Emulsion component and oil-in-water sunscreen product and oil-in-water sunscreen lotion including the same

Abstract

The emulsion component comprises a polyglycerol ester-based emulsifier and a polyglycerol ester-based covalent agent. The polyglycerol ester-based emulsifier has a hydrophilic-lipophilic balance value greater than 10 and is formed by reacting a first polyglycerol with a degree of polymerization of 4 to 20 with a first acid. The polyglycerol ester-based covalent agent has a hydrophilic-lipophilic balance value of 10 or less and is formed by reacting a polyol with a second acid. The polyol is selected from the group consisting of glycerol and a second polyglycerol with a degree of polymerization of 2 to 10. Additionally, the weight ratio of the polyglycerol ester-based emulsifier to the polyglycerol ester-based covalent agent is 0.75 to 8. An oil-in-water emulsion sunscreen product comprising the emulsion component and an oil-in-water emulsion sunscreen lotion comprising the emulsion component are also provided.

Description

Technology Field

[0001] The present disclosure relates to an emulsion component, and an oil-in-water emulsion sunscreen product and an oil-in-water emulsion sunscreen lotion containing the same. Background Technology

[0002] CN 103585040B discloses an emulsion composition comprising a coemulsifier composed of behenyl alcohol, polyglyceryl-10 pentastearate and sodium stearoyl lactylate, and alkyl polyvinylpyrrolidone. Based on 100% by weight of the emulsion composition, the coemulsifier is present in an amount of 1.5% to 4% by weight, and the alkyl polyvinylpyrrolidone is present in an amount of 1% to 6% by weight. The emulsion composition may further contain 3% to 40% by weight of an oil / fat material, 0.1% to 4% by weight of a thickener, a preservative, and water. The emulsion composition of CN 103585040B can be used to manufacture waterproof liquid crystal cosmetics (e.g., foundation cream, sunscreen lotion and skin care lotion), and by having a covalent agent and alkyl polyvinylpyrrolidone, the emulsion composition of CN 103585040B can enable the waterproof liquid crystal cosmetic to have an excellent water-resistance effect.

[0003] However, although waterproof liquid crystal cosmetics prepared from the emulsion composition of CN 103585040B have such excellent water resistance, they do not adequately block sunlight because their UV protection factor is not sufficiently high. Furthermore, alkyl polyvinylpyrrolidone is a compound that does not meet the current market demand for natural ingredients and does not contribute to the sustainable development of the cosmetics market. The problem to be solved

[0004] As mentioned above, there is still a need for those skilled in the art to develop emulsion components that can be used in the manufacture of cosmetics containing completely natural ingredients while simultaneously possessing water resistance and a high UV protection factor. means of solving the problem

[0005] Accordingly, in a first embodiment, the present disclosure provides an emulsion component capable of mitigating at least one of the defects of the prior art. The emulsion component comprises the following:

[0006] A polyglycerol ester-based emulsifier formed by reacting a first polyglycerol having a degree of polymerization of 4 to 20 with a first acid, having a hydrophilic-lipophilic balance value greater than 10, and

[0007] A polyglycerol ester-based covalent agent having a hydrophilic-lipophilic balance value of 10 or less, formed by reacting a polyol selected from the group consisting of glycerol and a second polyglycerol having a degree of polymerization of 2 to 10 with a second acid.

[0008] The decimal weight ratio of polyglycerol ester-based emulsifiers and polyglycerol ester-based covalent agents is 0.75 to 8.

[0009] In a second aspect, the present disclosure provides an oil-in-water type sunscreen product comprising the aforementioned emulsion component.

[0010] In a third aspect, the present disclosure provides an oil-in-water emulsion sunscreen lotion comprising the emulsion component, a sunscreen agent, a fat, and water. Based on 100% by weight of the oil-in-water emulsion sunscreen lotion, the emulsion component is present in an amount of more than 3% by weight and less than or equal to 30% by weight. Effects of the invention

[0011] When the emulsion component of the present invention, comprising a specific polyglycerol ester-based emulsifier and a polyglycerol ester-based covalent agent, is used in the manufacture of cosmetics such as oil-in-water emulsion sunscreen lotion, an excellent UV protection index and excellent water resistance effect can be obtained. Specific details for implementing the invention

[0012] Where any prior art publication is referenced herein, it should be understood that such reference is not an acknowledgment that the publication forms part of the general knowledge in the relevant art field in Taiwan or any other country.

[0013] It will be clearly understood that in this text, the word "including" means "including but not limited to these," and the word "includes" has a corresponding meaning.

[0014] Unless otherwise defined, all technical and scientific terms used herein have the meanings generally understood by those skilled in the art to which this disclosure pertains. Those skilled in the art will recognize many methods and materials similar or equivalent to those described herein that can be used to practice this disclosure. In fact, this disclosure is by no means limited to the methods and materials described.

[0015] <Emulsion Components>

[0016] The present disclosure is,

[0017] A polyglycerol ester-based emulsifier formed by reacting a first polyglycerol having a degree of polymerization of 4 to 20 with a first acid, having a hydrophilic-lipophilic balance value greater than 10, and

[0018] A polyglycerol ester-based covalent agent having a hydrophilic-lipophilic balance value of 10 or less, formed by reacting a polyol selected from the group consisting of glycerol and a second polyglycerol having a degree of polymerization of 2 to 10 with a second acid.

[0019] Provides an emulsion component comprising, at this time

[0020] The decimal weight ratio of the above polyglycerol ester-based emulsifier and the above polyglycerol ester-based covalent agent is 0.75 to 8.

[0021] In certain embodiments, the decimal weight ratio of the polyglycerol ester-based emulsifier to the polyglycerol ester-based covalent agent may be 0.75 to 7. In certain embodiments, the decimal weight ratio of the polyglycerol ester-based emulsifier to the polyglycerol ester-based covalent agent may be 0.75 to 6. In certain embodiments, the decimal weight ratio of the polyglycerol ester-based emulsifier to the polyglycerol ester-based covalent agent may be 0.75 to 5. In certain embodiments, the decimal weight ratio of the polyglycerol ester-based emulsifier to the polyglycerol ester-based covalent agent may be 0.75 to 4. In certain embodiments, the decimal weight ratio of the polyglycerol ester-based emulsifier to the polyglycerol ester-based covalent agent may be 0.75 to 3. In certain embodiments, the decimal weight ratio of the polyglycerol ester-based emulsifier to the polyglycerol ester-based covalent agent may be 0.75 to 2. In certain embodiments, the decimal weight ratio of the polyglycerol ester-based emulsifier and the polyglycerol ester-based covalent agent may be 1 to 2 so that the emulsion component provides better water resistance to the oil-in-water type sunscreen cosmetic.

[0022] In certain embodiments, the polyglycerol ester-based emulsifier may have a hydrophilic-lipophilic balance value greater than 10 and less than or equal to 20. In certain embodiments, the polyglycerol ester-based emulsifier may have a hydrophilic-lipophilic balance value greater than 10 and less than 18. In certain embodiments, the polyglycerol ester-based emulsifier may have a hydrophilic-lipophilic balance value greater than 11 and less than 17.

[0023] In certain embodiments, the first polyglycerol may have a degree of polymerization of 4 to 10. In certain embodiments, the first acid may be a fatty acid or an aromatic acid. Additionally, the fatty acid may or may not include a substituent. Examples of substituents may include hydroxyl groups and amino groups, but are not limited thereto. Examples of fatty acids may include C8 to C20 fatty acids, but are not limited thereto. Additionally, examples of C8 to C20 fatty acids may include lauric acid, capric acid, and stearic acid, but are not limited thereto. In certain embodiments, the polyglycerol ester-based emulsifier may be formed by esterifying the first polyglycerol having a degree of polymerization of 4 to 20 with a fatty acid (acting as the first acid).

[0024] Examples of the above polyglycerol ester-based emulsifiers may include, but are not limited to, polyglyceryl-10 laurate, polyglyceryl-4 laurate, polyglyceryl-4 caprate, and polyglyceryl-10 stearate. In certain embodiments, the polyglycerol ester-based emulsifier may be selected from the group consisting of polyglyceryl-10 laurate having a hydrophilic-lipophilic balance value of 15.8, polyglyceryl-4 laurate having a hydrophilic-lipophilic balance value of 12.2, and polyglyceryl-4 caprate having a hydrophilic-lipophilic balance value of 16.4.

[0025] In certain embodiments, the polyglycerol ester-based covalent agent may have a hydrophilic-lipophilic balance value of 1 to 10. In certain embodiments, the polyglycerol ester-based covalent agent may have a hydrophilic-lipophilic balance value greater than 1 and less than or equal to 8. In certain embodiments, the polyglycerol ester-based covalent agent may have a hydrophilic-lipophilic balance value greater than 1 and less than 7. In certain embodiments, the polyglycerol ester-based covalent agent may have a hydrophilic-lipophilic balance value greater than 1 and less than 6. In certain embodiments, the polyglycerol ester-based covalent agent may have a hydrophilic-lipophilic balance value greater than 1 and less than 5. In certain embodiments, the polyglycerol ester-based covalent agent may have a hydrophilic-lipophilic balance value greater than 1 and less than 4.

[0026] In certain embodiments, the second polyglycerol may have a degree of polymerization of 2 to 8. In certain embodiments, the second polyglycerol may have a degree of polymerization of 2 to 6. In certain embodiments, the second polyglycerol may have a degree of polymerization of 2 to 4. In certain embodiments, the second acid may be a fatty acid or an aromatic acid. The fatty acid may or may not include a substituent. Examples of substituents may include hydroxyl groups and amino groups, but are not limited thereto. Examples of fatty acids may include C14 to C20 fatty acids, but are not limited thereto. Examples of C14 to C20 fatty acids may be stearic acid, but are not limited thereto. In certain embodiments, a polyglycerol ester-based covalent agent may be formed by esterifying a polyol with a fatty acid (acting as the second acid), wherein the polyol is selected from the group consisting of glycerol and a second polyglycerol having a degree of polymerization of 2 to 10.

[0027] Examples of the above polyglycerol ester-based covalent agents may include, but are not limited to, polyglyceryl-2 isostearate, polyglyceryl-2 diisostearate, polyglyceryl-2 triisostearate, glyceryl stearate, and polyglyceryl-3 isostearate. In certain embodiments, the polyglycerol ester-based covalent agent may be selected from the group consisting of polyglyceryl-2 isostearate having a hydrophilic-lipophilic balance value of 6.5, polyglyceryl-2 diisostearate having a hydrophilic-lipophilic balance value of 4.5, and polyglyceryl-2 triisostearate having a hydrophilic-lipophilic balance value of 3.2.

[0028] Underwater Ruins-type Sunscreen Product

[0029] In addition, the present disclosure provides an oil-in-water emulsion sunscreen product comprising the aforementioned emulsion component. Examples of the oil-in-water emulsion sunscreen product may include, but are not limited to, sun care products and sunscreen cosmetics. Examples of sun care products may include, but are not limited to, sunscreen lotions, sunscreen creams, sunscreen sprays, and CC (complete correction) creams. Examples of sunscreen cosmetics may include, but are not limited to, BB (blemish balm) creams.

[0030] Underwater Ruins-type Sunscreen Lotion

[0031] The present disclosure also provides an oil-in-water emulsion sunscreen lotion comprising the emulsion component, a sunscreen agent, a fat, and water, wherein the emulsion component is present in an amount greater than 3% by weight and less than or equal to 30% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion.

[0032] In certain embodiments, based on 100% by weight of the oil-in-water emulsion sunscreen lotion, the emulsion component may be present in an amount of more than 3% by weight and less than or equal to 7% by weight.

[0033] The above-mentioned sunscreen agent may be selected from the group consisting of chemical sunscreen agents, physical sunscreen agents, and combinations thereof. Examples of chemical sunscreen agents may include butyl methoxydibenzoyl methane and ethylhexyl methoxycinnamate, but are not limited thereto. Examples of physical sunscreen agents may include titanium dioxide and zinc oxide, but are not limited thereto. In certain embodiments, the sunscreen agent may be present in an amount of 0.1% to 50% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion. In certain embodiments, the sunscreen agent may be present in an amount of 0.1% to 30% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion. In certain embodiments, the sunscreen agent may be present in an amount of 0.1% to 20% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion.

[0034] Examples of fats may include, but are not limited to, C12 to C15 alkyl benzoates, isononyl isononanoates, and caprylic / capric triglycerides. In certain embodiments, fat may be present in an amount of 0.1% to 50% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion. In certain embodiments, fat may be present in an amount of 0.1% to 40% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion. In certain embodiments, fat may be present in an amount of 0.1% to 30% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion. In certain embodiments, fat may be present in an amount of 0.1% to 20% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion.

[0035] In certain embodiments, the oil-in-water emulsion sunscreen lotion may further comprise a moisturizer. In certain embodiments, the moisturizer may be present in an amount of 0.1% to 30% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion. In certain embodiments, the moisturizer may be present in an amount of 0.1% to 20% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion. In certain embodiments, the moisturizer may be present in an amount of 0.1% to 10% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion. Examples of moisturizers may include, but are not limited to, glycerol, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, caprylyl glycol, diglycerol, triglycerol, tetraglycerol, hexaglycerol, octaglycerol, and decaglycerol.

[0036] In certain embodiments, the oil-in-water emulsion sunscreen lotion may further comprise a thickener. Examples of thickeners may include, but are not limited to, xanthan gum, sodium alginate, silicates, hydroxyethyl cellulose, carboxymethyl cellulose, and carboxyvinyl polymers. Silicates are magnesium aluminum silicate [Veegum ® ] may be. In certain embodiments, the thickener may be present in an amount of 0.01% to 10% by weight based on 100% by weight of the oil-in-water emulsion type sunscreen lotion. In certain embodiments, the thickener may be present in an amount of 0.01% to 5% by weight based on 100% by weight of the oil-in-water emulsion type sunscreen lotion. In certain embodiments, the thickener may be present in an amount of 0.01% to 3% by weight based on 100% by weight of the oil-in-water emulsion type sunscreen lotion. In certain embodiments, the thickener may be present in an amount of 0.01% to 2% by weight based on 100% by weight of the oil-in-water emulsion type sunscreen lotion. In certain embodiments, the thickener may be present in an amount of 0.01% to 1% by weight based on 100% by weight of the oil-in-water emulsion type sunscreen lotion.

[0037] In certain embodiments, the oil-in-water emulsion sunscreen lotion may further comprise a preservative. Examples of preservatives may include, but are not limited to, organic acids, salts, polyols, formaldehyde-releasing preservatives, and halides. The polyol may be ethylhexylglycerin. The halide may be chlorphenesin. In certain embodiments, the preservative may be present in an amount of 0.001% to 10% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion. In certain embodiments, the preservative may be present in an amount of 0.001% to 5% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion. In certain embodiments, the preservative may be present in an amount of 0.001% to 3% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion. In certain embodiments, the preservative may be present in an amount of 0.001% to 2% by weight based on 100% by weight of the in-water oil-type sunscreen lotion. In certain embodiments, the preservative may be present in an amount of 0.001% to 1% by weight based on 100% by weight of the in-water oil-type sunscreen lotion.

[0038] The present disclosure will be further described by the following examples. However, it should be understood that the following examples are for illustrative purposes only and should not be construed as limiting the invention.

[0039] Examples

[0040] Manufacture of underwater ruin-type sunscreen lotion

[0041] Example 1

[0042] Butyl methoxydibenzoylmethane 2 wt%, ethylhexyl methoxycinnamate 4 wt% (both act as chemical UV blockers), titanium dioxide 6 wt% (act as a physical UV blocker), C12 to C15 alkyl benzoate 5 wt% [Patech Fine Chemicals Co., Ltd.; Model: Paester™ AB; [INCI Name: C12-C15 Alkyl Benzoate], 5% by weight of isononyl isononanoate, 5% by weight of caprylic / capric triglyceride (the above three act as fats), 4.2% by weight of polyglyceryl-10 laurate with a hydrophilic-lipophilic balance value of 15.8 (act as a polyglycerol ester-based emulsifier), and 2.8% by weight of polyglyceryl-2 triisostearate with a hydrophilic-lipophilic balance value of 3.2 (act as a polyglycerol ester-based covalent agent) were mixed at 80°C to form a first raw material composition. In addition, 62.2% by weight of water, 3% by weight of glycerol (acting as a moisturizer), 0.3% by weight of xanthan gum (acting as a thickener), and 0.5% by weight of a preservative [ACTIVON Co., Ltd.; Model: Activonol-PAFC] (containing phenoxyethanol, ethylhexylglycerin, and chlorphenesin) were mixed at 80°C to form a second raw material composition. Then, the first raw material composition was slowly added to the second raw material composition and stirred sufficiently to form a well-mixed mixture. Subsequently, the mixture was homogenized using a homogenizer at a speed of 5000 rpm for 5 minutes, and then cooled to 40°C while gently stirring to obtain an oil-in-water emulsion sunscreen lotion.

[0043] Example 2 and Comparative Examples 1 to 4

[0044] The manufacturing procedure for the oil-in-water type sunscreen lotion of Example 2 and the sunscreen lotions of Comparative Examples 1 to 4 was similar to Example 1, except that the amount of each component was changed as shown in Tables 1 and 2 below.

[0045] Content (weight%) Examples 1 2 First raw material composition chemical sunscreens Butyl methoxydibenzoylmethane 2 2 Ethylhexyl methoxycinnamate 4 4 physical sunscreen titanium dioxide 6 6 province C12 to C15 alkyl benzoates 5 5 Isononyl isononanoate 5 5 Caprylic / Capric Triglyceride 5 5 Emulsion components Polyglycerol ester-based emulsifier Polyglyceryl-10 laurate with an HLB value of 15.8 4.2 3.5 Polyglycerol ester-based covalent agent Polyglyceryl-2 triisostearate with an HLB value of 3.2 2.8 3.5 Total amount 7 7 Second raw material composition water 62.2 62.2 moisturizer Glycerol 3 3 Thickener Xanthan sword 0.3 0.3 preservatives Activonol-PAFC 0.5 0.5

[0046] Content (weight%) Comparative example 1 2 3 4 First raw material composition chemical sunscreens Butyl methoxydibenzoylmethane 2 2 2 2 Ethylhexyl methoxycinnamate 4 4 4 4 physical sunscreen titanium dioxide 6 6 6 6 province C12 to C15 alkyl benzoates 5 5 5 5 Isononyl isononanoate 5 5 5 5 Caprylic / Capric Triglyceride 5 5 5 5 Emulsion components Polyglycerol ester-based emulsifier Polyglyceryl-10 laurate with an HLB value of 15.8 7 1.8 0 6.3 Polyglycerol ester-based covalent agent Polyglyceryl-2 triisostearate with an HLB value of 3.2 0 1.2 7 0.7 Total amount 7 3 7 7 Second raw material composition water 62.2 62.2 62.2 62.2 moisturizer Glycerol 3 3 3 3 Thickener Xanthan sword 0.3 0.3 0.3 0.3 preservatives Activonol-PAFC 0.5 0.5 0.5 0.5

[0047] Characteristic evaluation

[0048] A. Determination of Hydrophilic-Lipophilic Balance (HLB) Value:

[0049] The HLB value of each polyglycerol ester-based emulsifier was calculated using the following mathematical formula I:

[0050] [Mathematical Formula I]

[0051] A=(B / C)×20

[0052] In the above formula,

[0053] A = HLB value of polyglycerol ester-based emulsifier

[0054] Amount of the first polyglycerol having a degree of polymerization of B = 4 to 20

[0055] C = Total amount of first polyglycerols with a degree of polymerization of 4 to 20 and fatty acids (acting as first acids)

[0056] The HLB value of each polyglycerol ester-based covalent agent was calculated using the following mathematical formula II:

[0057] [Mathematical Formula II]

[0058] D=(E / F)×20

[0059] In the above formula,

[0060] D = HLB value of polyglycerol ester-based covalent agents

[0061] E = Amount of glycerol or a second polyglycerol (acting as a polyol) having a degree of polymerization of 2 to 10

[0062] F = Glycerol / Total amount of second polyglycerol having a degree of polymerization in the range of 2 to 10 and fatty acid (acting as a second acid)

[0063] B. Oil Painting Analysis:

[0064] Visual inspection was performed on each oil-in-water emulsion sunscreen lotion of Examples 1 to 2 and Comparative Examples 1 to 4 to determine whether unevenness in the form of stratification or an oil slick occurred. If no stratification or an oil slick was observed, emulsification was complete (indicated by "O" in Table 3). If stratification or an oil slick was observed, emulsification was incomplete or did not occur (indicated by "X" in Table 3). The results are listed in Table 3 below.

[0065] C. Analysis of Oil Painting Types:

[0066] After dropping an appropriate amount of each oil-in-water emulsion sunscreen lotion of Examples 1 and 2 and Comparative Examples 1 to 4 into water, it was visually observed whether the oil-in-water emulsion sunscreen lotion could be uniformly dispersed in the water. If the oil-in-water emulsion sunscreen lotion could be evenly dispersed in the water, the emulsion type was an oil-in-water emulsion (O / W type). On the other hand, if lumps that could float on the surface of the water or sink to the bottom were detected (i.e., if the oil-in-water emulsion sunscreen lotion could not be dispersed in the water), the emulsion type was a water-in-oil emulsion (W / O type). The results are shown in Table 3 below.

[0067] D. Evaluation of Sun Protection Factor (SPF) and Water Resistance Retention Rate (WRR):

[0068] 39 mg to 40 mg each of the oil-in-water emulsion sunscreen lotions of Examples 1 and 2 and the sunscreen lotions of Comparative Examples 1 and 4 were individually coated onto a poly(methyl methacrylate) plate [Schonberg], and a unit area (cm²) 2Six test samples were obtained by forming a coating containing 0.7 mg to 1.3 mg of oil-in-water emulsion sunscreen lotion / sunscreen lotion per sample. Subsequently, each test sample was left in the dark for 15 minutes, and the first SPF was obtained by measuring using an ultraviolet spectrometer [Shimadzu; Model: UV-2600i] in reference to the standard protocol of ISO 24443 (2012), Cosmetics - Determination of sunscreen UVA photoprotection in vitro. Then, each test sample was immersed in 3 liters of water and stirred with a stirrer at a speed of 5000 rpm for 15 minutes, then removed from the water and the remaining residual moisture was removed. Next, the second SPF was obtained by measuring each test sample using an ultraviolet spectrometer in reference to the standard protocol of ISO 24443 (2012) mentioned above. The WRR percentage of each test sample was calculated using the following mathematical formula III:

[0069] [Mathematical Formula III]

[0070] G=[(H-1) / (I-1)]×100%

[0071] In the above formula,

[0072] G = WRR percentage

[0073] H = 2nd SPF

[0074] I = 1st SPF

[0075] The results are shown in Table 3 below.

[0076] Examples Comparative example 1 2 1 2 3 4 oil painting O O O X O O Oil painting type O / W type O / W type O / W type * W / O type O / W type SPF 1 59.5 43.29 32.12 - - 39.88 SPF 2 45.6 28.24 19.6 - - 8.8 WRR(%) 75.8 64.4 59.8 - - 20.1 * Cannot be emulsified

[0077] As shown in Table 3, by using a polyglycerol ester-based emulsifier and a polyglycerol ester-based covalent agent in the emulsion component, the oil-in-water emulsion sunscreen lotion prepared with the above emulsion component can obtain an excellent UV protection index and exhibit an excellent water resistance effect. In addition, polyglycerin-10 (acting as the first polyglycerol) and lauric acid (acting as the first acid) in polyglyceryl-10 laurate (i.e., a polyglycerol ester-based emulsifier) ​​with an HLB value of 15.8, and diglycerin (acting as the second polyglycerol) and isostearic acid (acting as the second acid) in polyglyceryl-2 triisostearate (i.e., a polyglycerol ester-based covalent agent) with a hydrophilic-lipophilic balance value of 3.2 are all natural ingredients, so the emulsion components not only meet the current market demand for natural ingredients but also contribute to the sustainable development of the cosmetics market.

[0078] In the foregoing description, numerous specific details have been presented for illustrative purposes and to provide a complete understanding of the embodiment(s). However, it will be apparent to those skilled in the art that one or more other embodiments may be practiced without these specific details. Furthermore, throughout this specification, references to “one embodiment,” “an embodiment,” or an embodiment with an ordinal number should be understood as meaning that a specific feature, structure, or characteristic may be included in the practice of this disclosure. It should also be understood that in this description, various features are sometimes grouped together in a single embodiment, in the drawings, or in the description thereof to simplify the disclosure and aid in understanding various inventive modes; this does not mean that all such features must be practiced together with all other features. That is, in any described embodiment, if the practice of one or more features or specific details does not affect the practice of another one or more features or specific details, said one or more features may be selected and practiced alone without said other one or more features or specific details. It should also be noted that one or more features or specific details from one embodiment may be practiced together with one or more features or specific details from another embodiment in the practice of the present disclosure where appropriate.

[0079] Although the present disclosure is described in relation to what are considered exemplary embodiments(s), it should be understood that the present disclosure is not limited to the disclosed embodiments(s) and is intended to include all such variations and equivalent configurations, encompassing various configurations within the scope of principles and the broadest interpretation.

Claims

Claim 1 An emulsion component comprising a polyglycerol ester-based emulsifier formed by reacting a first polyglycerol having a degree of polymerization of 4 to 20 with a first acid, wherein the hydrophilic-lipophilic balance value is greater than 10, and a polyglycerol ester-based coemulsifier formed by reacting a polyol, which is a second polyglycerol having a degree of polymerization of 2 to 10, with a second acid, wherein the weight ratio of the polyglycerol ester-based emulsifier to the polyglycerol ester-based coemulsifier is 0.75 to 8. Claim 2 In claim 1, the polyglycerol ester-based emulsifier is an emulsion component having a hydrophilic-lipophilic balance value of greater than 10 and less than or equal to 20. Claim 3 An emulsion component according to claim 1 or 2, wherein the polyglycerol ester-based covalent agent has a hydrophilic-lipophilic balance value of 1 to 10. Claim 4 An emulsion component according to claim 1 or 2, wherein the weight ratio of a polyglycerol ester-based emulsifier to a polyglycerol ester-based co-operating agent is 0.75 to 7. Claim 5 An emulsion component according to claim 1 or 2, wherein the weight ratio of a polyglycerol ester-based emulsifier to a polyglycerol ester-based co-soluble agent is 0.75 to 6. Claim 6 An oil-in-water type sunscreen product comprising an emulsion component according to Claim 1 or 2. Claim 7 In claim 6, an oil-in-water type sunscreen product selected from the group consisting of sun care products and sunscreen cosmetics. Claim 8 An oil-in-water emulsion sunscreen lotion comprising an emulsion component according to claim 1 or 2, a sunscreen agent, fat, and water, wherein the emulsion component is present in an amount of more than 3% by weight and less than or equal to 30% by weight based on 100% by weight of the oil-in-water emulsion sunscreen lotion.

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