shown in Table 1 are oil-in-water emulsified cosmetics containing a high content of 15 to 30% by weight of shea butter, which is vegetable butter. In Examples 1 to 3, silicone oil (cyclopentasiloxane) was used as the base oil and sodium acrylate copolymer as the thickener, and the weight ratio of each component was slightly added.

Comparative Example 1 is a cosmetic composition containing no shea butter and gradually increasing the amount of a carbomer. In Comparative Examples 2 to 4, a cosmetic composition containing 20 wt% of shea butter was used. As the base oil, an oil other than silicone oil, i.e., olive oil, hydrogenated polydecene or triethylhexanone was used, Used a sodium acrylate copolymer. On the other hand, in Comparative Example 5, a cosmetic composition containing a high content of 20% by weight of vegetable butter and a lecithin as a silicone oil and an emulsifier was prepared. In Comparative Example 6, 20% by weight of vegetable butter, , And further comprising lecithin as an emulsifying agent, wherein a cosmetic composition containing no silicone oil is prepared.

Experimental Example  One: High-content  Underwater type oil painting containing butter Cosmetic  Emulsion stability evaluation

In order to compare the properties and stability of the cosmetic compositions prepared in Examples 1 to 3 and Comparative Examples 1 to 6, a high temperature condition of 45 占 폚 for one month from the date of manufacture and a high temperature condition of 0 占 폚 and -20 占 폚 ), The stability of the formulation was visually observed. The results are shown in Table 2 below.

sample Judgment result Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Comparative Example 6 -20 ° C
(5 times in cold weather) ○ ○ ○ ■ ■ ■ ■ ○ ■ 4 ℃ ○ ○ ○ ■ △ △ ■ ○ ○ 25 ℃ ○ ○ ○ ■ △ △ △ ○ ○ 45 ° C ○ ○ ○ ■ ■ ■ ■ ○ ○ 50 ℃ ○ ○ ○ ■ ■ ■ ■ ○ △

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

As can be seen from Table 2 above, Comparative Example 1, which did not contain a high content of butter, silicone oil and sodium acrylate copolymer, Comparative Examples 2 to 4, which did not contain silicone oil and sodium acrylate copolymer, There has been a problem that the stability is very insecure enough that it is difficult to find a cosmetic composition such as a layer separation occurs at a low temperature and a high temperature.

On the other hand, a cosmetic composition prepared according to Examples 1 to 3, containing a silicone oil and a sodium acrylate copolymer together with a high content of butter, and a cosmetic composition prepared according to Comparative Example 5, wherein lecithin as an emulsifier The composition of the present invention was found to have excellent stability despite temperature change and time change.

On the other hand, the cosmetic composition prepared according to Comparative Example 6 and containing no silicone oil and containing an emulsifier showed that the stability of the composition was somewhat lowered at a certain temperature condition such as a low temperature or a high temperature condition.

In addition, although the cosmetic composition prepared according to Comparative Example 5 contained formulation of an emulsifier such as lecithin and silicone oil in spite of a high content of butter, the composition stability of the composition of Comparative Example 6 contained an emulsifier, It was confirmed that the oil was not contained and the stability was lower than that of the composition of Comparative Example 5. [

On the other hand, it has been confirmed that the cosmetic composition containing a high content of butter of the present invention has excellent stability not only at room temperature but also at a low temperature or a high temperature, even though an emulsifier such as lecithin is not further used.

Experimental Example  2: Feeling  evaluation

50 women aged 25 to 45 years were subjected to evaluation of the feeling of use when applying the cosmetic composition of Examples 1 to 3 and Comparative Example 5 to evaluate the possibility of use as a cosmetic product and the satisfaction level felt by the user Respectively.

Specifically, the cosmetic compositions of Examples 1 to 3 and the cosmetic composition of Comparative Example 5 were applied to both sides of the face, and the feeling of use was evaluated according to the following evaluation criteria. The results are shown in Table 3.

On the other hand, in the case of the cosmetic compositions of Comparative Examples 1 to 4, as described in Experimental Example 1, the formulation stability could not be secured due to the phase separation, and thus it was difficult to produce the cosmetic composition.

Item Brittle absorptivity Moisture power Freshness Overall
Feeling Example 1 4.3 4.2 4.0 4.3 4.3 Example 2 4.1 4.1 4.3 4.1 4.2 Example 3 4.3 4.2 3.9 4.3 4.2 Comparative Example 5 3.1 3.3 4.0 3.3 3.4 Comparative Example 6 3.5 3.6 4.0 3.5 3.6

<Evaluation Criteria>

Poor: 1, Poor Poor: 2, Moderate: 3, Slightly Good: 4, Very Good: 5

As can be seen from the above Table 3, the cosmetic composition of Comparative Example 5 in which an emulsifier such as lecithin was added in order to secure the formulation stability as containing a high amount of vegetable butter showed high stability in Experimental Example 1 Even when applied to the skin, it was confirmed that the spreadability, the absorbency, the freshness, and the overall feeling of use were very poor.

In addition, even in the case of the cosmetic composition of Comparative Example 6 containing an emulsifying agent instead of silicone oil, it was found that the feeling of feeling felt by the user was very low because of the wettability, the absorbency, the warmth, and the overall feel.

On the other hand, the cosmetic composition of Examples 1 to 3 contains a high content of shea butter, which is a vegetable butter, but does not contain an emulsifying agent such as lecithin, and thus has excellent wetting, absorbency, moisturizing power, .

Therefore, the cosmetic composition containing a high amount of vegetable butter in the past contains an emulsifier such as lecithin in order to ensure the stability. However, when a high amount of vegetable butter and silicone oil are used together without containing an emulsifier, It can be understood that not only the stability of the formulation can be ensured but also the feeling of use such as spreadability, absorbency, moisturizing power and the like is further improved.

From the above description, it will be understood by those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. In this regard, it should be understood that the embodiments described above are illustrative in all aspects and not restrictive. The scope of the present invention should be construed as being included in the scope of the present invention without departing from the scope of the present invention as defined by the appended claims.

Claims (12)

Vegetable butter, and silicone oil.
The cosmetic composition of claim 1, further comprising a sodium acrylate copolymer.
The cosmetic composition according to claim 1 or 2, wherein the cosmetic composition does not contain an emulsifier.
The cosmetic composition according to claim 3, wherein the cosmetic composition has improved stability or feeling by using a silicone oil excellent in miscibility with vegetable butter.
The cosmetic composition according to claim 2, wherein the vegetable butter and the silicone oil are contained as an oil phase component, and the sodium acrylate copolymer is contained as an aqueous phase component.
The cosmetic composition according to claim 1, wherein the vegetable butter is contained in an amount of 10 to 40% by weight based on the total weight of the cosmetic composition.
The cosmetic composition according to claim 1, wherein the vegetable butter is contained in an amount of 15 to 30% by weight based on the total weight of the cosmetic composition.
The cosmetic composition according to claim 1, wherein the silicone oil is contained in an amount of 10 to 200% by weight based on the total weight of the vegetable butter.
The cosmetic composition according to claim 1, wherein the silicone oil is contained in an amount of 30 to 100% by weight based on the total weight of the vegetable butter.
The cosmetic composition according to claim 2, wherein the sodium acrylate copolymer is contained in an amount of 0.1 to 5% by weight based on 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, Wherein the composition is at least one vegetable butter selected from the group consisting of Grape Seed Butter and Kokum Butter.
The method of claim 1, wherein the silicone oil is selected from the group consisting of Phenyl trimethione, Dimethicone, Cyclomethicone, Polydimethylsiloxane, Silicone Gum, and Cyclopentasiloxane Wherein the cosmetic composition is at least one silicone oil selected from the group consisting of Cyclopentasiloxane.