KR102202394B1 - Oil in water type sunscreen cosmetic composition comprising algin - Google Patents

Abstract

The present invention relates to a sunscreen cosmetic composition, and more specifically, 1 to 40% by weight of an oil component, 0.01 to 10% by weight of an emulsifier, 1 to 70% by weight of a sunscreen, 0.01 to 5% by weight of algin, and It relates to a sunscreen cosmetic composition comprising the remaining amount of the water phase component. The oil-in-water type sun-blocking cosmetic composition of the present invention contains algin and has a remarkably excellent sun-blocking effect by making the structure of algin's formulation solid. Particularly, the water-in-water type sun-blocking cosmetic composition of the present invention is rather excellent in sustaining the sun-blocking effect when an aqueous solution containing minerals such as sweat and seawater is encountered.

Description

Oil in water type sunscreen cosmetic composition comprising algin}

The present invention relates to a sunscreen cosmetic composition, and more specifically, to a cosmetic composition containing algin, which has remarkably excellent sunscreen effect.

Conventional sunscreen compositions have generally used a water-in-oil type formulation to sustain a high sun-blocking effect for a long time, but the water-in-oil type has disadvantages of stiff application and drying after application of the skin. In order to improve this, a natural polymer thickener was added to the aqueous dispersion phase to improve UV protection and application properties (JP 2010-195773 A), or a specific powder to improve the feel of use (KR 2014-0067966 A). There is.

However, there is a trend that a UV-blocking composition of an oil-in-water type formulation having more excellent spreadability and feeling of use is increasingly being used. The water-in-water type sunscreen composition has gained popularity with the advantages of light application and a moist feeling, and has become a trend in the current sunscreen market.However, when it comes into contact with water, the trauma water is easily washed away and its lasting power is low, and the sunscreen effect is also compared to the water-in-oil type. It has the disadvantage of falling. As a method to improve this, there is an example in which a water-soluble thickener was added to a composition without an oil-soluble ultraviolet absorber to improve the usability and stability of cosmetics (KR 2012-0023805 A), but the persistence when contacted with water is also reduced. Is an unresolved situation.

The problem to be solved by the present invention is to provide an oil-in-water type sun-blocking cosmetic composition that solves the problem of low UV blocking effect and deterioration of persistence of an oil-in-water type sun-blocking cosmetic composition having a light and moist feeling.

In addition, the problem to be solved by the present invention is to provide an oil-in-water type sun-blocking cosmetic composition that has improved the problem of reducing the sun-blocking effect by diluting the formulation when it meets water containing minerals.

The present invention provides an oil-in-water type sun-blocking cosmetic composition containing algin. The algin may be included and used as a water-soluble thickener, and may be included in the cosmetic composition in an amount of 0.01 to 5% by weight based on the total weight of the composition. The oil-in-water type sun-blocking cosmetic composition according to the present invention is characterized in that the persistence of the sun-blocking effect is improved when it is met with water containing minerals.

As a result of intensive research efforts in order to overcome the problems of the prior art, the present inventors enhance the UV protection effect by making the structure of the alginic formulation solid when adding algin, a natural polymer, to an oil-in-water UV protection cosmetic composition. In particular, the surprising discovery that the UV-blocking effect is maintained when water containing minerals such as sweat and sea water is met, and the present invention has been completed.

According to the oil-in-water type sunscreen cosmetic composition according to the present invention, algin in the composition has an effect of enhancing the sunscreen index. In addition, the water-in-water cosmetic composition had a disadvantage that the water-in-water cosmetic composition was well washed in water, which resulted in poor durability and low UV protection index.However, the water-in-water type sunscreen cosmetic composition of the present invention was exposed to distilled water when exposed to moisture containing minerals. Compared to that, there is a remarkable effect of maintaining the UV blocking index. Through this, when the exposure to moisture in everyday life, that is, sweat or seawater, etc., contains minerals, the water-in-water type UV-blocking cosmetic composition of the present invention has a significant effect in maintaining the UV-blocking effect in everyday life.

In the present invention, algines have a carboxyl group as a reactive group at the end, so they are usually combined with sodium ions and have water-soluble properties, but when they encounter divalent cations such as Ca ²⁺ , Mg ²⁺ , or Cu ²⁺ Two carboxyl groups are bonded to one cation to form a network structure. Algin, which is bound to the divalent cation, has the property of being insoluble in water, thereby increasing the water repellency of the UV-blocking oil-in-water cosmetic composition of the present invention. Exert. 1 shows a molecular structure in which algin has a network structure as an insoluble salt when it encounters a divalent cation.

The oil-in-water type UV-blocking cosmetic composition according to the present invention is applied to all ranges of ultraviolet rays including ultraviolet C (UVC) with a wavelength of 100 to 280 nm, ultraviolet B (UVB) with a wavelength of 280 to 315 nm, and ultraviolet A (UVA) with a wavelength of 315 to 400 nm. The blocking effect is remarkably excellent.

The present invention is an oil-in-water type sunscreen cosmetic comprising 1 to 40% by weight of an oil component, 0.01 to 10% by weight of an emulsifier, 1 to 70% by weight of a sunscreen, 0.01 to 5% by weight of algin, and the remaining amount of water-based ingredients based on the total weight of the composition The composition is provided.

In the sunscreen cosmetic composition according to the present invention, the algin may be contained in an amount of 0.01 to 5% by weight, preferably 0.01 to 4% by weight, more preferably 0.01 to 3% by weight, based on the total weight of the composition. When the algin is less than 0.01% by weight, the persistence of the UV blocking effect is insufficient, and when it is more than 5% by weight, a problem occurs in formulation stability.

In the sunscreen cosmetic composition according to the present invention, the type of the oil component is not particularly limited, and conventional oils used in cosmetic compositions may be used, vegetable oils, animal oils, ester oils, hydrocarbon oils, And it may include any one or more selected from the group consisting of silicone oil and the like.

More specifically, the oil component is a hydrocarbon-based oil including squalane and mineral oil; Caprylic/Capric Triglyceride, Neopentyl Glycol Dicaprate, 2-Octyldodecyl Myristate, Isopropyl Myristerite, Isocetylethylhexanoate, Pentaerythrityl Tetraethylhexanoate, Butylene Glycol Dicapryl Ester oils including rate caprate, hexyllaurate, distearyl maleate, cetyl 2-ethylhexanoate, octyldodecanol, glyceryl triethylhexanoate, and the like; Vegetable oils including olive oil, avocado oil, jojoba oil, macadamia oil, and the like; Animal oils including lanolin and the like; And silicone oils including dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, methylctrimethicone, phenyltrimethicone, cyclomethicone, dimethicone, and the like.It may include any one or more selected from the group consisting of.

The oil component may be included in 1 to 40% by weight, preferably 1 to 20% by weight, more preferably 1 to 10% by weight, based on the total weight of the composition. When the oil component is less than 1% by weight, it is difficult to form an oil-in-water emulsion formulation, and when the content is more than 40% by weight, the feeling of use is deteriorated.

In the sunscreen cosmetic composition according to the present invention, the emulsifier is glycerin monostearate, propylene glycol fatty acid ester, glycerin fatty acid ester, polyglycerin fatty acid ester, sorbitan fatty acid ester, POE (polyoxyethylene) sorbitan fatty acid ester, POE Solbit fatty acid ester, POE glycerin fatty acid ester, POE alkyl ether, POE fatty acid ester, POE hydrogenated castor oil, POE castor oil, POE·POP (polyoxyethylene·polyoxypropylene) copolymer, POE·POP alkyl ether, polyether Any one or more selected from the group consisting of modified silicone, lauric acid alkanolamide, alkylamine oxide, and hydrogenated soybean may be included.

The emulsifier may be included in an amount of 0.01 to 10% by weight, preferably 0.02 to 5% by weight, and more preferably 0.03 to 0.1% by weight, based on the total weight of the composition. When the emulsifier is less than 0.01% by weight, the emulsification effect is significantly reduced and is inappropriate, and when it is more than 10% by weight, a problem occurs in formulation stability.

In the sunscreen cosmetic composition according to the present invention, the sunscreen is a water-soluble sunscreen comprising phenylbenzimidazole sulfonic acid, 2-hydroxy-4-methoxybenzophenone sulfonic acid, or a mixture thereof; Ethylhexylmethoxycinnamate, ethylhexyl salicylate, bis-ethylhexyloxyphenolmethoxyphenyltriazine, diethylaminohydroxybenzoylhexylbenzoate, octocrylene, butylmethoxydibenzoylmethane, oxybenzone, octylt Organic sunscreens including riazone, menthylanthranylate, and 3,4-methylbenzylidene camphor; And inorganic sunscreens including titanium dioxide, zinc oxide, and iron oxide. In the inorganic sunscreen, titanium dioxide may have an average particle size of 0.01 to 100 nm, zinc oxide may have an average particle size of 0.01 to 300 nm, and iron oxide may have an average particle size of 1 to 300 nm.

The sunscreen may be included in an amount of 1 to 70% by weight, preferably 5 to 50% by weight, and more preferably 10 to 30% by weight, based on the total weight of the composition. When the sunscreen agent is less than 1% by weight, the sunscreen effect is significantly reduced and is inappropriate, and when it is more than 70% by weight, a problem occurs in formulation stability.

In the sunscreen cosmetic composition according to the present invention, the aqueous component may include any one or more selected from the group consisting of purified water, propylene glycol, 1,3-butylene glycol, glycerin, and sorbitol.

In addition, the UV-blocking cosmetic composition according to the present invention, in addition to the essential ingredients, to the extent that the effects of the present invention are not impaired, moisturizers, thickeners, powders, alcohols, natural polymers, synthetic polymers, sugars, antioxidants, buffers, various extracts, stable Ingredients, such as an agent, a preservative, a colorant, or a flavoring agent, are suitably blended and prepared according to a conventional method. The moisturizing agent may be glycerin, sorbitol, butylene glycol, dipropylene glycol, propylene glycol, pentylene glycol, propanediol, 1,2-hexanediol, octanediol, or natural extracts, which are commonly used in cosmetics. .

In addition, the sunscreen cosmetic composition according to the present invention is a solution, external ointment, cream, foam, nutrient lotion, softening lotion, softening water, emulsion, makeup base, essence, liquid cleaning agent, bathing agent, sunscreen cream, sun oil, suspension, emulsion It may be prepared in a formulation selected from the group consisting of liquid, paste, gel, lotion, powder, oil, powder foundation, emulsion foundation, wax foundation, patch, and spray, but is not limited thereto.

In the oil-in-water type sun-blocking cosmetic composition containing algin according to the present invention, a hydrocarbon-based oil including squalane and mineral oil as an oil component; Caprylic/Capric Triglyceride, Neopentyl Glycol Dicaprate, 2-Octyldodecyl Myristate, Isopropyl Myristerite, Isocetylethylhexanoate, Pentaerythrityl Tetraethylhexanoate, Butylene Glycol Dicapryl Ester oils including rate caprate, hexyllaurate, distearyl maleate, cetyl 2-ethylhexanoate, octyldodecanol, glyceryl triethylhexanoate, and the like; Vegetable oils including olive oil, avocado oil, jojoba oil, macadamia oil, and the like; Animal oils including lanolin and the like; And silicone oils including dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, methylctrimethicone, phenyltrimethicone, cyclomethicone, dimethicone, and the like; As sunscreen, titanium dioxide, phenylbenzimidazole sulfonic acid, ethylhexylmethoxycinnamate, ethylhexyl salicylate, bis-ethylhexyloxyphenol methoxyphenyltriazine, and diethylaminohydroxybenzoylhexylbenzoate, etc. It includes any one or more selected from the group consisting of; And as emulsifiers, glycerin monostearate, propylene glycol fatty acid ester, glycerin fatty acid ester, polyglycerol fatty acid ester, sorbitan fatty acid ester, POE (polyoxyethylene) sorbitan fatty acid ester, POE sorbit fatty acid ester, POE glycerin fatty acid ester, POE Alkyl ether, POE fatty acid ester, POE hydrogenated castor oil, POE castor oil, POE·POP (polyoxyethylene·polyoxypropylene) copolymer, POE·POP alkyl ether, polyether modified silicone, lauric acid alkanolamide, alkyl The oil-in-water type sunscreen cosmetic composition, characterized in that it contains any one or more selected from the group consisting of amine oxide, and hydrogenated soybeans, is an oil-in-water type formulation for the purposes of the present invention, which is excellent in use and contains mineral Even when in contact with an aqueous solution, the lasting power of the UV blocking effect is excellent.

In addition, the present invention comprises the steps of (s1) adding algin and a sunscreen to water and then stirring and dispersing; (s2) adding a sunscreen to the oil and then stirring to disperse it; (s3) emulsifying by adding the raw material of the (s2) step while stirring the raw material of the (s1) step; And (s4) cooling after the emulsification is finished.

In the above manufacturing method, stirring may be performed at 70 to 100°C using a disper. In the step (s3), the raw material of the step (s1) is maintained at 70 to 100°C, the homomixer is stirred at 3000 to 4000 rpm, and the raw material of the step (s2) is added to emulsify for 3 to 20 minutes. . The step (s4) can be cooled to 25 ~ 35 ℃ after the type of emulsification. The specific types and contents of the constituents used in the manufacturing method may be the same as the contents of the sunscreen cosmetic composition.

The sunscreen cosmetic composition according to the present invention is characterized in that the sunscreen factor (SPF) is 10 or more, and the sunscreen A blocking grade (PA) is plus (PA+) or more.

The oil-in-water type sun-blocking cosmetic composition of the present invention contains algin and has a remarkably excellent sun-blocking effect by making the structure of algin's formulation solid.

Particularly, the water-in-water type sun-blocking cosmetic composition of the present invention is rather excellent in sustaining the sun-blocking effect when an aqueous solution containing minerals such as sweat and seawater is encountered.

1 shows a molecular structure in which algin has a network structure as an insoluble salt when it encounters a divalent cation.

Hereinafter, examples, etc. will be described in detail to aid understanding of the present invention. However, the embodiments according to the present invention may be modified in various other forms, and the scope of the present invention should not be construed as being limited to the following examples. The embodiments of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art.

Exemplary prescription

An oil-in-water type sunscreen cosmetic composition was prepared with the ingredients and contents disclosed in Table 1 below. In the manufacturing method, each raw material in the water phase was weighed and then stirred with a disper to evenly disperse at 85°C, and each raw material in the oil phase was weighed and stirred with a disper to evenly disperse at 85°C. Thereafter, the raw material of the water phase was maintained at 85° C., the homomixer was stirred at 3500 rpm, and the raw material of the oil phase was slowly added to emulsify for 10 minutes. After the kind of emulsification, it was cooled to 30°C.

Ingredient name Content (% by weight) Award Purified water To 100 glycerin 3.00 Algin 2.00 Acrylate/C10-30 alkyl acrylate crosspolymer 0.06 1,2-hexanediol 2.50 Trisodium EDTA 0.02 Tromethamine 0.40 Titanium dioxide 2.00 Phenylbenzimidazole Sulphonic Acid 3.70 Paid part Ethylhexylmethoxycinnamate 7.00 Ethylhexyl salicylate 5.00 Bis-ethylhexyloxyphenolmethoxyphenyltriazine 2.00 Diethylaminohydroxybenzoylhexylbenzoate 0.50 Cetylethylhexanoate 1.00 Glyceryl stearate 2.00 Olive oil 0.50 Hexyldecylethylhexanoate 0.50 Cyclopentasiloxane 2.00

Experimental Example 1: Measurement result of UV protection index of algin-containing formulation

Example 1 and Comparative Example were prepared with the ingredients and contents shown in Table 2 below in the same manner as in the exemplary formulation.

Ingredient name Comparative example Example 1 Purified water To 100 To 100 glycerin 3.00 3.00 Xanthan gum 2.00 0.00 Algin 0.00 2.00 Acrylate/C10-30 alkyl acrylate crosspolymer 0.06 0.06 1,2-hexanediol 2.50 2.50 Trisodium EDTA 0.02 0.02 Tromethamine 0.40 0.40 Titanium dioxide 2.00 2.00 Phenylbenzimidazole Sulphonic Acid 3.70 3.70 Ethylhexylmethoxycinnamate 7.00 7.00 Ethylhexyl salicylate 5.00 5.00 Bis-ethylhexyloxyphenolmethoxyphenyltriazine 2.00 2.00 Diethylaminohydroxybenzoylhexylbenzoate 0.50 0.50 Cetylethylhexanoate 1.00 1.00 Glyceryl stearate 2.00 2.00 Olive oil 0.50 0.50 Hexyldecylethylhexanoate 0.50 0.50 Cyclopentasiloxane 2.00 2.00

How to measure the Sun Protection Factor is first size 25cm ² poly (methyl methacrylate) (Poly (methyl methacrylate), PMMA) plate was coated with each of 1.3mg / cm ² both the comparative examples and example 1 of the. The PMMA plate with nothing applied was used as a reference. After 15 minutes, the sun protection factor (SPF) and the protection factor of UV-A (PA) of each sample were measured with a UV blocking index measuring device (SPF-290S). The measurement results are shown in Table 3 below.

Substrate-PMMA SPF PA Comparative example 16.80±1.78 4.73±0.35 Example 1 23.71±2.58 6.44±0.45

When looking at the results shown in Table 3, it was confirmed that the SPF of Example 1 was improved by 140% and the PA was also improved by about 135% compared to the Comparative Example.

Experimental Example 2: According to the aqueous solution to be contacted UV protection index measurement result of algin-containing formulation

Examples 2 and 3 were prepared with the ingredients and contents shown in Table 4 below in the same manner as the exemplary formulation.

Ingredient name Example 2 Example 3 Purified water To 100 To 100 glycerin 3.00 3.00 Xanthan gum 0.00 0.00 Algin 2.00 2.00 Acrylate/C10-30 alkyl acrylate crosspolymer 0.06 0.06 1,2-hexanediol 2.50 2.50 Trisodium EDTA 0.02 0.02 Tromethamine 0.40 0.40 Titanium dioxide 2.00 2.00 Phenylbenzimidazole Sulphonic Acid 3.70 3.70 Ethylhexylmethoxycinnamate 7.00 7.00 Ethylhexyl salicylate 5.00 5.00 Bis-ethylhexyloxyphenolmethoxyphenyltriazine 2.00 2.00 Diethylaminohydroxybenzoylhexylbenzoate 0.50 0.50 Cetylethylhexanoate 1.00 1.00 Glyceryl stearate 2.00 2.00 Olive oil 0.50 0.50 Hexyldecylethylhexanoate 0.50 0.50 Cyclopentasiloxane 2.00 2.00 ↓ ↓ Spray after distilled water Spray after aqueous calcium chloride solution

How to measure the Sun Protection Factor is first was applied as in Example 2 and carrying 1.3mg / cm ^2, the amount of Example 3 in each PMMA plate of 25cm ² in size. The PMMA plate with nothing applied was used as a reference. 0.05 g of distilled water in Example 2 and 0.05 g of CaCl ₂ (0.5%) aqueous solution in Example 3 were uniformly sprayed. After 15 minutes, SPF and PA of each sample were measured with a UV blocking index measuring device (SPF-290S). The measurement results are shown in Table 5 below.

Substrate PMMA UV type SPF PA Comparative example Control
: Spray after distilled water 13.90±1.45 3.98±0.27 Comparative example Control
: Spray after CaCl ₂ (0.5%) 14.01±2.58 4.03±0.32 Example 2 Algin 2%
: Spray after distilled water 15.20±4.51 5.09±0.39 Example 3 Algin 2%
: Spray after CaCl ₂ (0.5%) 24.33±1.30 6.21±0.30

When looking at the results shown in Table 5, in the case of spraying distilled water and CaCl ₂ aqueous solution in the comparative examples, respectively, it was confirmed that both the SPF and PA indexes were lower than the control results of the first experiment in which distilled water and CaCl ₂ aqueous solution were not sprayed. It is judged that the cosmetic composition is diluted by moisture and the UV blocking effect is reduced.

In Example 2, compared to Example 1, the SPF level was reduced to 65% and the PA level decreased to 80%, but it was confirmed that Example 3 showed the maintenance level of both SPF and PA.

Claims (11)

Contains algin and sunscreen,
The sunscreen is more than 10% by weight to 30% by weight or less based on the total weight of the composition,
An oil-in-water type sun-blocking cosmetic composition, characterized in that the lasting power of the sun-blocking effect is enhanced when it is met with moisture containing minerals. The oil-in-water type sunscreen cosmetic composition according to claim 1, wherein the algin is contained as a thickener. The oil-in-water type sunscreen cosmetic composition of claim 1, wherein the algin is contained in an amount of 0.01 to 5% by weight based on the total weight of the composition. delete The composition contains 1 to 40% by weight of oil component, 0.01 to 10% by weight of emulsifier, more than 10% by weight of sunscreen to 30% by weight or less, 0.01 to 5% by weight of algin, and the balance of water phase component
An oil-in-water type sun-blocking cosmetic composition, characterized in that the lasting power of the sun-blocking effect is enhanced when it is met with moisture containing minerals. The oil-in-water type sunscreen cosmetic composition according to claim 5, wherein the oil component contains at least one selected from the group consisting of vegetable oil, animal oil, ester oil, hydrocarbon oil, and silicone oil. The method of claim 5, wherein the emulsifier is glycerin monostearate, propylene glycol fatty acid ester, glycerin fatty acid ester, polyglycerol fatty acid ester, sorbitan fatty acid ester, POE (polyoxyethylene) sorbitan fatty acid ester, POE sorbitic fatty acid ester, POE glycerin fatty acid ester, POE alkyl ether, POE fatty acid ester, POE hydrogenated castor oil, POE castor oil, POE·POP (polyoxyethylene·polyoxypropylene) copolymer, POE·POP alkyl ether, polyether-modified silicone, laurine An oil-in-water type sunscreen cosmetic composition comprising at least one selected from the group consisting of acid alkanolamide, alkylamine oxide, and hydrogenated soybean. The method of claim 5, wherein the sunscreen is a water-soluble sunscreen comprising phenylbenzimidazole sulfonic acid, 2-hydroxy-4-methoxybenzophenone sulfonic acid, or a mixture thereof; Ethylhexylmethoxycinnamate, ethylhexyl salicylate, bis-ethylhexyloxyphenolmethoxyphenyltriazine, diethylaminohydroxybenzoylhexylbenzoate, octocrylene, butylmethoxydibenzoylmethane, oxybenzone, octylt Organic sunscreens including riazone, menthylanthranylate, and 3,4-methylbenzylidene camphor; And any one or more selected from the group consisting of inorganic sunscreens containing titanium dioxide, zinc oxide, and iron oxide. The oil-in-water type sunscreen cosmetic composition according to claim 5, wherein the aqueous phase component comprises at least one selected from the group consisting of purified water, propylene glycol, 1,3-butylene glycol, glycerin, and sorbitol. The method of claim 1,
Hydrocarbon-based oils including squalane and mineral oil as oil components; Caprylic/Capric Triglyceride, Neopentyl Glycol Dicaprate, 2-Octyldodecyl Myristate, Isopropyl Myristerite, Isocetylethylhexanoate, Pentaerythrityl Tetraethylhexanoate, Butylene Glycol Dicapryl Ester oils including rate caprate, hexyllaurate, distearyl maleate, cetyl 2-ethylhexanoate, octyldodecanol, and glyceryl triethylhexanoate; Vegetable oils including olive oil, avocado oil, jojoba oil, and macadamia oil; Animal oils including lanolin; And silicone oils including dimethylpolysiloxane, methylphenylpolysiloxane, decamethylcyclopentasiloxane, methylctrimethicone, phenyltrimethicone, cyclomethicone, and dimethicone;
Titanium dioxide, phenylbenzimidazole sulfonic acid, ethylhexylmethoxycinnamate, ethylhexyl salicylate, bis-ethylhexyloxyphenolmethoxyphenyltriazine, and diethylaminohydroxybenzoylhexylbenzoate as sunscreens It includes any one or more selected from the group consisting of; And
As an emulsifier, glycerin monostearate, propylene glycol fatty acid ester, glycerin fatty acid ester, polyglycerol fatty acid ester, sorbitan fatty acid ester, POE (polyoxyethylene) sorbitan fatty acid ester, POE sorbit fatty acid ester, POE glycerin fatty acid ester, POE alkyl Ether, POE fatty acid ester, POE hydrogenated castor oil, POE castor oil, POE·POP (polyoxyethylene·polyoxypropylene) copolymer, POE·POP alkyl ether, polyether modified silicone, lauric acid alkanolamide, alkylamine An oil-in-water type sunscreen cosmetic composition comprising at least one selected from the group consisting of oxide, and hydrogenated soybean. (s1) adding algin and a sunscreen agent to water and then dispersing by stirring;
(s2) adding a sunscreen to the oil and then stirring to disperse it;
(s3) adding and emulsifying the raw material of the (s2) step while stirring the raw material of the (s1) step; And
(s4) cooling after completion of emulsification
Including,
The sunscreen is more than 10% by weight to 30% by weight or less based on the total weight of the composition,
A method for producing an oil-in-water type sun-blocking cosmetic composition, characterized in that the lasting power of the sun-blocking effect is enhanced when it is met with moisture containing minerals.

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