Gel latex spray and preparation method thereof

Abstract

The invention discloses gel latex spray and a preparation method thereof. The gel latex spray comprises a water-based thickener, an emulsifier, a water-based solvent, a pH regulator, an active component, a humectant, an oily solvent and water. The gel latex spray disclosed by the invention shows an excellent spraying atomization effect in a use process, and meanwhile, good emulsion stability is kept.

Description

Technical Field

[0001] This invention belongs to the field of cosmetics, specifically relating to a gel emulsion spray and its preparation method. Background Technology

[0002] With the increasing demand for personal care products, lotion sprays have gained a significant position in the cosmetics and skincare market due to their ease of use and portability. A lotion spray is a product that uses a specific spray device to atomize lotion into fine mist particles, which can be evenly distributed on the skin surface, providing moisturizing and repairing effects.

[0003] Currently, there are many types of lotion spray products on the market, among which moisturizing and repairing lotion sprays are quite common. For example, CN109528579A discloses a moisturizing and repairing lotion spray and its preparation method. This lotion spray is composed of emulsifiers, emollients, preservatives, functional additives, anti-inflammatory agents, moisturizers, chelating agents, thickeners, pH adjusters, and fragrances, and has good moisturizing and repairing effects. CN109223669A provides a spray-type moisturizing body lotion. By adding a flu modifier and optimizing its content, it meets the spray effect required for spray-type body lotions, enabling the body lotion to be sprayed evenly and achieve a long-lasting refreshing and moisturizing effect.

[0004] In the formulation design of emulsion sprays, the selection and use of thickeners have a significant impact on product performance. CN114632028A discloses a lifting and firming face cream that uses a thickener system composed of carbomer, sodium polyacrylate grafted starch, and xanthan gum, giving the product good moisturizing ability and lifting and firming effects. CN114668688A, on the other hand, uses ammonium acryloyl dimethyl taurate / VP copolymer as a thickener, enabling the BB cream to achieve a thickening effect while maintaining a refreshing feel.

[0005] Emulsifiers also play a crucial role in emulsion sprays, enabling the aqueous and oil phases to form a stable emulsion system. CN112274448A discloses a spray foundation in which, by adjusting the ratio of the aqueous and oil phases and adding an appropriate emulsifier, the spray foundation achieves both the lightweight, easy-to-apply, and non-sticky effects of a liquid foundation, as well as moisturizing and concealing effects.

[0006] However, existing emulsion spray products still have some technical problems. Traditional emulsion sprays, in order to achieve a good atomization effect, typically control the product viscosity during formulation design. This leads to poor stability of the emulsion system, making it prone to layering and demulsification. At the same time, low-viscosity emulsion sprays often produce less than ideal atomization during use, failing to form uniform and fine mist particles, affecting the user experience and efficacy of the product. Therefore, existing emulsion spray formulations struggle to simultaneously achieve stability and good spray performance, particularly lacking systematic optimization in the proportions of thickeners, emulsifiers, water-based solvents, and oil-based solvents.

[0007] Therefore, there is an urgent need to develop a gel emulsion spray. By optimizing the ratio and preparation process of water-based thickeners, emulsifiers, pH adjusters, active ingredients, humectants, water-based solvents, and oil-based solvents, the technical problems of poor stability and poor atomization effect of traditional emulsion sprays can be solved, thereby improving the product's performance and user experience. Summary of the Invention

[0008] To address the problems of poor emulsion stability and inadequate atomization caused by the low viscosity of traditional emulsion sprays, and to improve the stability and atomization effect of emulsion sprays, this invention provides a gel emulsion spray and its preparation method.

[0009] The present invention solves the above-mentioned technical problems through the following technical solutions:

[0010] The present invention provides a gel emulsion spray comprising an aqueous thickener, an emulsifier, an aqueous solvent, a pH adjuster, an active ingredient, a humectant, an oil-based solvent, and water;

[0011] The aqueous thickener is selected from one or more of the following: acrylate / behenol polyether-25 methacrylate copolymer, acrylate / C10-30 alkanol acrylate crosspolymer, hydroxypropyl methylcellulose, and cellulose.

[0012] The emulsifier is selected from one or more of sorbitan polyether-30 tetraoleate, sorbitan sesquioleate, polyglycerol-3 polyricinoleate, and polysorbate-20;

[0013] The aqueous thickener is 0.1-1.5 parts by weight, and the emulsifier is 0.1-3.0 parts by weight.

[0014] In one embodiment, the aqueous thickener is preferably an acrylate / behenol polyether-25 methacrylate copolymer and / or an acrylate / C10-30 alkanol acrylate crosslinker.

[0015] In one embodiment, the aqueous thickener may be 0.5-0.6 parts by weight.

[0016] In one embodiment, the emulsifier may be sorbitan polyether-30 tetraoleate or sorbitan sesquioleate.

[0017] In one embodiment, the emulsifier may be 1-3 parts by weight, for example 2-3 parts by weight.

[0018] In one embodiment, the aqueous solvent may be a conventional aqueous solvent in the art, such as a polyol solvent, or one, two, or three of propylene glycol, butanediol, and 1,3-propanediol.

[0019] In one embodiment, the aqueous solvent may be 1-30 parts by weight, for example 3-20 parts by weight.

[0020] In one embodiment, the pH adjuster may be a conventional pH adjuster in the art, such as one or more of amino alcohols, alkali metal hydroxides, and alkali metal citrates; the amino alcohol is, for example, tromethamine; the alkali metal hydroxide is, for example, sodium hydroxide; and the alkali metal citrate is, for example, sodium citrate.

[0021] In one embodiment, the pH adjuster may be 0.01-1 parts by weight, for example 0.1-0.5 parts by weight, or for example 0.1-0.3 parts by weight.

[0022] In one embodiment, the active ingredient may be a conventional active ingredient in the art, such as a vitamin compound and / or a salt of glycosaminoglycans; the vitamin compound may be one or more of vitamin C, vitamin C derivatives, and nicotinamide; the glycosaminoglycan salt may be sodium hyaluronate.

[0023] In one embodiment, the active ingredient may be 0.1-10 parts by weight, for example 1-8 parts by weight, or for example 1-5 parts by weight.

[0024] In one embodiment, the humectant may be a conventional humectant in the art, such as one or more of polyol solvents, urea compounds, and glycosaminoglycans; the polyol may be, for example, propylene glycol or glycerin; the urea compound may be, for example, urea; and the glycosaminoglycan may be, for example, hyaluronic acid.

[0025] In one embodiment, the humectant may be 0.1-20 parts by weight, for example 5-15 parts by weight, or even 5-10 parts by weight.

[0026] In one embodiment, when the humectant is a mixture of diol and triol, the mass ratio of the diol to the triol is 1:(1-3), for example, 1:2.

[0027] In one embodiment, the oily solvent may be a conventional oily solvent in the art, such as one or more of isoalkanes, silicone oils, mineral oils, animal oils, and vegetable oils; the isoalkanes may be, for example, isododecane; the animal oils may be, for example, squalane; and the vegetable oils may be, for example, sunflower seed oil.

[0028] In one embodiment, the oily solvent may be 1-10 parts by weight, for example 3-10 parts by weight, or for example 3-5 parts by weight.

[0029] In one embodiment, the gel emulsion spray further includes a preservative; the preservative may be a conventional preservative in the art, such as one or more combinations of aromatic alcohols and unsaturated fatty acid salts; the aromatic alcohol is, for example, phenoxyethanol; the unsaturated fatty acid salt is, for example, potassium sorbate;

[0030] In one embodiment, the preservative may be 0.1-1 parts by weight, for example, 0.5 parts by weight.

[0031] In one embodiment, the gel emulsion spray further includes an antioxidant; the antioxidant may be a conventional antioxidant in the art, such as tocopherols, phenolic antioxidants, or a combination of tocopherols and phenolic antioxidants; the tocopherols may be, for example, vitamin E; the phenolic antioxidants may be, for example, butylated hydroxytoluene (BHT) or butylated hydroxyanisole (BHA).

[0032] In one embodiment, the antioxidant may be 0.01-1 parts by weight, for example 0.05-0.2 parts by weight, or even 0.2 parts by weight.

[0033] In one embodiment, the gel emulsion spray is purified water.

[0034] In one embodiment, the gel emulsion spray comprises the following components:

[0035] Water-based thickener: 0.1-1.5 parts by weight

[0036] Aqueous solvent: 1-30 parts by weight

[0037] Emulsifier: 0.1-3 parts by weight

[0038] pH adjuster: 0.01-1 parts by weight

[0039] Active ingredient: 0.1-10 parts by weight

[0040] Moisturizer: 0.1-20 parts by weight

[0041] Oily solvent: 1-10 parts by weight

[0042] Water: 24.5-96.69 parts by weight.

[0043] In one embodiment, the gel emulsion spray can be any of the following:

[0044] Option 1,

[0045] Water-based thickener: 0.6 parts by weight

[0046] Aqueous solvent: 5 parts by weight

[0047] Emulsifier: 2 parts by weight

[0048] pH adjuster: 0.3 parts by weight

[0049] Active ingredient: 3 parts by weight

[0050] Moisturizer: 5 parts by weight

[0051] Oily solvent: 5 parts by weight

[0052] Water: 79.1 parts by weight.

[0053] Option 2,

[0054] Water-based thickener: 0.5 parts by weight

[0055] Aqueous solvent: 5 parts by weight

[0056] Emulsifier: 2 parts by weight

[0057] pH adjuster: 0.3 parts by weight

[0058] Active ingredient: 3 parts by weight

[0059] Moisturizer: 5 parts by weight

[0060] Oily solvent: 5 parts by weight

[0061] Water: 79.2 parts by weight.

[0062] Option 3,

[0063] Water-based thickener: 0.6 parts by weight

[0064] Aqueous solvent: 3 parts by weight

[0065] Emulsifier: 2 parts by weight

[0066] pH adjuster: 0.3 parts by weight

[0067] Active ingredient: 3 parts by weight

[0068] Moisturizer: 5 parts by weight

[0069] Oily solvent: 5 parts by weight

[0070] Water: 81.1 parts by weight.

[0071] Option 4

[0072] Water-based thickener: 0.6 parts by weight

[0073] Aqueous solvent: 5 parts by weight

[0074] Emulsifier: 3 parts by weight

[0075] pH adjuster: 0.3 parts by weight

[0076] Active ingredient: 3 parts by weight

[0077] Moisturizer: 5 parts by weight

[0078] Oily solvent: 5 parts by weight

[0079] Water: 78.1 parts by weight.

[0080] Option 5,

[0081] Water-based thickener: 0.6 parts by weight

[0082] Aqueous solvent: 5 parts by weight

[0083] Emulsifier: 2 parts by weight

[0084] pH adjuster: 0.2 parts by weight

[0085] Active ingredient: 3 parts by weight

[0086] Moisturizer: 5 parts by weight

[0087] Oily solvent: 5 parts by weight

[0088] Water: 79.2 parts by weight.

[0089] Option 6

[0090] Water-based thickener: 0.6 parts by weight

[0091] Aqueous solvent: 5 parts by weight

[0092] Emulsifier: 2 parts by weight

[0093] pH adjuster: 0.3 parts by weight

[0094] Active ingredient: 1 part by weight

[0095] Moisturizer: 5 parts by weight

[0096] Oily solvent: 5 parts by weight

[0097] Water: 81.1 parts by weight.

[0098] Option 7,

[0099] Water-based thickener: 0.6 parts by weight

[0100] Aqueous solvent: 5 parts by weight

[0101] Emulsifier: 2 parts by weight

[0102] pH adjuster: 0.3 parts by weight

[0103] Active ingredient: 3 parts by weight

[0104] Moisturizer: 6 parts by weight

[0105] Oily solvent: 5 parts by weight

[0106] Water: 78.1 parts by weight.

[0107] Option 8

[0108] Water-based thickener: 0.6 parts by weight

[0109] Aqueous solvent: 5 parts by weight

[0110] Emulsifier: 2 parts by weight

[0111] pH adjuster: 0.3 parts by weight

[0112] Active ingredient: 3 parts by weight

[0113] Moisturizer: 5 parts by weight

[0114] Oily solvent: 3 parts by weight

[0115] Water: 81.1 parts by weight.

[0116] Option 9,

[0117] Water-based thickener: 0.6 parts by weight

[0118] Aqueous solvent: 20 parts by weight

[0119] Emulsifier: 2 parts by weight

[0120] pH adjuster: 0.1 parts by weight

[0121] Active ingredient: 5 parts by weight

[0122] Moisturizer: 10 parts by weight

[0123] Oily solvent: 5 parts by weight

[0124] Water: 50 parts by weight.

[0125] Option 10

[0126] Water-based thickener: 0.6 parts by weight

[0127] Aqueous solvent: 20 parts by weight

[0128] Emulsifier: 2 parts by weight

[0129] pH adjuster: 0.1 parts by weight

[0130] Active ingredient: 5 parts by weight

[0131] Moisturizer: 10 parts by weight

[0132] Oily solvent: 5 parts by weight

[0133] Preservative: 0.5 parts by weight

[0134] Water: 50 parts by weight.

[0135] Option 11

[0136] Water-based thickener: 0.6 parts by weight

[0137] Aqueous solvent: 20 parts by weight

[0138] Emulsifier: 2 parts by weight

[0139] pH adjuster: 0.1 parts by weight

[0140] Active ingredient: 5 parts by weight

[0141] Moisturizer: 10 parts by weight

[0142] Oily solvent: 5 parts by weight

[0143] Antioxidant: 0.2 parts by weight

[0144] Water: 50 parts by weight.

[0145] In Schemes 1 to 11, the aqueous thickener is preferably an acrylic (ester) / behenol polyether-25 methacrylate copolymer and / or an acrylic (ester) / C10-30 alkanol acrylate crosslinking polymer;

[0146] The emulsifier is preferably sorbitan polyether-30 tetraoleate or sorbitan sesquioleate;

[0147] The aqueous solvent is preferably a polyol solvent;

[0148] The pH adjuster is preferably one or more of amino alcohols, alkali metal hydroxides, and alkali metal citrates;

[0149] The active ingredient is preferably a salt of vitamin compounds and / or glycosaminoglycans;

[0150] The humectant is preferably one or more of polyols, urea compounds, and glycosaminoglycans;

[0151] The oily solvent is preferably one or more of isoalkanes, silicone oil, mineral oil, animal oil, and vegetable oil.

[0152] This invention also provides a method for preparing a gel emulsion spray, which includes the following steps:

[0153] Option 1: Mix water-based thickener, active ingredient, water-based solvent and water to obtain an aqueous phase; mix emulsifier and oil-based solvent to obtain an oil phase; mix the aqueous phase and oil phase and add humectant and pH adjuster to obtain the gel emulsion spray.

[0154] Option 2: Mix the aqueous thickener and emulsifier to obtain phase A; mix phase A, pH adjuster, aqueous solvent, active ingredient, humectant, oil solvent and water to obtain the gel emulsion spray.

[0155] The types and amounts of water-based thickeners, active ingredients, water-based solvents, emulsifiers, and oil-based solvents in Schemes 1 and 2 are as described in the previous one.

[0156] In one embodiment, the preparation method is any of the following:

[0157] Option 1:

[0158] S1. Add the water-based thickener to water and stir to dissolve to obtain phase A;

[0159] S2. Add the active ingredient and aqueous solvent to water and stir to dissolve. Then add phase A to obtain phase B.

[0160] S3. Emulsifier and oily solvent are mixed and stirred to obtain phase C;

[0161] S4. Add phase C to phase B, homogenize, and obtain phase D;

[0162] S5. Add the humectant to phase D and stir until well mixed to obtain phase F;

[0163] S6. Add pH adjuster to phase F to adjust pH;

[0164] S7. Add water to bring the volume to 100%;

[0165] S8. Filtering and filling.

[0166] Option 2:

[0167] S1. Mix the water-based thickener and emulsifier, homogenize, and obtain phase A;

[0168] S2. Dissolve the pH adjuster in water, add it to phase A to adjust the pH, homogenize, and obtain phase B;

[0169] S3. Mix the aqueous solvent, active ingredient, moisturizer and water sequentially, homogenize to obtain phase C;

[0170] S4. Add phase C to phase B, homogenize, and obtain phase D;

[0171] S5. Add an oily solvent to phase D, homogenize, and obtain the gel emulsion spray.

[0172] Preferably, the preparation method satisfies one or more of the following conditions:

[0173] (1) In step S1 of the above scheme 1, the method of adding can be slow addition;

[0174] (2) In step S1 of the above scheme, the stirring temperature can be 15-35℃, for example, room temperature;

[0175] (3) In step S3 of the above scheme 1, the stirring temperature can be 25-50℃, for example 40℃;

[0176] (4) In step S3 of scheme 1, the stirring time can be 3-20 minutes, for example 10 minutes;

[0177] (5) In step S4 of scheme 1, the addition method can be slow addition;

[0178] (6) In step S4 of scheme 1, the homogenization time can be 3-20 minutes, for example 5 minutes;

[0179] (7) In step S4 of scheme 1, the homogenization speed can be 1000-10000 rpm, for example 6000 rpm;

[0180] (8) In step S5 of the above scheme 1, the stirring time can be 3-30 minutes, for example 10 minutes;

[0181] (9) In step S6 of scheme 1, the pH adjustment endpoint is 5.5-7.5, for example 5.5;

[0182] (10) In step S8 of the above scheme 1, the filter cloth used for filtration can be 200-400 mesh, for example 300 mesh;

[0183] (11) In step S1 of scheme 2, the homogenization speed can be 500-800 rpm;

[0184] (12) In step S1 of scheme 2, the homogenization time can be 3-20 minutes, for example 10 minutes;

[0185] (13) In step S1 of scheme 2, the temperature of homogenization can be 25-30℃;

[0186] (14) In step S2 of scheme 2, the addition method can be slow addition;

[0187] (15) In step S2 of the above scheme 2, the pH adjustment endpoint is 5.5-7.5;

[0188] (16) In step S2 of the above scheme 2, the homogenization speed can be 600-1000 rpm;

[0189] (17) In step S2 of the above scheme 2, the homogenization time can be 3-20 minutes;

[0190] (18) In step S2 of the above scheme 2, the temperature of homogenization can be 20-25℃;

[0191] (19) In step S3 of scheme 2, the homogenization speed can be 400-700 rpm;

[0192] (20) In step S3 of scheme 2, the homogenization time can be 3-20 minutes;

[0193] (21) In step S3 of scheme 2, the temperature of homogenization can be 25-30℃;

[0194] (22) In step S4 of scheme 2, the addition method can be slow addition;

[0195] (23) In step S4 of scheme 2, the homogenization speed can be 800-1200 rpm;

[0196] (24) In step S4 of scheme 2, the homogenization time can be 3-20 minutes;

[0197] (25) In step S4 of scheme 2, the temperature of homogenization can be 25-30℃;

[0198] (26) In step S5 of scheme 2, the addition method can be slow addition;

[0199] (27) In step S5 of scheme 2, the homogenization speed can be 1000-10000 rpm;

[0200] (28) In step S5 of scheme 2, the homogenization time can be 3-20 minutes;

[0201] (29) In step S5 of the above scheme 2, the temperature of homogenization can be 25-30℃.

[0202] The present invention also provides a gel emulsion spray prepared by the gel emulsion spray preparation method described above.

[0203] The present invention also provides a gel emulsion spray, which is composed of an aqueous thickener, an emulsifier, an aqueous solvent, a pH adjuster, an active ingredient, a humectant, an oil solvent, and water; or, it is composed of an aqueous thickener, an emulsifier, an aqueous solvent, a pH adjuster, an active ingredient, a humectant, an oil solvent, water, and an antioxidant; or, it is composed of an aqueous thickener, an emulsifier, an aqueous solvent, a pH adjuster, an active ingredient, a humectant, an oil solvent, water, and a preservative.

[0204] The present invention also provides the application of the gel emulsion spray as described above in cosmetics for moisturizing or repairing the skin.

[0205] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0206] The reagents and raw materials used in this invention are all commercially available.

[0207] The significant advantages of this invention are: through a specific formulation and preparation process, it solves the technical problem of poor stability in traditional emulsion sprays. Compared with existing technologies, this invention uses a specific ratio of water-based thickener to emulsifier, enabling the emulsion spray to maintain good atomization while exhibiting better stability, significantly improving the user experience. Detailed Implementation

[0208] The present invention is further illustrated below by way of embodiments, but the invention is not limited to the scope of the embodiments described herein. Experimental methods in the following embodiments that do not specify specific conditions were performed according to conventional methods and conditions, or as selected according to the product instructions.

[0209] Example 1

[0210] The specific steps of the preparation method are as follows:

[0211] Raw material preparation:

[0212] The aqueous thickener is selected from 0.4 g of acrylate / sorbitol polyether-25 methacrylate copolymer, 0.2 g of acrylate / C10-30 alkanol acrylate crosspolymer, 5 g of propylene glycol as aqueous solvent, 2 g of sorbitol polyether-30 tetraoleate as emulsifier, 0.3 g of tromethamine as pH adjuster, 3 g of vitamin C derivative as active ingredient, 5 g of glycerin as humectant, 5 g of isododecane as oil solvent, and 79.1 g of purified water.

[0213] Preparation steps:

[0214] S1: Aqueous phase preparation: The aqueous thickener acrylate / behenol polyether-25 methacrylate copolymer and acrylate / C10-30 alkanol acrylate crosspolymer were slowly added to 6 g of purified water and stirred at room temperature until completely dissolved to form a uniform colloidal solution.

[0215] S2: Dissolving the active ingredient: Add the active ingredient, vitamin C derivative, and the aqueous solvent, propylene glycol, to 40 g of purified water and stir until completely dissolved; then add S2 to S1.

[0216] S3: Oil phase preparation: The emulsifier sorbitol polyether-30 tetraoleate and the oily solvent isododecane are mixed and stirred at 40°C for 10 minutes to form a uniform oil phase;

[0217] S4: Emulsification process: Under continuous stirring, the oil phase is slowly added to the aqueous phase, the stirring speed is controlled at 6000 rpm, and the emulsification time is 5 minutes to form an emulsion;

[0218] S5: Add excipients: Add the moisturizing agent glycerin to the lotion and continue stirring for 10 minutes to mix thoroughly;

[0219] S6: pH adjustment: Add tromethorphan to adjust the pH to 5.5;

[0220] S7: Make up the volume with water: Add 33.1 g of purified water and stir well;

[0221] S8: Filtration and Filling: Filter the prepared gel emulsion spray through a 300 mesh filter cloth, and then fill it into a spray bottle and seal it for storage.

[0222] Example 2

[0223] Following the steps and conditions of Example 1, the aqueous thickeners in step S1, namely acrylate / behenol polyether-25 methacrylate copolymer and acrylate / C10-30 alkanol acrylate crosslinker, were replaced with acrylate / C10-30 alkanol acrylate crosslinker at a dosage of 0.5 g. The acrylate / C10-30 alkanol acrylate crosslinker exhibits excellent thickening properties, providing good viscosity at lower dosages, resulting in finer mist particles during spraying.

[0224] Example 3

[0225] Following the steps and conditions of Example 1, the aqueous solvent propylene glycol in step S2 was replaced with 1,3-butanediol, and the amount used was 3 g. 1,3-Butanediol not only has good solubility but also provides additional moisturizing effects, making the skin feel more comfortable after using the product.

[0226] Example 4

[0227] Following the steps and conditions of Example 1, the emulsifier sorbitan polyether-30 tetraoleate in step S3 was replaced with sorbitan sesquioleate at a dosage of 3g. This emulsifier provides a more stable emulsification effect, enabling the product to maintain good stability under different temperature conditions.

[0228] Example 5

[0229] Following the steps and conditions of Example 1, the pH adjuster tromethamine in step S6 was replaced with sodium citrate at a dosage of 0.2 g. Sodium citrate, as a mild pH adjuster, can maintain the product's pH value between 5.0 and 5.5, which is closer to the physiological pH value of the skin.

[0230] Example 6

[0231] Following the steps and conditions of Example 1, the active ingredient, vitamin C derivative, in step S2 was replaced with sodium hyaluronate at a dosage of 1 g. Sodium hyaluronate has excellent moisturizing effects and biocompatibility, and can form a moisturizing film on the skin surface to lock in moisture for a long time.

[0232] Example 7

[0233] Following the steps and conditions of Example 1, the moisturizing agent glycerin in step S5 was replaced with a mixture of propylene glycol and glycerin in a ratio of 1:2, with a total amount of 6 g. This mixed moisturizer provides multi-layered moisturizing effects, offering both immediate and long-lasting hydration.

[0234] Example 8

[0235] Following the steps and conditions of Example 1, the oily solvent isododecane in step S3 was replaced with squalane, at a dosage of 3g. Squalane has good skin affinity, can be rapidly absorbed by the skin, and does not leave a greasy feeling.

[0236] Example 1-8 Finished Product Testing:

[0237] The prepared gel-emulsion spray product is semi-transparent milky white in appearance. When sprayed, it forms fine and uniform mist particles that quickly form a thin gel film on the skin. The product has a pH value of 5.5, which is close to the physiological pH value of the skin, and will not irritate the skin during use. The product has a good moisturizing effect, reducing transepidermal water loss by more than 35% after use, and this effect lasts for more than 8 hours. The product has good stability, showing no separation or discoloration when stored within the range of 4-45℃ for 3 months.

[0238] Moisturizing test method:

[0239] Equipment: Corneometer CM825 (Skin Moisture Tester)

[0240] Test method: The test area is 3cm×3cm. The test sample is applied once at a dosage of (2.0±0.1)mg / cm2. The sample is evenly applied to the test area using a latex finger cot.

[0241] Before use (T0h), 1 hour after use (T1h), and 2 hours after use (T2h), the skin moisture content of the stratum corneum was measured using a Corneometer CM825. The higher the Corneometer value, the higher the skin moisture content of the stratum corneum.

[0242] Example 9

[0243] The specific steps of the preparation method are as follows:

[0244] Step 1: Prepare Phase A

[0245] Take 0.6 g of water-based thickener acrylate / sorbitol polyether-25 methacrylate copolymer and 2.0 g of emulsifier sorbitol polyether-30 tetraoleate. Mix the two evenly, control the stirring speed at 500-800 rpm, stir for 10 minutes, and keep the temperature at 25-30℃ to obtain a uniform A-phase mixture.

[0246] Step 2: Preparation of Phase B

[0247] Dissolve 0.1 g of pH adjuster in 10 g of purified water at a temperature of 20-25°C and a stirring speed of 300-500 rpm. After complete dissolution, slowly add the solution to phase A obtained in step one, increasing the stirring speed to 600-1000 rpm and stirring for 5-10 minutes until homogeneous to obtain phase B. Sodium hydroxide is preferred as the pH adjuster to maintain the final product's pH between 5.5 and 7.5.

[0248] Step 3: Preparation of C phase

[0249] Take 20 g of aqueous solvent, 5 g of active ingredient, 10 g of humectant, and 40 g of purified water, and add them sequentially to a reaction vessel. Maintain a stirring speed of 400-700 rpm and a temperature of 25-30℃ for 5-10 minutes until all components are fully mixed and homogeneous, yielding phase C. Butylene glycol is preferred as the aqueous solvent; vitamin C is preferred as the active ingredient; and glycerin is preferred as the humectant.

[0250] Step 4: Mixing to prepare the D phase

[0251] Slowly pour the C phase obtained in step 3 into the B phase obtained in step 2, control the stirring speed at 800-1200 rpm, maintain the temperature at 25-30℃, and stir for 5-10 minutes until the mixture is homogeneous to obtain the D phase.

[0252] Step 5: Add oily solvents to prepare the inner material

[0253] Take 5 g of oily solvent and slowly add it to the D phase obtained in step four. Maintain a stirring speed of 1000-1500 rpm and a temperature of 25-30℃ for 5-10 minutes until the mixture is homogeneous, thus obtaining the inner material. Sunflower seed oil is the preferred oily solvent.

[0254] Example 10

[0255] According to the steps and conditions of Example 9, the preparation process also includes adding 0.5 g of preservative, preferably phenoxyethanol, which is added together with the aqueous solvent in step three.

[0256] Example 11

[0257] Following the steps and conditions of Example 9, the preparation process also includes adding 0.2 g of an antioxidant, preferably vitamin E, which is added together with the oily solvent in step five. The final gel emulsion spray product is obtained.

[0258] Example 9-11 Finished Product Testing:

[0259] Stability test: Three portions of the prepared gel emulsion spray product were placed in sealed 100g plastic bottles and stored for three months in constant temperature incubators / rooms at 4℃, 25℃, and 40℃ respectively. The appearance, pH value, viscosity, and stratification of the products were observed. The results showed that the product remained stable under all temperature conditions, with no obvious stratification, pH value changes not exceeding ±0.5, and viscosity changes not exceeding ±10%.

[0260] Spray performance testing: The spray distance, spray uniformity, and spray particle size were tested using the prepared gel-emulsion spray product. The product was placed in a spray container, and the morphology of the sprayed material was observed by pressing firmly against a black background. The sprayed material was diluted 1:9 and then placed in a spectrophotometer to test the particle size. The results showed that the product has a spray distance of 15-20 cm, good spray uniformity, and a spray particle size of 2-100 μm, making it suitable for use on skin surfaces.

[0261] Skin absorption test: Using a Raman spectroscopy instrument, the prepared gel-emulsion spray product was applied to the skin. After complete application, the application area was placed in the detection area of ​​the Raman spectroscopy instrument at regular intervals to directly display the image of the product's penetration depth in the epidermis. The results showed that the product forms a uniform film on the skin surface, is rapidly absorbed, has no sticky feeling, and provides long-lasting moisturizing effects.

Claims

1. A gel emulsion spray, characterized in that, It includes water-based thickeners, emulsifiers, water-based solvents, pH adjusters, active ingredients, humectants, oil-based solvents, and water; The aqueous thickener is selected from one or more of the following: acrylate / behenol polyether-25 methacrylate copolymer, acrylate / C10-30 alkanol acrylate crosspolymer, hydroxypropyl methylcellulose, and cellulose. The emulsifier is selected from one or more of sorbitan polyether-30 tetraoleate, sorbitan sesquioleate, polyglycerol-3 polyricinoleate, and polysorbate-20; The aqueous thickener is 0.1-1.5 parts by weight, and the emulsifier is 0.1-3 parts by weight.

2. The gel emulsion spray as described in claim 1, characterized in that, It satisfies one or more of the following conditions: (1) The water-based thickener is an acrylic (ester) / behenol polyether-25 methacrylate copolymer and / or an acrylic (ester) / C10-30 alkanol acrylate crosslinked polymer; (2) The aqueous thickener is 0.5-0.6 parts by weight; (3) The emulsifier is sorbitan polyether-30 tetraoleate or sorbitan sesquioleate; (4) The emulsifier is 1-3 parts by weight; (5) The aqueous solvent is a polyol solvent; (6) The aqueous solvent is 1-30 parts by weight; (7) The pH adjuster is one or more of amino alcohols, alkali metal hydroxides and alkali metal citrates; (8) The pH adjuster is 0.01-1 parts by weight; (9) The active ingredient is a salt of vitamin compounds and / or glycosaminoglycans; (10) The active ingredient is 0.1-10 parts by weight; (11) The humectant is one or more of polyol solvents, urea compounds, and glycosaminoglycans; (12) The humectant is 0.1-20 parts by weight; (13) The oily solvent is one or more of isoalkanes, silicone oil, mineral oil, animal oil and vegetable oil; (14) The oily solvent is 1-10 parts by weight; (15) The gel emulsion spray also includes a preservative; (16) The gel emulsion spray also includes antioxidants.

3. The gel emulsion spray as described in claim 2, characterized in that, It satisfies one or more of the following conditions: (1) The emulsifier is 2-3 parts by weight; (2) In the aqueous solvent, the polyol solvent is one, two or three of propylene glycol, butanediol and 1,3-propanediol; (3) The aqueous solvent is 3-20 parts by weight; (4) The amino alcohol is tromethamine; (5) The alkali metal hydroxide is sodium hydroxide; (6) The alkali metal citrate is sodium citrate; (7) The pH adjuster is 0.1-0.5 parts by weight, for example 0.1-0.3 parts by weight; (8) The vitamin compound is one or more of vitamin C, vitamin C derivatives, and nicotinamide; (9) The salt of the glycosaminoglycan is sodium hyaluronate; (10) The active ingredient is 1-8 parts by weight, for example 1-5 parts by weight; (11) In the humectant, the polyol solvent is propylene glycol or glycerin; (12) The urea compound is urea; (13) The glycosaminoglycan is hyaluronic acid; (14) The moisturizer is 5-15 parts by weight, for example 5-10 parts by weight; (15) When the humectant is a mixture of diol and triol, the mass ratio of the diol to the triol is 1:(1-3), for example 1:2; (16) The isoalkanes are isododecane; (17) The animal oil is squalane; (18) The vegetable oil is sunflower seed oil; (19) The oily solvent is 3-10 parts by weight, for example 3-5 parts by weight; (20) The preservative is one or more of an aromatic alcohol and an unsaturated fatty acid salt, such as phenoxyethanol, and the unsaturated fatty acid salt such as potassium sorbate; (21) The preservative is 0.1-1 parts by weight, for example 0.5 parts by weight; (22) The antioxidant is a tocopherol compound, a phenolic antioxidant, or a combination of a tocopherol compound and a phenolic antioxidant, wherein the tocopherol compound is, for example, vitamin E, and the phenolic antioxidant is, for example, butylated hydroxytoluene or butylated hydroxyanisole; (23) The antioxidant is 0.01-1 parts by weight, for example 0.05-0.2 parts by weight, or for example 0.2 parts by weight.

4. The gel emulsion spray as described in claim 1, characterized in that, The gel emulsion spray comprises the following components: Water-based thickener: 0.1-1.5 parts by weight Aqueous solvent: 1-30 parts by weight Emulsifier: 0.1-3 parts by weight pH adjuster: 0.01-1 parts by weight Active ingredient: 0.1-10 parts by weight Moisturizer: 0.1-20 parts by weight Oily solvent: 1-10 parts by weight Water: 24.5-96.69 parts by weight.

5. The gel emulsion spray as described in claim 4, characterized in that, The described gel emulsion spray is any of the following: Option 1, Water-based thickener: 0.6 parts by weight Aqueous solvent: 5 parts by weight Emulsifier: 2 parts by weight pH adjuster: 0.3 parts by weight Active ingredient: 3 parts by weight Moisturizer: 5 parts by weight Oily solvent: 5 parts by weight Water: 79.1 parts by weight; Option 2, Water-based thickener: 0.5 parts by weight Aqueous solvent: 5 parts by weight Emulsifier: 2 parts by weight pH adjuster: 0.3 parts by weight Active ingredient: 3 parts by weight Moisturizer: 5 parts by weight Oily solvent: 5 parts by weight Water: 79.2 parts by weight; Option 3, Water-based thickener: 0.6 parts by weight Aqueous solvent: 3 parts by weight Emulsifier: 2 parts by weight pH adjuster: 0.3 parts by weight Active ingredient: 3 parts by weight Moisturizer: 5 parts by weight Oily solvent: 5 parts by weight Water: 81.1 parts by weight; Option 4 Water-based thickener: 0.6 parts by weight Aqueous solvent: 5 parts by weight Emulsifier: 3 parts by weight pH adjuster: 0.3 parts by weight Active ingredient: 3 parts by weight Moisturizer: 5 parts by weight Oily solvent: 5 parts by weight Water: 78.1 parts by weight; Option 5, Water-based thickener: 0.6 parts by weight Aqueous solvent: 5 parts by weight Emulsifier: 2 parts by weight pH adjuster: 0.2 parts by weight Active ingredient: 3 parts by weight Moisturizer: 5 parts by weight Oily solvent: 5 parts by weight Water: 79.2 parts by weight; Option 6 Water-based thickener: 0.6 parts by weight Aqueous solvent: 5 parts by weight Emulsifier: 2 parts by weight pH adjuster: 0.3 parts by weight Active ingredient: 1 part by weight Moisturizer: 5 parts by weight Oily solvent: 5 parts by weight Water: 81.1 parts by weight; Option 7, Water-based thickener: 0.6 parts by weight Aqueous solvent: 5 parts by weight Emulsifier: 2 parts by weight pH adjuster: 0.3 parts by weight Active ingredient: 3 parts by weight Moisturizer: 6 parts by weight Oily solvent: 5 parts by weight Water: 78.1 parts by weight; Option 8 Water-based thickener: 0.6 parts by weight Aqueous solvent: 5 parts by weight Emulsifier: 2 parts by weight pH adjuster: 0.3 parts by weight Active ingredient: 3 parts by weight Moisturizer: 5 parts by weight Oily solvent: 3 parts by weight Water: 81.1 parts by weight; Option 9, Water-based thickener: 0.6 parts by weight Aqueous solvent: 20 parts by weight Emulsifier: 2 parts by weight pH adjuster: 0.1 parts by weight Active ingredient: 5 parts by weight Moisturizer: 10 parts by weight Oily solvent: 5 parts by weight Water: 50 parts by weight; Option 10 Water-based thickener: 0.6 parts by weight Aqueous solvent: 20 parts by weight Emulsifier: 2 parts by weight pH adjuster: 0.1 parts by weight Active ingredient: 5 parts by weight Moisturizer: 10 parts by weight Oily solvent: 5 parts by weight Preservative: 0.5 parts by weight Water: 50 parts by weight; Option 11 Water-based thickener: 0.6 parts by weight Aqueous solvent: 20 parts by weight Emulsifier: 2 parts by weight pH adjuster: 0.1 parts by weight Active ingredient: 5 parts by weight Moisturizer: 10 parts by weight Oily solvent: 5 parts by weight Antioxidant: 0.2 parts by weight Water: 50 parts by weight; In Schemes 1 to 11, the aqueous thickener is preferably an acrylic (ester) / behenol polyether-25 methacrylate copolymer and / or an acrylic (ester) / C10-30 alkanol acrylate crosslinking polymer; The emulsifier is preferably sorbitan polyether-30 tetraoleate or sorbitan sesquioleate; The aqueous solvent is preferably a polyol solvent; The pH adjuster is preferably one or more of amino alcohols, alkali metal hydroxides, and alkali metal citrates; The active ingredient is preferably a salt of vitamin compounds and / or glycosaminoglycans; The humectant is preferably one or more of polyols, urea compounds, and glycosaminoglycans; The oily solvent is preferably one or more of isoalkanes, silicone oil, mineral oil, animal oil, and vegetable oil.

6. A method for preparing a gel emulsion spray, characterized in that, It includes the following schemes: Option 1: Mix water-based thickener, active ingredient, water-based solvent and water to obtain an aqueous phase, mix emulsifier and oil-based solvent to obtain an oil phase, mix the aqueous phase and oil phase and then add humectant and pH adjuster to obtain the gel emulsion spray; Option 2: Mix the aqueous thickener and emulsifier to obtain phase A; mix phase A, pH adjuster, aqueous solvent, active ingredient, humectant, oil solvent and water to obtain the gel emulsion spray; The types and amounts of the aqueous thickener, active ingredient, aqueous solvent, emulsifier, and oil solvent in Schemes 1 and 2 are as described in any one of claims 1-3.

7. The method for preparing the gel emulsion spray as described in claim 6, characterized in that, It is any of the following schemes: Option 1: S1. Add the water-based thickener to water and stir to dissolve to obtain phase A; S2. Add the active ingredient and aqueous solvent to water and stir to dissolve. Then add phase A to obtain phase B. S3. Emulsifier and oily solvent are mixed and stirred to obtain phase C; S4. Add phase C to phase B, homogenize, and obtain phase D; S5. Add the humectant to phase D and stir until well mixed to obtain phase F; S6. Add pH adjuster to phase F to adjust pH; S7. Add water to bring the volume to 100%; S8. Filtering and filling; Option 2: S1. Mix the water-based thickener and emulsifier, homogenize, and obtain phase A; S2. Dissolve the pH adjuster in water, add it to phase A to adjust the pH, homogenize, and obtain phase B; S3. Mix the aqueous solvent, active ingredient, moisturizer and water sequentially, homogenize to obtain phase C; S4. Add phase C to phase B, homogenize, and obtain phase D; S5. Add an oily solvent to phase D, homogenize, and obtain the gel emulsion spray; Preferably, the preparation method of the gel emulsion spray satisfies one or more of the following conditions: (1) In step S1 of scheme 1, the method of adding is slow addition; (2) In step S1 of the above scheme, the stirring temperature is 15-35℃, for example, room temperature; (3) In step S3 of scheme 1, the stirring temperature is 25-50℃, for example 40℃; (4) In step S3 of scheme 1, the stirring time is 3-20 minutes, for example 10 minutes; (5) In step S4 of scheme 1, the addition method is slow addition; (6) In step S4 of scheme 1, the homogenization time is 3-20 minutes, for example 5 minutes; (7) In step S4 of scheme 1, the homogenization speed is 1000-10000 rpm, for example 6000 rpm; (8) In step S5 of the above scheme 1, the stirring time is 3-30 minutes, for example 10 minutes; (9) In step S6 of scheme 1, the pH adjustment endpoint is 5.5-7.5, for example 5.5; (10) In step S8 of the scheme 1, the filter cloth used for filtration is 200-400 mesh, for example 300 mesh; (11) In step S1 of scheme 2, the homogenization speed is 500-800 rpm; (12) In step S1 of scheme 2, the homogenization time is 3-20 minutes, for example 10 minutes; (13) In step S1 of scheme 2, the temperature of homogenization is 25-30℃; (14) In step S2 of scheme 2, the addition method is slow addition; (15) In step S2 of the above scheme 2, the pH adjustment endpoint is 5.5-7.5; (16) In step S2 of the above scheme 2, the homogenization speed is 600-1000 rpm; (17) In step S2 of the above scheme 2, the homogenization time is 3-20 minutes; (18) In step S2 of the above scheme 2, the temperature of homogenization is 20-25℃; (19) In step S3 of scheme 2, the homogenization speed is 400-700 rpm; (20) In step S3 of scheme 2, the homogenization time is 3-20 minutes; (21) In step S3 of scheme 2, the temperature of homogenization is 25-30℃; (22) In step S4 of scheme 2, the addition method is slow addition; (23) In step S4 of scheme 2, the homogenization speed is 800-1200 rpm; (24) In step S4 of scheme 2, the homogenization time is 3-20 minutes; (25) In step S4 of scheme 2, the temperature of homogenization is 25-30℃; (26) In step S5 of scheme 2, the addition method is slow addition; (27) In step S5 of scheme 2, the homogenization speed is 1000-10000 rpm; (28) In step S5 of scheme 2, the homogenization time is 3-20 minutes; (29) In step S5 of the above scheme 2, the temperature of homogenization is 25-30℃.

8. A gel emulsion spray prepared by the method of any one of claims 6-7.

9. A gel emulsion spray comprising an aqueous thickener, an emulsifier, an aqueous solvent, a pH adjuster, an active ingredient, a humectant, an oil solvent, and water; or comprising an aqueous thickener, an emulsifier, an aqueous solvent, a pH adjuster, an active ingredient, a humectant, an oil solvent, water, and an antioxidant; or comprising an aqueous thickener, an emulsifier, an aqueous solvent, a pH adjuster, an active ingredient, a humectant, an oil solvent, water, and a preservative.

10. The use of a gel emulsion spray as described in any one of claims 1-7 in a cosmetic for moisturizing or repairing the skin.