A multi-color eye shadow and a method of making the same

Abstract

This invention belongs to the field of color cosmetics, specifically disclosing a multi-color eyeshadow and its preparation method. The invention uses a vibrating sieve to first form single-color eyeshadow powder into spherical particles. The sieved single-color eyeshadow particles are relatively uniform in size, which facilitates subsequent pressing. After pressing, a multi-color eyeshadow with distinct colors can be formed. The preparation method of this invention not only overcomes the severe powder loss of traditional processes, but also eliminates the need for metal molds and color-separating plates during pressing. This method is suitable for small-sized aluminum tray molds, achieving a multi-color, multi-makeup effect in one tray, and solving the drawbacks of using metal molds that limit the size of molded products.

Description

Technical Field

[0001] This invention belongs to the field of color cosmetics, specifically relating to a multi-color eyeshadow and its preparation method. Background Technology

[0002] Eyeshadow is a type of makeup used to apply to the eyelids and corners of the eyes to create shadows and color contrasts. Eyeshadow comes in powder, stick, cream, lotion, pencil, and glitter forms. It comes in a wide variety of colors, including blue, cyan, green, brown, tan, auburn, and purple, with black, white, and red available for mixing.

[0003] Common eyeshadow manufacturing processes include traditional pressing, baking, and wet filling. Traditional pressing involves mechanically mixing and dispersing base filler powder, pigments, and oil-based components to obtain a powder mixture. This mixture is then filled into a metal or plastic tray and pressed using a metal mold to form the final product. This process suffers from drawbacks such as high dust levels, significant powder loss, and the tendency for rough edges to form and detach during transport due to vibration. Baking involves uniformly mixing and dispersing base filler powder, pigments, and oil-based components at room temperature. Adding appropriate water or organic solvents transforms this mixture into a non-flowing, viscous paste. This paste is then placed on a tray, pressed, and finally baked at 40°C to 60°C. The disadvantages of this method include significant material loss and the potential for an outer film to obstruct material flow due to binder seepage. The wet powder filling process involves mixing a suitable solvent with the required powder at room temperature, stirring to form a slurry, placing it in a container, and then using a pump to draw the slurry into a syringe. The slurry is then injected into the container through the injection port at the bottom of the plastic box. A pressure block seals the container, and while pressing down, a vacuum is used to remove volatile solvents. The powder box is then removed and baked in an environment between 40°C and 60°C. The disadvantage of this method is that a large amount of solvent added during production has no effect on the finished product, resulting in significant waste.

[0004] In current eyeshadow manufacturing processes, a single-color eyeshadow is typically pressed onto an aluminum pan. Pressing multiple colors onto a single aluminum pan requires a metal mold with color separators. Due to size limitations of these metal molds, large aluminum pans (40mm x 40mm) are generally needed to press multiple colors. Current eyeshadow pans with smaller metal molds (e.g., 20mm x 20mm) cannot press multiple colors onto the pan. Single-color eyeshadows can only produce one color effect, limiting consumer choice. Multi-color eyeshadow palettes can create multiple color effects, but they are larger, less portable, and more expensive. Therefore, a better technological solution is needed to produce multi-color eyeshadow products in smaller aluminum pans, reducing production costs and providing consumers with more choices.

[0005] In addition, for some people with dry skin or in particularly dry environments, the eyelids are prone to dryness and moisture loss, which can cause eye makeup to smudge and have poor staying power. Summary of the Invention

[0006] In view of the problems of the existing technology, such as the inability to press multi-color eyeshadow powder onto small-sized aluminum discs and the easy smudging of makeup, the present invention will provide a multi-color eyeshadow and its preparation method.

[0007] To achieve the above objectives, the following technical solutions are specifically included:

[0008] A multi-color eyeshadow, comprising at least two single-color eyeshadows, wherein each single-color eyeshadow comprises the following components in parts by weight: 36-51 parts inorganic filler, 7-30 parts skin feel modifier, 9-24.5 parts colorant, 10-35 parts emollient, 0.1-1 part preservative, 10-30 parts auxiliary agent, 10-30 parts solvent, and 1.4-4.3 parts moisturizer; wherein the moisturizer comprises 0.1-0.8 parts probiotics, 1.2-3 parts glycerin, and 0.1-0.5 parts Scutellaria baicalensis root extract.

[0009] In a preferred embodiment of the present invention, the probiotics include at least one of Bacillus and Lactobacillus.

[0010] In a preferred embodiment of the present invention, the probiotics are present in an amount of 0.4-0.5 parts by weight, and the Scutellaria baicalensis root extract is present in an amount of 0.3-0.4 parts by weight.

[0011] In a preferred embodiment of the present invention, the inorganic filler includes at least one of talc, mica, and tin oxide.

[0012] In a preferred embodiment of the present invention, the skin feel modifier includes silica.

[0013] In a preferred embodiment of the present invention, the colorant includes at least one of titanium dioxide (CI77891), yellow iron oxide (CI77492), red iron oxide (CI77491), black iron oxide (CI77499), yellow No. 5 (CI9140), red No. 6 (15850:2), blue No. 2 (CI77007), red No. 27 (CI45410), red No. 28 (C14-6623), and blue No. 1 (CI42090).

[0014] In a preferred embodiment of the present invention, the emollient includes at least one of nylon-12, hexagonal boron nitride, mineral oil, ethylhexyl palmitate, isononyl isononanoate, squalane, bis-diglycerol polyacryladiate-2, hydrogenated polyisobutylene, and polydimethylsiloxane.

[0015] In a preferred embodiment of the present invention, the preservative includes at least one of methylparaben, propylparaben, and ethylparaben.

[0016] In a preferred embodiment of the present invention, the additives include at least one of adhesives, anti-caking agents, film-forming agents, and thickeners.

[0017] In a preferred embodiment of the present invention, the adhesive comprises magnesium stearate.

[0018] In a preferred embodiment of the present invention, the anti-caking agent includes at least one of kaolin and magnesium myristate.

[0019] In a preferred embodiment of the present invention, the film-forming agent includes at least one of polyethylene terephthalate and polyethylene.

[0020] In a preferred embodiment of the present invention, the thickener comprises microcrystalline wax.

[0021] In a preferred embodiment of the present invention, the solvent includes at least one of anhydrous ethanol and isododecane.

[0022] This invention provides a method for preparing multi-color eyeshadow, comprising the following steps:

[0023] (1) The solvent and the powder of the single-color eyeshadow are made into particles by vibrating screen, and the single-color eyeshadow particles are obtained after sieving; the mesh number of the single-color eyeshadow particles is 10-40 mesh.

[0024] (2) Prepare single-color eyeshadow particles of different colors through step (1), mix the single-color eyeshadow particles of different colors, place them on the same mold for pressing, and obtain the multi-color eyeshadow after drying.

[0025] This invention uses a vibrating sieve to first form single-color eyeshadow powder into spherical particles. The sieved particles are relatively uniform in size, which facilitates subsequent pressing. After pressing, multi-color eyeshadows with distinct colors can be formed. This method not only overcomes the significant powder loss associated with traditional processes, but also eliminates the need for metal molds or color-separating plates during pressing. It is suitable for small-sized aluminum disc molds, achieving a multi-color, multi-makeup effect in a single palette, thus overcoming the limitations of metal molds that restrict product size.

[0026] In a preferred embodiment of the present invention, in step (1), the rotational speed of the vibrating screen is 500-5000 rpm.

[0027] As a further preferred embodiment of the present invention, in step (1), the rotational speed of the vibrating screen is 1000 rpm.

[0028] In a preferred embodiment of the present invention, in step (2), the pressing pressure is 10-60 kg and the pressing time is 1 s-10 min.

[0029] As a further preferred embodiment of the present invention, in step (2), the pressing pressure is 30-50 kg and the pressing time is 1-60 s.

[0030] In a preferred embodiment of the present invention, in step (2), the drying can be carried out by air drying at room temperature.

[0031] In a preferred embodiment of the present invention, the method for preparing the powder of the single-color eyeshadow includes the following steps:

[0032] Mineral oil, ethylhexyl palmitate, isononyl isononanoate, squalane, microcrystalline wax, bis-diglycerol polyacryladiate-2, hydrogenated polyisobutylene, and polydimethylsiloxane are mixed and stirred at 70-90℃ until they become a liquid mixture. After cooling to 35-45℃, they are mixed with the remaining components to obtain the powder for a single-color eyeshadow.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] (1) Compared with single-color eyeshadow products, the multi-color eyeshadow of the present invention allows users to apply multiple colors at once to achieve a three-dimensional and dazzling effect. The single-color part can also be used separately and applied in different colors. At the same time, because the method of the present invention does not require a metal mold color separator, a small mold can be used for pressing, resulting in a smaller multi-color eyeshadow product that is more convenient to carry.

[0035] (2) The present invention adds probiotics, glycerin and Scutellaria baicalensis root extract to the eyeshadow. The three ingredients work together to improve the moisture loss of the skin around the eyes, the function of the stratum corneum barrier, and protect the skin's immune system from ultraviolet radiation, thereby improving the problem of eye makeup being easy to smudge. Attached Figure Description

[0036] Figure 1 A picture of the multi-colored eyeshadow prepared in Example 1.

[0037] Figure 2 Actual product photo of a single-color eyeshadow. Detailed Implementation

[0038] To better illustrate the purpose, technical solution, and advantages of the present invention, the present invention will be further described below through specific embodiments.

[0039] Information on the source of raw materials used in the examples and comparative examples:

[0040] Red 6, Blue 2, Red 27, Red 28 and Blue 1: Bohuamei; 5000 mesh calcined kaolin: Guangzhou Fuzherui Company; Kingsica 5020: Guangzhou Liankai Powder Technology Co., Ltd.; Pharmaceutical magnesium stearate and nylon-12: Guangzhou Qiuyuehua Trading Co., Ltd.; Yellow 5: Guangzhou Lanfeicai Pigment Co., Ltd.; W445 microcrystalline wax: Guangzhou Nuopin Trading Co., Ltd.; Isononyl isononanoate: Guangzhou Weisheng Trading Co., Ltd.; Titanium dioxide and DC200 / 100: Guangzhou Yiming Chemical Raw Materials Co., Ltd.; Boron nitride and 10283 magnesium myristate: Haoji; Talc and mica: Henghao Technology; Mineral oil, palmitic acid Ethylhexyl ester, squalane, and polyethylene: Hongfengyuan; bis-diglycerol polyacryladiate-2: Huibaihang; tin oxide and polyethylene terephthalate: Kuncai Technology; hydrogenated polyisobutylene: Japan Oils & Fats (Hengtao); methylparaben and propylparaben: Shanghai Gaowei Industrial Co., Ltd.; CI77492, CI77491, and CI77499: Shanghai Yunuo Biotechnology Co., Ltd.; Lactobacillus fermentation lysate, trade name: LAVA-DERMABIOTICS HDB1234 GN.

[0041] Example 1

[0042] This embodiment provides a multi-color eyeshadow, the components of which are shown in Table 1, and its preparation method includes the following steps:

[0043] (1) Preparation of single-color eyeshadow:

[0044] (1-1) Accurately weigh each component in the formula and clean the production equipment at the same time;

[0045] (1-2) Add the A phase material to the mixing pot in sequence and stir evenly;

[0046] (1-3) Add the B phase material to the mixing pot in sequence and stir evenly;

[0047] (1-4) Add C (the colorant of single-color eyeshadow A) and E phase material to the mixing pot in sequence and stir evenly;

[0048] (1-5) Add the D-phase material to the mixing pot in sequence and stir evenly;

[0049] (1-6) Mix the mixture after stirring in steps (1-2) to (1-5) until homogeneous to obtain a mixed phase;

[0050] (1-7) Weigh the E phase materials into a mixing pot and heat and stir them. Heat to 80°C until they are melted into a liquid state, then cool to 40°C and set aside.

[0051] (1-8) Add the dissolved E phase from step (1-7) to the mixed phase obtained in step (1-7) and stir until homogeneous;

[0052] (1-9) Sampling, testing, and after passing the test, the material is discharged to obtain a single-color eyeshadow powder.

[0053] (2) Preparation of multi-color eyeshadow:

[0054] (2-1) Using the same method as step (1) for preparing single-color eyeshadow powder one, single-color eyeshadow powder two, three and four are prepared respectively;

[0055] (2-3) Pour anhydrous ethanol into a spray bottle, pour the single-color eyeshadow powder into a vibrating screen, start the vibrating screen, and spray ethanol through the ethanol bottle while the vibrating screen is running. The speed of the vibrating screen is 1000 rpm. After the vibrating screen works for 10 minutes, turn it off and sieve the obtained material through a 10-mesh screen. Select the round particles on the screen for later use (10 mesh) to obtain single-color eyeshadow particles.

[0056] (2-4) Prepare single-color eyeshadow particles of other colors using the method in step (2-3). Mix the four different colors of single-color eyeshadow particles evenly using a low-speed mixer. Fill the evenly mixed loose powder particles into a 20mm*20mm aluminum tray and press it under a pressure of 40Kg for 2s. Place the pressed eyeshadow powder into a constant temperature oven for baking at a temperature of 50℃ for 8 hours to obtain the multi-color eyeshadow.

[0057] Table 1. Formulas for single-color eyeshadows in Examples 1-3 (by parts)

[0058]

[0059]

[0060] Table 2

[0061]

[0062]

[0063] Comparative Example 1

[0064] Compared to Example 1, this comparative monochrome eyeshadow does not contain phase D and uses an equal amount of talc to make up the weight.

[0065] Comparative Example 2

[0066] Compared to Example 1, this comparative monochrome eyeshadow does not contain the probiotics in phase D, and the weight is made up with an equal amount of talc.

[0067] Comparative Example 3

[0068] Compared to Example 1, this comparative monochrome eyeshadow does not contain glycerin from phase D.

[0069] Comparative Example 4

[0070] Compared to Example 1, this comparative monochrome eyeshadow does not contain Scutellaria baicalensis root extract from phase D.

[0071] Comparative Example 5

[0072] Compared to Example 1, this comparative monochrome eyeshadow does not contain the probiotics and Scutellaria baicalensis root extract from phase D, and the weight is made up with an equal amount of glycerin.

[0073] Comparative Example 6

[0074] Compared with Example 1, the comparative single-color eyeshadows all contain 0.25 parts of probiotics, 1 part of glycerin and 0.05 parts of Scutellaria baicalensis root extract from phase D.

[0075] Comparative Example 7

[0076] Compared with Example 1, the monochromatic eyeshadows in this comparative example all contain 0.9 parts of probiotics, 3.4 parts of glycerin, and 0.6 parts of Scutellaria baicalensis root extract from phase D.

[0077] (1) Appearance and physicochemical properties of the multicolor eyeshadow products in the examples and comparative examples:

[0078] pH value (1:10 aqueous solution): 6.0-9.0;

[0079] Heat resistance (45±2℃): After 2 months, no abnormalities were observed after returning to room temperature;

[0080] Cold resistance (-18±2℃): After 2 months, no abnormalities were observed after returning to room temperature;

[0081] Cyclic test (45℃, room temperature, -18℃): 3 cycles, passed.

[0082] (2) Eye moisture test (upper eyelid, mid-eyeshadow area):

[0083] The moisture content of the stratum corneum of the eye area was measured using a Corneometer CM825 before use and 10 hours after use of the eyeshadow in the examples and comparisons. Higher measured values ​​indicated higher moisture content of the stratum corneum. The change in moisture content of the stratum corneum before and after use was calculated as well as the rate of change. The rate of change was calculated as follows: Rate of change (%) = [(Moisture content of the stratum corneum after using the eyeshadow - Moisture content of the stratum corneum of the face before using the eyeshadow) / Moisture content of the stratum corneum of the face before using the eyeshadow] * 100%.

[0084] Table 3

[0085]

[0086]

[0087] (3) Eyeshadow staying power:

[0088] Spreadability Test: Eyeshadow was applied to the volunteer's arm, covering an area 10mm long. It was allowed to air dry for 15 minutes, then the arm with eyeshadow applied was immersed in water for 20 minutes. After removing the arm, it was allowed to air dry for another 15 minutes (without towel drying). This process was repeated, immersing the arm with eyeshadow applied again for 20 minutes. Finally, the eyeshadow's staying power was checked under UV light. Better spreadability meant the eyeshadow remained on the applied area for a longer period after the test.

[0089] Table 4

[0090]

[0091] Durability Test: Ten participants applied makeup to the eyeshadow samples of the above examples and comparative examples on the same areas and surfaces. The test groups wore the makeup for 4 hours. Each participant rated the degree of makeup fading for each eyeshadow sample, with a score range of 1-10. The lower the score, the more obvious the makeup fading, and the higher the score, the less obvious the makeup fading. 10 points represents no makeup fading at all. The average score of the 10 participants for each sample was calculated. The higher the score, the better the durability of the eyeshadow.

[0092] Table 5

[0093] Durability / minute Example 1 9.3 Example 2 9.3 Example 3 9.4 Example 4 9.4 Comparative Example 1 6.9 Comparative Example 2 6.4 Comparative Example 3 8.4 Comparative Example 4 6.6

[0094] The multi-color eyeshadow of Example 1 is attached. Figure 1 As shown, attached Figure 2Conventional single-color eyeshadow products (using a spectral pressing process and a small 20mm*20mm mold, which cannot produce multi-color eyeshadows) are different from the multi-color eyeshadow of Example 1, which is a red, yellow, blue, and purple multi-color eyeshadow product. Compared with single-color eyeshadow products, users can apply multiple colors at once to achieve a three-dimensional and dazzling effect. They can also use the single-color part separately to apply four different colors. At the same time, because the method of this invention can use a small 20mm*20mm mold for pressing, and conventional methods do not require metal mold color separators, the resulting multi-color eyeshadow product is smaller in size and more convenient to carry.

[0095] Furthermore, the ethanol used in the particle preparation process of the vibrating screen in this invention is lighter in the product (in contrast, isododecane solvent is more greasy than ethanol), and anhydrous ethanol is more volatile and does not require baking.

[0096] As shown in Tables 3-5, this invention adds probiotics, glycerin, and Scutellaria baicalensis root extract to the eyeshadow. These three ingredients synergistically improve moisture loss in the eye area, enhance the stratum corneum barrier function, and protect the skin's immune system from UV radiation, thereby improving the problem of eye makeup easily fading. The amounts of probiotics, glycerin, and Scutellaria baicalensis root extract must be appropriate. Too little will affect the moisturizing effect, rendering it ineffective; too much, due to the high water content of the Scutellaria baicalensis root extract, will easily breed bacteria, affecting the preservative effect, and the moisturizing effect will not significantly increase, resulting in poor makeup retention and a significant increase in cost. Simultaneously, by adding probiotics, glycerin, and Scutellaria baicalensis root extract, this invention improves the moisturizing effect of the eyeshadow while also enhancing its makeup retention, resulting in an eyeshadow with good spreadability and high durability, thus improving the problem of conventional eyeshadows easily fading.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A multi-color eyeshadow, characterized in that, The multi-color eyeshadow is composed of at least two single-color eyeshadows, and the multi-color eyeshadow is formed by pressing particles of at least two different colors of the single-color eyeshadows. The single-color eyeshadow is composed of the following components in parts by weight: 36-51 parts inorganic filler, 7-30 parts skin feel modifier, 9-24.5 parts colorant, 10-35 parts emollient, 0.1-1 part preservative, 10-30 parts auxiliary agent, 10-30 parts solvent, and 1.4-4.3 parts moisturizer; the moisturizer includes 0.1-0.8 parts probiotics, 1.2-3 parts glycerin, and 0.1-0.5 parts Scutellaria baicalensis root extract; the probiotics are Lactobacillus fermentation lysate. The method for preparing the multi-color eyeshadow includes the following steps: (1) The solvent and the powder of the single-color eyeshadow are made into particles by vibrating screen, and the single-color eyeshadow particles are obtained after sieving; the mesh size of the single-color eyeshadow particles is 10-40 mesh; the solvent includes anhydrous ethanol; (2) Prepare single-color eyeshadow particles of different colors through step (1), mix the single-color eyeshadow particles of different colors, place them on the same mold for pressing, and obtain the multi-color eyeshadow after drying.

2. The multi-color eyeshadow as described in claim 1, characterized in that, The inorganic filler includes at least one of talc, mica, and tin oxide; the skin feel modifier includes silica.

3. The multi-color eyeshadow as described in claim 1, characterized in that, The colorant includes at least one of titanium dioxide, yellow iron oxide, red iron oxide, black iron oxide, yellow No. 5, red No. 6, blue No. 2, red No. 27, red No. 28, and blue No.

1.

4. The multi-color eyeshadow as described in claim 1, characterized in that, The emollient includes at least one of nylon-12, hexagonal boron nitride, mineral oil, ethylhexyl palmitate, isononyl isononanoate, squalane, bis-diglycerol polyacryladiate-2, hydrogenated polyisobutylene, and polydimethylsiloxane.

5. The multi-color eyeshadow as described in claim 1, characterized in that, The preservative includes at least one of methylparaben, propylparaben, and ethylparaben.

6. The multi-color eyeshadow as described in claim 1, characterized in that, The additives include at least one of adhesives, anti-caking agents, film-forming agents, and thickeners.

7. The multi-color eyeshadow as described in claim 6, characterized in that, The adhesive comprises magnesium stearate; the anti-caking agent comprises at least one of kaolin and magnesium myristate; the film-forming agent comprises at least one of polyethylene terephthalate and polyethylene; and the thickener comprises microcrystalline wax.

8. The method for preparing the multi-color eyeshadow according to any one of claims 1-7, characterized in that, Includes the following steps: (1) The solvent and the powder of the single-color eyeshadow are made into particles by vibrating screen, and the single-color eyeshadow particles are obtained after sieving; the mesh number of the single-color eyeshadow particles is 10-40 mesh. (2) Prepare single-color eyeshadow particles of different colors through step (1), mix the single-color eyeshadow particles of different colors, place them on the same mold for pressing, and obtain the multi-color eyeshadow after drying.

9. The method for preparing multi-color eyeshadow as described in claim 8, characterized in that, In step (1), the rotation speed of the vibrating screen is 500-5000 rpm; in step (2), the pressing pressure is 10-60 kg and the pressing time is 1 s-10 min.

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