WO2017188662A1

WO2017188662A1 - Color changing cosmetic composition for make-up fused with antioxidant ability

Info

Publication number: WO2017188662A1
Application number: PCT/KR2017/004251
Authority: WO
Inventors: Tae Hun Son; Chan Jae Shin; Tae Sung Ko; Jae-Hoon Kim; Hyun Oh Cho; Byung A SON
Original assignee: Biogenics Inc.
Priority date: 2016-04-28
Filing date: 2017-04-20
Publication date: 2017-11-02
Also published as: KR101808834B1; KR20170123144A

Abstract

Provided is a color changing cosmetic composition for make-up fused with antioxidant ability, and more specifically, a color changing cosmetic composition for make-up including a color changing microcapsule having improved storage durability and handling durability to provide significantly improved stability of an oil-soluble active ingredient, and simultaneously, to completely conceal a color tone included in a core layer, thereby minimizing a bleeding phenomenon (blurring phenomenon) in a formulation and a leaching phenomenon (decrease in strength of the microcapsule) due to the bleeding phenomenon.

Description

COLOR CHANGING COSMETIC COMPOSITION FOR MAKE-UP FUSED WITH ANTIOXIDANT ABILITY

The present invention relates to a color changing cosmetic composition for make-up, and more particularly, to a color changing cosmetic composition for make-up including a destructive microcapsule having a core layer including an oil-soluble active ingredient and a shell layer.

In general, cosmetic products for make-up are used for purposes such as skin flaw covering, bright skin expression, skin protection from ultraviolet rays, and control functions for sweat and sebum, etc. Especially, when the control function for sweat and sebum, which is represented by make-up persistence, is not secured, the make-up collapses, and functions such as covering, skin expression, skin protection, etc., are also able to not work properly. Accordingly, a number of methods have been developed to enhance the make-up persistence, and specifically, methods of various surface treatments of particles, complexation of particles, change of characteristics, etc., have been proposed.

In addition, a color changing microcapsule has been recently proposed in order to enhance an aesthetic effect in cosmetic products for make-up. A color of a colorant in the color changing microcapsule is concealed, and when the cosmetic products are used or applied on a skin surface, the microcapsule is broken and the color of the concealed colorant is revealed. Conventional techniques using color changing microcapsules are described as follows.

Patent Document 1 discloses a pigment surrounded by a capsule film having pressure collapsing property. However, the capsule film of Patent Document 1 is made of collagen, gelatin, agar or algin, and the capsule film is not only vulnerable to storage conditions (stability at an aqueous phase, etc.) of the cosmetic composition but also has problems such as color exudation into a liquid matrix through the capsule film as time passes.

In addition, Patent Document 2 discloses a method for producing a microcapsule including a pigment and at least one polymer wall material selected from a polyacrylate copolymer, a polymethacrylate copolymer, a cellulose ether copolymer, a cellulose ester copolymer, and a polystyrene maleic anhydride copolymer. Patent Document 3 discloses a cleaning composition including a microencapsulated colorant granule constituting a core (A) of a colorant granule and a shell (B) including a wall-forming polymer and a colorant. However, all of these documents do not completely solve problems that a visual effect of the product and stability of the formulation are impaired due to gradual release of the colorant in the microcapsule or a bleeding phenomenon (blurring phenomenon) caused by the colorant in a process of increasing a temperature or a leaching phenomenon due to the bleeding phenomenon (decrease in strength of the microcapsule), or the like.

Therefore, to solve the problems of the related art, the present applicant made an effort to provide a color changing cosmetic composition for make-up including an oil-soluble active ingredient capable of maximizing stability of the oil-soluble active ingredient by using the color changing microcapsule in which physical properties such as bleed resistance and shatter resistance, etc., are remarkably improved in the formulation, and completed the present invention.

[Related Art Document]

(Patent Document 1) Korean Patent Laid-Open Publication No. KR 10-2007-63908

(Patent Document 2) U.S. Registration Patent No. 6,932,984

(Patent Document 3) European Registration Patent No. 2,277,982

An object of the present invention is to provide a color changing cosmetic composition for make-up including a destructive color changing microcapsule having excellent color bleed resistance and excellent shatter resistance in the cosmetic composition to stabilize an oil-soluble active ingredient with improved stability without inducing skin irritation.

Another object of the present invention is to provide a color changing cosmetic composition for make-up capable of not only easily controlling color or discoloration pattern, but also uniformly implementing various color coordinates that provide a soft feeling and not a feeling of irritation.

In one general aspect, a color changing cosmetic composition for make-up includes, in a physiologically acceptable medium: a) a microcapsule including a core layer and one or two or more shell layers, the core layer including at least one colorant, an oil-soluble active ingredient, and a first binder, and the shell layer including at least one colorant and a second binder, b) an alcohol selected from polyol, diol, and monool, the alcohol having a content of 10 wt% or less based on a total weight of the cosmetic composition, and c) at least one hydrophilic gelling agent. The first binder includes one or more selected from sugar alcohols, celluloses, and naturally occurring carbohydrates, the second binder includes one or more selected from glycerophospholipids, naturally occurring carbohydrates, and acrylic acid or methacrylic acid alone or copolymers thereof. The destructive color changing microcapsule has advantages of significantly improving stability of the oil-soluble active ingredient which is highly unstable to heat, light, moisture, air, etc., and simultaneously, continuously supplying the stabilized oil-soluble active ingredient to skin.

In addition, in the color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention, the colorant of the core layer and the colorant of the shell layer are different from each other, and thus, at the time of coating, the microcapsule may be broken and color change may be induced from the colorant of the core layer. The color changing cosmetic composition may include microcapsules each prepared by changing thicknesses of the core layer and the shell layer of the microcapsule and binder compositions or microcapsules including two or more shell layers having different colors, thereby adjusting gradual color change to realize an intermediate stage of color change, and thus, gradation patterns of various color tones may be adjusted to obtain a more attractive coloring effect.

In the color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention, the shell layer disposed at the outermost portion of the microcapsule may include at least one colorant selected from titanium dioxide and mica as a main ingredient. Accordingly, the color tone included in an inner core layer (for example, a color tone by the colorant or a color tone by the oil-soluble active ingredient) may be concealed with white. This color changing microcapsule concealed with white may suppress a bleeding phenomenon of the color tone and to be applicable to white base formulations such as essence, lotion, and cream, etc.

The color changing microcapsule according to the present invention may further include one or more shell layers without including the colorant in order to minimize the bleeding phenomenon of the color tone included in the core layer or to further improve stability of the oil-soluble active ingredient.

In addition, the shell layer of the microcapsule according to the present invention may have two or more shell layers containing one or more different colorants, and thus, a more beautiful gradation effect may be implemented.

In the color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention, the colorant may be selected from an inorganic pigment and an organic pigment, etc., but is not limited thereto.

In the color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention, the hydrophilic gelling agent may be one or more selected from polyacrylic acid, polyacrylamide, polymethacrylic acid, polyhydroxyethyl methacrylate, polyacrylic acid-polymethacrylic acid copolymer, polyacrylic acid-polyacrylamide copolymer, polymethacrylic acid-polyacrylamide copolymer, polyethylene glycol, poly(N,N-ethylaminoethyl methacrylate), polyester, hyaluronic acid, agar, chitosan, ammonium acryloyldimethyl taurate/VP copolymer, xanthan gum, cellulose, cellulose ether, polyvinyl derivative, alginate, and polyacrylate, etc., and preferably, one or more selected from polyacrylic acid, polyacrylamide, polymethacrylic acid, polyhydroxyethyl methacrylate, polyacrylic acid-polymethacrylic acid copolymer, polyacrylic acid-polyacrylamide copolymer, polymethacrylic acid-polyacrylamide copolymer, polyester, hyaluronic acid, etc., but is not limited thereto.

The color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention may be formulated into a makeup base, foundation, a skin cover, a lipstick, a lip gloss, face powder, a two-way cake, an eye shadow, a cheek color, and an eyebrow pencil, etc.

The color changing cosmetic composition for make-up according to the present invention is able to maintain an oil-soluble active ingredient, which is very unstable in heat, light, temperature, moisture, oxygen, time elapse, etc., in a stable state for a long period of time, and simultaneously, is able to provide improved storage durability and handling durability of the color changing microcapsule. Further, the color changing cosmetic composition for make-up may be easily broken by pressing, rubbing, wiping, scrubbing, etc., with hand or tool (cotton, sponge, or paper), etc., and thus, a color tone of the core layer may be clearly expressed, or the oil-soluble active ingredient may be slowly and uniformly released, thereby helping an efficacy thereof to be effectively exhibited over a long period of time.

In addition, the color changing cosmetic composition for make-up according to the present invention completely conceals the color tone included in the core layer, thereby improving problems such as a bleeding phenomenon (blurring phenomenon) in the formulation or a leaching phenomenon (decrease in strength of the microcapsule), etc., due to the bleeding phenomenon, and thus, stability of a product may be maximized.

FIG. 1 is a schematic view showing a structure of a color changing microcapsule according to the present invention.

Hereinafter, a color changing cosmetic composition for make-up according to the present invention is described in detail. Here, unless technical and scientific terms used herein are defined otherwise, they have meanings understood by those skilled in the art to which the present invention pertains. Known functions and configurations that may obscure the gist of the present invention with unnecessary detail will be omitted.

Term "core layer" of the present invention includes a colorant, an oil-soluble active ingredient, and a first binder. The colorant may be understood to include all types of colorants such as pigments, dyes, etc., and the core layer may be manufactured by pulverizing, pelletizing, powdering, granulating, encapsulating, etc., into a particle type, a powder type, a granule type, a microsphere type, and a microcapsule type, and preferably, may be manufactured by pelletizing, spray drying, fluidized bed process, or the like, but is not limited thereto.

Further, term "shell layer" of the present invention includes a colorant and a second binder. The colorant of the shell layer, which is different from that of the core layer, conceals a color tone of the core layer, suppresses a bleeding phenomenon of the colorant included in the core layer, and stabilizes the oil-soluble active ingredient. The color of the core layer may be exhibited by decompression destruction of the shell layer, and sense of feeling and concealing effect, etc., of the color changing cosmetic composition for make-up may be suitably controlled by strength, durability, etc., of the shell layer. Here, preferably, the shell layer may also be manufactured through spray drying, fluidized bed process, or the like, but the manufacturing method of the shell layer is not limited thereto.

The present invention provides a color changing cosmetic composition for make-up including, in a physiologically acceptable medium: a) a microcapsule including a core layer and one or two or more shell layers, the core layer including at least one colorant, an oil-soluble active ingredient, and a first binder, and the shell layer including at least one colorant and a second binder, b) an alcohol selected from polyol, diol, and monool, the alcohol having a content of 10 wt% or less based on a total weight of the cosmetic composition, and c) at least one hydrophilic gelling agent, wherein the first binder includes one or more selected from sugar alcohols, celluloses, and naturally occurring carbohydrates, the second binder includes one or more selected from glycerophospholipids, naturally occurring carbohydrates, and acrylic acid or methacrylic acid alone or copolymers thereof, and the first binder and the second binder have different compositions.

The color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention may include alcohols in 10 wt% or less, and may exhibit a uniform coloring effect without uneven color points. A used content of the alcohols is not limited as long as it is within the above-described range, but when the content of the alcohol is preferably 1 to 8 wt%, and more preferably, 1 to 5 wt%, it is preferred since the above-described characteristic may be implemented by providing a wet microcapsule without impairing destructibility of the microcapsules. Here, the alcohols may preferably have C1-C7 lower alkyl groups, but are not limited thereto. Non-limiting examples of the alcohol may be one or more selected from ethanol, glycerin, 1,2-propanediol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 1,6-hexanediol, and 1,8-octanediol, but the alcohol is not limited thereto.

The first binder according to an exemplary embodiment of the present invention may be connected or combined with the colorant which is discontinuously dispersed, thereby forming the core layer, and may include one or more, and preferably two or more selected from sugar alcohols, celluloses and naturally occurring carbohydrates. The present applicant found that it was possible to have excellent binding force with the colorant of the core layer and to remarkably reduce the bleeding phenomenon in the formulations such as bulk phase, oil-in-water type, water-in-oil type, etc., by using the above-described combination of the first binder.

The first binder may be selected from sugar alcohols such as erythritol (4-carbon), threitol, arabitol(5-carbon), xylitol, ribitol, mannitol(6-carbon), sorbitol, galactitol, iditol, inositol, volemitol(7-carbon), sugar alcohol of diose, etc.; celluloses such as cellulose, methylcellulose, hydroxypropylmethylcellulose, carboxymethylcellulose, hydroxymethylcellulose, hydroxypropylcellulose, acetylcellulose, nitrocellulose, etc. Preferably, the first binder may include a mixture of one or more ingredients selected from the above-described sugar alcohols and celluloses, respectively, as a main ingredient. In addition thereto, the naturally occurring carbohydrate may be further included to implement excellent bonding force with the colorant included in the core layer, thereby minimizing the bleeding phenomenon in the formulation, and suppressing a leaching phenomenon of the microcapsules (decrease in strength of the microcapsule) immediately destructed or quickly wetted or melted by water, alcohols, or the like, at the time of coating.

In short, the microcapsule of the color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention may have a core layer including the sugar alcohols and celluloses as main ingredients and including the naturally occurring carbohydrates as an auxiliary component, and thus, hardness of the microcapsule may be appropriately adjusted so that the microcapsule is able to be softly and easily destructed by pressing, rubbing, wiping, scrubbing, etc., with hand or tool (cotton, sponge, or paper). Here, the naturally occurring carbohydrates are not limited as long as they are materials capable of controlling a hardness property and increasing flexibility of the microcapsule without causing the leaching phenomenon of the microcapsule. However, non-limiting examples thereof may be one or more selected from dextrins, pectins, starches, agar, and mannan, etc., and preferably, may be selected from dextrins such as alpha-cyclodextrin, beta-cyclodextrin, gamma-cyclodextrin, HP-beta-cyclodextrin(hydropropyl-β-cyclodextrin), etc., and starches such as corn starch, tapioca starch, potato starch, sweet potato starch, rice starch, modified starch, etc., showing a characteristic of slight volume expansion due to absorption of water, alcohols, or the like. However, lecithin, chitosan, alginic acid, glucomannan, polysaccharide, acacia gum, etc., are not preferable because they may cause destruction of the shell layer during wetting due to a large degree of volume expansion with respect to water, alcohols, or the like.

Here, the core layer includes the sugar alcohols, the celluloses, or a mixture thereof as a main ingredient, and preferably includes the naturally occurring carbohydrates in a content of 0.01 to 10 parts by weight, more preferably 0.1 to 5 parts by weight, based on 100 parts by weight of the main component.

In the color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention, the core layer may include the oil-soluble active ingredient to improve stability thereof, wherein the oil-soluble active ingredient is not limited as long as it is an oil-soluble ingredient having skin whitening, elasticity, wrinkle improvement, moisturizing, and anti-inflammatory effects used in the art. Preferable examples of the oil-soluble active ingredient may include ingredients selected from idebenone, coenzyme Q10, beta carotene, tocopherol, retinol, oleanolic acid, ursolic acid, diacetyl boldine, α-bisabolol, etc., and derivatives thereof, but the oil-soluble active ingredient is not limited thereto.

In the color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention, the colorant of the core layer and the colorant of the shell layer may be different from each other(fig. 1). Here, the shell layer may have the multilayered shell layer including two or more layers, and when the shell layer has the multilayered shell layer, one or more shell layers including the colorant may be necessarily included, and one or more shell layers without including the colorant may be introduced to further improve shatter resistance of the microcapsule, or two or more shell layers different from each other may be introduced to easily adjust a color gradation effect and discoloration pattern, thereby maximizing product aesthetics and simultaneously, optimally improving stability of the oil-soluble active ingredient included in the core layer.

The second binder included in the shell layer of the microcapsule according to an exemplary embodiment of the present invention may be one or more selected from glycerophospholipids such as lecithin derived from plants such as soybean, corn, peanut, rapeseed, barley, etc., lecithin derived from animals such as egg yolk and cattle, etc., and lecithin derived from microorganisms such as Escherichia coli, etc., hydrogenated or hydroxylated lecithin, etc.; naturally occurring carbohydrates such as dextrins including alpha-cyclodextrin, beta-cyclodextrin, gamma-cyclodextrin and HP-beta-cyclodextrin (hydropropyl-β-cyclodextrin), etc., pectin, starch, agar, and mannan, etc.; and acrylic acid or methacrylic acid alone such as vinyl pyrrolidone-acrylic acid copolymer, methyl methacrylate-acrylic acid copolymer, methyl methacrylate-methacrylic acid copolymer, polyacrylic acid (PAA), and polymethacrylic acid, etc., or copolymers thereof. Here, preferable examples of the glycerophospholipids may include hydrogenated lecithin, enzymatically decomposed lecithin, enzymatically decomposed and hydrogenated lecithin, hydroxy lecithin, etc. In the case of the hydrogenated lecithin, the oil-soluble active ingredient may be stably bound by an amphipathic structure, and it is more preferred since oxidation stability and shatter resistance of the oil-soluble active ingredient may be improved by only adding the hydrogenated lecithin in a small content, but these examples thereof are not limited thereto. In addition, it is preferred that the hydrogenated lecithin has a lower content of phosphatidyl choline contained therein.

An average diameter of the color changing microcapsule according to the present invention is not limited as long as it is 1000 μm or less, but the average diameter is preferably 50 μm to 1000 μm, and more preferably 100 μm to 500 μm, in order to secure an improved color tone elution property due to proper destructibility without causing feeling of irritation. Here, the average diameter of the core layer of the microcapsule may be 10 μm to 300 μm, but is not limited thereto.

In addition, the color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention may have the above-described combination to remarkably improve stability of the color changing microcapsule in the formulation, and to completely shield the color tone of the core layer by the shell layer. Further, the microcapsules are homogeneously destructed, and thus, it is possible not only to have attractive coloring without uneven color points, but also to suppress uncomfortable feeling due to residues.

The microcapsule according to an exemplary embodiment of the present invention may further include one or more shell layers without including the colorant to provide more excellent stability of the oil-soluble active ingredient included in the core layer. In addition, the further inclusion may be for more completely concealing the color tone of the core layer, and may be formed to have an average thickness of 10 to 100 μm, but the average thickness is not limited thereto.

The shell layer disposed at the outermost portion of the microcapsule according to an exemplary embodiment of the present invention may include at least one colorant selected from titanium dioxide and mica as a main ingredient. It is preferred that the shell layer includes a mixture of the titanium dioxide and the mica to completely conceal the color tone of the core layer into white color, and it is preferred to mix 50 to 100 parts by weight of mica based on 100 parts by weight of the titanium dioxide, but is not limited thereto.

Further, the shell layer including the titanium dioxide and the mica as the main components may further include at least one concealing aid selected from alumina, talc, kaolin, sericite, boron nitride, and bentonite, etc., and the concealing aid may be preferably selected from alumina, sericite, and bentonite, etc.

In the microcapsule according to an exemplary embodiment of the present invention, the colorant of the core layer and the colorant of the shell layer may be formed in a content ratio of 1:0.5 to 1:2.0 (wt:wt), and preferably, 1:0.8 to 1:1.6.

The color changing cosmetic composition for make-up according to the present invention may have the colorant in the core at a high content relative to those of conventional color changing cosmetic compositions by introducing the core layer including the colorant into the composition. In addition, the colorant of the core layer may be more stably encapsulated by the above-described combination of the binder, thereby exhibiting a clear color change and a beautiful gradation effect, and simultaneously, maximizing stability of the oil-soluble active ingredient of the core layer.

Here, the core layer of the microcapsule may include the colorant at a high content ranging from 10 to 40 wt%, preferably 20 to 40 wt%, and more preferably 25 to 35 wt%, based on a total weight of the microcapsule.

The microcapsule included in the color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention is characterized by having a strength in which the microcapsule is not destroyed until it is treated with ultrasonic waves (15W, 28kHz) for 1 minute or homogenized at 3000 rpm for 10 minutes. The microcapsule having the strength property is not destroyed during processes and has process advantages.

Further, in the color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention, the colorant may include one or more selected from an inorganic pigment and an organic pigment, and preferably, metal oxide. Here, non-examples of the inorganic pigment may include white pigments such as titanium dioxide (hydrophobic titanium dioxide, etc.), zinc oxide, and zinc sulfide, etc., extender pigments (calcium carbonate, barium sulfate, silica, aluminum hydroxide, kaolin clay, talc, bentonite, etc.), black pigments (carbon black such as channel black, furnace black, thermal black, lamp black, and Ketjen black, etc.), red pigments (iron oxide such as bengala, etc., red lead, molybdenum red, and cadmium red, etc.), yellow pigments (lead oxide, chrome yellow, yellow iron oxide, and cadmium yellow, etc.), blue pigments (royal blue, and navy blue, etc.), etc., and a ferromagnetic material may also be used as the inorganic pigment. Non-limiting examples of the ferromagnetic material may include ferromagnetic metals (powders) such as iron, cobalt, and nickel, etc.; ferromagnetic alloys (powders) such as magnetite, and ferrite, etc.; ferromagnetic metal oxides (powders) such as magnetic iron oxide, etc., but the ferromagnetic material is not limited thereto. Non-limiting examples of the metal oxide may include iron oxide, aluminum oxide, zirconium oxide, cobalt oxide, cerium oxide, nickel oxide, tin oxide, and zinc oxide, etc., but the metal oxide is not limited thereto.

Further, the organic pigment may be selected from azo-based pigment, phthalocyanine-based pigment, quinacridone-based pigment, isoindolinone-based pigment, perinoneㆍperylene-based pigment, threne-based pigment, dioxazine-based pigment, anthraquinone-based pigment, indigo-based pigment, aniline-based pigment, diketopyrrolopyrrole-based pigment, xanthene-based pigment, pyrene-based pigment, quinoline-based pigment, triphenylmethane-based pigment, fluorane-based pigment, etc., or may be an insoluble salt thereof (salt of metals such as sodium, potassium, calcium, barium and aluminum, etc.). Non-examples thereof may include insoluble azo pigments or azo lake pigments [orange or red pigments(for example, β-naphthol-based azo pigments such as Pigment Red 1, 3, 4, 6, 48, 57:1 (Red No. 202), etc.); pyrazolone-based azo pigments such as Pigment Red 37, and Pigment Orange 13, etc., green pigments(metal complex salts of azo compounds such as Pigment Green 10, etc.), etc., and further, condensation azo compounds, high molecular weight azo pigments, and azo pigments including azomethine groups, and azomethine pigment, etc.], the phthalocyanine-based pigments(blue pigments such as copper phthalocyanine, for example, Pigment Blue 15 and 15:3(phthalocyanine blue), etc., Pigment Green 7(phthalocyanine green), etc.), the quinacridone-based pigments(purple pigments such as Pigment Violet 19, etc.), the isoindolinone-based pigments(yellow pigments such as Pigment Yellow 110, etc.), the perinoneㆍperylene-based pigment(red pigments such as Pigment Red 179, 190, etc.), the threne-based pigments(blue pigments such as Pigment Blue 60, etc.), the dioxazine-based pigments(purple pigments such as Pigment Violet 23, etc.), the anthraquinone-based pigments(yellow, orange or red pigments such as Pigment Yellow 108, 123, Pigment Red 83, 177, etc.), the indigo-based pigments or thio indigo-based pigments(blue pigments such as indigo, and indigo white, etc.; purple pigments such as indirubin, etc.; red pigments such as thio indigo, and pigment red 88, etc.), the black pigments such as aniline-based black, etc., the diketopyrrolopyrrole-based pigments, the benzimidazolone-based pigments, etc.

In the color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention, the hydrophilic gelling agent may be one or more selected from polyacrylic acid, polyacrylamide, polymethacrylic acid, polyhydroxyethyl methacrylate, polyacrylic acid-polymethacrylic acid copolymer, polyacrylic acid-polyacrylamide copolymer, polymethacrylic acid-polyacrylamide copolymer, polyethylene glycol, poly(N,N-ethylaminoethyl methacrylate), polyester(for example, polyester-1), hyaluronic acid, agar, chitosan, ammonium acryloyldimethyl taurate/VP copolymer, xanthan gum, cellulose, cellulose ether, polyvinyl derivative, alginate, and polyacrylate, etc., and preferably, polyacrylic acid, polyacrylamide, polymethacrylic acid, polyester, hyaluronic acid, etc.

Further, the color changing cosmetic composition for make-up according to an exemplary embodiment of the present invention may further include an additional ingredient selected from silicone oil, hydrocarbon oil, a surfactant, a filler, a thickener, a film forming agent, a polymer, a preservative, a silicone elastomer, a self-tanning agent, a colorant, an antioxidant, a pH adjusting agent, and fragrance, the additional ingredient having a content of 0.01 to 70 wt% based on the total weight of the cosmetic composition. However, the additional ingredient is not limited thereto, and the color changing cosmetic composition for make-up may further include additional ingredients used in the art.

Among the above-described additional ingredients, non-limiting examples of the silicone oil may include cyclomethicone, methicone, phenyltrimethicone, methiconol, etc., and non-limiting examples of the hydrocarbon oil may include squalane, polybutene, polyisobutene, polydecene, hydrogenated polydecene, etc. In addition, non-limiting examples of the surfactant may include polyhydric alcohols including glyceryl monostearate, polyglyceryl-4 isostearate, sorbitan monostearate, and sugar ester· monostearate; polyoxyethylene methylpolysiloxane copolymer including fatty acid esters, i.e., PEG-8 dimethicone, PEG-10 dimethicone, PEG-9 methyl ether dimethicone, PEG-3 dimethicone and PEG-11 methyl ether dimethicone; poly(oxyethylene·oxypropylene)methylpolysiloxane copolymer including PEG/PPG-20/20 butyl ether dimethicone, and PEG/PPG-20/20 dimethicone; and alkyl chain·silicone chain branched poly(oxyethylene· oxypropylene)methylpolysiloxane copolymer including cetyl PEG/PPG-10/1-dimethicone and lauryl PEG-9-polydimethylsiloxyethyldimethicone. The filler and the thickener may be any material used in the art besides the above-described hydrophilic gelling agent so that the viscosity of the cosmetic composition is 800 to 2000 cps at 20.

Non-limiting examples of the film forming agent may include PVA-based resins; acrylamide-based resins; acrylic acid-based resins; polysaccharide-based resins; celluloses selected from methylcellulose, ethylcellulose, propylcellulose, butylcellulose, pentylcellulose, hexylcellulose, heptylcellulose, octylcellulose, nonylcellulose, decylcellulose, carboxymethylcellulose, etc.; terpene-based resins selected from candelilla resin, hydrogenated rosin acid pentaerythrityl, hydrogenated abietic acid glyceryl, etc.; acrylic-silicone graft copolymers selected from trimethylsiloxy silicate, (acrylic acid alkyl/dimethicone) copolymer, (acrylates/acrylic acid ethylhexyl/methacrylic acid dimethicone) copolymer, etc.; silicone-based resins selected from polymethylsilsesquioxane, polyphenylsilsesquioxane, etc. Non-limiting examples of the preservative may include capryl glycol, paraoxybenzoic acid alkyl ester, benzoic acid, sodium benzoate, sorbic acid, potassium sorbic acid, phenoxyethanol, paraben, pentanediol, benzoic acid, salicylic acid, dihydroacetic acid or a salt thereof, ethylhexyl glycerin, 1,2-hexanediol, capryl glycol tropolone, p-oxybenzoic acid ester, 3-trifluoromethyl-4,4'-dichlorocarbanilide, and 2,4,4'-trichloro-2-hydroxydiphenyl ether, etc. Non-limiting examples of the silicone elastomer may be one or more selected from dimethicone dimethicone/vinyl dimethicone crosspolymer, and cyclomethicone dimethicone/vinyl dimethicone crosspolymer, etc.

In addition, non-limiting examples of the antioxidant may include adenosine, albutin, vitamin C, vitamin B3, vitamin B5, vitamin H, kojic acid, and acetyl glucosamine, etc. It is preferred that an acidic material and alkaline material are mixed and used as the pH adjusting agent so that pH value of the cosmetic composition is able to be maintained between 5.0 to 7.0. Non-limiting examples of the acidic material preferably include heavy acidic materials such as lactic acid, citric acid, malic acid, glycolic acid, a mixture thereof, etc., and non-limiting examples of the alkaline material preferably include heavy alkaline materials such as triethanolamine, sodium chloride, sodium hydroxide, sodium citrate, sodium lactate, a mixture thereof, etc., but these are not limited thereto.

The color changing cosmetic composition for make-up according to the present invention may be formulated into a makeup base, a foundation, a skin cover, a lipstick, a lip gloss, face powder, a two-way cake, an eye shadow, a cheek color, and an eyebrow pencil, etc.

Hereinafter, the present invention will be described in more detail by the following Examples. However, the following Examples of the present invention have been described to help the understanding of the present invention. Therefore, the scope of the present invention is not limited to these Examples in any way.

(Example 1)

10g of coenzyme Q10(manufactured by Zhejiang NHU., China), 69g of mannitol(manufactured by Ingredion, product name: Mannitol), 30g of cellulose(manufactured by JRS Germany), and 1g of corn starch (manufactured by Samyang Genex Corporation, product name: Q1) were added to a mixed solvent containing 120g of purified water and 200g of ethanol, and completely dissolved at 40℃. A mixed colorant including 70g of yellow iron oxide (manufactured by Sun Chemical Corporation, product name: C33-8021 SunCROMA Yellow Iron Oxide), 20g of red iron oxide (manufactured by Sun Chemical Corporation, product name: C33-128 SunCROMA Red Iron Oxide), and 10g of black iron oxide(manufactured by Sun Chemical Corporation, product name: C33-134 SunCROMA Black Iron Oxide) was added thereto, and well-dispersed in a homogenizer(manufactured by IKA, product name: homogenizer) to prepare a core layer coating solution. A solvent of the core layer coating solution was evaporated by using a pelletizer(model name: WLB-350) to obtain core layer particles(particle size: 300 μm, yield = 90%).

Then, 3g of hydrogenated lecithin (product name: Lecinol S-10), 94g of corn starch(manufactured by Samyang Genex Corporation, product name: Q1) and 3g of polyacrylic acid(manufactured by Lubrizol, product name: Carbopol) were added to 4500g of purified water, and completely dissolved at 40℃. Next, 60g of titanium dioxide(manufactured by Kronos, product name: Purolan E 171 A) and 40g of mica(manufactured by CQV, product name: Synthetic Mica Powder 1000D) were added thereto and well-dispersed by a homogenizer to prepare a shell layer coating solution. The shell layer coating solution and 52g of the above-obtained core layer particles were used to obtain color changing microcapsule particles (particle size: 300 to 500μm, yield: 60%) by using a fluidized bed dryer(FBL-10).

(Example 2)

Color changing microcapsule particles were obtained in the same manner as in Example 1, except that the hydrogenated lecithin was replaced with soya SPL 75H(70% of PC content) instead of using Lecinol S-10(35 to 35% of PC content).

(Example 3)

Color changing microcapsule particles were obtained in the same manner as in Example 1, except that the hydrogenated lecithin was replaced with phospholipon 90H(90% of PC content) instead of using Lecinol S-10(35 to 35% of PC content).

(Example 4)

Color changing microcapsule particles were obtained in the same manner as in Example 1, except that beta carotene(Hefei TNJ Chemical Industry) was used instead of using the coenzyme Q10, and 7.5g of emulsifier(manufactured by Ilshin Wells, product name: Almax 9060) was further used.

(Comparative Example 1)

Color changing microcapsule particles were obtained in the same manner as in Example 1 except that the corn starch was not used.

(Comparative Example 2)

Color changing microcapsule particles were obtained in the same manner as in Example 1 except that the lecithin(manufactured by Lucas Meyer, product name: PRO-LIPO C) was used instead of using the corn starch.

(Examples 5 to 8 and Comparative Examples 3 to 5)

Oil-in-water type cream formulations were prepared according to compositions of Table 1 below, respectively.

Raw materials 1 to 10 were heated and adjusted at 75℃ to prepare an oil ingredient(phase A), and raw materials 11 to 13 were heated and adjusted at 75℃ to prepare a water ingredient(phase B). The oil ingredient was added to the water ingredient, and emulsified particles were homogenized with a homomixer(3000 rpm) for 5 minutes. Then, the obtained product was defoamed, filtered, and cooled to prepare oil-in-water type cream formulations.

The respective formulations prepared in Examples 5 to 8 and Comparative Examples 3 to 5 were evaluated as follows, and results thereof were shown in Tables 2 to 3 below.

1. Content analysis of oil-soluble active ingredient

In order to conduct a content analysis of the oil-soluble active ingredient, HPLC analytical conditions were set up and the experiment was conducted. Changes in temperature stability at 4℃, 25℃ and 50℃ for 4 weeks were shown in Table 2 below.

(Content analysis of coenzyme Q10)

HPLC column : Kinetex C18 100A

Temperature : 30℃

Mobile phase : 100% MeOH

Injection volume : 20㎕

Flow rate : 0.15 ml/min

Detection wavelength : UV 450nm

(1) 0.1 g of each formulation was transferred to a 10ml volumetric flask and filled up to 10ml with chloroform.

(2) Each formulation was subjected to ultrasonic treatment in an ultrasonicator for 30 minutes.

(3) Each product was shaken with a shaker, filtered through a 4.5μm filter, and analyzed for the content of coenzyme Q10.

As shown in Table 2, it was confirmed that the color changing cosmetic composition according to the present invention was able to remarkably improve stability of the oil-soluble active ingredient as compared to Comparative Examples.

3. Evaluation of color persistence

0.1g of each formulation was uniformly and reciprocally applied eight times to artificial leather having a predetermined area(1 cm²). An initial color value was measured using a colorimeter(Spectrophotometer ColorQuest XE), and color values were measured in the same manner every one week, and a color difference change value(E) relative to an initial application state was calculated by the following Equation 1. Here, it means that as the value calculated by the following Equation 1 is smaller, color change is smaller, and when the value is 1 or less, it is commonly referred to as "no color change".

(Equation 1)

E = (L²+a²+b²)^1/2

As shown in Table 3, it could be appreciated that the color changing cosmetic composition according to the present invention had the color difference change value(E) of 1.0 or less, thereby showing no change in color difference, and thus, the color changing cosmetic composition was stably usable in the formulation. It indicated that when the color changing cosmetic composition was applied to the formulations, swelling property of the microcapsules was appropriately controlled, thereby solving problems related to reproducibility of the color tone expressed by destroying the microcapsule.

That is, the color changing cosmetic composition according to the present invention may solve problems that occur during color development of the color changing microcapsule, and simultaneously, may enhance unique properties of the color cosmetic composition such as implementation of wide color coordinates and improvement of concealing power. Further, it is expected that the stability of the oil-soluble active ingredient is able to be dramatically improved, thereby not only maximizing a skin care effect, but also providing aesthetic appreciation, and the pleasure of applying make-up.

Claims

A color changing cosmetic composition for make-up comprising, in a physiologically acceptable medium:

a) a microcapsule including a core layer and one or two or more shell layers, the core layer including at least one colorant, an oil-soluble active ingredient, and a first binder, and the shell layer including at least one colorant and a second binder,

b) an alcohol selected from polyol, diol, and monool, the alcohol having a content of 10 wt% or less based on a total weight of the cosmetic composition, and

c) at least one hydrophilic gelling agent,

wherein the first binder includes one or more selected from sugar alcohols, celluloses, and naturally occurring carbohydrates, the second binder includes one or more selected from glycerophospholipids, naturally occurring carbohydrates, and acrylic acid or methacrylic acid alone or copolymers thereof, and the first binder and the second binder have different compositions.
The color changing cosmetic composition for make-up of claim 1, wherein the colorant of the core layer and the colorant of the shell layer are different from each other.
The color changing cosmetic composition for make-up of claim 1, further comprising an additional ingredient selected from silicone oil, hydrocarbon oil, a surfactant, a filler, a thickener, a film forming agent, a polymer, a preservative, a silicone elastomer, a self-tanning agent, a colorant, an antioxidant, a pH adjusting agent, and fragrance, the additional ingredient having a content of 0.01 to 70 wt% based on the total weight of the cosmetic composition.
The color changing cosmetic composition for make-up of claim 1, wherein the microcapsule includes two or more shell layers having different colors.
The color changing cosmetic composition for make-up of claim 1 or 4, wherein the shell layer disposed at the outermost portion of the microcapsule includes at least one colorant selected from titanium dioxide and mica as a main ingredient.
The color changing cosmetic composition for make-up of claim 1, wherein the oil-soluble active ingredient is one or more selected from idebenone, coenzyme Q10, beta carotene, tocopherol, retinol, oleanolic acid, ursolic acid, diacetyl boldine, α-bisabolol, and a derivative thereof.
The color changing cosmetic composition for make-up of claim 1, wherein the microcapsule further includes one or more shell layers without including the colorant.
The color changing cosmetic composition for make-up of any one of claims 1 to 7, wherein the colorant of the core layer has a content of 10 to 40 wt% based on a total weight of the microcapsule.
The color changing cosmetic composition for make-up of claim 1, wherein the colorant of the core layer and the colorant of the shell layer are formed in a content ratio of 1:0.5 to 1:2.0(wt:wt).
The color changing cosmetic composition for make-up of claim 1, wherein the microcapsule has an average diameter from 5μm to 500μm.
The color changing cosmetic composition for make-up of claim 1, wherein the shell layer include two or more shell layers containing one or more different colorants.
The color changing cosmetic composition for make-up of claim 1, wherein the colorant is selected from an inorganic pigment and an organic pigment.
The color changing cosmetic composition for make-up of claim 12, wherein the colorant is at least one metal oxide selected from iron oxide, aluminum oxide, zirconium oxide, cobalt oxide, cerium oxide, nickel oxide, tin oxide, and zinc oxide.
The color changing cosmetic composition for make-up of claim 1, wherein the hydrophilic gelling agent is one or more selected from polyacrylic acid, polyacrylamide, polymethacrylic acid, polyhydroxyethyl methacrylate, polyacrylic acid-polymethacrylic acid copolymer, polyacrylic acid-polyacrylamide copolymer, polymethacrylic acid-polyacrylamide copolymer, polyethylene glycol, poly(N,N-ethylaminoethyl methacrylate), polyester, hyaluronic acid, agar, chitosan, ammonium acryloyldimethyl taurate/VP copolymer, xanthan gum, cellulose, cellulose ether, polyvinyl derivative, alginate, and polyacrylate.
The color changing cosmetic composition for make-up of claim 1, wherein the cosmetic composition is formulated into a makeup base, a foundation, a skin cover, a lipstick, a lip gloss, face powder, a two-way cake, an eye shadow, a cheek color, and an eyebrow pencil.