A composition for achieving a balanced makeup effect by optical effect and its use in cosmetics

Abstract

The application provides a composition for achieving makeup effect balance through optical effects, comprising hollow silica, alumina and cerium oxide in a mass ratio of 15-25:15-70:5-20. The application also provides a cosmetic composition comprising the functional powder composition described in the above technical solution. The application also provides the use of the composition described in the above technical solution in the preparation of a product with the effects of concealing blemishes, permeability and makeup holding. Experimental results show that the functional powder composition provided by the application can simultaneously achieve excellent concealing power, excellent permeability and long-lasting makeup holding effect, thereby creating flawless and natural perfect / high-quality makeup effects.

Description

Technical Field

[0001] This invention relates to the field of daily chemical technology, and in particular to a composition that achieves a balanced makeup effect through optical effects and its application in cosmetics. Background Technology

[0002] In base makeup products, such as liquid foundation, pressed powder, concealer, and foundation sticks, which are skin-tone correcting cosmetics, coverage, translucency, and staying power are three core dimensions for measuring their quality and efficacy, determining the perfection of the final makeup effect. However, in formula design, these three dimensions present an irreconcilable contradiction, specifically, the difficulty in achieving both high coverage and translucency. To achieve high coverage, existing formulas typically require the addition of a high proportion of high-refractive-index pigments, such as titanium dioxide (TiO2) and zinc oxide. While these pigments can effectively cover skin imperfections such as blemishes, acne scars, and redness, they significantly increase the light reflectivity and opacity of the coating, resulting in a "mask-like" finish that fails to adhere to the skin's natural texture and severely sacrifices translucency. Conversely, if a large amount of low-refractive-index powders, such as hollow silica or silica, are used in pursuit of a lightweight and translucent finish, or if the total amount of powder is reduced, a significant decrease in coverage is inevitable.

[0003] Furthermore, in mainstream long-lasting foundation products, the aforementioned contradictions are amplified, creating a triple dilemma of "concealment-transparency-long-lasting wear." To achieve long-lasting wear, existing technologies generally require the addition of film-forming agents (such as acrylate copolymers) and highly absorbent oil-controlling powders (such as porous silica and modified talc) to the formula. Film-forming agents form a occlusive film on the skin surface, which can lock in the makeup but also exacerbates the heaviness of the makeup and further weakens the translucency effect. Meanwhile, highly absorbent oil-controlling powders, while absorbing skin oil, are prone to agglomerating with pigment particles in the foundation, leading to patchy and cakey makeup. This not only destroys the translucency but also causes uneven coverage due to powder agglomeration, ultimately making it impossible to simultaneously achieve all three objectives.

[0004] In summary, among the existing technologies related to base makeup products, there is no effective solution that can solve the balance between "coverage, transparency, and long-lasting makeup" at the formulation system level, and it is impossible to simultaneously meet consumers' comprehensive needs for high coverage, natural transparency, and long-lasting makeup. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to provide a composition that achieves a balance of makeup effect through optical effect and its application in cosmetics. The composition provided by this application can simultaneously achieve excellent concealing power and excellent transparency, and has long-lasting makeup effect, thus achieving a balance of concealing, transparency and makeup lasting power.

[0006] The inventors discovered that high-coverage cosmetic formulations typically require high-refractive-index pigments, such as titanium dioxide with a refractive index of approximately 2.7 or zinc oxide with a refractive index of approximately 2.0. However, the refractive index of these pigments is much higher than that of the skin (approximately 1.44), causing strong reflection of light on the skin's surface. This results in a noticeable white or mask-like appearance, making the makeup heavy, unnatural, and sacrificing the skin's natural radiance. To achieve a lightweight and translucent look, it is necessary to reduce the amount of high-coverage pigments used or choose low-refractive-index powders, such as polymethyl methacrylate microspheres. These powders can preserve the skin's own high internal diffuse reflection, but this sacrifices coverage and cannot effectively conceal acne scars, blemishes, redness, and other skin imperfections. Furthermore, in cosmetics that require long-lasting wear, such as foundation, the requirements for long-lasting wear may conflict with the requirements for coverage and transparency. For example, when film-forming agents with long-lasting effects (such as acrylates) or a large amount of oil-controlling powders (such as silica, porous powders, etc.) are added to long-lasting cosmetics, a dense film layer will form on the skin surface, which can easily lead to a heavy, mask-like makeup look and a decrease in transparency. Oil-controlling powders can also cause a strong sense of buildup, and when viewed up close, they can appear patchy, cakey, etc., resulting in unnatural coverage.

[0007] In the field of cosmetic foundation, coverage, transparency, and staying power are three mutually restrictive performance dimensions that are difficult to optimize simultaneously. To objectively and quantitatively evaluate the comprehensive effect of the composition of this invention in solving this technical problem, this application introduces a comprehensive evaluation index—the transparency-coverage-staying power balance coefficient (K). This coefficient normalizes the test data of the three dimensions into a comprehensive score using the geometric mean method. The higher the value, the more transparent and natural the makeup effect achieved by the composition while maintaining high coverage and long-lasting makeup, i.e., the better the balance of the three. This invention aims to provide a powder composition with a balance coefficient K that is significantly superior to that of existing technologies.

[0008] Based on this, this application provides a composition that achieves makeup effect balance through optical effects, comprising: hollow silica, alumina and cerium oxide in a mass ratio of 15~25:15~70:5~20.

[0009] The composition provided in this application includes hollow silica, also known as hollow silica microspheres. In some specific implementations, the hollow silica is silica with a closed outer surface and internal channels. In some specific implementations, the refractive index of the hollow silica is 1-1.5, preferably 1.2-1.3, and more preferably 1.29. This application uses low-refractive-index hollow silica as a raw material, which has high diffuse reflection and can provide a lightweight, filled feel. In some specific implementations, the particle size of the hollow silica is 1μm-5μm, preferably 1μm-4μm, and more preferably 4μm. In some specific implementations, the specific gravity of the hollow silica is 1.2-1.5, preferably 1.3-1.4, and more preferably 1.3. In some specific implementations, the porosity of the hollow silica is 25%-35%, preferably 28%-32%, and more preferably 32%. This application does not impose any special restrictions on the source of the hollow silica. It can be purchased from the market or prepared by a template method with a closed outer surface and a hollow interior. The core of this application is the formation of a composite oxide template and selective template removal. The specific steps are as follows:

[0010] First, an alkaline aqueous solution containing amphoteric oxide elements other than silicon (such as aluminum) is prepared, and the pH of the system is controlled to be ≥10. Then, a silicon-containing compound and an alkaline-soluble inorganic element solution are added simultaneously to maintain the pH ≥10, generating composite oxide particles a with a specific particle size as template cores. Next, the above two solutions are added to generate composite oxide particles b with a slightly larger particle size, forming the target shell thickness. Finally, acid is added to adjust the system to acidity (e.g., 1.0) to selectively remove elements other than silicon, and hollow silica particles are obtained after washing.

[0011] The composition provided in this application includes alumina with a refractive index of 1.5 to 2, preferably 1.5 to 1.8. This application uses alumina with a moderate refractive index to provide a primary scattering function, effectively concealing blemishes, and its refractive index forms a good transition with the skin. In some specific implementations, the particle size of the alumina is 1 μm to 16 μm, preferably 1 μm to 15 μm. This application does not have any special restrictions on the source of the alumina; it can be purchased commercially.

[0012] The composition provided in this application includes cerium oxide, wherein the cerium oxide has a refractive index of 2 to 2.5, preferably 2 to 2.3. In some specific implementations, the cerium oxide has a particle size of 100 nm to 5 μm, preferably 800 nm to 2 μm, and more preferably 1.2 μm. In some specific implementations, the cerium oxide is cerium oxide microspheres, wherein the cerium oxide microspheres contain Ce... 3+The proportion is 30%~38%. This application does not have any special restrictions on the source of the cerium oxide. It can be purchased from the market or prepared according to the methods commonly used by those skilled in the art. For example, a precursor solution is prepared by mixing a cerium-containing precursor (such as cerium nitrate hexahydrate) with water at a ratio of (20~120) g:(10~60) mL. A pH adjuster such as acetic acid is added (the mass-volume ratio of precursor to adjuster is 20~120 g:20~120 mL) to obtain a first solution. Ethylene glycol is then added to make the precursor mass proportion 3%~7%. The reaction is carried out at 0.5MPa~4MPa and 160℃~170℃ for 140min~180min. Finally, the mixture is filtered through a ceramic filter membrane, washed and dried to obtain cerium oxide microspheres. This application uses cerium oxide with a high refractive index, which can provide high-intensity scattering at key locations and work in synergy with hollow silica and alumina to build a complete optical gradient, thereby achieving excellent coverage, superior transparency and long-lasting makeup effect, thus creating a flawless and naturally perfect / high-quality makeup effect.

[0013] In some specific implementations, the mass ratio of hollow silica, alumina and cerium oxide is 15~25:15~70:5~20, preferably 15~25:45~70:10~20, more preferably 21~22:45~67:15~20, and most preferably 20:65:15.

[0014] This application does not impose any special restrictions on the preparation method of the composition; the components can be physically mixed in proportion.

[0015] This application also provides a cosmetic composition comprising the composition described in the above technical solution.

[0016] In some specific implementations, the content of the composition in the cosmetic composition is 0.1wt% to 15wt%, preferably 1wt% to 10wt%.

[0017] In some specific implementations, the cosmetic composition may be liquid foundation, cushion foundation, pressed powder or loose powder, etc. In addition to the composition described in the above technical solutions, it may also include the components required for various cosmetic compositions. This application does not have any special limitations in this regard.

[0018] The composition provided in this application uses hollow silica, alumina and cerium oxide in a mass ratio of 15~25:15~70:5~20. The combination of the three can simultaneously achieve excellent coverage, outstanding transparency and long-lasting makeup effect, thereby creating a flawless and naturally perfect / high-quality makeup effect. Attached Figure Description

[0019] Figure 1 Here is a scanning electron microscope image of cerium oxide used in this application;

[0020] Figure 2 This is the diffuse reflectance spectrum of the sample;

[0021] Figure 3 The specular reflection spectrum of the sample;

[0022] Figure 4 Diffuse reflectance spectrum of the sample after adding acid;

[0023] Figure 5 The specular reflection spectrum of the sample after adding acid. Detailed Implementation

[0024] This invention provides a composition that achieves a balanced makeup effect through optical effects and its application in cosmetics. Those skilled in the art can refer to the content of this document and appropriately modify the process parameters to achieve the same result. The methods and applications of this invention have been described through preferred embodiments. Those skilled in the art will clearly be able to modify or appropriately change and combine the methods and applications described herein without departing from the content, spirit, and scope of this invention to realize and apply the technology of this invention.

[0025] The terms “including,” “having,” or “containing,” including the use of their grammatical synonyms, should generally be understood as open-ended and non-restrictive, for example, not excluding other unstated elements or steps, unless otherwise specifically stated or understood from the context.

[0026] It should be understood that the order of the steps or the order in which certain actions are performed is not important as long as the invention remains operational. Furthermore, two or more steps or actions can be performed simultaneously.

[0027] The use of any and all instances or exemplary language such as “e.g.” or “including” in this document is merely intended to better illustrate the invention and is not intended to limit the scope of the invention unless the claims are made. No language in this specification should be construed as indicating that any unclaimed element is essential to the practice of the invention.

[0028] Furthermore, the numerical ranges and parameters used to define the present invention are approximate values, and the relevant values ​​in the specific embodiments have been presented as precisely as possible. However, any value inevitably contains standard deviations due to individual test methods. Therefore, unless explicitly stated otherwise, it should be understood that all ranges, quantities, values, and percentages used in this disclosure are modified with the word "approximately". Here, "approximately" generally means that the actual value is within plus or minus 10%, 5%, 1%, or 0.5% of a specific value or range.

[0029] This application provides a composition that achieves a balanced makeup effect through optical effects, comprising: hollow silica, alumina, and cerium oxide in a mass ratio of 15~25:15~70:5~20.

[0030] This application also provides a cosmetic composition comprising the functional powder composition described in the above technical solution.

[0031] This application also provides the use of the functional powder composition described above in the preparation of products that combine concealing, transparency and long-lasting makeup effects.

[0032] The functional powder composition provided in this application uses hollow silica, alumina and cerium oxide in a mass ratio of 15~25:15~70:5~20. The combination of the three can simultaneously achieve excellent coverage, outstanding transparency and long-lasting makeup effect, thereby creating a flawless and naturally perfect / high-quality makeup effect.

[0033] The functional powder composition, cosmetic composition, and their applications provided in this application are further illustrated below with reference to specific examples. In the following examples, the properties of each raw material are as follows:

[0034] Component A: Hollow silica microspheres, prepared according to the following method:

[0035] First, an alkaline aqueous solution containing amphoteric oxide elements other than silicon (such as aluminum) is prepared, with the pH of the system controlled at ≥10. Then, a silicon-containing compound and an alkaline-soluble inorganic element solution are added simultaneously to maintain the pH at ≥10, generating composite oxide particles a with a specific particle size as template cores. Next, the above two solutions are added to generate composite oxide particles b with a slightly larger particle size, forming the target shell thickness. Finally, acid is added to adjust the system to acidity (e.g., 1.0) to selectively remove elements other than silicon, and hollow silica particles are obtained after washing.

[0036] The hollow silica microspheres have a refractive index of 1.29, a particle size of 4 μm, a specific gravity of 1.4, and a porosity of 32%.

[0037] Component B: Alumina powder with a refractive index of 1.76 and a particle size of less than 16 μm;

[0038] Component C: Cerium oxide microspheres, prepared according to the following method:

[0039] A precursor solution was prepared by mixing a cerium-containing precursor (such as cerium nitrate hexahydrate) with water at a ratio of (20~120) g:(10~60) mL. A pH adjuster such as acetic acid was added (precursor to adjuster mass-volume ratio of 20~120 g:20~120 mL) to obtain a first solution. Ethylene glycol was then added to make the precursor content 3%~7% by mass. The reaction was carried out at 0.5MPa~4MPa and 160℃~170℃ for 140min~180min. Finally, the mixture was filtered through a ceramic filter membrane, washed, and dried to obtain cerium oxide microspheres.

[0040] The cerium oxide microspheres have a refractive index of 2.1, a particle size of 200 nm to 5 μm, and a Ce content of [missing information]. 3+ The percentage is 30%~38%, see [reference] Figure 1 , Figure 1 Here is a scanning electron microscope image of cerium oxide used in this application;

[0041] Mica: White powder, particle size 2.5μm~4.5μm, density 4.44gm / cbi, surface treated with triethoxyoctylsilane;

[0042] Zinc oxide: The crystal structure is wurtzite, and the surface is treated with triethoxyoctylsilane. The D50 particle size is 1.835 μm, and the purity is >90.0% (before surface treatment).

[0043] Example 1

[0044] Components A, B, and C are mixed in a mass ratio of 20:65:15 to obtain the composition.

[0045] Comparative Example 1

[0046] Component A and component B are mixed at a mass ratio of 20:65 to obtain the composition.

[0047] Comparative Example 2

[0048] Component A, component B and mica were mixed in a mass ratio of 20:65:15 to obtain the composition.

[0049] Comparative Example 3

[0050] Component A, component B and zinc oxide were mixed in a mass ratio of 20:65:15 to obtain the composition.

[0051] Experimental Example 1

[0052] 1.1 Experimental Procedure

[0053] Optical index test: (1) Diffuse reflection: Use Lambda 1050+ with integrating sphere attachment to test the diffuse reflection of powder. Use standard white board for calibration. Place the powder sample on the sample stage and start the test to collect diffuse reflection spectral data; (2) Specular reflection: Use Agilent Cary 7000 with UMA attachment to conduct specular reflection test. The attachment installation and instrument calibration must be completed first. Fix the sample at the matching sampling position. After setting the test angle and parameters, the instrument will automatically collect specular reflection related data.

[0054] 1.2 Experimental Results

[0055] Experimental results are as follows Figure 2 , Figure 3 , Figure 4 , Figure 5As shown in Table 1, Figure 2 The diffuse reflectance spectrum of the sample. Figure 3 The specular reflection spectrum of the sample. Figure 4 The diffuse reflectance spectrum of the sample after adding acid. Figure 5 The specular reflection spectrum of the sample after adding acid is shown in Table 1. The results of the optical parameter test are also shown in Table 1.

[0056] Table 1. Optical parameter test results

[0057]

[0058] Depend on Figures 2-5 As shown in Table 1:

[0059] Hollow silica, with its low refractive index and hollow structure, contributes to high initial diffuse reflection, which is key to creating a transparent and lightweight makeup effect. Importantly, experiments have shown that it exhibits the lowest rate of change in diffuse and specular reflection after simulating sebum infiltration (see Table 1, change rate approximately 19%), demonstrating excellent environmental stability and serving as a solid foundation for long-lasting makeup. Alumina, with its moderate refractive index, provides primary concealing power and can absorb oil to enhance makeup longevity. However, at the cost of its strong absorption, it leads to a significant loss of diffuse reflection after infiltration (a decrease rate of approximately 48%), easily causing dullness and reduced coverage after makeup application. Cerium oxide, with its high refractive index, possesses extremely strong concealing potential, but in the presence of oil, its specular reflection spikes dramatically (change rate 234%), which is the direct cause of unnatural "oily shine" or "fake white" appearance after makeup application.

[0060] This application utilizes hollow silica, known for its excellent stability, as a base to cleverly "anchor" and suppress the deterioration of the optical properties of alumina and cerium oxide in greasy environments. Experimental data (see Table 1) show that the composition of this invention (Example 1) exhibits relatively stable and balanced optical behavior before and after simulating a makeup-wearing environment: the rate of change of diffuse reflection and specular reflection is stably controlled at ideal levels (diffuse reflection rate of approximately 18%, specular reflection rate of approximately 52%); and since 380~480nm belongs to the short-wavelength region of visible light (leaning towards blue-violet light), excessive diffuse reflection from a single raw material (such as cerium oxide) in this region can cause the makeup to appear "grayish and dull," affecting transparency. Hollow silica has excellent diffuse reflection properties, which can compensate for the absorption defects of cerium oxide. Figure 2 As can be seen from the diffuse reflectance spectrum, the composition effectively avoids the excessive reflection of component A and the short-wavelength defects of component C in the visible light range.

[0061] Experimental Example 2

[0062] 2.1 Experimental Procedure

[0063] The concealing power, transparency, makeup lasting power, and balance coefficient of the compositions of cerium oxide, mica, zinc oxide, Example 1, and Comparative Examples 1-3 were tested and evaluated respectively.

[0064] R1 Concealing Power Test: The test sample was mixed with polydimethylsiloxane at a mass ratio of 1:1.67 to obtain a powder paste; the powder paste was then applied to black and white cardstock to form a uniform coating film with a thickness of 60 μm. The brightness L of the coating film on a black substrate was measured using a colorimeter. black Brightness L of white base white Calculate its ratio L black / L white To quantify the product's ability to conceal imperfections in areas of different brightness, the result is expressed as concealing contrast (CR). The closer the CR value is to 1, the stronger the coating's ability to cover the base color, meaning better concealing power.

[0065] R2 Transparency Test: The test sample was mixed with polydimethylsiloxane at a mass ratio of 1:1.67 to obtain a slurry. The slurry was then applied to an artificial leather substrate to form a coating film. The b-value of the substrate before and after coating was measured using a colorimeter, and the Δb value was calculated. If the formed coating film does not significantly change the inherent hue of the substrate itself, i.e., it does not add obvious yellow (positive b-value leans towards yellow) or blue (negative b-value leans towards blue), nor does it cover up the original natural hue of the substrate; the smaller the absolute value of Δb, the less interference the powder has on the hue of the substrate, and the better the transparency.

[0066] R3 Makeup Longevity Test: Weigh 10g of the above test sample, add oleic acid (simulating sebum) drop by drop to the dry powder, and mix until the oil is completely absorbed by the powder, forming a "non-loose, non-dripping" paste-like mixture. Calculate the oil absorption (mass of oil absorbed per 1g of powder) based on the amount of oleic acid consumed. The higher the oil absorption, the better the oil control and the longer the makeup lasts.

[0067] Balance coefficient K calculation: By eliminating the influence of dimensions, this experimental example proposes a transparency-coverage-wearing balance coefficient (K) to evaluate the overall performance of the composition. The calculation formula is: Standardized score = (Current value - Worst value) / (Best value - Worst value) × 100. The specific calculation steps are as follows:

[0068] Step 1: Determine the best and worst values ​​for each indicator. For example, when testing the staying power of R3, the best value among all the current test samples is 0.543, and the worst value is 0.303, which means that 0.543 is 100 points and 0.303 is 0 points.

[0069] Step 2: Calculate the standardized score for each indicator for each sample;

[0070] The calculation is performed using the R3 test results from Example 1 as an example:

[0071] R3 score = (0.526 - 0.303) / (0.543 - 0.303) * 100 = 92.92;

[0072] Similarly, calculate the scores for R1 and R2: R1 = 83.87, R2 = 51.27.

[0073] Step 3: Calculate the performance balance coefficient K (geometric mean);

[0074] Example 1 = (R1*R2*R3)^(1 / 3)≈74.

[0075] The significance analysis between experimental data was performed using the TTEST function, with tails 2 (two-tailed test) and type 3 (two-sample heteroscedasticity t-test) selected to verify whether the difference in means between two independent groups under unequal variances was statistically significant. The test results were expressed as P values ​​(P < 0.05 was considered statistically significant).

[0076] 2.2 Experimental Results

[0077] The results are shown in Tables 2, 3, 4, and 5. Table 2 shows the concealing power test results for Example 2 R1, Table 3 shows the transparency test results for Example 2 R2, Table 4 shows the makeup holding power test results for Example 2 R3, and Table 5 shows the balance coefficient K test results for Example 2.

[0078] Table 2. Results of the concealing power test for R1 in Experiment Example 2

[0079]

[0080] Table 3 Results of R2 Permeability Test in Experiment Example 2

[0081]

[0082] Table 4. Results of the R3 makeup holding power test in Experiment Example 2

[0083]

[0084] Table 5 Test results of equilibrium coefficient K in Experiment Example 2

[0085]

[0086] From Tables 2 to 5, we can see that:

[0087] The combination of cerium oxide with hollow silica and alumina (Example 1) significantly improved the concealing effect of hollow silica and alumina, but did not reduce the transparency and makeup-holding effect of hollow silica and alumina.

[0088] The combination of mica with hollow silica and alumina (Comparative Example 2) did not reduce the makeup-holding effect of hollow silica and alumina, but it significantly reduced the concealing and transparency effects of hollow silica and alumina.

[0089] Although the combination of zinc oxide with hollow silica and alumina (Comparative Example 3) did not reduce the concealing and makeup-holding effects of hollow silica and alumina, it significantly reduced the transparency of hollow silica and alumina.

[0090] Therefore, compared with mica and zinc oxide, the combination of cerium oxide with hollow silica and alumina has better effects in terms of concealing power, transparency, and makeup staying power. Compared with other powder combinations, such as the combination of mica, hollow silica and alumina, or the combination of zinc oxide, hollow silica and alumina, the small-scale combination of hollow silica, alumina and cerium oxide provided in this application significantly improves the concealing effect of hollow silica and alumina, but does not reduce the transparency and makeup staying power of hollow silica and alumina. It has good effects in terms of concealing power, transparency and makeup staying power, and achieves a balance among the three.

[0091] Experimental Example 3

[0092] 3.1 Experimental Procedure

[0093] Prepare the foundation base test material according to the proportions shown in Table 6:

[0094] (1) Add phase A (water, butanediol, magnesium sulfate, phenoxyethanol, octyl glycol, ethylhexylglycerin) to the aqueous phase pot, heat to 80~85℃, stir at 300r / min for 5 minutes until the material is completely dissolved and the system is clear and homogeneous. (2) Add the components of phase B (silica, CI color powder, silicone oil, lauryl PEG-10 tris(trimethoxy)silyl, emulsifier, etc.) to the oil phase pot, heat to 80℃, stir at 500r / min for 3 minutes; then add silica and all CI color powder, disperse with a high-speed disperser (2000r / min) for 5 minutes until the powder is free of agglomeration and the system is fine and free of particles. (3) Keep the two-phase temperature at 80℃, pump phase A into phase B pot at a uniform speed (within 10~15 minutes), and at the same time turn on the emulsifier (1500r / min) to emulsify for 8 minutes until the system is a uniform emulsion. (4) Cool the system to below 45°C, add phase C (polymethylsilsesquioxane, fragrance), stir at 300r / min for 3 minutes until uniform; after the pH (target 5.5~6.5) and viscosity are qualified, discharge the material and let it stand for 24 hours for later use.

[0095] Table 6. Foundation Base Test Material Formulation

[0096]

[0097] Prepare the foundation liquid according to the formula shown in Table 7:

[0098] Table 7 Foundation Formula

[0099]

[0100] The transparency and coverage of the foundation were tested according to the method provided in Test Example 2. The results are shown in Table 8, which presents the test results of Test Example 3 of this application.

[0101] Table 8 Test results of Experimental Example 3 of this application

[0102]

[0103] As shown in Table 8, when the composition of Example 1 was added at 1%, it showed significant improvement in the edge of the concealer and a significant improvement in the transparency. This indicates that the composition can be effective when added at 1% in the formulation. Using higher addition amounts of 5% and 10% also showed a positive trend in improving the transparency and concealer properties of the formulation.

[0104] Test Example 4

[0105] Considering that the formulation product and the raw material composition are not compatible with the same test method for "makeup holding power", the in vitro test of "makeup holding power" is verified by clinical sensory testing.

[0106] Prepare the foundation according to the formula shown in Table 9 (process as in Experiment 3). Recruit 26 volunteers and evaluate their satisfaction with the "8-hour makeup staying power without caking" effect. Satisfaction is defined as the percentage of volunteers who scored 4.5 or higher (out of 5).

[0107] Table 9 Foundation Formula

[0108]

[0109]

[0110] The results are shown in Table 10, which presents the sensory evaluation results of Test Example 4 of this application.

[0111] Table 10 Clinical sensory test results (N=26)

[0112]

[0113] As can be seen from Examples 5 and 6 in Table 10, the addition of the composition of Example 1 has an improving effect on the overall makeup staying power.

[0114] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A composition that achieves a balanced makeup effect through optical effects, comprising: Hollow silica, alumina and cerium oxide in a mass ratio of 15~25:45~70:10~20; The hollow silica has a refractive index of 1.29, a particle size of 4 μm, a specific gravity of 1.4, and a porosity of 32%. The alumina has a refractive index of 1.76 and a particle size of 1 μm to 16 μm; The cerium oxide has a refractive index of 2.1, a particle size of 200 nm to 5 μm, and a Ce content of [missing information]. 3+ The proportion is 30% to 38%.

2. The composition according to claim 1, characterized in that, It includes hollow silica, alumina and cerium oxide in a mass ratio of 21~22:45~67:15~20.

3. The composition according to claim 1, characterized in that, It includes hollow silica, alumina and cerium oxide in a mass ratio of 20:65:

15.

4. A cosmetic composition comprising the composition according to any one of claims 1 to 3.

5. The cosmetic composition according to claim 4, characterized in that, The content of the composition is 0.1wt% to 15wt%.

6. The cosmetic composition according to claim 5, characterized in that, It can be liquid foundation, pressed powder, or loose powder.

7. Use of the composition according to any one of claims 1 to 3 in the preparation of a product that combines concealing, translucency and long-lasting makeup effects.

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