Oil-in-water type powder liquid as well as preparation method and application thereof

Abstract

The invention relates to the technical field of cosmetics, and particularly discloses oil-in-water type powder liquid as well as a preparation method and application thereof.The powder liquid is prepared from xanthan gum, a humectant, an emollient, an emulsifier, a coloring agent, oil absorption powder, a preservative and water, and an interpenetrating molecular network is formed by a macromolecular net structure of the xanthan gum and emulsifiers with different HLB values; and a powder-liquid system with multiple stable mechanisms is constructed. The obtained powder liquid not only shows excellent layering resistance and demulsification resistance under the condition of a wide temperature range, but also realizes dynamic balance of a strong oil-control makeup-fixing effect and long-acting moisturizing, the skin feeling is fresh and not greasy, and the problems that an existing makeup-fixing product is poor in stability, the skin feeling is sticky and greasy, and water-oil balance is difficult to realize are solved.

Description

Technical Field

[0001] The present application relates to the field of cosmetic technology, and in particular to an oil-in-water formulation powder liquid, a preparation method thereof, and an application thereof. Background Art

[0002] Traditional setting makeup products primarily fall into three categories: pressed powder, loose powder, and setting spray. These products suffer from significant flaws in their technical principles and formula architecture. Pressed powder and loose powder achieve oil-control and setting effects by absorbing surface oils with a high percentage of powder (such as silica and mica). The formulas often incorporate small amounts of binders (such as zinc stearate) and emollients (such as squalane) to enhance pressability or reduce the dryness of the powder. However, due to their high density, these solid powder products tend to overabsorb surface moisture, leading to powder floating, sticking, and barrier damage in those with dry skin. While adding emollients can alleviate dryness, it weakens oil-control capabilities, making it difficult to balance moisturizing and oil-control needs. Furthermore, powders can easily form suspended dust during handling, posing a risk of respiratory inhalation. Setting spray relies on film-forming agents (such as acrylate copolymers) to form a makeup-locking film on the skin surface. Moisturizers (such as glycerin) are often used in the formula to reduce irritation. However, its film-forming speed is slow, it feels very sticky, and its low viscosity makes it difficult to carry oil-absorbing powders, resulting in insufficient oil-control performance and an inability to meet the needs of oily skin.

[0003] The existing technology proposes the following improvement strategies for the above-mentioned setting makeup products: CN113876602A improves the adsorption of powder by compounding silica, nylon-12 and polymethyl methacrylate, but does not solve the problem of drying caused by moisture absorption of powder; CN113057904A introduces ethylhexyl palmitate and silk protein to alleviate dryness, but the oil control efficiency is weakened by the addition of oil; CN113181067A compounds polydimethylsiloxane and tocopheryl acetate in loose powder to improve skin feel, but the risk of dust inhalation is still not avoided; the setting spray technology represented by CN117815152A enhances film-forming properties by sodium carboxymethyl starch and stearoyl inulin, but the high film-forming agent and high moisturizer content lead to obvious stickiness, and the oil-absorbing powder cannot be stably suspended, and the oil control effect is limited.

[0004] It can be seen that the existing technology is limited to two makeup setting paths: "solid powder adsorption" or "liquid film formation". Its formula framework is not only difficult to balance the contradiction between oil control and moisturizing, but also difficult to take into account the stability of makeup and good skin feel. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide an oil-in-water formulation powder liquid and its preparation method and application, which are used to solve the problems of existing makeup setting products such as poor stability, sticky skin feel, and difficulty in achieving water-oil balance.

[0006] To achieve the above technical objectives, the present application provides an oil-in-water dosage form powder liquid, comprising the following components in percentage by mass:

[0007] Xanthan gum 0.1~0.8%;

[0008] Moisturizer 5~15%;

[0009] Emollient 0.5~5%;

[0010] 0.2-2.1% emulsifier, wherein the emulsifier includes an emulsifier with an HLB value of 13-16, an emulsifier with an HLB value of 9-11, and an emulsifier with an HLB value of 1-5; and the mass ratio of the emulsifier with an HLB value of 13-16, the emulsifier with an HLB value of 9-11, and the emulsifier with an HLB value of 1-5 is (0.2-1.5): (0.01-1.5): (0.02-0.4);

[0011] Colorant 0.01~5%;

[0012] Oil absorption powder 5~25%;

[0013] Preservatives 0.1~2%;

[0014] The balance is water.

[0015] Furthermore, the following components are included in percentage by mass:

[0016] Xanthan gum 0.1~0.6%;

[0017] Moisturizer 5~15%;

[0018] Emollient 0.5~5%;

[0019] Emulsifier 0.2~2%, the mass ratio of emulsifier with HLB value of 13~16, emulsifier with HLB value of 9~11, and emulsifier with HLB value of 1~5 is (0.2~1.5): (0.01~0.4): (0.02~0.4);

[0020] Colorant 0.01~5%;

[0021] Oil absorption powder 5~25%;

[0022] Preservatives 0.1~2%;

[0023] The balance is water.

[0024] Furthermore, the emulsifier includes polysorbate 80, potassium cetyl phosphate, and an emulsifier with an HLB value of 1 to 5, and the mass ratio of polysorbate 80, potassium cetyl phosphate, and the emulsifier with an HLB value of 1 to 5 is (0.2 to 1.5): (0.01 to 0.4): (0.02 to 0.4).

[0025] Furthermore, the emulsifier with an HLB value of 1 to 5 includes at least one of steareth-2, sorbitan isostearate, and sorbitan trioleate.

[0026] Furthermore, the moisturizing agent includes at least one of butylene glycol, glycerin, 1,3-propylene glycol, and 1,2-pentanediol.

[0027] Furthermore, the emollient includes at least one of caprylyl polymethicone, isododecane, cyclopentasiloxane, polydimethylsiloxane, phenyl polytrimethicone, caprylic / capric triglyceride, isononyl isononanoate, ethylhexyl palmitate, diethylhexyl carbonate, tridecyl trimellitate, pentaerythritol tetra(ethylhexanoate), glyceryl tri(ethylhexanoate), and C12-15 alcohol benzoate.

[0028] Furthermore, the colorant includes at least one of hydrophobically modified titanium dioxide, hydrophobically modified iron yellow, hydrophobically modified iron black, hydrophobically modified iron red, hydrophobically modified ultramarine blue, and hydrophobically modified chrome green.

[0029] Furthermore, the oil-absorbing powder includes at least one of polymethyl methacrylate, methyl methacrylate crosspolymer, polydimethylsiloxane / vinyl polydimethylsiloxane crosspolymer, vinyl polydimethylsiloxane / polymethylsilsesquioxane crosspolymer, HDI / trimethylol hexyllactone crosspolymer, synthetic fluorphlogopite, mica, silica, talc, boron nitride, zinc oxide, aluminum hydroxide, and kaolin.

[0030] The present invention provides a method for preparing an oil-in-water dosage form powder liquid, comprising the following steps:

[0031] Step S1, preparing a mixture:

[0032] Mix xanthan gum, a moisturizing agent, and water, and heat to 60-80° C. for swelling to obtain a first mixture;

[0033] Mixing the emollient, colorant, and emulsifier, heating to 60-80° C. and mixing evenly to obtain a second mixture;

[0034] Step S2, uniformly mixing the second mixture with the first mixture to obtain a third mixture;

[0035] Step S3: After the third mixture is cooled to 30-50° C., the oil absorbing powder and the preservative are added to the third mixture and mixed evenly to obtain an oil-in-water formulation powder liquid.

[0036] The present invention provides an application of an oil-in-water dosage form powder liquid for preparing cosmetics.

[0037] In summary, the present invention provides an oil-in-water formulation powder liquid, which is prepared using xanthan gum, a moisturizer, an emollient, an emulsifier, a colorant, an oil-absorbing powder, a preservative, and water. The interpenetrating molecular network formed by the high molecular network structure of xanthan gum and emulsifiers with different HLB values ​​is utilized to construct a powder-liquid system with multiple stabilization mechanisms. The powder liquid not only exhibits excellent anti-stratification and anti-emulsification properties under a wide temperature range, but also achieves a dynamic balance between oil control ability and long-lasting moisturizing.

[0038] Compared with the existing technology, the present invention can control oil and set makeup without causing skin dryness and has the ability to moisturize the skin, can achieve long-term oil-water balance, and at the same time improve skin feel and makeup lasting effect for a long time. DETAILED DESCRIPTION

[0039] The following will be a clear and complete description of the technical solutions of the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection requested by this application.

[0040] The sources of all raw materials in the present invention are not particularly limited and can be purchased on the market or prepared according to conventional methods known to those skilled in the art.

[0041] An embodiment of the present invention provides an oil-in-water dosage form powder, comprising the following components in percentage by mass:

[0042] Xanthan gum 0.1~0.8%;

[0043] Moisturizer 5~15%;

[0044] Emollient 0.5~5%;

[0045] 0.2-2.1% emulsifier, wherein the emulsifier includes an emulsifier with an HLB value of 13-16, an emulsifier with an HLB value of 9-11, and an emulsifier with an HLB value of 1-5; and the mass ratio of the emulsifier with an HLB value of 13-16, the emulsifier with an HLB value of 9-11, and the emulsifier with an HLB value of 1-5 is (0.2-1.5): (0.01-1.5): (0.02-0.4);

[0046] Colorant 0.01~5%;

[0047] Oil absorption powder 5~25%;

[0048] Preservatives 0.1~2%;

[0049] The balance is water.

[0050] In some preferred embodiments, the oil-in-water formulation powder comprises the following components in percentage by weight:

[0051] Xanthan gum 0.1~0.6%;

[0052] Moisturizer 5~15%;

[0053] Emollient 0.5~5%;

[0054] Emulsifier 0.2~2%, the mass ratio of emulsifier with HLB value of 13~16, emulsifier with HLB value of 9~11, and emulsifier with HLB value of 1~5 is (0.2~1.5): (0.01~0.4): (0.02~0.4);

[0055] Colorant 0.01~5%;

[0056] Oil absorption powder 5~25%;

[0057] Preservatives 0.1~2%;

[0058] The balance is water.

[0059] It's important to note that by precisely adjusting the ratio of xanthan gum to emulsifier, the viscosity of the powder can be flexibly adjusted. Low-viscosity powders (higher fluidity) are suitable for products like cushion foundations and liquid foundations that prioritize spreadability and skin adherence, while high-viscosity powders (thicker texture) are ideal for developing concealer products that require high coverage and strong adhesion.

[0060] In some preferred embodiments, the emulsifier includes polysorbate 80, potassium cetyl phosphate, and an emulsifier with an HLB value of 1 to 5, and the mass ratio of polysorbate 80, potassium cetyl phosphate, and the emulsifier with an HLB value of 1 to 5 is (0.2 to 1.5): (0.01 to 0.4): (0.02 to 0.4).

[0061] It should be noted that by selecting polysorbate 80 with an HLB value of 13 to 16 and potassium cetyl phosphate with an HLB value of 9 to 11 and compounding them with an emulsifier with an HLB value of 1 to 5, the steric hindrance enhanced by the high molecular network structure of xanthan gum and the synergistic effects of polysorbate 80, potassium cetyl phosphate and the emulsifier with an HLB value of 1 to 5 can jointly stabilize the emulsion and suspend the oil-absorbing powder through polar complementary adsorption, interfacial film synergistic reinforcement and electrostatic-steric hindrance synergistic effects, thereby constructing a powder-liquid system with multiple stabilization mechanisms and capable of suspending a large amount of oil-absorbing powder.

[0062] In some preferred embodiments, the emulsifier with an HLB value of 1 to 5 includes at least one of steareth-2, sorbitan isostearate, and sorbitan trioleate.

[0063] In some embodiments, the humectant includes at least one of butylene glycol, glycerin, 1,3-propylene glycol, and 1,2-pentanediol.

[0064] In some embodiments, the emollient includes at least one of caprylyl methicone, isododecane, cyclopentasiloxane, dimethicone, phenyl trimethicone, caprylic / capric triglyceride, isononyl isononanoate, ethylhexyl palmitate, diethylhexyl carbonate, tridecyl trimellitate, pentaerythrityl tetraethylhexanoate, triethylhexanoin, and C12-15 alcohol benzoate.

[0065] In some embodiments, the colorant includes at least one of hydrophobically modified titanium dioxide, hydrophobically modified iron yellow, hydrophobically modified iron black, hydrophobically modified iron red, hydrophobically modified ultramarine blue, and hydrophobically modified chrome green.

[0066] In some embodiments, the oil-absorbing powder includes at least one of polymethyl methacrylate, methyl methacrylate crosspolymer, polydimethylsiloxane / vinyl polydimethylsiloxane crosspolymer, vinyl polydimethylsiloxane / polymethylsilsesquioxane crosspolymer, HDI / trimethylol hexyllactone crosspolymer, synthetic fluorphlogopite, mica, silica, talc, boron nitride, zinc oxide, aluminum hydroxide, and kaolin.

[0067] It should be noted that, in some specific embodiments, the CAS numbers of the components are as follows: the CAS number of polymethyl methacrylate is 9011-14-7; the CAS number of methyl methacrylate crosspolymer is 25777-71-3; the CAS number of polydimethylsiloxane / vinyl dimethicone crosspolymer is 869736-22-1; and the CAS number of HDI / trimethylol hexyl lactone crosspolymer is 129757-76-2.

[0068] In some embodiments, the preservative includes at least one of chlorphenesin, phenoxyethanol, and caprylyl glycol.

[0069] The present invention provides a method for preparing an oil-in-water dosage form powder liquid, comprising the following steps:

[0070] Step S1, preparing a mixture:

[0071] Mix xanthan gum, a moisturizing agent, and water, and heat to 60-80° C. for swelling to obtain a first mixture;

[0072] Mixing the emollient, colorant, and emulsifier, heating to 60-80° C. and mixing evenly to obtain a second mixture;

[0073] Step S2, uniformly mixing the second mixture with the first mixture to obtain a third mixture;

[0074] Step S3: After the third mixture is cooled to 30-50° C., the oil absorbing powder and the preservative are added to the third mixture and mixed evenly to obtain an oil-in-water formulation powder liquid.

[0075] The embodiment of the present invention provides an application of an oil-in-water formulation powder liquid for preparing cosmetics.

[0076] In some specific embodiments, the composition is used to prepare liquid foundation, air cushion powder, and concealer.

[0077] The applicant further provides the following reference specific embodiments to describe the present invention. It should be noted that these embodiments are merely illustrative and do not limit the present invention in any way.

[0078] Example 1

[0079] This embodiment provides an oil-in-water formulation air cushion powder, which is prepared from an oil-in-water formulation powder liquid:

[0080] The specific components of the oil-in-water dosage form powder and their mass proportions in the powder are as follows:

[0081] Xanthan gum 0.4%; moisturizer 9%, which is butylene glycol; emollient 2%, which is caprylyl polymethicone; emulsifier 1%, specifically including polysorbate 80 0.5%, sorbitan isostearate 0.1%, and potassium cetyl phosphate 0.4%; colorant 2.08%; oil-absorbing powder 22.4%, specifically including polymethyl methacrylate 18%, polydimethylsiloxane / vinyl dimethicone crosspolymer 1%, and silica 3.4%; preservative 0.6%, specifically phenoxyethanol; the balance is water.

[0082] The oil-in-water formulation air cushion powder is prepared using an oil-in-water formulation powder liquid. The specific preparation steps are as follows:

[0083] Step S1, preparing a mixture:

[0084] xanthan gum, a moisturizing agent, and water were mixed, heated to 80° C., and kept warm for 30 minutes to allow swelling to obtain a first mixture;

[0085] The emollient, colorant, and emulsifier were mixed, heated to 80°C, and homogenized for 3 minutes to obtain a second mixture;

[0086] Step S2, heating the second mixture and the first mixture to 75° C. respectively, slowly adding the second mixture to the first mixture and homogenizing for 3 minutes to obtain a third mixture;

[0087] Step S3: After the third mixture is cooled to 40-50° C., the oil absorbing powder is added to the third mixture and homogenized for 3 minutes to obtain a fourth mixture;

[0088] Step S4, adding a preservative to the fourth mixture and stirring for 10 minutes to obtain an oil-in-water formulation powder;

[0089] Step S5, allowing the oil-in-water formulation powder to stand at room temperature, and then filling it into an air cushion box with a sponge to obtain an oil-in-water formulation air cushion powder.

[0090] Example 2

[0091] This embodiment provides an oil-in-water formulation air cushion compact, which differs from Example 1 in that the specific components of the oil-in-water formulation powder liquid and their mass proportions in the powder liquid are different, as follows:

[0092] Xanthan gum 0.6%; humectant 15%, specifically including 1,3-propylene glycol 12%, glycerin 3%; emollient 2%, namely cyclopentasiloxane 1.5%, tridecyl trimellitate 0.5%; emulsifier 0.28%, specifically including polysorbate 80 0.2%, sorbitan trioleate 0.06%, potassium cetyl phosphate 0.02%; colorant 2.08%; oil-absorbing powder 16%, specifically including methyl methacrylate crosspolymer 10%, synthetic fluorphlogopite 5%, HDI / trimethylol hexyllactone crosspolymer 1%; preservative 0.6%, specifically phenoxyethanol; the balance is water.

[0093] Example 3

[0094] This embodiment provides an oil-in-water formulation air cushion compact, which differs from Example 1 in that the specific components of the oil-in-water formulation powder liquid and their mass proportions in the powder liquid are different, as follows:

[0095] Xanthan gum 0.12%; humectant 6%, specifically butylene glycol; emollient 2%, including phenyl trimethicone 1.8%, caprylic / capric triglyceride 0.2%; emulsifier 2%, specifically including polysorbate 80 1.5%, potassium cetyl phosphate 0.3%, steareth-2 0.2%; colorant 2.08%; oil-absorbing powder 25%, specifically including polymethyl methacrylate 16%, kaolin 3%, silica 2.5%, vinyl dimethicone / methicone silsesquioxane crosspolymer 3.5%; preservative 0.6%, specifically phenoxyethanol; the balance is water.

[0096] Example 4

[0097] This embodiment provides an oil-in-water formulation air cushion compact, which differs from Example 1 in that the specific components of the oil-in-water formulation powder liquid and their mass proportions in the powder liquid are different, as follows:

[0098] Xanthan gum 0.2%; humectant 12%, specifically 1,2-pentanediol; emollient 2.2%, including polydimethylsiloxane 1.8%, isononyl isononanoate 0.4%; emulsifier 0.72%, specifically including polysorbate 80 0.6%, sorbitan trioleate 0.1%, potassium cetyl phosphate 0.02%; colorant 2.08%; oil-absorbing powder 20.9%, specifically including methyl methacrylate crosspolymer 12%, kaolin 3%, silica 2.5%, vinyl dimethicone / polymethicone silsesquioxane crosspolymer 3.4%; preservative 0.6%, specifically phenoxyethanol; the balance is water.

[0099] Example 5

[0100] This embodiment provides an oil-in-water air cushion powder, which differs from Example 1 in that the mass proportion of xanthan gum in the powder liquid is 0.1%, the mass proportion of polysorbate 80 in the powder liquid is 1.2%, the mass proportion of potassium cetyl phosphate in the powder liquid is 0.8%, and the balance is made up to 100% with water.

[0101] Example 6

[0102] This embodiment provides an oil-in-water air cushion powder. The difference from Example 1 is that the mass proportion of xanthan gum in the powder liquid is 0.8%, and the balance is made up to 100% with water.

[0103] Comparative Example 1

[0104] This comparative example provides an oil-in-water formulation air cushion powder, which differs from Example 1 in that an equal amount of polysorbate 60 is used to replace polysorbate 80.

[0105] Comparative Example 2

[0106] This comparative example provides an oil-in-water air cushion powder, which differs from Example 1 in that an equal amount of sodium stearoyl glutamate is used to replace potassium cetyl phosphate.

[0107] Comparative Example 3

[0108] This comparative example provides an oil-in-water formulation air cushion powder, which differs from Example 1 in that the mass proportion of polysorbate 80 in the powder liquid is 0.1%, the mass proportion of potassium cetyl phosphate in the powder liquid is 0.08%, and the balance is made up to 100% with water.

[0109] Comparative Example 4

[0110] This comparative example provides an oil-in-water air cushion powder, which differs from Example 1 in that an equal amount of sorbitan palmitate is used instead of sorbitan isostearate.

[0111] Comparative Example 5

[0112] This comparative example provides an oil-in-water air cushion powder, which differs from Example 1 in that an equal amount of sorbitan laurate is used instead of sorbitan isostearate.

[0113] Comparative Example 6

[0114] This comparative example provides an oil-in-water air cushion powder, which differs from Example 1 in that the mass proportion of sorbitan isostearate in the powder liquid is 0%, and the balance is made up to 100% with water.

[0115] Comparative Examples 7-8

[0116] Comparative Example 7 is a pressed powder purchased in the market, and Comparative Example 8 is a setting spray purchased in the market.

[0117] The performance tests of the oil-in-water liquid powder or air cushion powder prepared in the above examples and comparative examples were conducted as follows:

[0118] Test 1: Stability test

[0119] Test Method: The oil-in-water formulation powders prepared in Examples 1 to 6 and Comparative Examples 1 to 6 were subjected to stability testing. The specific test method is as follows: 1) The oil-in-water formulation powders were placed in environments of 45°C, -15°C, and 25°C, and the oil-in-water formulation powders were observed for abnormal phenomena such as bleaching, demulsification, and delamination within three months; 2) The oil-in-water formulation powders were subjected to a -15°C / 45°C hot and cold cycle for 6 times. The specific cycle method was: the oil-in-water formulation powders were stored at 45°C, 25°C, and -15°C for 24 hours each cycle, with a heating and cooling rate of 0.5°C / min during the cycle. After the cycle, the product was observed for abnormal phenomena such as bleaching, demulsification, and delamination. The above test results are shown in Table 1.

[0120] Table 1

[0121]

[0122] According to the data in Table 1, the powder-liquid systems of Comparative Examples 1 and 2 exhibited demulsification, indicating that when the polysorbate-80 and potassium cetyl phosphate in the present invention were replaced by commercially available conventional emulsifiers, the emulsion system stability and powder suspension capacity decreased significantly, confirming their irreplaceable nature in the formulation. The demulsification in Comparative Example 3 was attributed to the insufficient total emulsifier content provided by polysorbate-80, sorbitan isostearate, and potassium cetyl phosphate, resulting in incomplete coverage of the interfacial adsorption layer, increased dynamic interfacial tension, weakened electrostatic repulsion and steric hindrance between droplets, and the resulting droplet coalescence and demulsification, resulting in unstable powder-liquid properties. The bleaching and demulsification results of Comparative Examples 4 and 6 showed that the use of emulsifiers with an HLB value greater than 5 failed to form a synergistic stabilizing effect with polysorbate-80 and potassium cetyl phosphate, making it difficult to effectively reduce the surface free energy of the oil-water interface and disperse the droplets. Conversely, introducing an emulsifier with an HLB value of 1-5 into this emulsification system can further reduce interfacial energy and enhance droplet dispersibility through a compounding mechanism, thereby improving powder-liquid stability. In summary, through the scientific compounding of polysorbate 80, potassium cetyl phosphate, and an emulsifier with an HLB value of 1-5, an oil-in-water powder-liquid system with high stability and strong powder suspension ability can be constructed, achieving an optimal balance between interfacial energy regulation, droplet dispersibility, and process suitability.

[0123] Test 2: Makeup effect evaluation test

[0124] Test method: 30 healthy subjects aged 20 to 40 were selected, of which 15 subjects had oily or mixed skin, and the other 15 subjects had dry or mixed skin. The subjects were randomly divided into 6 groups, with 5 people in each group; each group used the powder liquid provided in Examples 1 to 4 or the powder or setting spray provided in Comparative Examples 7 to 8 to conduct makeup effect evaluation tests. Each subject applied an equal amount of the test sample on the left and right cheeks, and the subjects evaluated the application process and the effect after 6 hours of application and filled out a questionnaire. Finally, all the scores were counted and the average value was calculated. The skin feel test results are shown in Table 2. The specific scoring criteria are as follows:

[0125] (1) Adhesion: 0-4 points for poor adhesion and serious powder sticking and floating; 4-7 points for moderate adhesion and slight powder sticking and floating; 7-10 points for good adhesion and almost no powder sticking and floating.

[0126] (2) Makeup lasting power: 0-4 points if obvious color difference appears on the face after 3 hours; 4-7 points if obvious color difference appears on the face after 6 hours; 7-10 points if no obvious color difference appears on the face after 6 hours.

[0127] (3) Oil control: 3 hours after using liquid powder, pressed powder or setting spray, observe the oiliness of the face at a social distance. If a lot of oiliness is observed, it is 0-4 points; 6 hours after using liquid powder, pressed powder or setting spray, if a lot of oiliness is observed at a social distance, it is 4-7 points; 6 hours after using liquid powder, pressed powder or setting spray, if a lot of oiliness is observed at a social distance, it is 7-10 points;

[0128] (4) Dryness: 0 to 4 points if the skin feels severely tight and dry; 4 to 7 points if the skin feels slightly tight and dry; 7 to 10 points if the skin does not feel obviously tight and dry.

[0129] (5) Makeup setting ability: 0-4 points for severe makeup removal and mottled appearance; 4-7 points for mild makeup removal and mottled appearance; 7-10 points for no obvious makeup removal or mottled appearance;

[0130] (6) Makeup effect preference (overall evaluation of the product after use): 0 to 4 points for poor; 4 to 7 points for average; 7 to 10 points for good;

[0131] (7) Stickiness: The sticky and unrefreshing feeling on the skin surface during use is rated as severe (0-4 points); slight adhesion during use with a temporary resistance (4-7 points); and no obvious dragging feeling during use, with a relatively refreshing feeling (7-10 points).

[0132] Table 2

[0133]

[0134] According to the data in Table 2, the oil-in-water liquid powders prepared in Examples 1-4 exhibit excellent makeup-setting, oil-control, and moisturizing properties. During the testing phase, subjects experienced no signs of powder clinging or floating, and reported a comfortable feel and good skin adherence. Compared to Comparative Example 7 (a commercially available pressed powder), the liquid powders prepared in the present invention demonstrated comparable makeup-setting performance and significantly improved the problem of moisture absorption from the epidermis caused by the commercial product's high powder density, effectively alleviating post-use dryness and powdery, floating, and clinging makeup. Further comparison with Comparative Example 8 (a commercially available setting spray) revealed that the liquid powders of the present invention, while maintaining similar moisturizing properties to those of the commercial setting spray, demonstrated superior setting performance and addressed the technical bottlenecks of conventional setting sprays, which suffer from insufficient oil control and a sticky feel. These results demonstrate that the present invention, through its ingredient combination, achieves multi-dimensional improvements in setting, oil control, and moisturizing performance, offering both practicality and consumer experience.

[0135] Test 3: Oil control ability test

[0136] Testing Method: Thirty healthy subjects aged 20 to 40 years were selected. They had oily or combination skin and no history of skin diseases or allergies. The subjects were randomly divided into six groups, each consisting of five participants. In a laboratory maintained at a constant temperature and humidity (25°C, 50 ± 5%), the subjects first cleansed their faces with a facial cleanser and then sat quietly for 15 minutes. Afterward, three 2 cm × 2 cm test areas were marked on the subjects' foreheads, and the skin oil content of the test areas at that time (0 h) was recorded. The liquid powder, pressed powder, or setting spray prepared in the Examples and Comparative Examples of the present invention were then evenly applied to the marked areas. The skin oil content of the marked areas was measured at 3 and 6 h. Skin oil content was measured using a Cuotometer MPA580 skin oil test probe and a Sebumeter SM815 manufactured by CK GmbH, Germany. Three measurements were taken at each marked area, and the average value was calculated. The test results are shown in Table 3.

[0137] Table 3

[0138]

[0139] As shown in Table 3, after using the liquid powders prepared in Examples 1-4, the oil content of the skin in the test area was significantly lower at 3 and 6 hours than that in the blank control group, Comparative Example 7 (commercially available pressed powder), and Comparative Example 8 (commercially available setting spray). Only at 6 hours did the oil content of Example 2 approach that of Comparative Example 7 (commercially available pressed powder). This demonstrates that the liquid powders or cushion pressed powders provided by the present invention can achieve long-term oil control, and their oil-control effect is significantly superior to commercially available pressed powder cosmetics for setting and oil control.

[0140] Test 4: Moisturizing ability test

[0141] Testing Method: Thirty healthy subjects aged 20 to 40 years with healthy skin and no history of skin diseases or allergies were selected and divided equally into six groups. In a laboratory maintained at a constant temperature and humidity (25°C, 50 ± 5%), subjects first cleaned the inner forearm. After cleaning, they exposed their forearm to be tested and sat quietly for 30 minutes. During this period, they were not allowed to drink water or other beverages, remained relaxed, and avoided touching the test area. After the quiet sitting period, they marked a 3 cm × 3 cm area on the inner forearm and recorded the skin moisture content of the marked area (0 h). Subsequently, the powder, pressed powder, or setting spray prepared in the Examples and Comparative Examples of the present invention were evenly applied to the marked area. The skin moisture content of the marked area was measured at 3 and 6 h. Skin moisture content was measured using a Cuotometer MPA580 skin moisture measurement probe and a Corneometer CM 825 manufactured by CK GmbH, Germany. Three fixed points were measured in each marked area, and the average value was calculated. The test results are shown in Table 4.

[0142] Table 4

[0143]

[0144] As shown in Table 4, compared with the blank control group and comparative examples 7 to 8, the skin moisture content of the subjects showed a steady increasing trend within 3 hours and 6 hours after using the powder liquid prepared in Examples 1 to 4, indicating that the air cushion powder prepared by the present invention has a certain moisturizing and water-locking effect, which can keep the skin hydrated for a long time.

[0145] The above are only preferred embodiments of the present application and are not intended to limit the present invention. Although the present application has been described in detail with reference to examples, those skilled in the art can still modify the technical solutions described in the aforementioned examples or make equivalent replacements for some of the technical features therein. However, any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An oil-in-water dosage form powder, characterized in that: The following components are included in mass percentage: Xanthan gum 0.1~0.8%; Moisturizer 5~15%; Emollient 0.5~5%; 0.2-2.1% emulsifier, wherein the emulsifier includes an emulsifier with an HLB value of 13-16, an emulsifier with an HLB value of 9-11, and an emulsifier with an HLB value of 1-5; and the mass ratio of the emulsifier with an HLB value of 13-16, the emulsifier with an HLB value of 9-11, and the emulsifier with an HLB value of 1-5 is (0.2-1.5): (0.01-1.5): (0.02-0.4); Colorant 0.01~5%; Oil absorption powder 5~25%; Preservatives 0.1~2%; The balance is water.

2. The oil-in-water formulation powder according to claim 1, characterized in that: The following components are included in mass percentage: Xanthan gum 0.1~0.6%; Moisturizer 5~15%; Emollient 0.5~5%; Emulsifier 0.2~2%, the mass ratio of emulsifier with HLB value of 13~16, emulsifier with HLB value of 9~11, and emulsifier with HLB value of 1~5 is (0.2~1.5): (0.01~0.4): (0.02~0.4); Colorant 0.01~5%; Oil absorption powder 5~25%; Preservatives 0.1~2%; The balance is water.

3. The oil-in-water formulation powder according to claim 1, characterized in that: The emulsifier includes polysorbate 80, potassium cetyl phosphate, and an emulsifier with an HLB value of 1 to 5, and the mass ratio of polysorbate 80, potassium cetyl phosphate, and the emulsifier with an HLB value of 1 to 5 is (0.2 to 1.5): (0.01 to 0.4): (0.02 to 0.4).

4. The oil-in-water formulation powder according to claim 1, characterized in that: The emulsifier with an HLB value of 1 to 5 includes at least one of steareth-2, sorbitan isostearate, and sorbitan trioleate.

5. The oil-in-water formulation powder according to claim 1, characterized in that: The moisturizing agent includes at least one of butylene glycol, glycerin, 1,3-propylene glycol, and 1,2-pentanediol.

6. The oil-in-water formulation powder according to claim 1, characterized in that: The emollient includes at least one of octyl polymethicone, isododecane, cyclopentasiloxane, polydimethylsiloxane, phenyl polytrimethicone, caprylic / capric triglyceride, isononyl isononanoate, ethylhexyl palmitate, diethylhexyl carbonate, tridecyl trimellitate, pentaerythritol tetra(ethylhexanoate), glyceryl tri(ethylhexanoate), and C12-15 alcohol benzoate.

7. The oil-in-water formulation powder according to claim 1, characterized in that: The colorant includes at least one of hydrophobically modified titanium dioxide, hydrophobically modified iron yellow, hydrophobically modified iron black, hydrophobically modified iron red, hydrophobically modified ultramarine blue, and hydrophobically modified chrome green.

8. The oil-in-water formulation powder according to claim 1, characterized in that: The oil-absorbing powder includes at least one of polymethyl methacrylate, methyl methacrylate crosspolymer, polydimethylsiloxane / vinyl polydimethylsiloxane crosspolymer, vinyl polydimethylsiloxane / polymethylsilsesquioxane crosspolymer, HDI / trimethylol hexyl lactone crosspolymer, synthetic fluorphlogopite, mica, silica, talc, boron nitride, zinc oxide, aluminum hydroxide, and kaolin.

9. A method for preparing the oil-in-water dosage form powder according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step S1, preparing a mixture: Mix xanthan gum, a moisturizing agent, and water, and heat to 60-80° C. for swelling to obtain a first mixture; Mixing the emollient, colorant, and emulsifier, heating to 60-80° C. and mixing evenly to obtain a second mixture; Step S2, uniformly mixing the second mixture with the first mixture to obtain a third mixture; Step S3: After the third mixture is cooled to 30-50° C., the oil absorbing powder and the preservative are added to the third mixture and mixed evenly to obtain an oil-in-water formulation powder liquid.

10. Use of the oil-in-water formulation powder according to any one of claims 1 to 8, characterized in that: Used in the preparation of cosmetics.

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