KR20170122683A - Water-in-oil type emulsified cosmetic composition - Google Patents

Abstract

The present invention relates to a high internal phase water-in-oil type emulsified cosmetic composition comprising a water phase in a high content, and specifically, provides a high internal phase water-in-oil type emulsified cosmetic composition, which comprises the water phase in a high content relative to the total weight of the composition, at least 5 wt% of a pigment or a dye, based on the total weight of the composition, 1-7 wt% of a first emulsifier relative to the total weight of the composition in an oil phase and 0.1 to 5 wt% of a second emulsifier, and which is not a water drop formulation. The present invention can provide a high internal phase water-in-oil type emulsified cosmetic composition having improved stability and fluidity while maintaining a pleasant feeling, a light feeling, a cool use feeling and a cooling feeling.

Description

[0001] WATER-IN-OIL TYPE EMULSIFIED COSMETIC COMPOSITION [0002]

The present invention relates to a water-in-oil type cosmetic composition, and more particularly, to a high inland water-in-oil type cosmetic composition which improves stability and fluidity of a formulation.

Generally, emulsions used in cosmetics, medicines and foods are classified into two types. One is an oil-in-water type emulsion in which oil is dispersed in particles in water, and the other is a water-in-oil type emulsion in which water is dispersed in oil.

In the cosmetic composition, the water-in-oil type formulation suppresses evaporation of water from the skin as compared with an underwater type formulation, and can transmit moisture and skin active substances to the skin for a long period of time. The application range of sunscreen products, skin cover products, Is very wide.

However, although the water-in-oil type cosmetic composition has many advantages in terms of water resistance, cosmetic persistence and skin protection effect due to the external appearance of the oil, it has a heavy feeling of use and has a thicker cosmetic membrane than the underwater type cosmetic composition, Has been disadvantageous.

In addition, the water-in-oil type emulsion is less stable than the water type emulsion in order to enhance the emulsion stability. To solve the stability of the water type emulsion, there has been studied a method of increasing the viscosity of the water type emulsion. However, And the result is that the feeling of use of the male emulsion is made bad again.

In recent years, water-in-oil type cosmetic composition of water drop formulation has been continued to increase the content of water phase to give a feeling of feeling of use when a product is used. However, the water-in-oil type cosmetic composition of the water drop formulation has an advantage of showing the moment of water drop, but the effects such as softness and durability are insufficient as compared with conventional water-in-oil type cosmetic compositions.

In addition, the water-in-oil type cosmetic composition of the conventional water drop formulation can not stably form the pigment powder on the oil phase, so that the content of the pigment powder is low and thus the cosmetic composition has insufficient skin coverage and coloring power. In order to enhance the skin coverage and coloring power, attempts have been made to incorporate dyes into water-containing water-based dyes. However, dyes are not only discolored and faded when exposed to ultraviolet rays and heat, .

Accordingly, the present inventors have completed the present invention in order to provide a water-in-oil type cosmetic composition having improved formulation stability and fluidity, and excellent covering power and coloring power, while imparting a pleasant feeling to the user.

Accordingly, an object of the present invention is to provide a high-resistance water-in-oil type cosmetic composition which is improved in stability and fluidity while imparting a refreshing sensation to the skin including a high content of water phase. It is also an object of the present invention to provide a high inland water-in-oil type cosmetic composition which stably contains a pigment and / or a dye and has improved coverage and coloring power.

In order to solve the above-mentioned problems, the present invention provides a high-resistance water-in-oil type cosmetic composition having improved stability and fluidity while imparting a pleasant feeling to use including a high content of water phase. Also provided is a high inland water-in-oil type cosmetic composition stably containing a pigment and / or a dye and having improved coverage and coloring power.

More specifically, the present invention relates to a composition comprising a high content of water based on the total weight of the composition, comprising at least 5% by weight based on the total weight of the composition of a pigment or dye; 1-7 wt% of the first emulsifier based on the total weight of the composition on the oil phase; And 0.1-5% by weight of a second emulsifier, and is not a water drop formulation.

The cosmetic composition according to the present invention is a water-in-oil type cosmetic composition.

The cosmetic composition according to the present invention is a type wherein the external phase is oily and the internal phase is aqueous phase. The oil phase contains an oil component, and the water phase contains a water component.

Preferably, the cosmetic composition according to the present invention is a high internal phase water-in-oil type cosmetic composition.

In the specification of the present invention, 'high intimal' is meant to include high intracity. Preferably a high content of the internal phase water phase.

The cosmetic composition according to the present invention contains a high content of water phase. And a high content of water-based ingredients relative to the total weight of the cosmetic composition.

More specifically, the aqueous phase according to the present invention is characterized in that the total weight of the aqueous phase component is at least 50 wt%, at least 51 wt%, at least 57 wt%, at least 61 wt%, at least 65 wt%, most preferably at least 68 wt% And up to 99% by weight, up to 90% by weight, up to 85% by weight, preferably up to 80% by weight and most preferably up to 73% by weight.

The aqueous phase component contains a high content of aqueous base. The aqueous base includes the aqueous base at a high content relative to the total weight of the cosmetic composition and includes an aqueous base at a high content relative to the total weight of the aqueous phase composition. More specifically, the total weight of the aqueous base is 45-75 wt.%, Based on the total weight of the cosmetic composition, and 50-99 wt.%, Based on the total weight of the aqueous composition.

The aqueous base contained in the cosmetic composition according to the present invention is not particularly limited as long as it is a component that can be commonly used in the art and is used, for example, from purified water, fruits, roots, seeds, leaves, The extracted extract and / or the extract water may be used.

In the specification according to the present invention, the term "emulsifier" means a component in which two phases (oil phase and water phase) which are not mixed with each other are used to stably form an emulsion. It is common that both the hydrophilic group and the hydrophilic group are contained in the molecule.

Preferably, the present invention comprises a first emulsifier in an amount of from 1 to 7% by weight based on the total weight of the composition as an oily component and a second emulsifier in an amount of from 0.1 to 5% by weight based on the total weight of the composition. More preferably, the present invention comprises a first emulsifier in an amount of 1-5 wt% based on the total weight of the composition as an oily component and a second emulsifier in an amount of 0.1-3 wt% based on the total weight of the composition.

Specifically, the first emulsifier 10 is a component capable of forming a large amount of emulsified particles of a dispersed phase 30 dispersed in an oil phase which is a continuous phase 40. Emulsified particles of the aqueous phase as the dispersed phase (30) are largely formed, so that a feeling of use and moisture sensation can be exhibited when the product is used. More specifically, the first emulsifier 10 may be a crosspolymer polymerized so as to exhibit a viscosity of 8,000 to 20,000 mPa.s at 20 ° C (Brooklyn viscometer, spindle no. 5-6) More specifically, a cross-polymer having a viscosity of 13,000 to 20,000 mPa.s at 20 ° C may be used, and the cross-polymer may preferably be a silicon-based cross-polymer, more preferably a melt- 20,000 mPa.s may be used. The silicone-based cross-polymer may be selected from the group consisting of PEG-10 dimethicone / vinyl dimethicone crosspolymer, lauryl polyglyceryl-3 polydimethylsiloxy ethyldecethicone, lauryl PEG-9 polydimethylsiloxy ethyldecethicone, PEG-12 dimethicone / PPG-20 crosspolymer, dimethicone / PEG-10/15 crosspolymer, dimethicone / polyglycerin-3 cross, glyceryl-3 polydimethylsiloxane chilled dimethicone, Polymer, cetyl PEG / PPG-10/1 dimethicone, and cetyl dimethicone copolyol. More preferred are dimethicone / vinyl dimethicone crosspolymer, lauryl polyglyceryl-3-polydimethylsiloxy ethyl dimethicone, polyglyceryl-3 polydimethylsiloxy ethyl dimethicone, caprylyl methicone / PEG-12 dimethicone / PPG-20 crosspolymer, dimethicone / PEG-10/15 crosspolymer, dimethicone / polyglyceryl-3 crosspolymer, and cetyl dimethicone copolyol May be used. Most preferably, PEG-10 dimethicone / vinyl dimethicone crosspolymer may be used, but is not limited thereto.

When the content of the first emulsifier is 1-7 wt% based on the total weight of the composition, it is possible to exhibit an appropriate viscosity of the entire composition as well as improvement in emulsion stability. Preferably, the content of the first emulsifier may be 1-5 wt% based on the total weight of the composition.

The second emulsifier 20 is a component that can fill the interface of the emulsion particles formed by the first emulsifier 10 (having a large size). The reason why the 'emulsion particle formed by the first emulsifier' is filled is that the space between the molecules of the first emulsifier 10 forming the emulsion particle is occupied by the second emulsifier 20, 1 means that the emulsified particles formed by the emulsifier do not show the effect that the emulsified particles appear to burst when the product is used. The second emulsifier may be, for example, PEG-10 dimethicone, cetyl PEG / PPG-10/1 dimethicone, lauryl pyridine-9 polydimethylsiloxy ethyl cholate dimethicone, PEG-8 stearate, polyglyceryl- Diisostearate, sorbitan oleate, sorbitan monostearate, sorbitan isostearate, steares-2, ole-2, glyceryl laurate, ceres-2, phage-30 dipolyhydroxy stearate And may be used in combination with any one or more selected from the group consisting of glyceryl stearate, glyceryl stearate, and PEG-4 dilate. But are not limited to, PEG-10 dimethicone, PEG-8 stearate, polyglyceryl-3-diisostearate, sorbitan oleate, sorbitan monostearate, sorbitan isostearate, -2, glyceryl laurate, ceres-2, PEG-30 dipolyhydroxy stearate, glyceryl stearate, and PEG-4 dilaureate. Most preferably, PEG-10 dimethicone may be used, but is not limited thereto.

The second emulsifier uses an emulsifier having an HLB value of 2-6. Preferably an emulsifier having an HLB value of 4-6. More preferably, the second emulsifier may be a PEG-10 dimethicone having an HLB value of 4-6.

HLB (Hydrophil-Lipophile Balance) is a value indicating the degree of affinity of the emulsifier for water and oil. HLB indicates that the smaller the value is, the stronger the lipophilicity as a whole molecule, and the higher the value, the stronger the hydrophilicity. The HLB formula for the emulsifier is:

HLB = 20 x molecular weight / total molecular weight of hydrophilic group

The inventors of the present invention confirmed that when the PEG-10 dimethicone was used as the second emulsifier, the stability and the fluidity of the cosmetic composition were different according to the HLB of PEG-10 dimethicone. Specifically, when the PEG-10 dimethicone having an HLB value of 4.5 was used, stability and fluidity of the cosmetic composition were improved as compared with the case where PEG-10 dimethicone having an HLB value of 3 was used.

In the present invention, the 'emulsifier' includes any component that satisfies the definition of the emulsifier described above, and it is also considered that the cosmetic contains a component that also functions as an emulsifier other than the emulsifier.

The present invention provides a water-in-oil type cosmetic composition that is not a water drop formulation.

Preferably, the present invention provides a high resorption water-in-oil type cosmetic composition that is not a water drop formulation.

The cosmetic composition according to the present invention provides a water-in-oil type cosmetic composition which contains a water content in a high content and is not a water drop formulation.

In the specification of the present invention, the 'water drop formulation' refers to a water-in-oil formulation having a phenomenon in which the emulsion particles are not stably held when the cosmetic is applied to the skin to separate the aqueous phase from the cosmetics. Specifically, the term "water drop formulation" refers to a water-in-oil formulation having a phenomenon that water drops form on the skin when applying the cosmetic composition to the skin.

The present invention provides a water-in-oil type cosmetic composition which is not a formulation in which emulsion particles are stably retained when applied to the skin, and the water phase is separated from the inner phase to form water droplets on the skin.

The cosmetic composition according to the present invention may contain the first emulsifier and the second emulsifier together to maintain the stability of emulsified particles when skin is applied, and the fluidity of the composition may be maintained as moisture release and loss are suppressed.

The cosmetic composition according to the present invention contains a pigment or a dye in an amount of 5% by weight or more based on the total weight of the composition.

In the present invention, the content of the color pigment or dye is at least 5% by weight, preferably at least 7% by weight based on the total weight of the cosmetic composition, thereby exhibiting excellent skin coverage and coloring power of the cosmetic composition according to the present invention . For formulation stability, the pigment or dye may be present in an amount of up to 25% by weight, preferably up to 20% by weight, more preferably up to 18% by weight, most preferably up to 15% by weight, based on the total weight of the cosmetic composition.

In the present invention, the properties of the pigment or dye exhibiting the hue may be powder, liquid phase, or phase state.

In the present invention, the pigment or dye may be dispersed in water or oil phase by a known method. For example, the pigment may be dispersed in the oil phase in powder form or may be dispersed in the water phase by a method such as hydrophilic coating.

In one aspect of the present invention, the cosmetic composition according to the present invention may comprise a pigment powder in an amount of 5 wt% or more based on the total weight of the cosmetic composition. The inventors of the present invention have found that when applying the cosmetic composition according to the present invention, even when the pigment powder is at least 5% by weight, especially at least 7% by weight, more preferably at least 10% by weight based on the total weight of the composition, Respectively.

The pigment is not particularly limited as long as it is used in the cosmetic composition in the art, and for example, an inorganic pigment, an organic pigment, a surfactant metal salt pigment, a colored pigment, a pearl pigment, a metal powder pigment, . Examples of the inorganic pigments include titanium oxide, zirconium oxide, zinc oxide, cerium oxide, barium sulfate, calcium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, talc, mica, kaolin, cericite, muscovite, Magnesium silicate, magnesium silicate, calcium silicate, barium silicate, strontium silicate, tungstic acid metal salt, hydroxyapatite, vermiculite, heidiite, zirconium oxide, zirconium oxide, Bentonite, montmorillonite, hectorite, zeolite, ceramic powder, calcium phosphate dibasic, alumina, aluminum hydroxide, boron nitride, boron nitride, silica and the like can be used. Examples of the organic pigment include polyamides, polyesters, polyethylene, polypropylene, polystyrene, polyurethane, benzoguanamine, polymethylbenzoguanamine, polytetrafluoroethylene, polymethylmethacrylate, cellulose, silk powder, nylon powder , 12 nylon, 6 nylon, acrylic powder, acrylic elastomer, styrene acrylic acid copolymer, divinylbenzene styrene copolymer, vinyl resin, urea resin, phenol resin, fluororesin, silicon resin, acrylic resin, melamine resin, epoxy resin, poly Carbonate resin, microcrystalline fiber powder, starch powder, lauroylidine, and the like can be used. Examples of the surfactant metal salt pigment include zinc stearate, aluminum stearate, calcium stearate, magnesium stearate, zinc myristate, magnesium myristate, zinc cetyl linoleate, calcium cetyl linoleate and sodium zinc cetyl linoleate. Examples of the colored pigments include inorganic yellow pigments such as iron oxide, iron hydroxide and iron titanate, inorganic yellow pigments such as inorganic brown pigments, sulfur iron oxides and yellow lozes, inorganic black pigments such as black iron oxide and carbon black, manganese violet and cobalt violet Inorganic green pigments such as inorganic violet pigments, chromium hydroxides, chromium oxides, cobalt oxides and cobalt titanates, inorganic blue pigments such as persimmon and blue pigments, fine particle powders such as titanium oxide fine particles, cerium oxide fine particles and fine particle zinc oxide, Lakes of natural pigments, synthetic resin powders obtained by complexing these powders, and the like can be used. As the pearlescent pigment, titanium oxide coated mica, titanium oxide coated mica, bismuth oxychloride, bismuth oxide coated bismuth oxide, titanium oxide coated talc, young scarf, and titanium oxide coated colored mica can be used . As the metal powder pigment, aluminum powder, copper powder, stainless steel powder, or the like can be used, but it is not limited thereto.

In one embodiment of the present invention, it has been confirmed that the stability and fluidity of the pigment are improved even when the iron oxide coated with titanium oxide is contained in an amount of 10 wt% or more based on the total weight of the composition.

The cosmetic composition according to the present invention may further contain various oily components commonly used in the art. Examples thereof include, but are not limited to, liquid oil fractions such as silicone oil, polar oil, and non-polar oil, solid oil, and semi-solid oil.

As the silicone oil, silicone oils such as cyclopentasiloxane, cyclohexasiloxane, dimethylpolysiloxane, methylphenylpolysiloxane, matylhydrogenpolysiloxane, and octamethylcyclotetrasiloxane can be used. Examples of the polar oil fraction include glyceryl diisostearate, diisostearyl malate, tripropylene glycol pivalate, glyceryl tri-2-ethylhexanoate, cetyl octanoate, hexyl laurate, isopropyl myristate, An ester oil such as octyl stearate, isostearyl stearate, isopropyl isostearate, octyl isopalmitate, isodecyl isostearate, 2-ethylhexyl succinate, diethyl sebacate, and cetyl ethylhexanoate. Examples of the nonpolar oil fraction include hydrocarbon oils such as liquid paraffin, squalane, squalane, paraffin, and isohexadecane. Examples of the solid oil include solid fats such as cacao butter, coconut oil, canola oil, hardened coconut oil, palm oil, tallow oil, sunflower oil and hardened castor oil, paraffin wax (straight chain hydrocarbon), microcrystalline wax (branched chain saturated hydrocarbon), ceresin wax, , Fischer Tropsch wax, wax, carnauba wax, candelilla wax, rice bran wax (rice wax), wax, jojoba oil, wax wax, montan wax, kapok wax, bayberry wax, shellac wax, candy Waxes such as castor wax, isopropyl lanolate, hexyl laurate, reduced lanolin, hard lanolin, POE lanolin alcohol ether, POE lanolin alcohol acetate, POE cholesterol ether, lanolin fatty acid polyethylene glycol, POE hydrogenated lanolin alcohol ether, And higher fatty acids such as lysic acid, palmitic acid, stearic acid, and behenic acid. Examples of the semi-solid oil include vegetable such as vaseline, lanolin, shea butter, and partially hydrogenated palm oil; Partially hydrogenated jojoba oil, bisdiglyceryl polyacyl adipate-2, tetra (behenic acid / benzoic acid / ethylhexanoic acid) pentaerythritol, macadamia nut polyglyceryl-6-ester bebehenate, (Phytosteryl / behenyl), hexaoxystearic acid dipentaerythritol, and the like.

In addition, the cosmetic composition according to the present invention may further comprise various components that can be used as an aqueous phase component in the art. But are not limited to, a moisturizing agent, a sequestering agent, an antioxidant, a water-soluble agent, a neutralizing agent, a water-soluble ultraviolet screening agent, and the like.

In addition, the cosmetic composition according to the present invention may be prepared by a conventional method in which an appropriate amount of components ordinarily compounded in a water-in-oil type cosmetic composition are compounded within the range not impairing the effects of the present invention, in addition to the components described above.

In addition, the cosmetic composition according to the present invention can be used as a foundation, a solution, an ointment for external use, a cream, a foam, a nutrition lotion, a softening water, a pack, a makeup base, an essence, a sunscreen cream, a sun oil, a suspension, , Oil, spray, and the like, but is not limited thereto.

The water-in-oil type cosmetic composition according to the present invention can be prepared according to various methods known in the art, for example, but not limited thereto.

(S1) stirring the oil component and the water component respectively with a disper after weighing; (S2) slowly dispersing the pigment phase in an oil phase component with a disper or a homogenizer; (S3) adding a mixture in which the aqueous phase component is dissolved to an oil phase in which the pigment phase is dispersed, and emulsifying the mixture. The steps (S1) - (S3) may be performed at 80 ° C, and the step (S3) may be performed while stirring at 3000 rpm.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a high-resistance water-in-oil type cosmetic composition having improved formulation stability and fluidity.

INDUSTRIAL APPLICABILITY According to the present invention, it is possible to provide a high-resistance water-in-oil type cosmetic composition having a high water content and improved formulation stability and fluidity.

Further, the present invention can provide a high inland water-in-oil type cosmetic composition with improved coverage and color developing ability.

Further, the present invention can provide a high inland water-in-oil type cosmetic composition having a pleasant feeling and a feeling of moisture improved.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments of the invention and, together with the description of the invention, It should not be construed as limited.
Fig. 1 schematically illustrates emulsification of the dispersed phase 30 by the first emulsifier 10 alone in the continuous phase 40 to form emulsified particles.
Fig. 2 schematically illustrates the emulsified particles formed by emulsifying the dispersed phase 30 by the second emulsifier 20 alone in the continuous phase 40. Fig.
3 schematically shows that the emulsified particles 10 are formed by emulsifying the dispersed phase 30 together with the first emulsifier 10 and the second emulsifier 20 in the continuous phase 40.

Hereinafter, embodiments of the present invention will be described in detail to facilitate understanding of the present invention. However, the embodiments according to the present invention can be modified into various other forms, and the scope of the present invention should not be construed as being limited to the following embodiments. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art to which the present invention belongs.

[Preparation Example: Preparation of Examples and Comparative Examples]

Examples and Comparative Examples were prepared with the compositions shown in Table 1 below.

In Example 1-2 and Comparative Example 1-4, the oil components were weighed and mixed, and then dispersed evenly at 80 ° C with a disperser (Homogenizing mixer (ROBO MIX A, Primix)). The water component was similarly dispersed by stirring. Then, the pigment was dispersed by gradually adding the pigment to the oil component using a disperser (Homogenizing mixer (ROBO MIX A, Primix)). After the pigment was dispersed in the oil component, the oil component mixture was stirred at 3000 rpm, and the prepared aqueous component mixture was slowly added.

Comparative Example 3 was prepared in the same manner as above without dispersing the pigment in the oil component.

ingredient Raw material name Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Oil component Cyclopentasiloxane 11.58 11.58 10.33 31.08 20.33 15.33 Cyclohexasiloxane 5.57 5.57 5.57 16.07 5.57 5.57 PEG-10 Dimethicone Vinyl Dimethicone Crosspolymer 1.25 1.25 - 1.25 - - PEG-10 Dimethicone (HLB 4.5) 1.00 - - 1.00 - - PEG-10 Dimethicone (HLB 3) - 1.00 3.50 - 3.50 3.50 Stearic acid 0.10 0.10 0.10 0.10 0.10 0.10 Distearyl dimonium chloride 0.20 0.20 0.20 0.20 0.20 0.20 Water component Purified water 64.00 64.00 64.00 34.00 64.00 64.00 Tromethamine 1.60 1.60 1.60 1.60 1.60 1.60 Phenylbenzimidazolesulfonic acid 2.70 2.70 2.70 2.70 2.70 2.70 1,2-hexanediol 1.00 1.00 1.00 1.00 1.00 1.00 Magnesium sulfate 1.00 1.00 1.00 1.00 1.00 1.00 Pigment Titanium oxide (dimethicone coating) and iron oxide 10.00 10.00 10.00 10.00 - 5.00

[Experimental Example 1: Comparison of Stability of Formulations]

Each of the water-in-oil type cosmetics prepared in the above Preparation Example was subjected to a stability test of the formulation.

The stability of the formulation was evaluated by the same procedure as in Example 1-2 and Comparative Example 1-4 except that the prepared test pieces were stored at 50 ° C, 0 ° C, -15 ° C, The results of the observation are shown in Table 2 below. Cycle refers to a condition where the temperature changes from -15 ° C to 40 ° C over two days. The following results are obtained after 1, 2, and 4 weeks.

Evaluation items Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 50 ° C ○ / ○ / ○ ○ / ○ / ○ ○ / X / X X / X / X X / X / X X / X / X 0 ° C ○ / ○ / ○ ○ / ○ / ○ ○ / ○ / ○ ○ / ○ / ○ X / X / X X / X / X -15 ° C ○ / ○ / ○ ○ / ○ / ○ X / X / X ○ / X / X X / X / X X / X / X CYCLE ○ / ○ / ○ ○ / ○ / ○ X / X / X X / X / X X / X / X X / X / X Room temperature ○ / ○ / ○ ○ / ○ / ○ ○ / ○ / ○ X / X / X ○ / ○ / ○ ○ / ○ / ○

O: no phase separation observed

X: phase separation observed

result

In the case of Example 1 and Example 2 according to the present invention, stability of the formulation according to time was excellent in each temperature condition, whereas in Comparative Example 1-4, phase separation did not occur only under specific temperature conditions. As a result, it was confirmed that the formulation stability was not ensured according to the storage temperature and storage condition of the cosmetic when Comparative Example 1-4 was applied.

[Experimental Example 2: Comparison of fluidity of formulations]

Each of the water-in-oil type cosmetics prepared in the above Preparation Example was subjected to a fluidity test of the formulation.

The fluidity of the formulation was evaluated in 10 adult women. The prepared examples and comparative examples were placed in 100 ml vials and taken out on the back of the hand, . The results are shown in Table 3 below, with 0 being the worst fluidity, 0 being the best fluidity and 5 being the best fluidity. The results are shown in Table 3 below.

Evaluation items Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 liquidity 4.3 3.9 2.1 3.9 2.3 2.4

result

Comparative Examples 1, 3 and 4 did not contain PEG-10 dimethicone vinyl dimethicone crosspolymer and PEG-10 dimethicone HLB 4.5, respectively, and were prepared so as to have a difference in pigment content. From the results of the fluidity evaluations for Comparative Examples 1, 3 and 4, it can be confirmed that the fluidity of Comparative Example 1, which contains the largest amount of pigment, is the worst.

Further, when Comparative Example 1 and Example 2 were compared, when the PEG-10 dimethicone, HLB 3, was partially substituted with the PEG-10 dimethicone vinyl dimethicone crosspolymer in the emulsifier of the cosmetic composition, But the fluidity was improved. Comparing Examples 2 and 1, it was confirmed that the use of an emulsifier having an HLB of 4.5 improves the fluidity more than the case of using the emulsifier having the HLB 3 as the second emulsifier.

In addition, in Examples 1 and 2, it was confirmed that excellent fluidity of the water-in-oil formulations was maintained even in comparison with Comparative Example 2, which is a water-in-oil formulations containing 34 wt% of purified water as the total weight of the composition. It was confirmed that even though the water content was higher than that of Comparative Example 2, the evaluation results were better in terms of fluidity.

[Experimental Example 3: Comparison of feeling of cool feeling]

The water-in-oil type cosmetic of the present invention was tested for cooling effect and refreshing sensation.

In order to evaluate the cooling effect and the cooling sensation, 20 adult women were used to evaluate the cooling effect and the cooling sensation when the comparative example 2 and the example 1-2 were used. 1, 2, 3, 4 and 5 points were assigned to each of the cooling effect and the cooling feeling, and evaluation was made in a manner that the five points were the most excellent. The results are shown in Table 4 below.

Cooling effect was evaluated as a sense of feeling that calms the stimulated skin by lowering the temperature of the skin when the cosmetic material is applied to the skin, so that the refreshing feeling is immediately felt cool and fresh feeling immediately upon application.

Cooling effect Refreshing feeling Example 1 4.6 4.8 Example 2 4.5 4.7 Comparative Example 2 2.7 3.6

result

It was confirmed that Example 1-2 containing 64 wt% of the water phase based on the amount of the composition according to the present invention was significantly superior to Comparative Example 2 including 34 wt% of the water phase in terms of cooling effect and refreshing feeling.

Synthesis

As a result of evaluation of usability such as formulation stability, fluidity and refreshing sensation, it was confirmed that the examples prepared according to the present invention were remarkably improved in terms of fluidity and stability, while being a high-resistance water-in-oil type cosmetic composition showing cooling effect and refreshing feeling.

10 ... ... The first emulsifier
20 ... ... The second emulsifier
30 ... ... Disperse phase
40 ... ... Continuous phase

Claims (7)

(i) comprises a water phase in a high content relative to the total weight of the composition,
(ii) at least 5% by weight, based on the total weight of the composition, of a pigment or dye;
(iii) 1-7 wt% of a first emulsifier based on the total weight of the composition in the oil phase; And 0.1-5% by weight of a second emulsifier,
(iv) a high-internal-phase water-in-oil type cosmetic composition characterized in that it is not a water drop formulation. The method according to claim 1,
Wherein the water phase is contained in an amount of 50 to 90% by weight based on the total weight of the cosmetic composition. The method according to claim 1, wherein the first emulsifier is a crosspolymer having a viscosity of 8,000 to 20,000 mPa.s at 20 ° C (Brooklyn viscometer, spindle no. 5-6) Wherein The composition of claim 1 wherein the first emulsifier is selected from the group consisting of PEG-10 dimethicone / vinyl dimethicone crosspolymer, lauryl polyglyceryl-3 polydimethylsiloxy ethyldethicone, lauryl PEG-9 polydimethylsiloxy PEG-12 dimethicone / PPG-20 crosspolymer, dimethicone / PEG-10/15 crosspolymer, dimethicone / dimethicone / polyglyceryl-3 polydimethylsiloxane chilled dimethicone, / Polyglycerin-3 crosspolymer, cetyl PEG / PPG-10/1 dimethicone, and cetyl dimethicone copolyol. The high-resistance water-in-oil type cosmetic composition according to claim 1, wherein an emulsifier having a HLB (Hydrophile-Lipophile Balance) value of 2-6 is used as the second emulsifier. The method according to claim 1,
Wherein the water-in-oil type cosmetic composition is improved in covering power or color developing ability. The method according to claim 1,
Wherein said water-in-oil type cosmetic composition is improved in refreshing sensation, moisture sensation, fluidity, and stability.

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