UV-blocking cosmetic composition having chromatic emulsion properties

Abstract

The present invention relates to a cosmetic composition for blocking ultraviolet rays in the form of a chromatic emulsion, which contains a high content of an organic ultraviolet blocking agent and a silicone surfactant in which dimethicone to which polyethylene glycol has been added and polypropylene glycol are crosslinked. Even though the cosmetic composition according to the present invention contains a high content of an organic ultraviolet blocking agent, it can exhibit stable chromatic emulsion properties.

Description

[Technical field]

[0001] The present invention relates to a cosmetic composition for blocking ultraviolet light, which has stable chromatic emulsion properties and exhibits a structural color. [Background technology]

[0002] Ultraviolet rays emitted from sunlight are the main cause of skin erythema, edema, freckles and skin cancer. As a result, much research into various skin diseases caused by ultraviolet rays has been actively conducted recently.

[0003] Generally, ultraviolet rays are divided into UV-A, UV-B and UV-C according to their wavelengths, with UV-A having a wavelength of 320-400 nm, UV-B having a wavelength of 280-320 nm and UV-C having a wavelength of 200-280 nm. UV-A is known to penetrate into the dermis of the skin and induce skin cancer, as well as skin aging and skin irritation by promoting wrinkles and melanin formation, while UV-B is known to penetrate into the epidermis of the skin and induce erythema, freckles or edema. UV-C passes through the ozone layer and is lost without reaching the earth's surface.

[0004] In order to prevent or improve the above-mentioned sun exposure-related skin diseases, consumers are increasingly interested in UV protection products. As a result, UV protection products with various types of sun protection factors (SPF) are being marketed. In general, UV protection products contain inorganic UV protection agents such as titanium dioxide or zinc oxide, or organic UV protection agents such as ethylhexyl methoxycinnamate, ethylhexyl salicylate, octocrylene, ethylhexyl triazone, bisethylhexyloxyphenol methoxyphenyl triazine, or diethylamino hydroxybenzoyl hexyl benzoate to show high SPF values.

[0005] However, most organic UV blocking agents used in UV blocking products are oil-soluble components with high refractive index, and inorganic UV blocking agents are opaque powder components, so that typical UV blocking products (sunscreens) have an opaque emulsion appearance.

[0006] In addition, a chromatic emulsion means an emulsion that is transparent but exhibits structural color due to the difference in light dispersion ability between the aqueous phase and the oil phase by adjusting the refractive index of the aqueous phase and the oil phase of the composition (J. Am. Chem. Soc., Chromatic Emulsion, 1922, 44(1), pp71-74). Although many studies on cosmetics using chromatic emulsions have been attempted, no breakthrough has been developed to date for producing a cosmetic composition for blocking ultraviolet rays having stable chromatic emulsion properties that can block ultraviolet rays in daily life. Summary of the Invention [Problem to be solved by the invention]

[0007] The present inventors conducted research to develop a cosmetic composition for blocking UV rays that has stable chromatic emulsion properties and is transparent while exhibiting structural color, compared to conventional cosmetic compositions for blocking UV rays that have an opaque appearance. As a result, they found that when a silicone-based surfactant excluding specific ingredients is added to a cosmetic composition in a specific amount together with an organic UV blocking agent, the cosmetic composition exhibits chromatic emulsion properties while having excellent formulation stability, and thus completed the present invention.

[0008] Therefore, an object of the present invention is to provide a cosmetic composition that does not exhibit cloudiness, is stable, and exhibits chromatic emulsion properties that express structural color by containing an organic UV blocking agent and a silicone surfactant, excluding PEG-15 / lauryl dimethicone crosspolymer, within a specific content range. [Means for solving the problem]

[0009] As a means for solving the above problems, the present invention provides Provided is a cosmetic composition for blocking ultraviolet rays, which contains an organic ultraviolet blocking agent and a silicone surfactant.

[0010] The present invention also provides a method for preparing a cosmetic composition for blocking ultraviolet rays, comprising mixing an organic ultraviolet blocking agent and a silicone surfactant.

[0011] The configuration of the present invention will be described in detail below.

[0012] The present invention relates to Based on the weight of the entire composition, The present invention provides a cosmetic composition for blocking ultraviolet rays, comprising an oil phase containing 10 to 40 parts by weight of an organic ultraviolet blocking agent and 1 to 10 parts by weight of a silicone surfactant in which dimethicone to which polyethylene glycol has been added and polypropylene glycol have been crosslinked, and a water phase.

[0013] In the present invention, the organic ultraviolet blocking agent is ethylhexyl methoxycinnamate, isoamyl p-methoxycinnamate, ethylhexyl salicylate, octocrylene, polysilicone-15, homosalate, phenylbenzimidazole sulfonic acid, bisethylhexyloxyphenol methoxyphenyl triazine, butyl methoxydibenzoylmethane, diethylamino hydroxybenzoyl hexyl benzoate, ethylhexyl triazone, 4-methylbenzylidene. camphor The organic ultraviolet blocking agent may be selected from the group consisting of, but is not limited to, benzophenone-3, diethylhexylbutamide triazone, and disodium phenyl dibenzimidazole tetrasulfonate. The organic ultraviolet blocking agent may be any organic material that has been used for blocking ultraviolet rays in the past, without any restrictions.

[0014] In the present invention, when the organic UV blocking agent is included in an amount of 10 to 40 parts by weight based on the weight of the entire cosmetic composition, it can provide excellent UV blocking effect and feeling of use. If the composition includes the organic UV blocking agent in an amount of less than 10 parts by weight, it cannot show sufficient UV blocking effect, and if it includes the organic UV blocking agent in an amount of more than 40 parts by weight, problems such as skin irritation or oily feeling of use may occur. For example, the organic UV blocking agent may be included in an amount of 10 to 35 parts by weight, 10 to 30 parts by weight, 10 to 25 parts by weight, 10 to 20 parts by weight, 15 to 35 parts by weight, 15 to 30 parts by weight, 15 to 25 parts by weight, 15 to 20 parts by weight, 20 to 35 parts by weight, 20 to 30 parts by weight, 25 to 35 parts by weight, or 25 to 30 parts by weight based on the weight of the entire composition.

[0015] In the present invention, the silicone-based surfactant is characterized by excluding PEG-15 / lauryl dimethicone crosspolymer, and may be a silicone-based surfactant in which dimethicone having 1 to 30 moles of polyethylene glycol (PEG) added thereto is crosslinked with 1 to 30 moles of polypropylene glycol (PPG).

[0016] In one embodiment, the silicone surfactant can be, but is not limited to, PEG-12 dimethicone / PPG-20 crosspolymer.

[0017] In the following examples, it was confirmed that a cosmetic composition (Comparative Example 2) using PEG-15 / lauryl dimethicone crosspolymer as a silicone surfactant exhibited poor formulation stability, such as phase separation, at high temperatures (50°C).

[0018] In the present invention, the silicone surfactant may be included in an amount of 1 to 10 parts by weight, for example, 1 to 8 parts by weight, 1 to 6.5 parts by weight, 1 to 5 parts by weight, 3 to 10 parts by weight, 3 to 8 parts by weight, 3 to 5 parts by weight, 4 to 10 parts by weight, 4 to 8 parts by weight, 4 to 6.5 parts by weight, 4.5 to 6.3 parts by weight, based on the parts by weight of the entire composition. In the present invention, if the content of the silicone surfactant is out of the above range, it may affect the refractive index of the oil phase, causing a problem in the transparency of the formulation.

[0019] In the present invention, the cosmetic composition may further include a nonionic surfactant. The nonionic surfactant may be selected from the group consisting of polyether-modified silicone, polyglycerin-modified silicone, glyceryl fatty acid ester, polyglyceryl fatty acid ester, polyether fatty acid ester, sorbitan fatty acid ester, and sucrose fatty acid ester. More specifically, the nonionic surfactant may be, but is not limited to, lauryl PEG-9 polydimethylsiloxyethyl dimethicone, polyglyceryl-6 polyricinoleate, sorbitan sesquioleate, sorbitan isostearate, PEG-9 polydimethylsiloxyethyl dimethicone, PEG-10 dimethicone, or cetyl PEG / PPG-10 / 1 dimethicone.

[0020] In one embodiment, the non-ionic surfactant can be a polyether modified silicone, such as Lauryl PEG-9 Polydimethylsiloxyethyl Dimethicone.

[0021] In the present invention, when the cosmetic composition for blocking ultraviolet rays contains a silicone-based surfactant in which dimethicone to which polyethylene glycol has been added and polypropylene glycol are crosslinked, and the nonionic surfactant, the combined use of the silicone-based surfactant and the nonionic surfactant provides excellent compatibility, and allows the composition to exhibit a transparent formulation while still exhibiting a structural color.

[0022] In the present invention, the nonionic surfactant may be included in an amount of 0.1 to 10 parts by weight, for example, 0.5 to 5 parts by weight, 1 to 3 parts by weight, 0.1 to 5 parts by weight, or 0.1 to 3 parts by weight, based on the parts by weight of the total composition.

[0023] The composition according to the present invention includes an oil phase containing the organic UV protection agent and a silicone surfactant. In the present invention, the oil phase may further include a nonionic surfactant, oil or wax. The oil and wax may be any oil or wax commonly used in the art as a cosmetic ingredient. For example, the oil may be a silicone oil, an ester oil, a triglyceride oil, a hydrocarbon oil or a vegetable oil, and one or more of these ingredients may be used in combination as needed.

[0024] For example, the silicone oil can be silicone fluid oil or silicone crosspolymer dispersed in oil.For example, the silicone fluid oil can be cyclopentasiloxane, cyclohexasiloxane, cycloheptasiloxane, cyclomethicone, cyclophenylmethicone, cyclotetrasiloxane, cyclotrisiloxane, dimethicone, capryl dimethicone, caprylyl trimethicone, caprylyl methicone, cetearyl methicone, hexadecyl methicone, hexyl methicone, lauryl methicone, myristyl methicone, phenylmethicone, stearyl methicone, stearyl dimethicone, trifluoropropyl methicone, cetyl dimethicone, diphenylsiloxyphenyl trimethicone, dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, methyl trimethicone or phenyl trimethicone. The silicone oil component may be used alone or in combination of two or more kinds.

[0025] Ester oils include dicaprylyl carbonate, ascorbyl palmitate, ascorbyl linoleate, ascorbyl stearate, diisostearyl malate, benzyl benzoate, benzyl laurate, butylene glycol dicaprylate / dicaprate, butylene glycol diisononanoate, butylene glycol laurate, butylene glycol stearate, butyl isostearate, cetearyl isononanoate, cetearyl nonanoate, cetyl caprylate, cetyl ethylhexanoate, cetyl isononanoate, ethylhexyl caprylate / caprate, ethylhexyl isononanoate, ethylhexyl isostearate, ethylhexyl laurate, hexyl laurate, octyldodecyl isostearate, isopropyl isostearate, isostearyl isononanoate, isostearyl isostearate, isocetyl ethyl Examples of the polyglyceryl ethers that can be used include polyglyceryl etherstearate, neopentyl glycol dicaprate, neopentyl glycol diethylhexanoate, neopentyl glycol diisononanoate, neopentyl glycol diisostearate, pentaerythrityl stearate, pentaerythrityl tetraethylhexanoate, dipentaerythrityl hexaacid ester, polyglyceryl-2 diisostearate, polyglyceryl-2 sesquiisostearate, polyglyceryl-2 isostearate, polyglyceryl-2 tetraisostearate, polyglyceryl-2 triisostearate, polyglyceryl-3 diisostearate, polyglyceryl-3 isostearate, polyglyceryl-4 diisostearate, polyglyceryl-4 isostearate, polyglyceryl-6 diisostearate, polyglyceryl-6 sesquiisostearate, and triethylhexanoin.

[0026] The triglyceride oils that can be used include C8-C12 acid triglyceride, C12-C18 acid triglyceride, caprylic / capric / triglyceride, caprylic / capric / lauric triglyceride, C10-C40 isoalkyl acid triglyceride, C10-C18 triglyceride, glyceryl triacetylhydrostearate, soybean glyceride, tribehenin, tricaprin, triethylhexanoin, triheptanoin, triisostearin, tripalmitin, or tristearin.

[0027] As the hydrocarbon oil, liquid paraffin (mineral oil), paraffin, Vaseline, microcrystalline wax, squalene, or the like can be used.

[0028] As vegetable oils, avocado oil, wheat germ oil, rosehip oil, shea butter, almond oil, olive oil, macadamia oil, argan oil, meadowfoam oil, sunflower oil, castor oil, camellia oil, corn oil, safflower oil, soybean oil, rapeseed oil, macadamia knot oil, jojoba oil, palm oil, palm kernel oil or coconut oil can be used.

[0029] The wax may be any wax commonly used in cosmetics, such as a hydrocarbon wax, a vegetable wax, or a silicone wax. For example, the wax may include, but is not limited to, candelilla wax, carnauba wax, rice wax, beeswax, lanolin, ozokerite, ceresin wax, paraffin wax, microcrystalline wax, C30-C45 alkyldimethylsilyl polypropylsilsesquioxane, ethylene / propylene copolymer, or polyethylene wax.

[0030] The content of the oil phase is not particularly limited, and the content can be adjusted in order to adjust the refractive index difference with the aqueous phase.

[0031] In one embodiment, the content of the oil or wax may be 10 to 55 parts by weight, for example, 15 to 50 parts by weight, 20 to 45 parts by weight, 25 to 40 parts by weight, or 29 to 36 parts by weight, based on the weight of the entire composition. When the composition of the present invention contains oil in the above range, the content of polyol, which is relatively sticky, can be reduced, and a cosmetic composition having excellent usability can be provided.

[0032] In addition, in the composition of the present invention, the aqueous phase means that it contains purified water, and the aqueous phase may further contain a polyol. The polyol may be selected from the group consisting of glycerin, 1,3-butylene glycol, dipropylene glycol, and propylene glycol, but any component that can be used to increase the refractive index of the aqueous phase may be used without limitation.

[0033] Generally, since the aqueous phase has a lower refractive index than the oil phase, it is not easy to reduce the refractive index difference between the aqueous phase and the oil phase. The cosmetic composition according to the present invention may have a refractive index difference between the oil phase and the aqueous phase of 0.009 or less. The cosmetic composition according to the present invention may exhibit chromatic emulsion properties that exhibit structural color while being transparent due to the low refractive index difference. If the refractive index difference between the oil phase and the aqueous phase exceeds 0.009, problems such as reduced formulation stability may occur.

[0034] In one embodiment, the difference in refractive index between the oil phase and the aqueous phase may be less than 0.005.

[0035] In the present invention, the term "chromatic emulsion" refers to a property that exhibits structural colors depending on the viewing angle and light source without using pigments or dyes as colorants, and "structural color" refers to colors that appear when particles act like a prism and disperse, refract, and interfere with light.

[0036] The cosmetic composition of the present invention may further contain all kinds of additives that can be used in ordinary cosmetics. The additives may include both natural and synthetic additives.

[0037] The natural additives refer to ingredients such as organic agricultural raw materials, plants and plant-derived raw materials, animals and animal-derived raw materials, minerals and mineral-derived raw materials, water, etc. Examples of the natural additives include one or more additives selected from the group consisting of moisturizers, UV blocking agents, neutralizing agents, fragrances, preservatives, antioxidants, thickeners, viscosity regulators, film-forming agents, and colorants.

[0038] The natural additives may be included in an amount of 0.01 to 3 parts by weight, for example, 0.05 to 2 parts by weight, or 0.1 to 1 part by weight, based on 100 parts by weight of the total composition.

[0039] In the present invention, the natural additive includes a natural product or a product obtained from a natural substance, a natural product or a product derived from a natural substance that is simply modified, or a synthetic product among natural products, but excludes a synthetic product that is not a natural product but is synthesized by an artificial method.

[0040] The natural raw materials may refer to, for example, cosmetic raw materials of natural origin that meet national organic agricultural standards and environmental certification standards or are equivalent thereto.

[0041] The eco-certification standard is a composition made of ingredients that are grown and processed in an eco-friendly manner, without any synthetic processes, and representative eco-certifications include Ecocert in France, Cosmos in Europe, USDA (US Department of Agriculture) in the United States, BDIH (Association of German Industries and Trading Firms) in Germany, and JAS (Japanese Association of Standards) in Japan. In response to the recent consumer needs for eco-friendly products, various eco-certification systems that certify the safety of ingredients or products are being developed in each country. Although each country shows partial differences in detailed values ​​and scope, when it comes to the primary composition of raw materials and ingredients, in the big picture, there is global uniformity in the scope of eco-certification. Natural ingredients derived from nature are included in the category of environmentally friendly organic agricultural ingredients, while other semi-processed ingredients are classified as PPAI (Physically Processed Agro Ingredients) and CPAI (Chemically Processed Agro Ingredients), and only raw materials that meet these standards are given certification from Ecocert, Cosmos, USDA, etc.

[0042] In the present invention, the term "nationally certified organic and eco-friendly raw materials and ingredients" refers to cosmetic raw materials and compositions that are composed only of ingredients that meet or can meet the national organic standards and eco-friendly certification standards and can satisfy the national organic and eco-friendly grades. For example, it means that the cosmetic raw materials and compositions are composed only of ingredients that meet or can meet the standards set by the Chinese government or the organic and eco-friendly certification standards certified in China.

[0043] In the present invention, the synthetic additive means a raw material that is not naturally derived but is chemically synthesized.

[0044] Each of the above-mentioned components contained in the cosmetic composition according to the present invention may be preferably contained in the cosmetic composition according to the present invention within a range not exceeding the maximum usage amount stipulated in the "Cosmetic Safety and Technical Standards" established by the Chinese government.

[0045] The cosmetic composition according to the present invention can be prepared in any dosage form commonly prepared in the art. For example, the cosmetic composition can have the dosage form of a lotion such as a softening lotion or a nutritious lotion, a spray type lotion, a milky lotion such as a facial lotion or a body lotion, a cream such as a nutritious cream, a moisturizing cream, an eye cream, a stick, an essence, a cosmetic ointment, a spray, a gel, a pack, a sunscreen, a makeup base, a liquid type or a spray type foundation, a powder, a makeup remover such as a cleansing lotion or a cleansing oil, a cleansing agent such as a cleansing foam, a soap, a body wash, etc., but is not limited thereto.

[0046] In one embodiment, the cosmetic composition may be in the form of a water-in-oil (W / O) formulation.

[0047] In one embodiment, the cosmetic composition may be transparent or translucent in nature.

[0048] The cosmetic composition of the present invention can be used in a normal manner, and the frequency of use can be varied depending on the skin condition or preference of the user.

[0049] The present invention may also relate to the use of the cosmetic composition for the manufacture of cosmetics. The description of the above-mentioned cosmetic may be applied mutatis mutandis to the cosmetic composition for the manufacture of cosmetics of the present invention.

[0050] The cosmetic product may be a general cosmetic product, a natural cosmetic product, a hypoallergenic cosmetic product or an organic cosmetic product.

[0051] In addition, the method for producing the cosmetic composition of the present invention includes a step of preparing an oil phase by mixing an organic UV blocking agent, dimethicone to which polyethylene glycol has been added, and a silicone-based surfactant in which polypropylene glycol has been crosslinked.

[0052] In the above preparation method, based on 100 parts by weight of the total composition, the organic UV blocking agent may be 10 to 40 parts by weight, and the silicone surfactant in which dimethicone to which polyethylene glycol is added and polypropylene glycol are crosslinked may be less than 10 parts by weight.

[0053] The method may further include a step of adding an aqueous phase to the oil phase and emulsifying the aqueous phase.

[0054] The method may further include a step of adding a nonionic surfactant to the oil phase.

[0055] The organic ultraviolet blocking agent, the silicone surfactant in which dimethicone to which polyethylene glycol has been added and polypropylene glycol have been crosslinked, and the cosmetic composition can be the same as those described above for the cosmetic.

[0056] The advantages and features of the present invention, as well as the methods for achieving them, will become clear from the detailed experimental and manufacturing examples described below. However, the present invention is not limited to the experimental and manufacturing examples disclosed below, and may be embodied in various different forms, and are provided solely for the purpose of making the disclosure of the present invention complete and fully conveying the scope of the invention to those skilled in the art. Effect of the Invention

[0057] The present invention relates to a cosmetic composition for blocking ultraviolet rays having chromatic emulsion properties, which contains a high content of an organic ultraviolet blocking agent and a silicone surfactant in which dimethicone to which polyethylene glycol has been added and polypropylene glycol are crosslinked. Even if the cosmetic composition according to the present invention contains a high content of an organic ultraviolet blocking agent, it can exhibit stable chromatic emulsion properties. [Brief description of the drawings]

[0058] [Figure 1] 1 shows cosmetic compositions for blocking ultraviolet light according to Examples 1 to 3 of the present invention. [Diagram 2] 1 shows ultraviolet blocking cosmetic compositions of Comparative Examples 1 and 2 according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0059] The present invention will be described in detail with reference to the following examples. However, the following examples are merely illustrative of the present invention, and the content of the present invention is not limited to the following examples.

[0060] <Examples 1 to 3. Production of cosmetic compositions> The cosmetic compositions of Examples 1 to 3 were prepared according to the compositions shown in Table 1 below. First, each raw material of Part A was heated to 70 to 90°C while stirring to completely dissolve. After the dissolved solution was cooled to 45°C, Part A was added to Part B and mixed while stirring. Part C, which had been stirred separately, was slowly added to the mixture of Part A and Part B prepared in advance while stirring, and mixed uniformly to form an emulsification. After emulsification, the mixture was cooled to 30°C and degassed to produce the cosmetic composition.

[0061] [Table 1]

[0062] <Comparative Examples 1 and 2. Preparation of Cosmetic Compositions> Cosmetic compositions were produced using the compositions shown in Table 2 below in the same manner as in Examples 1 to 3.

[0063] [Table 2]

[0064] <Experimental Example 1. Measurement of the refractive index of the aqueous phase and the oil phase> The refractive indexes of the aqueous and oily phases of the cosmetic compositions prepared in Examples 1 to 3 and Comparative Examples 1 and 2 were measured by stacking the aqueous and oily phases at 25° C. using an Abbe refractometer (KRUSS Optronic, Germany) (Table 3). In this case, the refractive indexes of the aqueous and oily phases of the cosmetic composition of Example 1 were measured 10 times to confirm the difference in refractive index (Table 4).

[0065] [Table 3]

[0066] [Table 4]

[0067] In order to reduce the difference in refractive index between the oil phase and the aqueous phase, the refractive index of the oil phase is first measured, and then the weight parts of glycerin and purified water are adjusted to reduce the difference in refractive index. In addition, the refractive index of the aqueous phase and the oil phase was measured 10 times for Example 1 (Table 4), and it was confirmed that a measurement error of up to 0.0025 can occur even for the same contents.

[0068] <Experimental Example 2. Measurement of hardness, UV protection factor (SPF) and UVA protection factor (UVAPF)> The hardness, sun protection factor (SPF) and UVA protection factor (UVAPF) of the cosmetic compositions prepared in Examples 1 to 3 and Comparative Examples 1 and 2 were measured. The hardness of the compositions was measured using a Fudoh Rheometer RTC-3005D model manufactured by Rheotech with adapter #9 at a speed of 2 cm / min to a depth of 2.5 cm on the sample, and the SPF and UVAPF were evaluated using a BASF Sunscreen Simulator, and the SPF and UVAPF values ​​were shown in Table 5.

[0069] [Table 5]

[0070] As is apparent from Table 5, in Examples 1 to 3, various SPF and UVAPF values ​​were obtained depending on the type and content of the organic UV blocking agent.

[0071] <Experimental Example 3. Confirmation of dosage form stability> The formulation stability of the composition was confirmed by visually observing the composition after storing the composition under different temperature conditions (0°C, 25°C, and 50°C) for 4 weeks to determine the formulation stability based on the presence or absence of layer separation.

[0072] [Evaluation Criteria] Stable: No phase separation Separation: Layer separation appears

[0073] [Table 6]

[0074] As a result of examining the formulation stability depending on the storage temperature, it was found that the cosmetic compositions of Examples 1 to 3 maintained stability for 4 weeks at temperatures between 0°C and 50°C, while the composition of Comparative Example 2 showed phase separation at temperatures of 0°C, 25°C, and 50°C.

[0075] <Experimental Example 4. Evaluation of transparency and color development> The transparency and color intensity of the cosmetic compositions prepared in Examples 1 to 3 and Comparative Examples 1 and 2 were visually evaluated, and are shown in Table 7, Figures 1 and 2. The transparency and structural color intensity of the cosmetic compositions were visually evaluated by a panel of five men and five women while storing the compositions at 25°C for 120 minutes.

[0076] [Transparency evaluation criteria] ◎: Very transparent ○:Transparent △: Translucent ×: Opaque

[0077] [Evaluation criteria for color expression intensity] ◎: Very strong ○: Strong △: Weak ×: None

[0078] [Table 7]

[0079] As shown in Table 7, the cosmetic compositions of Examples 1 to 3 exhibited a transparent formulation, while the cosmetic composition of Comparative Example 1 exhibited a translucent formulation. This was determined to be because the refractive index difference between the aqueous phase and the oil phase in Comparative Example 1 was shown to be 0.0095, which was larger than that in Examples 1 to 3.

Claims

1. A cosmetic composition for blocking ultraviolet rays, comprising an oil phase portion containing 10 to 40 parts by weight of an organic ultraviolet ray blocking agent, less than 10 parts by weight of a silicone-based surfactant in which dimethicone to which polyethylene glycol has been added and polypropylene glycol have been crosslinked, and 0.1 to 10 parts by weight of a nonionic surfactant, based on 100 parts by weight of the total composition, and a water phase portion, the nonionic surfactant comprises lauryl PEG-9 polydimethylsiloxyethyl dimethicone; The cosmetic composition for blocking ultraviolet rays does not contain composite silicone particles having an average particle size of 10 μm or less, hydrophobically treated inorganic powder, or organically modified synthetic fluorine mica, The cosmetic composition for blocking ultraviolet rays has a refractive index difference between the oil phase and the aqueous phase of 0.009 or less.

2. 2. The cosmetic composition for blocking ultraviolet rays according to claim 1, wherein the organic ultraviolet blocking agent is at least one selected from the group consisting of ethylhexyl methoxycinnamate, isoamyl p-methoxycinnamate, ethylhexyl salicylate, octocrylene, polysilicone-15, homosalate, phenylbenzimidazole sulfonic acid, bisethylhexyloxyphenol methoxyphenyl triazine, butyl methoxydibenzoylmethane, diethylamino hydroxybenzoyl hexyl benzoate, ethylhexyl triazone, 4-methylbenzylidene camphor, benzophenone-3, diethylhexylbutamide triazone, and disodium phenyl dibenzimidazole tetrasulfonate.

3. 2. The ultraviolet blocking cosmetic composition according to claim 1, wherein the silicone surfactant is a silicone surfactant in which dimethicone to which 1 to 30 moles of polyethylene glycol have been added is crosslinked with 1 to 30 moles of polypropylene glycol.

4. The ultraviolet blocking cosmetic composition according to claim 1 , wherein the aqueous phase further comprises a polyol.

5. 2. The cosmetic composition for blocking ultraviolet light according to claim 1, wherein the cosmetic composition is in a water-in-oil (W / O) formulation.

6. 2. The cosmetic composition for blocking ultraviolet light according to claim 1, which exhibits a structural color.

7. The method includes the step of preparing an oil phase by mixing 10 to 40 parts by weight of an organic UV blocking agent, less than 10 parts by weight of a silicone surfactant in which dimethicone to which polyethylene glycol is added and polypropylene glycol are crosslinked, and 0.1 to 10 parts by weight of a nonionic surfactant, based on 100 parts by weight of the total composition; A method for producing an ultraviolet blocking cosmetic composition, wherein the nonionic surfactant contains lauryl PEG-9 polydimethylsiloxyethyl dimethicone, The cosmetic composition for blocking ultraviolet light does not contain composite silicone particles having an average particle size of 10 μm or less, hydrophobically treated inorganic powder, or organically modified synthetic fluorine mica.

8. The method for producing a cosmetic composition for blocking ultraviolet rays according to claim 7 , further comprising the step of adding and emulsifying the aqueous phase part to the oil phase part.

9. The method for producing an ultraviolet blocking cosmetic composition according to claim 7, wherein the silicone surfactant is a silicone surfactant in which dimethicone to which 1 to 30 moles of polyethylene glycol have been added is crosslinked with 1 to 30 moles of polypropylene glycol.

10. The method for producing an ultraviolet blocking cosmetic composition according to claim 8 , wherein the aqueous phase further comprises a polyol.

11. The method for producing a cosmetic composition for blocking ultraviolet light according to claim 7, wherein the cosmetic composition is in a water-in-oil (W / O) formulation.

12. The method for producing an ultraviolet blocking cosmetic composition according to claim 7, wherein the cosmetic composition exhibits a structural color.

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