KR20170003173A - Oil-in-water type cosmetic composition with excellent application - Google Patents

Abstract

The present invention relates to an oil-in-water type cosmetic composition with excellent application and, more specifically, to an oil-in-water type cosmetic composition which improves the stiff texture with excellent initial application and continuous application by dispersing an inorganic pigment in oil.

Description

[0001] The present invention relates to an oil-in-water type cosmetic composition with excellent application properties,

The present invention relates to an underwater type cosmetic composition having excellent wettability and, more particularly, to an underwater type cosmetic composition which is improved not only in initial wetting but also continuous wetting by dispersing an inorganic pigment in an oil phase.

There are two types of dispersing inorganic pigments which usually give a covering power in an underwater type cosmetic. The case of dispersing the inorganic pigment in the water phase and the case of dispersing in the oil phase.

When the inorganic pigment is dispersed in the water phase, when the water is applied to the skin, the water quickly flows, leaving only the pigment, and the feeling of sagging and stiffness are remarkable. In addition, if the composition is not gently adhered to the skin and is set to be stiff, the composition may not be uniformly applied to the skin, and consequently hiding power may be deteriorated to mask skin imperfections and dullness.

When inorganic pigments are dispersed in an oil phase, the water is released at a rapid rate, but the pigments remain wet with the oil. However, in both cases, there is a difference in degree, but there is a disadvantage that the feeling of feeling is stiff compared to the initial wetting by feeling that the moisture is suddenly blown.

In the case of water-in-oil type cosmetics, the initial wetting property is slightly lower than that of underwater type cosmetics, but since there is no evaporation of water, it is easy to apply the product to the skin because of continuous watering. On the other hand, It has feeling. Therefore, it is relatively difficult to uniformly apply the product to the skin as compared with the water-in-oil type cosmetics, and when the uniform application is difficult, the hiding power, which is an important property of the makeup cosmetic composition, is deteriorated.

To solve these problems, Korean Patent Laid-Open Publication No. 2014-0118592 (published on October 10, 2014) provided an underwater type cosmetic composition in which an inorganic pigment was dispersed in oil phase, and silicone gel was used to improve feeling. However, due to the unique characteristics of the silicone gel, there is a problem that when the cosmetic is applied to the skin, the user suffers a feeling of being stiff.

Korean Patent Publication No. 2014-0118592 (Published Oct. 20, 2014)

The inventors of the present invention have conducted research to realize a refreshing feeling with minimal feeling of inorganic pigment in an underwater type makeup cosmetic material while realizing a feeling of soft feeling without stiffness. As a result, it has been found that an inorganic pigment is dispersed in an oil phase and a low HLB surfactant The present invention has been accomplished on the basis of the discovery that a soft feeling can be imparted with a small particle feel, uniform application is possible, and a refreshing feeling can be obtained.

Accordingly, it is an object of the present invention to provide an underwater type makeup cosmetic composition which is soft, pleasant, and has excellent hiding power.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, And an oil phase comprising an inorganic pigment and a low HLB surfactant having an HLB value of 1 to 9 and optionally an HLB surfactant having an HLB value of 10 or more.

By dispersing the inorganic pigment in the oil phase, the composition of the present invention is improved not only in initial wetting but also in continuous wetting, so that a feeling of use is improved. The use of a low HLB surfactant can provide a fresh feel.

By dispersing the inorganic pigment in the oil phase, the composition of the present invention is improved not only in initial wetting but also in continuous wetting, so that a feeling of use is improved. The use of a low HLB surfactant can provide a fresh feel.

The present invention relates to a method for dispersing an inorganic pigment in an oil phase and a low HLB surfactant having an HLB value in the range of 1 to 9, Lt; / RTI >

In general, the water-in-oil type cosmetics are drastically reduced in spreadability (FIG. 1). However, the present invention is characterized in that the spreadability gradually decreases over time as shown in FIG.

The cosmetic of the present invention mainly comprises an aqueous phase containing an aqueous phase-enhancing agent; And an oil phase comprising an inorganic pigment, and a low HLB surfactant, and optionally a high HLB surfactant.

In the composition of the present invention, the water phase part accounts for from 40% to 70% by weight based on the total weight of the composition, and contains water, a humectant, and the like. The moisturizing agent is not particularly limited as long as it has a moisturizing component, and for example, a polyol such as butylene glycol can be used.

The water-thickening agent contained in the water is not particularly limited as long as the cosmetic material has a predetermined viscosity and is not limited as long as it can increase the water-in-water portion. For example, in the group of polyacrylate, natural gum, At least one selected raw material may be used. The aqueous thickener used in the present invention is used in an amount such that an ideal cosmetics viscosity of 15,000 to 50,000 CPS, which can reduce the risk of a topical phase, can be used in various amounts ranging from about 0.5 to 2% by weight. If it is lower than 15000CPS, the formulation can not be stably maintained, which is undesirable. If 5000CPS is exceeded, a feeling of use that is too stiff can overwhelm the feeling of use of the present invention, which is undesirable.

The oil phase part of the present invention contains silicone oil such as cyclopentasiloxane, phenyltrimethicone, dimethicone, ester-based oil such as dicaprylyl carbonate, etc. as oil, and various kinds and amounts of cosmetics vary depending on the viscosity and feeling Can be used. In the present invention, the oil is used in an amount ranging from 10% by weight to 30% by weight based on the total weight of the composition.

Examples of the inorganic pigments used in the present invention include titanium dioxide, zinc oxide, iron oxide, mica, silica, talc, boron nitride and the like. The inorganic pigments may be used differently depending on the ultraviolet shielding function, coverage, have. In the composition of the present invention, the inorganic pigment is contained in an amount of 0.5 to 15% by weight based on the total weight of the composition. If it is contained in an amount of less than 0.5% by weight, it is difficult to perform the function of concealing the make-up. If it is contained in an amount exceeding 15% by weight, it is difficult to disperse the inorganic pigment in the oil phase. Further, the present invention is characterized in that the inorganic pigment is hardly dispersed in the oil phase part due to the particle nature of the inorganic pigment, but is dispersed in the oil phase part without a lipophilic process such as coating.

The oily phase of the present invention includes a low HLB surfactant for smooth continuous wetting. The value of HLB of the surfactant used is preferably about 1 to about 9. The composition of the present invention may contain, as a low-HLB surfactant, PEG / PPG-10/1 dimethicone, PEG-10 dimethicone, 9 polydimethylsiloxyethyl dimethicone, and the like may be used, but the present invention is not limited thereto. The low HLB surfactant is used in the range of 0.6 wt% to 3 wt% with respect to the total weight of the composition. If the surfactant is used in an amount of less than 0.6% by weight, the desired effect is not exhibited to a sufficient degree. If the surfactant is used in an amount of more than 3% by weight, the formulation may be broken and the formulation may be broken.

The high HLB surfactant used in the present invention is used for stabilizing an underwater type cosmetic composition and has an HLB value of 10 or more, preferably 10 to 18. PEG-100 stearate / glyceryl stearate (PEG-100 STEARATE / GLYCERYL STEARATE), methoxypigi-114 / polyepsilon caprolactone (PEG-114 Methylether Polyepsilon Caprolactone (PEG-sorbitan) -based surfactants such as PCG, PEG-sorbitan, and the like, but not limited thereto. The high HLB surfactant is used in a range of 1.5 wt% to 7 wt% based on the total weight of the composition. If the surfactant is used in an amount of less than 1.5% by weight, a water-in-oil type cosmetic formulation can not be prepared, and there is a risk that the oil phase and the water phase are separated. If the surfactant is used in an amount exceeding 7% by weight, a fresh feel for the purpose of the present invention can not be realized.

The water-in-oil type cosmetic composition according to the present invention may further contain preservatives, fragrances and the like used in cosmetics in the art within the scope of not hindering the object of the present invention, but the composition is not limited thereto.

The underwater-type cosmetic composition according to the present invention may be formulated into makeup cosmetics such as an ultraviolet screening agent, a makeup base, a foundation, etc., a whitening agent, a wrinkle improving composition, and the like, but is not limited thereto.

[Referential Example 1] Preparation of Examples and Comparative Examples

The water-in-oil type cosmetic compositions of Examples 1 to 3 and Comparative Examples 1 and 2 and the compositions of Table 2 were prepared with the composition shown in Table 1 below. Comparative Example 1 is an example in which an inorganic pigment is dispersed in an aqueous phase and then a low HLB surfactant is not contained in the oil phase. In Comparative Example 2, an inorganic pigment is dispersed in an oil phase and a silicone elastomer is added together. 0.6% by weight. Examples 1, 2 and 3 are cosmetic compositions containing an inorganic pigment dispersed in an oil phase and a low HLB surfactant in an amount of 0.6 wt%, 1 wt% and 3 wt%, respectively. Finally, Comparative Example 3 is a water-in-oil type cosmetic. The low HLB surfactant used here was lauryl phage-9 polydimethylsiloxyethyl dimethicone.

Comparative Example 1 Comparative Example 2 Example 1 Example 2 Example 3 Water top Purified water 63.6 62.8 63 62.6 60.6 Butylene glycol 5 5 5 5 5 Xanthan gum 0.1 0.1 0.1 0.1 0.1 Phenoxyethanol 0.4 0.4 0.4 0.4 0.4 Polyacrylate-13 0.6 0.6 0.6 0.6 0.6 Paula Aso Buten 0.3 0.3 0.3 0.3 0.3 Inorganic pigments Titanium dioxide 2.5 2.5 2.5 2.5 2.5 Iron oxide CI 77491 0.3 0.3 0.3 0.3 0.3 Iron oxide CI 77492 0.2 0.2 0.2 0.2 0.2 Floating Behenyl alcohol 1.3 1.3 1.3 1.3 1.3 Cetearyl alcohol 0.7 0.7 0.7 0.7 0.7 PEG-100 stearate One One One One One Glyceryl stearate One One One One One Ethylhexyl methoxycinnamate 3 3 3 3 3 Cyclopentasiloxane 20 20 20 20 20 Dimethicone / Vinyl Dimethicone Crosspolymer - 0.5 - - - Lauryl PEG-9 polydimethylsiloxy ethyl dimethicone - 0.6 0.6 One 3

Comparative Example 3 Floating Ethyl hexylmethoxycinnamate 6.5 Phenyl trimecicone 14 Cyclopentasiloxane 24 Lauryl phage-9 polymethylsiloxyldimethicone 4 Distearmonium hectorite 2 Inorganic pigments Titanium dioxide 2.5 Iron oxide CI 77491 0.3 Iron oxide CI 77492 0.2 Water top Purified water 40.5 Butylene glycol 5 NaCl One

[Test Example 1]

In order to examine the feeling of use of each of the cosmetics prepared in Examples 1 to 3 and Comparative Examples 1 to 3, the feeling of use (initial application, finishing feeling) was evaluated through a panel test, and the results are shown in Table 3 . Panelists were 9 women in their 20s and 30s. The expression "good initial release" means that when the cosmetic is applied onto the skin, it is not difficult but smoothly spreading. The higher the score, the more likely it will be soft and crumbling, and the lower the score, the stiffer it will be (1 point: hard to apply, 2 points: a little taut, 3 points: : Smooth gently; 5 points: very soft glow). The expression " finish " means a feeling of use when it is judged that the cosmetic is sufficiently absorbed after being applied to the skin. The higher the score the higher the score, the smoother the ability to breathe continuously, and the lower the score, the lower the wetting as the water flies off, and the more intense the momentum is felt (1 point: very stiff and difficult to finish evenly; Stiffness: 3 points: Normal: 4 points: Smooth and naturally finished; 5 points: Smoothly finished in succession).

Comparative Example 1 Comparative Example 2 Comparative Example 3 Example 1 Example 2 Example 3 Initial loading 4.8 4.2 3.0 4.1 4.1 4.1 Finish 2.4 2.6 4.1 3.6 3.9 4.0

As shown in Table 3, in all the cases of Comparative Examples 1 and 2 and Examples 1 to 3, it was confirmed that the initial wetting property was smoothly peeled off. In the case of Comparative Example 3, the initial wetting property was lower than that of the underwater type cosmetic, while the finishing feeling was found to be the smoothest. However, in Comparative Example 1 in which the inorganic pigment was dispersed in the water phase and Comparative Example 2 in which the inorganic pigment was dispersed in the oil phase and the silicone elastomer was included together, it can be confirmed that a stiff finishing feeling is prominent as compared with the initial collapse.

In Examples 1 to 3 in which the inorganic pigment was dispersed in an oil phase and a little low HLB surfactant was used together, it was confirmed that the finishing feeling was remarkably improved and the degree of soft finish was increased with the increase of the content of the low HLB surfactant , Especially in the case of Example 3, it is judged that it has the smoothest and continuous wetting ability.

From these results, it can be concluded that the content of low HLB surfactant and soft finish are proportional.

[Test Example 2] Evaluation of rheology of composition

In order to examine how the formulation according to the present invention behaves when applied to skin, rheological evaluation (Rheometer, manufacturer: A.INSTRUMENT.ENGLAND, model name: AR2000) was carried out by measuring the rate of change of shear rate and viscosity Respectively. The results are shown in Fig.

In the case of the conventional underwater type composition (Comparative Example 1; blue rhombus), since the degree of change in viscosity due to the shear rate is the largest, the initial wetting property is excellent, but the slope is rapidly decreased, . However, it can be interpreted that the composition of the present invention gives a soft finish feeling because the viscosity change due to the shear rate, that is, the slope thereof is gentler than that of the underwater type composition (blue rhombus) in Example 2 (green triangle).

A comparison of the late viscosity changes of the composition of the present invention with that of a water-in-oil type composition (Comparative Example 3; red square) shows similar characteristics, that is, a similar tilting, indicating smooth tillability.

[Test Example 3] Evaluation of stability of cosmetic material

In order to confirm the stability of the composition according to the present invention, the composition of Example 2 was observed under an optical microscope (Polishing Microscope, manufacturer NIKON, model name: LV100POL), and the results are shown in FIG.

Despite the low HLB surfactant content of 0.6%, it can be confirmed that the system is stable and the inorganic pigment is uniformly dispersed in the oil phase.

Claims (13)

An aqueous phase comprising an aqueous phase enhancer; And
An inorganic pigment and a low HLB surfactant having an HLB value of 1 to 9, and optionally an HLB surfactant having an HLB value of 10 or more;
/ RTI > composition according to claim 1, 2. The cosmetic composition according to claim 1, wherein the water-based part accounts for 40 to 70% by weight based on the total weight of the composition. The cosmetic composition according to claim 1, wherein the aqueous thickener is included in an amount to make the viscosity of the composition from 15000 CPS to 50,000 CPS. The cosmetic composition according to claim 1, wherein the inorganic pigment is contained in an amount of 0.5 to 15% by weight based on the total weight of the composition. The cosmetic composition according to claim 1, wherein the low HLB surfactant has an HLB value of 4 to 5. The cosmetic composition according to claim 1, wherein the low HLB surfactant is contained in an amount of 0.6 wt% to 3 wt% based on the total weight of the composition. The composition of claim 1, wherein the low HLB surfactant is selected from the group consisting of: PEG / PPG-10/1 dimethicone, PEG-10 dimethicone, And Lauryl PEG-9 Polymethylsiloxyethyl Dimethicone. ≪ RTI ID = 0.0 > 8. < / RTI > The cosmetic composition according to claim 1, wherein the high HLB surfactant has an HLB value of 10 to 18. The cosmetic composition according to claim 1, wherein the high HLB surfactant is contained in an amount of 1.5 wt% to 7 wt% based on the total weight of the composition. The cosmetic composition according to claim 1, wherein the composition has improved continuous spreadability. The cosmetic composition according to claim 1, wherein the composition is for make-up. 12. The cosmetic composition according to claim 11, wherein the composition is formulated in the form of a makeup base, a foundation or an ultraviolet screening agent. A make-up base for ultraviolet protection, which is manufactured by the composition of any one of claims 1 to 12.

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