KR20060133372A - Gel typed cosmetic composition in the form of water-in-silicon(w/s) type emulsion - Google Patents

Abstract

A gel type water in silicone emulsified cosmetic composition is provided to show excellent spreadability and make-up maintenance, and have good long time preservation stability. The gel type water in silicone emulsified cosmetic composition comprises 1-30 wt.% of a silicone-based cross-polymer selected from the group consisting of dimethicone cross-polymer, dimethicone/vinyl dimethicone cross-polymer and dimethicone PEG10/15 cross-polymer, and 0.1-10 wt.% of an inorganic thickening agent selected from the group consisting of bentonite, hectorite and a mixture thereof.

Description

Gel typed cosmetic composition in the form of water-in-silicon (W / S) type emulsion}

The present invention relates to a gel type silicone heavy water (W / S) emulsion type cosmetic composition.

In general, emulsified cosmetic composition forms are roughly divided into oil-in-water (O / W) emulsion type, water-in-oil (W / O) emulsion type. Oil-in-water (O / W) emulsifying type is a hydrophilic type, the feel is soft and soft, but there is a disadvantage that the cosmetic persistence and water resistance is poor. In order to remedy this drawback, a water-in-oil (W / O) emulsified type has been developed. However, the water-in-oil (W / O) emulsified type has excellent cosmetic persistence and water resistance, but has a disadvantage in that it is a burden on the skin due to stickiness, oiliness, waxy feeling, and poor usability such as spreadability and spreadability. In particular, the conventional emulsion composition contains a large amount of hydrocarbon oils such as liquid paraffin, squalane, and ester (including triglyceride) oils, olive oil, cottonseed, vegetable oils such as macadamia oil, etc., these oils are skin irritant It is known that this does not satisfy the needs of consumers for hypoallergenic cosmetics.

On the other hand, silicone oil is different depending on its molecular weight and structure, but due to its elastic and three-dimensional structure, it is very light and has excellent usability and skin stability such as malleability and spreadability, as well as excellent water resistance and emollient effect. Efforts have been made to use it, and development of silicone water-in-oil (W / S) emulsified cosmetic compositions using silicone oil as a trauma has been made continuously.

Conventional techniques for such water-in-silicone (W / S) emulsion cosmetic compositions are disclosed in a number of documents, including US Pat. No. 4,514,22, Published Patent Publication Nos. 2000-0072916 and WO 9509598.

By the way, in general, the silicone water-based (W / S) emulsion cosmetic composition is not easily erased by sweat or water, but is easily erased by oil components, and the makeup state does not last long such as staining or lumping after sebum after a long time. There is this. In addition, the wax is generally used to increase the viscosity, and in this case, there is a disadvantage in that the feeling of use is poor, such as stiffness and deterioration of application.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, and provides a gel-type water-in-silicone (W / S) emulsion cosmetic composition of the gel type not only excellent application and sustainability of makeup, but also good long-term storage stability. It aims to do it.

In order to achieve the above object, the present invention, based on the total weight of the composition, 1 to 30% by weight of the silicone-based crosspolymer; and 0.1 to 10% by weight of the inorganic thickener; gel type silicone water-in-oil emulsion cosmetics comprising To provide a composition.

At this time, the silicon-based cross-polymer, it is preferable to use a dimethicone crosspolymer, a dimethicone / vinyl dimethicone crosspolymer, a dimethicone PEG10 / 15 crosspolymer or the like alone or in combination thereof. In addition, it is preferable to use bentonite, hectorite, or the like individually or in combination thereof.

Hereinafter, the present invention will be described in detail.

The inventors of the present invention have continued to study the cosmetic composition excellent in the use, such as application properties while the cosmetic effect lasts a long time, using a silicone type cross-polymer and an inorganic thickener at the same time at the same time in place of a wax that has been used as a thickener in a gel type of As a result of preparing a silicone water-in-oil emulsion cosmetic composition, it is resistant to sweat, water, and sebum contamination, and the makeup lasts for a long time, and it is not only excellent in application such as application property, but also can maintain high viscosity and good aging stability. The invention was completed.

The cosmetic composition of the present invention contains 1 to 30% by weight, preferably 10 to 20% by weight, based on the total weight of the silicone-based crosspolymer. This is because when the content is less than 1% by weight, the effect as a sebum control and gelling agent cannot be expected, and when it exceeds 30% by weight, there is a problem in that the skin phenomenon occurs when applying the skin, which adversely affects the feeling of use. The silicone crosspolymer in the present invention controls the amount of sebum and also serves as a gelling agent.

In the present invention, it is preferable to use a dimethicone crosspolymer, a dimethicone / vinyl dimethicone crosspolymer, a dimethicone PEG10 / 15 crosspolymer, or the like independently or in combination thereof.

Inorganic thickener in the cosmetic composition according to the present invention forms a thixotropic gel phase of the composition to improve the applicability. Such inorganic thickeners comprise 0.1 to 10% by weight, preferably 1 to 5% by weight, based on the total weight of the composition. This is because when the content is less than 0.1% by weight, the effect as a thixotropic gelling agent cannot be expected, and when it exceeds 10% by weight, the viscosity is excessively increased and the feeling of use becomes stiff when applying the skin.

In the present invention, it is preferable to use bentonite or hectorite as the inorganic thickener, but the present invention is not limited thereto, and these are preferably used alone or in combination thereof.

In addition, the cosmetic composition of the present invention includes the components included in the conventional silicone water-in-water (W / S) emulsified cosmetic composition in addition to the silicone-based cross-polymer and inorganic thickener within the scope of the present invention. Components that may be included in a general water-in-silicone emulsion cosmetic composition include, but are not limited to, silicone oil, humectant, pigment, emulsifier, water, fragrance, etc. In the present invention, these may be selected and included in an appropriate composition and content. .

For example, silicone oils, which can be used in conventional water-in-silicone (W / S) emulsified cosmetic compositions, include both volatile and nonvolatile oils, including dimethicone, polyphenylmethylsiloxane, and cyclomethicone. It is not limited to this.

Moisturizing agents include, but are not limited to, 1,3-butylene glycol, n-grillserine, propylene glycol, betaine, and the like. As the emulsifier, a silicone emulsifier can be used alone or in combination with a nonionic emulsifier. When only a silicone emulsifier is used as a main agent, it is preferable to use dimethicone and dimethicone copolyols of HLB 8.0-13.0. When used in combination with nonionic emulsifiers, silicone glycol copolymers (HLB: 3.0-8.0), laurylmethicone copolyols (HLB: 3.0-8.0), or cyclomethicone dimethicone copolyols (HLB: 3.0-8.0) Used in combination of at least one of glycerol monostearate, sorbitan monooleate, sorbitan sesquioleate, polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan monomonate, and fiji 40 stearate It is desirable to.

The cosmetic composition of the present invention may be applied to a foundation, makeup base, etc., but is not limited thereto.

Hereinafter, the present invention will be described in detail with reference to Examples. However, embodiments according to the present invention can be modified in many different forms, the scope of the present invention should not be construed as limited to the embodiments described below. Embodiments of the present invention are provided to more completely explain the present invention to those skilled in the art.

Example 1-3 and Comparative Example 1-3

According to the composition and the content shown in Table 1, the oil phase component was heated to 70 ℃ to dissolve and then added by adding a pigment component to uniformly disperse and then emulsified by the water phase component. The mixture was defoamed and then cooled to prepare a cosmetic composition.

In Table 1, the dimethicone crosspolymer is DC-9040 manufactured by Dow Corning, and the dimethicone / vinyl dimethicone crosspolymer is KSG-16 manufactured by Shinetsu, dimethicone PEG10 / 15. As a cross polymer, KSG-210 manufactured by Shin-Etsu Co., Ltd. was used.

Hereinafter, the feeling of use and long-term stability, such as the cosmetic persistence, the spreadability of the cosmetic composition obtained in Example 1-3 and Comparative Example 1-3 were evaluated.

<Evaluation of feeling>

50 females aged 25-45 years were divided into four groups, and each cosmetic product prepared in Examples 1-3 and Comparative Examples 1-3 was adjusted to each group to be used on both sides of the face. According to the evaluation criteria, the makeup persistence, oiliness, and spreadability were evaluated, and the results are shown in Table 3.

(Evaluation standard)

1: very bad

2: bad

3: normal

4: good

5: Very good

As shown in Table 2, the cosmetics prepared in Examples 1-3 according to the present invention simultaneously containing a silicon-based crosspolymer and an inorganic thickener in an appropriate amount include a wax but do not include a silicone-based crosspolymer or an inorganic thickener. Compared with the cosmetics prepared in 1-3, the overall feeling of use, such as makeup persistence, oiliness, and spreadability, was better. As such, it can be seen that the composition of the embodiment according to the present invention improves cosmetic persistence and improves usability.

<Long term stability evaluation>

Long-term storage stability of the cosmetics prepared in Examples 1-3 and Comparative Examples 1-3 described above was evaluated in a thermostat (0 ° C., 25 ° C., 45 ° C., 50 ° C.) and room temperature, and the results are shown in Table 3. .

(Evaluation standard)

◎: Stable

△: unstable

X: Separation

Referring to Table 3, the cosmetics prepared in Examples 1-3 according to the present invention, it can be seen that the excellent long-term stability compared to the cosmetics prepared in Comparative Examples 1-3.

As described above, the gel-type silicone water-in-oil (W / S) emulsified cosmetic composition according to the present invention includes a silicone-based crosspolymer and an inorganic thickener in an optimized content, thereby providing excellent feeling of use such as makeup persistence and application properties, Long-term stability with temperature changes is also improved.

Claims (3)

In the silicone water-emulsion emulsion cosmetic composition, Based on the total weight of the composition, 1 to 30% by weight of silicone crosspolymer; and Inorganic thickener 0.1 to 10% by weight; Gel type silicone water-in-oil emulsion cosmetic composition comprising a. The method of claim 1, The silicone-based crosspolymer is any one or more selected from the group consisting of dimethicone crosspolymer, dimethicone / vinyldimethicone crosspolymer and dimethicone PEG10 / 15 crosspolymer. The method of claim 1, Gel inorganic silicone emulsion cosmetic composition, characterized in that the inorganic thickener is any one selected from the group consisting of bentonite, hectorite and mixtures thereof.