Moisturizing makeup setting loose powder and preparation method thereof

Abstract

The invention relates to the technical field of cosmetics, and in particular to a moisturizing makeup setting loose powder and a preparation method thereof. The moisturizing makeup setting loose powder comprises the following raw materials in percentage by weight: 2.5-3.5% of a moisturizer, 3-5.5% of an emollient, 0.2-0.5% of an antioxidant, 10-15% of deionized water, and the balance is a base powder; the base powder comprises the following raw materials: dimethyl silylate silica, titanium dioxide / zinc oxide / silica composite powder, polymethylsilsesquioxane, and the balance is oleic acid-modified synthetic fluorphlogopite; the makeup setting loose powder obtained by the invention has excellent oil control and makeup setting effects, can effectively brighten skin tone, make skin delicate and smooth, has good blemish-covering ability, maintains good moisturizing performance, and has high overall stability.

Description

Technical Field

[0001] The invention relates to the technical field of cosmetics, and in particular to a moisturizing makeup-setting loose powder and a preparation method thereof. Background Art

[0002] As a delicate little item in the cosmetics industry, setting powder has become the secret weapon for many beauty lovers to create long-lasting makeup with its delicate and light powder. It can effectively absorb excess facial oil, reduce oily shine, and keep the makeup fresh for a long time. At the same time, setting powder can also adjust the skin tone, even out the skin tone, cover minor flaws, and make the skin look more delicate and smooth. Whether you are pursuing a natural nude makeup or a delicate makeup, setting powder is an indispensable step. Choosing a setting powder that suits you can not only make your makeup more perfect and lasting, but also enhance the texture of the overall makeup.

[0003] One of the main functions of loose powder is oil control, which keeps makeup fresh by absorbing excess oil on the face. This feature is particularly evident on oily or combination skin, but correspondingly, it may reduce the moisture on the skin surface, resulting in insufficient moisturizing effect. In response to this, there is a need to develop loose powder with better moisturizing effect.

[0004] The domestic patent with application number 202110490464.5 discloses a moisturizing setting powder and its preparation method. The moisturizing setting powder includes the following components: Phase A: 50% synthetic fluorphlogopite, 20% mica, 20% silica, 0.55% titanium dioxide, 1% aluminum starch octenylsuccinate and 1% tin oxide; Phase B: 2% cetyl ethylhexanoate and 3.8% polydimethylsiloxane; Phase C: 1% ethylhexylglycerol and 0.5% 1,2-hexanediol; Phase D: 0.15% gellan gum, with a particle size of 1.5-2μm. This patent uses the reversible water absorption capacity of gellan gum itself to enhance the stability of the setting powder, increase the moisturizing effect, and at the same time have the beneficial effect of being able to be used in a superimposed manner. However, for the above-mentioned moisturizing setting powder, if the skin is in contact with gellan gum for a long time, it may cause problems such as dry skin and desquamation. Summary of the invention

[0005] The purpose of the present invention is to provide a moisturizing makeup setting loose powder and a preparation method thereof. The obtained makeup setting loose powder has excellent oil control and makeup setting effects, can effectively brighten the skin tone, make the skin delicate and smooth, has good blemish-covering ability, maintains good moisturizing performance, and has high overall stability.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A moisturizing makeup setting loose powder, comprising the following raw materials in percentage by weight: 2.5-3.5% moisturizer, 3-5.5% emollient, 0.2-0.5% antioxidant, 10-15% deionized water, and the balance being a base powder;

[0008] The basic powder comprises the following raw materials: silica dimethyl silylate, titanium dioxide / zinc oxide / silica composite powder, polymethylsilsesquioxane, and the balance is oleic acid-modified synthetic fluorphlogopite.

[0009] Preferably, the base powder is composed of the following raw materials in weight percentage: 10-15% silica dimethyl silylate, 15-20% titanium dioxide / zinc oxide / silica composite powder, 10-15% polymethylsilsesquioxane, and the remainder is oleic acid-modified synthetic fluorphlogopite.

[0010] Preferably, the moisturizing agent is composed of sodium hyaluronate and glycerin in a mass ratio of 3-5:1.5-3.

[0011] Preferably, the preparation method of the oleic acid-modified synthetic fluorphlogopite comprises the following steps:

[0012] The synthetic fluorphlogopite is dispersed in an ethanol-water mixed solution, and then an oleic acid ethanol solution is added, and then the reaction kettle is sealed, and the temperature is raised to 160-170° C. while stirring for hydrothermal reaction for 10-15 hours, and then cooled to room temperature, and then filtered, and washed with deionized water and ethanol respectively, and then dried to obtain the oleic acid-modified synthetic fluorphlogopite.

[0013] Preferably, the mass ratio of the synthetic fluorphlogopite to the oleic acid in the oleic acid ethanol solution is 100:2.5-3.5;

[0014] The mass ratio of the synthetic fluorphlogopite to the ethanol-water mixed solution is 1:14-15; in the ethanol-water mixed solution, the mass ratio of ethanol to water is 1:0.1-0.2; in the oleic acid ethanol solution, the mass fraction of oleic acid is 8-10%.

[0015] Preferably, the method for preparing the titanium dioxide / zinc oxide / silica composite powder comprises the following steps:

[0016] The titanium dioxide sol and the zinc oxide sol are mixed evenly, and then silica is added and stirred for 20-30 minutes, and then filtered, and the obtained filter material is vacuum dried to obtain xerogel-coated silica;

[0017] The dry gel-coated silica is calcined in a nitrogen atmosphere at a temperature of 600-630° C. for 3-5 hours to obtain a titanium dioxide / zinc oxide / silica composite powder.

[0018] Preferably, the mass ratio of the titanium dioxide sol to the zinc oxide sol is 1:1-1.5; and the particle size of the silica is 6-10 μm.

[0019] Preferably, the preparation method of the titanium dioxide sol comprises the following steps: adding 0.06-0.07L of deionized water and 0.03-0.035L of acetic acid to 1L of ethanol, mixing evenly, and then dripping 0.2-0.25L of tetrabutyl titanate, and continuing to stir for 1-1.5h after the dripping is complete, to obtain the titanium dioxide sol;

[0020] The preparation method of the zinc oxide sol comprises the following steps: dissolving 0.045-0.06 mol of sodium hydroxide in 1 L of anhydrous methanol to prepare a sodium hydroxide methanol solution; adding 0.015-0.02 mol of zinc acetate to 1 L of anhydrous methanol, heating to 50-55° C. and stirring for 20-30 min, then dripping the sodium hydroxide methanol solution while stirring, and continuing to stir for 2-2.5 h after the dripping is completed, so as to obtain the zinc oxide sol.

[0021] Preferably, the emollient is polydimethylsiloxane or a combination of polydimethylsiloxane and diisostearyl malate; when the emollient is a combination of polydimethylsiloxane and diisostearyl malate, the mass ratio of polydimethylsiloxane to diisostearyl malate is 1:0.5-0.8;

[0022] The antioxidant is ascorbic acid, tocopherol or a combination of both.

[0023] As a general inventive concept, the present invention provides a method for preparing the above-mentioned moisturizing makeup setting loose powder, comprising the following steps:

[0024] S1: placing oleic acid-modified synthetic fluorphlogopite, dimethyl silylated silica, titanium dioxide / zinc oxide / silica composite powder, and polymethylsilsesquioxane in a high-speed mixer and mixing them evenly to obtain a base powder;

[0025] S2: adding a moisturizer to deionized water, stirring and mixing, then adding an emollient and an antioxidant, stirring and mixing, and then adding a base powder and stirring and mixing evenly, and then performing vacuum freeze drying, and then air flow pulverization to obtain the moisturizing makeup setting loose powder.

[0026] The beneficial effects of the present invention are:

[0027] 1. The present invention adopts oleic acid to synthetic fluorphlogopite, so that oleic acid is grafted on the surface of the synthetic fluorphlogopite, which can improve the moisturizing performance of the obtained oleic acid-modified synthetic fluorphlogopite, help the skin lock moisture and nutrients, prevent moisture loss on the skin surface, and keep the skin moisturized. At the same time, the dispersibility of the oleic acid-modified synthetic fluorphlogopite is also higher than that of the synthetic fluorphlogopite, so that the prepared loose powder can better improve the skin texture and make the skin look more delicate and smooth.

[0028] When preparing oleic acid-modified synthetic fluorphlogopite, the present invention selects an appropriate amount of oleic acid and performs modification under appropriate conditions, thereby improving the moisture retention, lubricity, dispersibility, etc. of the synthetic fluorphlogopite as a whole. If the amount of oleic acid is too little, the modification effect is not obvious. If the amount of oleic acid is too much, the dispersibility of the oleic acid-modified synthetic fluorphlogopite will decrease, and the decrease in dispersibility will directly affect the quality of the loose powder.

[0029] 2. The base powder of the present invention contains an appropriate amount of titanium dioxide / zinc oxide / silica composite powder, which contains silica and nano titanium dioxide and nano zinc oxide loaded on the surface of silica. Nano titanium dioxide and nano zinc oxide are loaded on the surface of silica at the same time, so that nano titanium dioxide and nano zinc oxide can be well dispersed in the loose powder, which can effectively reflect and scatter ultraviolet rays, so that the resulting loose powder has higher sun protection performance and has the function of adjusting skin color, so that the loose powder has higher blemish-covering ability and improves the texture of the overall makeup.

[0030] In addition, compared with zinc oxide / silica composite powders prepared by a similar method, the titanium dioxide / zinc oxide / silica composite powder of the present invention can show better sun protection effect because it is loaded with nano titanium dioxide; and compared with titanium dioxide / silica composite powders prepared by a similar method, the oil control and moisturizing effects are better, which may be because the effect of nano titanium dioxide in absorbing oil and moisture is worse than that of nano zinc oxide. If only nano titanium dioxide is loaded on the surface of the silica composite powder, the oil control and moisturizing effects will be weakened.

[0031] 3. When preparing the moisturizing makeup setting loose powder, the present invention adopts oleic acid-modified synthetic fluorphlogopite, dimethyl silica silylate, titanium dioxide / zinc oxide / silica composite powder, and polymethylsilsesquioxane as the base powder, and is combined with specific moisturizers, emollients, etc., so that the makeup setting loose powder has excellent oil control and makeup setting effects, can effectively brighten the skin tone, make the skin delicate and smooth, has good blemish-covering ability, and maintains good moisturizing performance, while having high overall stability and excellent sun protection performance. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Preparation Example 1:

[0034] A method for preparing oleic acid-modified synthetic fluorphlogopite comprises the following steps:

[0035] The synthetic fluorphlogopite is dispersed in an ethanol-water mixed solution, and then an oleic acid ethanol solution is added. Then the reaction kettle is sealed, and the temperature is raised to 165° C. for hydrothermal reaction for 15 hours while stirring. Then the mixture is cooled to room temperature, filtered, washed with deionized water and ethanol respectively, and dried to obtain the oleic acid-modified synthetic fluorphlogopite.

[0036] The mass ratio of synthetic fluorphlogopite to ethanol-water mixed solution is 1:15, and the mass ratio of ethanol to water in the ethanol-water mixed solution is 1:0.1; the mass fraction of oleic acid in the oleic acid ethanol solution is 10%; the mass ratio of oleic acid in the synthetic fluorphlogopite to oleic acid ethanol solution is 100:3.

[0037] Preparation Example 2:

[0038] A method for preparing oleic acid-modified synthetic fluorphlogopite comprises the following steps:

[0039] The synthetic fluorphlogopite is dispersed in an ethanol-water mixed solution, and then an oleic acid ethanol solution is added, and then the reaction kettle is sealed, and the temperature is raised to 160° C. for hydrothermal reaction for 10 hours while stirring, and then cooled to room temperature, and then filtered, and washed with deionized water and ethanol respectively, and then dried to obtain the oleic acid-modified synthetic fluorphlogopite.

[0040] The mass ratio of synthetic fluorphlogopite to ethanol-water mixed solution is 1:14, and the mass ratio of ethanol to water in the ethanol-water mixed solution is 1:0.15; the mass fraction of oleic acid in the oleic acid ethanol solution is 8%; the mass ratio of oleic acid in the synthetic fluorphlogopite to oleic acid ethanol solution is 100:3.5.

[0041] Preparation Example 3:

[0042] A method for preparing oleic acid-modified synthetic fluorphlogopite comprises the following steps:

[0043] The synthetic fluorphlogopite is dispersed in an ethanol-water mixed solution, and then an oleic acid ethanol solution is added. Then the reaction kettle is sealed, and the temperature is raised to 170° C. for hydrothermal reaction for 12 hours while stirring. Then the mixture is cooled to room temperature, filtered, washed with deionized water and ethanol respectively, and dried to obtain the oleic acid-modified synthetic fluorphlogopite.

[0044] The mass ratio of synthetic fluorphlogopite to ethanol-water mixed solution is 1:15, and the mass ratio of ethanol to water in the ethanol-water mixed solution is 1:0.2; the mass fraction of oleic acid in the oleic acid ethanol solution is 8%; the mass ratio of oleic acid in the synthetic fluorphlogopite to oleic acid ethanol solution is 100:2.5.

[0045] Preparation Example 4:

[0046] A method for preparing a titanium dioxide / zinc oxide / silica composite powder comprises the following steps:

[0047] 1) Preparation of titanium dioxide sol: Add 0.07 L of deionized water and 0.035 L of acetic acid to 1 L of ethanol, mix well, then drop 0.22 L of tetrabutyl titanate. After the addition is complete, continue stirring for 1.5 h to obtain titanium dioxide sol.

[0048] 2) Preparation of zinc oxide sol: dissolve 0.045 mol of sodium hydroxide in 1 L of anhydrous methanol to prepare a sodium hydroxide methanol solution; add 0.015 mol of zinc acetate to 1 L of anhydrous methanol, heat to 50 °C and stir for 25 min, then add the sodium hydroxide methanol solution dropwise while stirring, and continue stirring for 2.5 h after the addition is complete to obtain zinc oxide sol.

[0049] 3) Titanium dioxide sol and zinc oxide sol are mixed evenly in a mass ratio of 1:1.5, and then silica (particle size of 6-10 μm) is added and stirred for 30 minutes, and then filtered. The obtained filter material is vacuum dried to obtain dry gel-coated silica.

[0050] 4) The dry gel-coated silica was calcined in a nitrogen atmosphere at a temperature of 630° C. for 5 h to obtain a titanium dioxide / zinc oxide / silica composite powder.

[0051] Preparation Example 5:

[0052] A method for preparing a titanium dioxide / zinc oxide / silica composite powder comprises the following steps:

[0053] 1) Preparation of titanium dioxide sol: Add 0.06 L of deionized water and 0.03 L of acetic acid to 1 L of ethanol, mix well, then drop 0.2 L of tetrabutyl titanate. After the addition is complete, continue stirring for 1 hour to obtain titanium dioxide sol.

[0054] 2) Preparation of zinc oxide sol: dissolve 0.06 mol of sodium hydroxide in 1 L of anhydrous methanol to prepare a sodium hydroxide methanol solution; add 0.02 mol of zinc acetate to 1 L of anhydrous methanol, heat to 55°C for 30 min, then dropwise add the sodium hydroxide methanol solution while stirring, and continue stirring for 2.5 h after the addition is complete to obtain zinc oxide sol.

[0055] 3) Titanium dioxide sol and zinc oxide sol are mixed evenly in a mass ratio of 1:1, and silica (particle size of 6-10 μm) is added and stirred for 20 minutes, and then filtered. The obtained filter material is vacuum dried to obtain dry gel-coated silica.

[0056] 4) The dry gel-coated silica was calcined in a nitrogen atmosphere at a temperature of 600° C. for 5 h to obtain a titanium dioxide / zinc oxide / silica composite powder.

[0057] Preparation Example 6:

[0058] A method for preparing a titanium dioxide / zinc oxide / silica composite powder comprises the following steps:

[0059] 1) Preparation of titanium dioxide sol: Add 0.07 L of deionized water and 0.03 L of acetic acid to 1 L of ethanol, mix well, then drop 0.25 L of tetrabutyl titanate, and continue stirring for 1.5 h after the addition is complete to obtain titanium dioxide sol;

[0060] 2) Preparation of zinc oxide sol: dissolve 0.06 mol of sodium hydroxide in 1 L of anhydrous methanol to prepare a sodium hydroxide methanol solution; add 0.02 mol of zinc acetate to 1 L of anhydrous methanol, heat to 55 °C and stir for 20 min, then dropwise add the sodium hydroxide methanol solution while stirring, and continue stirring for 2 h after the addition is complete to obtain zinc oxide sol.

[0061] 3) Titanium dioxide sol and zinc oxide sol are mixed evenly in a mass ratio of 1:1.2, and silica (particle size of 6-10 μm) is added and stirred for 25 minutes, and then filtered. The obtained filter material is vacuum dried to obtain dry gel-coated silica.

[0062] 4) The dry gel-coated silica was calcined in a nitrogen atmosphere at a temperature of 620° C. for 3 h to obtain a titanium dioxide / zinc oxide / silica composite powder.

[0063] Embodiment 1:

[0064] A moisturizing makeup-setting loose powder comprises the following raw materials in percentage by weight: 3% moisturizer, 4% emollient, 0.2% ascorbic acid, 15% deionized water, and the balance is base powder.

[0065] The basic powder of this embodiment is composed of the following raw materials in weight percentage: 12% of dimethyl silylated silica, 20% of titanium dioxide / zinc oxide / silica composite powder, 12% of polymethylsilsesquioxane, and the balance is oleic acid-modified synthetic fluorphlogopite. The titanium dioxide / zinc oxide / silica composite powder is prepared by the method in Preparation Example 5, and the oleic acid-modified synthetic fluorphlogopite is prepared by the method in Preparation Example 1.

[0066] The moisturizer is composed of sodium hyaluronate and glycerin in a mass ratio of 5:3.

[0067] The emollient is composed of polydimethylsiloxane and diisostearyl malate in a mass ratio of 1:0.5.

[0068] The preparation method of the moisturizing makeup setting loose powder in this embodiment comprises the following steps:

[0069] S1: placing oleic acid-modified synthetic fluorphlogopite, dimethyl silylated silica, titanium dioxide / zinc oxide / silica composite powder, and polymethylsilsesquioxane in a high-speed mixer and mixing them evenly to obtain a base powder;

[0070] S2: Add moisturizer to deionized water, stir and mix, then add emollient and antioxidant, stir and mix, then add base powder and stir and mix evenly, then perform vacuum freeze drying, and then perform air flow pulverization to obtain moisturizing makeup setting loose powder.

[0071] Embodiment 2:

[0072] A moisturizing makeup-setting loose powder comprises the following raw materials in percentage by weight: 2.8% of a moisturizing agent, 5.5% of an emollient, 0.3% of an antioxidant, 12% of deionized water, and the remainder being a base powder.

[0073] The basic powder of this embodiment is composed of the following raw materials in weight percentage: 15% dimethyl silylation silica, 18% titanium dioxide / zinc oxide / silica composite powder, 13% polymethylsilsesquioxane, and the balance is oleic acid modified synthetic fluorphlogopite. The titanium dioxide / zinc oxide / silica composite powder is prepared by the method in Preparation Example 4, and the oleic acid modified synthetic fluorphlogopite is prepared by the method in Preparation Example 3.

[0074] The moisturizer is composed of sodium hyaluronate and glycerin in a mass ratio of 2:1.

[0075] The emollient is composed of polydimethylsiloxane and diisostearyl malate in a mass ratio of 1:0.5. The antioxidant is composed of ascorbic acid and tocopherol in a mass ratio of 1:1.

[0076] The preparation method of the moisturizing setting powder in this embodiment is the same as that in Example 1.

[0077] Embodiment 3:

[0078] A moisturizing makeup-setting loose powder comprises the following raw materials in percentage by weight: 3.5% moisturizer, 3% polydimethylsiloxane, 0.5% antioxidant, 10% deionized water, and the balance is base powder.

[0079] The basic powder of this embodiment is composed of the following raw materials in weight percentage: 15% dimethyl silylation silica, 20% titanium dioxide / zinc oxide / silica composite powder, 10% polymethylsilsesquioxane, and the balance is oleic acid modified synthetic fluorphlogopite. The titanium dioxide / zinc oxide / silica composite powder is prepared by the method in Preparation Example 5, and the oleic acid modified synthetic fluorphlogopite is prepared by the method in Preparation Example 1.

[0080] The moisturizer is composed of sodium hyaluronate and glycerin in a mass ratio of 2:1.

[0081] The antioxidant is composed of ascorbic acid and tocopherol in a mass ratio of 1:1.

[0082] The preparation method of the moisturizing setting powder in this embodiment is the same as that in Example 1.

[0083] Embodiment 4:

[0084] A moisturizing makeup-setting loose powder comprises the following raw materials in percentage by weight: 2.5% of a moisturizing agent, 4% of an emollient, 0.3% of an antioxidant, 12% of deionized water, and the remainder being a base powder.

[0085] The basic powder of this embodiment is composed of the following raw materials in weight percentage: 10% dimethyl silylation silica, 18% titanium dioxide / zinc oxide / silica composite powder, 12% polymethylsilsesquioxane, and the balance is oleic acid modified synthetic fluorphlogopite. The titanium dioxide / zinc oxide / silica composite powder is prepared by the method in Preparation Example 4, and the oleic acid modified synthetic fluorphlogopite is prepared by the method in Preparation Example 2.

[0086] The moisturizer is composed of sodium hyaluronate and glycerin in a mass ratio of 4:3.

[0087] The emollient is composed of polydimethylsiloxane and diisostearyl malate in a mass ratio of 1:0.8. The antioxidant is composed of ascorbic acid and tocopherol in a mass ratio of 1:1.

[0088] The preparation method of the moisturizing setting powder in this embodiment is the same as that in Example 1.

[0089] Embodiment 5:

[0090] A moisturizing makeup setting loose powder comprises the following raw materials in percentage by weight: 3% moisturizer, 4.5% polydimethylsiloxane, 0.3% ascorbic acid, 13% deionized water, and the balance is base powder.

[0091] The basic powder of this embodiment is composed of the following raw materials in weight percentage: 12% dimethyl silylation silica, 15% titanium dioxide / zinc oxide / silica composite powder, 15% polymethylsilsesquioxane, and the balance is oleic acid modified synthetic fluorphlogopite. The titanium dioxide / zinc oxide / silica composite powder is prepared by the method in Preparation Example 6, and the oleic acid modified synthetic fluorphlogopite is prepared by the method in Preparation Example 3.

[0092] The moisturizer is composed of sodium hyaluronate and glycerin in a mass ratio of 3:2.

[0093] The preparation method of the moisturizing setting powder in this embodiment is the same as that in Example 1.

[0094] Embodiment 6:

[0095] A moisturizing makeup-setting loose powder comprises the following raw materials in percentage by weight: 3.1% of a moisturizing agent, 4.5% of an emollient, 0.3% of an antioxidant, 11% of deionized water, and the remainder being a base powder.

[0096] The basic powder of this embodiment is composed of the following raw materials in weight percentage: 15% dimethyl silylation silica, 15% titanium dioxide / zinc oxide / silica composite powder, 15% polymethylsilsesquioxane, and the balance is oleic acid modified synthetic fluorphlogopite. The titanium dioxide / zinc oxide / silica composite powder is prepared by the method in Preparation Example 5, and the oleic acid modified synthetic fluorphlogopite is prepared by the method in Preparation Example 1.

[0097] The moisturizer is composed of sodium hyaluronate and glycerin in a mass ratio of 5:2.

[0098] The emollient is composed of polydimethylsiloxane and diisostearyl malate in a mass ratio of 1:0.7. The antioxidant is composed of ascorbic acid and tocopherol in a mass ratio of 1:1.

[0099] The preparation method of the moisturizing setting powder in this embodiment is the same as that in Example 1.

[0100] Comparative Example 1:

[0101] The difference from Example 6 is that the oleic acid-modified synthetic fluorphlogopite is replaced by synthetic fluorphlogopite.

[0102] Comparative Example 2:

[0103] Different from Example 6, the mass ratio of synthetic fluorphlogopite to oleic acid in the oleic acid ethanol solution is 100:5.

[0104] Comparative Example 3:

[0105] Different from Example 6, the mass ratio of synthetic fluorphlogopite to oleic acid in the oleic acid ethanol solution is 100:1.

[0106] Comparative Example 4:

[0107] The difference from Example 6 is that the titanium dioxide / zinc oxide / silica composite powder is replaced by titanium dioxide / silica composite powder.

[0108] The preparation method of titanium dioxide / silica composite powder comprises the following steps:

[0109] 1) Preparation of titanium dioxide sol: Add 0.06 L of deionized water and 0.03 L of acetic acid to 1 L of ethanol, mix well, then drop 0.2 L of tetrabutyl titanate. After the addition is complete, continue stirring for 1 hour to obtain titanium dioxide sol.

[0110] 3) Add silica (particle size of 6-10 μm) to the titanium dioxide sol, mix and stir for 20 minutes, then filter, and vacuum dry the obtained filter material to obtain xerogel-coated silica.

[0111] 4) The dry gel-coated silica was calcined in a nitrogen atmosphere at a temperature of 600° C. for 5 h to obtain a titanium dioxide / silica composite powder.

[0112] Comparative Example 5:

[0113] The basic powder of this embodiment is composed of the following raw materials in percentage by weight: 30% of silica dimethyl silylate, 15% of polymethylsilsesquioxane, and the balance is synthetic fluorphlogopite.

[0114] Performance Testing:

[0115] 1. Stability test

[0116] The loose powder in Example 1 was filled in a colorless transparent glass container and stored at 50°C, 45°C, 25°C, 5°C, and -10°C for 8 weeks, and then the properties of the loose powder were observed. After returning to room temperature, a small amount of the loose powder was applied to the back of the hand, and its performance was evaluated, where A indicated that the loose powder was uniform and normal; B indicated that the loose powder had a small amount of clumping and adhesion; and C indicated that the loose powder had a larger particle size, obvious clumping, and could not be applied normally. The test results are shown in Table 1.

[0117] Table 1:

[0118]

[0119] As shown in Table 1, the loose powders in the embodiments of the present invention and the comparative examples all have high stability. As shown in the comparison between Embodiment 6 and Comparative Example 2, if an excessive amount of oleic acid is used for modification, the high temperature stability of the obtained loose powder will be deteriorated. As shown in the comparison between Embodiment 6 and Comparative Example 5, when the base powder is composed of silica dimethyl silylate, polymethylsilsesquioxane, and synthetic fluorphlogopite, the high temperature stability of the loose powder will be poor.

[0120] 2. Usage effect test

[0121] The use effects of the loose powders prepared in Examples 1-6 and Comparative Examples 1-5 were tested. Female volunteers were asked to provide feedback on their feelings after use, and the results were statistically analyzed.

[0122] Test population: 110 female volunteers aged 20-30 years old, randomly divided into 11 groups, 10 people in each group.

[0123] Test method: After basic skin care and light makeup in the same process, 11 groups of female volunteers tried the samples of Examples 1-6 and Comparative Examples 1-5 on their faces (each group used one sample). The dosage was 1.0 g each time, once a day, for one month. The satisfaction was 0-5 points, with 5 points as the full score. The average satisfaction results of the test are shown in Table 2.

[0124] Table 2:

[0125]

[0126] As shown in Table 2, the loose powder in Examples 1-6 of the present invention has excellent use effects as a whole. As shown in Comparative Example 1 and Example 6, the synthetic fluorphlogopite is modified with an appropriate amount of oleic acid, which can significantly improve the moisturizing, makeup setting, and delicate and smooth effects of the loose powder. As shown in Comparative Example 2 and Example 6, if the oleic acid is excessive, although the moisturizing effect will be slightly enhanced, the makeup setting, oil control, and delicate and smooth effects will be significantly reduced. As shown in Comparative Example 3 and Example 6, if the amount of oleic acid added is small, the moisturizing, makeup setting, and delicate and smooth effects will be reduced. As shown in Comparative Example 4 and Example 6, compared with titanium dioxide / silica composite powder, titanium dioxide / zinc oxide / silica composite powder has better oil control and moisturizing effects, and other effects are also improved. As shown in Comparative Example 5 and Example 6, when the base powder is composed of dimethyl silylated silica, polymethylsilsesquioxane, and synthetic fluorphlogopite, each use effect will be reduced.

[0127] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A moisturizing makeup setting loose powder, characterized in that: The raw materials include the following weight percentages: 2.5-3.5% moisturizer, 3-5.5% emollient, 0.2-0.5% antioxidant, 10-15% deionized water, and the balance is base powder; The base powder is composed of the following raw materials in weight percentage: 10-15% of dimethyl silylate silica, 15-20% of titanium dioxide / zinc oxide / silica composite powder, 10-15% of polymethylsilsesquioxane, and the balance is oleic acid-modified synthetic fluorphlogopite; The preparation method of the oleic acid modified synthetic fluorphlogopite comprises the following steps: Dispersing synthetic fluorphlogopite in an ethanol-water mixed solution, adding an oleic acid ethanol solution, and then sealing the reactor, heating to 160-170° C. for hydrothermal reaction for 10-15 hours while stirring, and then cooling to room temperature, filtering, and washing with deionized water and ethanol respectively, and then drying to obtain the oleic acid-modified synthetic fluorphlogopite; The mass ratio of the synthetic fluorphlogopite to the oleic acid in the oleic acid ethanol solution is 100:2.5-3.5; The mass ratio of the synthetic fluorphlogopite to the ethanol-water mixed solution is 1:14-15; in the ethanol-water mixed solution, the mass ratio of ethanol to water is 1:0.1-0.2; in the oleic acid ethanol solution, the mass fraction of oleic acid is 8-10%; The preparation method of the titanium dioxide / zinc oxide / silica composite powder comprises the following steps: The titanium dioxide sol and the zinc oxide sol are mixed evenly, and then silica is added and stirred for 20-30 minutes, and then filtered, and the obtained filter material is vacuum dried to obtain xerogel-coated silica; The xerogel-coated silica is calcined in a nitrogen atmosphere at a temperature of 600-630° C. for 3-5 hours to obtain a titanium dioxide / zinc oxide / silica composite powder; The mass ratio of the titanium dioxide sol to the zinc oxide sol is 1:1-1.5; the particle size of the silica is 6-10 μm.

2. The moisturizing setting powder according to claim 1, characterized in that: The moisturizing agent is composed of sodium hyaluronate and glycerin in a mass ratio of 3-5:1.5-3.

3. The moisturizing makeup setting powder according to claim 1, characterized in that: The preparation method of the titanium dioxide sol comprises the following steps: adding 0.06-0.07L of deionized water and 0.03-0.035L of acetic acid to 1L of ethanol, mixing evenly, and then dripping 0.2-0.25L of tetrabutyl titanate, and continuing to stir for 1-1.5h after the dripping is complete, so as to obtain the titanium dioxide sol; The preparation method of the zinc oxide sol comprises the following steps: dissolving 0.045-0.06 mol of sodium hydroxide in 1 L of anhydrous methanol to prepare a sodium hydroxide methanol solution; adding 0.015-0.02 mol of zinc acetate to 1 L of anhydrous methanol, heating to 50-55° C. and stirring for 20-30 min, then dripping the sodium hydroxide methanol solution while stirring, and continuing to stir for 2-2.5 h after the dripping is completed, so as to obtain the zinc oxide sol.

4. The moisturizing makeup setting powder according to claim 1, characterized in that: The emollient is polydimethylsiloxane or a combination of polydimethylsiloxane and diisostearyl malate; when the emollient is a combination of polydimethylsiloxane and diisostearyl malate, the mass ratio of polydimethylsiloxane to diisostearyl malate is 1:0.5-0.8; The antioxidant is ascorbic acid, tocopherol or a combination of both.

5. A method for preparing the moisturizing makeup setting loose powder according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: placing oleic acid-modified synthetic fluorphlogopite, dimethyl silylated silica, titanium dioxide / zinc oxide / silica composite powder, and polymethylsilsesquioxane in a high-speed mixer and mixing them evenly to obtain a base powder; S2: adding a moisturizer to deionized water, stirring and mixing, then adding an emollient and an antioxidant, stirring and mixing, and then adding a base powder and stirring and mixing evenly, and then performing vacuum freeze drying, and then air flow pulverization to obtain the moisturizing makeup setting loose powder.

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