An easy-to-clean sunscreen product and preparation method thereof

Abstract

The present invention belongs to the technical field of cosmetics in light chemical industry, and particularly relates to an easy-to-clean sunscreen product and a preparation method thereof. The product is composed of an oil phase and a water phase in a weight ratio of 50-70:30-50; the composition and weight proportion of the oil phase are: 4-5 parts of oil-in-water emulsifier, 0.5-3 parts of film former, 15-20 parts of emollient, 1-2 parts of filler, 5-10 parts of powder dispersant, 25-35 parts of physical sunscreen, 0.2-0.3 parts of color powder, and 0.01-0.1 parts of stabilizing suspending agent; the composition and weight proportion of the water phase are: 15-30 parts of solvent, 0.05 parts of chelating agent, 1 part of stabilizer, 10-15 parts of polyol, and 0-10 parts of moisturizing functional substance.

Description

Technical field:

[0001] The invention belongs to the technical field of cosmetics in light chemical industry, and in particular relates to an easy-to-clean sunscreen product and a preparation method thereof. Background technology:

[0002] In a short period of time after using sunscreen, it is difficult to clean it with ordinary facial cleansers. You may need to use more force to clean it, or use cleansers and makeup removers with stronger cleaning power. For non-waterproof sunscreen, water can wash off about half of the sunscreen, and facial cleansers and makeup removers can remove more than 80% of the sunscreen. However, non-waterproof sunscreen (such as oil-in-water or water-based sunscreen) has poor makeup retention, especially in the presence of sweat, which can easily reduce the sunscreen effect; while waterproof sunscreen requires makeup remover to remove it, and it is easier to clean it within a short period of time after applying the sunscreen. It is more difficult to remove waterproof sunscreen that lasts all day.

[0003] This is because waterproof sunscreens are generally oil-in-water structures that are waterproof and sweat-proof. Generally, it is difficult to clean with water, and it is easy to remove with a strong makeup remover. However, too strong a makeup remover can cause skin dehydration and loss of moisture in the stratum corneum. Therefore, the best solution is to have a sunscreen product that is easy to remove and waterproof and sweat-proof.

[0004] Therefore, the film-forming agent and co-emulsifier in this technology are the key. The film-forming agent is made of "soft film" poly-undiluted esters and silane cross-linked polymers to make it oil-soluble and softer in film formation. The co-emulsifier is added with hydrogenated lecithin, which can help remove sunscreen in the presence of makeup removers without the need to use makeup removers with strong makeup remover ability. Summary of the invention:

[0005] The present invention aims at the above problems and provides an easy-to-clean sunscreen product and a preparation method thereof.

[0006] In order to achieve the above object, the present invention adopts the following technical scheme, which is composed of an oil phase and a water phase in a weight ratio of 50-70:30-50;

[0007] The composition and weight proportions of the oil phase are: 4-5 parts of water-in-oil emulsifier, 0.5-3 parts of film former, 15-20 parts of emollient, 1-2 parts of filler, 5-10 parts of powder dispersant, 25-35 parts of physical sunscreen, 0.2-0.3 parts of color powder, and 0.01-0.1 parts of stabilizing suspending agent;

[0008] The composition and weight proportions of the water phase are: 15 to 30 parts of solvent, 0.05 parts of chelating agent, 1 part of stabilizer, 10 to 15 parts of polyol, and 0 to 10 parts of moisturizing functional substance.

[0009] The water-in-oil emulsifier is cetyl PEG / PPG-10 / 1 polydimethylsiloxane, PEG-9 polydimethylsiloxyethyl polydimethylsiloxane, polyglyceryl-2 diisostearate, polyglyceryl-3 polydimethylsilyl hydroxyethyl polydimethylsiloxane, PEG / PPG-14 / 7 dimethyl ether, lauryl PEG / PPG-18 / 18 polymethylsiloxane, PEG / PPG-18 / 18 polydimethylsiloxane, lauryl PEG-10 tri(trimethylsiloxane) siloxyethyl polydimethylsiloxane, One or more combinations of polyglyceryl-4 isostearate, polyglyceryl-4 diisostearate / polyhydroxystearate / sebacate, sorbitan sesquioleate, sorbitan sesquiisostearate, PEG-20 glyceryl triisostearate, PEG-40 hydrogenated castor oil, polyglyceryl-3 polyricinoleate, polyglyceryl-6 polyricinoleate, lauryl PEG-9 polydimethylsiloxyethyl polydimethicone, PEG-30 dipolyhydroxystearate, and bis-PEG / PPG-14 / 14 polydimethicone. Only a combination of two or more can achieve a better emulsification effect.

[0010] The film-forming agent is one or more of an acrylic acid (ester) / polydimethylsiloxane copolymer, an acrylic acid (ester) and a copolymer of a derivative.

[0011] The emollient is one or more of hydrogenated lecithin, dipropylene glycol dibenzoate, trimethyl pentaphenyl trisiloxane, diphenylsiloxyphenyl trimethicone, diisostearate malate, glycolipid, hydrogenated polyisobutene, polyisobutene, cyclopentasiloxane, polydimethylsiloxane, glyceryl tri(behenic acid / isostearate / eicosanedioic acid) ester, deep sea camellia seed oil, avocado tree fruit fat, plant squalane, jojoba oil, sunflower seed oil, castor oil, white meadowfoam seed oil, coconut oil, shea butter, grape seed oil, macadamia oil, olive oil, palm oil, cocoa butter, jojoba fat, glycolipid, plant-derived octyldodecanol, plant-derived caprylic capric triglyceride, and plant-derived coconut alcohol-caprylic capric triglyceride.

[0012] The filler is one or more of silica, polymethylsilsesquioxane, polydimethylsiloxane / vinyl polydimethylsiloxane cross-linked polymer (silicon elastomer powder), mica from natural sources, synthetic fluorphlogopite, methyl methacrylate cross-linked polymer, and lauroyl lysine.

[0013] The powder dispersant is one or more of octyl polymethylsiloxane, neopentyl glycol diheptanoate, diisopropyl sebacate octyldodecanol, polydimethylsiloxane (different viscosities), caprylic / capric triglyceride, plant-derived coconut oil alcohol-caprylic capric triglyceride, soybean lecithin, plant-derived polyglyceryl-3 diisostearate, plant-derived polyglyceryl-2 triisostearate, plant-derived polyglyceryl 2-dipolyhydroxystearate, and plant-derived oleic / linoleic / linolenic polyglycerol esters.

[0014] The physical sunscreens are nano titanium dioxide and nano zinc oxide; titanium dioxide is treated with a wet surface of silicon dioxide to give it a certain degree of hydrophilicity, better dispersibility in the system, no agglomeration, and a smoother skin feel; zinc oxide is treated with a semi-wet surface of triethoxyoctylsilane to allow it to be better dispersed in the powder dispersant, no agglomeration, and better compatibility with the system.

[0015] The toner is iron oxide, specifically iron red, iron yellow and / or iron black.

[0016] The stabilizing suspending agent is one or both of disteardimethylammonium hectorite and fumed silica.

[0017] The solvent is one or more of deionized water, floral water, and fermented water.

[0018] The floral water can be Egyptian blue water lily (NYMPHAEA CAERULEA) floral water, white lily (LILIUM CANDIDUM) floral water, white chamomile (ANTHEMIS NOBILIS) floral water, North American witch hazel (HAMAMELIS VIRGINIANA) floral water, safflower (CARTHAMUS TINCTORIUS) floral water, golden chamomile (CHRYSANTHELLUM INDICUM) floral water, bitter orange (CITRUSAURANTIUM AMARA) floral water, broad-leaved linden (TILIA PLATYPHYLLOS) floral water, lotus (NELUMBIUM SPECIOSUM) floral water, lotus (NELUMBO NUCIFERA) floral water, verbena (VERBENA OFFICINALIS) floral water, rose (ROSA RUGOSA) floral water, plum (PRUNUS MUME) floral water, Moroccan chamomile (ORMENIS Mixta flower water, Jasmine flower water, Chamomile flower water, Peony flower water, Lippia flower water, Tilia flower water, Horse chestnut flower water, Centaurea cynanchum flower water, Jasminum officinale flower water, Prunus persica flower water, Citrus aurantium flower water, Rose flower water, Elderberry flower water, Melissa officinalis flower water, Pelargonium flower water One or more of the following: GRAVEOLENS floral water, LAVANDULA ANGUSTIFOLIA floral water, ROSA CENTIFOLIA floral water, HELICHRYSUM ITALICUM floral water, OLEAEUROPAEA floral water, and LAVANDULA HYBRIDA floral water.

[0019] The fermentation water can be a filtrate of Pichia pastoris fermentation lysate, a filtrate of ozonated yeast fermentation lysate, a budding Aureobasidium fermentation product, a rice fermentation product filtrate, a bifid yeast fermentation product filtrate, a bifid yeast fermentation product lysate, a bifid yeast fermentation product extract, a fermentation product extract of Zymomonas fermentation product, a galactosaccharomyces fermentation product filtrate, a Monascus (MONACS) / rice fermentation product, a Pseudoalteromonas fermentation product extract, a Candida / Cambogia (GARCINIA CAMBOGIA) fermentation product, a Candida albicans / glucose / rapeseed oleic acid methyl ester fermentation product, an Alteromonas fermentation product extract, a yeast fermentation product extract, a yeast / coix lacryma-jobi (COIX LACRYMA-JOBI) YUEN) Seed Ferment Filtrate, Saccharomyces / Soy Protein Ferment, Saccharomyces / Barley Seed Ferment Filtrate, Saccharomyces / Rice Ferment Filtrate, Saccharomyces / Tourmaline Ferment, Saccharomyces / Calcium Ferment, Saccharomyces / Silicon Ferment, Saccharomyces / Potassium Ferment, Saccharomyces / Malachite Ferment, Saccharomyces / Laminaria Ferment, Saccharomyces / Potato Extract Ferment Filtrate, Saccharomyces / Magnesium Ferment, Saccharomyces / Manganese Ferment, Saccharomyces / Rice Bran Ferment, Saccharomyces / Glucose GRAPE FERMENT EXTRACT, SACCHARIDES / IRON FERMENT, SACCHARIDES / COPPER FERMENT, SACCHARIDES / ZINC FERMENT, SACCHARIDES / MOTHER OF PEARL FERMENT LYSATE FILTRANTE, SACCHARIDES FERMENT, SACCHARIDES FERMENT FILTRANTE, SACCHARIDES FERMENT LYSATE FILTRANTE, SACCHARIDES / ACETOBACTER XYLIUM / BLACK TEA FERMENT, RANNELLIA / SOY PROTEIN FERMENT, SCHIZOSACCHAROMYCES MYCELIUM FERMENT FILTRANTE, EUROLEA / OLIC ACID FERMENT, LEUNCONSTRUCT / RAPHANUS SATIVUS ROOT FERMENT FILTRANTE, ENDOMYCES FERMENT FILTRANTE, VITISVINIFERA FERMENT EXTRACT, SPHINGOMONAS FERMENT EXTRACT, ASPERGILLUS FERMENT, ASPERGILLUS / GLUCOSE / SOYBEAN / STARCH FERMENT FILTRANTE.Lactobacillus / ERIODICTYON CALIFORNICUM Ferment Extract, Lactobacillus / Soybean Ferment Extract, Lactobacillus / Soybean Extract Ferment Filtrate, Lactobacillus / Rice Ferment, Lactobacillus / Soy Milk Ferment Filtrate, Lactobacillus / Water Hyacinth Ferment, Lactobacillus / Black Mustard Seed Ferment Extract, Lactobacillus / Rye Powder Ferment, Lactobacillus / Pear Juice Ferment Filtrate, Lactobacillus / Mung Bean (PHASEOLUS RADIATUS) Seed Extract / Monosodium Glutamate Ferment Filtrate, Lactobacillus / Hibiscus Sabdariffa Flower Ferment Filtrate, Lactobacillus / Cucurbita Pepo Ferment Extract, Lactobacillus / Milk / Ferment Filtrate, Lactobacillus / Milk / Magnesium / Zinc Ferment Lysate, Lactobacillus / Ginseng Root Ferment Filtrate, Lactobacillus / WASABIA JAPONICA ROOT FERMENT EXTRACT, LACTOBACILLUS / PUNICA GRANATUM FRUIT FERMENT EXTRACT, LACTOBACILLUS / CITRUS MEDICA LIMONUM PEEL FERMENT EXTRACT, LACTOBACILLUS / ALGAE EXTRACT FERMENT, LACTOBACILLUS / ACERA CHERRY FERMENT, LACTOBACILLUS FERMENT, LACTOBACILLUS FERMENT LYSATE, LACTOBACILLUS / PHASEOLUS RADIATUS SEED EXTRACT FERMENT FILTRANS, LACTOBACILLUS / MILF FERMENT LYSATE, LACTOBACILLUS FERMENT, LACTOBACILLUS FERMENT LYSATE, LACTOBACILLUS FERMENT EXTRACT, STREPTOCOCCUS THERMOPHILUS FERMENT, THERMUS THERMOPHILLUS FERMENT, ACIDOPHILS / GRAPEFERMENT, VITRASCILLUS FERMENT, CHLORELLA VULGARIS / LUPINUS One or more of ALBUS) protein fermentation product, Chlorella fermentation product, Bacillus / soybean fermentation product extract, Bacillus / glutamic acid fermentation product filtrate, Bacillus / rice bran extract / soybean extract fermentation product filtrate, Bacillus fermentation product, Porphyridium / zinc fermentation product.

[0020] The chelating agent is EDTA-2Na and / or sodium phytate.

[0021] The stabilizer is one or more of magnesium sulfate, sodium chloride, potassium chloride and magnesium chloride.

[0022] The polyol is butanediol, pentanediol, 1,2-hexanediol, 1,3-propylene glycol or glycerol.

[0023] The preservative is one or more of p-hydroxyacetophenone, phenoxyethanol, caprylyl glycol, pentylene glycol, 1,2-hexanediol, caprylhydroxamic acid, and chlorphenesin.

[0024] The moisturizing functional substance is one or more of glycerol glucoside, plant protein, ectoine, yeast fermentation product, plant extract and ceramide.

[0025] The preparation method of sunscreen is specifically,

[0026] 1. According to the above ratio, add the toner into the powder dispersant and stir to disperse evenly;

[0027] 2. Grind the color paste obtained in step 1 on a three-roll mill for at least three times for standby use;

[0028] 3. After mixing the oil phase ingredients, stir evenly at 70-80°C;

[0029] 4. Add the color paste obtained in step 2 to the oil phase obtained in step 3 and stir until uniform;

[0030] 5. Mix the solvent, chelating agent, stabilizer, polyol and preservative in the water phase and add them to the oil phase prepared in step 4, and homogenize for 10 to 30 minutes, preferably 15 to 25 minutes;

[0031] 6. After cooling to 40-45°C, add moisturizing ingredients to the mixture obtained in step 5, stir and homogenize, and after cooling, send for inspection, can and store.

[0032] In step 3, after the oil phase components are mixed, they are stirred evenly at 70-80° C.; hydrogenated lecithin, acrylates / polydimethylsiloxane, and cetyl PEG / PPG-10 / 1 polydimethylsiloxane in the oil phase components need to be homogenized 3-5 times at a pressure of 100-200 MPa using a high-pressure microjet in advance, and then mixed and stirred with other components in the oil phase; the treated film-forming agent and emollient are more evenly dispersed with each other, laying the foundation for the subsequent facial cleansing step.

[0033] Beneficial effects of the present invention:

[0034] 1. The present invention has a water-in-oil formula structure and a film-forming agent, which maintains the characteristics of waterproof sunscreen: it is waterproof and sweat-proof while being easy to clean without the need for a strong makeup removal product;

[0035] 2. The present invention can still maintain the moisturizing effect after removing makeup and reduce the water loss on the skin surface;

[0036] 3. The present invention mainly uses physical sunscreen, avoids the use of chemical sunscreen, and reduces potential irritation.

[0037] 4. The present invention meets consumers' further demands for sunscreen products, is innovative and novel in the cosmetics market, and has strong product competitiveness. Description of the drawings:

[0038] Figure 1 This is a human face picture of the blank group.

[0039] Figure 2 This is a human face picture after applying Example 1.

[0040] Figure 3 This is a picture of a human face after washing the face with Example 1 applied thereon. Specific implementation method:

[0041] Embodiment 1:

[0042] In advance, hydrogenated lecithin, acrylates / polydimethylsiloxane, and cetyl PEG / PPG-10 / 1 polydimethylsiloxane are homogenized 3-5 times by high-pressure microjetting at a pressure of 100-200 MPa and set aside.

[0043] Add 0.07kg of iron red, 0.2kg of iron yellow and 0.005kg of iron black to 3kg of octyl polymethicone and 4kg of neopentyl glycol diheptanoate, and stir and disperse them evenly; grind the obtained color paste on a three-roll mill for at least three times for standby use; add 0.1kg of pretreated hydrogenated lecithin, 0.8kg of acrylic acid (ester) / polydimethylsiloxane, 2kg of cetyl PEG / PPG-10 / 1 polydimethylsiloxane and 1kg of lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane, 1kg of polyglyceryl-4 isostearate, 15kg of polydimethylsiloxane, 1kg of polydimethylsiloxane / vinyl polydimethylsiloxane crosspolymer, 1kg of avocado tree butter, 0.7kg of disteardimonium hectorite, 1kg of silica, 10kg of nano titanium dioxide color paste, and zinc oxide coated with triethoxycaprylylsilane. 15kg, 5kg of silica-coated titanium dioxide are mixed and stirred; the obtained color paste is added to the obtained oil phase and stirred until uniform to obtain an oil phase product; 17.775kg of deionized water, 0.05kg of EDTA-disodium, 1kg of sodium chloride, 10kg of butanediol, 0.5kg of caprylyl glycol, 0.5kg of pentylene glycol, 0.5kg of 1,2-hexanediol and 0.5kg of p-hydroxyacetophenone are mixed uniformly and added to the obtained oil phase product, and the homogenization time is 15-25min; after cooling to 40-45°C, 0.5kg of yeast / zinc fermentation product, 0.5kg of ectoine, 0.5kg of glycerol glucoside, 0.5kg of ceramide NP, 3kg of hydrolyzed soy protein, 1kg of citrus fruit extract and 3kg of aloe extract are added to the obtained mixture, stirred and homogenized uniformly, and then sent for inspection, canned and stored after cooling.

[0044] Embodiment 2:

[0045] The difference from Example 1 is that stirring and homogenization are directly performed in the oil phase without any pretreatment process.

[0046] Embodiment 3:

[0047] The difference from Example 1 is that

[0048] The amount of deionized water in the water phase is 26.775 kg, and there is no moisturizing agent in the water phase.

[0049] Embodiment 4:

[0050] The difference from Example 1 is that

[0051] There is no hydrogenated lecithin component in the oil phase and no pretreatment process, and the deionized water in the water phase is 17.875 kg.

[0052] Embodiment 5:

[0053] The difference from Example 1 is that 0.8 kg of acrylic acid (ester) / polydimethylsiloxane is replaced with 3 kg of trimethylsiloxysilicate.

[0054] The aqueous phase includes: 15.575kg of deionized water, 0.05kg of disodium EDTA, 1kg of sodium chloride, 10kg of butylene glycol, 0.5kg of caprylyl glycol, 0.5kg of pentylene glycol, 0.5kg of 1,2-hexanediol, and 0.5kg of p-hydroxyacetophenone; moisturizing ingredients include 0.5kg of yeast / zinc fermentation product, 0.5kg of ectoine, 0.5kg of glyceryl glucoside, 0.5kg of ceramide NP, 3kg of hydrolyzed soy protein, 1kg of citrus fruit extract, and 3kg of aloe extract.

[0055] Comparative Example 1:

[0056] Choose a physical sunscreen product on the market.

[0057] Its composition is water, cyclopentasiloxane, zinc oxide, titanium dioxide, polydimethylsiloxane, butylene glycol, PEG-10 polydimethylsiloxane, glycerin, polymethylsilsesquioxane, sodium chloride, CI77491, silica, CI77499, trimethylsiloxysilicate, butylene glycol dicaprylate / dicaprate, triethoxycaprylylsilane, panthenol, bisabolol, CI77492, acrylates / polytrimethicone methacrylate copolymer, phenoxyethanol, diphenyl dimethicone / vinyl diphenyl dimethicone / silsesquioxane crosspolymer, caprylyl glycol, polyhydroxystearic acid, and laureth-4.

[0058] Example 6 Performance Test

[0059] 1. Cleaning ability test

[0060] Cleaning method: White mud washability test,

[0061] Specifically: take an appropriate amount of white mud and apply it evenly on the face, being careful to avoid the skin around the eyes. The amount should be based on covering your own skin color and pores. Apply a thick amount to the T-zone, areas with large pores and blackheads. Continue to apply the white mud for 5-8 minutes. If the skin is particularly greasy, you can apply it for 10 minutes. Wash it off before the white mud dries.

[0062] Test tool: Skin color test probe Colorimeter CL400

[0063] Test principle: There are eight LED white light sources evenly distributed in a circular direction inside the probe. The emitted light is scattered in all directions inside the probe, part of the light passes through the skin, and part of the light is scattered by the skin. Only the reflected light of the skin is received by the XYZ sensor inside the probe, so that the skin color can be tested using the XYZ three-primary color method. The test results are displayed in the XYZ-numeric value method (three-primary color method), L*a*b value method (L is brightness, a and b are two chromaticity components) and RGB method (red, green and blue). The numerical results of these three forms are interrelated, and the numerical value of one form can be calculated from the numerical value of another form. At the same time, the ITA value representing the skin color classification level is also automatically calculated.

[0064] Test process: Gently press the probe on the surface of the skin to be tested, and the test results will be displayed. The test is simple and convenient, with good data repeatability. The test time is 1 second. Generally, it is repeated at least 3 times to get the average value. The results are shown in Table 1.

[0065] Table 1 Cleaning ability test results

[0066]

[0067] Note: L* represents brightness. The larger the value, the more white the color is, and the smaller the value, the more black the color is.

[0068] The results show that the white mud cleansing ability of Examples 1 and 3 is better, and the state before and after applying the sunscreen is similar. The other examples and comparative examples are white after cleaning, indicating that the cleaning ability is poor.

[0069] 2. Stability test

[0070] Necessity of testing: Products that have been packaged with special processes will have their stability factors considered. Especially for products containing powder (such as foundation, sunscreen, etc.), it is necessary to consider whether the powder and liquid are separated, so the inspection of their stability is crucial.

[0071] Test method: The laboratory high-temperature and low-temperature storage stability test adopts the following methods: (1) Place in a 40-50℃ electric constant temperature incubator for 30-50 days, and observe after returning to room temperature; (2) Change back and forth frequently between 0-50℃ within 24 hours, repeat this operation for 15-30 days, and observe after returning to room temperature; (3) Cycle storage at -5℃ and 40℃ for 3 times, each time for 24 hours, that is, after storing at -5℃ for 24 hours, store at room temperature for 24 hours, and then place in a 40℃ constant temperature incubator for 24 hours, cycle 3 times in sequence, and observe its stability. (4) Store at -5℃ for 1 week and observe its stability.

[0072] The centrifugal test method is: add the sample into a centrifuge and rotate at 10000RPM for 10-15min or 3000RPM for 30min or 300RPM for 1h, and observe the stratification and separation of the liquid to obtain the results in Table 2 below.

[0073] Table 2 Stability test results of various examples / comparative examples

[0074] sample Heat resistant Cold resistant Centrifugation Example 1 No significant changes No significant changes No stratification or separation Example 2 No significant changes No significant changes No stratification or separation Example 3 No significant changes No significant changes No stratification or separation Example 4 No significant changes No significant changes No stratification or separation Example 5 No significant changes No significant changes No stratification or separation Comparative Example 1 No significant changes No significant changes No stratification or separation

[0075] The results show that the embodiments and comparative examples have good stability and no stratification or separation occurs, indicating that the special process in the preparation process has little effect on the stability.

[0076] 3. Moisturizing test after washing

[0077] Necessity of testing: After washing off sunscreen products, the face may become dry and flaky. This is better than oil-control ingredients, such as silica and silicone elastomers, which absorb skin oil, sweat and other ingredients, causing the skin to become dry, especially on dry skin. The probability of this happening is lower on oily skin. Therefore, in order to verify the moisturizing properties of the product after cleaning, this test is essential.

[0078] Test method: Transepidermal water loss test results

[0079] The test instrument is: Tewameter, the test is carried out on D0 and D28, the test site is the left and right cheeks, and the test principle is based on Fick's diffusion law:

[0080]

[0081] dm / dt—the amount of water evaporated per hour, D—constant, A—area, dp / dx—the pressure difference between the upper and lower sensors in mmHg. The test results are shown in Table 3.

[0082] Table 3 Moisture retention test results after washing

[0083] sample Base value (D0) Use the product for 28 days (D28) 28-day change rate of product use Example 1 19.17±0.35 15.28±0.40 -20.29％ Example 2 19.57±0.25 17.13±0.35 -12.47％ Example 3 19.05±0.25 17.50±0.30 -8.14％ Example 4 18.45±0.20 15.54±0.35 -15.77％ Example 5 20.38±0.30 17.66±0.35 -13.35％ Comparative Example 1 19.10±0.20 17.08±0.40 -10.58％

[0084] The subjects used the samples of the embodiments and comparative examples for 28 consecutive days. Compared with the basal values, the transepidermal water loss values ​​of embodiments 1, 2, 4, and 5 decreased significantly. The decrease rates of embodiment 3 and the comparative example were lower, and the effects were relatively weak, indicating that the addition of active substances has a greater impact on the moisturizing effect after cleansing.

[0085] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention specification, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An easy-to-clean sunscreen product, It is characterized in that It consists of an oil phase and a water phase in a weight ratio of 50-70:30-50; The composition and weight proportions of the oil phase are: 4-5 parts of water-in-oil emulsifier, 0.5-3 parts of film former, 15-20 parts of emollient, 1-2 parts of filler, 5-10 parts of powder dispersant, 25-35 parts of physical sunscreen, 0.2-0.3 parts of color powder, and 0.5-1 parts of stabilizing suspending agent; The composition and weight proportions of the water phase are: 15-30 parts of solvent, 0.05 parts of chelating agent, 1 part of stabilizer, 10-15 parts of polyol, 9 parts of moisturizing functional substance, and 1 part of preservative; The water-in-oil emulsifier is PEG-9 polydimethylsiloxyethyl polydimethylsiloxane, polyglyceryl-2 diisostearate, polyglyceryl-3 polydimethylsiloxyethyl polydimethylsiloxane, PEG / PPG-14 / 7 dimethyl ether, lauryl PEG / PPG-18 / 18 polymethylsiloxane, PEG / PPG-18 / 18 polydimethylsiloxane, lauryl PEG-10 tri(trimethylsiloxane) siloxyethyl polydimethylsiloxane, polyglyceryl-4 isostearate, polyglyceryl-4 diisostearate / poly A combination of one or more of hydroxystearate / sebacate, sorbitan sesquioleate, sorbitan sesquiisostearate, PEG-20 glyceryl triisostearate, PEG-40 hydrogenated castor oil, polyglyceryl-3 polyricinoleate, polyglyceryl-6 polyricinoleate, lauryl PEG-9 polydimethylsiloxyethyl dimethicone, PEG-30 dipolyhydroxystearate, bis-PEG / PPG-14 / 14 dimethicone and cetyl PEG / PPG-10 / 1 dimethicone; The film-forming agent is an acrylic acid (ester) / polydimethylsiloxane copolymer; The emollient is a combination of one or more of dipropylene glycol dibenzoate, trimethyl pentaphenyl trisiloxane, diphenylsiloxyphenyl trimethicone, diisostearate malate, glycolipid, hydrogenated polyisobutene, polyisobutene, cyclopentasiloxane, polydimethylsiloxane, glyceryl tri(behenic acid / isostearate / eicosanedioic acid) esters, deep sea camellia seed oil, avocado tree butter, plant squalane, jojoba oil, sunflower seed oil, castor oil, meadowfoam seed oil, coconut oil, shea butter, grape seed oil, macadamia oil, olive oil, palm oil, cocoa butter, jojoba butter, plant-derived octyldodecanol, plant-derived caprylic capric triglyceride, and plant-derived coconut alcohol-caprylic capric triglyceride and hydrogenated lecithin; The stabilizer is one or more of magnesium sulfate, sodium chloride, potassium chloride and magnesium chloride; The moisturizing functional substance is one or more of glycerol glucoside, plant protein, ectoine, yeast fermentation product, plant extract, and ceramide; The preservative is one or both of caprylyl glycol and p-hydroxyacetophenone; In the oil phase components, hydrogenated lecithin, acrylates / polydimethylsiloxane, cetyl PEG / PPG-10 / 1 polydimethylsiloxane need to be respectively subjected to high-pressure homogenization 3-5 times at a pressure of 100-200 MPa by high-pressure microfluidization in advance, and then mixed and stirred with other components in the oil phase.

2. An easy-to-clean sunscreen product according to claim 1, characterized in that the filler is one or more of silica, polymethylsilsesquioxane, polydimethylsiloxane / vinyl polydimethylsiloxane cross-linked polymer, mica of natural origin, synthetic fluorophlogopite, methyl methacrylate cross-linked polymer, lauroyl lysine.

3. An easy-to-clean sunscreen product according to claim 1, characterized in that the powder dispersant is one or more of octyl polymethylsiloxane, neopentyl glycol diheptanoate, diisopropyl sebacate octyldodecanol, polydimethylsiloxane, caprylic / capric triglyceride, coconut oil alcohol-caprylic / capric triglyceride of plant origin, soy lecithin, polyglycerol-3 diisostearate of plant origin, polyglycerol-2 triisostearate of plant origin, polyglycerol 2-dimeric hydroxystearate of plant origin, oleic / linoleic / linolenic acid polyglycerol ester of plant origin.

4. An easy-to-clean sunscreen product according to claim 1, characterized in that the physical sunscreen agents are nano-titanium dioxide and nano-zinc oxide.

5. An easy-to-clean sunscreen product according to claim 1, characterized in that the color powder is iron red, iron yellow and / or iron black.

6. An easy-to-clean sunscreen product according to claim 1, characterized in that the stable suspending agent is one or two of dimethyldistearylammonium lithium montmorillonite and fumed silica.

7. An easy-to-clean sunscreen product according to claim 1, characterized in that the solvent is one or more of deionized water, flower water, and fermented water.

8. An easy-to-clean sunscreen product according to claim 1, characterized in that the chelating agent is EDTA-2Na and / or sodium phytate.

9. An easy-to-clean sunscreen product according to claim 1, characterized in that the polyhydric alcohol is butanediol, pentanediol, 1,2-hexanediol, 1,3-propanediol or glycerol.

10. A preparation method of the sunscreen product according to claim 1, characterized in that the specific preparation process is as follows: (1) According to the above ratio, add the color powder to the powder dispersant and stir to disperse evenly; (2) Grind the color paste obtained in step (1) on a three-roll mill at least three times for later use; (3) After mixing the oil phase components, stir evenly at 70-80 °C; (4) Add the color paste obtained in step (2) to the oil phase obtained in step (3) and stir until uniform; (5) Mix the solvent, chelating agent, stabilizer, polyhydric alcohol, and preservative in the water phase evenly, and then add them to the oil phase prepared in step (4), and homogenize for 10-30 min; (6) After cooling to 40-45°C, add moisturizing ingredients to the mixture obtained in step 5), stir and homogenize, and after cooling, send for inspection, can, and store.

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