W / o / w emulsion cosmetic composition and method for preparing the same

Abstract

The water-in-oil-in-water (W / O / W) emulsion cosmetic composition of the present application is mixed from an oil-in-water emulsion and a water-in-oil emulsion, and achieves excellent emulsion stability under various temperature conditions, while having excellent use feeling and moisturizing feeling, and excellent skin absorption of active ingredients.

Description

TECHNICAL FIELD

[0001] The present application relates to a water-in-oil-in-water (W / O / W) emulsion cosmetic composition. BACKGROUND

[0002] Generally used emulsified cosmetic compositions are mainly classified into an oil-in-water (O / W) emulsion cosmetic composition or a water-in-oil (W / O) emulsion cosmetic composition.

[0003] Taking the above-described O / W emulsion cosmetic composition as an example, the external phase thereof is water, and thus has the advantages of a thin use feeling and non-stickiness, and thus has high usability, but has the disadvantage of being easily removed by sweat or water. In contrast, the external phase of the above-described W / O emulsion cosmetic composition is oil, and thus has excellent moisturizing effects, and has an advantage over the O / W emulsion cosmetic composition in terms of sweat or water, but has the disadvantages of a thick use feeling and oiliness.

[0004] Accordingly, in recent years, the use of water-in-oil-in-water (W / O / W) emulsion cosmetic compositions, which have both the advantages of O / W emulsion cosmetic compositions and the advantages of W / O emulsion cosmetic compositions, is increasing. In particular, taking the W / O / W emulsion cosmetic composition as an example, it has a thin use feeling, non-stickiness, excellent moisturizing effects, and is capable of stably containing various active ingredients, and thus has high usability. For example, Korean Registered Patent No. 10-2018-0038641 discloses a W / O / W emulsion containing retinol.

[0005] On the other hand, compared to O / W emulsions or W / O emulsions, such multiple emulsion types are difficult to form into an emulsified form as such, and even if prepared in the form of a W / O / W emulsion, the emulsification stability is reduced with changes in time or temperature.

[0006] Accordingly, there is a need to develop a cosmetic composition, which is a W / O / W emulsion type cosmetic composition, is prepared in the form of a W / O / W emulsion and is capable of maintaining a stable emulsified state, and simultaneously improves the use feeling and the moisturizing feeling, which are the respective advantages of O / W emulsions and W / O emulsions.

[0007] PRIOR ART DOCUMENTS

[0008] PATENT DOCUMENTS

[0009] (Patent Document 1) Korean Registered Patent No. 10-2018-0038641 SUMMARY

[0010] TECHNICAL PROBLEM

[0011] A first object of the present application is to provide a W / O / W (water-in-oil-in-water) emulsion cosmetic composition including an oil-in-water emulsion and a water-in-oil emulsion, which has excellent emulsion stability under various temperature conditions, and has excellent use feeling and moisturizing feeling, while the skin absorption rate of an active ingredient is improved.

[0012] A second object of the present application is to provide a method for preparing a W / O / W emulsion cosmetic composition, which is a method for preparing a W / O / W emulsion cosmetic composition by preparing an oil-in-water emulsion and a water-in-oil emulsion, respectively, and then mixing the two emulsions, wherein the W / O / W emulsion cosmetic composition has excellent emulsion stability under various temperature conditions, and has excellent use feeling, moisturizing feeling, and skin absorption rate of an active ingredient.

[0013] The object of the present application is not limited to the technical problem as described above, and another technical problem can be derived through the following description.

[0014] Technical Solution

[0015] To achieve the above-described first object, the present application provides a W / O / W (water-in-oil-in-water) emulsion cosmetic composition including an oil-in-water emulsion and a water-in-oil emulsion, wherein the water-in-oil emulsion includes a W / O oil phase portion and a W / O water phase portion, the W / O oil phase portion includes a W / O emulsifier and a wax; the oil-in-water emulsion includes an O / W oil phase portion and an O / W water phase portion, the O / W oil phase portion includes an O / W emulsifier, a wax, and an oil, the O / W emulsifier includes at least one selected from the group consisting of a fatty acid ester emulsifier, a fatty acid, and a fatty alcohol, the O / W water phase portion includes a thickening agent and a polyol.

[0016] The W / O / W emulsion cosmetic composition can be emulsified by the oil-in-water emulsion and the water-in-oil emulsion.

[0017] The water-in-oil emulsion can include the W / O emulsifier and the wax at a weight ratio of 1:0.3 to 9.

[0018] The oil-in-water emulsion can include the thickening agent and the fatty acid ester emulsifier at a weight ratio of 1:5 to 29.

[0019] The oil-in-water emulsion can include the oil and the O / W emulsifier at a weight ratio of 1:0.4 to 2.5.

[0020] The W / O / W emulsion cosmetic composition can include the oil-in-water emulsion at 300 parts by weight to 2400 parts by weight, based on 100 parts by weight of the water-in-oil emulsion.

[0021] The water-in-oil emulsion can include 0.01 to 10 wt% of the W / O emulsifier and 0.01 to 10 wt% of the wax, based on the total weight of the water-in-oil emulsion.

[0022] The oil-in-water emulsion can include 0.1 to 28 wt% of the O / W emulsifier, 0.5 to 5 wt% of the wax, 0.5 to 40 wt% of the oil, 0.1 to 3 wt% of the thickening agent, and 20 to 40 wt% of the polyol, based on the total weight of the oil-in-water emulsion.

[0023] The W / O / W emulsion cosmetic composition can further include an active ingredient, and the active ingredient is included in the O / W aqueous phase part.

[0024] To achieve the above-described second object, the present application provides a method of preparing a W / O / W (water-in-oil-in-water) emulsion cosmetic composition, including: preparing a water-in-oil emulsion including a W / O oil phase part and a W / O aqueous phase part, the W / O oil phase part including a W / O emulsifier and a wax; preparing an oil-in-water emulsion including an O / W oil phase part and an O / W aqueous phase part, the O / W oil phase part including an O / W emulsifier, a wax, and an oil, the O / W emulsifier including at least one selected from the group consisting of fatty acid ester emulsifiers, fatty acids, and fatty alcohols, the O / W aqueous phase part including a thickening agent and a polyol; and putting the water-in-oil emulsion into the oil-in-water emulsion and stirring, thereby preparing a W / O / W emulsion cosmetic composition.

[0025] Advantageous effects

[0026] The W / O / W emulsion cosmetic composition of the present application is prepared by mixing an oil-in-water emulsion and a water-in-oil emulsion, and thus can achieve excellent emulsion stability even under various temperature conditions, and has excellent use feeling and moisturizing feeling. In particular, the W / O / W emulsion cosmetic composition of the present application is formed with a proper degree of hardness, and thus can achieve more excellent emulsion stability, use feeling, and moisturizing feeling. In addition, the W / O / W emulsion cosmetic composition of the present application can have improved transdermal absorption rate by including an active ingredient in the outermost aqueous phase.

[0027] In addition, the method of preparing the W / O / W emulsion cosmetic composition according to the present application can provide a W / O / W emulsion cosmetic composition, which is prepared by preparing an oil-in-water emulsion and a water-in-oil emulsion separately and mixing the two emulsions, thus forming with a proper degree of hardness, achieving excellent emulsion stability under various temperature conditions, and having excellent use feeling and moisturizing feeling and improved skin absorption of active ingredients. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 FIG. 1 is a graph showing a microscope image of Composition 3.

[0029] Figure 2 FIG. 3 is a graph showing a microscope image of Composition 7.

[0030] Figure 3 FIG. 5 is a graph showing a microscope image of Composition 8. DETAILED DESCRIPTION

[0031] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings so as to be able to easily carry out by a person skilled in the art. However, the present application can be implemented in various different forms and is not limited to the embodiments described in this specification. In addition, in order to accurately describe the present application in the accompanying drawings, parts irrelevant to the description will be omitted.

[0032] The terms or words used in the specification and claims of this application should not be construed as limited to the commonly used meanings and should be interpreted based on the concept and the principles of the present application in its most suitable form based on the principle that the inventor can properly define the terms to describe the present application in the most preferred way.

[0033] Throughout the specification, when it is referred to that one part "comprises" a constituent element, it means that other constituent elements can be further included, rather than excluding other constituent elements, unless otherwise explicitly stated.

[0034] Throughout the specification, "A and / or B" means A or B, or A and B.

[0035] Hereinafter, the present application will be described in detail, but the present application is not limited thereto.

[0036] The present application provides a W / O / W emulsion cosmetic composition.

[0037] An embodiment of the present application provides a W / O / W (water-in-oil-in-water) emulsion cosmetic composition, which is formed by mixing and emulsifying an oil-in-water emulsion and a water-in-oil emulsion, wherein the water-in-oil emulsion includes a W / O oil phase portion including a W / O emulsifier and a wax, and a W / O water phase portion, and the oil-in-water emulsion includes an O / W oil phase portion including an O / W emulsifier including at least one selected from the group consisting of fatty acid ester emulsifiers, fatty acids, and fatty alcohols, a wax, and an oil, and an O / W water phase portion including a thickening agent and a polyol.

[0038] The present embodiment can more easily form a W / O / W emulsion cosmetic composition in a stable state by mixing and emulsifying an oil-in-water emulsion and a water-in-oil emulsion, which are stabilized, respectively. In particular, the prior art prepares a W / O / W emulsion cosmetic composition by mixing a water-in-oil emulsion and a water phase ingredient, whereas according to the present embodiment, the preparation can be easier and the stability is further improved than the prior art.

[0039] The W / O / W emulsion cosmetic composition of the present embodiment can stably maintain a W / O / W emulsion state under various temperature change conditions by achieving excellent emulsion stability at low temperature, normal temperature, high temperature, and cyclic temperature conditions. In addition, the W / O / W emulsion cosmetic composition of the present embodiment can have excellent use feeling and moisturizing feeling. In particular, the W / O / W emulsion cosmetic composition of the present embodiment is formed with a proper degree of hardness, and thus can achieve more excellent emulsion stability, use feeling, and moisturizing feeling.

[0040] In addition, the W / O / W emulsion cosmetic of the present embodiment can achieve improved transdermal absorption rate by including an active ingredient in the outermost water phase, and thus achieve an excellent skin improvement effect. At this time, the outermost water phase can mean the O / W water phase portion.

[0041] The active ingredient is not particularly limited as long as it is an ingredient capable of achieving a skin improvement effect. For example, the active ingredient can include niacinamide, a balsa extract, arbutin, ethyl ascorbic acid ether, ascorbic acid glucoside, magnesium ascorbyl phosphate, and ascorbyl tetraisopalmitate, but is not limited thereto, and can include a known ingredient having a skin improvement effect.

[0042] Hereinafter, the water-in-oil emulsion component of the W / O / W emulsion cosmetic composition constituting the present embodiment will be described in detail.

[0043] (1) Water-in-oil emulsion: W / O emulsifier

[0044] The water-in-oil emulsion of the present embodiment can include a W / O emulsifier, which can include all known W / O emulsifier ingredients. For example, the W / O emulsifier can include at least one selected from the group consisting of Cetyl PEG / PPG-10 / 1 Dimethicone, Sorbitan Sesquioleate, Polyglyceryl-4 diisostearate / polyhydroxystearate / sebacate, and Lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone, but is not limited thereto.

[0045] The water-in-oil emulsion of the present embodiment can include 0.01 to 10% by weight of the W / O emulsifier, specifically 0.04 to 7% by weight, and more specifically 1 to 7% by weight, based on the total weight of the water-in-oil emulsion. In particular, when the water-in-oil emulsion of the present embodiment includes 1 to 7% by weight of the W / O emulsifier, the emulsion stability, the use feeling, the moisturizing feeling, and the skin absorption rate of the W / O / W emulsion cosmetic composition according to the present embodiment can be further improved, based on the total weight of the water-in-oil emulsion.

[0046] When the water-in-oil emulsion of the present embodiment includes less than 0.01% by weight of the W / O emulsifier, based on the total weight of the water-in-oil emulsion, the emulsification itself cannot be properly performed, and thus it is difficult to form the water-in-oil emulsion. In contrast, when the water-in-oil emulsion of the present embodiment includes more than 10% by weight of the W / O emulsifier, based on the total weight of the water-in-oil emulsion, the emulsion stability, the use feeling, the moisturizing feeling, and the skin absorption rate can be possibly decreased, compared to when 0.01 to 10% by weight of the W / O emulsifier is included.

[0047] (2) Water-in-oil emulsion: wax

[0048] The water-in-oil emulsion of the present embodiment can include a wax, which can include all known wax ingredients. For example, the wax can include at least one selected from the group consisting of glyceryl behenate / eicosadioate, beeswax, jojoba seed wax, microcrystalline wax, shea butter, ceresin wax, paraffin wax, polyethylene wax, ozocerite, petrolatum, and Candelilla Wax. Specifically, the wax can include at least one selected from the group consisting of beeswax and Candelilla Wax, but is not limited thereto.

[0049] The water-in-oil emulsion of the present embodiment can include 0.01 to 10% by weight of the wax, specifically 1 to 9% by weight, and more specifically 3 to 8.5% by weight, based on the total weight of the water-in-oil emulsion. In particular, when the water-in-oil emulsion of the present embodiment includes 3 to 8.5% by weight of the wax, the emulsion stability, the use feeling, the moisturizing feeling, and the skin absorption rate of the W / O / W emulsion cosmetic composition according to the present embodiment can be further improved, based on the total weight of the water-in-oil emulsion.

[0050] When the water-in-oil emulsion of the present embodiment includes less than 0.01% by weight of the wax, based on the total weight of the water-in-oil emulsion, a proper degree of hardness cannot be formed, and thus the density difference between the water-in-oil emulsion and the oil-in-water emulsion is enlarged, thereby causing a problem of separation in the final dosage form. In contrast, when the water-in-oil emulsion of the present embodiment includes more than 10% by weight of the wax, based on the total weight of the water-in-oil emulsion, the emulsion stability, the use feeling, the moisturizing feeling, and the skin absorption rate can be decreased, compared to when the water-in-oil emulsion includes 0.01 to 10% by weight of the wax.

[0051] The water-in-oil emulsion of the present embodiment can include the W / O emulsifier and the wax, and can include the W / O emulsifier and the wax at a weight ratio of 1:0.3 to 9, in which case improved emulsion stability, use feeling, and moisturizing feeling can be achieved.

[0052] Specifically, the water-in-oil emulsion of the present embodiment can include the W / O emulsifier and the wax, and can include the W / O emulsifier and the wax at a weight ratio of 1:0.5 to 7, in which case significantly improved emulsion stability, use feeling, and moisturizing feeling can be achieved.

[0053] In addition, the water-in-oil emulsion of the present embodiment can further include known excipients or additives, in addition to the W / O emulsifier and the wax and the remaining water.

[0054] For example, the excipient or additive can include at least one selected from the group consisting of surfactants, emulsifiers, emulsification aids, silicone polymers, pigments, colorants, fragrances, preservatives, bactericides, oxidation stabilizers, organic solvents, emollients, antioxidants, radical scavengers, sunscreens, stabilizers, emollients, antifoaming agents, humectants, vitamins, repellents, preservatives, anti-inflammatory agents, fillers, polymers, propellants, basifying agents, acidifying agents, colorants, thickening agents, skin conditioners, whitening agents, antioxidants, wrinkle improvement agents, and solubilizers, but is not limited thereto.

[0055] In addition, the oil-in-water emulsion component constituting the W / O / W emulsion cosmetic composition of the present embodiment will be described in detail below.

[0056] (3) Oil-in-water emulsion: O / W emulsifier

[0057] The oil-in-water emulsion of the present embodiment includes an O / W emulsifier including at least one selected from the group consisting of fatty acid ester emulsifiers, fatty acids, and fatty alcohols.

[0058] Specifically, the oil-in-water emulsion of the present embodiment can include an O / W emulsifier, and the O / W emulsifier includes a fatty acid ester emulsifier, a fatty acid, and a fatty alcohol, and when the oil-in-water emulsion includes all of the fatty acid ester emulsifier, the fatty acid, and the fatty alcohol, the emulsion stability, the use feeling, the moisturizing feeling, and the skin absorption rate of the W / O / W emulsion cosmetic composition according to the present embodiment can be further improved.

[0059] The fatty acid ester emulsifier can include all known fatty acid ester ingredients. For example, the fatty acid ester emulsifier can include at least one selected from the group consisting of PEG-100 stearate (PEG-100 Stearate), PEG-40 stearate (PEG-40 Stearate), glyceryl stearate, steareth-2, steareth-6, steareth-10, and steareth-21, but is not limited thereto.

[0060] The fatty acid can include all known fatty acid ingredients. For example, the fatty acid can include at least one selected from the group consisting of palmitic acid, myristic acid, and stearic acid, but is not limited thereto.

[0061] The fatty alcohol can include all known fatty alcohol ingredients. For example, the fatty alcohol can include at least one selected from the group consisting of cetyl alcohol, behenyl alcohol, stearyl alcohol, and oleyl alcohol, but is not limited thereto.

[0062] The O / W emulsifier can be included in an amount of 0.1 to 28% by weight, specifically 1 to 25% by weight, and more specifically 5 to 23% by weight, based on the total weight of the oil-in-water emulsion of the present embodiment. Particularly, when the oil-in-water emulsion of the present embodiment includes 5 to 23% by weight of the O / W emulsifier, the emulsion stability, the use feeling, the moisturizing feeling, and the skin absorption rate of the W / O / W emulsion cosmetic composition according to the present embodiment can be further improved.

[0063] When the oil-in-water emulsion of the present embodiment includes less than 0.1% by weight of the O / W emulsifier, emulsification itself cannot be properly performed, and thus it is difficult to form an emulsion. In contrast, when the oil-in-water emulsion of the present embodiment includes more than 28% by weight of the O / W emulsifier, the emulsion stability, the use feeling, the moisturizing feeling, and the skin absorption rate can be decreased compared to when the O / W emulsifier is included in an amount of 0.1 to 28% by weight.

[0064] (4) Oil-in-water emulsion: wax

[0065] The oil-in-water emulsion of the present embodiment can include a wax, which can include all known wax ingredients. For example, the wax can include at least one selected from the group consisting of glyceryl behenate / eicosadioate, beeswax, jojoba seed wax, microcrystalline wax, shea butter, ceresin wax, paraffin wax, polyethylene wax, ozocerite, petrolatum, and Candelilla Wax. Specifically, the wax can include at least one selected from the group consisting of beeswax and Candelilla Wax, but is not limited thereto.

[0066] The W / O emulsion of the present embodiment can include 0.5 to 5% by weight of the wax based on the total weight of the W / O emulsion, specifically, 1 to 4% by weight, and more specifically, 1.5 to 3% by weight. In particular, when the W / O emulsion of the present embodiment includes 1.5 to 3% by weight of the wax based on the total weight of the W / O emulsion, the emulsion stability, the use feeling, the moisturizing feeling, and the skin absorption rate of the W / O / W emulsion cosmetic composition according to the present embodiment can be further improved.

[0067] When the W / O emulsion of the present embodiment includes less than 0.5% by weight of the wax based on the total weight of the W / O emulsion, the hardness is not formed to an appropriate degree, and thus the density difference between the W / O emulsion and the W / O emulsion is enlarged, which can cause a problem of separation in the final dosage form. In contrast, when the W / O emulsion of the present embodiment includes more than 5% by weight of the wax based on the total weight of the W / O emulsion, the emulsion stability, the use feeling, the moisturizing feeling, and the skin absorption rate can be decreased compared to when the W / O emulsion includes 0.5 to 5% by weight of the wax.

[0068] (5) Oil-in-water emulsion: oil

[0069] The W / O emulsion of the present embodiment can include an oil, which can include all known oil ingredients. Specifically, the oil can include at least one selected from the group consisting of a plant oil, a synthetic oil, and a silicone oil.

[0070] For example, the plant oil can include at least one selected from the group consisting of rapeseed oil, castor oil, corn oil, cottonseed oil, evening primrose oil, palm kernel oil, chlorinated soybean oil, phospholipid oil, rosehip oil, green tea seed oil, macadamia nut seed oil, citrus seed extract, and Squalan.

[0071] The synthetic oil can include at least one selected from the group consisting of ester oil, siloxane, dibutyl adipate, C 15 -C 19 alkane, hydrogenated polydecene, Hydrogenated polyisobutene, C 15 -C 19at least one selected from the group consisting of alkane, hexyldecanol / hexyldecyl laurate, cetearyl octanoate, isocetyl stearate, dicaprylyl ether, dicaprylyl carbonate, isononyl isononanoate, dipentaerythrityl tri-polyhydroxystearate, and pentaerythrityl tetraethylhexanoate.

[0072] The silicone oil can include at least one selected from the group consisting of dimethicone, caprylyl methicone, ethyl methicone, phenylprop ethyl methicone, phenyltrimethicone, and decamethylcyclopentasiloxane.

[0073] The oil-in-water emulsion of the present embodiment can include 0.5 to 40% by weight of oil, specifically 1 to 30% by weight, and more specifically 10 to 30% by weight, based on the total weight of the oil-in-water emulsion. In particular, when the oil-in-water emulsion of the present embodiment includes 10 to 30% by weight of oil, based on the total weight of the oil-in-water emulsion, the emulsion stability, the use feeling, the moisturizing feeling, and the skin absorption rate of the W / O / W emulsion cosmetic composition according to the present embodiment can be further improved.

[0074] When the oil-in-water emulsion of the present embodiment includes less than 0.5% by weight of oil, based on the total weight of the oil-in-water emulsion, the oil-in-water emulsion cannot be normally formed, and thus it is difficult to form a W / O / W emulsion. In contrast, when the oil-in-water emulsion of the present embodiment includes more than 40% by weight of oil, based on the total weight of the oil-in-water emulsion, the emulsification itself cannot be normally performed, and thus it is difficult to form an emulsion.

[0075] The oil-in-water emulsion of the present embodiment can include the oil and the O / W emulsifier, and can include the oil and the O / W emulsifier at a weight ratio of 1:0.4 to 2.5. In this case, the W / O / W emulsion cosmetic composition of the present embodiment is formed with a hardness of an appropriate degree, while being able to achieve more excellent emulsion stability, use feeling, and moisturizing feeling.

[0076] Specifically, the oil-in-water emulsion of the present embodiment can include the oil and the O / W emulsifier at a weight ratio of 1:0.5 to 1.5. In this case, the W / O / W emulsion cosmetic composition of the present embodiment is formed with a hardness of an appropriate degree, while being able to achieve significantly excellent emulsion stability, use feeling, and moisturizing feeling.

[0077] (6) Oil-in-water emulsion: thickening agent

[0078] The oil-in-water emulsion of the present embodiment can include a thickening agent, and the thickening agent can include a polyacrylate-based thickening agent.

[0079] Specifically, the polyacrylate-based thickening agent can include polyacrylate-13. In particular, the W / O / W emulsion cosmetic composition of the present embodiment can achieve further improved emulsion stability, use feeling, and moisturizing feeling due to the inclusion of polyacrylate-13 as the polyacrylate-based thickening agent.

[0080] The oil-in-water emulsion of the present embodiment can include 0.1% by weight to 3% by weight of the thickening agent, specifically 0.4% by weight to 2% by weight, and more specifically 0.5% by weight to 1% by weight, based on the total weight of the oil-in-water emulsion. In particular, when the oil-in-water emulsion of the present embodiment includes 0.5% by weight to 1% by weight of the thickening agent based on the total weight, the emulsion stability, use feeling, moisturizing feeling, and skin absorption rate of the W / O / W emulsion cosmetic composition according to the present embodiment can be further improved.

[0081] When the oil-in-water emulsion of the present embodiment includes less than 0.1% by weight of the thickening agent based on the total weight of the oil-in-water emulsion, the emulsion stability, use feeling, and moisturizing feeling can be decreased compared to when 0.1% by weight to 3% by weight of the thickening agent is included. In contrast, when the oil-in-water emulsion of the present embodiment includes more than 3% by weight of the thickening agent based on the total weight of the oil-in-water emulsion, emulsification itself cannot be properly performed or coagulation occurs, and thus it is difficult to form an emulsion.

[0082] The oil-in-water emulsion of the present embodiment can include the thickening agent and the fatty acid ester emulsifier, and can include 1:5 to 29 weight ratio of the thickening agent and the fatty acid ester emulsifier. In this case, the W / O / W emulsion cosmetic composition of the present embodiment is formed with a proper degree of hardness, while being able to achieve more excellent emulsion stability, use feeling, and moisturizing feeling.

[0083] Specifically, the oil-in-water emulsion of the present embodiment can include the thickening agent and the fatty acid ester emulsifier, and can include 1:8 to 20 weight ratio of the thickening agent and the fatty acid ester emulsifier. In this case, the W / O / W emulsion cosmetic composition of the present embodiment is formed with a proper degree of hardness, while being able to achieve significantly excellent emulsion stability, use feeling, and moisturizing feeling.

[0084] (7) Oil-in-water emulsion: polyol

[0085] The oil-in-water emulsion of the present embodiment can include a polyol, which can include all known polyol ingredients.

[0086] For example, the polyol can include at least one selected from the group consisting of glycerin, butylene glycol, 1,3-propanediol, methylpropanediol, and polyglyceryl-3, but is not limited thereto.

[0087] The oil-in-water emulsion of the present embodiment can include 20 to 40 weight% of the polyol based on the total weight of the oil-in-water emulsion, specifically can include 22 to 35 weight%, and more specifically can include 25 to 30 weight%. In particular, when the oil-in-water emulsion of the present embodiment includes 25 to 30 weight% of the polyol based on the total weight, the emulsion stability, use feeling, moisturizing feeling, and skin absorption rate of the W / O / W emulsion cosmetic composition of the present embodiment can be further improved.

[0088] When the oil-in-water emulsion of the present embodiment includes less than 20 weight% of the polyol based on the total weight of the oil-in-water emulsion, the emulsion stability, use feeling, and moisturizing feeling can be likely to decrease compared to when 20 to 40 weight% of the polyol is included. In contrast, when the oil-in-water emulsion of the present embodiment includes more than 40 weight% of the polyol based on the total weight of the oil-in-water emulsion, emulsification itself cannot be properly performed or coagulation occurs, and thus it is difficult to form an emulsion.

[0089] In addition, the oil-in-water emulsion of the present embodiment can further include a nonionic surfactant. Specifically, the oil-in-water emulsion of the present embodiment can further include the nonionic surfactant in the O / W aqueous phase portion.

[0090] For example, the nonionic surfactant can include at least one selected from the group consisting of PEG-40 Hydrogenated Castor Oil, Polyoxyl hydrogenated castor oil, PEG-25 Cetyl / Stearyl Ether, but is not limited thereto.

[0091] The W / O emulsion of the present embodiment can include 2 to 20% by weight of the nonionic surfactant, specifically 3 to 10% by weight, and more specifically 4 to 8% by weight, based on the total weight of the W / O emulsion. Particularly, when the W / O emulsion of the present embodiment further includes the nonionic surfactant and includes 4 to 8% by weight of the nonionic surfactant, the emulsion stability, the use feeling, the moisturizing feeling, and the skin absorption rate of the W / O / W emulsion cosmetic composition of the present embodiment can be further improved.

[0092] In addition, the W / O emulsion of the present embodiment can further include a known excipient or additive, in addition to the O / W emulsifier, the wax, the oil, the thickening agent, the polyol, and the remaining purified water.

[0093] For example, the excipient or additive can include at least one selected from the group consisting of a surfactant, an emulsifier, an emulsification aid, a silicone polymer, a pigment, a colorant, a fragrance, a preservative, a bactericide, an oxidation stabilizer, an organic solvent, an emollient, an antioxidant, a radical scavenger, a sunscreen, a stabilizer, an emollient, an antifoaming agent, a moisturizer, a vitamin, an insect repellent, a preservative, an anti-inflammatory agent, a filler, a polymer, a propellant, an alkalizing agent, an acidifying agent, a coloring agent, a thickening agent, a skin conditioner, a whitening agent, an antioxidant, a wrinkle improvement agent, and a solubilizer, but is not limited thereto.

[0094] The W / O / W emulsion cosmetic composition of the present embodiment can include 300 to 2400 parts by weight of the W / O emulsion, specifically 300 to 1900 parts by weight, based on 100 parts by weight of the W / O emulsion. Particularly, when the W / O / W emulsion cosmetic composition of the present embodiment includes 300 to 1900 parts by weight of the W / O emulsion based on 100 parts by weight of the W / O emulsion, the W / O / W emulsion cosmetic composition of the present embodiment can achieve more excellent emulsion stability, use feeling, and moisturizing feeling.

[0095] When the W / O / W emulsion cosmetic composition of the present embodiment includes less than 300 parts by weight or more than 2400 parts by weight of the oil-in-water emulsion based on 100 parts by weight of the water-in-oil emulsion, it can be difficult to form the W / O / W emulsion itself, or even if the W / O / W emulsion is formed, the stability according to temperature can be reduced.

[0096] The hardness of the W / O / W emulsion cosmetic composition of the present embodiment can be 200 to 500, and specifically, 250 to 450. In particular, the hardness of the W / O / W emulsion cosmetic composition of the present embodiment is formed to an appropriate degree of 200 to 500, and thus excellent use feeling, moisturizing feeling, and formulation stability can be achieved.

[0097] In addition, the present application provides a method of preparing a W / O / W emulsion cosmetic composition.

[0098] Another embodiment of the present application provides a method of preparing a W / O / W (water-in-oil-in-water) emulsion cosmetic composition, including: preparing a water-in-oil emulsion including a W / O oil phase portion and a W / O water phase portion, the W / O oil phase portion including a W / O emulsifier and a wax; preparing an oil-in-water emulsion including an O / W oil phase portion and an O / W water phase portion, the O / W oil phase portion including an O / W emulsifier, a wax, and an oil, the O / W emulsifier including at least one selected from the group consisting of a fatty acid ester emulsifier, a fatty acid, and a fatty alcohol, the O / W water phase portion including a thickening agent and a polyol; and preparing a W / O / W emulsion cosmetic composition by putting the water-in-oil emulsion into the oil-in-water emulsion and stirring.

[0099] According to the method of preparing a W / O / W emulsion cosmetic composition according to the present embodiment, it is possible to prepare a W / O / W emulsion cosmetic composition that is formed to an appropriate degree of hardness and has excellent emulsion stability under various temperature conditions, and use feeling and moisturizing feeling are improved.

[0100] Specifically, in the step of preparing a water-in-oil emulsion, by heating the W / O oil phase portion including the W / O emulsifier and the wax and the W / O water phase portion including purified water to 75 to 85°C, respectively, and then slowly putting the W / O water phase portion into the W / O oil phase portion, stirring, and cooling, a W / O emulsion can be prepared.

[0101] In addition, in the step of preparing the O / W emulsion, the O / W emulsion can be prepared by slowly putting the O / W oil phase part including the O / W emulsifier, the wax, and the oil and the O / W water phase part including the polyol and the remaining purified water, each heated to 75 to 85°C, into the O / W water phase part while stirring and cooling, and then putting the thickening agent and stirring.

[0102] In addition, in the step of preparing the W / O / W emulsion cosmetic composition, the W / O / W emulsion cosmetic composition can be prepared by slowly putting the water-in-oil emulsion formed as described above into the oil-in-water emulsion formed as described above while stirring, and then cooling and defoaming.

[0103] At this time, stirring can be performed in each step, for example, the stirring can be performed at 3000 to 4000 rpm using a HOMO for about 5 to 15 minutes, but is not limited thereto.

[0104] Hereinafter, the W / O / W emulsion cosmetic composition and the method of preparing the same according to the present application will be described in detail through examples, comparative examples, and experimental examples. The examples are only for illustratively describing the present application, and thus the scope of the present application should not be construed as being limited thereto.

[0105] Experimental Example

[0106] Experimental Example 1: Evaluation of W / O emulsion properties according to W / O emulsifier and wax ratio

[0107] (1) Preparation of W / O emulsion

[0108] The W / O oil phase part and the W / O water phase part shown in Table 1 [unit: wt%] were heated to 80°C, and then the W / O water phase part was slowly put into the W / O oil phase part, followed by stirring at 3500 rpm using a HOMO for about 10 minutes, and cooling to about 40°C at 25 rpm using a PADDLE.

[0109] At this time, in Preparation Examples 1 to 5, the total amount of the W / O emulsifier and the wax was also maintained at 9.6 wt%, and the water-in-oil emulsion was prepared by changing the ratio of the two components as shown in Table 2 [unit: wt%].

[0110] Table 1

[0111]

[0112] At this time, the W / O emulsifier of Table 1 includes Cetyl PEG / PPG-10 / Dimethicone, the wax includes beeswax, and the oil includes Hydrogenated Polydecene.

[0113] Table 2

[0114] Preparation Example 1 Preparation Example 2 Preparation Example 3 Preparation Example 4 Preparation Example 5 W / O emulsifier 1 1 1 1 1 Wax 0.1 0.5 7 10 15

[0115] (2) Evaluation of properties of W / O emulsion

[0116] The emulsification degree, hardness, use feeling, and moisturizing feeling of the W / O emulsions according to Preparation Examples 1 to 5 prepared as described above were evaluated, and the results thereof are shown in Table 3.

[0117] Specifically, the emulsification state was observed with the naked eye, and when a stable emulsification state was formed, it was marked as "stable", and when phenomena such as delamination, precipitation, aggregation, or dehydration occurred, it was marked as "unstable". At this time, the emulsification state was an emulsification state observed for about 1 week to 5 weeks, and the cycle means sequentially performing the following processes, maintaining -20°C for 6 hours, heating to 20°C for 6 hours, maintaining 20°C for 6 hours, cooling to -20°C for 6 hours.

[0118] In addition, the hardness was detected using a FUDOH RHEO METER (D TYPE) of RHEO TECH CO, LTD. Specifically, the hardness was detected after the sample for evaluating the emulsion stability was stored at room temperature for 24 hours, the PIN specification for detection was 20 mm PI PIN, the detection depth was DEPTH 15 mm, and the moving speed required for detection was set to detect the PEAK value at 30 cm / s.

[0119] In addition, the use feeling and moisturizing feeling were evaluated by the following method, 1 mg / cm 2 The sample (W / O emulsion) was applied to the inner arm of each of twenty test subjects consisting of women in their 20s to 40s in the width of 3 cm and the length of 2 cm according to the usual makeup habits, and then they evaluated the use feeling and moisturizing feeling on a scale of 1 minute to 10 minutes. Then, the scores of the twenty were added to obtain the average value, and then the value excluding the bias value was shown in Table 3, and the closer to 10 minutes meant that the use feeling and moisturizing feeling were excellent.

[0120] Table 3

[0121]

[0122] Referring to Table 3, it can be seen that in the components constituting the water-in-oil emulsion, Preparation Example 2 and Preparation Example 3 including the W / O emulsifier and the wax in a weight ratio of 1:0.3 to 9 maintained a stable emulsification state and had excellent use feeling and moisturizing feeling under all conditions, i.e., low temperature, room temperature, high temperature, and cycling.

[0123] In addition, it can be seen that the hardness of Preparation Example 2 and Preparation Example 3 was formed to an appropriate degree of 100 to 300.

[0124] On the contrary, it can be seen that Preparation Example 1 is unstable and has a significantly lower hardness under all conditions, i.e., low temperature, normal temperature, high temperature, and cycling, and thus is not suitable for preparing a W / O / W emulsion cosmetic composition.

[0125] In addition, it can be seen that Preparation Example 4 is delaminated, and thus cannot maintain a stable emulsified state under high temperature and cycling conditions, and both the use feeling and the moisturizing feeling are reduced. It can be seen that Preparation Example 5 is dehydrated, and thus the emulsified state is unstable under all conditions, i.e., low temperature, normal temperature, high temperature, and cycling, and both the use feeling and the moisturizing feeling are reduced. In particular, the hardness of Preparation Examples 4 to 5 is formed to be greater than or equal to 400, and thus the W / O emulsion itself is formed to be too hard, and thus is not suitable for preparing a W / O / W emulsion cosmetic composition.

[0126] It can be confirmed through the Experimental Example 1 that, when the W / O emulsifier and the wax are included in the W / O emulsion at a weight ratio of 1:0.3 to 9, the degree of emulsion stability, the moisturizing feeling, and the use feeling are excellent, and a W / O emulsion having an appropriate hardness can be formed.

[0127] Thus, the following cosmetic composition was prepared using the W / O emulsion of Preparation Example 2 in which the W / O emulsifier and the wax were included in the W / O emulsion at a weight ratio of 1:0.3 to 9, and the properties thereof were evaluated.

[0128] Experimental Example 2: Evaluation of properties of cosmetic compositions according to the mixing ratio of fatty acid ester emulsifier and thickening agent in O / W emulsion

[0129] (1) Preparation of O / W emulsion

[0130] After the oil phase and the water phase shown in Table 4 [unit: wt%] were heated to 80°C, respectively, the oil phase was slowly put into the water phase, and then stirred at HOMO 3500 rpm for about 5 minutes. Then, it was cooled to about 60°C under the condition of PADDLE 25 rpm, and finally the thickening agent was put in and stirred at HOMO 3500 rpm for about 5 minutes, thereby preparing an O / W emulsion.

[0131] Table 4

[0132]

[0133]

[0134] At this time, the fatty acid ester emulsifier in Table 4 includes PEG-100 stearate, the fatty acids include 0.298 wt% of palmitic acid, 0.242 wt% of myristic acid, and 0.003 wt% (0.54 wt% in total) of stearic acid, and the fatty alcohol includes cetyl alcohol.

[0135] In addition, the wax in Table 4 includes beeswax, the oil includes squalane, and the thickening agent includes polyacrylate-13.

[0136] While the total amount of the fatty acid ester emulsifier and the thickening agent in Table 4 was maintained at 10.44% by weight, the ratio of the two components was changed as shown in Table 5 below, and a cosmetic composition was prepared.

[0137] At this time, the weight ratio of the fatty acid ester emulsifier and the thickening agent of Preparation Example 6 is shown together in Table 5.

[0138] Table 5

[0139]

[0140] (2) Preparation of cosmetic composition

[0141] Then, the W / O emulsion of Preparation Example 2 was slowly put into each of the O / W emulsions as shown in Table 6, and after stirring at HOMO 3500 rpm for about 10 minutes, cooling was performed to about 40°C under PADDLE 25 rpm and defoaming was performed, thereby preparing a W / O / W emulsion cosmetic composition.

[0142] At this time, a W / O / W emulsion cosmetic composition was prepared by mixing 700 parts by weight of the O / W emulsion based on 100 parts by weight of the W / O emulsion.

[0143] Table 6

[0144] Composition 1 Composition 2 Composition 3 Composition 4 Composition 5 W / O emulsifier Preparation Example 2 Preparation Example 2 Preparation Example 2 Preparation Example 2 Preparation Example 2 O / W emulsifier Preparation Example 6 Preparation Example 7 Preparation Example 8 Preparation Example 9 Preparation Example 10 Composition 6 Composition 7 Composition 8 Composition 9 W / O emulsifier Preparation Example 2 Preparation Example 2 Preparation Example 2 Preparation Example 2 O / W emulsifier Preparation Example 11 Preparation Example 12 Preparation Example 13 Preparation Example 14

[0145] (3) Evaluation of properties of cosmetic composition

[0146] The cosmetic compositions of Composition 1 to Composition 9 were evaluated for performance in the same manner as in Experimental Example 1, and the results are shown in Table 7.

[0147] In addition, the microscope images of Composition 3, Composition 7, and Composition 8 at room temperature (25°C) are shown in Figure 1 to Figure 3 At this time, the microscope images were photographed using OLYMPUS DP74, BX51 (using a 100X objective lens) in a clean room at 25°C.

[0148] Table 7

[0149]

[0150] Referring to Table 7 and Figure 1It can be seen that according to the present embodiment, in the ingredients constituting the oil-in-water emulsion, Composition 1 to Composition 4 including a combination of a thickening agent and a fatty acid ester emulsifier at a weight ratio of 1 : 5 to 29 are included, and a W / O / W emulsion is formed by emulsification of a W / O emulsion and an O / W emulsion, thus achieving a stable emulsified state under various temperature conditions. In addition, it can be confirmed that the use feeling and moisturizing feeling of Composition 1 to Composition 4 according to the present embodiment are very excellent.

[0151] On the contrary, it can be seen that without according to the present embodiment, Composition 5 to Composition 9 including a combination of a thickening agent and a fatty acid ester emulsifier at a weight ratio of 1 : 5 to 29 are not included in the ingredients constituting the oil-in-water emulsion, and the emulsified state is not stable and the use feeling and moisturizing feeling are reduced. In particular, with reference to Figure 2 to Figure 3 , it can be seen that a stable emulsified form cannot be achieved due to the occurrence of more coagulation.

[0152] That is, it can be seen from the above that, when a W / O / W emulsion cosmetic composition is prepared by emulsifying a W / O emulsion and an O / W emulsion, by including a thickening agent and a fatty acid ester emulsifier at a weight ratio of 1 : 5 to 29 in the O / W emulsion, a W / O / W emulsion cosmetic composition having excellent emulsion stability under various temperature conditions and excellent use feeling and moisturizing feeling can be provided.

[0153] Experimental Example 3: Evaluation of the properties of cosmetic compositions according to the O / W emulsifier and oil mixing ratio in the O / W emulsion

[0154] (1) Preparation of O / W emulsion

[0155] After heating the oil phase and the water phase shown in Table 8 [unit: wt%] to 80°C, respectively, the oil phase was slowly put into the water phase, and then stirred at HOMO 3500 rpm for about 5 minutes. Then, it was cooled to about 60°C under PADDLE 25 rpm, and finally the thickening agent was put in and stirred at HOMO 3500 rpm for about 5 minutes, thereby preparing an O / W emulsion.

[0156] Table 8

[0157]

[0158]

[0159] The ratio of the two ingredients was changed while keeping the total amount of the O / W emulsifier (all) and the oil in Table 8 [unit: wt%] at 40.11 wt%, thereby preparing each of the preparation examples, and the weight ratio of the O / W emulsifier and the oil in the preparation examples is shown in Table 9 [unit: weight ratio].

[0160] Table 9

[0161] Preparation Example 6 Preparation Example 15 Preparation Example 16 Preparation Example 17 Preparation Example 18 O / W emulsifier 0.5 1 1.5 0.313 3 Oil 1 1 1 1 1

[0162] (2) Preparation of cosmetic composition

[0163] Then, as shown in Table 10, the W / O emulsion of Preparation Example 2 was slowly put into each of the O / W emulsions, and after stirring at HOMO 3500 rpm for about 10 minutes, cooled to about 40°C under PADDLE 25 rpm and defoamed, thereby preparing a W / O / W emulsion cosmetic composition.

[0164] At this time, by mixing 700 parts by weight of the O / W emulsion based on 100 parts by weight of the W / O emulsion, a W / O / W emulsion cosmetic composition was prepared.

[0165] Table 10

[0166]

[0167] (3) Evaluation of properties of cosmetic composition

[0168] The cosmetic compositions of Composition 10 to Composition 13 were evaluated for performance in the same manner as in Experimental Example 1, and the results thereof are shown in Table 11. At this time, since Composition 1 was the same as in Experimental Example 2, experiments were not additionally performed, and the results of Table 7 were also shown.

[0169] Table 11

[0170]

[0171] As can be seen with reference to Table 11, according to the present embodiment, Composition 1, Composition 10 to Composition 11, which include oil and O / W emulsifiers in a weight ratio of 1:0.4 to 2.5 among the components constituting the oil-in-water emulsion, form a W / O / W emulsion by emulsification of the W / O emulsion and the O / W emulsion, and thus achieve a stable emulsified state under various temperature conditions. In addition, it can be confirmed that the use feeling and the moisturizing feeling are very excellent.

[0172] On the contrary, it can be seen that Composition 12 to Composition 13, which do not include oil and O / W emulsifiers in a weight ratio of 1:0.4 to 2.5 among the components constituting the oil-in-water emulsion, are not stable in the emulsified state and are reduced in the use feeling and the moisturizing feeling, not according to the present embodiment.

[0173] That is, it can be seen from the foregoing that, when a W / O / W emulsion cosmetic composition is prepared by emulsification of a W / O emulsion and an O / W emulsion, by including oil and O / W emulsifiers in a weight ratio of 1:0.4 to 2.5 in the O / W emulsion, it is possible to provide a W / O / W emulsion cosmetic composition which is excellent in emulsion stability under various temperature conditions and is excellent in use feeling and moisturizing feeling.

[0174] Example 4: Evaluation of properties of cosmetic compositions according to the mixing amount of W / O emulsion and O / W emulsifier

[0175] (1) Preparation of cosmetic composition

[0176] The W / O emulsion of Preparation Example 2 and the O / W emulsion of Preparation Example 6 were mixed and emulsified to prepare cosmetic compositions, wherein the two emulsions were mixed in the proportions according to Table 12 [unit: weight parts] to prepare the cosmetic compositions.

[0177] Table 12

[0178]

[0179] (2) Evaluation of properties of cosmetic composition

[0180] The cosmetic compositions of Composition 14 to Composition 21 were evaluated for properties in the same manner as in Example 1, and the results are shown in Table 13.

[0181] Table 13

[0182]

[0183] Referring to Table 13, it can be seen that when a W / O / W emulsion cosmetic composition is prepared by mixing 300 parts by weight to 2400 parts by weight of an oil-in-water cosmetic composition based on 100 parts by weight of a water-in-oil cosmetic composition, a stable emulsified state can be achieved under various temperature conditions and at the same time excellent use feeling and moisturizing feeling can be achieved.

[0184] Example 5: Transdermal absorption rate evaluation

[0185] Compositions 22 to 24 were prepared, and about 0.3 g was applied to the skin and evaluated for transdermal absorption rate of niacinamide, and the results are shown in Table 14 and Table 15.

[0186] At this time, the quantitative detection value of the amount of niacinamide permeated (ppm) according to the change in time is shown in Table 14. In addition, the total amount of niacinamide permeated [total amount of niacinamide permeated = TOTAL / 0.3] and the permeation rate [permeation rate = total amount of niacinamide permeated / 200] were calculated therefrom, and the results are shown in Table 15.

[0187] - Composition 22 (O / W emulsion): prepared in the same manner as Preparation Example 6 (O / W emulsion), but the water phase portion thereof was made to include niacinamide after preparation;

[0188] - Composition 23 (W / O / W emulsion): prepared in the same manner as Composition 16, but the water phase portion of the W / O emulsion was made to include niacinamide after preparation;

[0189] - Composition 24 (W / O / W emulsion): prepared identically to Composition 16, but the water phase portion of the O / W emulsion was made to include nicotinamide after preparation;

[0190] In Composition 22 to Composition 24, 2% by weight based on the total composition of nicotinamide was used.

[0191] Table 14

[0192]

[0193] Table 15

[0194] Permeation amount [PPM] Permeation rate [%] Composition 22 708.27 3.54 Composition 23 883.40 4.42 Composition 24 1264.47 6.32

[0195] Referring to Table 14 and Table 15, the nicotinamide transdermal absorption rate of Composition 23 and Composition 24, which are W / O / W emulsions, is more excellent than that of Composition 22, which is an O / W emulsion, and the skin absorption rate of the active ingredient is further improved when the cosmetic composition is formed in the form of a W / O / W emulsion.

[0196] In addition, it can be seen that in the W / O / W emulsion, the nicotinamide transdermal absorption rate of Composition 24, which includes nicotinamide in the outermost water phase, is more excellent than that of Composition 23, which includes nicotinamide in the innermost water phase, and the skin can effectively absorb the active ingredient when formed in the form of a W / O / W emulsion and contains the active ingredient in the outermost water phase.

[0197] As described above, the description in the present application is exemplary, and those skilled in the art to which the present application pertains can understand that it can be easily changed to other specific forms without changing the technical idea or essential characteristics of the present application. Therefore, it should be understood that the above-described embodiments are exemplary in all aspects, not limiting. For example, each constituent element described in a single type can be implemented separately, and similarly, constituent elements described in separate types can also be implemented in a combined form.

[0198] The scope of the present application should be indicated by the claims rather than the above-described detailed description, and all changes or modified forms derived from the meaning and scope of the claims and equivalent concepts thereof should be interpreted as included in the scope of the present application.

Claims

1. A W / O / W emulsion cosmetic composition characterized in that, It includes: a water-in-oil emulsion including a W / O oil phase portion and a W / O water phase portion, the W / O oil phase portion including a W / O emulsifier and a wax, wherein the water-in-oil emulsion includes the W / O emulsifier and the wax in a weight ratio of 1:0.3 to 9, and an oil-in-water emulsion including an O / W oil phase portion and an O / W water phase portion, the O / W oil phase portion including an O / W emulsifier including at least one selected from the group consisting of a fatty acid ester emulsifier, a fatty acid, and a fatty alcohol, a wax, and an oil, the O / W water phase portion including a thickening agent and a polyol, wherein the oil-in-water emulsion includes the oil and the O / W emulsifier in a weight ratio of 1:0.4 to 2.5, wherein the oil-in-water emulsion includes the thickening agent and the fatty acid ester emulsifier in a weight ratio of 1:5 to 29, and wherein the W / O / W emulsion cosmetic composition includes 300 parts by weight to 2400 parts by weight of the oil-in-water emulsion based on 100 parts by weight of the water-in-oil emulsion. 2.The W / O / W emulsion cosmetic composition of claim 1, wherein: the water-in-oil emulsion includes 0.01% to 10% by weight of the W / O emulsifier and 0.01% to 10% by weight of the wax based on the total weight of the water-in-oil emulsion. 3.The W / O / W emulsion cosmetic composition of claim 1, wherein: the oil-in-water emulsion includes 0.1% to 28% by weight of the O / W emulsifier, 0.5% to 5% by weight of the wax, 0.5% to 40% by weight of the oil, 0.1% to 3% by weight of the thickening agent, and 20% to 40% by weight of the polyol based on the total weight of the oil-in-water emulsion. 4.The W / O / W emulsion cosmetic composition of claim 1, wherein: the W / O / W emulsion cosmetic composition further includes an active ingredient, and the active ingredient is included in the O / W water phase portion. 5.The W / O / W emulsion cosmetic composition of claim 1, wherein: the W / O / W emulsion cosmetic composition is emulsified by the oil-in-water emulsion and the water-in-oil emulsion. It includes: preparing a water-in-oil emulsion including a W / O oil phase portion and a W / O water phase portion, the W / O oil phase portion including a W / O emulsifier and a wax, wherein the water-in-oil emulsion includes the W / O emulsifier and the wax in a weight ratio of 1:0.3 to 9; preparing an oil-in-water emulsion including an O / W oil phase portion and an O / W water phase portion, the O / W oil phase portion including an O / W emulsifier including at least one selected from the group consisting of a fatty acid ester emulsifier, a fatty acid, and a fatty alcohol, a wax, and an oil, the O / W water phase portion including a thickening agent and a polyol, 6. A method for preparing a W / O / W emulsion cosmetic composition, characterized by, wherein the oil-in-water emulsion includes the oil and the O / W emulsifier in a weight ratio of 1:0.4 to 2.5, wherein the oil-in-water emulsion includes the thickening agent and the fatty acid ester emulsifier in a weight ratio of 1:5 to 29, and ​ ​ ​ wherein the oil-in-water emulsion includes the thickening agent and the fatty acid ester emulsifier in a weight ratio of 1:5 to 29; and putting the water-in-oil emulsion into the oil-in-water emulsion and stirring, thereby preparing a W / O / W emulsion cosmetic composition, wherein the W / O / W emulsion cosmetic composition includes 300 parts by weight to 2400 parts by weight of the oil-in-water emulsion, based on 100 parts by weight of the water-in-oil emulsion.

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