A water emulsion double-layer water agent and a preparation method thereof

Abstract

The application provides a water-emulsion double-layer water agent and a preparation method thereof. The water-emulsion double-layer water agent comprises the following components in percentage by weight: 60.9-96.19% of water, 0.1-2.5% of an emulsifier, 3-15% of a skin emollient, 0.3-10% of a humectant, 0.3-10% of a skin conditioner, 0.01-0.1% of a pH regulator and 0.1-1.5% of a preservative; wherein the emulsifier comprises di(lauroyl amidoglutamine) lysine sodium and wild soybean seed extract. The application uses di(lauroyl amidoglutamine) lysine sodium and wild soybean (GLYCINE SOJA) seed extract as the emulsifier, is free of PEG groups and has good safety. The emulsifying capacity is strong, the prepared water-emulsion double-layer water agent can maintain very good stability of the upper emulsion after standing for a long time without adding a thickening agent, and quality problems of other similar products, such as separation of oil in the upper layer, oil-water separation, emulsion coarseness and the like, are avoided.

Description

Technical Field

[0001] This application relates to the field of skincare products, and more particularly to a water-based emulsion with two layers and its preparation method. Background Technology

[0002] Aqueous solutions offer advantages such as moisturizing, hydrating, and softening the skin, making them a commonly used dosage form in cosmetics. Ordinary aqueous products are often transparent or semi-transparent, with limited formulation options, unable to include oil-soluble ingredients, and have a relatively simple appearance, failing to meet consumers' demand for novel and unique packaging. Two-layer aqueous solutions are also available, with an aqueous phase at the bottom and an oil phase at the top, requiring shaking before use. However, these lack emulsifiers, and the rapid separation of the two phases can easily lead to consumers only pouring out the top oil phase, resulting in a poor user experience.

[0003] There are also some two-layer emulsion products on the market. Chinese patent CN107929229B discloses a two-layer emulsion, in which the emulsifier includes inulin lauryl carbamate at a weight percentage of 0.1-1%, and other components are an oil phase of 5-30%, a moisturizer of 0.3-10%, and a stabilizer of 0.01-0.2%. The two-layer emulsion of this application begins to separate in 5-30 minutes and completely separates in 60-17280 minutes. It has a beautiful appearance, good spreadability, and a refreshing feel on the skin. However, some embodiments contain silicone oil, and some consumers now prefer natural ingredients and dislike cosmetics containing silicone oil. Moreover, the separation time in most embodiments is relatively long, which does not meet consumers' demands for product appearance.

[0004] Chinese patent CN105147528A discloses a two-layer essence emulsion and its preparation method. This two-layer essence emulsion has a novel and attractive appearance, achieves rapid layering, exhibits stable emulsion properties, and provides excellent moisturizing performance. The two-layer essence emulsion of this application is composed of cyclopentamethoxysilane, jojoba gum, isododecane, pentaerythritol tetra(ethylhexanoate), butylene glycol, propylene glycol, glyceryl polyether-26, glycerin, oat β-glucan, witch hazel water, phenyl polytrimethylsiloxane, phenoxyethanol, PEG-6 caprylic / capric glyceride, thickener, caprylyl glycol / ethylhexylglycerin, methylparaben, butylated hydroxytoluene, sodium hyaluronate, colorant, and water. The emulsifier used in this application is PEG-6 caprylic / capric glyceride, and the oil contains two silicone oil components. Because PEG-6 caprylic / capric glyceride contains PEG groups, it may contain dioxane residue. Dioxane can easily penetrate the skin, and the U.S. Environmental Protection Agency considers it a possible human carcinogen. Therefore, consumers dislike products that may contain dioxane.

[0005] The layered emulsions described in the aforementioned patents should all be in the form of toners, because the national standard for skin care emulsions, GB / T29665-2013, stipulates that emulsions cannot have a layered appearance, while the national standard for toners, QB / T2660-2004, allows for a multi-layered appearance.

[0006] The two-layer liquid emulsions currently on the market have the following problems: (1) They do not contain emulsifiers, and the water and oil phases separate too quickly. During use, it is easy to pour out only the upper oil phase, resulting in a poor user experience; (2) They contain silicone oil or emulsifiers containing PEG groups, which consumers are reluctant to use; (3) They contain stabilizers or thickeners, and the separation time is too long, resulting in a poor appearance; (4) They are unstable in nature, and oil may separate on the surface or the emulsion may become coarse and not delicate.

[0007] Application content

[0008] This application provides a water-emulsion bilayer aqueous solution that is free of silicone oil and thickeners, has safe ingredients, can quickly separate into layers, and has stable emulsion properties, as well as its preparation method, to solve the problems existing in related technologies. The technical solution is as follows:

[0009] In a first aspect, embodiments of this application provide a water-emulsion bilayer aqueous solution, comprising the following components by weight percentage: 60.9%–96.19% water, 0.1%–2.5% emulsifier, 3%–15% emollient, 0.3%–10% moisturizer, 0.3%–10% skin conditioning agent, 0.01%–0.1% pH adjuster, and 0.1%–1.5% preservative;

[0010] The emulsifiers include sodium di(lauramide-glutamine)lysine and wild soybean seed extract.

[0011] In one embodiment, the emollient comprises one or more of the following: isohexadecane, squalane, hydrogenated polydecene, neopentyl glycol diheptanoate, ethylhexyl palmitate, C13-16 isoparaffin, triglyceride (ethylhexanoate), cetyl ethylhexanoate, isononyl isononate, mineral oil, sea buckthorn oil, octyldodecyl alcohol, jojoba seed oil, grape seed oil, and isopropyl myristate.

[0012] In one embodiment, the humectant includes one or more of glycerin, butylene glycol, 1,3-propanediol, betaine, dipropylene glycol, glyceryl polyether-26, erythritol, methyl propylene glycol, hydroxyethyl urea, sodium polyglutamate, fructan, and trehalose.

[0013] In one embodiment, the skin conditioning agent includes one or more of the following: bisabolol, tocopherol, β-glucan, nicotinamide, biosaccharide gum-1, sodium polyaspartate, glyceryl glucoside, dipotassium glycyrrhizate, glutathione, matrine, zeaxanthin amino acids, purslane extract, carnosine, acetyl glucosamine, and aloe vera leaf juice.

[0014] In one embodiment, the pH adjuster includes one or more of triethanolamine, potassium hydroxide, arginine, sodium hydroxide, citric acid, and sodium citrate.

[0015] In one embodiment, the preservative includes one or more of methylparaben, propylparaben, chlorphenesin, phenoxyethanol, ethylhexylglycerin, hexamidine di(hydroxyethyl sulfonic acid) salt, and benzyl alcohol.

[0016] In one embodiment, the product comprises the following components: sodium di(lauramide-glutamine)lysine 0.1%–0.3%, soybean seed extract 0.2%–0.6%, isohexadecane 2%–4%, squalane 2%–4%, C13-16 isoparaffin 2%–4%, tocopherol 0.1%–0.3%, butylene glycol 1%–4%, glycerol 2%–4%, sodium polyglutamate 0.01%–0.1%, purslane extract 1%–4%, β-glucan 1%–4%, glyceryl glucoside 1%–3%, arginine 0.01%–0.05%, phenoxyethanol 0.3%–1.0%, ethylhexylglycerin 0.1%–0.5%, and the balance being water.

[0017] Secondly, embodiments of this application provide a method for preparing a water-emulsion bilayer aqueous solution, comprising:

[0018] (1) Add the raw materials of phase A in sequence: water, butanediol, glycerin, sodium polyglutamate, sodium di(lauramide-glutamine)lysine, and wild soybean seed extract to the emulsification pot, stir, heat up and keep warm;

[0019] (2) Add the B phase raw materials: isohexadecane, squalane, C13-16 isoparaffin, and tocopherol to the oil phase pot, stir and mix well, and heat up.

[0020] (3) Vacuuming is performed to draw the mixture from step (2) into the mixture from step (1), homogenizing, stirring and cooling.

[0021] (4) Add the C-phase raw materials: phenoxyethanol and ethylhexylglycerin to the emulsification pot, stir and cool;

[0022] (5) Add the raw materials of phase D: β-glucan, glyceryl glucoside, purslane extract and arginine to the emulsifying pot in sequence, stir evenly, and filter out the material after passing the inspection.

[0023] In one implementation, it includes:

[0024] (1) Add the raw materials of phase A in sequence: water, butanediol, glycerin, sodium polyglutamate, sodium di(lauramide-glutamine)lysine, and wild soybean seed extract to the emulsification pot, stir and heat to 80°C, and keep warm for 20 minutes;

[0025] (2) Add the B phase raw materials: isohexadecane, squalane, C13-16 isoparaffin, and tocopherol (vitamin E) to the oil phase pot, stir and mix well, and heat to 80°C.

[0026] (3) Vacuum the mixture from step (2) into the mixture from step (1), homogenize for 5 to 10 minutes, stir and cool to 60°C.

[0027] (4) Add the C-phase raw materials: phenoxyethanol and ethylhexylglycerin to the emulsification pot, stir and cool down to below 45°C;

[0028] (5) Add the raw materials of phase D: β-glucan, glyceryl glucoside, purslane extract and arginine to the emulsifying pot in sequence, stir evenly, and filter out the material after passing the inspection.

[0029] In one implementation, it further includes:

[0030] (6) Filling, packaging, and coding;

[0031] (7) After passing the inspection, it is put into storage.

[0032] The advantages or beneficial effects of the above technical solutions include at least the following:

[0033] 1. This application uses a compound of sodium di(lauramide-glutamine)lysine and soybean (Glycine soja) seed extract as an emulsifier, which is free of PEG groups and has good safety. It has strong emulsifying ability; even without the addition of thickeners, the resulting water-emulsion bilayer maintains excellent stability in the upper emulsion after a considerable period of standing, without exhibiting quality problems found in other similar products, such as oil precipitation, oil-water separation, or emulsion coarsening. Sodium di(lauramide-glutamine)lysine has a double-chain structure, forming a bilayer arrangement on the surface of emulsion particles. The resulting interfacial film is relatively loose and generally has low stability. The addition of soybean (Glycine soja) seed extract, with its single-chain structure, allows the molecules in the bilayer structure formed by sodium di(lauramide-glutamine)lysine to polymerize and arrange themselves, forming a denser and more compact structure, thus enhancing the strength of the interfacial film. Therefore, the emulsified particles prepared by combining sodium bis(lauramide-glutamine)lysine and soybean (GLYCINE SOJA) seed extract have smaller and more uniform particle size and better stability, which is significantly better than using sodium bis(lauramide-glutamine)lysine or soybean (GLYCINE SOJA) seed extract alone.

[0034] 2. This application does not contain silicone oil, thus meeting consumers' personalized needs. By using C13-16 isoparaffins to replace silicone oil, a smooth skin feel similar to that of silicone oil is achieved without the presence of silicone oil.

[0035] 3. The water-emulsion double-layer aqueous solution of this application, after being shaken evenly, begins to separate into two layers after standing for about 3 minutes, and completely separates into two layers after about 15 minutes, achieving rapid separation. The upper layer is an emulsion, and the lower layer is an aqueous solution. The aqueous solution is temporarily in a semi-transparent state, with a clear separation interface. After about 12 hours, the lower layer becomes a transparent and clear aqueous solution. The double-layer emulsion disclosed in Chinese Patent CN107929229B, after being shaken evenly, begins to separate into two layers after 5-30 minutes, and completely separates into two layers after 60-17280 minutes. The separation time is too long, affecting the product appearance.

[0036] 4. This water-based emulsion can replace both toner and lotion, reducing skincare steps, saving time, and fitting today's fast-paced lifestyle. It contains multiple nourishing ingredients such as β-glucan, glyceryl glucoside, and purslane extract, resulting in healthier, plumper, and more elastic skin.

[0037] 5. The formulation system of this application can add various active ingredients in aqueous or oil phases, and the flexibility of the formulation is much greater than that of conventional aqueous products, making it suitable for use as a matrix for various functional products.

[0038] 6. All ingredients in the water-based emulsion formula of this application have low safety scores on the Meili Xiuxing APP (higher scores indicate greater risk), and are all marked with a green label, making them all Meili Xiuxing green products. In recent years, many consumers have used Meili Xiuxing to check the safety of cosmetics. Meili Xiuxing's all-green products have good safety and can be used with peace of mind.

[0039] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of this application will become readily apparent from the following detailed description. Detailed Implementation

[0040] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this application. Therefore, the description is considered to be exemplary in nature and not restrictive.

[0041] In a first aspect, embodiments of this application provide a water-emulsion bilayer aqueous solution, comprising the following components by weight percentage: 60.9%–96.19% water, 0.1%–2.5% emulsifier, 3%–15% emollient, 0.3%–10% moisturizer, 0.3%–10% skin conditioning agent, 0.01%–0.1% pH adjuster, and 0.1%–1.5% preservative;

[0042] The emulsifiers include sodium di(lauramide-glutamine)lysine and wild soybean seed (Glycinesoja) extract.

[0043] The trade name for sodium bis(lauramide-glutamine)lysine is: PELLICER TM LB-10, with an active ingredient content of 10%, is a product of ASAHI KASEI FINECHEM CO., LTD. Sodium di(lauramide-glutamine)lysine is an anionic double-locking surfactant with a complex structure of multiple hydrophobic and multiple hydrophilic groups, exhibiting superior emulsifying ability. Furthermore, due to its molecular structure being similar to ceramides, it possesses skin-care benefits and can restore the skin barrier function.

[0044] The trade name for Wild Soybean (GLYCINE SOJA) seed extract is TXBIO SOYBEAN SEED EXTRACT. It contains 20% active ingredients and is a product of Xing'an Tianxing Biotechnology Co., Ltd. This Wild Soybean (GLYCINE SOJA) seed extract is produced using a low-temperature formulation process. It contains enzymatically hydrolyzed lecithin derived from non-GMO soybeans, has an HLB value of 14.9, exhibits good hydrophilicity and emulsifying properties, and is gentle and non-irritating to the skin.

[0045] In one embodiment, the emollient includes one or more of the following: isohexadecane, squalane, hydrogenated polydecene, neopentyl glycol diheptanoate, ethylhexyl palmitate, C13-16 isoparaffin, triglyceride (ethylhexanoate), cetyl ethylhexanoate, isononyl isononate, mineral oil, sea buckthorn oil, octyldodecyl alcohol, jojoba seed oil, grape seed oil, and isopropyl myristate.

[0046] In one embodiment, the humectant includes one or more of glycerin, butylene glycol, 1,3-propanediol, betaine, dipropylene glycol, glyceryl polyether-26, erythritol, methyl propylene glycol, hydroxyethyl urea, sodium polyglutamate, fructan, and trehalose.

[0047] In one embodiment, the skin conditioning agent includes one or more of the following: bisabolol, tocopherol (or vitamin E), β-glucan, nicotinamide, biosaccharide gum-1, sodium polyaspartate, glyceryl glucoside, dipotassium glycyrrhizate, glutathione, matrine, zeaxanthin amino acids, purslane extract, carnosine, acetyl glucosamine, and aloe vera leaf juice.

[0048] In one embodiment, the pH adjuster includes one or more of triethanolamine, potassium hydroxide, arginine, sodium hydroxide, citric acid, and sodium citrate.

[0049] In one embodiment, the preservative includes one or more of methylparaben, propylparaben, chlorphenesin, phenoxyethanol, ethylhexylglycerin, hexamidine di(hydroxyethyl sulfonic acid) salt, and benzyl alcohol.

[0050] In one embodiment, the product comprises the following components: sodium di(lauramide-glutamine)lysine 0.1%–0.3%, soybean seed extract 0.2%–0.6%, isohexadecane 2%–4%, squalane 2%–4%, C13-16 isoparaffin 2%–4%, tocopherol 0.1%–0.3%, butylene glycol 1%–4%, glycerol 2%–4%, sodium polyglutamate 0.01%–0.1%, purslane extract 1%–4%, β-glucan 1%–4%, glyceryl glucoside 1%–3%, arginine 0.01%–0.05%, phenoxyethanol 0.3%–1.0%, ethylhexylglycerin 0.1%–0.5%, and the balance being water.

[0051] Secondly, embodiments of this application provide a method for preparing a water-emulsion bilayer aqueous solution, the water-emulsion bilayer aqueous solution for which the preparation is carried out includes:

[0052] (1) Add the raw materials of phase A in sequence: water, butanediol, glycerin, sodium polyglutamate, sodium di(lauramide-glutamine)lysine, and wild soybean seed extract to the emulsification pot, stir, heat up and keep warm;

[0053] (2) Add the B phase raw materials: isohexadecane, squalane, C13-16 isoparaffin, and tocopherol to the oil phase pot, stir and mix well, and heat up.

[0054] (3) Vacuuming is performed to draw the mixture from step (2) into the mixture from step (1), homogenizing, stirring and cooling.

[0055] (4) Add the C-phase raw materials: phenoxyethanol and ethylhexylglycerin to the emulsification pot, stir and cool;

[0056] (5) Add the raw materials of phase D: β-glucan, glyceryl glucoside, purslane extract and arginine to the emulsifying pot in sequence, stir evenly, and filter out the material after passing the inspection.

[0057] In one embodiment, the method for preparing a water-emulsion bilayer aqueous solution includes:

[0058] (1) Add the raw materials of phase A in sequence: water, butanediol, glycerol, sodium polyglutamate, sodium di(lauramide-glutamine)lysine, and wild soybean seed extract to the emulsification pot, stir and heat to 80°C, and keep warm for 20 minutes.

[0059] (2) Add the B phase raw materials: isohexadecane, squalane, C13-16 isoparaffin, and tocopherol (vitamin E) to the oil phase pot, stir and mix well, and heat to 80°C.

[0060] (3) Vacuum the mixture from step (2) into the mixture from step (1), homogenize for 5 to 10 minutes, stir and cool to 60°C.

[0061] (4) Add the C phase raw materials: phenoxyethanol and ethylhexylglycerin to the emulsification pot, stir and cool down to below 45°C.

[0062] (5) Add the raw materials of phase D: β-glucan, glyceryl glucoside, purslane extract and arginine to the emulsifying pot in sequence, stir evenly, and filter out the material after passing the inspection.

[0063] (6) Filling, packaging, and coding.

[0064] (7) After passing the inspection, it is put into storage.

[0065] The implementation schemes of this application will be described in detail below with reference to Examples 1-3 and Comparative Examples 1-3. However, those skilled in the art will understand that the following examples are only used to illustrate this application and should not be regarded as limiting the scope of this application.

[0066] Unless otherwise specified in the examples, the procedures should be performed under standard conditions or conditions recommended by the manufacturer. Reagents or instruments whose manufacturers are not specified are all commercially available products.

[0067] Examples 1-3 and Comparative Examples 1-3 provide a water-emulsion bilayer aqueous solution. The raw material components, by weight, are shown in Table 1:

[0068] Table 1. Preparation formulations for examples and comparative examples

[0069]

[0070] The preparation method is as follows:

[0071] (1) Sequentially add the following raw materials in phase A: water, butanediol, glycerin, sodium polyglutamate, and PELLICER. TM Add LB-10 and TXBIOSOYBEAN SEED EXTRACT to the emulsification tank, stir and heat to 80°C, and keep warm for 20 minutes;

[0072] (2) Add the B phase raw materials: isohexadecane, squalane, C13-16 isoparaffin, and tocopherol (vitamin E) to the oil phase pot, stir and mix well, and heat to 80°C.

[0073] (3) Vacuum the mixture from step (2) into the mixture from step (1), homogenize for 5 to 10 minutes, stir and cool to 60°C.

[0074] (4) Add the C-phase raw materials: phenoxyethanol and ethylhexylglycerin to the emulsification pot, stir and cool down to below 45°C;

[0075] (5) Add the D phase raw materials: β-glucan, glyceryl glucoside, purslane extract and arginine to the emulsifying pot in sequence, stir evenly, and filter out the material after passing the inspection;

[0076] (6) After passing inspection, fill, package, and inkjet print;

[0077] (7) After passing the inspection, it is put into storage.

[0078] Experimental Example 1: Detection of Physicochemical Indicators

[0079] According to QB / T 2660, the physicochemical properties of the prepared water-emulsion double-layer agent were tested. The results are shown in Table 2 below:

[0080] Table 2 Results of Physicochemical Indicators

[0081]

[0082]

[0083] Test Example 2: Application Performance Testing

[0084] (1) Raw material safety

[0085] All ingredients in the water-based emulsion formulation of this application have low safety scores on the Meili Xiuxing APP and are all labeled as green, making it a fully green product of Meili Xiuxing. The safety scores of the ingredients in this application's formulation on the Meili Xiuxing APP are shown in Table 3.

[0086] Table 3 shows the ingredient safety profile of the formula in this application within the Meili Xiuxing app.

[0087]

[0088]

[0089]

[0090]

[0091] (2) Product safety testing:

[0092] Human patch tests were conducted on the skincare compositions prepared in the examples and comparative examples according to the methods described in the "Cosmetic Safety Technical Specifications (2015 Edition)".

[0093] Experimental population: 30 people in total, 30 women and 6 men, aged 21-59, 5 people in each group, who met the criteria for voluntary inclusion of the subjects.

[0094] Test method: Select an area not exceeding 50mm² 2 A suitable patch applicator with a depth of approximately 1 mm is used. Using a closed patch test method, approximately 0.020–0.025 ml of the test substance is added into the patch applicator. The patch applicator is then applied to the flexor side of the subject's forearm. After 24 hours, the test substance is removed, and skin reactions are observed at 0.5 hours, 24 hours, and 48 hours after removal. The results are recorded according to the skin reaction grading standards in the "Cosmetic Safety Technical Specifications (2015 Edition)".

[0095] Results: At three observation time points (0.5h, 24h, and 48h) after patch removal, 30 subjects scored 0 (negative reaction).

[0096] (3) Product layering speed test:

[0097] The products from the examples and comparative examples were separately placed into 100ml graduated bottles. After complete mixing of the two phases using the same stirring speed and time, the time required for re-separation was observed. The observation time was set as follows: for the first 15 minutes, every 10 seconds was one observation cycle; for the first half hour, every 1 minute was one observation cycle; from half an hour to 4 hours, every 10 minutes was one observation cycle; from 4 hours to 12 hours, every hour was one observation cycle; from 12 hours to 48 hours, every 4 hours was one observation cycle; after 48 hours, every 24 hours was one observation cycle. Data retention: the last digit was a multiple of 5. The test results are shown in Table 4.

[0098] Table 4. Results of Layered Velocity Test

[0099]

[0100] As shown in Table 4, the dual-layer essence waters described in Examples 1 to 3 began to separate into layers in about 3 minutes and completely separated in about 20 minutes, with a clear separation interface. The upper layer was an emulsion, and the lower layer was a water-based solution, which was temporarily in a semi-transparent state. After about 12 hours, the lower water-based solution became transparent. The dual-layer essence waters described in Comparative Examples 1 and 2 began to separate into layers in about 50 seconds and completely separated in about 7 minutes, with a clear separation interface. The upper layer was an emulsion, and the lower layer was a water-based solution, which was temporarily in a semi-transparent state. After about 7 hours, the lower water-based solution became transparent. Comparative Example 3 did not contain an emulsifier and was an oil-water two-phase system. It separated into layers within 10 seconds and the separation was completed in 5 minutes.

[0101] The examples added different proportions of sodium di(lauramide-glutamine)lysine and soybean (Glycine soja) seed extract; Comparative Example 1 only added soybean (Glycine soja) seed extract, Comparative Example 2 only added sodium di(lauramide-glutamine)lysine, and Comparative Example 3 was a blank control. As shown in Table 4, the test results show that the bilayer aqueous solutions prepared in Comparative Examples 1-3 separated quickly. When poured out after shaking, the solution may have already separated, resulting in only the upper layer being poured out, leading to a poor user experience. In contrast, the bilayer aqueous solutions prepared in Examples 1-3 separated at a moderate speed, exhibiting good uniformity and a better user experience when poured out after shaking. This indicates a significant synergistic effect between sodium di(lauramide-glutamine)lysine and soybean (Glycine soja) seed extract, resulting in stronger emulsifying ability, moderate separation speed, and good stability in the prepared bilayer aqueous solutions. It is significantly better than using sodium di(lauramide-glutamine) lysine or soybean (Glycinesoja) seed extract alone.

[0102] It should be understood that the numerical values ​​disclosed in the embodiments of this application are approximate values, not definitive values. Where error or experimental conditions permit, all values ​​within the error range may be included, and not limited to the specific numerical values ​​disclosed in the embodiments of this application.

[0103] The numerical ranges disclosed in the embodiments of this application are used to represent the relative amounts of components in the mixture and the ranges of temperature or other parameters listed in other method embodiments.

[0104] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0105] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0106] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A water-emulsion double-layer aqueous solution, characterized in that, By weight percentage, it comprises the following components: sodium di(lauramide-glutamine)lysine 0.1%–0.3%, soybean seed extract 0.2%–0.6%, isohexadecane 2%–4%, squalane 2%–4%, C13-16 isoparaffin 2%–4%, tocopherol 0.1%–0.3%, butylene glycol 1%–4%, glycerol 2%–4%, sodium polyglutamate 0.01%–0.1%, purslane extract 1%–4%, β-glucan 1%–4%, glyceryl glucoside 1%–3%, arginine 0.01%–0.05%, phenoxyethanol 0.3%–1.0%, ethylhexylglycerin 0.1%–0.5%, and the balance being water; The active ingredient content of the sodium di(lauramide-glutamine)lysine is 10%. The wild soybean seed extract is produced using a low-temperature formulation process and is derived from enzymatically hydrolyzed lecithin from non-GMO soybeans; the active substance content of the wild soybean seed extract is 20%.

2. A method for preparing the water-emulsion bilayer aqueous solution according to claim 1, characterized in that, include: (1) Add the raw materials of phase A in sequence: water, butanediol, glycerin, sodium polyglutamate, sodium di(lauramide-glutamine)lysine, and wild soybean seed extract to the emulsification pot, stir, heat and keep warm; (2) Add the B phase raw materials: isohexadecane, squalane, C13-16 isoparaffin, and tocopherol to the oil phase pot, stir and mix well, and heat up; (3) Vacuum the mixture from step (2) into the mixture from step (1), homogenize, stir and cool. (4) Add the C-phase raw materials: phenoxyethanol and ethylhexylglycerin to the emulsification pot, stir and cool; (5) Add the raw materials of phase D: β-glucan, glycerol glucoside, purslane extract and arginine to the emulsifying pot in sequence, stir evenly, and filter out the material after passing the inspection.

3. The method for preparing the water-emulsion double-layer aqueous solution according to claim 2, characterized in that, include: (1) Add the raw materials of phase A in sequence: water, butanediol, glycerol, sodium polyglutamate, sodium di(lauramide-glutamine)lysine, and wild soybean seed extract to the emulsification pot, stir and heat to 80°C, and keep warm for 20 minutes; (2) Add the B phase raw materials: isohexadecane, squalane, C13-16 isoparaffin and tocopherol to the oil phase pot, stir and mix well, and heat to 80°C; (3) Vacuum the mixture from step (2) into the mixture from step (1), homogenize for 5 to 10 minutes, stir and cool to 60°C; (4) Add the C-phase raw materials: phenoxyethanol and ethylhexylglycerin to the emulsification pot, stir and cool down to below 45°C; (5) Add the raw materials of phase D: β-glucan, glycerol glucoside, purslane extract and arginine to the emulsifying pot in sequence, stir evenly, and filter out the material after passing the inspection.

4. The method for preparing the water-emulsion double-layer aqueous agent according to claim 2 or 3, characterized in that, Also includes: (6) Filling, packaging, and coding; (7) After passing the inspection, it shall be put into storage.

Images