Extremely simple composite colored fish scale composition and preparation method thereof

Abstract

The invention aims to provide the extremely simple composite colored fish scale composition which is safe, reliable and good in powder structure anti-falling performance and the preparation method of the extremely simple composite colored fish scale composition. The extremely simple composite colored fish scale composition is prepared from the following components in percentage by mass: 2 to 4 percent of magnesium stearate, 45 to 60 percent of pearlescent base material, 6 to 9 percent of C20-24 alkyl polydimethylsiloxane, 0.4 to 0.6 percent of preservative, 11 to 18 percent of ethanol and 15 to 23 percent of grease composition, wherein the pearlescent base material is calcium aluminum borosilicate; the preparation method is used for preparing the extremely simple composite colored fish scale composition. The invention is applied to the technical field of cosmetics.

Description

Technical Field

[0001] The present invention is applied to the technical field of cosmetics, and particularly relates to a minimalist composite colored fish scale composition and a preparation method thereof. Background Art

[0002] With the increasing popularity of pure beauty, minimalist makeup products that are quick and easy to make are loved by consumers. As an important tool to enhance the three-dimensional effect of makeup, products that enhance complexion are receiving more attention. However, cosmetics currently on the market generally have the problem of being easily broken due to transportation or accidental falling, and it is difficult to effectively ensure the structural stability and anti-drop performance of the powder block, which not only affects the appearance integrity of the product, but also may cause the powder to loosen. The main reasons for this problem may include insufficient powder bonding in traditional formulas, suboptimal pressing processes, and improper selection of adhesives. In addition, such products often contain mica or synthetic fluorphlogopite ingredients, which are inherently fragile and more likely to cause the powder block to break when impacted by external forces. Therefore, it seriously affects the consumer's experience in actual use.

[0003] In addition, these products have a single pearlescent effect and can only present a single sense of layering. It is difficult to show a colorful change effect. The lack of personalized design makes the makeup look dull and lacks liveliness. Users often need to use a variety of different highlight products, which not only increases the complexity of makeup, but also significantly increases the cost of makeup. Traditional products usually use talcum powder, mica and nylon-12 powder base materials as filling materials. Although these ingredients are common and low-cost, there are also some concerns. For example, mineral raw materials may contain heavy metals. If not handled properly, there will be a potential risk of excessive heavy metals, and it also does not meet the requirements of pure beauty.

[0004] When too much powder base material is used in the formula, it is easy to cause the texture to be rough or not fine enough. After application, it may appear abrupt on the skin, and even aggravate the appearance of pores and skin texture, and fail to show the transparent and natural luster that the product should have. For example, the Chinese patent with publication number CN108324582A discloses a natural high-gloss brightening powder and its production process, including the following components: mica, synthetic fluorphlogopite, magnesium myristic acid, synthetic wax, skin conditioner (including at least one of boron nitride and nylon-12), talc, triethoxycaprylylsilane, colorant, sodium calcium borosilicate, emollient, tocopherol acetate, preservative. From the perspective of formula structure, the composition of such formulas is relatively complex, and there are certain deficiencies in safety risk assessment. In September 2024, the ECHA Risk Assessment Committee (RAC) recommended that talc be classified as a Class 1B carcinogen (applicable to all contact routes) and may trigger relevant provisions in the EU Cosmetics Regulation that prohibit CMR substances. The above assessment highlights its potential risks and the urgent need to improve the safety of the formula.

[0005] If a cosmetic composition that is simple and safe in composition, has good transparency, gloss and color rendering effects, and can also overcome the problem of easy breakage of powders can be provided, the above technical problems can be well solved. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a minimalist composite colored fish scale composition with good anti-drop performance of the powder structure and its preparation method, which is safe and reliable.

[0007] The technical solution adopted by the present invention is that the minimalist composite colored fish scale composition comprises the following components: by mass percentage, magnesium stearate 2-4%, pearlescent substrate 45-60%, C20-24 alkyl polydimethylsiloxane 6-9%, preservative 0.4-0.6%, ethanol 11-18%, grease combination 15-23%; wherein, the pearlescent substrate is calcium aluminoborosilicate.

[0008] As can be seen from the above solution, through the C20-24 alkyl polydimethylsiloxane modified by multi-domain alkyl groups, in combination with the grease combination, slender and interlaced crystal structures are jointly formed after the high-temperature dissolution process, thereby forming an ester gel system, highly structuring the grease, and effectively reducing the shrinkage effect of the grease during the baking process, greatly improving the overall stability of the product. At the same time, combined with the swelling characteristics of magnesium stearate in the oil phase and ethanol in the treatment, the three-dimensional structuring effect of the composition is further enhanced, making the product show excellent stability and performance in appearance, texture and functionality. The combination of various greases in the oil phase is used to further improve the skin feel performance of the product, making it more conformable to the skin during use, presenting a natural luster without showing pores or texture, and at the same time taking into account good sweat and waterproof performance to meet the all-weather makeup requirements. The pearlescent substrate is firmly attached through the grease in the oil phase, thereby reducing the introduction of other powders, significantly reducing the heavy metal risk that natural mineral powders may bring, and comprehensively taking into account the requirements of health, safety and environmental protection and sustainability.

[0009] A preferred solution is that the minimalist composite colored fish scale composition comprises the following specific components: by mass percentage, magnesium stearate 3%, calcium aluminoborosilicate 52%, C20-24 alkyl polydimethylsiloxane 7.5%, preservative 0.5%, ethanol 17%, and the grease combination comprises diisostearyl malate 7.2%, octyldodecyl stearate 9%, isostearyl stearoyl stearate 3.5%.

[0010] A preferred solution is that the preservative is phenoxyethanol & ethylhexylglycerin.

[0011] The preparation method of the minimalist composite colored fish scale composition comprises the following steps: Step S1: Add magnesium stearate and pearlescent substrate into a stirring pot, and stir at a speed of 150 ± 10 r / min for 4 - 6 minutes to fully disperse and homogenize the powder, thus obtaining a powder phase. Step S2: Add C20 - 24 alkyl dimethicone, oil combination, and preservative into a beaker according to the formula ratio, heat with stirring to 80 ± 5 °C until the oil dissolves and is uniform without flocs, and then cool down to 25 ± 5 °C to obtain a condensed oil phase. Step S3: Add the oil phase and the powder phase together into the stirring pot, and stir at a speed of 150 ± 10 r / min for 8 - 12 minutes to fully combine the oil and the powder, thus obtaining a wet powder. Step S4: Add ethanol into the wet powder according to the formula ratio, and stir again at a speed of 150 ± 10 r / min for 8 - 12 minutes to make it evenly mixed, thus obtaining a wet powder with solvent. Step S5: Prepare a flat tray, slide the wet powder with solvent through a sieve with large pores, and evenly spread the sieved wet powder on the tray to obtain granular wet powder. Step S6: Place the tray with granular wet powder in an oven at 50 ± 1 °C and bake for 11 - 13 hours. Step S7: Take out the tray from the oven, sieve the dried granules once with a sieve with small pores, and sieve out and collect the scale - like granules with a particle size ≥ the mesh number of this sieve for standby. Step S8: Mix the scale - like granules of different colors evenly according to the color ratio designed for the product to obtain mixed colored scale - like granules. Step S9: Load the mixed scale - like granules into a mold with an aluminum tray, cover a 40 - g spunlace cloth on the surface of the mold, and use hydraulic equipment to press - mold at a pressure of 50 ± 5 kg / cm². After demolding, a colored scale - like composition is obtained.

[0012] As can be seen from the above solution, the pearlescent particles of the pearlescent substrate are firmly attached through the oil-phase grease, thereby reducing the introduction of other powders and significantly reducing the heavy metal risk that may be brought by natural mineral powders. The traditional use of magnesium stearate as a binder is no longer utilized. By deeply studying its foaming and swelling characteristics, compared with solvents such as isododecane and acetone, ethanol, due to its excellent swelling effect, rapid volatility, environmental protection characteristics, and good compatibility with the grease in the oil phase, the swelling and foaming behavior of magnesium stearate in the oil phase and ethanol effectively improves the structural stability of the composition. The use of ethanol not only ensures the uniform dispersion of the powder and avoids particle adhesion, but also fills the voids through the penetration of the grease during the volatilization process to form a uniform and dense powder film. This mechanism significantly enhances the internal stability and anti-drop performance of the particles, thereby endowing the product with extremely high anti-drop and anti-breakage capabilities, ensuring that it is not easily damaged during transportation, storage, and daily use. By utilizing the interaction between the grease and ethanol and the granulation technology, both the fish-scale-like luster and permeability are ensured, and the stability and use convenience of the particles are improved.

[0013] A preferred solution is that in step S2, the C20-24 alkyl dimethicone acts with the remaining components in the oil phase and forms an elongated and interlaced crystal structure.

[0014] A preferred solution is that in step S5, the stacking thickness of the wet powder does not exceed 5 mm, so that the wet powder can be evenly heated during the subsequent process.

[0015] A preferred solution is that in step S6, the magnesium stearate foams and swells in the oil phase and the ethanol, and the composition forms a three-dimensional structure. At the same time, the ethanol gradually volatilizes during the baking process, enabling the oil phase to penetrate and fill the voids to form a uniform and dense powder film. Description of the Drawings

[0016] Figure 1 is the finished product diagram of the minimalist composite colored fish-scale composition; Figure 2 is the structural diagram of the minimalist composite colored fish-scale composition under 1000-fold magnification; Figure 3 is the structural diagram of the minimalist composite colored fish-scale composition under 2000-fold magnification; Figure 4 is the structural diagram after the oil phase mixing in step S2 is completed; Figure 5 is the schematic diagram of the change of magnesium stearate from step S4 to step S6; Figure 6 is the comparison result diagram of glossiness; Figure 7 is the comparison diagram of the drop test results; Figure 8It is a comparison chart of long-lasting makeup duration and fitting degree; Figure 9 It is a comparison chart of color effects. Specific implementation manners

[0017] Example 1: The composition components of the minimalist composite colored fish scale composition are shown in Table 1 below.

[0018] In this embodiment, the oil combination includes diisostearyl malate, octyldodecyl stearate, and isostearyl stearoyl stearate; in addition, the oil combination can also be a combination of propylene glycol dicaprylate / dicaprate, neopentyl glycol diheptanoate, and lauryl polyglyceryl-3 polydimethylsiloxyethyl polydimethylsiloxane, or a combination of dimerized pentaerythritol tetra-hydroxystearate, phenylisopropyl polydimethylsiloxane, and trimethylolpropane triisostearate. The oil combination is used to achieve skin moisturizing, adhesion, and synergistically provide the function of brightness, and cooperate with C20-24 alkyl polydimethylsiloxane to generate an interlaced crystal structure, form an ester gel system, and improve the structuring of the composition.

[0019] In this embodiment, the preservative is phenoxyethanol & ethylhexylglycerin; in addition, the preservative can also be glyceryl caprylate, or caprylyl glycol, or a combination of octanoyl hydroxamic acid, glyceryl caprylate, and glycerin.

[0020] In this embodiment, magnesium stearate does not refer to its traditional use as a binder. Through its foaming and swelling characteristics, its swelling and foaming behavior in a specific solvent play a key role in the structural stability and function optimization of the product, improve the durability and freshness of the makeup, enhance the adhesion of the powder on the skin, improve the touch and extensibility of the product, and help the product form a light and porous structure.

[0021] As Figure 1 shown, calcium aluminoborosilicate, a pearlescent substrate, compared with traditional natural mica substrates or synthetic fluorophlogopite substrates, not only avoids the heavy metal risks that may exist in traditional mineral substrates, can show more excellent gloss and transparency, but also has higher chemical stability and optical properties, thus endowing the product with a more lasting makeup effect and multi-dimensional gloss layering. At the same time, combined with the preparation method, the composition can present a composite effect of multiple colors, thus endowing it with a richer gloss layering and multi-dimensional color visual performance. In addition, the components of the composition are preferably sustainable materials and safe components, and a minimalist formula structure design is adopted, which perfectly fits the current popular clean beauty concept and meets consumers' attention to health and environmental protection.

[0022] Octyldodecyl stearate, a multifunctional emollient ester, combines excellent powder adhesion and a smooth touch, significantly enhancing the spreadability and texture of products. It helps improve the adherence and extensibility of products, and has strong compatibility, enabling better binding with pearlescent substrates and magnesium stearate to enhance the overall makeup effect.

[0023] Diisostearyl malate has excellent extensibility and lubricity, providing a silky application experience while significantly improving the spreadability of the formulation and skin feel. Its excellent compatibility allows it to bind tightly with the remaining oils and powder components in the oil phase, effectively helping to evenly disperse pearlescent substrate particles and magnesium stearate, ensuring a fine and uniform overall texture of the product while enhancing the durability and uniformity of the makeup effect.

[0024] C20 - 24 alkyl dimethicone, transient petrolatum, has excellent lubricity, stability and a smooth touch, significantly improving the skin feel and spreadability of products. It has excellent film-forming and water resistance properties, helping to enhance the waterproof and sweatproof performance of cosmetics, thus prolonging the durability of makeup. Its good compatibility allows it to bind tightly with the remaining oils and powder components in the oil phase and can form a three-dimensional gelation when interacting with other composite oils, effectively improving the stability of the composition.

[0025] Isostearyl stearoyl stearate has excellent lubricity and moisturizing properties. It can not only improve the skin feel of pigment formulations but also give the powder product a silky and pleasant touch, while enhancing the layering and spreadability of the composition and prolonging the application experience. This ingredient also has good oil absorption capacity, which can optimize the powder dispersibility and texture stability, significantly improving the durability and adherence of the product.

[0026] The preservative includes a 9:1 ratio synergistic preservation system composed of phenoxyethanol and ethylhexylglycerin. As an efficient broad-spectrum antibacterial agent, phenoxyethanol can effectively inhibit the growth of various bacteria and yeasts, and at the same time has good formulation stability and compatibility. Ethylhexylglycerin not only has moisturizing and softening skin feel, but also can enhance the antibacterial effect of phenoxyethanol, reducing the overall amount of preservatives, thus reducing irritation to the skin.

[0027] Ethanol: mainly acts as a solvent in the minimalist composite colored fish scale composition. It has excellent permeability and can effectively penetrate into the interior of the fish scale composition powder particles. Through the high-temperature volatilization effect, after ethanol volatilizes, it promotes the collapse of the composite oil in the mixed wet powder into the powder particles, making the internal structure of the powder particles more compact. As ethanol gradually volatilizes completely, the surface oil soaks into the particle interior and forms a uniform powder film on the particle surface. Furthermore, it enables the powder particles to maintain the uniformity and integrity of the powder particles without being affected by external forces, thereby enhancing the structural stability and application performance of the product and ensuring the gloss and fineness of the product.

[0028] The preparation method of the minimalist composite color fish scale composition comprises the following steps: Step S1: Add magnesium stearate and pearlescent substrate into a stirring pot, and stir at a speed of 150 r / min for 5 minutes to fully disperse and homogenize the powder, thus obtaining a powder phase; Step S2: Add octyldodecyl stearate, diisostearyl malate, C20-24 alkyl dimethicone, isostearyl stearoyl stearate, phenoxyethanol and ethylhexylglycerin into a beaker according to the formula ratio, heat while stirring to 80±5°C until the oil dissolves and is homogeneous without flocs, and then cool down to 25±5°C to obtain a condensed oil phase; As Figure 5 shown, in this process, C20-24 alkyl dimethicone acts on other oils to form an elongated and interlaced crystal structure; Step S3: Add the oil phase and the powder phase into the stirring pot together, and stir at a speed of 150 r / min for 10 minutes to fully combine the oil and the powder, thus obtaining a wet powder; Step S4: Add ethanol into the wet powder according to the formula ratio, and stir again at a speed of 150 r / min for 10 minutes to make it homogeneous, thus obtaining a wet powder with solvent; As Figure 4 shown, in this process, magnesium stearate will be fully soaked, and combined with the mixed oil to produce a stronger structuring effect; Step S5: Prepare a flat tray, slide the wet powder with solvent through an 8-mesh sieve, and evenly spread the sieved wet powder on the tray to obtain granular wet powder; Among them, the stacking thickness of the granular wet powder does not exceed 5 mm, so that the wet powder can be heated evenly in the subsequent process; Step S6: Place the tray filled with granular wet powder in an oven at 50°C and bake for 12 hours; Step S7: Take out the tray from the oven, sieve the dried granules once with a 20-mesh sieve, and screen out and collect the fish scale granules with a particle size ≥ 20 mesh for standby; Step S8: Mix the fish scale granules of different colors evenly according to the color ratio designed for the product to obtain mixed color fish scale granules; Step S9: Load the mixed fish scale granules into a mold with an aluminum tray, cover a 40g spunlace cloth on the surface of the mold, and use hydraulic equipment to press and form at a pressure of 50 kg / cm². After demolding, a color fish scale composition is obtained; Among them, the area of the aluminum tray is within 8 cm².

[0029] In Step S4, ethanol is mixed with the wet powder, and particles of a predetermined size are formed by using a sieve with a specific pore size. At this time, the inside and surface of the particles are filled with a mixed liquid of oil and ethanol. Subsequently, a high-temperature baking technique is adopted to gradually volatilize the ethanol inside and on the surface of the particles. As Figure 2, Figure 3 As shown, during the evaporation of ethanol, the surface grease penetrates into the interior of the particles, filling the voids generated by the evaporation of ethanol and forming a unique fish-scale pattern structure on the particle surface. This process reduces the residue of grease on the particle surface, promotes the formation of a uniform powder film on the surface, thereby reducing the risk of adhesion between particles, enabling the particles to remain dispersed even without external force, and at the same time retaining the most essential luster performance of the product. In addition, as Figure 4 shown, in combination with the application of magnesium stearate in the system, through the foaming and expansion effect generated by baking, the structural stability of the particles is effectively enhanced, enabling ethanol to firmly adhere the pearlescent particles into clusters during evaporation and preventing particle collapse. This process design not only ensures the unique appearance and functionality of the particles, generating a fish-scale effect with a special structure, but also improves its use stability.

[0030] Table 1 Components and their mass percentages included in Example 1.

[0031]

[0032] Example 2: The difference from Example 1 is that the composition components of the minimalist composite color fish-scale composition are shown in Table 2 below.

[0033] Table 2 Components and their mass percentages included in Example 2.

[0034] Example 3: The difference from Example 1 is that the composition components of the minimalist composite color fish-scale composition are shown in Table 3 below.

[0035] Table 3 Components and their mass percentages included in Example 3.

[0036] Control Group 1: Table 4 Components and their mass percentages included in the traditional high-gloss powder.

[0037] Control Group 2: Table 4 Components and their mass percentages included in the traditional high-gloss powder.

[0038] As Figures 6 to 9As shown, among them, the glossiness was tested by a BYK new micro-triangle glossmeter; the maximum drop height test was the height at which the finished product could freely fall directly above the marble slab without breaking; for the long-lasting makeup time and fit, 10 volunteers tried five groups of samples within 5 days, and the data on the long-lasting makeup time and fit were obtained by observing; in terms of color performance, 10 volunteers scored the color performance form after applying the five groups of samples.

[0039] In summary, Examples 1 to 3 of the minimalist composite colored fish scale composition are significantly superior to Comparative Group 1 and Comparative Group 2 in terms of glossiness, anti-drop performance, long-lasting makeup time, fit, and color performance.

[0040] The oil phase forms a structurally stable mixed oil system through an innovative oil combination of octyldodecyl stearate, diisostearyl malate, C20-24 alkyl dimethicone, and isostearyl stearoyl stearate. It not only significantly improves the formulation stability of the composition but also effectively enhances the gloss and texture performance of the product, significantly improves the skin feel performance of the product, makes it fit the skin, shows natural gloss and has no pore or texture problems; at the same time, it has excellent sweat and waterproof performance to meet the all-day makeup requirements.

[0041] The ester gel structure of the multi-domain alkyl modified silicone and the swelling characteristics of magnesium stearate act synergistically to firmly attach the pearlescent particles of the calcium aluminoborosilicate substrate, significantly improving the structural stability and performance of the composition. At the same time, magnesium stearate plays a sealing role in the system, further enhancing the overall structural stability, enabling the product to have high-strength anti-drop performance, and significantly improving its durability and quality performance.

[0042] Ethanol is mixed with other materials, and particles of a predetermined size are formed using a sieve with a specific pore size. A high-temperature baking process is adopted to ensure that the inside and surface of the particles are filled with a mixture of oil and ethanol. During the baking process, the gradual volatilization of ethanol promotes the penetration of the surface oil into the interior of the particles, filling the voids and forming a unique fish scale pattern structure, which enhances the makeup effect performance. At the same time, the penetration of the oil effectively reduces the residue of the oil on the surface of the particles, forms a uniform powder film, reduces the risk of particle adhesion, and ensures the particle dispersibility and gloss performance.

[0043] In addition, in terms of the composition components, the formulation of the composition avoids the heavy metal risks that may exist in the finished product due to the use of multiple mineral powders in the traditional formulation, meeting the requirements of consumers for health and environmental protection.

[0044] Although the embodiments of the present invention are described in terms of actual solutions, they do not constitute a limitation on the meaning of the present invention. For those skilled in the art, modifications to its implementation solutions according to this specification and combinations with other solutions are obvious.

Claims

1. A minimalist composite colored fish scale composition, characterized in that: It includes the following components: by mass percentage, 2-4% magnesium stearate, 45-60% pearlescent base material, 6-9% C20-24 alkyl polydimethylsiloxane, 0.4-0.6% preservative, 11-18% ethanol, and 15-23% oil combination; wherein the pearlescent base material is calcium aluminum borosilicate.

2. A minimalist composite colored fish scale composition according to claim 1, characterized in that: It includes the following specific ingredients: in terms of mass percentage, 3% magnesium stearate, 52% calcium aluminum borosilicate, 7.5% C20-24 alkyl polydimethylsiloxane, 0.5% preservative, 17% ethanol, and the oil combination includes 7.2% diisostearyl malate, 9% octyldodecanol stearate, and 3.5% isostearyl stearoyl stearate.

3. The minimalist composite colored fish scale composition according to claim 1, characterized in that: The preservatives are phenoxyethanol & ethylhexylglycerin.

4. A method for preparing a minimalist composite colored fish scale composition according to any one of claims 1 to 3, characterized in that: It includes the following steps: Step S1, adding magnesium stearate and pearlescent base material into a stirring pot, stirring at a speed of 150±10 r / min for 4-6 minutes to fully disperse the powder and obtain a powder phase; Step S2, adding C20-24 alkyl polydimethylsiloxane, oil combination, and preservative into a beaker according to the formula ratio, heating to 80±5° C. while stirring until the oil is dissolved and uniform without flocs, and then cooling to 25±5° C. to obtain a condensed oil phase; Step S3, adding the oil phase and the powder phase into a stirring pot, stirring at a speed of 150±10r / min for 8-12 minutes to fully combine the oil and the powder to obtain a wet powder; Step S4, adding ethanol to the wet powder according to the formula ratio, stirring again at a speed of 150±10 r / min for 8-12 minutes to make the mixture uniform, and obtaining a wet powder with solvent; Step S5, preparing a flat tray, sliding the wet powder with the solvent through a large-aperture sieve, so that the sieved wet powder is evenly spread on the tray to obtain granular wet powder; Step S6, placing the tray containing the granular wet powder in an oven at 50±1°C and baking for 11-13 hours; Step S7, taking out the tray from the oven, sieving the dried particles once using a sieve with a small aperture, sieving out the fish scale particles with a particle size ≥ the mesh number of the sieve and collecting them for later use; Step S8, mixing fish scale particles of different colors evenly according to the color ratio of the product design to obtain mixed colored fish scale particles; Step S9, loading the mixed fish scale particles into a mold with an aluminum plate, covering the surface of the mold with a spunlace cloth, using hydraulic equipment to press and mold at a pressure of 50±5kg / cm², and obtaining a colored fish scale composition after demolding.

5. The preparation method according to claim 4, characterized in that: In step S2, the C20-24 alkyl polydimethylsiloxane reacts with the remaining components in the oil phase and forms an elongated interlaced crystal structure.

6. The preparation method according to claim 4, characterized in that: In step S5, the accumulation thickness of the wet powder does not exceed 5 mm, so that the wet powder can be heated evenly in the subsequent process.

7. The preparation method according to claim 4, characterized in that: In step S6, the magnesium stearate is foamed and expanded in the oil phase and ethanol to form a three-dimensional structure of the composition. Meanwhile, during the baking process, the ethanol gradually expands to make the oil phase penetrate and fill the gaps to form a uniform and dense powder film.

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