CN112996474A - Oil-in-water skin care cosmetic composition containing oil gelling agent - Google Patents

Abstract

The present invention relates to an oil-in-water type skin care cosmetic composition containing an oil gelling agent, and more particularly, to an oil-in-water type skin care cosmetic composition which contains an oil gelling agent in an oil phase as an inner phase and a carbomer thickener in an aqueous phase, and thus can improve the stability of the dosage form and improve the feeling of use as a whole. According to the present invention, an oil-in-water skin care cosmetic composition having excellent formulation stability and having an excellent overall feeling of use such as spreadability and sticky feeling even when a small amount of a surfactant is used can be provided.

Description

Oil-in-water skin care cosmetic composition containing oil gelling agent

Technical Field

The present invention relates to an oil-in-water type skin care cosmetic composition containing an oil gelling agent, and more particularly, to an oil-in-water type skin care cosmetic composition having high formulation stability and improved overall feeling in use by containing an oil gelling agent in an oil phase as an inner phase and a carbomer thickener in an aqueous phase.

The present application claims the benefit of priority of korean patent application No. 10-2018-0137356, filed from korean patent office on 9/11/2018, the entire contents of which are incorporated herein by reference.

Background

With the continuous growth of beauty-related enterprises, it is oriented to a consistent consumer trend to improve the stability of dosage forms and to provide excellent use feeling in the preparation of oil-in-water skin care cosmetic compositions. In order to improve and maintain the stability of the dosage form, a water-soluble thickener which reduces the fluidity of the aqueous phase as the outer phase or a surfactant which improves the emulsifying ability of the oil phase as the inner phase is treated, but there is a problem that the spreadability is lowered in terms of the feeling of use of the dosage form.

In korean patent No. 10-1480688, a water-soluble Film forming agent (Film Former) is used to immediately impart elasticity to the skin and form a soft skin protective Film to improve moisture retention and absorption of active ingredients in order to improve the feeling of use. However, the sticky feeling is aggravated and there is still a problem that the feeling of use is lowered.

As described above, the feeling of use is based not only on the degree of elasticity but also on various elements such as spreadability and sticky feeling, and only some of the elements have been studied so far to improve, and the whole feeling of use cannot be improved and is limited. Therefore, in the case of oil-in-water type skin care cosmetic compositions, it is necessary to develop a formulation which can improve the overall feeling of use while maintaining stability.

[ Prior art documents ]

(patent document 1) Korean granted patent No. 10-1480688

Disclosure of Invention

Technical problem

The present invention has been made to solve the above-mentioned problems, and as a result of studies by the present inventors on a composition having improved overall feeling of use while achieving high formulation stability by preventing separation between an oil phase and an aqueous phase in an oil-in-water type skin care cosmetic composition, the present inventors have found that when the oil phase as an inner phase contains an oil gelling agent and the aqueous phase contains a carbomer thickener, the formulation stability can be improved and the overall feeling of use can be improved, and thus the present invention has been completed. Accordingly, an object of the present invention is to provide an oil-in-water skin care cosmetic composition which has an oil gelling agent in an oil phase as an inner phase and a carbomer thickener in an aqueous phase, thereby minimizing the amount of a surfactant used, and which has excellent formulation stability and an overall excellent feeling of use such as spreadability and a sticky feeling.

Technical scheme

In order to achieve the above object of the present invention, the present invention provides an oil-in-water type skin care cosmetic composition comprising: an oil phase component comprising an oil and an oil gelling agent; and an aqueous phase component containing water and a carbomer tackifier.

Effects of the invention

According to the present invention, by including an oil gelling agent in the oil phase as the inner phase and a carbomer thickener in the aqueous phase, the stability of the formulation can be improved and the overall feeling of use can be improved.

Drawings

Fig. 1 is a diagram illustrating the results of evaluating the dosage form stability of the compositions according to an embodiment of the present invention and a comparative example.

Fig. 2 is a schematic view of the results of evaluating the viscosity change of the compositions according to an embodiment of the present invention and a comparative example.

Fig. 3 is a schematic view of the result of evaluation of feeling of use of the compositions according to an embodiment of the present invention and comparative examples.

Detailed Description

The present invention will be described in detail below with reference to examples and the accompanying drawings.

The names of the compounds mentioned in the present specification refer to those related to the International Cosmetic Ingredient Name (inci) contained in the International Cosmetic Ingredient Dictionary (ICID) by the american Cosmetic Association (CTFA), unless otherwise specified; if no corresponding Name is present in the INCI Name (INCI Name), the compound is referred to according to IUPAC nomenclature as set forth in the International Union of Pure and Applied Chemistry, IUPAC; if no compound expressed according to IUPAC nomenclature is present, it refers to a compound corresponding to a compound name commonly used in the art to which the present invention pertains.

The oil-in-water type skin care cosmetic composition according to the present invention is characterized by comprising: an oil phase component comprising an oil and an oil gelling agent; and an aqueous phase component containing water and a carbomer tackifier.

The term "emulsion dosage form" as used herein refers to a dosage form comprising at least two components, such as an aqueous phase and an oil phase, as a dosage form containing two insoluble phases.

The term "Oil in Water (O/W) type" used in the present invention refers to an emulsion type in which the continuous phase is an aqueous phase and the dispersed phase is an Oil phase in a liquid form, and refers to a macroscopically homogeneous type.

The term "stability of the formulation" as used in the present invention means a degree of hindrance to separation between the oil phase and the water phase under a specific environment, particularly under a low-temperature, high-temperature or long-term storage environment. Specifically, the separation between the oil phase and the water phase is inhibited in a low-temperature environment of 0 ℃ or lower, a high-temperature environment of 30 ℃ or higher, or a long-term storage environment of 4 weeks or longer.

In the conventional oil-in-water type skin care cosmetic composition, in order to prevent the decrease of the use feeling such as elasticity and sticky feeling, the oil phase component is treated by less than 20 wt% relative to the total weight of the composition. However, the oil-in-water type skin care cosmetic composition according to the present invention maintains the stability of the formulation and is excellent in the feeling of use as a whole, even if it contains a relatively high content of oil component, as compared with the conventional compositions.

In the oil-in-water type skin care cosmetic composition according to the present invention, the mixing ratio of the oil phase component and the water phase component may be 30:70 to 5:95 on a weight basis. The ratio is more preferably 25:75 to 10: 90. As described above, by increasing the maximum content of the oil phase component that can be contained in the composition, high glossiness can be provided and the lumping phenomenon can be minimized when applied to the skin.

However, if the content of the oil-phase component is less than 5 wt%, the cosmetic composition may become greasy and the matte use feeling may be reduced when the cosmetic composition is applied to the skin, and if the content exceeds 30 wt%, the emulsion formulation may be difficult to form and the formulation stability may be lowered.

The oil used in the oil phase component may be an ester oil, a silicone oil, or a mixture thereof. The oil-in-water type skin care cosmetic composition has an advantage of providing a moist and soft feeling in use as a hydrophilic type, and conversely, has a disadvantage of decreasing water resistance and cosmetic persistence. In order to improve the disadvantages, hydrocarbon oils such as Liquid Paraffin (Liquid Paraffin), Squalane (Squalane), and the like are not contained in the composition of the present invention, and are preferably excluded at a point where skin irritation can be reduced.

As the ester-based oil, Octyldodecanol (Octyldodecanol), Ethylhexyl pivalate (ethylhexylneopentanoate), hexyl Isononanoate (ethylhexylisonanoate), Ethyl Laurate (Ethyl Laurate), Butyl Laurate (Butyl Laurate), Ethylhexyl Myristate (ethylhexylmyrisate), Isopropyl Myristate (isopropylmyrisate), Octyldodecanol Myristate (Octyldodecyl myrisate), Ethylhexyl oleate (ethylhexyloleate), Ethylhexyl Palmitate (ethylhexylpalmoate), Isopropyl Palmitate (isopropylpalmoate), Ethylhexyl Isopalmitate (ethylhexylacrylate), Ethylhexyl Stearate (ethylhexylstearate), Ethylhexyl Isostearate (ethylhexylstearate), pentaerythritol Triisostearate (isopropylnonyl Myristate), pentaerythritol triisocetyl Stearate (pentaerythritol 2-triisobutyl Stearate), pentaerythritol tetrastearate (Isopropyl Myristate), and mixtures thereof, Diisostearyl Malate (Diisostearyl mallate), phytosterol Isostearyl dilinoleate (Phytosteryl Isostearyl Dimer linear), and the like. Preferably, one or more selected from octyldodecanol, diisostearyl malate, and phytosterol Isostearyl Dimer Dilinoleate may be used.

As the Silicone oil, Polydimethylsiloxane (polydimethysiloxane), Phenylsiloxane (Phenylsiloxane), Alkylmethylsiloxane (Alkylmethylsiloxane), Polydimethylsiloxane (Dimethicone), cyclopolydimethylsiloxane (Cyclomethicone), Dimethiconol (Dimethicone), Dimethicone Copolyol (Dimethicone Copolyol), Silicone Elastomer (Silicone Elastomer), Silicone Resin (Silicone Resin), Dimethicone/Vinyl Dimethicone Crosspolymer (Dimethicone/Polysil Dimethicone/Vinyl Dimethicone Crosspolymer), Silicone-11 (Silicone-11), Silicone-15 (Silicone-15), Silicone-8 (Silicone-8), Silicone-17 (Silicone-17), and the like can be used alone or in combination. Preferably, one or more selected from the group consisting of cyclomethicone, dimethicone, and dimethiconol can be used.

The oil may be present in an amount of 2 to 25 wt% relative to the total weight of the composition. According to the present invention, by containing an oil gelling agent in the oil phase as the inner phase and a carbomer-based viscosity increasing agent in the aqueous phase, the maximum content of the oil phase component that can be contained in the composition can be increased as described above. Of the oil phase components, the main component that provides high gloss is an oil. However, in patent document 1, the maximum content of oil contained in the composition is only 20%, and it is confirmed that the degree of wettability is low. In contrast, the present invention can increase the maximum content of the oil component contained in the composition to 25%. However, if the oil content is less than the lower limit, the degree of smoothness and spreadability may be lowered in terms of the feeling of use, and if the oil content is more than the upper limit, the emulsion stability may be lowered without causing emulsification or separation of the oil phase and the water phase, and the feeling of use may be sticky or greasy.

The purpose of the present invention is to provide an oil-in-water skin care cosmetic composition which has excellent formulation stability and is excellent in overall feeling of use such as spreadability and sticky feeling even when a small amount of a surfactant is used, and which can contain a small amount of the surfactant in the oil phase component. Examples of the surfactant include nonionic surfactants, anionic surfactants, cationic surfactants, and amphoteric surfactants.

Examples of the nonionic surfactant include Mono- (Mono-) and dialkanolamide (Di-alkanolamide), for example, Cocamide monoethanolamine (Cocamide monoethanolamide, Cocamide MEA) and Cocamide Diethanolamine (Cocamide diethanolamide, Cocamide DEA), Amine Oxide (Amine Oxide), Alkyl Polyglucoside (Alkyl Polyglucoside), ethylene Glycol Stearate (Glycol Stearate), and glycerol Stearate (Glycol Stearate). The nonionic surfactant may be ethoxylated, propoxylated or glycerated, and as the ethoxylated nonionic surfactant, there may be mentioned PEG-9to PEG-50Laurate (PEG-9to PEG-50Laurate), PEG-9to PEG-50Palmitate (PEG-9to PEG-50Palmitate), PEG-9to PEG-50Stearate (PEG-9to PEG-50Stearate), PEG-9to PEG-50Palmitate (PEG-9to PEG-50Palmitate), PEG-9to PEG-50Behenate (PEG-9to PEG-50Behenate), PEG-100Stearate (PEG-100Stearate) and the like. The nonionic surfactant may be a glycerinated fatty Alcohol compound, and examples thereof include dodecanol (Lauryl Alcohol), Oleyl Alcohol (Oleyl Alcohol), Cetearyl Alcohol (Cetearyl Alcohol), Oleyl Alcohol/Cetyl Alcohol (Oleyl/cethyl Alcohol), and stearyl Alcohol (octadecenol).

As the anionic surfactant, Fatty Acid Soap (Fatty Acid Soap), alpha-acylsulfonate (alpha-Acyl Sulfonate Salt), alkylsulfonate (Alkyl Sulfonate Salt), Alkylallyl Sulfonate (Alkyl Sulfonate Salt), alkylalaphthalene Sulfonate (Alkyl Sulfonate Salt), alkylsulfonate (Alkyl Sulfonate Salt), POE Alkyl Ether Sulfonate (POE alkylalether Salt), Alkylamide Sulfonate (Alkylamide Sulfonate Salt), alkylphosphate (Alkyl Sulfonate Salt), POE alkylphosphate (POE Alkyl Phosphate), Alkylamide Phosphate (Alkyl amide Sulfonate Salt), alkylacylalkyl Taurate (alkoylsulfonate Salt), N-acylamino Acid Carboxylate (N-Acyl Amino), Alkylamide Phosphate (Alkyl Ether Sulfonate Salt), alkylacylalkyl Ether Sulfonate (Alkyl succinate Salt), alkylacylalkyl Taurate (alkoylsulfonate Salt), and alkylamido Sulfonate (Alkyl succinate Salt), N-acylamino Acid Carboxylate (N-Acyl Sulfonate (Alkyl succinate), Alkyl Ether (Alkyl succinate Salt), and alkylamido Ether (Alkyl succinate Salt) Sodium Alkyl Sulfoacetate (Alkyl Sulfoacetate Salt), Acylated Hydrolyzed Collagen Peptide Salt (Acylated Hydrolyzed Collagen Peptide Salt), Perfluoroalkyl phosphate Ester (Perfluoroalkyl phosphonic Acid Ester), etc.

Examples of the cationic surfactant include alkyltrimethyl Ammonium Chloride (Alkyl Trimethyl Ammonium Chloride), octadecyltrimethyl Ammonium Chloride (Stearyl Trimethyl Ammonium Chloride), octadecyltrimethyl Ammonium Bromide (Stearyl Trimethyl Ammonium Bromide), cetearyltrimethyl Ammonium Chloride (Cetostearyl Trimethyl Ammonium Chloride), dioctadecyldimethyl Ammonium Chloride (distearyldimethyl Ammonium Chloride), octadecyldimethylbenzyl Ammonium Chloride (Stearyl Dimethyl Ammonium Chloride), behenyldimethylbenzyl Ammonium Chloride (behenyldimethyl Ammonium Chloride), diethylaminoethyl stearamide (diacetalkyldimethyl Ammonium Chloride), dimethylaminopropylstearamide (dimthylaminopropyl Stearate), and Quaternary Ammonium Salt of Lanolin (Quaternary Ammonium Salt).

Examples of the amphoteric surfactant include a Carboxybetaine Type (Carboxybetaine Type), an amidobetaine Type (Amidebetaine Type), a Sulfobetaine Type (Sulfobetaine Type), a hydroxysulfobetaine Type (Hydroxy Sulfobetaine Type), an amidosulfobetaine Type (Amide Sulfobetaine Type), a Phosphobetaine Type (Phosphobetaine Type), an aminocarboxylate Type (Amino Carboxylate Type), an imidazole Derivative Type (Imidaline Derivative Type), and an amidoamine Type (Amide Amine Type).

The surfactant used in the present invention has HLB in the range of 1 to 17, and is preferably a nonionic surfactant less irritating to the skin, and more preferably at least one selected from the group consisting of glyceryl stearate, PEG-100stearate, and cetearyl alcohol.

The term "a small amount of surfactant" used in the present invention means that the surfactant is contained in an amount of 0.05 to 3 wt% based on the total weight of the composition for the purpose of optimum formulation stability and feeling upon use, and is in a relatively small amount compared to the amount of surfactant used in conventional oil-in-water type skin care cosmetic compositions. By containing a small amount of a surfactant, skin allergy caused by the coating composition can be prevented.

The oil-in-water type skin care cosmetic composition according to the present invention is an oil-in-water type skin care cosmetic composition containing an oil gelling agent as an inner phase, and when the aqueous phase contains a carbomer-based thickener, it is found that separation between the oil phase and the aqueous phase is hindered, and the feeling of use is improved as a whole, thereby completing the invention.

The term "oil gelling agent" as used herein as a compound that can gel the oil phase of the oil-in-water type skin care cosmetic composition according to the present invention refers to a compound present in the oil phase of the composition. The oil gelling agent may be selected from lipophilic clays, polysaccharides, dextrin esters and mixtures thereof.

Examples of the lipophilic clay include dimethylammonium Hectorite (Dimethyl Alkyl Ammonium Hectorite), distearyldimethyl Ammonium Hectorite (distearyldimethyl Ammonium Hectorite), benzyldimethyloctadecyl Ammonium Hectorite (Benzyl Dimethyl Stearyl Ammonium Hectorite), and Aluminum Magnesium Silicate (Magnesium Silicate) Treated with dioctadecyl Dimethyl Ammonium Chloride, and examples of the polysaccharide include Cellulose (Cellulose), Ethyl Cellulose (Ethyl Cellulose), Carboxymethyl Hydroxyethyl Cellulose (Carboxymethyl Hydroxyethyl Cellulose), Hydroxyethyl Cellulose (Hydroxypropyl Cellulose), and Hydroxypropyl Cellulose (Hydroxypropyl Cellulose), and Cellulose (Methyl Cellulose), and Cellulose (Sodium Cellulose, and Sodium Cellulose), examples thereof include Dextrin Behenate (Dextrin Behenate), Dextrin Isostearate (Dextrin Isostearate), Dextrin Laurate, Dextrin Myristate, and Dextrin Palmitate (Dextrin Palmitate).

In order to improve and maintain the stability of the formulation at high temperatures and the stability of the formulation for a long period of time, the oil gelling agent is preferably one or more selected from the group consisting of disteardimonium hectorite, ethylcellulose, and dextrin palmitate.

The oil gelling agent may be contained in an amount of 0.6 to 2 wt% based on the total weight of the composition. The amount of the surfactant is preferably 0.8 to 1% by weight in terms of the stability of the formulation and the feeling of use as a whole. If the oil gelling agent content is less than the lower limit, the flexibility may be lowered in the sense of use, and if the oil gelling agent content exceeds the upper limit, the dispersion and dissolution of the oil gelling agent may become difficult, the stability of the formulation may be lowered, the product may have a very high level of tackiness strength, and the spreadability may be lowered in the sense of use, and the stickiness may be increased.

As described above, the oil-in-water type skin care cosmetic composition according to the present invention is an invention in which an oil gelling agent is contained in an oil phase as an inner phase, and a carbomer thickener is contained in an aqueous phase, and it is found that the use feeling is improved as a whole while the stability of the formulation is maintained, and the carbomer thickener is contained in the aqueous phase.

The term "carbomer-based tackifier" as used herein refers to a polymer having a non-cyclic aliphatic hydrocarbon backbone (backbone) as a crosslinked acrylic polymer.

The carbomer-based tackifier may be an Acrylate Copolymer, a Polyacrylate-1 crosslinked polymer, or the like, and is more preferably a carbomer having a relatively superior viscosity-increasing effect, a superior feeling in use, and a superior formulation stability compared to other tackifiers.

The carbomer is Lubrizol Corporation to

Is sold under the brand name of (1). Examples of carbomers available from leborun corporation include CARBOPOL934, 940, 941, 980, 981, 1342, 2984, 5984, SILK 100, ETD 2020, 2050, ULTREZ 10, and ULTREZ 30. In addition, an alkaline substance such as Triethylamine (triethylimine), Potassium Hydroxide (Potassium Hydroxide), or Sodium Hydroxide (Sodium Hydroxide) that cross-binds carbomer may be added to increase the viscosity.

The content of the carbomer tackifier can be 0.03-0.2 wt% relative to the total weight of the composition. More preferably 0.05 to 0.2% by weight in terms of the stability of the formulation and the feeling of use as a whole. If the content of the carbomer tackifier is less than the lower limit, the product may not be increased in viscosity to the target level and may be phase-separated to lower the stability of the dosage form, and if the content exceeds the upper limit, the product may have too high strength and may have reduced spreadability in terms of use feeling or increased stickiness.

The oil-in-water skin care cosmetic composition according to the present invention contains an oil gelling agent in an oil phase as an inner phase, and a carbomer thickener in an aqueous phase, and the mixing ratio of the carbomer thickener and the oil gelling agent may be 1:3 to 67 by weight. When the amount of the compound is in the above-mentioned weight ratio, the whole feeling of use can be improved while the stability of the dosage form is maintained.

According to the present invention, by containing an oil gelling agent in the oil phase as the inner phase and a carbomer thickener in the aqueous phase, the overall feeling of use can be improved while maintaining the stability of the dosage form. The term "overall use feeling" as used in the present invention means a combined use feeling of spreadability, a feeling of fit, and a feeling of stickiness required when the oil-in-water type skin care cosmetic composition according to the present invention is formulated into a functional cosmetic for improving skin texture, and a combined use feeling of moisture feeling, elasticity, and glossiness required when the oil-in-water type skin care cosmetic composition according to the present invention is formulated into an anti-aging functional cosmetic.

According to the present invention, a fresh feeling of use can be provided by increased spreadability, excellent fitting feeling, reduced sliminess, and thus the composition of the present invention can be used as a skin texture improving functional cosmetic. In addition, the cosmetic composition can provide excellent gloss by increased moisture feel, increased elasticity, and high gloss, and thus can be used as an anti-aging functional cosmetic. By showing all of the above-described refreshing feeling of use and excellent gloss, the present invention can be used not only for skin care products but also for makeup cosmetics, and can provide effects of making the skin bright and smooth and moist and making the skin look healthy.

The term "skin texture improvement" used in the present invention means to improve roughness or the like of a three-dimensional fine structure formed on the skin surface.

The term "anti-aging" as used in the present invention means to suppress the generation of chloasma, freckles, scars, cuticles, wrinkles, and the like, which are generated on the appearance of the skin.

The present invention provides the use of an oil phase component comprising an oil and an oil gelling agent and an aqueous phase component comprising water and a carbomer based viscosity increasing agent in the preparation of an oil-in-water skin care cosmetic composition or cosmetic.

The oil-in-water type skin care cosmetic composition according to the present invention contains an ingredient having the skin texture improving activity as an active ingredient, and thus can be formulated into a skin texture improving functional cosmetic. Examples of the active ingredient include Stem Cell Culture solution (Stem Cell Culture Media), Geranylgeranyl Isopropanol (Geranylgeranyl Isopropanol), SH-Polypeptide-7 (SH-Polypeptide-7), nicotinamide (Niacinamide), Urea (Urea), and D-Panthenol (D-pantool). By containing the active ingredient, not only the state of the skin surface but also the skin texture as a fine structure reflecting the internal state of the skin can be improved.

The oil-in-water type skin care cosmetic composition according to the present invention contains the component having the anti-aging activity as an active ingredient, and thus can be formulated into an anti-aging functional cosmetic. Examples of the active ingredient include inhibitors of Caveolin-1 (Caveolin-1) and the like, Stem Cell Culture Media (Stem Cell Culture Media), Esculetin (Esculetin), and the like. By containing the above active ingredient, the formation of chloasma, freckle, stain, cutin, wrinkle, etc. occurring in the appearance of the skin can be suppressed.

In the oil-in-water type skin care cosmetic composition according to the present invention, other ingredients blended in a general cosmetic may be blended together with the ingredients as needed. Examples of the blending component that may be added in addition to the above-mentioned components include lubricants, pigments, bactericides, antioxidants, pH adjusters, moisturizers, pigments, perfumes, cooling agents, antiperspirancy (antiperspirant) and the like.

Examples of the lubricant include Long chain Acyl glutamic Acid Cholesteryl Ester (Long chain Acyl glutamic Acid Cholesteryl Ester), Cholesteryl Hydroxystearate (Cholesteryl Hydroxystearate), 12-Hydroxystearate (Hydroxystearate), Stearic Acid (Stearic Acid), abietic Acid (Rosin Acid), and Lanolin Fatty Acid Cholesteryl Ester (Lanolin Fatty Acid Cholesteryl Ester).

Examples of the pigment include Silicic Acid (silica Acid), Anhydrous Silicic Acid (Anhydrous silica Acid), Magnesium Silicate (Magnesium Silicate), Talc (Talc), Sericite (Sericite), Mica (Mica), Kaolin (Kaolin), ferric Oxide (Bengala), Clay (Clay), Bentonite (Bentonite), Titanium-Coated Mica (Titanium Coated Mica), Bismuth Oxychloride (Bismuth Oxychloride), Zirconium Oxide beads (Zirconium Oxide), Magnesium Oxide (Magnesium Oxide), Zinc Oxide (Zinc Oxide), Titanium Oxide (Titanium Oxide), Aluminum Oxide (Aluminum Oxide), Calcium Sulfate (Calcium Sulfate), Barium Sulfate (Barium Sulfate), Magnesium Sulfate (Magnesium Sulfate), Calcium Carbonate (Calcium Carbonate), Magnesium Carbonate (Magnesium Carbonate), Calcium Sulfate (Calcium Oxide), Chromium Oxide (Chromium Oxide), and Chromium Oxide complex pigments thereof; examples of the organic pigments include organic pigments such as Polyamide (Polyamide), Polyester (Polyester), Polypropylene (Polypropylene), Polystyrene (Polystyrene), Polyurethane (Polyurethane), Vinyl Resin (Vinyl Resin), Urea Resin (Urea Resin), Phenol Resin (Phenol Resin), fluorine Resin (Fluoro Resin), Silicone Resin (Silicone Resin), Acrylic Resin (Acrylic Resin), Melamine Resin (Melamine Resin), Epoxy Resin (Epoxy Resin), Polycarbonate Resin (Polycarbonate Resin), divinylbenzene-Styrene Copolymer (Divinyl benzene Copolymer), Silk Powder (Silk Powder), Cellulose (Cellulose), Cl Pigment Yellow (Cl Pigment Yellow), Pigment Orange (Pigment Orange), and composite pigments of inorganic pigments and organic pigments thereof.

Examples of the bactericide include Hinokitiol (Hinokitiol), Triclosan (Triclosan), Triclosan (trichlorohydroxydiphenyl Ether), Chlorhexidine Gluconate (chlorexidine Gluconate Salt), Phenoxyethanol (phenoxythane), resorcinol (Resorcin), isopropylmethylphenol (isoproxyphenol), Azulene (Azulene), Salicylic Acid (Salicylic Acid), Zinc Pyrithione (Zinc Pyrithione), Benzalkonium Chloride (Benzalkonium Chloride), sensitizing Dye 301 (quaternary ammonium Salt-51, sensitizing Dye No.301, Quaternium-51), Sodium mononitroguaiacol (Sodium mononitroniaoacol), Undecylenic Acid (Undecylenic Acid), and the like.

Examples of the antioxidant include Butylated hydroxyanisole (Butylated hydroxyanisole), Propyl Gallate (Propyl Gallate), Erythorbic Acid (Erythorbic Acid), and the like, examples of the pH adjuster include Citric Acid (Citric Acid), Sodium Citrate (Sodium Citrate), Malic Acid (Malic Acid), Sodium Malate (Sodium maleate), Fumaric Acid (Fumaric Acid), Sodium Fumarate (Sodium Fumarate), Succinic Acid (Succinic Acid), Sodium Succinate (Sodium Succinate), Sodium Hydroxide (Sodium Hydroxide), disodium Phosphate (Dibasic Sodium Phosphate), and the like, and examples of the humectant include a water-soluble low-molecular humectant, a fat-soluble low-molecular humectant, a water-soluble polymer, a fat-soluble polymer, and the like.

In addition, the blending component that can be added is not limited to this, and any of the above components can be blended within a range that does not impair the object and effect of the present invention.

The oil-in-water type skin care cosmetic composition according to the present invention further comprises a cosmetically or dermatologically acceptable medium or base, and thus may be formulated into any formulation conventionally prepared in the art, for example, a solution, a suspension, a cream, a lotion or emulsion, a powder, an ointment, a spray, a concealer stick, etc., without being limited thereto. The compositions may be prepared according to conventional methods in the art.

[ examples ] A method for producing a compound

The present invention will be described in detail below with reference to examples. However, the following examples are provided for understanding the contents of the present invention, and the contents of the present invention are not limited to the following examples, and modifications, substitutions, and insertions, which are generally known in the art, may be made, and are also included in the scope of the present invention.

<Preparation example 1>Preparation of examples 1 to 3 and comparative examples 1 to 6

The aqueous phase components containing purified water and CARBOPOL940 were mixed with a mixer and stirred at 80 ℃ to completely dissolve the components. After the oil phase components including the oil gelling agent and the oil were dissolved and dispersed in a separate stirrer, the surfactant was mixed and stirred while being heated at 80 ℃. Then, the oil phase component was slowly added to the water phase component, and emulsification was performed by a homomixer at the same time. The oil-in-water type skin care cosmetic compositions according to examples 1 to 3 and comparative examples 1 to 6 of the present invention were prepared by cooling to 30 ℃. The components (unit: wt%) are shown in table 1 below.

<Test example 1>Evaluation of stability of formulation of composition based on the content of oil gelling agent and aqueous phase thickener 1

1. Preparation of the composition

The compositions of examples 1 to 3 and comparative examples 1 to 6 prepared in preparation example 1 were used.

2. Method for evaluating stability of dosage form

The prepared compositions of examples 1 to 3 and comparative examples 1 to 6 were stored in a thermostatic bath, and the stability of the dosage form was visually observed every week at temperatures of freezing (-15 ℃), refrigerating (0 ℃), normal temperature (25 ℃), 30 ℃ and 45 ℃. Further, the treatment was carried out cyclically for 24 hours at 45 ℃→ 30 ℃→ freezing (-15 ℃) each for 8 hours, and the stability of the dosage form was visually observed every week. The results are shown in table 2 below. The symbol "o" indicates a stable state of the dosage form without separation, and "x" indicates a state of the dosage form unstable due to separation. In the case of the unstable state, the time when phase separation was observed is described below the × mark. The photograph shown in FIG. 1 is a photograph in which the fourth formulation stability of the compositions of example 1 and comparative examples 1 to 3 at 45 ℃ in the compositions was confirmed by naked eyes.

3. Evaluation results of stability of dosage form

[ TABLE 2 ]

As shown in table 2 above and fig. 1, when the compositions according to examples 1 to 3 of the present invention, which contain the oil gelling agent and the carbomer-based tackifier in the preferred content ranges, all showed no phase separation for 4 cycles and maintained the formulation stability under the conditions of freezing, refrigeration, normal temperature, 30 ℃, 45 ℃ and circulation.

In contrast, in the case of the composition of comparative example 1 containing no oil gelling agent, phase separation was observed in the third week at 30 ℃, in the first week at 45 ℃ and in the circulation.

In the case of the composition of comparative example 2 containing no oil gelling agent, more than the preferable content (0.03 to 0.2 wt%) of the carbomer-based thickening agent, and 0.14 wt% of the neutralizing agent, phase separation was observed in the second week at 45 ℃ and in the first week under the circulating condition. From this, it was found that the composition could not be stabilized by merely increasing the content of the carbomer tackifier.

In the case of the composition of comparative example 3 containing no carbomer-based tackifier, phase separation was observed at normal temperature in the third week, at 30 ℃, at 45 ℃, and at the circulation conditions in the first week.

In the case of the compositions of comparative examples 4 to 6 containing the oil gelling agent at a lower limit value of less than the preferable content (0.6 to 2% by weight), phase separation was observed at 45 ℃ for the third week.

<Test example 2>Evaluation of stability of formulation of composition based on the content of oil gelling agent and aqueous phase thickener 2

Test example 1 confirmed that the composition of examples 1 to 3, which contained all of the oil gelling agent and the carbomer tackifier, exhibited excellent formulation stability, and the following experiment was performed to specifically evaluate the preferable content ranges and ratios of the oil gelling agent and the carbomer tackifier.

1. Preparation of the composition

In preparation example 1, a composition (unit: weight%) was prepared by the same method as in example 3, except that dextrin palmitate as an oil gelling agent and CARBOPOL981 as a carbomer-based viscosity increasing agent were mixed according to the components of the following table 3.

2. Method for evaluating stability of dosage form

Compositions prepared according to the components of table 3 below were stored in a thermostatic bath at frozen (-15 ℃), refrigerated (0 ℃), ambient (25 ℃), 30 ℃) and 45 ℃ with visual dosage form stability every week. Further, the treatment was carried out cyclically for 24 hours at 45 ℃→ 30 ℃→ freezing (-15 ℃) each for 8 hours, and the stability of the dosage form was visually observed every week. The results are shown in table 3 below.

< evaluation criteria >

O: under the conditions of freezing, cold storage, normal temperature, 30 ℃, 45 ℃ and circulation, the stable preparation can keep the stability of the preparation without phase separation in 4 periods.

And (delta): the stability of the dosage form was maintained without phase separation for 4 weeks under freezing, refrigeration, and ambient temperature conditions, whereas the phase separation occurred within 4 weeks at 45 ℃ and under cycling conditions.

X: an unstable dosage form that phase separates within 4 weeks even under ambient conditions.

3. Evaluation results of stability of dosage form

[ TABLE 3 ]

As shown in Table 3 above, the oil gelling agent and the carbomer based tackifier were contained in the preferred content ranges and ratios, showing no phase separation or only partial separation during 4 cycles to maintain the stability of the dosage form. On the contrary, when the oil gelling agent and the carbomer-based thickener are contained in less than the preferable content range, it is confirmed that the formulation stability is lowered. In this case, when any one of the oil gelling agent and the carbomer tackifier is contained in a preferable amount and the other component exceeds a preferable content range, it is also shown that the stability of the formulation is maintained. However, in this case, it can be confirmed from the following test example 4 that the spreadability is reduced and the sticky feeling is increased in the use feeling. Therefore, it was confirmed that the oil gelling agent and the carbomer tackifier contained in the composition need to be contained in preferable amounts in order to achieve the object of the present invention.

<Test example 3>Evaluation of viscosity change of composition according to ingredients

1. Preparation of the composition

The compositions of examples 1 to 3 and comparative examples 1 to 6 prepared in preparation example 1 were used.

2. Viscosity evaluation method

The viscosity was measured using a Bohler Viscometer (Brookfield Viscometer LVDV-II, Spindle No.3,12rpm, 2min) and the results (in cps) are shown in Table 4 below and also in FIG. 2.

3. Results of viscosity evaluation

[ TABLE 4 ]

As shown in table 4 above and fig. 2, it was confirmed that the viscosity sharply increased on day 1 (next day of preparation, second day of preparation) and the increased viscosity remained for 4 weeks in the compositions of examples 1 to 3 containing the oil gelling agent and the carbomer-based thickener in the preferred content ranges and ratios, whereas the viscosity increased on the next day was small compared to the initial preparation and a relatively low viscosity state continued for 4 weeks in the compositions of comparative examples 1 to 6. In the case of the compositions of comparative examples 1 to 6, it was confirmed that the viscosity started to decrease from week 3 onward, and it is expected that the stability of the dosage form could not be maintained for a long time while the viscosity remained below the 6000cps reference value, and there was a possibility that the dosage form collapsed.

<Test example 4>Combined according to ingredientsEvaluation of feeling of use

1. Preparation of the composition

The compositions of examples 1 to 3 and comparative examples 1, 2 and 7 prepared in preparation example 1 were used.

2. Method for evaluating feeling of use

50 women of 20-40 years old who had no skin disease and allergy symptoms and had no past history of skin allergy were treated with 30. mu.g of each of the compositions of examples 1 to 3 and comparative examples 1, 2 and 7, and then the overall feeling of use for spreadability, moisture, fit, elasticity, stickiness and gloss was evaluated by a 10-point scale method. The results are shown in fig. 3 below.

3. Evaluation results of feeling of use

As can be confirmed from the results of fig. 3, the compositions according to examples 1 to 3 of the present invention, which contain the oil gelling agent and the carbomer-based tackifier in the preferred content ranges, exhibited excellent overall use feeling for spreadability, moisture feeling, body fit feeling, elasticity, sliminess, and gloss.

In contrast, the composition of comparative example 1 containing no oil gelling agent exhibited a slightly higher moisture feel and an equivalent spreadability than the compositions of examples 1 to 3, but exhibited a low feeling of use for the other reasons, i.e., a pleasant feel, an elasticity, a sticky feel, and a moist feel.

In the case of the composition of comparative example 2 containing no oil gelling agent and containing the carbomer-based thickener in an amount exceeding the preferable content (0.03 to 0.2% by weight), the moisture feel was slightly higher than that of the compositions of examples 1 to 3, but the spreadability as the initial feeling in use was remarkably low, and the feeling in use for the other feeling of the touch, the elasticity, the slimy feel, and the glossiness was also reduced.

When the composition of comparative example 7 containing the oil gelling agent in an amount of 2.5 wt% in excess of the preferable content (0.6 to 2 wt%), the use feeling was reduced, and particularly the sticky feeling was increased and the spreadability was remarkably reduced, in all of the feeling of fitting, the elasticity, the spreadability, the sticky feeling, the moisture feeling, and the gloss, as compared with the compositions of examples 1 to 3.

The present invention has been described by the preferred embodiments mentioned above, but various modifications and variations can be made without departing from the spirit and scope of the invention. Therefore, the appended claims contain such modifications or variations as fall within the true spirit of the invention.

Claims (10)

1. An oil-in-water skin care cosmetic composition comprising:

an oil phase component comprising an oil and an oil gelling agent; and

an aqueous phase component containing water and a carbomer tackifier.

2. The oil-in-water skin care cosmetic composition according to claim 1, wherein the mixing ratio of the oil phase component and the water phase component is 30:70 to 5:95 on a weight basis.

3. The oil-in-water type skin care cosmetic composition according to claim 1, wherein the oil is an ester oil, a silicone oil or a mixture thereof.

4. The oil-in-water type skin care cosmetic composition according to claim 1, wherein the oil is contained in an amount of 2 to 25 wt% based on the total weight of the composition.

5. The oil-in-water type skin care cosmetic composition according to claim 1, wherein the oil gelling agent is one or more selected from the group consisting of disteardimonium hectorite, ethylcellulose and dextrin palmitate.

6. The oil-in-water type skin care cosmetic composition according to claim 1, wherein the oil gelling agent is contained in an amount of 0.6 to 2% by weight based on the total weight of the composition

7. The oil-in-water skin care cosmetic composition according to claim 1, wherein the carbomer tackifier is present in an amount of 0.03 to 0.2% by weight based on the total weight of the composition.

8. The oil-in-water skin care cosmetic composition according to claim 1, wherein the mixing ratio of the carbomer tackifier to the oil gelling agent is 1:3 to 67 on a weight basis.

9. The oil-in-water type skin care cosmetic composition according to claim 1, which contains an ingredient having anti-aging activity as an active ingredient, and is formulated as an anti-aging functional cosmetic.

10. The oil-in-water type skin care cosmetic composition according to claim 1, which comprises an ingredient having skin texture improving activity as an active ingredient, and is formulated as a skin texture improving functional cosmetic.

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