High-concealing makeup holding air cushion and preparation method thereof

Abstract

The application relates to the technical field of cosmetics, in particular to a high-concealment makeup-maintaining air cushion and a preparation method thereof. A film forming agent in the high-concealment makeup-maintaining air cushion comprises the following: trimethylsiloxy silicate 5-7 parts, isododecane 0.3-0.7 parts, and acrylic acid (ester) / polymethyltrimethicone methacrylate copolymer 2-3 parts. A colorant comprises the following raw materials in parts by weight: titanium dioxide 5-7 parts, silica 0.8-1.2 parts, mica powder 5-7 parts, CI 77492 0.4-0.8 parts, aluminum hydroxide 0.8-1.2 parts, CI 77491 0.4-0.6 parts, triethoxyl octyl silane 0.8-1.2 parts, and CI 77499 0.3-0.5 parts. The particle size of the titanium dioxide at least comprises any two of 4 nm, 30-50 nm and 200-260 nm. The air cushion has the advantages of prolonging the makeup-maintaining time of the air cushion and improving the concealment effect.

Description

Technical Field

[0001] This application relates to the technical field of cosmetics, and in particular to a high-coverage, long-lasting cushion foundation and its preparation method. Background Technology

[0002] Cushion foundations are a type of foundation cosmetic, primarily used to conceal blemishes, even out skin tone, minimize pores, and create a natural, bare-faced look. Their portable design allows for quick application and touch-ups anytime, anywhere. Cushion foundations are typically used for base makeup and come into direct contact with the skin. Compared to traditional liquid foundations and BB creams, cushion foundations only require the included puff to pick up an appropriate amount of foundation and press it evenly onto the face, making them very convenient. Current cushion foundations generally achieve their concealing and color-correcting effects by increasing the amount of silicone-treated titanium dioxide. However, this type of cushion foundation often suffers from dryness, caking, powderiness, poor film-forming properties, and is prone to oiliness and makeup slippage over time. Summary of the Invention

[0003] In order to prolong the wearing time of the cushion and improve the coverage, this application provides a high-coverage long-lasting cushion and a method for preparing the same.

[0004] In the first aspect, this application provides a high-coverage, long-lasting cushion foundation, which adopts the following technical solution:

[0005] A high-coverage, long-lasting cushion foundation comprises the following raw materials in weight percentages: 7-11% film-forming agent, 4-5.5% emulsifier, 0.3-0.9% thickener, 0.5-1.5% emulsion stabilizer, 14-18% colorant, 3-5% skin conditioning agent, 7-9 parts moisturizer, and the balance being solvent;

[0006] The film-forming agent comprises the following raw materials in parts by weight: 5-7 parts of trimethylsiloxysilicate, 0.3-0.7 parts of isododecane, and 2-3 parts of acrylate / polytrimethylsiloxane methacrylate copolymer.

[0007] The emulsifier comprises the following raw materials in parts by weight: 2.5-5 parts of PEG-10 polydimethylsiloxane, 0.4-0.8 parts of sorbitan sesquioleate, and 0.3-0.7 parts of polyglycerol-3 polydimethylsiloxyethyl polydimethylsiloxane;

[0008] The colorant comprises the following raw materials in parts by weight: 5-7 parts titanium dioxide, 0.8-1.2 parts silica, 5-7 parts mica powder, 0.4-0.8 parts Cl 77492, 0.8-1.2 parts aluminum hydroxide, 0.4-0.6 parts Cl 77491, 0.8-1.2 parts triethoxyoctylsilane, and 0.3-0.5 parts Cl 77499; the titanium dioxide is hydrophobic titanium dioxide, and its particle size includes at least two of the following: 4 nm, 30-50 nm, and 200-260 nm.

[0009] The solvent comprises the following raw materials in parts by weight: 5-15 parts of cyclopentadimethylsiloxane, 5-15 parts of cyclohexylsiloxane, and 25-45 parts of water.

[0010] By adopting the above technical solution, this application adds titanium dioxide of different particle sizes, utilizing the gradation effect to make the cushion foundation form a more continuous and dense film after makeup application, achieving excellent concealing effect. Furthermore, this application does not improve the concealing effect by increasing the content of colorants; through the gradation effect of different titanium dioxide particle sizes, the cushion foundation has a light, breathable feel after use, allowing for natural pore breathing, reducing the likelihood of breakouts, and making it more suitable for sensitive skin. The film-forming agent, through the compounding of trimethylsiloxane silicate and acrylate / polytrimethylsiloxane methacrylate copolymer, can form a breathable film layer. This compounding also improves the dispersibility of titanium dioxide of different particle sizes and other colorants, making the film formation more uniform, continuous, and dense, resulting in long-lasting makeup and high concealing effect. Trimethylsiloxane silicate is a hard film-forming agent; it forms a film quickly, but its anti-smudge effect is low, resulting in a tight feeling on the face after film formation and a short makeup time. Acrylic acid (ester)-based / polytrimethylsiloxane methacrylate copolymer is a soft film-forming agent with good anti-smudge effect, but its film formation is thick and relatively sticky. The combination of the two can achieve excellent effects of fast film formation, good anti-smudge effect, and light makeup feel. In addition, the film formed by the combination of the two has extensibility and toughness, strong film formation continuity, and is not easy to smudge. The added isododecane can act as a solvent to improve the compatibility of the two, and as a volatile oil solvent to achieve a fast drying effect. Furthermore, by limiting its addition amount, its evaporation process, as well as in combination with other volatile raw materials in the formula, gives the trimethylsiloxysilicate and acrylic (ester)-based / polytrimethylsiloxane methacrylate copolymer a microporous film during film formation, namely the breathable film layer mentioned in the instructions. This allows the skin to breathe well, is not easy to clog pores, and its breathable film layer can achieve a micro-nano rough structure effect, which can play a role in waterproofing and oil repellency, thereby improving the makeup holding effect.

[0011] Preferably, the titanium dioxide comprises three particle sizes: 4nm, 30-50nm, and 200-260nm, with a weight ratio of 1:4:3.

[0012] By adopting the above technical solution and adding titanium dioxide with three particle sizes of 4nm, 30-50nm and 200-260nm, the gradation effect of titanium dioxide is strengthened, making the cushion more continuous and dense in film formation after makeup application, thus achieving excellent concealing effect.

[0013] Preferably, the film-forming agent further includes 0.7-1.1 parts by weight of cyclodextrin.

[0014] By adopting the above technical solution, and by adding cyclodextrin, which has a conical ring structure with a hydrophilic outer edge and a hydrophobic inner cavity, it can encapsulate suitable substrates. The addition of cyclodextrin in this application can encapsulate nano-sized titanium dioxide and small-particle-size colorants. On the one hand, it can improve the dispersibility of ultrafine titanium dioxide particles; on the other hand, after a certain degree of encapsulation, the hydroxyl groups on the cyclodextrin can better integrate it into the system, thereby contributing to stronger film-forming properties of the cushion, resulting in a continuous and dense film that is less prone to caking or powdering, and stronger makeup staying power and coverage.

[0015] Preferably, the cyclodextrin is a mixture of γ-cyclodextrin and β-cyclodextrin.

[0016] By adopting the above technical solution, the pores of γ-cyclodextrin are larger than those of β-cyclodextrin. The combination of the two can better encapsulate the colorants in the system, making them more compatible with the system, more dispersible, and resulting in a more continuous and dense film with better makeup retention and concealing properties.

[0017] Preferably, the weight ratio of γ-cyclodextrin to β-cyclodextrin is 7:2.

[0018] By adopting the above technical solution and considering the particle size distribution of the colorant in this application, this ratio is a preferred ratio.

[0019] Preferably, the skin conditioning agent comprises the following raw materials in parts by weight: 0.2-0.4 parts of PEG-10 polydimethylsiloxane, 0.5-0.9 parts of PEG-10 polydimethylsiloxane / vinyl polydimethylsiloxane crosspolymer, and 2-4 parts of octyl polymethylsiloxane.

[0020] By adopting the above technical solution and combining skin conditioning agents, the cushion foundation can be made more gentle, less likely to cause allergies, and can meet the needs of sensitive skin.

[0021] Preferably, the moisturizer comprises the following raw materials in parts by weight: 0.5-1.5 parts glycerin, 0.5-1.5 parts butylene glycol, 0.5-1.5 parts 1,3-propanediol, 0.3-0.7 parts 1,2-hexanediol, 0.3-0.7 parts caprylyl glycol, and 0.3-0.7 parts ethylhexylglycerin.

[0022] By adopting the above technical solution and through the compounding of moisturizers, the cushion foundation can be made to prevent dryness and have stronger moisturizing properties.

[0023] Secondly, this application provides a method for preparing a high-coverage, long-lasting cushion foundation, employing the following technical solution:

[0024] A method for preparing a high-coverage, long-lasting cushion foundation includes the following steps:

[0025] S1. Mix the film-forming agent, emulsifier, thickener, colorant, skin conditioning agent, and cyclopentadimethylsiloxane and cyclohexylsiloxane in the solvent until homogeneous to obtain mixture A;

[0026] S2. Stir the humectant, emulsion stabilizer and water in the solvent until homogeneous to obtain mixture B;

[0027] S3. Add mixture B to mixture A in batches, homogenize, and obtain a high-coverage, long-lasting cushion foundation.

[0028] By adopting the above technical solution, the preparation method of this application is simple, highly tolerant of process parameters, and the product qualification rate is high, reaching over 99%.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. This application utilizes the addition of titanium dioxide with particle sizes of 4nm, 30-50nm, and 200-260nm to achieve a more continuous and dense film formation after application, resulting in excellent concealing effect. Furthermore, this application does not improve concealing effect by increasing the content of colorants. The gradation of different titanium dioxide particle sizes ensures that the cushion feels light and breathable after application, allowing pores to breathe naturally and reducing the risk of breakouts, making it more suitable for sensitive skin. The film-forming agent, a blend of trimethylsiloxane silicate and acrylate / polytrimethylsiloxane methacrylate copolymer, forms a breathable film layer. This blend also improves the dispersibility of titanium dioxide with different particle sizes and other colorants, resulting in a more uniform, continuous, and dense film formation, leading to long-lasting makeup and high concealing effect.

[0031] 2. The cushion prepared in this application has the advantages of high coverage and long-lasting makeup, with a makeup time of 10.6 hours or more, and up to 13.1 hours. In the coverage effect test, the coverage satisfaction rate can reach 94-96%, and the actual skin adhesion, makeup retention, lightness and gentleness are all excellent. Attached Figure Description

[0032] Figure 1 , Figure 2 and Figure 3 This is a graph showing the test results of three subjects who applied the cushion foundation of Example 1 for 15 minutes and 8 hours. Detailed Implementation

[0033] The following provides a more detailed description of this application in conjunction with specific details.

[0034] raw material

[0035] All raw materials used in this application were purchased commercially. Among them, cyclopentasiloxane and cyclohexylsiloxane, and acrylate / polytrimethylsiloxane methacrylate copolymer were purchased from Dow (Zhangjiagang) Investment Co., Ltd.; distearate dimethylammonium lithium montmorillonite, polyglycerol-3 polydimethylsilyl hydroxyethyl polydimethylsiloxane, CI 77891, mica powder, CI77492, aluminum hydroxide, CI 77491, and CI 77499 were all purchased from Shanghai Kofeng Biotechnology Co., Ltd.; polydimethylsiloxane was PEG-10, purchased from Shin-Etsu Chemical Industry Co., Ltd.; sorbitan sesquioleate was purchased from Croda Singapore Pte Ltd; PEG-10 polydimethylsiloxane / vinyl polydimethylsiloxane crosspolymer and octyl polymethylsiloxane were purchased from Zhejiang Runhe Organosilicon New Materials Co., Ltd.; magnesium sulfate was purchased from Longtaiwei (Jiangsu) Food Technology Co., Ltd.

[0036] Example

[0037] Example 1

[0038] A high-coverage, long-lasting cushion foundation, the raw materials and their amounts are shown in Table 1, and its preparation method is as follows:

[0039] S1. Maintain the temperature within the range of 25-35℃, and prepare the following: cyclopentamethoxysiloxane, cyclohexylsiloxane, trimethylsiloxysilicate, distearate dimethylammonium lithium montmorillonite, polydimethylsiloxane, sorbitan sesquioleate, polydimethylsiloxane / vinyl polydimethylsiloxane crosspolymer, octyl polymethylsiloxane, polyglycerol-3 polydimethylsiloxyethyl polydimethylsiloxane, isododecane, acrylates / polytrimethylsiloxane methacrylate copolymer, titanium dioxide, mica powder, silica, CI 77492, aluminum hydroxide, CI 77491, triethoxyoctylsilane, and CI Mix 77499 and stir evenly with a mixer at a speed of 1000 rpm to obtain mixture A; wherein, titanium dioxide is a mixture of three particle sizes of 4 nm, 30-50 nm and 200-260 nm, and all of them are hydrophobic, with a mass ratio of 1:4:3; the mica powder has a particle size of 3000 mesh.

[0040] S2. Mix the remaining ingredients and stir manually until transparent to obtain mixture B;

[0041] S3. Place mixture A into a homogenizer, turn on the homogenizer and slowly add mixture B. Homogenize at 5500 rpm for 8 minutes to obtain a high-coverage, long-lasting cushion foundation.

[0042] Table 1. Raw materials and their quantities (kg) in Example 1

[0043]

[0044]

[0045] Example 2

[0046] A high-coverage, long-lasting cushion foundation differs from Example 1 in that its titanium dioxide is a mixture of two particle sizes, 30-50nm and 200-260nm, in a mass ratio of 4:3. The remaining steps are the same as in Example 1.

[0047] Example 3

[0048] A high-coverage, long-lasting cushion foundation differs from Example 1 in that its titanium dioxide is a mixture of two particle sizes, 4nm and 200-260nm, in a mass ratio of 1:3. The remaining steps are the same as in Example 1.

[0049] Example 4

[0050] A high-coverage, long-lasting cushion foundation differs from Example 1 in that its titanium dioxide is a mixture of two particle sizes, 4nm and 30-50nm, in a mass ratio of 1:4. The remaining steps are the same as in Example 1.

[0051] Example 5

[0052] A high-coverage, long-lasting cushion foundation differs from Example 1 in that its film-forming agent further includes 0.7 kg of γ-cyclodextrin and 0.2 kg of β-cyclodextrin, while the amount of water is reduced by 0.9 kg. The remaining steps are the same as in Example 1.

[0053] Example 6

[0054] A high-coverage, long-lasting cushion foundation differs from Example 1 in that its film-forming agent further includes 0.9 kg of γ-cyclodextrin, and the water content is reduced by 0.9 kg. The remaining steps are the same as in Example 1.

[0055] Example 7

[0056] A high-coverage, long-lasting cushion foundation differs from Example 1 in that its film-forming agent further includes 0.9 kg of β-cyclodextrin, and the water content is reduced by 0.9 kg. The remaining steps are the same as in Example 1.

[0057] Comparative Example

[0058] Comparative Example 1

[0059] A high-coverage, long-lasting cushion foundation differs from Example 1 in that the trimethylsiloxysilicate in its film-forming agent is replaced with an equal mass of acrylate / polytrimethylsiloxane methacrylate copolymer, while the remaining steps are the same as in Example 1.

[0060] Comparative Example 2

[0061] A high-coverage, long-lasting cushion foundation differs from Example 1 in that the film-forming agent is replaced with an equal mass of trimethylsiloxane methacrylate copolymer, while the remaining steps are the same as in Example 1.

[0062] Comparative Example 3

[0063] A high-coverage, long-lasting cushion foundation differs from Example 1 in that its titanium dioxide particle size is 30-50 nm, while the remaining steps are the same as in Example 1.

[0064] Comparative Example 4

[0065] A high-coverage, long-lasting cushion foundation differs from Example 1 in that its emulsifier does not contain PEG-10 polydimethylsiloxane / vinyl polydimethylsiloxane crosslinking polymer, while the remaining steps are the same as in Example 1.

[0066] Performance testing

[0067] Detection methods / test methods

[0068] High-coverage, long-lasting cushion foundations were prepared according to the preparation methods of Examples 1-7 and Comparative Examples 1-4, and then tested according to the following testing methods. The test results are shown in Tables 2 and 3.

[0069] Microbiological and physicochemical testing: The tests were conducted according to the testing methods in the "Cosmetic Safety Technical Specifications" (2015 edition); the cushions in Examples 1-7 and Comparative Examples 1-4 of this application all meet the requirements;

[0070] Particle size analysis: The sample was dropped onto a glass slide and then covered with a coverslip to press the sample evenly. The sample was then observed using a 16X eyepiece and a 100X objective lens. After taking pictures, the maximum, minimum and mode of the particle size in the image were taken and the average of the three values ​​was calculated. The results are shown in Table 2.

[0071] Makeup longevity: 30 volunteers were recruited, including 5 men and 25 women. After basic skin care, appropriate amounts of the cushion foundations of Examples 1-7 and Comparative Examples 1-4 were applied evenly to the face and neck. The foundation was gently applied outward along the skin texture. Each volunteer applied the sample to different areas at the same time. High-intensity digital photography was used every 0.5 hours until the powder on the face started to cake and crease. The makeup time was then recorded and the average value was taken. The results are shown in Table 2.

[0072] Concealing effect: Fifty volunteers with acne scars or blemishes were recruited. They used the cushion foundations from Examples 1, 5, and Comparative Examples 1-4 for one week each, and then evaluated their performance. A score of 1 was considered very unsatisfactory, 2 unsatisfactory, 3 average, 4 satisfactory, and 5 very satisfactory. The percentage of participants with a score of 4 or higher was then tallied. Stability test: The cushion foundation liquids from Examples 1-7 and Comparative Example 3 were stored at 50℃ and -18℃ for 3 months without sedimentation or stratification, remaining stable. Under the same conditions, Comparative Examples 1-2 showed slight sedimentation, and Comparative Example 4 showed slight stratification. The cushion foundation liquids from Examples 1-7 and Comparative Example 3 remained stable after three cycles from -18% to 48℃. Under the same conditions, Comparative Examples 1-2 showed slight sedimentation, and Comparative Example 4 showed slight stratification.

[0073] Table 2 shows the particle size and makeup-holding effect test results for Examples 1-7 and Comparative Examples 1-4.

[0074]

[0075]

[0076] Table 3. Concealing effect test results (%) of Examples 1, 5 and Comparative Examples 1-4

[0077] Example 1 Example 5 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 skin-adhesive 96 98 82 80 94 90 Coverage 94 96 80 78 88 68 Long-lasting makeup 92 96 80 76 90 70 clarity 92 94 86 86 90 76 mildness 96 98 90 88 90 78

[0078] The test results from Examples 1-7 and Comparative Examples 1-4, as well as Tables 2 and 3, show that the cushion foundation prepared in this application has the advantages of high coverage and long-lasting makeup, with a makeup duration of 10.6 hours or more, and a maximum of 13.1 hours. Furthermore, in the coverage effect test, the satisfaction rate reached 94-96%, and its actual skin adhesion, makeup lasting power, lightness, and gentleness are all excellent. Figure 1-3 This also shows that the cushion foundation of this application has better staying power and concealing effect.

[0079] This application utilizes the addition of titanium dioxide with particle sizes of 4nm, 30-50nm, and 200-260nm to achieve a more continuous and dense film formation after application, resulting in excellent concealing effect. Furthermore, this application does not improve concealing effect by increasing the content of colorants. The gradation of different titanium dioxide particle sizes ensures a lightweight, breathable, and non-suffocating finish, allowing pores to breathe naturally and reducing the risk of breakouts, making it more suitable for sensitive skin. The test results of Examples 1-4 and Comparative Example 3 confirm that a single particle size or a combination of any two particle sizes results in lower concealing effect and makeup longevity.

[0080] The film-forming agent, through the compounding of trimethylsiloxysilicate and acrylate / polytrimethylsiloxane methacrylate copolymer, can form a breathable film layer. Furthermore, the compounding of the film-forming agent can improve the dispersibility of titanium dioxide with different particle sizes and other colorants, resulting in a more uniform, continuous, and dense film, achieving long-lasting makeup and high coverage. This is verified by the test results of Example 1 and Comparative Examples 1-2. Combined with Comparative Example 4, the addition of PEG-10 polydimethylsiloxane / vinyl polydimethylsiloxane crosslinking polymer can accelerate the film-forming rate, improve the film's viscosity, enhance the dispersion of colorants such as titanium dioxide, and simultaneously improve film-forming properties, providing anti-smudge effect, thereby prolonging makeup wear time and indirectly improving coverage.

[0081] Building upon this, and combining Examples 1 and 5, the addition of cyclodextrin, with its conical ring structure, hydrophilic outer edge and hydrophobic inner cavity, allows for the encapsulation of suitable substrates. The addition of cyclodextrin in this application enables the encapsulation of nano-sized titanium dioxide and small-particle-size colorants. On one hand, it improves the dispersibility of ultrafine titanium dioxide particles; on the other hand, after encapsulation, the hydroxyl groups on the cyclodextrin allow for better compatibility within the system, thus contributing to stronger film-forming properties of the cushion foundation, resulting in a continuous and dense film that is less prone to caking or powdering, and improved makeup staying power and coverage. Furthermore, combining Examples 6-7, γ-cyclodextrin has larger pores than β-cyclodextrin. Using a combination of both allows for better encapsulation of colorants in the system, resulting in better compatibility, better dispersibility, a more continuous and dense film, and superior makeup staying power and coverage.

[0082] The samples from Example 1 and Comparative Examples 1-2 were applied with makeup and kept in place for 8 hours. VISIA cameras were used to record and analyze the counts of various items, including spots, UV spots, brown spots, red areas, wrinkles, textures, pores, and porphyrins, immediately after makeup application, 4 hours after makeup application, and 8 hours after makeup application. The counts were normalized, as shown in Table 4. The data were processed and the trends of changes in the test and control samples were analyzed. Makeup retention was characterized by makeup integrity. For example, the makeup integrity at 4 hours was calculated as (blank count - 4-hour count) / (blank count - count immediately after makeup application) * 100%. A higher percentage indicates better makeup retention. A value of 0 indicates the same as the blank (no makeup) value; a value of 100% indicates the same as immediately after makeup application, meaning the makeup is intact; a value < 100% indicates that the makeup may have worn off. Makeup retention data are shown in Tables 5 and 6.

[0083] Table 4. Normalized count data for different time points in Example 1 and Comparative Examples 1-3.

[0084]

[0085] Table 5. Makeup retention data for Examples 1 and Comparative Examples 1-2 after 4 hours of makeup application.

[0086]

[0087]

[0088] Table 6. Makeup retention data for Example 1 and Comparative Examples 1-2 after 8 hours of makeup application.

[0089]

[0090] As shown in Table 4-6, the three samples performed similarly in terms of blemish coverage, skin tone evening, and pore filling, while Comparative Example 2 showed a significant disadvantage in filling texture and wrinkles. Regarding makeup longevity, the three samples also exhibited significant differences. At 4 hours, Comparative Example 2 showed the best performance in blemish coverage, UV blemishes, brown spots, red areas, porphyrins, and pore filling integrity, but its makeup integrity in wrinkles and textures was significantly low (at this point, the wrinkle makeup integrity score was less than 0, indicating that the count for this item was higher than when no makeup was applied). This suggests that although Comparative Example 2 had a high makeup integrity, it exhibited a phenomenon similar to creasing. Comparative Example 1 showed significantly lower makeup integrity in blemishes and brown spots compared to the other two samples, indicating poor makeup longevity at this point. The test sample performed well in all aspects of makeup integrity, indicating that it maintained good makeup integrity without significant dryness or creasing.

[0091] At 8 hours, the makeup integrity of Comparative Example 2 (UV spots, brown spots, pores, and porphyrin) remained high. However, unlike at 4 hours, the spot coverage integrity was lower than the test sample, and the wrinkle and texture integrity were both negative. This may be due to further aggravation of dryness, creasing, and patchiness, leading to a decrease in makeup uniformity and a further decline in spot coverage integrity. The makeup integrity of Comparative Example 1 was the weakest among the three groups, indicating more severe overall makeup wear. Therefore, the wrinkle and pore makeup integrity at this time was not as good as the test sample.

[0092] In general, Comparative Example 2 showed poor results in filling texture and wrinkles immediately after application, and these effects worsened over the next 4 and 8 hours due to drying, creasing, and patchiness. However, the makeup performed well in terms of coverage and skin evenness. Comparative Example 1 showed weaker staying power and exhibited significant overall makeup wear after 8 hours. Example 1 showed good results immediately after application and maintained good staying power for both 4 and 8 hours, with no score exceeding that of no makeup, consistently demonstrating a good facial contouring effect.

[0093] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. 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 are within the scope of the claims of the present invention.

Claims

1. A high-coverage, long-lasting cushion foundation, characterized in that: It comprises the following raw materials in weight percentage: film-forming agent 7-11%, emulsifier 4-5.5%, thickener 0.3-0.9%, emulsion stabilizer 0.5-1.5%, colorant 14-18%, skin conditioning agent 3-5%, moisturizer 7-9%, and the balance being solvent; The film-forming agent comprises the following raw materials in parts by weight: 5-7 parts of trimethylsiloxysilicate, 0.3-0.7 parts of isododecane, and 2-3 parts of acrylic (ester) / polytrimethylsiloxane methacrylate copolymer; The emulsifier comprises the following raw materials in parts by weight: 2.5-5 parts of PEG-10 polydimethylsiloxane, 0.4-0.8 parts of sorbitan sesquioleate, and 0.3-0.7 parts of polyglycerol-3 polydimethylsiloxyethyl polydimethylsiloxane; The colorant comprises the following raw materials in parts by weight: 5-7 parts titanium dioxide, 0.8-1.2 parts silica, 5-7 parts mica powder, 0.4-0.8 parts CI77492, 0.8-1.2 parts aluminum hydroxide, 0.4-0.6 parts CI 77491, 0.8-1.2 parts triethoxyoctylsilane, and 0.3-0.5 parts CI 77499; the titanium dioxide is hydrophobic titanium dioxide, and the titanium dioxide includes three particle sizes: 4 nm, 30-50 nm, and 200-260 nm, with a weight ratio of 1:4:3; The solvent comprises the following raw materials in parts by weight: 5-15 parts of cyclopentadimethylsiloxane, 5-15 parts of cyclohexylsiloxane, and 25-45 parts of water; The film-forming agent further includes 0.7-1.1 parts by weight of cyclodextrin, wherein the cyclodextrin is a mixture of γ-cyclodextrin and β-cyclodextrin; The skin conditioning agent comprises the following raw materials in parts by weight: 0.2-0.4 parts of PEG-10 polydimethylsiloxane, 0.5-0.9 parts of PEG-10 polydimethylsiloxane / vinyl polydimethylsiloxane crosspolymer, and 2-4 parts of octyl polymethylsiloxane.

2. The high-coverage, long-lasting cushion foundation according to claim 1, characterized in that: The weight ratio of γ-cyclodextrin to β-cyclodextrin is 7:

2.

3. The high-coverage, long-lasting cushion foundation according to claim 1, characterized in that: The moisturizer comprises the following raw materials in parts by weight: 0.5-1.5 parts glycerin, 0.5-1.5 parts butylene glycol, 0.5-1.5 parts 1,3-propanediol, 0.3-0.7 parts 1,2-hexanediol, 0.3-0.7 parts caprylyl glycol, and 0.3-0.7 parts ethylhexylglycerin.

4. A method for preparing a high-coverage, long-lasting cushion foundation according to any one of claims 1-3, characterized in that: It includes the following steps: S1. Mix the film-forming agent, emulsifier, thickener, colorant, skin conditioning agent, and cyclopentadimethylsiloxane and cyclohexylsiloxane in the solvent until homogeneous to obtain mixture A; S2. Stir the humectant, emulsion stabilizer and water in the solvent until homogeneous to obtain mixture B; S3. Add mixture B to mixture A in batches, homogenize, and obtain a high-coverage, long-lasting cushion foundation.

Images