Oil-in-water sunscreen products and oil-in-water sunscreen emulsions

Abstract

To provide an emulsion composition.SOLUTION: There is provided an emulsion composition which comprises a polyglycerol ester emulsifier having a hydrophilic-lipophilic balance value of more than 10 and a polyglycerol ester co-emulsifier having a hydrophilic-lipophilic balance value of 10 or less, where the polyglycerol ester emulsifier is a reaction product of a first reaction composition containing a polyglycerol having a degree of polymerization of 4 to 20 and an acid, the polyglycerol ester co-emulsifier is a reaction product of a second reaction composition containing a polyol and an acid, the polyol is glycerol or a polyglycerol having a degree of polymerization of 2 to 10 and the weight ratio value of the total amount of the polyglycerol ester emulsifier to the total amount of the polyglycerol ester co-emulsifier is in the range of 0.75 to 8.

Description

[Technical field]

[0001] The present invention relates to topical preparations for protection against sunlight and other radiation, and in particular to emulsion compositions and oil-in-water type sunscreen emulsions. [Background technology]

[0002] Patent Document 1 discloses a water-resistant emulsion composition containing 1.5 to 4 parts by weight of an emulsifier, 1 to 6 parts by weight of alkyl polyvinyl pyrrolidone, 3 to 40 parts by weight of an oil / fatty substance, 0.1 to 4 parts by weight of a thickener, a preservative, and water. The emulsifier includes behenyl alcohol, polyglyceryl-10 pentastearate, and sodium stearyl lactylate.

[0003] The water-resistant emulsion composition disclosed in Patent Document 1 can be applied to personal care cosmetics, and has good water-resistant effect due to the combination of emulsifier and alkyl polyvinylpyrrolidone. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Chinese Patent No. 103585040 Summary of the Invention [Problem to be solved by the invention]

[0005] However, although the water-resistant emulsion composition disclosed in Patent Document 1 has good water-resistant effect, it has a problem that it has a poor sun protection effect because of its poor sun protection factor (SPF). In addition, since alkyl polyvinylpyrrolidone is not naturally derived, it does not meet the demand of the natural cosmetics market, which is disadvantageous for the sustainable development of the cosmetics market.

[0006] Therefore, the use of completely natural ingredients while having water resistance and high sun protection is a challenge that can be further overcome by those skilled in the art.

[0007] Thus, the present invention provides emulsion compositions and oil-in-water sunscreen emulsions. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention provides: At least one polyglycerol ester emulsifier having a hydrophilic-lipophile balance number (HLB value) of more than 10; at least one polyglycerol ester co-emulsifier having a hydrophilic-lipophilic balance value of 10 or less; The polyglycerol ester emulsifier is prepared by reacting a first reaction composition comprising polyglycerol having a degree of polymerization of 4 to 20 and an acid. generate It is a thing, The polyglycerol ester co-emulsifier is a co-emulsifier formed by the reaction of a second reaction composition comprising polyols and an acid. generate It is a thing, The polyol is glycerol or a polyglycerol having a degree of polymerization of 2 to 10; The emulsion composition is characterized in that a weight ratio of the total amount of the polyglycerol ester emulsifier to the total amount of the polyglycerol ester co-emulsifier is within a range of 0.75 to 8.

[0009] The present invention also provides a method for producing a method for manufacturing a semiconductor device comprising the steps of: The above emulsion composition, At least one sunscreen; At least one oil or fat; Water, The present invention provides an oil-in-water sunscreen emulsion, characterized in that the total amount of the emulsion composition is more than 3 wt % and 30 wt % or less, taking the total amount as 100 wt %. Effect of the Invention

[0010] With the above-mentioned constitution, the emulsion composition of the present invention, when used in an oil-in-water sunscreen product or oil-in-water sunscreen composition, imparts excellent sun protection factor and water resistance to the oil-in-water sunscreen product or oil-in-water sunscreen composition due to the polyglycerol ester emulsifier and polyglycerol ester co-emulsifier in the emulsion composition.In addition, since the polyglycerol, glycerol and acid in the polyglycerol ester emulsifier and polyglycerol ester co-emulsifier are of natural origin, the emulsion composition of the present invention meets the demand of the natural cosmetics market and is favorable for the permanent development of the cosmetics market. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] <Emulsion Composition> The emulsion compositions of the present invention include at least one polyglycerol ester emulsifier and at least one polyglycerol ester co-emulsifier.

[0012] Polyglycerol ester emulsifiers have a hydrophilic lipophilic balance value greater than 10, and polyglycerol ester co-emulsifiers have a hydrophilic lipophilic balance value of 10 or less.

[0013] In addition, the weight ratio of the total amount of polyglycerol ester emulsifiers to the total amount of polyglycerol ester co-emulsifiers (i.e., weight of the total amount of polyglycerol ester emulsifiers / weight of the total amount of polyglycerol ester co-emulsifiers) is in the range of 0.75 to 8.

[0014] In some embodiments, the weight ratio of the total amount of polyglycerol ester emulsifier to the total amount of said polyglycerol ester co-emulsifier is in the range of 0.75-7.

[0015] In some embodiments, the weight ratio of the total amount of polyglycerol ester emulsifier to the total amount of the polyglycerol ester co-emulsifier is in the range of 0.75-6.

[0016] In some embodiments, the weight ratio of the total amount of polyglycerol ester emulsifier to the total amount of the polyglycerol ester co-emulsifier is in the range of 0.75-5.

[0017] In some embodiments, the weight ratio of the total amount of polyglycerol ester emulsifier to the total amount of the polyglycerol ester co-emulsifier is in the range of 0.75 to 4.

[0018] In some embodiments, the weight ratio of the total amount of polyglycerol ester emulsifier to the total amount of the polyglycerol ester co-emulsifier is in the range of 0.75 to 3.

[0019] In some embodiments, the weight ratio of the total amount of polyglycerol ester emulsifier to the total amount of the polyglycerol ester co-emulsifier is in the range of 0.75 to 2.

[0020] In some embodiments, the weight ratio of the total amount of polyglycerol ester emulsifiers to the total amount of polyglycerol ester co-emulsifiers is in the range of 1 to 2 so that the emulsion composition provides better water resistance to the oil-in-water sunscreen product or oil-in-water sunscreen emulsion.

[0021] In some embodiments, the hydrophilic lipophilic balance value of the polyglycerol ester emulsifier is greater than 10 and less than or equal to 20.

[0022] In some embodiments, the hydrophilic lipophilic balance value of the polyglycerol ester emulsifier is greater than 10 and less than 18.

[0023] In some embodiments, the hydrophilic lipophilic balance value of the polyglycerol ester emulsifier is greater than 11 and less than 17.

[0024] The polyglycerol ester emulsifier is a reaction product of a first reaction composition comprising a polyglycerol having a degree of polymerization of 4 to 20 and an acid. generate It is an object.

[0025] In some embodiments, the degree of polymerization of the polyglycerol in the first reactive composition is between 4-10.

[0026] In some embodiments, the acid in the first reactive composition can be, for example, a fatty acid or an aromatic acid.

[0027] The fatty acid may be, for example, a fatty acid that does not contain a substituent or a fatty acid that contains a substituent.

[0028] Examples of the substituent include, but are not limited to, a hydroxyl group and an amino group.

[0029] The fatty acid in the first reaction composition may be, for example, a C8 to C20 fatty acid, but is not limited thereto.

[0030] Examples of C8 to C20 fatty acids include, but are not limited to, lauric acid, decanoic acid, and stearic acid.

[0031] In some embodiments, the polyglycerol ester emulsifier is prepared by esterification of a first reaction composition comprising a polyglycerol having a degree of polymerization of 4 to 20 and a fatty acid. generate It is an object.

[0032] Examples of polyglycerol ester emulsifiers include, but are not limited to, polyglyceryl-10 laurate, polyglyceryl-4 laurate, polyglyceryl-4 caprate, or polyglyceryl-10 stearate.

[0033] An example of polyglyceryl-10 laurate is polyglyceryl-10 laurate having a hydrophilic-lipophilic balance value (hereinafter also abbreviated as HLB value) of 15.8.

[0034] An example of polyglyceryl-4 laurate is polyglyceryl-4 laurate having an HLB value of 12.2.

[0035] An example of polyglyceryl-4 caproate is polyglyceryl-4 caproate having an HLB value of 16.4.

[0036] In some embodiments, the polyglycerol ester emulsifier is at least one selected from the group consisting of polyglyceryl-10 laurate having an HLB value of 15.8, polyglyceryl-4 laurate having an HLB value of 12.2, and polyglyceryl-4 caproate having an HLB value of 16.4.

[0037] In some embodiments, the HLB value of the polyglycerol ester co-emulsifier is in the range of 1-10.

[0038] In some embodiments, the HLB value of the polyglycerol ester coemulsifier is greater than 1 and less than or equal to 8.

[0039] In some embodiments, the HLB value of the polyglycerol ester co-emulsifier is greater than 1 and less than 7.

[0040] In some embodiments, the HLB value of the polyglycerol ester co-emulsifier is greater than 1 and less than 6.

[0041] In some embodiments, the HLB value of the polyglycerol ester co-emulsifier is greater than 1 and less than 5.

[0042] In some embodiments, the HLB value of the polyglycerol ester co-emulsifier is greater than 1 and less than 4.

[0043] The polyglycerol ester coemulsifier is a product of the reaction of a second reactant composition comprising a polyol and an acid. generate The polyol is glycerol or a polyglycerol having a degree of polymerization of 2 to 10.

[0044] In some embodiments, the polyol in the second reactive composition is a polyglycerol having a degree of polymerization between 2-8.

[0045] In some embodiments, the polyol in the second reactive composition is a polyglycerol having a degree of polymerization between 2-6.

[0046] In some embodiments, the polyol in the second reactive composition is a polyglycerol having a degree of polymerization between 2-4.

[0047] In some embodiments, the acid in the second reactive composition can be, for example, an aliphatic acid or an aromatic acid.

[0048] The fatty acid may be, for example, a fatty acid that does not contain a substituent or a fatty acid that contains a substituent.

[0049] Examples of the substituent include, but are not limited to, a hydroxyl group and an amino group.

[0050] The fatty acid in the second reaction composition may be, for example, a C14 to C20 fatty acid, but is not limited thereto.

[0051] An example of a C14 to C20 fatty acid is stearic acid, but is not limited to this.

[0052] In some embodiments, the polyglycerol ester coemulsifier is a co-emulsifier that is a component of an esterification reaction of a second reaction composition comprising a polyol and a fatty acid. generate and the polyol is glycerol or a polyglycerol having a degree of polymerization of 2-10.

[0053] Examples of polyglycerol ester co-emulsifiers include, but are not limited to, polyglyceryl-2 isostearate, polyglyceryl-2 diisostearate, polyglyceryl-2 triisostearate, glyceryl stearate, or polyglycery-3 isostearate.

[0054] An example of polyglyceryl-2 isostearate is polyglyceryl-2 isostearate having an HLB value of 6.5.

[0055] An example of polyglyceryl-2 diisostearate is polyglyceryl-2 diisostearate having an HLB value of 4.5.

[0056] An example of polyglyceryl-2 triisostearate is polyglyceryl-2 triisostearate having an HLB value of 3.2.

[0057] In some embodiments, the polyglycerol ester emulsifier is at least one selected from the group consisting of polyglyceryl-2 isostearate having an HLB value of 6.5, polyglyceryl-2 diisostearate having an HLB value of 4.5, and polyglyceryl-2 triisostearate having an HLB value of 3.2.

[0058] <Uses of emulsion composition> The use of the emulsion composition of the present invention is to use the emulsion composition in an oil-in-water type sunscreen product.

[0059] Examples of the oil-in-water sunscreen products include, but are not limited to, sunscreen care products and sunscreen cosmetics.

[0060] Examples of sunscreen care products include, but are not limited to, sunscreen lotions, sunscreen creams, sunscreen sprays, and CC (complete correction) creams.

[0061] Examples of sunscreen cosmetics include, but are not limited to, BB (blemish balm) creams.

[0062] <Oil-in-water sunscreen emulsion> The oil-in-water sunscreen emulsion of the present invention comprises the emulsion composition of the present invention, at least one sunscreen agent, at least one oil, and water, and the total amount of the emulsion composition is more than 3 wt% and not more than 30 wt%, relative to 100 wt% of the total amount of the oil-in-water sunscreen emulsion.

[0063] The emulsion composition of the present invention is as described above.

[0064] In some embodiments, the total amount of the emulsion composition is more than 3 wt % and less than or equal to 7 wt %, based on 100 wt % of the total amount of the oil-in-water sunscreen emulsion.

[0065] The sunscreen may be, for example, a chemical sunscreen or a physical sunscreen.

[0066] Chemical sunscreens include, but are not limited to, butyl methoxydibenzoylmethane or ethylhexyl methoxycinnamate.

[0067] Physical sunscreens include, but are not limited to, titanium dioxide or zinc oxide.

[0068] In some embodiments, the total amount of sunscreen agent is 0.1 wt % to 50 wt %, based on 100 wt % of the total amount of the oil-in-water sunscreen emulsion.

[0069] In some embodiments, the total amount of sunscreen agent is 0.1 wt% to 30 wt%, based on 100 wt% of the total oil-in-water sunscreen emulsion.

[0070] In some embodiments, the total amount of sunscreen agent is 0.1 wt % to 20 wt %, based on 100 wt % of the total oil-in-water sunscreen emulsion.

[0071] Examples of fats and oils include, but are not limited to, C12-C15 alkyl benzoate, isononyl isononanoate, and caprilic / capric triglyceride.

[0072] In some embodiments, the total amount of oils and fats is 0.1 wt % to 50 wt %, with the total amount of the oil-in-water sunscreen emulsion being 100 wt %.

[0073] In some embodiments, the total amount of oils and fats is 0.1 wt % to 40 wt %, with the total amount of the oil-in-water sunscreen emulsion being 100 wt %.

[0074] In some embodiments, the total amount of oils and fats is 0.1 wt % to 30 wt %, with the total amount of the oil-in-water sunscreen emulsion being 100 wt %.

[0075] In some embodiments, the total amount of oils and fats is 0.1 wt % to 20 wt %, with the total amount of the oil-in-water sunscreen emulsion being 100 wt %.

[0076] In some embodiments, the oil-in-water sunscreen emulsion further comprises at least one moisturizer.

[0077] In some embodiments, the total amount of the moisturizer is 0.1 wt % to 30 wt %, with the total amount of the oil-in-water sunscreen emulsion being 100 wt %.

[0078] In some embodiments, the total amount of the moisturizer is 0.1 wt % to 20 wt %, with the total amount of the oil-in-water sunscreen emulsion being 100 wt %.

[0079] In some embodiments, the total amount of the moisturizer is 0.1 wt % to 10 wt %, where the total amount of the oil-in-water sunscreen emulsion is 100 wt %.

[0080] Examples of humectants include, but are not limited to, glycerol, propanediol, butanediol, pentanediol, hexanediol, octanediol, diglycerol, triglycerol, tetraglycerol, hexaglycerol, octaglycerol, or decaglycerol.

[0081] In some embodiments, the oil-in-water sunscreen emulsion further comprises at least one thickening agent.

[0082] Examples of thickening agents include, but are not limited to, xanthan gum, sodium alginate, silicate, hydroxyethyl cellulose, carboxy methyl cellulose, or carboxyvinyl polymer.

[0083] The silicate may be, for example, magnesium aluminum silicate.

[0084] In some embodiments, the total amount of thickener is 0.01 wt % to 10 wt %, based on 100 wt % of the total amount of the oil-in-water sunscreen emulsion.

[0085] In some embodiments, the total amount of thickener is 0.01 wt % to 5 wt %, based on 100 wt % of the total amount of the oil-in-water sunscreen emulsion.

[0086] In some embodiments, the total amount of thickener is 0.01 wt % to 3 wt %, based on 100 wt % of the total amount of the oil-in-water sunscreen emulsion.

[0087] In some embodiments, the total amount of thickener is 0.01 wt % to 2 wt %, based on 100 wt % of the total amount of the oil-in-water sunscreen emulsion.

[0088] In some embodiments, the total amount of thickener is 0.01 wt % to 1 wt %, based on 100 wt % of the total amount of the oil-in-water sunscreen emulsion.

[0089] In some embodiments, the oil-in-water sunscreen emulsion further comprises at least one preservative.

[0090] Preservatives include, but are not limited to, organic acids, salts, polyols, formaldehyde-releasing preservatives, or halides.

[0091] An example of the polyol preservative is ethylhexylglycerin.

[0092] Examples of halides include chlorphenesin.

[0093] In some embodiments, the total amount of preservatives is 0.001 wt % to 10 wt %, based on 100 wt % of the total amount of the oil-in-water sunscreen emulsion.

[0094] In some embodiments, the total amount of preservatives is 0.001 wt % to 5 wt %, based on 100 wt % of the total amount of the oil-in-water sunscreen emulsion.

[0095] In some embodiments, the total amount of preservatives is 0.001 wt % to 3 wt %, based on 100 wt % of the total amount of the oil-in-water sunscreen emulsion.

[0096] In some embodiments, the total amount of preservatives is 0.001 wt % to 2 wt %, based on 100 wt % of the total amount of the oil-in-water sunscreen emulsion.

[0097] In some embodiments, the total amount of preservatives is 0.001 wt % to 1 wt %, based on 100 wt % of the total amount of the oil-in-water sunscreen emulsion.

[0098] The present invention will now be described with reference to the following examples, which are illustrative and explanatory and should not be construed as limiting the present invention.

[0099] Example 1: Oil-in-water sunscreen emulsion The total amount of the first raw material composition and the second raw material composition was taken as 100 wt%, and the following components were used: butyl methoxydibenzoylmethane 2 wt%, ethylhexyl methoxycinnamate 4 wt%, titanium dioxide 6 wt%, alkyl benzoate mixture (manufactured by PATECH FINE CHEMICALS CO., LTD., Taiwan, model number: Paester TM The ingredients were mixed at 80°C to obtain a first raw material composition containing 5 wt% isononyl isononanoate, 5 wt% caprylic / capric triglyceride, 4.2 wt% polyglyceryl-10 laurate having an HLB value of 15.8, and 2.8 wt% polyglyceryl-2 triisostearate having an HLB value of 3.2.

[0100] The materials were mixed at 80°C to obtain a second raw material composition containing 62.2 wt% water, 3 wt% glycerol, 0.3 wt% xanthan gum, and 0.5 wt% preservative (manufactured by ACTIVON CO., LTD., USA, model number: Activonol-PAFC, ingredients: phenoxyethanol, ethylhexylglycerin, chlorphenesin).

[0101] The first raw material composition was then gradually added to the second raw material composition and mixed by stirring. After homogenization for 5 minutes using a homogenizer set at a rotation speed of 5000 rpm, the mixture was cooled to 40°C with gentle stirring to obtain an oil-in-water sunscreen emulsion.

[0102] Example 2 and Comparative Examples 1 to 4 As shown in Table 1, Example 2 and Comparative Examples 1 to 4 are the same as Example 1 except for the types and amounts of each component used.

[0103] Evaluation items Calculation of Hydrophilic Lipophilic Balance (HLB) Value: The HLB value of the polyglycerol ester emulsifier in the first reaction composition is calculated as follows: [amount of polyglycerol having a degree of polymerization of 4 to 20 used / (sum of amount of polyglycerol having a degree of polymerization of 4 to 20 used and amount of fatty acid used)]×20.

[0104] The calculation of the HLB value of the polyglycerol ester co-emulsifier in the second reaction composition is as follows: [the amount of glycerol or polyglycerol having a degree of polymerization of 2 to 10 used / (the sum of the amount of glycerol or polyglycerol having a degree of polymerization of 2 to 10 used and the amount of fatty acid used)]×20.

[0105] Emulsification analysis: The oil-in-water sunscreen emulsions of Examples 1 and 2 and the sunscreen emulsions of Comparative Examples 1 to 4 were visually observed for the presence or absence of separation into layers or uneven floating oil. "Good" indicates that there was no separation into layers or uneven floating oil, and that the emulsion was completely emulsified. "Poor" indicates that there was separation into layers or uneven floating oil, and that the emulsion was incomplete or non-emulsified.

[0106] Emulsion morphology analysis: The oil-in-water sunscreen emulsions of Examples 1 and 2 and the sunscreen emulsions of Comparative Examples 1 to 4 are dropped into water, and observed with the naked eye to see whether they are uniformly dispersed in the water.

[0107] Oil-in-water (O / W) emulsions disperse uniformly in water.

[0108] Water-in-oil (W / O) emulsions aggregate and do not disperse in water, but float on the water surface or sink to the bottom.

[0109] Measurement of sun protection factor (SPF) and water resistance retention (WRR, unit: %): 39 mg to 40 mg of each of the oil-in-water sunscreen emulsions of Examples 1 and 2 and the sunscreen liquids of Comparative Examples 1 to 4 were applied to six polymethylacrylate plates (polymethacrylates, manufactured by Schonberg, Germany), and each polymethylacrylate plate was coated with a layer of paint over a unit area (cm 2 A coating having 0.7 mg to 1.3 mg of sunscreen per coating layer was formed, thereby obtaining a number of samples.

[0110] Each sample was left to stand in a dark environment for 15 minutes, and then measured using an ultraviolet-visible spectrophotometer (Shimadzu Corporation, model number: UV-2600i) according to the international standard method for measuring the content of in vitro ultraviolet A radiation (UVA) photodamage protection sunscreen creams described in ISO (International Organization for Standardization) 24443 (2012) to obtain a first sun protection factor.

[0111] Then, each sample was immersed in 3 liters of water and stirred for 15 minutes using a stirrer set at a rotation speed of 5000 rpm. After that, each sample was taken out of the water and the remaining water in the sample was removed. Then, each sample was measured using the UV-Visible spectrophotometer to obtain a second sun protection factor.

[0112] Calculate the Water Resistance Retention Rate (WRR) using the following formula: WRR(%)=[(second sun protection factor - 1) / (first sun protection factor - 1)]×100%

[0113] [Table 1]

[0114] According to the above results, the polyglycerol ester emulsifier and polyglycerol ester co-emulsifier in the emulsion composition, when used in an oil-in-water sunscreen emulsion, provide the oil-in-water sunscreen emulsion with excellent sun protection factor and water resistance.

[0115] In addition, since the polyglycerol and fatty acid in the polyglycerol ester emulsifier and the polyglycerol ester coemulsifier are of natural origin, the emulsion composition of the present invention meets the demand of the natural cosmetics market and is advantageous for the sustainable development of the cosmetics market.

[0116] Therefore, the object of the present invention can be achieved reliably.

[0117] The above embodiment is illustratively intended to explain the principles and effects of the present invention, and is not intended to limit the present invention. Those skilled in the art may make some changes or modifications to the above embodiment without departing from the spirit and scope of the present invention. Therefore, all changes and modifications made by those skilled in the art without departing from the gist of the present invention should be considered to be within the scope of protection of the present invention. [Industrial Applicability]

[0118] The emulsion composition of the present invention is suitable for use in an oil-in-water sunscreen emulsion.

Claims

1. at least one polyglycerol ester emulsifier having a hydrophilic lipophilic balance value greater than 10; at least one polyglycerol ester co-emulsifier having a hydrophilic-lipophilic balance value of 8 or less; the polyglycerol ester emulsifier is a reaction product of a first reaction composition comprising a polyglycerol having a degree of polymerization of 4 to 20 and an acid; the polyglycerol ester coemulsifier is a reaction product of a second reaction composition comprising a polyol and an acid; The polyol is a polyglycerol having a degree of polymerization of 2 to 10; 1. An oil-in-water sunscreen product comprising an emulsion composition, the weight ratio of the total amount of said polyglycerol ester emulsifiers to the total amount of said polyglycerol ester co-emulsifiers being in the range of 0.75 to 8.

2. 2. The oil-in-water sunscreen product of claim 1, wherein the polyglycerol ester emulsifier has a hydrophilic lipophilic balance value of greater than 10 and less than or equal to 20.

3. 2. The oil-in-water sunscreen product of claim 1, wherein the polyglycerol ester co-emulsifier has a hydrophilic-lipophilic balance value of 1-10.

4. 2. The oil-in-water sunscreen product of claim 1, wherein the weight ratio of the total amount of said polyglycerol ester emulsifiers to the total amount of said polyglycerol ester co-emulsifiers is in the range of 0.75 to 7.

5. 2. The oil-in-water sunscreen product of claim 1, wherein the weight ratio of the total amount of said polyglycerol ester emulsifiers to the total amount of said polyglycerol ester co-emulsifiers is in the range of 0.75 to 6.

6. 2. The oil-in-water sunscreen product according to claim 1, wherein the oil-in-water sunscreen product is at least one selected from the group consisting of sunscreen care products and sunscreen cosmetics.

7. At least one polyglycerol ester emulsifier having a hydrophilic-lipophilic balance value of greater than 10; at least one polyglycerol ester co-emulsifier having a hydrophilic-lipophilic balance value of 8 or less; the polyglycerol ester emulsifier is a reaction product of a first reaction composition comprising a polyglycerol having a degree of polymerization of 4 to 20 and an acid; the polyglycerol ester coemulsifier is a reaction product of a second reaction composition comprising a polyol and an acid; The polyol is a polyglycerol having a degree of polymerization of 2 to 10; an emulsion composition, wherein the weight ratio of the total amount of said polyglycerol ester emulsifiers to the total amount of said polyglycerol ester co-emulsifiers is in the range of 0.75 to 8; At least one sunscreen; At least one oil or fat; Water, 1. An oil-in-water sunscreen emulsion, wherein the total amount of said emulsion composition is more than 3 wt % and not more than 30 wt %, taking the total amount as 100 wt %.

8. An oil-in-water sunscreen emulsion as described in claim 7, characterized in that the weight ratio of the total amount of said polyglycerol ester emulsifier to the total amount of said polyglycerol ester co-emulsifier is in the range of 0.75 to 6.

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