A natural mosquito repellent

Abstract

The application is suitable for the technical field of mosquito repellent water preparation, and provides a natural mosquito repellent water, which is prepared from the following components in parts by weight: 20-30 parts of a lemongrass extract, 20-30 parts of a rosemary extract, 20-30 parts of an artemisia extract, 20-30 parts of a mint extract, 5-15 parts of an aloe extract, 3-10 parts of a honeysuckle extract, 2-8 parts of glycerol and 20-60 parts of purified water; the application forms a composite plant mosquito repellent system by using the lemongrass extract, the rosemary extract, the artemisia extract and the mint extract, compared with a traditional single plant mosquito repellent structure, a composite mosquito repellent layer can be formed by using volatile odors of various plants, so that the overall mosquito repellent range and mosquito repellent duration of the natural mosquito repellent water are improved. The lemongrass extract is used to form a basic mosquito repellent odor layer, the artemisia extract is used to enhance the mosquito repellent duration effect, the mint extract can form a cool volatile odor, and the rosemary extract is used to improve the stability of the plant volatile components.

Description

Technical Field

[0001] This invention belongs to the field of mosquito repellent preparation technology, and particularly relates to a natural mosquito repellent. Background Technology

[0002] With the improvement of people's living standards and the enhancement of health and environmental awareness, mosquito repellent products are gradually shifting from traditional chemical methods to natural plant-based repellents. Currently, most mosquito repellents on the market use chemical ingredients such as DEET and IR3535, which repel mosquitoes through chemical scents. While these products can achieve a certain degree of mosquito repellency, some also contain industrial additives such as alcohol, preservatives, chemical fragrances, and stabilizers. Long-term use can easily irritate human skin, especially limiting their suitability for children, pregnant women, and people with sensitive skin.

[0003] In addition, although some natural plant mosquito repellent products use plant extracts as the main mosquito repellent ingredients, the volatile components of plants are unstable and are prone to problems such as excessively fast evaporation, short shelf life and unbalanced odor. Therefore, existing products usually still need to add industrial preservatives or chemical stabilizers to maintain product preservation performance, thereby reducing the natural and environmentally friendly performance of the products.

[0004] Meanwhile, existing plant-based mosquito repellent products often use high-temperature extraction or open mixing methods during the preparation process, which can easily lead to the loss of volatile oil components in the plants during processing, thus affecting the final mosquito repellent effect. In addition, some products have poor adhesion after spraying, resulting in a short duration of mosquito repellency, which is difficult to meet the needs of daily use. Summary of the Invention

[0005] This invention provides a natural mosquito repellent, aiming to solve the problems mentioned in the background art.

[0006] The present invention is implemented as follows: a natural mosquito repellent, comprising: the natural mosquito repellent is made from the following components in parts by weight: 20-30 parts of Imperata cylindrica extract, 20-30 parts of rosemary extract, 20-30 parts of Artemisia argyi extract, 20-30 parts of peppermint extract, 5-15 parts of aloe vera extract, 3-10 parts of honeysuckle extract, 2-8 parts of glycerin, and 20-60 parts of purified water;

[0007] The natural mosquito repellent was prepared through the following steps:

[0008] S1: Take the raw materials of Imperata cylindrica, rosemary, wormwood, mint, aloe vera and honeysuckle respectively for screening, impurity removal and cleaning;

[0009] S2: Chop the cleaned plant materials and place them in a low-temperature circulating environment of 40-55℃ for drying and dehydration;

[0010] S3: Place the dried Imperata cylindrica, rosemary, wormwood, mint, aloe vera and honeysuckle into separate extraction containers, and add 3-8 times the weight of the plant raw materials of purified water for low-temperature extraction to obtain the corresponding plant extracts.

[0011] S4: Each plant extract is filtered to remove residue;

[0012] S5: Add the extracts of Imperata cylindrica, rosemary, Artemisia argyi, peppermint, aloe vera, honeysuckle, glycerin, and purified water into a closed mixing tank according to the specified proportions and circulate them for mixing.

[0013] S6: After the mixed liquid is allowed to stand and defoam, it is then bottled to form a finished natural mosquito repellent.

[0014] Preferably, in S2, the length of the chopped plant material particles is controlled to be 3-8 mm to improve the degree of plant cell breakage and increase the release efficiency of active ingredients.

[0015] Preferably, in S2, the low-temperature cyclic drying time is controlled to be 3-10 hours, and the moisture content of the plant raw materials is controlled to be 8-12%.

[0016] Preferably, in S3, the low-temperature extraction temperature is controlled at 35-50℃, the extraction time is controlled at 2-6h, and the intermittent turning method is used during the extraction process to improve the uniformity of the release of plant active ingredients.

[0017] Preferably, in S4, the filtration and slag removal process includes coarse filtration and fine filtration, with coarse filtration using an 80-120 mesh filter screen and fine filtration using a 150-200 mesh filter screen.

[0018] Preferably, in S5, the circulating mixing speed is controlled at 30-80 r / min, and a closed mixing environment is adopted to reduce the loss of volatile plant components.

[0019] Preferably, the aloe vera extract is used to enhance the soothing and moisturizing effect of natural mosquito repellent on the skin and reduce the irritation of the skin by the volatile components of the plant.

[0020] Preferably, the honeysuckle extract is used to enhance the natural antibacterial properties of the natural mosquito repellent and, together with the rosemary extract, forms a natural and stable system free of industrial preservatives.

[0021] Preferably, the glycerin is used to improve skin adhesion after spraying the natural mosquito repellent, thereby prolonging the duration of action of the plant-based volatile mosquito repellent ingredients.

[0022] Preferably, the natural mosquito repellent does not contain DEET, IR3535, industrial preservatives, chemical fragrances, or alcoholic irritants. After spraying, it forms a composite mosquito repellent layer through the volatile aromas of various plants, thereby reducing the probability of mosquitoes approaching and improving human comfort.

[0023] Compared with related technologies, the natural mosquito repellent provided by this invention has the following beneficial effects:

[0024] 1. This application utilizes extracts from Imperata cylindrica, rosemary, Artemisia argyi, and peppermint to form a composite plant-based mosquito repellent system. Compared to traditional single-plant mosquito repellent structures, this system leverages the volatile aromas of multiple plants to create a composite mosquito repellent layer, thereby enhancing the overall mosquito repellent range and duration of the natural mosquito repellent. Specifically, Imperata cylindrica extract forms the basic mosquito repellent aroma layer, Artemisia argyi extract enhances the sustained mosquito repellent effect, peppermint extract provides a refreshing volatile aroma, and rosemary extract improves the stability of the plant's volatile components. Through the synergistic effect of these multiple plant mosquito repellent components, the rapid evaporation of plant aromas is reduced, and the uniformity of the mosquito repellent aroma coverage is improved. Furthermore, this application employs low-temperature extraction and low-temperature drying methods to prepare the plant extracts, which reduces the damage to the volatile mosquito repellent components caused by high-temperature environments, increases the retention rate of effective plant components, and further enhances the overall mosquito repellent effect and stability of the natural mosquito repellent.

[0025] 2. This application utilizes a natural antibacterial and stabilizing system formed by honeysuckle extract and rosemary extract, which can improve the overall storage stability of natural mosquito repellent without adding industrial preservatives. Specifically, the honeysuckle extract enhances the natural antibacterial properties of the mosquito repellent, reducing the probability of microbial growth within the liquid. The natural antioxidants in the rosemary extract reduce the oxidative decomposition of the plant extracts, thereby minimizing the occurrence of odors, sedimentation, and spoilage during long-term storage. Compared to traditional plant-based mosquito repellent products that rely on industrial preservatives for stability, this application employs a comprehensive natural plant extraction system, effectively reducing the irritation of industrial preservatives to human skin and improving the overall green and environmentally friendly performance of the natural mosquito repellent, while also enhancing its suitability for use by children and sensitive individuals.

[0026] 3. This application improves skin comfort and long-lasting mosquito repellent performance after spraying natural mosquito repellent by adding aloe vera extract and glycerin. The natural moisturizing components in aloe vera extract form a soothing and moisturizing layer on the skin, reducing discomfort caused by direct contact of the volatile plant-based mosquito repellent ingredients and enhancing skin comfort after spraying. Glycerin improves the adhesion of the sprayed liquid, allowing the volatile plant-based mosquito repellent ingredients to adhere continuously to the skin or clothing surface, reducing rapid evaporation and extending the duration of release. Through the synergistic effect of aloe vera extract and glycerin, the overall comfort and long-lasting mosquito repellent effect of the natural mosquito repellent are improved.

[0027] 4. This application utilizes a filtration structure combining coarse and fine filtration of plant extracts, along with a closed-loop mixing system, to prepare natural mosquito repellent. This improves the overall stability and spray uniformity of the natural mosquito repellent. Coarse filtration removes larger particulate impurities from the plant extracts, while fine filtration reduces the residue of fine plant fibers, thus lowering the probability of subsequent spray nozzle clogging and improving the transparency and spray uniformity of the natural mosquito repellent. The closed-loop mixing structure reduces the loss of volatile plant components during mixing and improves the mixing uniformity between different plant extracts, thereby enhancing the overall stability and mosquito-repelling effect of the natural mosquito repellent. Furthermore, by controlling the rotation speed of the circulating mixture, the loss of volatile plant components caused by high-speed stirring can be further reduced, improving the overall product quality of the natural mosquito repellent. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall process of the present invention;

[0029] Figure 2 This is a schematic diagram illustrating the synergistic effect of the components of this invention;

[0030] Figure 3 This is a graph showing the change in mosquito repellency rate over time for different samples of the present invention.

[0031] Figure 4 This is a graph showing the effect of the concentration of the present invention on the duration of mosquito repellency.

[0032] Figure 5 This is a graph showing the effect of storage time on pH value in this invention.

[0033] Figure 6 This is a graph showing the effect of storage time on the total bacterial count in this invention. Detailed Implementation

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0035] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0036] Example 1

[0037] A preferred embodiment of the natural mosquito repellent provided by the present invention is as follows: Figures 1 to 6 As shown: A natural mosquito repellent, comprising: the natural mosquito repellent is made from the following components in parts by weight: 20-30 parts of Imperata cylindrica extract, 20-30 parts of Rosemary extract, 20-30 parts of Artemisia argyi extract, 20-30 parts of Peppermint extract, 5-15 parts of Aloe vera extract, 3-10 parts of Honeysuckle extract, 2-8 parts of Glycerin, and 20-60 parts of purified water;

[0038] Natural mosquito repellent is prepared through the following steps:

[0039] S1: Take the raw materials of Imperata cylindrica, rosemary, wormwood, mint, aloe vera and honeysuckle respectively for screening, impurity removal and cleaning;

[0040] S2: Chop the cleaned plant materials and place them in a low-temperature circulating environment of 40-55℃ for drying and dehydration;

[0041] S3: Place the dried Imperata cylindrica, rosemary, wormwood, mint, aloe vera and honeysuckle into separate extraction containers, and add 3-8 times the weight of the plant raw materials of purified water for low-temperature extraction to obtain the corresponding plant extracts.

[0042] S4: Each plant extract is filtered to remove residue;

[0043] S5: Add the extracts of Imperata cylindrica, rosemary, Artemisia argyi, peppermint, aloe vera, honeysuckle, glycerin, and purified water into a closed mixing tank according to the specified proportions and circulate them for mixing.

[0044] S6: After the mixed liquid is allowed to stand and defoam, it is then bottled to form a finished natural mosquito repellent.

[0045] In this embodiment, a composite plant-based mosquito repellent system is formed by extracts of Imperata cylindrica, rosemary, Artemisia argyi, and peppermint. Imperata cylindrica extract forms the basic mosquito repellent scent layer, rosemary extract improves the stability of volatile plant components, Artemisia argyi extract enhances the long-lasting mosquito repellent effect, and peppermint extract creates a refreshing volatile scent. The synergistic effect of multiple plant extracts can improve the overall mosquito repellent range and duration of the natural mosquito repellent, while reducing the problem of overly strong scents from a single plant and improving user comfort.

[0046] In S2, the particle length of the chopped plant raw materials is controlled to be 3-8mm to improve the degree of plant cell breakage and increase the release efficiency of active ingredients.

[0047] In this embodiment, chopping the plant raw materials can increase the degree of plant cell breakage, making it easier for the volatile mosquito-repellent components inside the plant to be released into the extract. At the same time, the 3-8mm particle length can avoid the problem of insufficient release of effective ingredients due to excessively large particles, and reduce the problem of filtration difficulties caused by excessively small particles, thereby improving the overall extraction efficiency of the plant extract and the stability of subsequent filtration.

[0048] In S2, the low-temperature circulating drying time is controlled at 3-10 hours, and the moisture content of the plant raw materials is controlled at 8-12%.

[0049] In this embodiment, the low-temperature cyclic drying method can reduce the damage of high-temperature environment to the volatile active ingredients of plants. By controlling the moisture content of plant raw materials within the range of 8-12%, the impact of residual moisture inside the plants on the stability of subsequent extraction is reduced. At the same time, the problem of mold growth due to excessive moisture content of plant raw materials is avoided, thereby improving the overall stability of the preparation of natural mosquito repellent and the retention rate of plant effective ingredients.

[0050] In S3, the low-temperature extraction temperature is controlled at 35-50℃, the extraction time is controlled at 2-6h, and the intermittent turning method is used during the extraction process to improve the uniformity of the release of plant active ingredients.

[0051] In this embodiment, by controlling the extraction temperature at 35-50℃ during the low-temperature extraction process, the problem of rapid volatilization of plant volatile oils during the extraction stage can be reduced. Furthermore, continuous extraction for 2-6 hours can improve the release efficiency of effective components inside the plant. At the same time, the intermittent turning method can improve the uniformity of contact between the plant raw material and the purified water, thereby increasing the concentration of effective components in the plant extract and the uniformity of extraction.

[0052] In S4, the filtration and slag removal process includes coarse filtration and fine filtration. Coarse filtration uses an 80-120 mesh filter screen, and fine filtration uses a 150-200 mesh filter screen.

[0053] In this embodiment, by combining coarse filtration and fine filtration, the plant fibers and particulate impurities inside the plant extract can be filtered in stages. Coarse filtration is used to remove larger particulate impurities, while fine filtration is used to reduce the residue of fine fibers, thereby improving the overall transparency of the natural mosquito repellent and reducing the probability of subsequent spray nozzle clogging, thus improving the uniformity of the natural mosquito repellent spray.

[0054] In S5, the circulating mixing speed is controlled at 30-80 r / min, and a closed mixing environment is adopted to reduce the loss of volatile plant components.

[0055] In this embodiment, by controlling the circulating mixing speed within the range of 30-80 r / min, the problem of loss of volatile plant components caused by high-speed stirring can be reduced. The loss of plant odor volatilization is also reduced by using a closed mixing environment, while improving the mixing uniformity between plant extracts, thereby improving the overall stability and mosquito repellent effect of the natural mosquito repellent.

[0056] Aloe vera extract is used to enhance the soothing and moisturizing effects of natural mosquito repellent on the skin and reduce the irritation of volatile plant components on the skin.

[0057] In this embodiment, the natural moisturizing ingredients in aloe vera extract can form a soothing and moisturizing layer on the surface of human skin, thereby reducing the discomfort caused by direct contact of volatile plant-based mosquito repellent ingredients with human skin. At the same time, it improves the skin comfort after spraying natural mosquito repellent and enhances the suitability for use by children and sensitive individuals.

[0058] Honeysuckle extract is used to enhance the natural antibacterial properties of natural mosquito repellent, and combined with rosemary extract to form a natural and stable system without industrial preservatives.

[0059] In this embodiment, honeysuckle extract can enhance the natural antibacterial properties of natural mosquito repellent and form a natural stable system with the natural antioxidants in rosemary extract, thereby reducing the problem of microbial growth and oxidative decomposition of plant extracts during the storage of natural mosquito repellent, and improving the storage stability of the product without adding industrial preservatives.

[0060] Glycerin is used to improve the skin adhesion of natural mosquito repellent spray, thereby prolonging the duration of action of plant-based volatile mosquito repellent ingredients.

[0061] In this embodiment, glycerin can improve the liquid adhesion performance of natural mosquito repellent spray, allowing the volatile plant-based mosquito repellent ingredients to continuously adhere to the surface of human skin or clothing, and reducing the problem of rapid liquid evaporation, thereby prolonging the continuous release time of the volatile plant-based mosquito repellent ingredients and improving the overall continuous mosquito repellent effect of natural mosquito repellent spray.

[0062] Natural mosquito repellent does not contain DEET, IR3535, industrial preservatives, chemical fragrances, or alcohol. After spraying, it forms a complex mosquito repellent layer through the volatile scents of various plants, reducing the probability of mosquitoes approaching and improving user comfort.

[0063] In this embodiment, the natural mosquito repellent uses natural plant extracts as the main mosquito repellent ingredients and forms a composite mosquito repellent layer through the volatile odors of various plants, thereby reducing the probability of mosquitoes approaching. At the same time, since it does not contain DEET, IR3535, industrial preservatives, chemical fragrances, or alcohol, it can reduce skin irritation and improve the overall green and environmentally friendly performance of the natural mosquito repellent and the comfort of daily use.

[0064] To verify the mosquito-repellent effect and storage stability of the natural mosquito repellent of this application, a comparative experiment was conducted between the natural mosquito repellent of this application and ordinary plant-based mosquito repellent liquids. The experimental results are shown in Table 1 and Table 2, respectively.

[0065] Table 1. Comparison of mosquito repellent effects of different natural mosquito repellent formulations.

[0066] Experimental group 1 Imperata cylindrica + Rosemary + Artemisia argyi + Peppermint + Aloe vera + Honeysuckle + Glycerin 10.2 96 85 68 Experimental group 2 Grass buds + rosemary + mugwort + mint 7.6 90 71 51 Comparison Group 1 Artemisia argyi extract 5.1 74 48 31 Comparison Group 2 Commercially available common plant-based mosquito repellent 6.3 82 57 40 Blank group Purified water 0 8 5 2

[0067] Experiment Summary

[0068] The experimental data above show that the natural mosquito repellent provided in this application is significantly better than single plant mosquito repellent liquid and ordinary plant mosquito repellent products in terms of mosquito repellent duration and mosquito repellent rate. Among them, the addition of aloe vera extract, honeysuckle extract and glycerin to experimental group 1 can improve the stability and adhesion of plant volatile components, so that the plant mosquito repellent components can be continuously attached to the surface of human skin, thereby increasing the mosquito repellent duration.

[0069] Meanwhile, the composite plant-based mosquito repellent layer formed by multiple plant extracts can increase the coverage of the mosquito repellent scent and reduce the problem of rapid volatilization of a single plant scent. Therefore, it can still maintain a high mosquito repellency rate at 6h and 10h, indicating that the natural mosquito repellent water of this application has a good and sustained mosquito repellent effect.

[0070] Table 2. Stability test results of natural mosquito repellent under different storage conditions.

[0071] 0 12 15 6.1 6.1 15 24 820 6.1 5.8 30 38 3200 6.0 5.5 45 57 10500 6.0 5.2 60 79 23800 5.9 5.0 90 126 56200 5.9 4.7

[0072] Experiment Summary

[0073] The stability test results show that the total bacterial count of the natural mosquito repellent in this application increases slowly under long-term storage conditions, and the pH value changes little, indicating that the natural mosquito repellent has good overall stability.

[0074] In the experimental group, the honeysuckle extract and rosemary extract form a natural antibacterial and stabilizing system, which can reduce the growth rate of microorganisms inside the liquid. At the same time, the natural antioxidants in the rosemary extract can reduce the oxidation and decomposition of plant extracts. Therefore, it can still maintain good storage stability without adding industrial preservatives.

[0075] In contrast, the control group, lacking a natural antibacterial stabilizing system, showed a significant increase in total bacterial count and a rapid decrease in pH value as storage time increased, which easily led to deterioration of the plant extract. This further demonstrates that the natural mosquito repellent water of this application has a better natural antibacterial stabilizing effect and storage performance.

[0076] In summary, when using this invention, the raw materials of cogon grass, rosemary, mugwort, mint, aloe vera and honeysuckle are first screened and impurities are removed, and dust and impurities attached to the plant surface are removed by a cleaning structure. Then, the plant cell fragmentation is increased by a chopping process, so that the effective components of the plant can be released more easily.

[0077] After chopping, the plant material is placed in a low-temperature circulating drying environment for dehydration. By controlling the drying temperature between 40-55℃, the volatile mosquito-repellent components of the plant can be avoided from being destroyed under high temperature conditions, while reducing the internal moisture content of the plant and improving the subsequent extraction efficiency.

[0078] Subsequently, different plant materials were placed in separate extraction containers and an appropriate amount of purified water was added for low-temperature extraction. The volatile mosquito-repellent components inside the plants were gradually released into the liquid through the low-temperature extraction environment of 35-50℃. At the same time, the uniformity of contact between the plants and purified water was improved by intermittent stirring, thereby improving the extraction efficiency of the plant's effective components. Since different plants are extracted separately, the problem of activity interference caused by the premature mixing of volatile oils from different plants during the extraction stage can be reduced.

[0079] After extraction, each plant extract is subjected to coarse filtration and fine filtration. The multi-stage filtration structure removes plant fibers and particulate impurities, reduces the probability of clogging of the subsequent spray structure, and improves the transparency and spray uniformity of the mosquito repellent.

[0080] Subsequently, extracts of Imperata cylindrica, rosemary, wormwood, peppermint, aloe vera, honeysuckle, glycerin, and purified water were added to a closed mixing tank according to the specified proportions for cyclic mixing. Low-speed circulation and stirring were used to reduce the loss of volatile plant components during the mixing process. The volatile plant aromas released by Imperata cylindrica, wormwood, and peppermint formed the main mosquito-repellent scent layer. Rosemary and honeysuckle extracts formed a natural antibacterial and stabilizing system, thereby improving the product's storage stability without the addition of industrial preservatives. Aloe vera extract reduced the irritation of volatile plant components to human skin, while glycerin improved the adhesion of the liquid after spraying, allowing the plant-based mosquito-repellent components to evaporate slowly and prolonging the mosquito-repellent duration.

[0081] After mixing, the compound mosquito repellent liquid is left to stand to defoam, reducing the amount of air bubbles inside the liquid and improving filling stability. Then it is filled into the spray container. When the user presses the nozzle, the natural mosquito repellent water forms uniform atomized particles under the action of the micro-mist nozzle and adheres to the surface of human skin or clothing. Through the volatile odors of various plants, a compound mosquito repellent layer is formed, thereby reducing the probability of mosquitoes approaching and achieving a natural mosquito repellent effect.

[0082] It is worth noting that the circuits, electronic components, and modules involved in this invention are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this invention does not involve improvements to the software and methods.

[0083] It should be understood that the disclosed apparatus can be implemented in other ways, given the several embodiments provided in this application. For example, the apparatus embodiments described above are merely illustrative; the division of units described above is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or communication connections shown or discussed may be through some interfaces; the indirect coupling or communication connections between devices or units may be telecommunications or other forms.

[0084] 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 invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of the present invention according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of the present invention. These technical solutions also fall within the scope of protection of the present invention.

Claims

1. A natural mosquito repellent, characterized in that: The natural mosquito repellent is made from the following components by weight: 20-30 parts of Imperata cylindrica extract, 20-30 parts of rosemary extract, 20-30 parts of Artemisia argyi extract, 20-30 parts of peppermint extract, 5-15 parts of aloe vera extract, 3-10 parts of honeysuckle extract, 2-8 parts of glycerin, and 20-60 parts of purified water. The natural mosquito repellent was prepared through the following steps: S1: Take the raw materials of Imperata cylindrica, rosemary, wormwood, mint, aloe vera and honeysuckle respectively for screening, impurity removal and cleaning; S2: Chop the cleaned plant materials and place them in a low-temperature circulating environment of 40-55℃ for drying and dehydration; S3: Place the dried Imperata cylindrica, rosemary, wormwood, mint, aloe vera and honeysuckle into separate extraction containers, and add 3-8 times the weight of the plant raw materials of purified water for low-temperature extraction to obtain the corresponding plant extracts. S4: Each plant extract is filtered to remove residue; S5: Add the extracts of Imperata cylindrica, rosemary, Artemisia argyi, peppermint, aloe vera, honeysuckle, glycerin, and purified water into a closed mixing tank according to the specified proportions and circulate them for mixing. S6: After the mixed liquid is allowed to stand and defoam, it is then bottled to form a finished natural mosquito repellent.

2. The natural mosquito repellent according to claim 1, characterized in that: In S2, the length of the chopped plant material particles is controlled to be 3-8 mm to improve the degree of plant cell breakage and increase the release efficiency of active ingredients.

3. The natural mosquito repellent according to claim 1, characterized in that: In S2, the low-temperature cyclic drying time is controlled to be 3-10 hours, and the moisture content of the plant raw materials is controlled to be 8-12%.

4. The natural mosquito repellent according to claim 1, characterized in that: In S3, the low-temperature extraction temperature is controlled at 35-50℃, the extraction time is controlled at 2-6h, and the intermittent turning method is used during the extraction process to improve the uniformity of the release of plant active ingredients.

5. The natural mosquito repellent according to claim 1, characterized in that: In S4, the filtration and slag removal process includes coarse filtration and fine filtration. The coarse filtration uses an 80-120 mesh filter screen, and the fine filtration uses a 150-200 mesh filter screen.

6. The natural mosquito repellent according to claim 1, characterized in that: In S5, the circulating mixing speed is controlled at 30-80 r / min, and a closed mixing environment is adopted to reduce the loss of volatile plant components.

7. The natural mosquito repellent according to claim 1, characterized in that: The aloe vera extract is used to enhance the soothing and moisturizing effect of natural mosquito repellent on the skin and reduce the irritation of the skin by the volatile components of the plant.

8. The natural mosquito repellent according to claim 1, characterized in that: The honeysuckle extract is used to enhance the natural antibacterial properties of the natural mosquito repellent and, together with the rosemary extract, forms a natural and stable system free of industrial preservatives.

9. The natural mosquito repellent according to claim 1, characterized in that: The glycerin is used to improve skin adhesion after spraying natural mosquito repellent, thereby prolonging the duration of action of the plant-based volatile mosquito repellent ingredients.

10. The natural mosquito repellent according to claim 1, characterized in that: The natural mosquito repellent does not contain DEET, IR3535, industrial preservatives, chemical fragrances, or alcohol. After spraying, it forms a composite mosquito repellent layer through the volatile aromas of various plants, thereby reducing the probability of mosquitoes approaching and improving human comfort.

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