Elastic powder block type cosmetic product and preparation method thereof

Abstract

The invention discloses an elastic powder block type cosmetic product and a preparation method thereof. The elastic powder block cosmetic product comprises a powder component, an oil phase component, a preservative and an antioxidant, the oil phase component comprises an organic silicon elastomer, an ester composition and silicone oil; wherein the organic silicon elastomer is prepared from a polydimethylsiloxane / vinyl polydimethylsiloxane cross-linked polymer; the ester composition comprises isononyl isononanoate and diisostearyl malate, and the mass ratio of isononyl isononanoate to diisostearyl malate is (2: 1)-(3: 1); the silicone oil comprises polydimethylsiloxane; the mass ratio of the organic silicon elastomer to the ester composition is (1: 11)-(1: 13.5). The elastic powder block type cosmetic product is moderate in viscosity, light and thin in texture and good in ductility, stability and makeup maintaining performance.

Description

Technical Field

[0001] This application belongs to the field of cosmetic technology, specifically relating to an elastic powder block cosmetic product and its preparation method. Background Technology

[0002] Elastic compact makeup products are cosmetics applied to the skin's surface. Compared to regular compact makeup products, elastic compact makeup products offer better color payoff and spreadability, longer-lasting makeup, and are less prone to fading. The formulation of elastic compact makeup products typically contains silicone elastomers. However, the addition of silicone elastomers significantly increases the consistency of the formulation, making the compact makeup product feel sticky and heavy, and also reduces its spreadability. Summary of the Invention

[0003] To address the aforementioned problems, this application provides an elastic powder compact cosmetic product and its preparation method. The elastic powder compact cosmetic product of this application has moderate viscosity, a light texture, and good spreadability, stability, and makeup-holding properties.

[0004] The first aspect of this application provides an elastic powder block cosmetic product, which includes a powder component, an oil phase component, a preservative, and an antioxidant;

[0005] The oil phase components include organosilicon elastomers, esterified compositions, and silicone oils;

[0006] Among them, the silicone elastomers include polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymers;

[0007] The esterified composition comprises isononyl isononanoate and diisostearyl malate, wherein the mass ratio of isononyl isononanoate to diisostearyl malate is 2:1 to 3:1.

[0008] Silicone oils include polydimethylsiloxane;

[0009] The mass ratio of the organosilicon elastomer to the esterified composition is 1:11 to 1:13.5.

[0010] Not intended to be limited by any theory or interpretation, the oil phase component of the elastic compact cosmetic product of this application includes a silicone elastomer, an esterification composition, and silicone oil. The silicone elastomer comprises a polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer with high crosslinking density and good molecular chain flexibility. The esterification composition comprises isononyl isononanoate and diisostearyl malate in a mass ratio between 2:1 and 3:1, and the mass ratio of the silicone elastomer to the esterification composition in the cosmetic product is 1:11 to 1:13.5. Therefore, isononyl isononanoate can improve the spreadability of the elastic compact cosmetic product and reduce the viscosity of the formulation system. An appropriate amount of diisostearyl malate can effectively improve the compatibility between isononyl isononanoate and the silicone elastomer, enhance the stability of the elastic eye makeup product, and give the elastic compact cosmetic product moderate viscosity and a relatively light skin feel, as well as good skin adhesion and staying power. In the elastic powder-type cosmetic products of this application, the silicone oil includes polydimethylsiloxane, which can further improve the stability of the cosmetic product formula.

[0011] Therefore, the elastic powder-type cosmetic products of this application have moderate viscosity, light texture, and good spreadability, stability, and makeup-holding properties.

[0012] In any embodiment of this application, the silicone elastomer accounts for 1.48% to 1.63% of the cosmetic product by mass, and the esterified composition accounts for 18.47% to 20.38% of the cosmetic product by mass.

[0013] In any embodiment of this application, the powder component includes silicon powder, binder, filler, and colorant.

[0014] In any embodiment of this application, the silicon powder includes spherical silicon powder without surface modification treatment, spherical silicon powder with polydimethylsiloxane surface modification treatment, and / or spherical silicon powder with triethoxyoctylsilane surface treatment.

[0015] In any embodiment of this application, the silicon powder includes spherical silicon powder that has been surface-treated with triethoxyoctylsilane.

[0016] In any embodiment of this application, the particle size of the silicon powder is 6 μm to 11 μm.

[0017] In any embodiment of this application, the particle size of the silicon powder is 6.5 μm to 8.5 μm.

[0018] In any embodiment of this application, based on a total mass of 100 parts, the cosmetic product comprises the following components:

[0019]

[0020]

[0021] In any embodiment of this application, the binder includes one or more of magnesium myristate, synthetic wax, magnesium stearate, and zinc stearate.

[0022] In any embodiment of this application, the filler includes one or more of mica, synthetic fluorophlogopite, talc, bismuth oxychloride, boron nitride, and kaolin.

[0023] In any embodiment of this application, the color powder includes one or more of titanium dioxide, iron oxide color powder, and organic color powder.

[0024] In any embodiment of this application, the preservative includes one or more of methylparaben, ethylparaben, propylparaben, butylparaben, pentylene glycol, caprylyl glycol, 1,2-hexanediol, ethylhexylglycerin, phenoxyethanol, sodium benzoate, and potassium sorbate.

[0025] In any embodiment of this application, the antioxidant includes one or more of tocopherols and their esters, vitamin C derivatives, tea polyphenols, and squalane.

[0026] The second aspect of this application provides a method for preparing an elastic powder-type cosmetic product, used to prepare the elastic powder-type cosmetic product according to any embodiment of the first aspect, the method comprising:

[0027] Provide powder components;

[0028] The silicone oil and the organosilicon elastomer are mixed evenly to obtain a first mixture, wherein the silicone oil includes polydimethylsiloxane and the organosilicon elastomer includes a polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer.

[0029] Diisostearyl malate and isononyl isononanoate are mixed evenly to obtain an esterified composition, wherein the mass ratio of isononyl isononanoate to diisostearyl malate is 2:1 to 3:1.

[0030] The mixture and the esterified composition are mixed evenly to obtain an oil phase component. In the oil phase component, the mass ratio of the organosilicon elastomer to the esterified composition is 1:11 to 1:13.5.

[0031] The oil phase component, preservative, and antioxidant are mixed evenly to obtain a second mixture.

[0032] The powder components are mixed evenly with the second mixture to obtain a cosmetic product. Attached Figure Description

[0033] Figure 1 It is an elastic powder-type cosmetic product prepared according to Example 1 of this application;

[0034] Figure 2 This is a test result diagram of the application effect of the elastic powder block cosmetic product of Embodiment 1 of this application;

[0035] Figure 3 This is a test result diagram of the application effect of the elastic powder block cosmetic product of Comparative Example 1 of this application. Detailed Implementation

[0036] To make the purpose, technical solution, and beneficial technical effects of this application clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the embodiments described in this specification are merely for explaining this application and are not intended to limit it.

[0037] For simplicity, this application only explicitly discloses some numerical ranges. However, any lower limit can be combined with any upper limit to form a range not explicitly stated; and any lower limit can be combined with other lower limits to form a range not explicitly stated, just as any upper limit can be combined with any other upper limit to form a range not explicitly stated. Furthermore, although not explicitly stated, every point or individual value between the endpoints of the range is included within that range. Therefore, each point or individual value can be used as its own lower or upper limit and combined with any other point or individual value or with other lower or upper limits to form a range not explicitly stated.

[0038] In the description of this application, it should be noted that, unless otherwise stated, "above" and "below" include the stated number, and "multiple" in "one or more" means two or more.

[0039] The foregoing description of this application is not intended to describe every disclosed implementation or method. Instead, the following description provides more specific examples of exemplary embodiments. Throughout the application, guidance is provided through a series of embodiments that can be used in various combinations. The examples listed are representative only and should not be construed as exhaustive.

[0040] As described in the background section, the formulation system of elastic powder block cosmetic products usually contains silicone elastomers. However, the addition of silicone elastomers will significantly increase the viscosity of the formulation system, making the eye makeup products feel sticky and heavy, and will also reduce the spreadability of elastic powder block cosmetic products.

[0041] In view of this, the inventor, through in-depth research and extensive experimentation, has provided an elastic powder block cosmetic product and its preparation method.

[0042] The first aspect of this application provides an elastic powder-type cosmetic product, which includes a powder component, an oil phase component, a preservative, and an antioxidant. The oil phase component includes an organosilicon elastomer, an esterified composition, and a silicone oil.

[0043] The organosilicon elastomers of this application include polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymers.

[0044] The esterified composition of this application comprises isononyl isononanoate and diisostearyl malate, wherein the mass ratio of isonononyl isononanoate to diisostearyl malate is 2:1 to 3:1. For example, the mass ratio of isonononyl isononanoate to diisostearyl malate can be 2:1, 2.2:1, 2.4:1, 2.6:1, 2.8:1, 3:1, or any range of the above values.

[0045] The silicone oil in this application includes polydimethylsiloxane.

[0046] The mass ratio of the silicone elastomer to the esterified composition in this application is 1:11 to 1:13.5. For example, the mass ratio of the silicone elastomer to the esterified composition can be 1:11, 1:11.5, 1:12, 1:12.5, 1:13, 1:13.5, or any range of the above values.

[0047] The elastic powder-based cosmetic products of this application may include any powder-based cosmetic product with an elastic texture. For example, they may include, but are not limited to: elastic eyeshadow, elastic eyebrow powder and other eye products; elastic blush, elastic contour powder and other face products; and elastic highlighter, body contour powder and other body products.

[0048] During the development of elastic powder-type cosmetic products, the inventors of this application experimented with adding isononyl isononanoate to the formula and discovered that the polymethyl branched structure of isonononanoate can break the dense structure of silicone elastomers, thereby improving the sticky and heavy feel of silicone elastomers. Specifically, the polymethyl branched structure of isonononanoate has a large spatial volume, which can insert into the intermolecular gaps of silicone elastomers, disrupting their tightly packed network structure. As a low-polarity ester oil, isonononanoate can also dissolve some of the hydrophobic groups in silicone elastomers, weakening the intermolecular forces (such as van der Waals forces) and loosening the network structure of silicone elastomers. In addition, isonononanoate has low viscosity, which can reduce the overall viscosity of the system, making the silicone elastomer particles easier to disperse and flow. Therefore, elastic powder-type cosmetic products have a light skin feel and good spreadability.

[0049] However, the addition of isononyl isononanoate can also introduce certain problems into the formulation. For example, silicone elastomers and isononyl isononanoate have poor compatibility, which can easily lead to phase separation and product instability. The addition of isononyl isononanoate can also affect the staying power of elastic powder compact cosmetics.

[0050] Further research revealed that diisostearyl malate possesses polarity and viscosity between isononyl isononanoate and silicone elastomers. Introducing diisostearyl malate into the formulation of elastic powder compact cosmetics can reduce the interfacial tension between silicone elastomers and isononyl isononanoate, improving their compatibility. Simultaneously, diisostearyl malate can also improve the staying power of elastic powder compact cosmetics. However, if the amount of diisostearyl malate added is too low, it cannot effectively improve the compatibility between isononyl isononanoate and silicone elastomers; if the amount added is too high, it reduces the effect of isononyl isononanoate in improving the sticky and heavy feel of silicone elastomers, resulting in products still having a sticky and heavy feel and prone to pilling during application.

[0051] Furthermore, the type and amount of silicone elastomers used also affect the effectiveness of isonononyl isononanoate and diisostearyl malate in the formulation of elastic powder-based cosmetic products. If the cross-linking density of the silicone elastomer is low, or the molecular chain flexibility is low, its combination with isononononoate and diisostearyl malate will affect the product's elasticity, spreadability, and skin feel. If the amount of silicone elastomer is too high, isononononoate and diisostearyl malate will be unable to effectively improve the sticky and heavy feel of silicone elastomers, resulting in the product still having a sticky and heavy feel and being prone to pilling during application; if the amount of silicone elastomer is too low, the powder-based cosmetic product will not achieve an elastic texture.

[0052] Not intended to be limited by any theory or interpretation, the oil phase component of the elastic compact cosmetic product of this application includes a silicone elastomer, an esterification composition, and silicone oil. The silicone elastomer comprises a polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer with high crosslinking density and good molecular chain flexibility. The esterification composition comprises isononyl isononanoate and diisostearyl malate in a mass ratio between 2:1 and 3:1, and the mass ratio of the silicone elastomer to the esterification composition in the cosmetic product is 1:11 to 1:13.5. Therefore, isononyl isononanoate can improve the spreadability of the elastic compact cosmetic product and reduce the viscosity of the formulation system. An appropriate amount of diisostearyl malate can effectively improve the compatibility between isononyl isononanoate and the silicone elastomer, enhance the stability of the elastic eye makeup product, and give the elastic compact cosmetic product moderate viscosity and a relatively light skin feel, as well as good skin adhesion and staying power. In the elastic powder-type cosmetic products of this application, the silicone oil includes polydimethylsiloxane, which can further improve the stability of the cosmetic product formula.

[0053] Therefore, the elastic powder compact cosmetic product of this application has moderate viscosity, a light texture, and good spreadability, stability, and staying power. In some embodiments, the elastic powder compact cosmetic product of this application can remain in place for up to 8 hours after application.

[0054] In some embodiments, the silicone elastomer may account for 1.48% to 1.63% of the cosmetic product by mass, and the esterified composition may account for 18.47% to 20.38% of the cosmetic product by mass.

[0055] When the mass percentage of silicone elastomers in cosmetic products falls within the aforementioned range, the products maintain a soft, smooth texture and good spreadability. They also effectively encapsulate powder components in the formula, improving powder adhesion and reducing the risk of powder fallout or caking during blending. When the mass percentage of esterified compositions in cosmetic products falls within the aforementioned range, elastic powder compacts achieve a lighter, more delicate feel on the skin. This further improves the adherence, spreadability, and feel of elastic powder compacts.

[0056] In some embodiments, the powder component may include silicon powder, binder, filler, and colorant.

[0057] This application does not limit the type of silicon powder, which may be selected from silicon powders known in the art that can be used in eye cosmetic products.

[0058] In some embodiments, the silicon powder may include unmodified spherical silicon powder, polydimethylsiloxane-modified spherical silicon powder, and / or triethoxyoctylsilane-modified spherical silicon powder.

[0059] In some embodiments, the silicon powder may include spherical silicon powder that has not undergone surface modification.

[0060] In some embodiments, the silicon powder may include spherical silicon powder that has been surface-treated with triethoxyoctylsilane.

[0061] Spherical silica powder treated with triethoxyoctylsilane may comprise a spherical silica powder matrix and a triethoxyoctylsilane shell coating the surface of the spherical silica powder matrix. The triethoxyoctylsilane shell is hydrophobic and not easily dissolved by isononyl isononanoate, thus allowing the silica powder to maintain high stability in the formulation system and retain its spherical, porous structure. The spherical structure of the silica powder makes elastic powder compact cosmetic products smoother and easier to apply, while the porous structure can absorb sebum and delay discoloration caused by oil oxidation. This helps improve the spreadability of elastic powder compact cosmetic products, enhances the user experience, and improves the stability of the product's appearance.

[0062] In some embodiments, the particle size of the silicon powder is 6 μm to 11 μm.

[0063] In some embodiments, the particle size of the silicon powder is 6.5 μm to 8.5 μm.

[0064] When the particle size of the silica powder is within the above range, it can have a smaller specific surface area, which reduces the absorption of oils in the formula, improves the spreadability of elastic powder block cosmetic products, and also reduces the particle friction of silica powder during application, making the product feel silky smooth and improving the comfort of use.

[0065] In some embodiments, based on a total mass of 100 parts, the cosmetic product comprises the following components:

[0066]

[0067] This application does not limit the types of binders, fillers, pigments, preservatives, and antioxidants, which can be selected from binders, fillers, pigments, preservatives, and antioxidants known in the art and applicable to eye makeup products.

[0068] In some embodiments, the binder may include one or more of magnesium myristate, synthetic wax, magnesium stearate, and zinc stearate.

[0069] In some embodiments, the filler may include one or more of mica, synthetic fluorophlogopite, talc, bismuth oxychloride, boron nitride, and kaolin.

[0070] In some embodiments, the colorant may include one or more of titanium dioxide, iron oxide colorant, and organic colorant.

[0071] In some embodiments, the preservative may include one or more of methylparaben, ethylparaben, propylparaben, butylparaben, pentylene glycol, caprylyl glycol, 1,2-hexanediol, ethylhexylglycerin, phenoxyethanol, sodium benzoate, and potassium sorbate.

[0072] In some embodiments, antioxidants include one or more of tocopherols and their esters, vitamin C derivatives, tea polyphenols, and squalane.

[0073] The second aspect of this application provides a method for preparing an elastic powder-type cosmetic product. The method may include the following steps: providing a powder component; uniformly mixing silicone oil and an organosilicon elastomer to obtain a first mixture, wherein the silicone oil comprises polydimethylsiloxane, and the organosilicon elastomer comprises a polydimethylsiloxane / vinyl polydimethylsiloxane crosspolymer; uniformly mixing diisostearyl malate and isononyl isononanoate to obtain an esterified composition, wherein the mass ratio of isononyl isononanoate to diisostearyl malate is 2:1 to 3:1; uniformly mixing the mixture and the esterified composition to obtain an oil phase component, wherein the mass ratio of organosilicon elastomer to the esterified composition in the oil phase component is 1:11 to 1:13.5; uniformly mixing the oil phase component, a preservative, and an antioxidant to obtain a second mixture; and uniformly mixing the powder component with the second mixture to obtain the cosmetic product.

[0074] In the method of this application, the powder component, silicone oil, organosilicon elastomer, esterified composition, preservative, and antioxidant may include the powder component, silicone oil, organosilicon elastomer, esterified composition, preservative, and antioxidant as described in any embodiment of the first aspect of this application. The embodiments of the powder component, silicone oil, organosilicon elastomer, esterified composition, preservative, and antioxidant have already been described above and will not be repeated here.

[0075] According to the method of this application, silicone oil and organosilicon elastomer are first mixed evenly to obtain a first mixture. Diisostearyl malate and isononyl isononanoate are then mixed evenly to obtain an esterified composition. The mixture and the esterified composition are then mixed evenly to obtain an oil phase component. Thus, premixing can reduce the risk of oil phase separation due to poor compatibility between components and improve the stability of the material.

[0076] In the preparation of elastic powder compact cosmetic products according to the method of this application, the oil phase component includes an organosilicon elastomer, an esterification composition, and silicone oil. The organosilicon elastomer comprises a polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer with high crosslinking density and good molecular chain flexibility. The esterification composition comprises isononyl isononanoate and diisostearyl malate in a mass ratio between 2:1 and 3:1, and the mass ratio of the organosilicon elastomer to the esterification composition in the cosmetic product is 1:11 to 1:13.5. Therefore, isononyl isononanoate can improve the spreadability of elastic powder compact cosmetic products and reduce the viscosity of the formulation system. An appropriate amount of diisostearyl malate can effectively improve the compatibility between isononyl isononanoate and the organosilicon elastomer, enhance the stability of elastic eye makeup products, and give the elastic powder compact cosmetic products moderate viscosity and a relatively light skin feel, as well as good skin adhesion and makeup-holding properties. In the elastic powder-type cosmetic products prepared according to the method of this application, the silicone oil includes polydimethylsiloxane, which can further improve the stability of the cosmetic product formulation.

[0077] Therefore, the elastic powder-type cosmetic products prepared according to the method of this application have moderate viscosity, light texture, and good spreadability, stability, and makeup-holding properties.

[0078] In some embodiments, a powder component is provided, which may specifically include: providing a mixture of silicon powder, binder and filler; and uniformly mixing the mixture of silicon powder, binder and filler with colorant to obtain a powder component.

[0079] Example

[0080] The following examples describe the disclosure of this invention in more detail. These examples are merely illustrative, as various modifications and variations will be apparent to those skilled in the art within the scope of this disclosure. Unless otherwise stated, all parts, percentages, and ratios reported in the following examples are based on weight, and all reagents used in the examples are commercially available or synthesized by conventional methods and can be used directly without further processing. The instruments used in the examples are also commercially available.

[0081] Example 1

[0082] The elastic powder-type cosmetic product of Example 1 was prepared according to the formulation shown in Table 1 and by the following steps:

[0083] Silicone powder, binder, filler, and colorant are uniformly dispersed to obtain a powder component for later use. Silicone oil and organosilicon elastomer are mixed uniformly to obtain a first mixture. Diisostearyl malate and isononyl isononanoate are mixed uniformly to obtain an esterified composition. The first mixture and the esterified composition are mixed uniformly to obtain an oil phase component. The oil phase component is mixed uniformly with an antioxidant and a preservative to obtain a second mixture. The powder component and the second mixture are mixed uniformly, loaded into a mold, compacted, and then demolded to obtain an elastic powder block cosmetic product.

[0084] Table 1

[0085]

[0086] Example 2

[0087] The elastic powder-type cosmetic product of Example 2 was prepared according to the formulation shown in Table 2, using the same steps as in Example 1.

[0088] Table 2

[0089]

[0090]

[0091] Example 3

[0092] The elastic powder-type cosmetic product of Example 3 was prepared according to the formulation shown in Table 3, using the same steps as in Example 1.

[0093] Table 3

[0094]

[0095] Example 4

[0096] The elastic powder-type cosmetic product of Example 4 was prepared according to the formulation shown in Table 4, using the same steps as in Example 1.

[0097] Table 4

[0098]

[0099]

[0100] Example 5

[0101] The elastic powder-type cosmetic product of Example 5 was prepared according to the formulation shown in Table 5, using the same steps as in Example 1.

[0102] Table 5

[0103]

[0104] Example 6

[0105] The elastic powder-type cosmetic product of Example 6 was prepared according to the formulation shown in Table 6, using the same steps as in Example 1.

[0106] Table 6

[0107]

[0108]

[0109] Example 7

[0110] The elastic powder-type cosmetic product of Example 7 was prepared according to the formulation shown in Table 7, using the same steps as in Example 1.

[0111] Table 7

[0112]

[0113] Example 8

[0114] The elastic powder-type cosmetic product of Example 8 was prepared according to the formulation shown in Table 8, using the same steps as in Example 1.

[0115] Table 8

[0116]

[0117] Example 9

[0118] The elastic powder-type cosmetic product of Example 9 was prepared according to the formulation shown in Table 9, using the same steps as in Example 1.

[0119] Table 9

[0120]

[0121] Example 10

[0122] The elastic powder-type cosmetic product of Example 10 was prepared according to the formulation shown in Table 10 and by the same steps as in Example 1.

[0123] Table 10

[0124]

[0125] Examples 11 to 14

[0126] Except for adjusting the particle size and / or type of silicon powder according to Table 11, the amounts of each material in the formulations of the elastic powder block cosmetic products of Examples 11 to 14 and the preparation steps of the elastic powder block cosmetic products are the same as those in Example 1.

[0127] Table 11

[0128] Serial Number silicon powder Silicon powder particle size Example 1 Spherical silicon powder surface treated with triethoxyoctylsilane 6.5μm~8.5μm Example 11 Spherical silicon powder surface treated with triethoxyoctylsilane 6μm~7.5μm Example 12 Spherical silicon powder surface treated with triethoxyoctylsilane 8μm~11μm Example 13 Polydimethylsiloxane surface-modified silica powder Same as Example 1 Example 14 Unmodified silicon powder Same as Example 1

[0129] Comparative Example 1

[0130] The elastic powder-type cosmetic product of Comparative Example 1 was prepared according to the formulation shown in Table 12, following the same steps as in Example 1. In Table 12, " / " indicates that there is no corresponding parameter.

[0131] Table 12

[0132]

[0133] Comparative Example 2

[0134] The elastic powder-type cosmetic product of Comparative Example 2 was prepared according to the formulation shown in Table 13 and by the same steps as in Example 1.

[0135] Table 13

[0136]

[0137]

[0138] Comparative Example 3

[0139] The elastic powder-type cosmetic product of Comparative Example 3 was prepared according to the formulation shown in Table 14 and by the same steps as in Example 1.

[0140] Table 14

[0141]

[0142] Comparative Example 4

[0143] Following the formulation shown in Table 1, the polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer was replaced with an equal mass of polydimethylsiloxane crosslinked polymer, and the elastic powder block cosmetic product of Comparative Example 4 was prepared by the same steps as in Example 1.

[0144] Comparative Example 5

[0145] Following the formulation shown in Table 1, the polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer was replaced with an equal mass of polydimethylsiloxane / phenylvinyl polydimethylsiloxane crosslinked polymer, and the elastic powder block cosmetic product of Comparative Example 5 was prepared by the same steps as in Example 1.

[0146] Comparative Example 6

[0147] The elastic powder-type cosmetic product of Comparative Example 6 was prepared according to the formulation shown in Table 15 and by the same steps as in Example 1.

[0148] Table 15

[0149]

[0150] Comparative Example 7

[0151] The elastic powder-type cosmetic product of Comparative Example 7 was prepared according to the formulation shown in Table 16 and by the same steps as in Example 1.

[0152] Table 16

[0153]

[0154]

[0155] Comparative Example 8

[0156] The elastic powder-type cosmetic product of Comparative Example 8 was prepared according to the formula shown in Table 1 by the following steps:

[0157] Silicone powder, binder, filler and colorant are uniformly dispersed to obtain powder component for later use; silicone oil, organosilicon elastomer, diisostearyl malate and isononyl isononanoate are uniformly mixed to obtain oil phase component; oil phase component is uniformly mixed with antioxidant and preservative to obtain second mixture; powder component and second mixture are uniformly mixed, loaded into mold and compacted, and then demolded to obtain elastic powder block cosmetic product.

[0158] Test section

[0159] 1. Viscosity test

[0160] The prepared oil phase components (25℃) were tested using a viscometer. Each sample was tested three times, and the average value of the test results was taken as the viscosity test result of that sample.

[0161] 2. Skin feel test

[0162] (1) Skin feel score after makeup application

[0163] Using a public opinion survey method, 30 female volunteers aged 20 to 40 were selected. Each volunteer applied makeup to try the elastic powder-type cosmetic products of each example and comparative example, and rated their skin feel (whether it was sticky or heavy). 5 points was non-sticky or heavy, 4 points was slightly sticky or heavy, 3 points was average, 2 points was poor, and 1 point was very poor. The average of the 30 ratings for each example or comparative example was calculated as the skin feel score.

[0164] (2) Makeup holding effect rating

[0165] Using a public opinion survey method, 30 female volunteers aged 20 to 40 were selected. Each volunteer applied makeup to try out the various examples and comparative examples, and rated the makeup lasting effect (makeup fading) at 4 hours and 8 hours. A score of 5 indicates no makeup fading, 4 indicates slight fading, 3 indicates moderate, 2 indicates makeup fading, and 1 indicates severe fading. The average of the 30 scores for each example or comparative example at 4 hours was calculated as the 4-hour makeup lasting effect score. The average of the 30 scores for each example or comparative example at 8 hours was calculated as the 8-hour makeup lasting effect score.

[0166] 3. Formulation stability test

[0167] (1) High temperature test: After the elastic powder block cosmetic product is prepared, it is placed in a constant temperature chamber at 45℃ for 30 days to observe whether there is oil separation, collapse of the cream or color migration. If there is no such phenomenon, the test result is qualified.

[0168] (2) Low temperature test: After the elastic powder block cosmetic product is prepared, it is frozen at -5℃ to -10℃ for 7 days. Observe whether there is freezing, cracking of the cream or generation of bubbles. If there is no such phenomenon, the test result is qualified.

[0169] (3) Hot and cold cycle test: After the elastic powder block cosmetic product is prepared, it is placed at -10℃ for 24 hours, and then placed at 45℃ for 24 hours. This is one round of hot and cold cycle. Three rounds of hot and cold cycle are performed to observe whether phase separation or texture change occurs. If there is no such phenomenon, the test result is qualified.

[0170] 4. Extensibility Test

[0171] Using a public opinion survey method, 30 female volunteers aged 20 to 40 were selected. Each volunteer applied makeup to try the elastic powder-type cosmetic products of each embodiment and comparative example, and rated their spreadability. A score of 5 was excellent, 4 was good, 3 was average, 2 was poor, and 1 was very poor. The average of the 30 ratings for each embodiment or comparative example was calculated as the spreadability score.

[0172] 5. Particle friction test

[0173] Using a public opinion survey method, 30 female volunteers aged 20 to 40 were selected. Each volunteer applied makeup to try the elastic powder-type cosmetic products of each embodiment and comparative example, and rated whether they had a grainy or abrasive feel. A score of 5 indicated no grainy or abrasive feel, 4 indicated slight grainy or abrasive feel, 3 indicated average, 2 indicated poor, and 1 indicated very poor. The average of the 30 ratings for each embodiment or comparative example was calculated as the grainy or abrasive feel score.

[0174] The test results for each embodiment and comparative example are shown in Table 17.

[0175] Table 17

[0176]

[0177] In addition, observation of the cosmetic products in each embodiment and comparative example revealed that the texture of the cosmetic products in comparative examples 4, 5, and 6 could not meet the requirements for the elastic texture of elastic powder-type cosmetic products.

[0178] As shown in Table 17, the test results of Examples 1-14, which use the elastic powder block cosmetic product formulations provided in this application, demonstrate that the esterified composition can reduce the viscosity of the silicone elastomer while exhibiting good compatibility with it. Therefore, the resulting elastic powder block cosmetic products possess an elastic texture, good skin feel, good makeup retention, excellent formulation stability, good spreadability, and low particle friction after application.

[0179] Examples 1-5 show that by further adjusting the mass ratio of isononyl isononanoate and diisostearyl malate in the esterified composition, and / or the mass ratio of silicone elastomer to the esterified composition, the performance of elastic powder-type cosmetic products can be further adjusted, balancing their various properties such as skin feel, good formulation stability, spreadability, and particle friction after application.

[0180] As can be seen from Examples 1 and 11-14, by further adjusting the particle size and / or type of silicon powder, the spreadability and particle friction of elastic powder block cosmetic products can be further adjusted.

[0181] In contrast, Comparative Example 1 omitted diisostearyl malate in the cosmetic product formulation of Example 1, replacing the esterifying composition with a single ingredient, isononyl isononanoate. Therefore, the compatibility between isononyl isononanoate and the silicone elastomer in Comparative Example 1 was poor, and compared to Example 1, the makeup-holding power, formulation stability, spreadability, and post-application abrasiveness of the cosmetic product were significantly reduced. Figure 2 and 3 It can be seen that the spreadability of the cosmetic product in Comparative Example 1 is significantly worse than that in Example 1, and there are obvious flakes after application.

[0182] The amount of diisostearyl malate in the esterified composition of Comparative Example 2 was too high. Therefore, the viscosity of the oil phase component in Comparative Example 2 was higher, and compared with Example 1, the skin feel, spreadability, and particle friction of the cosmetic product after application were all worse.

[0183] The amount of diisostearyl malate in the esterified composition of Comparative Example 3 was too low. Therefore, the compatibility between the esterified composition in Comparative Example 3 and the silicone elastomer was poor, and compared with Example 1, the makeup product had poorer makeup retention, formulation stability, spreadability, and the abrasive feel of the particles after application.

[0184] In the cosmetic product formulation of Comparative Example 4, the silicone elastomer in Example 1 was replaced with a polydimethylsiloxane crosslinked polymer. Compared with the polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer, the polydimethylsiloxane crosslinked polymer has a lower crosslinking density, resulting in a relatively rigid film with weaker elasticity and extensibility. The cosmetic product is difficult to present a good elastic texture. Although it can provide basic film formation and skin feel improvement, its performance in terms of makeup holding power, formulation stability, extensibility, and the abrasive feel after application is inferior to that of Example 1.

[0185] In the cosmetic product formulation of Comparative Example 5, the silicone elastomer in Example 1 was replaced with a polydimethylsiloxane / phenyl vinyl polydimethylsiloxane crosslinked polymer. Compared to the polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer, the polydimethylsiloxane / phenyl vinyl polydimethylsiloxane crosslinked polymer introduces rigid phenyl groups into its molecular chain, restricting molecular chain movement, resulting in a higher elastic modulus, weaker extensibility, and greater susceptibility to irreversible deformation under external forces. Consequently, the cosmetic product exhibits a less desirable elastic texture. Furthermore, while the cosmetic product formulation using the polydimethylsiloxane / phenyl vinyl polydimethylsiloxane crosslinked polymer exhibits better stability at high temperatures, its stability under low temperatures and alternating hot and cold cycles is far inferior to that of Example 1. The cosmetic product using this polymer also performs worse than that of Example 1 in terms of makeup hold, spreadability, and the textured feel after application.

[0186] In the cosmetic product formulation of Comparative Example 6, the amount of silicone elastomer was too low, and the cosmetic product could not present an elastic texture. Its performance in terms of makeup retention, formulation stability, spreadability, and the texture of particles after application was also inferior to that of Example 1.

[0187] In the cosmetic product formulation of Comparative Example 7, the amount of silicone elastomer was too high and the viscosity of the oil phase component was high. As a result, the cosmetic product not only had the problem of feeling sticky and heavy on the skin and being prone to pilling when applied, but its performance in terms of makeup holding power, formulation stability, spreadability and the feeling of particle friction after application was also inferior to that of Example 1.

[0188] The cosmetic product formulation of Comparative Example 8 is the same as that of Example 1, but Comparative Example 8 directly mixes the various materials of the oil phase component, thereby increasing the risk of oil phase separation due to poor compatibility between components. As a result, the cosmetic product has poor makeup staying power, and the formulation stability cannot meet production requirements.

[0189] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims. For example, technical solutions following the inventive concept of this application should not be excluded from the scope of protection of this application.

Claims

1. A type of elastic powder-based cosmetic product, characterized in that, The cosmetic product includes powder components, oil phase components, preservatives, and antioxidants; The oil phase component includes an organosilicon elastomer, an esterification composition, and a silicone oil; The organosilicon elastomer includes a polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer; The esterified composition comprises isononyl isononanoate and diisostearyl malate, wherein the mass ratio of isononyl isononanoate to diisostearyl malate is 2:1 to 3:

1. The silicone oil includes polydimethylsiloxane; The mass ratio of the organosilicon elastomer to the esterified composition is 1:11 to 1:13.

5.

2. The cosmetic product according to claim 1, characterized in that, The silicone elastomer accounts for 1.48% to 1.63% of the mass of the cosmetic product, and the esterified composition accounts for 18.47% to 20.38% of the mass of the cosmetic product.

3. The cosmetic product according to claim 1, characterized in that, The powder components include silicon powder, binder, filler, and colorant.

4. The cosmetic product according to claim 3, characterized in that, The silicon powder includes one or more of the following: unmodified spherical silicon powder, polydimethylsiloxane-modified spherical silicon powder, and / or triethoxyoctylsilane-modified spherical silicon powder.

5. The cosmetic product according to claim 3, characterized in that, The silicon powder includes spherical silicon powder that has been surface-treated with triethoxyoctylsilane.

6. The cosmetic product according to claim 3, characterized in that, The particle size of the silicon powder is 6μm to 11μm.

7. The cosmetic product according to claim 3, characterized in that, The silicon powder has a particle size of 6.5 μm to 8.5 μm.

8. The cosmetic product according to any one of claims 3-7, characterized in that, Based on a total mass of 100 parts, the cosmetic product comprises the following components:

9. The cosmetic product according to claim 8, characterized in that, The binder comprises one or more of magnesium myristate, synthetic wax, magnesium stearate, and zinc stearate; and / or, The filler includes one or more of mica, synthetic fluorophlogopite, talc, bismuth oxychloride, boron nitride, and kaolin; and / or, The color powder includes one or more of titanium dioxide, iron oxide color powder, and organic color powder; and / or, The preservatives include one or more of the following: methylparaben, ethylparaben, propylparaben, butylparaben, pentylene glycol, caprylyl glycol, 1,2-hexanediol, ethylhexylglycerin, phenoxyethanol, sodium benzoate, and potassium sorbate; and / or, The antioxidants include one or more of tocopherols and their esters, vitamin C derivatives, tea polyphenols, and squalane.

10. A method for preparing an elastic powder block product, used to prepare an elastic powder block cosmetic product as described in any one of claims 1-8, characterized in that, The method includes: Provide powder components; Silicone oil and organosilicon elastomer are mixed evenly to obtain a first mixture, wherein the silicone oil comprises polydimethylsiloxane and the organosilicon elastomer comprises a polydimethylsiloxane / vinyl polydimethylsiloxane crosslinked polymer; Diisostearyl malate and isononyl isononanoate are mixed evenly to obtain an esterified composition, wherein the mass ratio of isononyl isononanoate to diisostearyl malate is 2:1 to 3:

1. The mixture and the esterified composition are mixed evenly to obtain an oil phase component, wherein the mass ratio of the organosilicon elastomer to the esterified composition in the oil phase component is 1:11 to 1:13.

5. The oil phase component, preservative, and antioxidant are mixed evenly to obtain a second mixture; The powder component is mixed evenly with the second mixture to obtain a cosmetic product.

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