Lipstick and preparation method thereof

By using castor seed oil, salted wood fruit oil and wing fruit oil with suitable ratio in lipsticks, and using ultrasonic-microwave compound field collaborative treatment technology, the toxicity and 'sweat' problems of traditional natural lipsticks are solved, and the problem of toxicity and 'sweat' is achieved. High temperature stability and deep moisturizing effect provide consumers with a safe and lasting user experience.

CN119185109APending Publication Date: 2024-12-27GUANGZHOU OUBO COSMETICS LAB
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Patent Information

Application Number
CN202411293322.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-14
Publication Date
2024-12-27

AI Technical Summary

Technical Problem

Chemical pigments and mineral pigments widely used in traditional lipsticks are toxic and irritating, and the surface of pure natural plant lipsticks is prone to ‘sweating’, which reduces the user experience.

Method used

Castor seed oil, salted wool and winged fruit oil with suitable ratios are used as raw materials for vegetable oils, and are treated in a coordinated manner through ultrasonic-microwave compound, combining natural wax and natural pigments to prepare a pure natural plant lipstick. Ensures safety and stability.

Benefits of technology

The lipstick has stable performance in high temperature environments, deeply moisturizing the lips, reducing roughness, improving the stability and permeability of natural vegetable oils, avoiding the phenomenon of "sweating", and bringing consumers a lasting and comfortable user experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a lipstick and a preparation method thereof, and relates to the technical field of lipsticks, the lipstick comprises the following components by weight: 50-70 parts of a vegetable fat component, 10-20 parts of a natural wax-based component, 8-17 parts of a natural pigment component, and 1-5 parts of vitamin E; wherein the vegetable fat component is obtained by compounding castor seed oil, rhus chinensis fruit oil and samara oil in a weight ratio of (4-7): (8-13): (0.2-0.5). The invention provides the pure natural plant lipstick, the raw material source is green and natural, and no chemical component such as petroleum derivatives is added, so that the use safety is ensured, and the lipstick has excellent affinity with skin and can effectively moisten lips. Besides, the lipstick is stable in performance in a high-temperature environment, the problem that a traditional natural lipstick is extremely prone to sweating is effectively solved, and more durable and comfortable use experience is brought to consumers.
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Description

Technical Field

[0001] The invention relates to the technical field of lipstick, and in particular to a lipstick and a preparation method thereof. Background Art

[0002] As an important product in the cosmetics field, lipstick's main function is to increase the color of the lips or change the color of the lips, thereby improving the overall makeup effect. With the increasing awareness of consumers on health and environmental protection, the demand for natural, safe and non-irritating cosmetics is increasing. The chemical pigments and mineral pigments widely used in traditional lipsticks have certain toxicity and irritation, and long-term use may have adverse effects on lip health. Therefore, the development of a pure natural plant lipstick not only conforms to the health concept of modern consumers, but is also an important trend in the development of the cosmetics industry.

[0003] At present, although there are some lipstick products claiming to be "natural" or "plant-based" on the market, these products often only partially use natural ingredients and still contain a certain amount of chemical additives. They are not completely based on pure natural plant ingredients. At the same time, the surface of pure natural plant lipstick is very prone to water droplets (commonly known as "sweating"), which greatly reduces the consumer experience. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a lipstick and a preparation method thereof.

[0005] In a first aspect, the present invention provides a lipstick, which comprises the following components in percentage by weight:

[0006] 50-70 parts of vegetable oil components, 10-20 parts of natural wax-based components, 8-17 parts of natural pigment components and 1-5 parts of vitamin E;

[0007] The plant oil component is obtained by compounding castor seed oil, Rhus chinensis oil and wing nut oil in a weight ratio of (4-7):(8-13):(0.2-0.5).

[0008] Furthermore, the lipstick comprises the following components in percentage by weight:

[0009] 62 parts of vegetable oil components, 16 parts of natural wax-based components, 12 parts of natural pigment components and 2 parts of vitamin E.

[0010] Furthermore, the weight ratio of the castor seed oil, the Rhus chinensis oil and the samaras nut oil is 5:11:0.3.

[0011] Further, the natural wax-based component includes at least one of beeswax and candelilla wax.

[0012] Furthermore, the natural wax-based component is composed of beeswax and candelilla wax in a weight ratio of (1-2):(5-9).

[0013] Furthermore, the natural pigment component includes at least one of radish root extract and sweet potato root extract.

[0014] In a second aspect, the present invention provides a method for preparing the lipstick according to any one of the first aspects, the preparation method comprising the following steps:

[0015] Stirring and mixing castor seed oil, Rhus chinensis oil and wing nut oil, and then subjecting them to ultrasonic-microwave composite field synergistic treatment to obtain the vegetable oil component;

[0016] The natural wax-based component is subjected to a first heating and stirring step to obtain a first material;

[0017] Adding the vegetable oil component to the first material and performing a second heating and stirring to obtain a second material;

[0018] The remaining components are added to the second material for a third heating and stirring, and then injected into a mold for cooling and shaping to obtain the lipstick.

[0019] Furthermore, the working condition parameters of the ultrasonic-microwave composite field synergistic treatment include: microwave power of 300-400W, ultrasonic power of 150-240W, and treatment time of 3-7 minutes.

[0020] Furthermore, the working condition parameters of the first heating and stirring include: temperature of 82-90°C, time of 5-15 minutes, and stirring speed of 100-200rpm; the working condition parameters of the first heating and stirring include: temperature of 70-75°C, time of 5-15 minutes, and stirring speed of 200-300rpm; the working condition parameters of the third heating and stirring include: temperature of 50-65°C, time of 5-15 minutes, and stirring speed of 200-300rpm.

[0021] Furthermore, the mold temperature is 30-40°C.

[0022] The above technical solution provided by the embodiment of the present invention has at least the following advantages compared with the prior art:

[0023] The embodiment of the present invention provides a lipstick and a preparation method thereof. The present invention provides a pure natural plant lipstick, the raw materials are green and natural, and no chemical components such as petroleum derivatives are added, thereby ensuring the safety of use, and having excellent affinity with the skin, and can effectively moisturize the lips. In addition, this lipstick has stable performance in a high temperature environment, effectively solving the problem that traditional natural lipsticks are very easy to "sweat", and bringing consumers a more lasting and comfortable use experience. Specifically:

[0024] 1) The present invention uses castor seed oil, Rhus chinensis oil and wing nut oil in suitable proportions as natural plant oil raw materials, which can not only deeply moisturize lips, reduce lip roughness, and make lips lubricated and shiny; but also ensure the balanced distribution of natural plant oil components, improve the overall stability and permeability of natural plant oil, so that the lipstick can be quickly absorbed by the lip skin when applied, forming a protective film, effectively locking moisture and preventing the lips from drying out.

[0025] 2) Based on castor seed oil, Rhus chinensis oil and wing nut oil in suitable proportions as natural plant oil raw materials, the present invention further uses an ultrasonic-microwave composite field synergistic treatment method to combine the cavitation effect of ultrasound and the heating effect of microwaves to refine the oil molecules and improve the interfacial surface properties of the oil, further improve the compatibility and dispersibility of the natural plant oil components with other components of the lipstick formula such as natural pigments, thereby improving the stability of the overall lipstick formula and effectively solving the problem that traditional natural lipsticks are prone to "sweating" at high temperatures. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Unless otherwise specified, various raw materials, reagents, instruments and equipment used in the present invention can be purchased from the market or prepared by existing methods.

[0028] In a first aspect, the present invention provides a lipstick, which comprises the following components in percentage by weight:

[0029] 50-70 parts of vegetable oil components, 10-20 parts of natural wax-based components, 8-17 parts of natural pigment components and 1-5 parts of vitamin E;

[0030] The plant oil component is obtained by compounding castor seed oil, Rhus chinensis oil and wing nut oil in a weight ratio of (4-7):(8-13):(0.2-0.5).

[0031] The embodiment of the present invention provides a lipstick. The present invention provides a pure natural plant lipstick, the raw materials are green and natural, and no chemical components such as petroleum derivatives are added, thereby ensuring the safety of use, and having excellent affinity with the skin, and can effectively moisturize the lips. In addition, this lipstick has stable performance in a high temperature environment, effectively solving the problem that traditional natural lipsticks are very easy to "sweat", and bringing consumers a more lasting and comfortable use experience. Specifically:

[0032] The present invention uses castor seed oil, Rhus chinensis oil and wing nut oil in suitable proportions as natural plant oil raw materials, which can not only deeply moisturize lips, reduce lip roughness, and make lips lubricated and shiny, but also ensure the balanced distribution of natural plant oil components, improve the overall stability and permeability of natural plant oil, so that the lipstick can be quickly absorbed by the lip skin when applied, forming a protective film, effectively locking in moisture and preventing the lips from drying out.

[0033] In some specific embodiments, the lipstick comprises the following components by weight percentage:

[0034] 62 parts of vegetable oil components, 16 parts of natural wax-based components, 12 parts of natural pigment components and 2 parts of vitamin E.

[0035] In some specific embodiments, the weight ratio of the castor seed oil, the Rhus chinensis oil and the samaras nut oil is 5:11:0.3.

[0036] In some specific embodiments, the natural wax-based component includes at least one of beeswax and candelilla wax.

[0037] In some specific embodiments, the natural wax-based component is composed of beeswax and candelilla wax in a weight ratio of (1-2):(5-9).

[0038] In some specific embodiments, the natural pigment component includes at least one of radish root extract and sweet potato root extract.

[0039] In a second aspect, based on the same inventive concept, the present invention provides a method for preparing the lipstick according to any one of the first aspects, the preparation method comprising the following steps:

[0040] Stirring and mixing castor seed oil, Rhus chinensis oil and wing nut oil, and then subjecting them to ultrasonic-microwave composite field synergistic treatment to obtain the vegetable oil component;

[0041] The natural wax-based component is subjected to a first heating and stirring step to obtain a first material;

[0042] Adding the vegetable oil component to the first material and performing a second heating and stirring to obtain a second material;

[0043] The remaining components are added to the second material for a third heating and stirring, and then injected into a mold for cooling and shaping to obtain the lipstick.

[0044] Based on castor seed oil, Rhus chinensis fruit oil and wing nut oil in suitable proportions as natural plant oil raw materials, the present invention further uses an ultrasonic-microwave composite field synergistic treatment method to combine the cavitation effect of ultrasound and the heating effect of microwaves to refine oil molecules and improve the interface surface properties of oils, further improve the compatibility and dispersibility of natural plant oil components with other components of lipstick formulas such as natural pigments, thereby improving the stability of the overall lipstick formula and effectively solving the problem that traditional natural lipsticks are prone to "sweating" at high temperatures. At the same time, the preparation method is based on the lipstick described in any one of the first aspects, so it has at least the beneficial effects of the lipstick described in any one of the first aspects, which will not be repeated here.

[0045] In some specific embodiments, the working condition parameters of the ultrasound-microwave composite field synergistic treatment include: microwave power of 300-400W, ultrasound power of 150-240W, and treatment time of 3-7 minutes.

[0046] The ultrasonic-microwave composite field synergistic treatment of the present invention can directly adopt existing equipment such as ultrasonic-microwave synergistic reactor, or build an ultrasonic-microwave composite field according to corresponding working condition parameters.

[0047] In some specific embodiments, the working condition parameters of the first heating and stirring include: temperature of 82-90°C, time of 5-15 minutes, and stirring speed of 100-200 rpm; the working condition parameters of the first heating and stirring include: temperature of 70-75°C, time of 5-15 minutes, and stirring speed of 200-300 rpm; the working condition parameters of the third heating and stirring include: temperature of 50-65°C, time of 5-15 minutes, and stirring speed of 200-300 rpm.

[0048] In some specific embodiments, the mold temperature is 30-40°C.

[0049] It should be noted that the components and raw materials involved in the lipstick and the preparation method thereof provided in the embodiments of the present invention, unless otherwise specified or specifically described, can be directly commercially available products or homemade using existing public preparation methods; for example, castor seed oil CAS registration number is 8001-79-4, food grade, such as the product model of Japan Ito Co., Ltd.: H-35 refined castor oil, the product model of Guangzhou Chubu Chemical Co., Ltd.: refined castor oil DCO (special for cosmetic lipstick), etc.; Rhus chinensis fruit oil can be directly used, such as Lanzhou Waterless Biotechnology Co., Ltd. Ltd.'s commercially available products, food grade; samaras oil can be directly used, such as the commercially available products of Shaanxi Dennis Biotechnology Co., Ltd., food grade; beeswax CAS registration number is 8006-40-4, and can be directly used, such as the commercially available products of Guangdong Southern BASF Wax Co., Ltd.; the CAS registration number of candelilla wax is 35871-55-7, and can be directly used, such as the commercially available products of Guangzhou Zhiyan Chemical Co., Ltd.; the CAS registration number of radish root extract is 84775-94-0, and can be directly used, such as the product with the trade name CANDAELILLAWAX NF#419P; the CAS registration number of sweet potato root extract is 223749-11-9; at the same time, the steps and parameters involved, if there are no special limitations or specific instructions, can be carried out according to the existing natural plant lipstick processing technology such as patent application number 201910724850.9 or directly using existing equipment, and the present invention document will not repeat them one by one.

[0050] The present invention will be further described below in conjunction with specific examples. It should be understood that these examples are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. The experimental methods in the following examples that do not specify specific conditions are usually measured according to national standards. If there is no corresponding national standard, then the conditions recommended by the manufacturer are followed.

[0051] Example 1

[0052] This example provides a lipstick, which comprises the following components in percentage by weight:

[0053] 62 parts of vegetable oil components, 16 parts of natural wax-based components, 12 parts of natural pigment components and 2 parts of vitamin E;

[0054] The plant oil component is obtained by compounding castor seed oil, Rhus chinensis oil and samarassima oil in a weight ratio of 5:11:0.3;

[0055] The natural wax-based component is composed of beeswax and candelilla wax in a weight ratio of 1:7;

[0056] The natural pigment component is composed of radish root extract and sweet potato root extract in a weight ratio of 3:2.

[0057] The preparation method of the lipstick comprises the following steps:

[0058] Stirring and mixing castor seed oil, Rhus chinensis oil and wing nut oil at a stirring speed of 150 rpm for 5 minutes, and then subjecting to ultrasonic-microwave composite field synergistic treatment to obtain the vegetable oil component;

[0059] The natural wax-based component is subjected to a first heating and stirring step to obtain a first material;

[0060] Adding the vegetable oil component to the first material and performing a second heating and stirring to obtain a second material;

[0061] Add the remaining components to the second material, perform a third heating and stirring, and then inject into a mold for cooling and shaping to obtain the lipstick;

[0062] Among them, the working condition parameters of the ultrasonic-microwave composite field synergistic treatment include: microwave power is 350W, ultrasonic power is 190W, and treatment time is 5 minutes; the working condition parameters of the first heating and stirring include: temperature is 85°C, time is 10 minutes, and stirring speed is 150rpm; the working condition parameters of the first heating and stirring include: temperature is 73°C, time is 10 minutes, and stirring speed is 250rpm; the working condition parameters of the third heating and stirring include: temperature is 60°C, time is 10 minutes, and stirring speed is 250rpm; the mold temperature is 35°C.

[0063] Example 2

[0064] This example provides a lipstick, which comprises the following components in percentage by weight:

[0065] 50 parts of vegetable oil components, 10 parts of natural wax-based components, 8 parts of natural pigment components and 1 part of vitamin E;

[0066] The plant oil component is obtained by compounding castor seed oil, Rhus chinensis oil and samaras nut oil in a weight ratio of 4:8:0.2;

[0067] The natural wax-based component is candelilla wax;

[0068] The natural pigment component is radish root extract.

[0069] The preparation method of the lipstick comprises the following steps:

[0070] Stirring and mixing castor seed oil, Rhus chinensis oil and wing nut oil at a stirring speed of 150 rpm for 5 minutes, and then subjecting to ultrasonic-microwave composite field synergistic treatment to obtain the vegetable oil component;

[0071] The natural wax-based component is subjected to a first heating and stirring step to obtain a first material;

[0072] Adding the vegetable oil component to the first material and performing a second heating and stirring to obtain a second material;

[0073] Add the remaining components to the second material, perform a third heating and stirring, and then inject into a mold for cooling and shaping to obtain the lipstick;

[0074] Among them, the working condition parameters of the ultrasonic-microwave composite field synergistic treatment include: microwave power is 300W, ultrasonic power is 240W, and treatment time is 7 minutes; the working condition parameters of the first heating and stirring include: temperature is 85°C, time is 10 minutes, and stirring speed is 150rpm; the working condition parameters of the first heating and stirring include: temperature is 73°C, time is 10 minutes, and stirring speed is 250rpm; the working condition parameters of the third heating and stirring include: temperature is 60°C, time is 10 minutes, and stirring speed is 250rpm; the mold temperature is 35°C.

[0075] Example 3

[0076] This example provides a lipstick, which comprises the following components in percentage by weight:

[0077] 70 parts of vegetable oil components, 20 parts of natural wax-based components, 17 parts of natural pigment components and 5 parts of vitamin E;

[0078] The plant oil component is obtained by compounding castor seed oil, Rhus chinensis oil and samarassima oil in a weight ratio of 7:13:0.5;

[0079] The natural wax-based component is candelilla wax;

[0080] The natural pigment component is radish root extract.

[0081] The preparation method of the lipstick comprises the following steps:

[0082] Stirring and mixing castor seed oil, Rhus chinensis oil and wing nut oil at a stirring speed of 150 rpm for 5 minutes, and then subjecting to ultrasonic-microwave composite field synergistic treatment to obtain the vegetable oil component;

[0083] The natural wax-based component is subjected to a first heating and stirring step to obtain a first material;

[0084] Adding the vegetable oil component to the first material and performing a second heating and stirring to obtain a second material;

[0085] Add the remaining components to the second material, perform a third heating and stirring, and then inject into a mold for cooling and shaping to obtain the lipstick;

[0086] Among them, the working condition parameters of the ultrasonic-microwave composite field synergistic treatment include: microwave power is 400W, ultrasonic power is 150W, and treatment time is 3 minutes; the working condition parameters of the first heating and stirring include: temperature is 85°C, time is 10 minutes, and stirring speed is 150rpm; the working condition parameters of the first heating and stirring include: temperature is 73°C, time is 10 minutes, and stirring speed is 250rpm; the working condition parameters of the third heating and stirring include: temperature is 60°C, time is 10 minutes, and stirring speed is 250rpm; the mold temperature is 35°C.

[0087] Comparative Example 1

[0088] This example provides a lipstick and a preparation method thereof, which is different from Example 1 only in that the plant oil component is obtained by compounding castor seed oil, Rhus chinensis oil and wing nut oil in a weight ratio of 11:5:0.3; the remaining steps and parameters are the same.

[0089] Comparative Example 2

[0090] This example provides a lipstick and a preparation method thereof, which is different from Example 1 only in that Rhus chinensis oil is replaced with Limnanthes bidentata seed oil (CAS registration number is 153065-40-8); the remaining steps and parameters are the same.

[0091] Comparative Example 3

[0092] This example provides a lipstick and a preparation method thereof, which differs from Example 1 only in that: the preparation method of the plant oil component is adjusted as follows: castor seed oil, Rhus chinensis oil and samarassima oil are stirred and mixed at a stirring speed of 150 rpm for 5 minutes, then subjected to microwave treatment at a microwave power of 350 W for 5 minutes, and finally subjected to ultrasonic treatment at an ultrasonic power of 190 W for 5 minutes; the remaining steps and parameters are the same.

[0093] Test Case

[0094] In this example, the lipsticks obtained in the above-mentioned Examples 1 to 3 and Comparative Examples 1 to 3 were subjected to a high temperature stability test.

[0095] Test method: The lipsticks obtained in Examples 1 to 3 and Comparative Examples 1 to 3 were placed in a 50°C environment for 3 weeks, and then restored to room temperature to observe whether there was "sweating" phenomenon.

[0096] The test results are shown in Table 1.

[0097] Table 1

[0098]

[0099]

[0100] It can be seen from Table 1 that, compared with the comparative example, the lipstick provided in the embodiment of the present invention has excellent high temperature stability, and effectively avoids the problem that the natural plant lipstick is very easy to "sweat". In addition, based on the results of the above high temperature test, in order to further verify the effect of the lipstick provided in Example 1 in actual use, a use evaluation study involving 20 female subjects was organized. After the use period, the lip condition of the subjects was evaluated again. The results showed that the lip moisturization of all subjects was significantly improved, the lip roughness was significantly reduced, and the lip skin became more lubricated and shiny. This improvement was clearly reflected visually, and was also confirmed by the subjects' self-perception. During the entire use process, no subject reported any discomfort, allergic reaction or worsening of lip dryness.

[0101] In summary, the embodiments of the present invention provide a lipstick and a preparation method thereof. The present invention provides a pure natural plant lipstick, the raw materials are green and natural, and no chemical components such as petroleum derivatives are added, thereby ensuring the safety of use, and having excellent affinity with the skin, and can effectively moisturize the lips. In addition, this lipstick has stable performance in a high temperature environment, effectively solving the problem that traditional natural lipsticks are very easy to "sweat", and bringing consumers a more lasting and comfortable use experience.

[0102] Various embodiments of the present invention may be presented in the form of a range; it should be understood that the description in the form of a range is only for convenience and brevity, and should not be understood as a rigid limitation on the scope of the present invention; therefore, the range description should be considered to have specifically disclosed all possible sub-ranges and single numerical values ​​within the range. For example, the range description from 1 to 6 should be considered to have specifically disclosed sub-ranges, such as from 1 to 3, from 1 to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6, etc., as well as single numbers within the range, such as 1, 2, 3, 4, 5 and 6, which apply regardless of the range. In addition, whenever a numerical range is indicated herein, it is meant to include any cited number (fractional or integer) within the indicated range.

[0103] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A lipstick, characterized in that: The lipstick comprises the following components in parts by weight: 50-70 parts of vegetable oil components, 10-20 parts of natural wax-based components, 8-17 parts of natural pigment components and 1-5 parts of vitamin E; The plant oil component is obtained by compounding castor seed oil, Rhus chinensis oil and wing nut oil in a weight ratio of (4-7):(8-13):(0.2-0.5).

2. The lipstick according to claim 1, characterized in that: The lipstick comprises the following components in parts by weight: 62 parts of vegetable oil components, 16 parts of natural wax-based components, 12 parts of natural pigment components and 2 parts of vitamin E.

3. The lipstick according to claim 1, characterized in that: The weight ratio of the castor seed oil, the Rhus chinensis oil and the samaras nut oil is 5:11:0.

3.

4. The lipstick according to claim 1, characterized in that: The natural wax-based component includes at least one of beeswax and candelilla wax.

5. The lipstick according to claim 1, characterized in that: The natural wax-based component is composed of beeswax and candelilla wax in a weight ratio of (1-2):(5-9).

6. The lipstick according to claim 1, characterized in that: The natural pigment component includes at least one of a radish root extract and a sweet potato root extract.

7. A method for preparing the lipstick according to any one of claims 1 to 6, characterized in that: The preparation method comprises the following steps: Stirring and mixing castor seed oil, Rhus chinensis oil and wing nut oil, and then subjecting them to ultrasonic-microwave composite field synergistic treatment to obtain the vegetable oil component; The natural wax-based component is subjected to a first heating and stirring step to obtain a first material; Adding the vegetable oil component to the first material and performing a second heating and stirring to obtain a second material; The remaining components are added to the second material for a third heating and stirring, and then injected into a mold for cooling and shaping to obtain the lipstick.

8. The method for preparing lipstick according to claim 7, characterized in that: The working condition parameters of the ultrasonic-microwave composite field synergistic treatment include: microwave power of 300-400W, ultrasonic power of 150-240W, and treatment time of 3-7 minutes.

9. The method for preparing lipstick according to claim 7, characterized in that: The working condition parameters of the first heating and stirring include: temperature of 82-90°C, time of 5-15 minutes, and stirring speed of 100-200rpm; the working condition parameters of the first heating and stirring include: temperature of 70-75°C, time of 5-15 minutes, and stirring speed of 200-300rpm; the working condition parameters of the third heating and stirring include: temperature of 50-65°C, time of 5-15 minutes, and stirring speed of 200-300rpm.

10. The method for preparing lipstick according to claim 7, characterized in that: The mold temperature is 30-40°C.