Traceless liquid foundation capable of not being rubbed off and preparation method of liquid foundation

Abstract

The invention belongs to the technical field of cosmetics, and particularly discloses an anti-rubbing traceless liquid foundation and a preparation method thereof. The non-rubbing-off traceless liquid foundation is prepared from the following raw materials in percentage by weight: 0.5 to 1 percent of disteardimonium hectorite, 2 to 7 percent of an emulsifier, 1.5 to 4 percent of a stabilizer, 5 to 15 percent of a film-forming agent, 0.5 to 3 percent of polymethylsilsesquioxane, 0.05 to 1 percent of tocopheryl acetate, 10.1 to 46 percent of an emollient, 11.5 to 26 percent of a coloring agent, 20 to 50 percent of water, 1 to 5 percent of propylene glycol, 0.05 to 1 percent of EDTA (Ethylene Diamine Tetraacetic Acid) disodium and 0.5 to 1 percent of a preservative. All the raw materials are matched with one another, so that the makeup is kept fresh and durable, the foundation make-up is firmly fixed, and the makeup is prevented from being rubbed off or removed.

Description

Technical Field

[0001] This application relates to the technical field of cosmetics, and in particular to a non-smudge-proof, traceless foundation and its preparation method. Background Technology

[0002] In today's beauty market, liquid foundation is a widely used base makeup product. Traditional liquid foundation is mainly composed of ingredients such as oils, pigments, emulsifiers, and moisturizers. These ingredients are mixed evenly to obtain the product, which is used to modify the facial skin and ensure a natural and uniform overall makeup effect.

[0003] In existing technologies, commonly used foundation formulations include the following: using mineral oil or synthetic esters as an oil-based matrix, adding titanium dioxide to provide coverage, then adding an appropriate amount of surfactant for emulsification and stabilization, and adding moisturizing ingredients such as glycerin to improve the user experience. The resulting foundation can, to a certain extent, meet basic needs for concealing blemishes and beautifying the skin, correcting skin tone discrepancies, and giving the skin a uniform and consistent color.

[0004] However, there are obvious problems during use. When people engage in daily activities, such as touching their face or friction from clothing, makeup is prone to fading, resulting in patchy and uneven makeup. Moreover, once the makeup has faded, it leaves noticeable marks on the skin, affecting appearance. In addition, wearing makeup for extended periods can cause the skin to feel stuffy and uncomfortable, and may even trigger skin problems such as acne. Summary of the Invention

[0005] To improve the poor staying power of existing liquid foundations, this application provides a non-smudge-proof, traceless liquid foundation and its preparation method.

[0006] This application provides a non-smudge-proof, seamless foundation liquid, employing the following technical solution: A non-smudge-proof, flawless foundation, comprising, by weight percentage, the following ingredients: 0.5-1% distearate dimethylammonium lithium montmorillonite, 2-7% emulsifier, 1.5-4% stabilizer, 5-15% film-forming agent, 0.5-3% polymethylsilsesquioxane, 0.05-1% tocopheryl acetate, 10.1-46% emollient, 11.5-26% colorant, 20-50% water, 1-5% propylene glycol, 0.05-1% disodium EDTA, and 0.5-1% preservative.

[0007] By employing the above technical solutions, distearate dimethylammonium lithium montmorillonite adjusts the viscosity of the foundation, giving it suitable fluidity and spreadability, maintaining a stable structure, and preventing ingredient sedimentation. Emulsifiers ensure uniform mixing of the aqueous and oil phases, forming a stable emulsion system, ensuring a fine foundation texture and preventing layering. Stabilizers enhance the chemical stability of the foundation, preventing deterioration or performance changes during storage and use. Film-forming agents provide long-lasting and smudge-proof effects, forming a uniform film on the skin surface to firmly fix the foundation and prevent smudging or makeup loss. Polymethyl silsesquioxane absorbs oil from the skin surface, keeping makeup fresh and long-lasting, while also improving the texture of the foundation, making it adhere better to the skin.

[0008] Tocopheryl acetate prevents the oxidation and deterioration of oils and other ingredients in foundation, while also providing some nourishment and protection to the skin. Emollients provide hydration and moisturization, making makeup adhere better and reducing caking. Colorants are used to adjust the color of foundation to meet the needs of users with different skin tones. Propylene glycol absorbs moisture from the air, keeping the skin hydrated and preventing makeup from becoming uneven due to dryness. Disodium EDTA can complex with metal ions in cosmetics, preventing adverse effects on product quality and stability. Preservatives inhibit the growth and reproduction of microorganisms, extending the shelf life of foundation and ensuring product safety during use.

[0009] Preferably, the emulsifier is composed of cetyl PEG / PPG-10 / 1 polydimethylsiloxane and PEG-10 polydimethylsiloxane in a mass ratio of 1:0.375-6.

[0010] By adopting the above technical solution, cetyl PEG / PPG-10 / 1 polydimethylsiloxane exhibits excellent heat and cold resistance, good emulsifying properties to ensure the emulsion does not break down or separate, and also possesses lubricating and water-locking abilities to prevent water-oil separation in the emulsion. PEG-10 polydimethylsiloxane has strong emulsifying ability, low electrolyte reactivity, and high thermal stability, enabling it to uniformly disperse oily and watery components, enhancing product stability and efficacy. It also possesses good moisturizing properties, forming a protective film on the skin surface to lock in moisture and keep the skin hydrated.

[0011] By compounding cetyl PEG / PPG-10 / 1 polydimethylsiloxane and PEG-10 polydimethylsiloxane in a certain mass ratio, the emulsifying properties of the emulsifier are adjusted to make it more suitable for specific oil-phase and water-phase systems, thereby improving the stability and performance of the foundation and achieving a better skin feel and a longer-lasting makeup effect.

[0012] Preferably, the stabilizer is composed of a first stabilizer and a second stabilizer in a mass ratio of 1-6:1; The first stabilizer is a mixture of HDI / trimethylolhexyl lactone crosspolymer and silica, and the second stabilizer is magnesium sulfate.

[0013] By adopting the above technical solution, the first stabilizer is composed of a mixture of HDI / trimethylolhexyl lactone crosspolymer and silica. The HDI / trimethylolhexyl lactone crosspolymer has excellent film-forming properties, capable of forming a uniform thin film on the skin surface, which helps improve the staying power of the foundation. It also acts as an anti-caking agent, preventing powder particles from agglomerating and making the foundation texture more delicate and even. Silica has good absorbency and a smooth feel, absorbing oil from the skin surface, reducing shine, and giving the skin a matte finish. It also improves the spreadability and blendability of the foundation, making the makeup more adherent and natural. When the two are mixed, the polymer microspheres formed by the HDI / trimethylolhexyl lactone crosspolymer work synergistically with the silica, enhancing both the stability of the foundation and its user experience.

[0014] The second stabilizer is magnesium sulfate. Magnesium sulfate can improve the low-temperature stability of the product, preventing excessive expansion of the internal phase due to excessive solidification of the aqueous phase caused by temperature drop, which would lead to demulsification. In addition, the solubility of magnesium sulfate emulsifier in the aqueous phase is reduced, thus allowing it to dissolve better in the oil phase. This ensures that the emulsifier has a suitable solubility in both the oil and water phases, resulting in a more uniform oil-water interface film, thereby improving the stability of the final product.

[0015] The first and second stabilizers are combined and used in a certain mass ratio to stabilize the foundation system, ensuring that the foundation maintains good texture and performance during storage and use, while also meeting its characteristics of being smudge-proof and leaving no residue.

[0016] Preferably, the film-forming agent is composed of a first film-forming agent, a second film-forming agent, and a third film-forming agent in a mass ratio of 0.6-5:1:1; The first film-forming agent is composed of polydimethylsiloxane and acrylate / polytrimethylsiloxane methacrylate copolymer, the second film-forming agent is composed of acrylate / polydimethylsiloxane copolymer and methylpolytrimethylsiloxane, and the third film-forming agent is trimethylsiloxysilicate.

[0017] By adopting the above technical solution, in the first film-forming agent, polydimethylsiloxane can form a breathable siloxane film, providing smoothness and spreadability. The acrylate / polytrimethylsiloxane methacrylate copolymer provides excellent film-forming properties and adhesion, firmly locking in the powder, and the resulting film is not prone to cracking. The first film-forming agent constitutes the foundation and framework of the makeup-holding film, with high flexibility and smoothness, ensuring that the makeup will not cake or crack.

[0018] In the second film-forming agent, the acrylate / polydimethylsiloxane copolymer provides robust film strength and adhesion, further enhancing its resistance to physical friction. Methyltrimethylsiloxane forms a three-dimensional network structure within the film, enhancing its hardness, abrasion resistance, and durability. The second film-forming agent constructs a robust and highly water- and abrasion-resistant outer shell.

[0019] The third film-forming agent is trimethylsiloxysilicate, which can more effectively encapsulate the coloring powder, making its surface hydrophobic and easier to disperse in the oil phase, improving the uniformity and adherence of the formula. It can deposit and form a film in the fine wrinkles and pores of the skin, as well as in the gaps between powder particles, playing a filling role and strengthening the waterproof ability of the entire film.

[0020] The first film-forming agent ensures the comfort and seamless application of the makeup; the second film-forming agent provides protection against external friction and the body's own oils; and the third film-forming agent refines the smoothness and adherence of the makeup in detail. Together, they form a smart, long-lasting makeup film that is both resilient and firm, breathable and waterproof, and both durable and lightweight.

[0021] Preferably, the emollient is composed of a first emollient, a second emollient, a third emollient, a fourth emollient, and a fifth emollient in a mass ratio of 1:1:0.6-15:1-20:0.02-1; The first emollient is composed of dioctyl carbonate and tocopherol (vitamin E), the second emollient is octyl polymethylsiloxane, the third emollient is polydimethylsiloxane, the fourth emollient is isododecane, and the fifth emollient is composed of caprylyl glycol and ethylhexylglycerin.

[0022] By adopting the above technical solution, the first emollient contains dioctyl carbonate, which has low viscosity, an extremely light and thin feel on the skin, is non-greasy, and has good skin permeability, helping other ingredients to spread and adhere better to the skin. Tocopherol is used to protect dioctyl carbonate and other oils from oxidation and rancidity, extending the product's shelf life.

[0023] The second emollient is octyl polymethylsiloxane, which has better compatibility with the skin's stratum corneum, reducing the powdery and heavy feeling of high-powder formulas. The third emollient is dimethicone, which provides an irreplaceable silky feel when applying the product, helping it to spread quickly on the skin. The fourth emollient is isododecane, a volatile solvent that, after evaporation, leaves behind a tight structure with a high concentration of powder and film-forming agents, allowing the makeup to quickly transform from a liquid to a powder state, thus fixing it and preventing it from easily transferring.

[0024] In the fifth moisturizing agent, caprylyl glycol and ethylhexylglycerin have excellent hygroscopic properties, which can reduce the dryness that may be caused by high absorbents and film-forming agents, improve the integration of the product with the stratum corneum of the skin, and make the makeup more adherent.

[0025] By combining the first, second, third, fourth, and fifth emollients, the foundation ensures that while maintaining its ultimate staying power, it still provides a comfortable, burden-free application experience and a flawless finish.

[0026] Preferably, the colorant is composed of a first colorant, a second colorant, a third colorant, and a fourth colorant in a mass ratio of 1:1:0.1-1:0.05-0.2; The first colorant consists of CI 77891, aluminum hydroxide, and triethoxyoctylsilane; the second colorant consists of CI 77492 and triethoxyoctylsilane; the third colorant consists of CI 77491 and triethoxyoctylsilane; and the fourth colorant consists of CI 77499 and triethoxyoctylsilane.

[0027] By adopting the above technical solution, the first colorant, the second colorant, the third colorant and the fourth colorant are combined to obtain a colorant that has the ability to formulate various complex colors. At the same time, each component makes the colorant have excellent dispersibility, good stability, smooth skin feel and long-lasting makeup effect.

[0028] Secondly, this application also provides a method for preparing a non-smudge-proof, flawless foundation, comprising the following steps: (1) Add distearate, lithium dimethylammonium montmorillonite, emulsifier, stabilizer, first film-forming agent, second film-forming agent, polymethylsilsesquioxane, and tocopheryl acetate to the oil phase pot and stir at a stirring speed of 20-40 rpm to make the mixture uniform for later use. (2) Grind the first emollient, the second emollient, and the colorant 3-4 times. The fineness of the color powder is 1-3μm. Then put it into the oil phase pot and stir at a stirring speed of 20-40rpm to make the material evenly mixed for later use. (3) Stir the third emollient, the third film-forming agent and the fourth emollient evenly, put them into the emulsification pot, heat to 75-80℃, homogenize at 2000-2500rpm, and set aside. (4) Add water, magnesium sulfate, propylene glycol and disodium EDTA to the aqueous phase pot, heat to 70-75℃ and stir at 600-800 rpm, set aside; (5) Add the mixture from step (4) and the mixture from step (3) to the mixture from step (2), homogenize at 2500-3000 rpm for 10 min; (6) Cool down to 45℃, add preservative and fifth emollient, homogenize at 2500-3000rpm for 5min, color check, vacuum, remove from the pot, and it is ready.

[0029] By adopting the above technical solution and preparation method, the operation is simple and helps to improve the antioxidant and makeup-holding properties of the prepared non-smudge-proof foundation. The resulting non-smudge-proof foundation has good makeup-holding properties.

[0030] In summary, this application has the following beneficial effects: 1. In this application, cetyl PEG / PPG-10 / 1 polydimethylsiloxane and PEG-10 polydimethylsiloxane are compounded in a certain mass ratio to adjust the emulsifying properties of the emulsifier, making it more suitable for specific oil and water phase systems, thereby improving the stability and performance of the foundation liquid and obtaining a better skin feel and a longer-lasting makeup effect.

[0031] 2. In this application, a first stabilizer and a second stabilizer are used in combination within a certain mass ratio to stabilize the foundation liquid system, ensuring that the foundation liquid maintains good texture and performance during storage and use, while also meeting its product characteristics of being smudge-proof and leaving no residue.

[0032] 3. In this application, multiple film-forming agents work together to form a smart makeup-holding film that is both tough and hard, breathable and waterproof, and both firm and thin. Detailed Implementation

[0033] The present application will be further described in detail below with reference to the embodiments.

[0034] The raw materials used in the examples and comparative examples are all commercially available. Example

[0035] Example 1 A non-smudge-proof, traceless foundation, comprising the following ingredients by weight percentage: 0.5% distearate dimethylammonium montmorillonite, 7% emulsifier, 4% stabilizer, 5% film-forming agent, 3% polymethyl silsesquioxane, 0.05% tocopheryl acetate, 10.1% emollient, 11.5% colorant, 52.35% water, 5% propylene glycol, 1% disodium EDTA, and 0.5% preservative, totaling 100 kg. The distearate dimethylammonium montmorillonite was purchased from Elementis Specialties, Inc.; the cetyl PEG / PPG-10 / 1 polydimethylsiloxane was purchased from Shanghai Jiahe Chemical Co., Ltd.; the polymethyl silsesquioxane was purchased from Momentive (Shanghai) Trading Co., Ltd.; the propylene glycol was purchased from Shell Chemicals; the disodium EDTA was purchased from Noryon Chemicals (Ningbo) Co., Ltd.; and the preservative was purchased from Ashland LLC.

[0036] The emulsifier consisted of cetyl PEG / PPG-10 / 1 polydimethylsiloxane and PEG-10 polydimethylsiloxane in a mass ratio of 1:0.375. PEG-10 polydimethylsiloxane was purchased from Shin-Etsu Chemical Co., Ltd. Tocopheryl acetate was purchased from DSM Nutritional Products Ltd.

[0037] The stabilizer consists of a first stabilizer and a second stabilizer in a mass ratio of 6:1.

[0038] The first stabilizer is a mixture of HDI / trimethylolpropionic acid crosslinking polymer and silica in a mass ratio of 98:2. The second stabilizer is magnesium sulfate. The first stabilizer was purchased from TOSHIKIPIGMENT CO.,LTD. The magnesium sulfate was purchased from Xilong Scientific Co., Ltd.

[0039] The film-forming agent consists of a first film-forming agent, a second film-forming agent, and a third film-forming agent in a mass ratio of 5:1:1. The first film-forming agent was purchased from Dow (Zhangjiagang) Investment Co., Ltd., and the second film-forming agent was purchased from Hangzhou Shenhu Technology Co., Ltd. The first film-forming agent consists of polydimethylsiloxane and acrylate / polytrimethylsiloxane methacrylate copolymer in a mass ratio of 0.6:0.4. The second film-forming agent consists of acrylate / polydimethylsiloxane copolymer and methylpolytrimethylsiloxane in a mass ratio of 0.4:0.6. The third film-forming agent is trimethylsiloxysilicate. Trimethylsiloxysilicate was purchased from Wacker Chemie (China) Co., Ltd.

[0040] The emollient consists of five emollients in a mass ratio of 1:1:0.6:20:1: a first emollient, a second emollient, a third emollient, a fourth emollient, and a fifth emollient. The first emollient was purchased from BASF (China) Co., Ltd., and octyl polymethylsiloxane was purchased from Momentive (Shanghai) Trading Co., Ltd. Polydimethylsiloxane was purchased from Jiangxi Lanxing Xinghuo Organosilicon Co., Ltd. The fifth emollient was purchased from Ashland LLC.

[0041] The first emollient consists of dioctyl carbonate and tocopherol (vitamin E) in a mass ratio of 99.97:0.03; the second emollient is octyl polymethylsiloxane; the third emollient is polydimethylsiloxane; the fourth emollient is isododecane; and the fifth emollient consists of octyl glycol and ethylhexylglycerin in a mass ratio of 70:30. Isododecane was purchased from Ineos Singapore Pte. Ltd.

[0042] The colorant consists of a first colorant, a second colorant, a third colorant, and a fourth colorant in a mass ratio of 1:1:1:0.2. The first, second, third, and fourth colorants were all purchased from Sanhao Cosmetic Materials (Suzhou) Co., Ltd.

[0043] The first colorant consists of CI 77891, aluminum hydroxide, and triethoxyoctylsilane in a mass ratio of 96.5:2.5:1; the second colorant consists of CI 77492 and triethoxyoctylsilane in a mass ratio of 99:1; the third colorant consists of CI 77491 and triethoxyoctylsilane in a mass ratio of 99:1; and the fourth colorant consists of CI 77499 and triethoxyoctylsilane in a mass ratio of 99:1.

[0044] The preservative consists of phenoxyethanol and ethylhexylglycerin in a mass ratio of 90:10.

[0045] The above-mentioned method for preparing the non-smudge-proof foundation includes the following steps: (1) Add distearate, lithium dimethylammonium montmorillonite, emulsifier, stabilizer, first film-forming agent, second film-forming agent, polymethyl silsesquioxane, and tocopheryl acetate to the oil phase pot, stir, and stir at a stirring speed of 30 rpm to make the material evenly mixed for later use. (2) Grind the first emollient, the second emollient, and the colorant 4 times. The fineness of the color powder is 1μm. Then put it into the oil phase pot and stir at a stirring speed of 30rpm to make the material evenly mixed for later use. (3) Stir the third emollient, the third film-forming agent and the fourth emollient evenly, put them into the emulsification pot, heat to 80°C, homogenize at 2300 rpm, and set aside. (4) Add water, magnesium sulfate, propylene glycol and disodium EDTA to the aqueous phase pot, heat to 72°C and stir at 700 rpm for later use; (5) Add the mixture from step (4) and the mixture from step (3) to the mixture from step (2), homogenize at 2800 rpm for 10 min; (6) Cool down to 45°C, add preservative and fifth emollient, homogenize at 2800rpm for 5min, color check, vacuum, remove from the pot, and it is ready.

[0046] Example 2 A non-smudge-proof, traceless foundation liquid differs from Example 1 in that, by weight percentage, it comprises the following ingredients: 1% distearate dimethylammonium lithium montmorillonite, 2% emulsifier, 1.5% stabilizer, 6% film-forming agent, 0.5% polymethylsilsesquioxane, 1% tocopheryl acetate, 11% emollient, 24.95% colorant, 50% water, 1% propylene glycol, 0.05% disodium EDTA, and 1% preservative.

[0047] Example 3 A non-smudge-proof, traceless foundation liquid differs from Example 1 in that the emulsifier is composed of cetyl PEG / PPG-10 / 1 polydimethylsiloxane and PEG-10 polydimethylsiloxane in a mass ratio of 1:6.

[0048] The stabilizer consists of a first stabilizer and a second stabilizer in a mass ratio of 1:1.

[0049] The film-forming agent consists of a first film-forming agent, a second film-forming agent, and a third film-forming agent in a mass ratio of 0.6:1:1.

[0050] The emollient consists of a first emollient, a second emollient, a third emollient, a fourth emollient, and a fifth emollient in a mass ratio of 1:1:15:1:0.02.

[0051] The colorant consists of a first colorant, a second colorant, a third colorant, and a fourth colorant in a mass ratio of 1:1:0.1:0.05.

[0052] Example 4 A non-smudge-proof, traceless foundation liquid differs from Example 1 in that the emulsifier is composed of cetyl PEG / PPG-10 / 1 polydimethylsiloxane and PEG-10 polydimethylsiloxane in a mass ratio of 1:8.

[0053] Example 5 A non-smudge-proof, traceless foundation liquid differs from Example 1 in that the stabilizer consists of a first stabilizer and a second stabilizer in a mass ratio of 9:1.

[0054] Example 6 A non-smudge-proof, traceless foundation liquid differs from Example 1 in that the film-forming agent is composed of a first film-forming agent, a second film-forming agent, and a third film-forming agent in a mass ratio of 0.1:1:1.

[0055] Example 7 The difference between this non-smudge-proof, flawless foundation and Example 1 is that the emollient is composed of a first emollient, a second emollient, a third emollient, a fourth emollient, and a fifth emollient in a mass ratio of 1:1:0.2:22:1.5.

[0056] Example 8 The difference between this non-smudge-proof foundation liquid and Example 1 is that the colorant is composed of a first colorant, a second colorant, a third colorant, and a fourth colorant in a mass ratio of 1:1:3:0.9.

[0057] Comparative Example Comparative Example 1 A non-smudge-proof, traceless foundation, using the foundation 1 in patent CN 119656083A.

[0058] Performance testing The smudge-proof, flawless foundation prepared in Examples 1-8 and Comparative Example 1 was subjected to performance testing. 1. Ninety volunteer subjects were selected, and five males and five females were randomly assigned to each group, for a total of 10 subjects. The volunteers in each group applied the foundation liquid of the above-described embodiment and the prepared example to their faces. The usage was scored on the 15th hour (out of 10 points). The average score of each group was taken to test the foundation liquid's makeup-holding ability, spreadability, and oil absorption and control effect.

[0059] 2. Stability test: Zeta potential test; The foundation solutions from the examples and comparative examples were diluted 20-fold with a 20% ethanol-water solution, stirred at 35°C and 200 rpm for 20 minutes, cooled to room temperature, and allowed to stand for 1 hour. The Zeta potential of each diluted composition was tested; after the test, the Zeta potential of each diluted composition was tested again after being placed at room temperature for two weeks. A larger absolute value of the potential indicates greater stability. The test results are shown in Table 1.

[0060] Table 1 Test data for the examples and comparative examples As shown in Table 1, the non-smudge-proof and seamless foundation prepared in Examples 1-2 of this application has good makeup-holding effect. Specifically, Example 1 scored 9.7 in makeup-holding ability, 9.5 in spreadability, and 9.5 in oil absorption and control, with a Zeta potential of -48.54 mV. After two weeks, the Zeta potential was -46.27 mV. This demonstrates that the foundation prepared in this application has a fine texture and good chemical stability, achieving both makeup-holding and non-smudge-proof effects, making it more adherent to the skin.

[0061] Example 3 further specifies the proportions of each raw material in the emulsifier, stabilizer, film-forming agent, emollient, and colorant. As can be seen from Table 1, Example 3 has a makeup holding power score of 9.9, an spreadability score of 9.8, an oil absorption and control effect score of 9.9, a zeta potential of -48.62mV, and a zeta potential of -46.35mV after two weeks. As can be seen, the makeup-holding ability, spreadability, oil absorption and control effect, Zeta potential, and Zeta potential data after two weeks of Example 3 are significantly better than those of Examples 1-2. This indicates that adjusting the emulsifier ratio improves the stability and performance of the foundation, resulting in a better skin feel and a longer-lasting makeup effect; it stabilizes the foundation system, ensuring that the foundation maintains good texture and performance during storage and use, while meeting its characteristics of being smudge-proof and leaving no trace; the film-forming agents work together to form a smart makeup-holding film that is both tough and hard, breathable and waterproof, firm yet lightweight; the moisturizers ensure that the foundation provides a comfortable, burden-free application experience and finishing effect while having ultimate makeup-holding power; and the colorants have excellent dispersibility, good stability, smooth skin feel, and long-lasting makeup effect.

[0062] Example 4 altered the mass ratio of cetyl PEG / PPG-10 / 1 polydimethylsiloxane and PEG-10 polydimethylsiloxane in the emulsifier. Table 1 shows that Example 4 exhibited significantly worse makeup-holding power, spreadability, oil absorption and control, Zeta potential, and Zeta potential after two weeks compared to Examples 1-3. This indicates that by compounding cetyl PEG / PPG-10 / 1 polydimethylsiloxane and PEG-10 polydimethylsiloxane at a specific mass ratio, the emulsifying properties of the emulsifier are adjusted to better suit specific oil-phase and water-phase systems, thereby improving the stability and performance of the foundation, resulting in a better skin feel and longer-lasting makeup effect.

[0063] Example 5 altered the mass ratio of the first and second stabilizers in the stabilizer. Table 1 shows that Example 5 exhibited significantly worse results than Examples 1-3 in terms of makeup holding power, spreadability, oil absorption and control, Zeta potential, and Zeta potential after two weeks. This indicates that using a combination of the first and second stabilizers within a certain mass ratio stabilizes the foundation system, ensuring that the foundation maintains good texture and performance during storage and use, while also meeting its characteristics of being smudge-proof and leaving no residue.

[0064] Example 6 altered the mass ratio of the first, second, and third film-forming agents in the film-forming agent. Table 1 shows that Example 6 exhibited significantly worse makeup-holding ability, spreadability, oil absorption and control, Zeta potential, and Zeta potential data after two weeks compared to Examples 1-3. This indicates that the first film-forming agent ensured makeup comfort and seamless spreadability, the second film-forming agent provided protection against external friction and the body's own oils, and the third film-forming agent refined the smoothness and adherence of the makeup. Together, they constituted a smart makeup-holding film that was both resilient and firm, breathable and waterproof, and both durable and lightweight.

[0065] Example 7 altered the mass ratio of the first, second, third, fourth, and fifth emollients in the emollient. Table 1 shows that Example 7 exhibited significantly worse makeup-holding power, spreadability, oil absorption and control, Zeta potential, and Zeta potential after two weeks compared to Examples 1-3. This indicates that the combination of the first, second, third, fourth, and fifth emollients ensured that the foundation, while possessing exceptional makeup-holding power, still provided a comfortable, lightweight application experience and a flawless finish.

[0066] Example 8 altered the mass ratio of the first, second, third, and fourth colorants in the colorant. Table 1 shows that Example 8 exhibited significantly worse makeup-holding ability, spreadability, oil absorption and control, Zeta potential, and Zeta potential after two weeks compared to Examples 1-3. This indicates that the combination of the first, second, third, and fourth colorants results in a colorant capable of producing various complex colors. Furthermore, each component contributes to the colorant's excellent dispersibility, good stability, smooth skin feel, and long-lasting makeup effect.

[0067] Comparative Example 1 uses a foundation liquid 1 from the prior art. As can be seen from Table 1, the performance test results of Comparative Example 1 in terms of makeup holding ability, spreadability, oil absorption and control effect, Zeta potential, and Zeta potential after two weeks are significantly worse than those of Examples 1-3. This indicates that the various components in this application work synergistically to improve the overall performance of the foundation liquid, firmly fix the foundation, and prevent the makeup from being rubbed off or fading.

[0068] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A non-smudge-proof, traceless foundation liquid, characterized in that, By weight percentage, it includes the following raw materials: distearate, lithium dimethylammonium montmorillonite 0.5-1%, emulsifier 2-7%, stabilizer 1.5-4%, film-forming agent 5-15%, polymethylsilsesquioxane 0.5-3%, tocopheryl acetate 0.05-1%, emollient 10.1-46%, colorant 11.5-26%, water 20-50%, propylene glycol 1-5%, disodium EDTA 0.05-1%, and preservative 0.5-1%.

2. The non-smudge-proof, traceless foundation liquid according to claim 1, characterized in that, The emulsifier is composed of cetyl PEG / PPG-10 / 1 polydimethylsiloxane and PEG-10 polydimethylsiloxane in a mass ratio of 1:0.375-6.

3. The non-smudge-proof, traceless foundation liquid according to claim 1, characterized in that, The stabilizer is composed of a first stabilizer and a second stabilizer in a mass ratio of 1-6:1; The first stabilizer is a mixture of HDI / trimethylolhexyl lactone crosspolymer and silica, and the second stabilizer is magnesium sulfate.

4. The non-smudge-proof, traceless foundation liquid according to claim 1, characterized in that, The film-forming agent is composed of a first film-forming agent, a second film-forming agent, and a third film-forming agent in a mass ratio of 0.6-5:1:1; The first film-forming agent is composed of polydimethylsiloxane and acrylic (ester) / polytrimethylsiloxane methacrylate copolymer, the second film-forming agent is composed of acrylic (ester) / polydimethylsiloxane copolymer and methylpolytrimethylsiloxane, and the third film-forming agent is trimethylsiloxysilicate.

5. The non-smudge-proof, traceless foundation liquid according to claim 1, characterized in that, The emollient is composed of a first emollient, a second emollient, a third emollient, a fourth emollient, and a fifth emollient in a mass ratio of 1:1:0.6-15:1-20:0.02-1. The first emollient is composed of dioctyl carbonate and tocopherol; the second emollient is octyl polymethylsiloxane; the third emollient is polydimethylsiloxane; the fourth emollient is isododecane; and the fifth emollient is composed of caprylyl glycol and ethylhexylglycerin.

6. The non-smudge-proof, traceless foundation liquid according to claim 1, characterized in that, The colorant is composed of a first colorant, a second colorant, a third colorant, and a fourth colorant in a mass ratio of 1:1:0.1-1:0.05-0.2; The first colorant consists of CI 77891, aluminum hydroxide, and triethoxyoctylsilane; the second colorant consists of CI 77492 and triethoxyoctylsilane; the third colorant consists of CI 77491 and triethoxyoctylsilane; and the fourth colorant consists of CI 77499 and triethoxyoctylsilane.

7. The method for preparing a non-smudge-proof, traceless foundation liquid according to claim 1, characterized in that, Includes the following steps: (1) Add distearate, lithium dimethylammonium montmorillonite, emulsifier, stabilizer, first film-forming agent, second film-forming agent, polymethylsilsesquioxane, and tocopheryl acetate to the oil phase pot and stir at a stirring speed of 20-40 rpm to make the mixture uniform for later use. (2) Grind the first emollient, the second emollient, and the colorant 3-4 times. The fineness of the color powder is 1-3μm. Then put them into the oil phase pot and stir at a stirring speed of 20-40rpm to make the mixture uniform for later use. (3) Stir the third emollient, the third film-forming agent and the fourth emollient evenly, put them into the emulsification pot, heat to 75-80℃, homogenize at 2000-2500rpm, and set aside; (4) Add water, magnesium sulfate, propylene glycol and disodium EDTA to the aqueous phase pot, heat to 70-75℃ and stir at 600-800 rpm, and set aside. (5) Add the mixture from step (4) and the mixture from step (3) to the mixture from step (2), homogenize at 2500-3000 rpm for 10 min; (6) Cool down to 45°C, add preservative and fifth emollient, homogenize at 2500-3000 rpm for 5 minutes, check color, vacuum, remove from the pot, and it is ready.

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