High-temperature stable emulsified foundation cream and preparation method thereof

Abstract

The invention relates to the field of cosmetics, and particularly discloses high-temperature stable emulsified foundation cream and a preparation method thereof. The invention relates to a high-temperature stable type emulsified foundation cream which comprises the following raw materials in percentage by weight: 1-4% of an emulsifier A, 0.5-1% of an emulsifier B, 10-25% of grease, 0.1-3% of a thickener, 0.5-20% of a film-forming agent, 1-9% of a wax forming agent, 3.2-25% of toner, 0.5-2% of an emulsion stabilizer, 2-20% of a humectant, 0.5-1% of a preservative and the balance of a solvent, the wax forming agent is selected from at least two of synthetic wax, microcrystalline wax, paraffin, beewax, carnauba wax and candelilla wax. The foundation cream has the advantages of being stable in summer, not prone to migration, good in makeup maintaining effect, high in moistening degree, natural and fine.

Description

Technical Field

[0001] The present application relates to the field of cosmetic technology, and more specifically, to a high-temperature stable emulsified foundation cream and a preparation method thereof. Background Art

[0002] With the booming cosmetics market, color cosmetics have become a significant player in the industry. Base makeup, a key component of the color cosmetics category, primarily includes liquid foundation, BB cream, cream foundation, and stick foundation. It conceals imperfections, brightens, and evens out skin tone. Solid base makeup is popular among consumers due to its diverse appearance, ease of use, and versatility. Traditional solid base makeup products primarily include pure oil-wax systems, pressed powder systems, and solid cream foundation systems. Pure oil-wax systems contain base oils and solid waxes and are commonly used in lipsticks and foundations, offering advantages such as high moisturizing properties and a strong glossy finish. Pressed powder systems primarily contain pigments, fillers, and binders, and are typically supplied with a puff. They offer high coverage and excellent oil control. Solid cream foundations combine the advantages of both, overcoming the overly moisturizing and sticky nature of pure oil-wax systems and the drying and cakey nature of pressed powder systems.

[0003] Currently, most foundation creams on the market are pure oil systems. The texture of pure oil-based foundation creams is relatively thick, easily dull, and the makeup feel is obvious. When the pure oil-based paste is mixed with oily skin, it is easy to cause floating powder and caking makeup effects. In the prior art, the Chinese invention patent document with application number CN2018102876136 discloses an oil-in-water type solid foundation cream, which includes the following components in weight percentage: liquid oil 20-40%, solid wax 1-8%, emulsifier 0.5-5%, color powder 5-20%, powder filler 1-10%, moisturizer 5-15%, whitening agent 1-5%, and deionized water to 100%. This oil-in-water type solid foundation cream has a high proportion of oil. When combined with solid wax, it is easy to cause closed comedones and acne (especially for acne-prone and sensitive skin). In addition, the paste is prone to shifting in summer, and the makeup of combination skin is prone to appear mottled, which tests the makeup technique. In view of the above-mentioned related technologies, the inventors found that it is urgent to provide a foundation cream with a clear texture, a stable paste that is not easy to shift in summer, and a long-lasting makeup. Summary of the Invention

[0004] In order to achieve a long-lasting and clear makeup look in summer, the present application provides a high-temperature stable emulsified foundation cream and a preparation method thereof.

[0005] In a first aspect, the present application provides a high-temperature stable emulsified foundation cream, which adopts the following technical solution: A high-temperature stable emulsified foundation cream, comprising the following components by weight: 1-4% emulsifier A, 0.5-1% emulsifier B, 10-25% oil, 0.1-3% thickener, 0.5-20% film former, 1-9% wax forming agent, 3.2-25% color powder, 0.5-2% emulsion stabilizer, 2-20% moisturizer, 0.5-1% preservative, and the balance being solvent; The wax forming agent is selected from at least two of synthetic wax, microcrystalline wax, paraffin, beeswax, carnauba wax, and candelilla wax; the oil is selected from at least one of cyclopentasiloxane, trimethyl pentaphenyl trisiloxane, caprylic / capric triglyceride, caprylyl polymethicone, isononyl isononanoate, dicaprylyl carbonate, and diphenylsiloxyphenyl polytrimethicone.

[0006] Since the foundation cream of the pure oil system is mainly composed of various oils, the oils are fluid. In the high temperature environment in summer, the surface temperature of the skin rises, and it is easy to sweat and produce oil. The fluidity of the oil is enhanced, causing the foundation cream to migrate from the original application position to other parts and wash away the ingredients in the foundation cream, which can easily cause uneven makeup, mottled makeup, etc., and requires frequent removal of makeup, which cannot meet the long-term makeup needs. By adopting the above technical solution, by using a combination of oils and wax forming agents and reducing the oil content, a foundation cream with strong temperature resistance is made; the wax forming agent plays a role in stabilizing the structure in the foundation cream, and it forms a film with a certain hardness and toughness on the skin surface to restrict the flow of oil, while the film-forming agent can further form a uniform and dense thin film on the skin. This film It has good adhesion and anti-migration properties, can fix the ingredients in the foundation cream, reduce the migration of the foundation cream under high temperatures in summer, and effectively block the erosion of sweat and oil, making the makeup more lasting and neat. The emulsifier makes the oil and water phase components mix evenly to form a stable emulsion system, enhances the compatibility and adhesion of the foundation cream with the skin, and makes the foundation cream have better moisturizing and ductility. In combination with moisturizers, it can further enhance the moisturizing effect. The emulsifier also helps the color powder to be evenly dispersed in the system, so that the foundation cream can better fit the skin and cover blemishes. The thickener can increase the viscosity of the foundation cream, so that the color powder can better adhere to the skin surface, forming a more stable coating on the skin surface, prolonging the makeup time, increasing the concealing power, and keeping the makeup natural and light.

[0007] The synthetic wax and microcrystalline wax in the wax molding agent have a high melting point and a delicate structure, which can significantly improve the high-temperature resistance and paste stability of the foundation cream, prevent soft collapse at high temperatures, maintain flexibility at the same time, avoid cracking, reduce the problems of melting and makeup removal in summer, enhance the film-forming property, form a waterproof barrier, and the crystal structure of the microcrystalline wax is small, which can achieve a smooth texture, reduce the granular feeling, improve the paste ductility, and enhance the smoothness; while paraffin wax and natural waxes (beeswax, palm wax and candelilla wax) have medium high-temperature resistance and can lock in oil, indirectly delaying water loss.

[0008] In the oil, cyclopentasiloxane is volatile and can quickly volatilize to form a thin and breathable film, which has excellent spreading property and lubricity, enables the foundation cream to spread evenly on the skin, without caking or powder-caking phenomenon, making the makeup smoother and more delicate. The film formed by trimethylpentaphenyltrisiloxane has good flexibility and anti-friction property, can prevent the foundation cream from falling off easily, and has a certain degree of moisturizing property, can prevent skin water loss, and keep the skin moist. The texture of triglyceride caprylate / caprate is delicate, which can make the foundation cream softer and smoother, and is easily absorbed by the skin, supplement the oil required by the skin, make the skin softer and smoother, and has a light texture, will not bring too much burden to the skin, and can form a uniform oil film on the skin surface, reduce water evaporation, keep the skin moist, and can also fix the foundation cream to a certain extent, prevent it from peeling and makeup removal due to skin dryness; Octyl polymethylsiloxane can quickly spread on the skin surface and form a smooth and lasting film, effectively blocking the erosion of external factors (such as sweat, oil) on the foundation cream, improving the durability of the makeup, and can also lock in skin moisture, keep the skin moist, make the makeup smoother and more delicate. Isononyl isononanoate has low viscosity and high spreading property, has good water resistance and oil resistance, can effectively prevent the foundation cream from dissolving and falling off due to sweat or skin oil secretion, and enhance the makeup holding effect. Dioctyl carbonate and diphenylsilanoxy phenyl polytrimethylsiloxane have a refreshing texture, can be quickly absorbed by the skin, provide moisture for the skin, and will not bring a greasy feeling to the skin, making the skin feel fresh and moist, helping to improve the moisturizing degree of the foundation cream, increasing the smoothness of the foundation cream, making it more fluent when applied on the skin, reducing powder-caking and caking phenomena, and making the makeup more delicate and uniform.

[0009] Optionally, the foundation cream comprises the following raw materials in weight percentages: emulsifier A 3%, emulsifier B 1%, oil 25%, thickener 2%, film-forming agent 5%, wax molding agent 9%, color powder 20%, emulsification stabilizer 1%, moisturizer 19%, preservative 1%, and the balance is solvent.

[0010] Optionally, the wax molding agent comprises synthetic wax and microcrystalline wax in a mass ratio of 5:2-4.

[0011] By adopting the above technical solution, the synthetic wax has a specific molecular structure and physical properties, forming a solid skeleton structure in the foundation cream, and the microcrystalline wax has good flexibility and ductility, which can fill the gaps in the skeleton formed by the synthetic wax, making the entire wax forming agent system tighter and more stable, better adhering to the skin surface, tightly combining with the skin, and not easy to come off. Moreover, the combination of microcrystalline wax and synthetic wax can adjust the texture of the foundation cream, so that the foundation cream can be evenly applied on the skin to form a uniform film, avoiding uneven application. Moreover, this film has waterproof and sweat-proof effects, can reduce the erosion of sweat and oil, and extend the makeup holding time.

[0012] Optionally, the oil comprises cyclopentasiloxane, trimethyl pentaphenyl trisiloxane and caprylic / capric triglyceride in a mass ratio of 10-12:10-14:1-3.

[0013] By adopting the above technical solution, cyclopentasiloxane is highly volatile and evaporates quickly after application, forming a thin and breathable film on the skin surface, reducing the migration of foundation cream due to excessive oil. The film formed by trimethyl pentaphenyl trisiloxane is flexible and anti-friction, can withstand daily friction, and prevent the foundation cream from falling off. The two work together to enhance the adhesion of the foundation cream on the skin and effectively prolong the makeup holding time. Caprylic / capric triglyceride forms a uniform oil film on the skin, reducing water evaporation, keeping the skin moisturized, and also blocking the erosion of the foundation cream by external moisture and oil. After the three oils are compounded, the foundation cream can better maintain the integrity and durability of the makeup when facing external factors such as sweat and oil; and caprylic / capric triglyceride is similar to human sebum, easily absorbed by the skin, can deeply moisturize the skin, and make the skin smooth and soft. Although cyclopentasiloxane itself has a low moisturizing degree, it can change the skin's touch and help other moisturizing ingredients to better penetrate Pentamethyl Pentaphenyl Trisiloxane also has moisturizing properties after penetrating into the skin. The combination of the three provides moisture and hydration to the skin from different levels; Cyclopentasiloxane has excellent spreadability and lubricity, Trimethyl Pentaphenyl Trisiloxane can reduce the viscosity of the foundation cream, making the application process smoother, Caprylic / Capric Triglyceride has a fine texture and can improve the texture of the foundation cream. The combination of the three gives the foundation cream a silky application feel, enhancing the usage experience, and after evaporation of Cyclopentasiloxane, it will not leave a greasy feeling on the skin surface, and the film formed by Trimethyl Pentaphenyl Trisiloxane is also relatively refreshing. Although Caprylic / Capric Triglyceride can moisturize the skin, it has a light texture. This compound oil makes the skin feel refreshed and comfortable after applying the foundation cream; these three oils can maintain relatively stable performance under different temperature conditions, and are not prone to stratification, deterioration and other problems due to temperature changes, so that the foundation cream can maintain good use effects under various environmental conditions.

[0014] Optionally, the toner includes toner No. 1, toner No. 2 and toner No. 3 in a mass ratio of 15:3:2, toner No. 1 includes titanium dioxide, red iron oxide, yellow iron oxide and black iron oxide, toner No. 2 is a mixture of titanium dioxide, aluminum hydroxide and sodium stearoyl glutamate; toner No. 3 is a mixture of titanium dioxide, trimethylsiloxysilicate and aluminum hydroxide.

[0015] By adopting the above technical solution, a mixture of titanium dioxide and red iron oxide, yellow iron oxide and black iron oxide is used as color powder No. 1, and is matched with color powder No. 2 and color powder No. 3. The main component of the color powder is titanium dioxide, which can effectively scatter and reflect light to cover skin blemishes such as acne, color plates, dark circles, etc. Iron oxide red, yellow and black can be precisely compounded according to the needs of different skin colors to neutralize the color of blemishes on the skin and make the skin look cleaner and flawless. Compared with a single color powder, the compound color powder can comprehensively cover different types of blemishes and improve the uniformity of skin color, presenting a natural and healthy skin color, making the skin look smoother and more delicate, and high-quality color powders such as titanium dioxide have a smaller particle size and good dispersibility. Good dispersibility helps the color powder to better fit the skin surface, making the foundation cream smoother when applied.

[0016] In addition, in color powder No. 2, titanium dioxide is treated with aluminum hydroxide and sodium stearoyl glutamate. Sodium stearoyl glutamate is used as a lipophilic surface treatment agent. The long-chain alkyl group in its molecular structure is combined with the surface of titanium dioxide, and the glutamate part provides a certain hydrophilicity, which reduces the surface energy of the color powder, reduces the van der Waals force between particles, avoids agglomeration, and enables titanium dioxide to be more evenly dispersed in the oil phase, reducing agglomeration and precipitation. Aluminum hydroxide is inorganically coated on the surface of titanium dioxide to form a dense film, physically isolating the particles to further prevent agglomeration, and synergizing with sodium stearoyl glutamate to form an organic-inorganic composite treatment layer, which improves dispersion stability, makes the dispersion paste uniform in texture, has no graininess, and makes the makeup more delicate. It also gives the color powder a certain smoothness, makes it smoother to apply, and avoids dryness and powder sticking.

[0017] In color powder No. 3, titanium dioxide is treated with trimethylsiloxysilicate and aluminum hydroxide. Trimethylsiloxysilicate has a strong hydrophobic modification effect and can form a hydrophobic layer on the surface of titanium dioxide, making it easier to disperse while reducing the van der Waals force between particles. Aluminum hydroxide prevents particle agglomeration through physical coating. Trimethylsiloxysilicate forms a breathable and hydrophobic film on the skin, which can enhance the powder's high waterproof and sweat resistance, and make the color powder have a smooth touch, improve ductility and smoothness, making it more suitable for use in summer or for oily skin. Aluminum hydroxide can absorb excess oil and help extend the makeup's lasting time.

[0018] Optionally, the mass ratio of titanium dioxide, yellow iron oxide, red iron oxide and black iron oxide in the No. 1 toner is 11:3:0.8:0.2, and the titanium dioxide in the No. 1 toner is pretreated with triethoxyoctylsilane and aluminum hydroxide.

[0019] By adopting the above technical solution, the above-mentioned combination of titanium dioxide, red, yellow and black iron oxide can make the color powder have a better concealing effect, while even out the skin tone and make the makeup look more natural and clear; and after titanium dioxide is treated with triethoxycaprylylsilane and aluminum hydroxide, the dispersibility of titanium dioxide is improved, which can make the foundation cream delicate, smooth, soft and natural.

[0020] Optionally, the emulsifier A is selected from at least one of cetyl PEG / PPG-10 / 1 polydimethylsiloxane, PEG-9 polydimethylsiloxyethyl polydimethylsiloxane, lauryl PEG-9 polydimethylsiloxyethyl polydimethylsiloxane, and lauryl PEG-10 tris(trimethylsiloxy)silylethyl polymethylsiloxane; The emulsifier B is selected from at least one of polyglyceryl-3 diisostearate, polyglyceryl-4 isostearate, sorbitan isostearate, sorbitan sesquioleate, and the like.

[0021] By adopting the above technical solution, the compound of emulsifier A and emulsifier B can match the oil and water in the foundation cream to form a more stable emulsion, making the foundation cream less likely to leak oil when stored at high temperatures or for long periods of time. In addition, the combination of the two emulsifiers can make the foundation cream less likely to cake, making the cream lighter and achieving a smooth and creamy texture.

[0022] Optionally, emulsifier A is cetyl PEG / PPG-10 / 1 polydimethylsiloxane, and emulsifier B is sorbitan isostearate.

[0023] By adopting the above technical solution, cetyl PEG / PPG-10 / 1 polydimethylsiloxane is a silicone oil non-ionic emulsifier with a good balance of lipophilicity and hydrophilicity, which can form a stable interfacial film between the water phase and the oil phase. Sorbitan isostearate is also a non-ionic emulsifier. The hydrophilic and lipophilic groups in its molecular structure can fully interact with the oil and water phases to enhance the stability of the emulsion. The two are used together to form a more stable and delicate emulsion system, so that the oil phase and the water phase in the foundation cream are evenly mixed, and the phenomenon of oil-water separation is not easy to occur, thereby ensuring the quality stability of the foundation cream during storage and use; cetyl PEG / PPG-10 / 1 polydimethicone has excellent lubricity and spreadability, and can form a smooth, flexible and elastic film on the skin surface, making the foundation cream smoother to apply, reducing the friction during application, and making the foundation cream better fit the skin surface, less likely to cause makeup to come off, cake, etc. Sorbitan isostearate can improve the texture of the foundation cream, making it more delicate and soft, and adjust the viscosity and adhesion of the foundation cream, making it more closely integrated with the skin. The combination of the two can make the foundation cream have a more silky skin feel, make the skin more comfortable and non-greasy after application, enhance skin adhesion, and make the makeup more long-lasting and natural.

[0024] Optionally, the thickener is selected from at least one of silica dimethyl silylate and disteardimethylammonium hectorite.

[0025] By adopting the above technical solution, dimethyl silylate silica has strong hydrophobicity and can form a breathable and waterproof film on the skin surface, reducing the damage of sweat and sebum to the makeup. It is especially suitable for mixed oily skin in summer. The surface of silica particles is smooth, which can reduce the friction between powders, making the foundation cream lighter and silkier when applied, avoiding a heavy feeling. At the same time, it can also absorb excess oil and maintain a matte makeup effect; disteardimonium hectorite has excellent thixotropic properties, which can make wet powder cream easy to spread, and the positively charged ammonium group can weakly combine with negatively charged skin, enhancing skin adhesion and reducing powder floating.

[0026] Optionally, the film-forming agent is selected from at least one of trimethylsiloxysilicate, polyvinyl pyrrolidone, hydrogenated (styrene / methylstyrene / indene) copolymer, polymethylsilsesquioxane, and acrylic acid (ester) / polydimethylsiloxane copolymer.

[0027] By adopting the above technical solution, trimethylsiloxysilicate has hydrophobicity and breathability, and can form a flexible waterproof film to resist sweat and sebum dissolution while avoiding the feeling of stuffiness. Polyvinylpyrrolidone combines with skin or water through hydrogen bonds to enhance immediate skin adhesion, reduce powder floating, and improve the problem of powder sticking in dry areas.

[0028] Optionally, the preservative is selected from at least one of caprylyl glycol, p-hydroxyacetophenone, ethylhexylglycerin and 1,2-hexanediol; The moisturizing agent is selected from at least one of butylene glycol, glycerin, propylene glycol and dipropylene glycol; The emulsion stabilizer is selected from at least one of sodium chloride and magnesium sulfate.

[0029] By adopting the above technical solution, preservatives can increase the antibacterial effect of foundation cream, and preservatives can prevent the product from being contaminated by microorganisms during storage and use, extend the shelf life of the product, and ensure the quality and safety of the product; using ingredients such as glycerin and butylene glycol as moisturizers can continuously replenish moisture to the skin, increase the moisturizing effect of foundation cream, and make the skin softer and smoother; sodium chloride and magnesium sulfate can adjust the physical properties of the system, keep the air cushion cream in a uniform state, increase thixotropy, and have better spreadability and ductility when applied, making the makeup more stable.

[0030] Optionally, the moisturizer includes butylene glycol, glycerol and 1,3-propylene glycol in a mass ratio of 10:6:3; the preservative includes caprylyl glycol and ethylhexylglycerin in a preparation ratio of 0.5:0.5.

[0031] Optionally, the solvent is selected from at least one of deionized water, hot spring water and bifid yeast fermentation product filtrate.

[0032] In a second aspect, the present application provides a method for preparing a high-temperature stable emulsified foundation cream, which adopts the following technical solution: A method for preparing a high-temperature stable emulsified foundation cream comprises the following steps: Mix emulsifier A with emulsifier B, oil, film former, and thickener, and heat to 80-90°C to prepare phase A. Heat the wax forming agent to 80-90°C until it is uniformly dissolved to prepare phase B. Mix the color powder uniformly to obtain phase C. Mix the humectant, preservative, emulsion stabilizer, and solvent, and heat to 80-90°C to prepare phase D. After cooling phase A, add it to phase B and stir evenly; add phase C, keep warm at 80-90°C and stir evenly; add phase D, stir evenly, fill at 80-90°C, cool, and obtain the finished product.

[0033] By adopting the above technical solution, the formula raw materials are divided into different phases and added to the system step by step, which helps to promote the interaction between the raw materials and improves the stability of the foundation cream; by controlling various process parameters, the anti-migration property of the foundation cream is effectively improved, achieving a long-lasting and non-dull makeup effect and a soft and delicate skin feel; the preparation method of the present application has simple steps, low cost, is suitable for industrial production, and has broad market prospects.

[0034] In summary, this application has the following beneficial effects: 1. Since this application uses a compound of oils such as cyclopentasiloxane and wax forming agents such as synthetic wax, the texture and ductility are optimized in the oil-in-water emulsion system, and the stability of the foundation cream is improved. The oil-in-water emulsion system can form a stable film between the oil and water phases, thereby extending the durability of the makeup. At the same time, with thickeners and film-forming agents, the foundation cream has better skin adhesion and concealing power. When the temperature is high in summer, the wax forming agent enhances the stability of the makeup, reduces temperature-induced migration, and enhances the long-lasting makeup effect in summer.

[0035] 2. In this application, cyclopentasiloxane, trimethyl pentaphenyl trisiloxane and caprylic / capric triglyceride are preferably used as oils, which, together with the film-forming agent trimethylsiloxysilicate and the thickening agent silica dimethyl silylate, can form a flexible film evenly distributed on the skin surface, and can effectively block the invasion of moisture, oil and dirt, making the makeup lasting, while giving the skin a more refreshing and comfortable makeup feel.

[0036] 3. In this application, titanium dioxide, iron oxide yellow, red, black and other color powders are preferably used, and the color powders are pre-treated to improve the dispersibility of the color powders, increase the smoothness and uniformity of the foundation cream, improve the gloss uniformity of the makeup, and make the makeup more coordinated and beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a product picture of the foundation cream prepared in Example 1 after being placed at 50°C for 24 hours.

[0038] Figure 2 This is a product picture of the foundation cream prepared in Example 1 after being placed at 55°C for 24 hours.

[0039] Figure 3 This is a product picture of the foundation cream prepared in Example 1 after being placed at 50°C for 24 hours.

[0040] Figure 4 This is a waterproof test effect diagram of the foundation cream prepared in Example 1.

[0041] Figure 5 This is a water immersion waterproof test chart of the foundation cream prepared in Example 1. DETAILED DESCRIPTION

[0042] The following examples further illustrate the present application in detail. Example

[0043] Example 1: A high-temperature stable emulsified foundation cream, the raw materials used are as shown in Table 1, the oil comprises cyclopentasiloxane, trimethyl pentaphenyl trisiloxane and caprylic / capric triglyceride in a mass ratio of 12:10:3; the wax forming agent comprises synthetic wax and microcrystalline wax in a mass ratio of 5:4, the synthetic wax is selected from Paracera, model N88, item number LHMC90; the toner comprises toner No. 1, toner No. 2 and toner No. 3 in a mass ratio of 15:3:2; Color powder No. 1 includes titanium dioxide, iron oxide yellow, iron oxide red and iron oxide black in a mass ratio of 11:3:0.8:0.2. Titanium dioxide, iron oxide yellow, iron oxide red and iron oxide black are all selected from Shanghai Cofeng Biotechnology, with corresponding models of Ti-18as, YP-75AS, RP-29AS and BP-50AS; Color powder No. 2 is selected from Shanghai Cofeng Biotechnology, and contains titanium dioxide CI77891, aluminum hydroxide and sodium stearoyl glutamate, with model Ti-02SG; Color powder No. 3 is selected from Shanghai Cofeng Biotechnology, and contains titanium dioxide CI77891, trimethylsiloxysilicate and aluminum hydroxide, with model Ti-02TMS.

[0044] The method for preparing the high-temperature stable emulsified foundation cream comprises the following steps: Emulsifier A is mixed with emulsifier B, oil, film former, and thickener, and then heated to 80°C to prepare phase A. The wax forming agent is heated to 80°C until it is uniformly dissolved to prepare phase B. The color powder is mixed uniformly to obtain phase C. The humectant, preservative, emulsion stabilizer, and solvent are mixed and heated to 80°C to prepare phase D. After cooling phase A, add it to phase B and stir evenly; add phase C, keep warm at 80°C and stir evenly; add phase D, stir evenly, fill at 80°C, cool, and obtain the finished product.

[0045] Table 1 Amount of raw materials used in foundation cream in Examples 1-7 Example 2-3: A high-temperature stable emulsified foundation cream, which differs from Example 1 in that the amounts of raw materials used are as shown in Table 1.

[0046] Example 4: A high-temperature stable emulsified foundation cream. The difference from Example 1 is that the amounts of raw materials are as shown in Table 1, and the mass ratio of synthetic wax to microcrystalline wax in the wax forming agent is 5:2.

[0047] Example 5: A high-temperature stable emulsified foundation cream. The difference from Example 1 is that the amounts of raw materials are as shown in Table 1, and the wax forming agents are all synthetic waxes.

[0048] Example 6: A high-temperature stable emulsified foundation cream, which differs from Example 1 in that the amounts of raw materials are as shown in Table 1, and the wax forming agent is beeswax.

[0049] Example 7: A high-temperature stable emulsified foundation cream, which differs from Example 1 in that the amounts of raw materials are as shown in Table 1, and the wax forming agent includes synthetic wax and beeswax in a mass ratio of 5:4.

[0050] Example 8: A high-temperature stable emulsified foundation cream, which differs from Example 1 in that the amounts of raw materials are as shown in Table 2, and the oil contains cyclopentasiloxane, trimethyl pentaphenyl trisiloxane and caprylic / capric triglyceride in a mass ratio of 10:14:1.

[0051] Table 2 Raw material dosage of foundation cream in Examples 8-12 Example 9: A high-temperature stable emulsified foundation cream, which differs from Example 1 in that the oil is cyclopentasiloxane.

[0052] Example 10: A high-temperature stable emulsified foundation cream, which differs from Example 1 in that the oil comprises trimethyl pentaphenyl trisiloxane and caprylic / capric triglyceride in a mass ratio of 22:3.

[0053] Example 11: A high-temperature stable emulsified foundation cream, which differs from Example 1 in that the oil comprises cyclopentasiloxane and caprylic / capric triglyceride in a mass ratio of 10:15.

[0054] Example 12: A high-temperature stable emulsified foundation cream, which differs from Example 1 in that the emulsifier B is polyglycerol-3-diisostearate.

[0055] Comparative Example Comparative Example 1: A high-temperature stable emulsified foundation cream, which differs from Example 1 in that the wax forming agent is only beeswax.

[0056] Comparative Example 2: A commercially available foundation cream, selected from Shenzhen Zhongchuangwei Technology, model MAYCHEER / Meiqier 890 medium skin color.

[0057] Performance testing Cream foundations were prepared according to the methods in the examples and comparative examples, and performance tests were performed according to the following methods.

[0058] Test 1: The foundation cream prepared in Example 1 was placed in a 50°C incubator for 24 hours. Figure 1 As shown, there is no cracking, edge locking, or melting of the paste.

[0059] Test 2: The foundation cream prepared in Example 1 was placed in a 55°C incubator for 24 hours. Figure 2 As shown, the paste may crack, lock, melt, etc.

[0060] Test 3: The foundation cream prepared in Example 1 was placed in a 55°C incubator for 24 hours. Figure 3 As shown, the paste may crack, lock, melt, etc.

[0061] Test 4: Take an appropriate amount of the foundation cream prepared in Example 1, apply it on the arm, let it stand for 2 minutes, and then rinse with plenty of water (such as Figure 4 As shown in 1), it can be seen that the area where the foundation cream is applied on the arm has a good waterproof effect (as shown in Figure 4 After wiping off the remaining water marks, the foundation cream is intact (as shown in Figure 4 (as shown in 3).

[0062] Test 5: Place the paste in water and let it stand for 5 minutes (as Figure 5 Then take it out and use your fingertips to take the material (as shown in A). Figure 5 As shown in B, it can be seen that the material is taken and applied normally, the ductility is good, and there is no impact.

[0063] Anti-migration performance: Use a dropper to apply 0.30g of foundation cream (total amount) to the skin of a human arm, spread it evenly, and let it dry naturally for 5 minutes. Place the arm in a 38°C incubator for 10 minutes. Then, use paper towels to press three areas with the same force. Use an analytical balance to weigh the weight increase of each of the three paper towels (the amount of foundation migrated). Migration rate = migration amount / total amount × 100%. Five skin specimens were tested in each group, and the test results were averaged. The test results are recorded in Table 3.

[0064] Skin feel test: Female volunteers aged 20-50 with healthy skin were selected for the experience test and divided into 10 groups with 20 people in each group. The foundation creams were rated in an environment with a temperature of 26±1℃ and an air humidity of about 75%. After the same simple cleansing and skin care, different samples were used and the skin care was evaluated at (1.0±0.1) mg / cm 2 Apply the test product to the face, and then evaluate the product's spreadability, brightness, smoothness, fit, concealing power, and moisturizing properties on a 10-point scale, with 10 points considered the best experience, 9 points the second best, and 1 point the worst experience.

[0065] Table 3 Performance test results of high temperature stable emulsified foundation cream Combining Examples 1-3 and the data in Table 3, it can be seen that the foundation creams made with different raw material ratios still have a low migration rate at 38°C, indicating that they have good heat resistance and anti-migration effects, are not easy to come off in summer, and have a good makeup-lasting effect in summer. In addition, they feel soft, easy to spread, and adhere to the skin, and have good concealing and brightening effects.

[0066] Compared with Example 1, Example 4 uses synthetic wax and microcrystalline wax in different mass ratios as wax forming agents. It can be seen that Example 4 has similar anti-high-temperature migration effect as Example 1, has strong makeup holding ability for use in summer, and has good skin feel, concealing blemishes, brightening, smoothness, and delicateness.

[0067] Compared with Example 1, Example 5 uses synthetic wax, microcrystalline wax and beeswax as wax forming agents. Table 3 shows that the high-temperature migration rate of the foundation cream prepared in Example 5 increases, and its spreadability and adherence decrease, and the ability to hold the makeup at high temperatures is weakened.

[0068] In Example 6, beeswax and microcrystalline wax are used as wax forming agents. It can be seen that the foundation cream prepared therefrom has increased migration rate at high temperature, poor makeup lasting effect, and poor spreadability, adherence, and smoothness compared to Example 1.

[0069] In Example 7, synthetic wax and beeswax in a mass ratio of 5:4 were used as wax forming agents. As shown in Table 3, the migration rate of the prepared foundation cream was greater than that of Example 1, but smaller than that of Examples 6 and 5, indicating that the effect of using beeswax and synthetic wax in combination was not as good as the effect of using synthetic wax and microcrystalline wax in combination.

[0070] Compared with Example 1, Example 8 uses cyclopentasiloxane, trimethyl pentaphenyl trisiloxane and caprylic / capric triglyceride in different mass ratios as oils. It can be seen that the prepared foundation cream has similar migration rate and sensory score as Example 1.

[0071] Compared with Example 1, Example 9 uses only cyclopentasiloxane as the oil, and the migration rate of the foundation cream prepared is increased, while the spreadability, moisturizing property and compliance are reduced.

[0072] In Example 10, trimethyl pentaphenyl trisiloxane is used instead of cyclopentasiloxane. Although it has better silkiness, brightness and concealing power, its moisturizing, conformability and spreadability are reduced compared with Example 1.

[0073] In Example 11, compared with Example 1, caprylic acid / silicic acid triglyceride was used instead of trimethyl pentaphenyl trisiloxane. It can be seen that the migration rate of the prepared foundation cream increased, and the moisturizing, conformability and spreadability scores decreased.

[0074] In Example 12, glyceryl-3 diisostearate was used as emulsifier B. It can be seen that its combination effect with emulsifier A is not as good as sorbitan stearate. The migration rate of the foundation cream prepared is increased, and the spreadability, moisturizing property, and compliance are reduced.

[0075] In Comparative Example 1, only beeswax was used as a wax forming agent. It can be seen that the migration rate of the foundation cream increased at high temperature, the makeup holding ability weakened, and the sensory evaluation scores such as spreadability decreased.

[0076] Comparative Example 2 is a commercially available foundation cream, which has a larger migration rate at high temperature, and its scores for adherence and moisturizing are not as good as those of Example 1 of the present application.

[0077] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of the claims of the present application, they are protected by the patent law.

Claims

1. A high temperature stable emulsified foundation cream, characterized in that: The invention comprises the following raw materials in weight percentage: emulsifier A 1-4%, emulsifier B 0.5-1%, oil 10-25%, thickener 0.1-3%, film former 0.5-20%, wax forming agent 1-9%, color powder 3.2-25%, emulsion stabilizer 0.5-2%, moisturizer 2-20%, preservative 0.5-1%, and the balance is solvent; The wax forming agent is selected from at least two of synthetic wax, microcrystalline wax, paraffin wax, beeswax, carnauba wax, and candelilla wax; The oil is selected from at least one of cyclopentasiloxane, trimethyl pentaphenyl trisiloxane, caprylic / capric triglyceride, caprylyl polymethicone, isononyl isononanoate, dicaprylyl carbonate, and diphenylsiloxyphenyl polytrimethicone.

2. The high temperature stable emulsified foundation cream according to claim 1, characterized in that: The wax forming agent comprises synthetic wax and microcrystalline wax in a mass ratio of 5:2-4.

3. The high temperature stable emulsified foundation cream according to claim 1, characterized in that: The oil comprises cyclopentasiloxane, trimethyl pentaphenyl trisiloxane and caprylic / capric triglyceride in a mass ratio of 10-12:10-14:1-3.

4. The high temperature stable emulsified foundation cream according to claim 1, characterized in that: The toner includes toner No. 1, toner No. 2 and toner No. 3 with a mass ratio of 15:3:

2. Toner No. 1 includes titanium dioxide, red iron oxide, yellow iron oxide and black iron oxide; toner No. 2 is a mixture of titanium dioxide, aluminum hydroxide and sodium stearoyl glutamate; toner No. 3 is a mixture of titanium dioxide, trimethylsiloxysilicate and aluminum hydroxide.

5. The high temperature stable emulsified foundation cream according to claim 4, characterized in that: The mass ratio of titanium dioxide, yellow iron oxide, red iron oxide and black iron oxide in the No. 1 toner is 11:3:0.8:0.2, and the titanium dioxide in the No. 1 toner is pretreated with triethoxyoctylsilane and aluminum hydroxide.

6. The high temperature stable emulsified foundation cream according to claim 1, characterized in that: The emulsifier A is at least one selected from cetyl PEG / PPG-10 / 1 dimethicone, PEG-9 polydimethylsiloxyethyl dimethicone, lauryl PEG-9 polydimethylsiloxyethyl dimethicone, and lauryl PEG-10 tris(trimethylsiloxy)silylethyl methicone; The emulsifier B is selected from at least one of polyglyceryl-3 diisostearate, polyglyceryl-4 isostearate, sorbitan isostearate, sorbitan sesquioleate, and the like.

7. The high temperature stable emulsified foundation cream according to claim 1, characterized in that: The thickener is selected from at least one of silica dimethyl silylate and disteardimethylammonium hectorite.

8. The high temperature stable emulsified foundation cream according to claim 1, characterized in that: The film-forming agent is selected from at least one of trimethylsiloxysilicate, polyvinyl pyrrolidone, hydrogenated (styrene / methylstyrene / indene) copolymer, polymethylsilsesquioxane, and acrylic acid (ester) / polydimethylsiloxane copolymer.

9. The high temperature stable emulsified foundation cream according to claim 1, characterized in that: The preservative is selected from at least one of caprylyl glycol, p-hydroxyacetophenone, ethylhexylglycerin and 1,2-hexanediol; The moisturizing agent is selected from at least one of butylene glycol, glycerin, propylene glycol and dipropylene glycol; The emulsion stabilizer is selected from at least one of sodium chloride and magnesium sulfate.

10. The method for preparing the high-temperature stable emulsified foundation cream according to any one of claims 1 to 9, characterized in that: The following steps are involved: Mix emulsifier A with emulsifier B, oil, film former, and thickener, and heat to 80-90°C to prepare phase A. Heat the wax forming agent to 80-90°C until it is uniformly dissolved to prepare phase B. Mix the color powder uniformly to obtain phase C. Mix the humectant, preservative, emulsion stabilizer, and solvent, and heat to 80-90°C to prepare phase D. After cooling phase A, add it to phase B and stir evenly; add phase C, keep warm at 80-90°C and stir evenly; add phase D, stir evenly, fill at 80-90°C, cool, and obtain the finished product.

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