Mosquito-repellent and sunscreen composition, product, and manufacturing method

Abstract

This application discloses a mosquito repellent and sunscreen composition, product, and manufacturing process thereof. The mosquito repellent and sunscreen composition comprises, by weight percentage, lemon eucalyptus oil (5% to 15%), alcohol (5% to 15%), chemical sunscreen agent (1% to 10%), synthetic esters (0.1% to 13%), water-based thickener (0.1% to 0.2%), water-based preservative (0.1% to 0.3%), oil-in-water emulsifier (0.5% to 5%), and pure water to make up the balance to 100%. In summary, the product made from this mosquito repellent and sunscreen composition is multifunctional, satisfying both sun protection and mosquito repellency needs in one application. This avoids the inconvenience of using multiple products simultaneously, allowing users to obtain dual protection from both sun and mosquitoes with just one product.

Description

Technical Field

[0001] This application relates to a mosquito repellent and sunscreen composition, product, and manufacturing process thereof, particularly a mosquito repellent and sunscreen composition, product, and manufacturing process thereof that is skin-friendly and long-lasting. Prior Technology

[0002] Dengue fever is an acute infectious disease caused by the dengue virus, primarily transmitted to humans by mosquitoes, such as Aedes albopictus and Aedes aegypti. With global climate change and warming trends, the geographical distribution and endemic areas of dengue fever are gradually expanding, posing a serious challenge to public health.

[0003] In 2023, Tainan City, Taiwan, experienced its worst dengue fever outbreak since 2015, with over 20,000 confirmed cases and 19 deaths reported throughout the year. In the same year, the Thai Epidemiology Department reported 132,126 dengue fever cases, including 142 deaths, as of mid-November. This represents a significant increase compared to the 48,679 cases and 32 deaths in 2022.

[0004] Europe has also been affected, with the Aedes albopictus mosquito spreading from Southern Europe to at least 13 countries, including Italy, France, Germany, Spain, and Greece. According to the European Centre for Disease Prevention and Control (ECDC), dengue fever cases within Europe rose from 71 in 2022 to 130 in 2023, compared to only 73 cases between 2010 and 2021. Furthermore, imported cases surged from 1,572 in 2022 to 4,900 in 2023. The ECDC attributes the rise in dengue fever cases to climate change and increased population movement.

[0005] Currently, mosquito repellent products on the market mainly fall into two categories: mosquito repellents and insecticides. Many traditional mosquito repellent products contain chemical ingredients, such as DEET (N,N-diethyl-3-methylbenzamide), which, although effective, may irritate the skin, especially for children and people with sensitive skin. Furthermore, the effective time of traditional mosquito repellent products is usually short, requiring frequent reapplication to maintain the effect, which increases the inconvenience of use.

[0006] Therefore, there is still room for improvement in conventional pesticide technologies. Summary of the Invention

[0007] The main purpose of this application is to solve the problems of traditional mosquito repellent products having short-lasting effects and being unfriendly to human skin.

[0008] To achieve the above objectives, one embodiment of this application provides a mosquito repellent and sunscreen composition, wherein the raw material composition comprises, by weight percentage: a lemon eucalyptus oil content ranging from 5% to 15%; an alcohol content ranging from 5% to 15%, wherein the alcohol content is greater than or equal to the lemon eucalyptus oil content; at least a chemical sunscreen agent content ranging from 1% to 10%; at least a synthetic ester content ranging from 0.1% to 13%; an aqueous thickener content ranging from 0.1% to 0.2%; an aqueous preservative content ranging from 0.1% to 0.3%; an oil-in-water emulsifier content ranging from 0.5% to 5%; and a pure water component to make up the balance to 100%.

[0009] Another embodiment of this application provides a process method for manufacturing a mosquito repellent and sunscreen composition, comprising the following steps: classifying the raw materials of the mosquito repellent and sunscreen composition according to the oil phase and the water phase; heating the oil phase and the water phase raw materials to 75°C respectively; pouring the water phase raw materials into the oil phase raw materials and stirring and emulsifying to form an emulsion, and then stopping the heating; mixing lemon eucalyptus essential oil and alcohol at room temperature to form a mixture; pouring the mixture into the emulsion and stirring evenly until the temperature drops to room temperature, thereby forming the mosquito repellent and sunscreen composition.

[0010] Another embodiment of this application provides a container for containing a mosquito repellent and sunscreen composition, comprising: a bottle body, a press-type nozzle, a dispensing tube, a sleeve, and a drain tube. The bottle body has an internal accommodating space for accommodating the mosquito repellent and sunscreen composition. A nozzle is disposed on the side of the press-type nozzle and is located above the bottle body. The dispensing tube is located at the bottom of the press-type nozzle and is connected to the nozzle. The sleeve covers part of the structure of the dispensing tube and houses a steel ball and an elastic element inside the sleeve. One end of the elastic element is attached to one end of the dispensing tube and is used to return the press-type nozzle to its initial position. The drain tube is connected to the other end of the sleeve and is located in the accommodating space, with one end of the drain tube near the bottom of the accommodating space. With the above structure, force is applied to the press-type nozzle, causing the drain tube to draw in the mosquito repellent and sunscreen composition and deliver it to the dispensing tube, and then spray the mosquito repellent and sunscreen composition through the nozzle.

[0011] The products made from the mosquito repellent and sunscreen composition of this application are multifunctional, which can meet the needs of sun protection and mosquito repellency at one time, avoiding the inconvenience caused by using multiple products in combination. Users only need to apply one product to obtain dual protection against sun and mosquitoes at the same time.

[0012] Furthermore, this application uses lemon eucalyptus essential oil as the main ingredient for mosquito repellent. Lemon eucalyptus essential oil is a naturally extracted plant oil with low irritation to human skin, making it particularly suitable for children and people with sensitive skin. In addition, lemon eucalyptus essential oil can maintain a good mosquito repellency rate for up to 3 hours after application, demonstrating its long-lasting mosquito repellent effect. Simple Explanation of the Diagram

[0013] [Figure 1] is a block flowchart of the manufacturing process of the mosquito repellent and sunscreen composition of this application. [Figure 2] is a cross-sectional schematic diagram of the container filled with the mosquito repellent and sunscreen composition of this application. [Figure 3] is a schematic diagram of the device for testing the repellency effect of the sunscreen and mosquito repellent spray of this application against Aedes mosquitoes. [Figure 4] is a schematic diagram of an embodiment of the artificial blood feeding device of this application. [Figure 5] shows the application of this application: sunscreen and mosquito repellent spray is applied to the gauze of the test tube and then evenly brushed on. [Figure 6] is a schematic diagram of an embodiment of the observation tube of this application. [Figure 7] is a schematic diagram of an embodiment of the test of the mosquito repellency effect of sunscreen and mosquito repellent spray in this application. [Figure 8] is a schematic diagram of an embodiment of this application used to calculate the blood-sucking rate of tested female mosquitoes. [Figure 9] is a schematic diagram of the summary report after the sun protection efficacy test of the sun protection factor analyzer was conducted on the sun protection and mosquito repellent spray in this application. [Figure 10] is the absorbance-wavelength graph generated after the sun protection factor analyzer was used to test the sun protection efficacy of the sun protection and mosquito repellent spray in this application. Implementation

[0014] Unless otherwise defined, technical terms used herein shall have the meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Furthermore, although specific methods and examples are described herein, their analogues or equivalents are also within the scope of this invention. And, unless otherwise stated, all numerical values ​​listed herein shall be deemed to include the meaning of "approximately". All publications and other references cited herein are incorporated herein in their entirety.

[0015] Referring to Figures 1 and 2, one embodiment of this application provides a mosquito repellent and sunscreen composition 20, the raw materials comprising, by weight percentage: a lemon eucalyptus oil content ranging from 5% to 15%; an alcohol content ranging from 5% to 15%, wherein the alcohol content must be greater than or equal to the lemon eucalyptus oil content; at least a chemical sunscreen agent content ranging from 1% to 10%; at least a synthetic ester content ranging from 0.1% to 13%; an aqueous thickener content ranging from 0.1% to 0.2%; an aqueous preservative content ranging from 0.1% to 0.3%; an oil-in-water emulsifier content ranging from 0.5% to 5%; and a pure water component to make up the balance to 100%.

[0016] The content of lemon eucalyptus essential oil can be 5.0%, 5.5%, 6.0%, 6.5%, 7.0%, 7.5%, 8.0%, 8.5%, 9.0%, 9.5%, 10.0%, 10.5%, 11.0%, 11.5%, 12.0%, 12.5%, 13.0%, 13.5%, 14.0%, 14.5%, or 15.0%.

[0017] The alcohol content can be 5.0%, 5.5%, 6.0%, 6.5%, 7.0%, 7.5%, 8.0%, 8.5%, 9.0%, 9.5%, 10.0%, 10.5%, 11.0%, 11.5%, 12.0%, 12.5%, 13.0%, 13.5%, 14.0%, 14.5%, or 15.0%.

[0018] The chemical sunscreens include ethylhexyl dimethyl PABA (EHDPABA), benzophenone-3 (BP-3), benzophenone-4 (BP-4), benzophenone-5 (BP-5), homosalate (HMS), ethylhexyl salicylate (EHS), phenylbenzimidazole sulfonic acid (PBSA), butyl methoxydibenzoylmethane (Avobenzone), terephthalylidene dicamphor sulfonic acid (TDSA), octocrylene (OCR), and drometrizole trisiloxane (Mexoryl) XL), Methylenebis-Benzotriazolyl Tetramethylbutylphenol, Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (Tinosorb S), Polysilicone-15 (PS-15), Benzylidene Camphor Sulfonic Acid (BCSA), Camphor Benzalkonium Methosulfate (CBMS), Diethylhexyl Butamido Triazone (DBT), Disodium Phenyl Dibenzimidazole Tetrasulfonate (DPDT), Isoamyl p-Methoxycinnamate (IMC), 4-Methylbenzylidene Camphor 4-MBC), PEG-25 PABA (PEG-25 PABA,The chemical sunscreen contains one or a combination of PEG-25 PABA, polyacrylamide methyl benzyllidene camphor (PAMBC), tris-biphenyl triazine (TBT), diethylamino hydroxybenzoyl hexyl benzyl benzate (Uvinul A Plus), octyl methoxycinnamate (octinoxate), or ethylhexyl triazone. The chemical sunscreen content is 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 6.5%, 7.0%, 7.5%, 8.0%, 8.5%, 9.0%, 9.5%, or 10.0%.

[0019] Among them, synthetic esters include ethylhexyl palmitate and isopropyl palmitate (IPP) as humectants; isopropyl myristate (IPM), ethylhexyl stearate, cetyl ethylhexanoate, dicaprylyl carbonat, isopropyl isostearate, and diethylhexyl carbonate as lubricants; dipropylene glycol dibenzoate, PPG-15 stearyl ether benzoate, and C12-15 alkyl benzoate as solvents to improve stability; and polyhydroxystearic acid as a dispersant. Acid); Butyl stearate as a thickener; Isocetyl stearate, Myristyl lactate, and Myristyl ether propionate as softeners; Propylene glycol stearate as an emulsifier; the above can be selected individually or in any combination. The synthetic ester content ranges from 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 6.5%, 7.0%, 7.5%, 8.0%, 8.5%, 9.0%, 9.5%, 10.0%, 10.5%, 11.0%, 11.5%, 12.0%, 12.5%, or 13.0%.

[0020] The water-based thickener is carboxymethyl cellulose (CMC), and the content of the water-based thickener is 0.10%, 0.11%, 0.12%, 0.13%, 0.14%, 0.15%, 0.16%, 0.17%, 0.18%, 0.19%, or 0.20%.

[0021] The water-based preservative is chlorphenesin (CP), and the content of the water-based preservative is 0.10%, 0.13%, 0.15%, 0.17%, 0.20%, 0.23%, 0.25%, 0.27%, or 0.30%.

[0022] The content of oil-in-water emulsifier (O / W emulsifier) ​​is 0.5%, 0.7%, 1.0%, 1.3%, 1.5%, 1.7%, 2.0%, 2.3%, 2.5%, 2.7%, 3.0%, 3.3%, 3.5%, 3.7%, 4.0%, 4.3%, 4.5%, 4.7%, or 5.0%.

[0023] It further includes a stretching agent, the content of which ranges from 0.1% to 1%, and the stretching agent is a composite of silica and methyl silicone. The content of the stretching agent is 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, or 1.0%.

[0024] It further includes a moisturizer, which is one or a combination of propylene glycol, glycerin, sorbitol, sodium hyaluronate, allantoin, butylene glycol, polyethylene glycol, mannitol, aloe vera, algae extract, tara endosperm extract, willowherb extract, cucumber extract, fruit extract, or isomer oligosaccharides. The content of the moisturizer ranges from 1% to 6%, and the moisturizer content is 1.0%, 1.3%, 1.5%, 1.7%, 2.0%, 2.3%, 2.5%, 2.7%, 3.0%, 3.3%, 3.5%, 3.7%, 4.0%, 4.3%, 4.5%, 4.7%, 5.0%, 5.3%, 5.5%, 5.7%, or 6.0%.

[0025] Please refer to Figure 1, which illustrates a manufacturing process for a mosquito repellent and sunscreen composition 20. The steps are as follows:

[0026] Step S1: The raw materials of the mosquito repellent and sunscreen composition 20 are classified into oil phase and water phase. The oil phase and water phase raw materials are heated to 75°C respectively. The water phase raw materials are poured into the oil phase raw materials and stirred to emulsify to form an emulsion. Then the heating is stopped.

[0027] Step S2: Mix the lemon eucalyptus essential oil with the alcohol at room temperature to form a mixture.

[0028] Step S3: Pour the mixture into the emulsion and stir evenly until the temperature drops to room temperature, thus forming the mosquito repellent and sunscreen composition 20.

[0029] Referring to Figure 2, a container filled with a mosquito repellent and sunscreen composition 20 is disclosed, comprising: a bottle body 10, a press-type nozzle 11, a dispensing tube 12, a sleeve 13, and a drain tube 16. The bottle body 10 has an internal accommodating space 101 for accommodating the mosquito repellent and sunscreen composition 20; a nozzle 111 is disposed on the side of the press-type nozzle 11 and is positioned above the bottle body 10; the dispensing tube 12 is disposed at the bottom of the press-type nozzle 11 and is connected to the nozzle 111; the sleeve 13 covers part of the structure of the dispensing tube 12, and a steel ball 14 and an elastic element 15 are housed inside the sleeve 13, with one end of the elastic element 15 abutting against... At one end of the liquid outlet tube 12, the elastic element 15 is used to return the press nozzle 11 to the initial position; the drainage tube 16 is connected to the other end of the sleeve 13, and the drainage tube 16 is located in the receiving space 101, and one end of the drainage tube 16 is close to the bottom of the receiving space 101; with the above structure, force is applied to the press nozzle 11, so that the drainage tube 16 draws in the mosquito repellent and sun protection composition 20 and delivers it to the liquid outlet tube 12, and sprays the mosquito repellent and sun protection composition 20 through the nozzle 111.

[0030] Please refer to Figures 3 to 8. After filling the mosquito repellent and sunscreen composition 20 of this application into a container to form a sunscreen and mosquito repellent spray, the sample was tested on Aedes aegypti mosquitoes. The sample submission date was June 20, 2024.

[0031] In this experiment, the lemon eucalyptus oil content of the sunscreen and mosquito repellent spray was 9%.

[0032] (a) Test insects: Aedes aegypti, 14-18 day old non-blood-sucking female adults, East District strain of Tainan City.

[0033] (ii) Number of insects: 12-18 female mosquitoes were used in the mosquito repellency test.

[0034] (III) Laboratory conditions: room temperature 25-28℃, relative humidity 75-85%.

[0035] Part 1: Repellency Tests of Sunscreen and Mosquito Repellent Sprays Against Aedes Mosquitoes

[0036] Detection method source: JA Klun, M. Kramer, M. Debboun. A new in vitro bioassay system for discovery of novel human-use mosquito repellents. J Am Mosq Control Assoc. 2005, 21 (1):64-70.

[0037] (I) Equipment, please refer to Figure 3

[0038] 1. Artificial blood feeding system: constant temperature control system 30, artificial blood feeding device 31 (glass test tube with a diameter of 1.9 cm and a length of 6 cm), artificial blood substitute, collagen membrane 32.

[0039] 2. World Health Organization Adult Drug Resistance Kit. Acrylic observation tube 33: 4.5 cm in diameter, 12 cm in height, with 50-mesh mesh. Test acrylic tube: 4.5 cm in diameter, 6 cm in height.

[0040] 3. Pullable partition 34.

[0041] (II) Verification Method

[0042] 1. Referring to Figure 4, set the temperature of the constant temperature control system 30 to 39℃, fill the substitute blood into the artificial blood feeding device 31, and when the substitute blood maintains a constant temperature of 36-37℃, seal the test tube opening with the collagen membrane 32 and fix it with a rubber band.

[0043] 2. Referring to Figure 5, apply the tested sunscreen and mosquito repellent spray at a dosage of 2 μL per square centimeter onto gauze. Then, use a moistened small brush to spread it evenly, avoiding the formation of a liquid film within the mesh. Hang the gauze in a ventilated area to air dry, forming the treatment group gauze (35). The control group gauze (36) was treated with alcohol (2 μL / cm²). The mosquito repellent efficacy was tested after 1 hour, 2 hours, and 3 hours of air drying.

[0044] 3. Please refer to Figure 6 and conduct the experiment using the World Health Organization adult drug resistance kit. Place 12 to 18 female adult insects that have not yet sucked blood and are 14 to 18 days old after emergence into the observation tube 33 (holding tubes).

[0045] 4. Referring to Figure 7, fix the gauze 35 of the sunscreen and mosquito repellent spray treatment group with different air drying times to one end of the test tube (gauze end of the test tube), so that the surface of the sprayed liquid is in contact with the test mosquito, pull open the partition 34, and transfer the test female mosquito from the observation tube 33 to the test tube.

[0046] 5. Referring to Figure 8 and Figure 3, bring the gauze end of the test tube into contact with the collagen membrane 32 of the artificial blood feeding device 31 and record the blood absorption rate for 10 minutes.

[0047] 6. The experiment was repeated 3 times.

[0048] Part Two: Results Processing: The experimental results in the table are expressed as the average of three repeated experimental values.

[0049] 1. The test results in the table are expressed as the values ​​of three repeated tests and the average value.

[0050] 2.

[0051] 3.

[0052] The gauze pads 35 treated with sunscreen and mosquito repellent spray were tested using an artificial blood feeding system to assess the repellency (avoidance effect) of the spray against Aedes aegypti mosquitoes (Table 1). The average blood-feeding rate of the control group was 86.9%. After treatment with the sunscreen and mosquito repellent spray, the average blood-feeding rates of the Aedes aegypti strain from the East District of Tainan City on the gauze pads 35 were 2.4%, 5.6%, and 19.0% at the 1st, 2nd, and 3rd hours, respectively. The repellency rates of the sunscreen and mosquito repellent spray against Aedes aegypti at the 1st, 2nd, and 3rd hours were 97.3%, 93.6%, and 78.1%, respectively.

[0053] Table 1. The effect of sunscreen and mosquito repellent sprays on preventing mosquito bites from Aedes aegypti mosquitoes. Test insects air dry Reasonable time experimental group vampire Number of insects Test Number of insects Bloodsucking rate (%) Avoidance rate (%) Aedes aegypti mosquito 1 hour Repeat 1 0 17 0.0 100.0 Tainan City, East District Repeat 2 0 13 0.0 100.0 strain Repeat 3 1 14 7.1 91.8 [average value] [2.4] [97.3] Aedes aegypti mosquito 2 hours Repeat 1 0 13 0.0 100.0 Tainan City, East District Repeat 2 2 12 16.7 80.8 strain Repeat 3 0 16 0.0 100.0 [average value] [5.6] [93.6] Aedes aegypti mosquito 3 hours Repeat 1 3 13 23.1 73.5 Tainan City, East District Repeat 2 2 17 11.8 86.5 strain Repeat 3 4 18 22.2 74.4 [average value] [19.0] [78.1] Aedes aegypti mosquito control group [repeat] [1] 13 14 92.9 [-] Tainan City, East District [repeat] [2] 11 13 84.6 [-] strain [repeat] [3] 15 18 83.3 [-] [average value] [86.9] [-]

[0054] Conclusion: The repellency effect of sunscreen and mosquito repellent spray on Aedes aegypti was tested using an artificial blood feeding system. After treatment with the sunscreen and mosquito repellent spray, the repellency rates of the gauze 35 in the treatment group against Aedes aegypti were 97.3%, 93.6%, and 78.1% at 1 hour, 2 hours, and 3 hours, respectively. The experiment confirms that the sunscreen and mosquito repellent spray has a repellent effect on Aedes aegypti for up to 3 hours.

[0055] Figures 9 and 10 show the results of testing using an SPF (Sun Protection Factor) Valve Analyzer after the mosquito repellent and sunscreen composition 20 of this application was filled into a container to form a sunscreen and mosquito repellent spray.

[0056] Please refer to Figure 9, which provides some detailed information about the sunscreen and mosquito repellent spray of this application. The following results can be seen from the figure:

[0057] 1. SPF value (59.27): SPF (Sun Protection Factor) is an indicator used to measure the ability of sunscreen to filter out ultraviolet B (280-320 nm) radiation. An SPF value of 59.27 indicates that the sunscreen and mosquito repellent spray of this application has a high protective ability in the UVB band. In other words, after using the sunscreen and mosquito repellent spray of this application, the skin can withstand 59.27 times more UVB radiation dose when exposed to sunlight than when the product is not used without sunburn.

[0058] 2. UVA / UVB ratio (0.843) and UVA / UVB ratio (0.88): The above ratios indicate the balance between the protection capabilities of this sunscreen and mosquito repellent spray in the UVA (320-400 nm) and UVB ranges. The values ​​of 0.843 and 0.88 show that the product provides relatively balanced protection against both UVA and UVB.

[0059] 3. Boots Star Rating (4 stars): The Boots star rating is based on the product's protection effect in the UVA range. The more stars, the stronger the UVA protection ability. 4 stars means that the sunscreen and mosquito repellent spray of this application performs excellently in terms of UVA protection.

[0060] 4. Critical wavelength (377.5 nm): The critical wavelength refers to the wavelength at which the energy accumulation of the sunscreen and mosquito repellent spray in this application reaches 90% in the absorption spectrum. 377.5 nm is close to 400 nm, indicating that the sunscreen and mosquito repellent spray in this application provides broad-spectrum protection, covering most of the UVA and UVB bands.

[0061] 5. Maximum percentage transmittance coefficient of variation (Max. %T COV: 14.23): This indicates the consistency of absorbance data during the test; a lower value indicates more stable measurement results. 14.23 is within a reasonable range, indicating that the test results are reliable.

[0062] 6. Curve Area (170.34): The curve area represents the total absorbance within a specified wavelength range (290-400 nm). The larger the area, the stronger the absorption capacity.

[0063] 7. UVA Protection Factor (UVA PF: 39.75) and Erythema UVA Protection Factor (Erythema UVA PF: 30.33): The UVA PF value indicates the protective ability of this sunscreen and mosquito repellent spray in the UVA band. Both values ​​are very high, indicating that this sunscreen and mosquito repellent spray also has a strong protective ability in the UVA band.

[0064] Please refer to Figure 10, which is mainly used to analyze the light absorption capacity of sunscreen and mosquito repellent sprays at different wavelengths, thereby evaluating their sun protection effect. The following results can be seen from the figure:

[0065] 1. Characteristics of the absorbance curves: Each curve represents one test scan, with a total of 9 scans (Scan1 to Scan9), and an average absorbance curve (Avg A). The absorbance values ​​range from approximately 1.6 to 1.9, indicating that the sunscreen and mosquito repellent spray of this application has a high absorption capacity for ultraviolet light within the test range. Furthermore, the curves of each scan largely overlap, indicating good consistency in absorbance measurement results between different scans, demonstrating high instrument stability and reliability of the measurement results. The dashed line (Avg Ab) in Figure 10 represents the average absorbance curve. This curve smoothly connects the average absorbance values ​​at each wavelength, further confirming the protective effect of the sunscreen and mosquito repellent spray of this application across the entire ultraviolet wavelength range.

[0066] 2. Wavelength range: The wavelength range is from 290 nm to 400 nm, almost covering the UVB (280-320 nm) and UVA (320-400 nm) ranges, indicating that the sunscreen and mosquito repellent spray of this application has high absorbance throughout the entire ultraviolet range, demonstrating its ability to provide broad-spectrum protection. The absorbance reaches its peak at a wavelength of approximately 335 nm, indicating that the sunscreen and mosquito repellent spray of this application has the strongest ultraviolet absorption capability in this wavelength band.

[0067] 3. Peaks and troughs: The absorbance begins to increase at around 320 nm and reaches its peak at approximately 340-350 nm. Subsequently, the absorbance decreases rapidly after 370 nm. This trend shows the absorption effect of the sunscreen and mosquito repellent spray of this application in the UVA and UVB bands.

[0068] In summary, the above experiments demonstrate the light absorption characteristics of the sunscreen and mosquito repellent spray of this application in the UVB and UVA range, exhibiting good light absorption capacity and stability, and providing broad-spectrum ultraviolet protection.

[0069] With the above structure, the advantages of this application are as follows:

[0070] 1. Multifunctional: The product made from the mosquito repellent and sun protection composition 20 of this application is multifunctional, which can meet the needs of sun protection and mosquito repellency at one time, avoiding the inconvenience caused by using multiple products in combination. Users only need to apply one product to obtain dual protection of sun protection and mosquito repellency at the same time.

[0071] 2. Excellent sun protection effect: The results of testing on the mosquito repellent and sun protection composition 20 of this application, which is filled into a container to form a sun protection and mosquito repellent spray, show that it has a high SPF value and high UVA, indicating that it has a high sun protection effect.

[0072] 3. Mosquito repellent effect: This application uses natural lemon eucalyptus essential oil as a mosquito repellent ingredient, which can not only effectively prevent mosquito bites, but also is less likely to cause skin allergies. With a content of at least 0.9% lemon eucalyptus essential oil, this application can continuously repel mosquitoes for at least 3 hours.

[0073] 4. Excellent moisturizing properties: It contains moisturizing ingredients that can alleviate skin dryness caused by the use of sunscreen.

[0074] The embodiments described above are merely illustrative of this application and are not intended to limit the scope of this application. All modifications or variations made without departing from the spirit of this application are within the scope of protection intended by this application.

[0075] 10: Bottle body 101: Storage Space 11: Press the nozzle 111: Nozzle 12: Discharge tube 13: Sleeve 14: Steel balls 15: Elastic component 16: Drainage tube 20: Mosquito repellent and sun protection combination 30: Constant Temperature Control System 31: Artificial blood feeding device 32: Collagen membrane 33: Observation tube 34: partition 35: Treatment group gauze 36: Control group gauze S1~S3: Steps

Claims

1. A mosquito repellent and sunscreen composition comprising, by weight percentage: a lemon eucalyptus oil, ranging from 5% to 15%; an alcohol, ranging from 5% to 15%, wherein the alcohol content is greater than or equal to the lemon eucalyptus oil content; and at least one chemical sunscreen agent, ranging from 1% to 10%, wherein the chemical sunscreen agent is ethylhexyl dimethyl PABA (EHDPABA), benzophenone-3 (BP-3), benzophenone-4 (BP-4), benzophenone-5 (BP-5), homosalate (HMS), ethylhexyl salicylate (EHS), phenylbenzimidazole sulfonic acid (PBSA), or butyl methoxydibenzoylmethane (Butyl... Methoxydibenzoylmethane (BMDM), Terephthalylidene Dicamphor Sulfonic Acid (TDSA), Octocrylene (OCR), Drometrizole Trisiloxane (DMT), Methylenebis-Benzotriazolyl Tetramethylbutylphenol (MBBT), Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (BEMT), Polysilicone-15 (PS-15), Benzylidene Camphor Sulfonic Acid (BCSA), Camphor Benzalkonium Methosulfate (CBMS), Diethylhexyl Butamido Triazone (DBT), disodium phenyl dibenzimidazole tetrasulfonate (DPDT), isoamyl p-methoxycinnamate (IMC), 4-methylbenzylidene camphor,4-MBC), PEG-25 PABA (PEG-25 PABA, PEG-25 PABA), polyacrylamide methyl benzyl camphor (PAMBC), tris-biphenyl triazine (TBT), diethylamino hydroxybenzoyl hexyl benzyl benzoate (DHHB), octyl methoxycinnamate (OMC), or ethylhexyl triazone (Ethylhexyl triazone) or combinations thereof; at least one synthetic ester, in a content ranging from 0.1% to 13%, wherein the synthetic ester is cetyl ethylhexanoate, dicaprylyl carbonat, ethylhexyl palmitate, or isopropyl myristate. Myristate (IPM), ethylhexyl stearate, butyl stearate, isopropyl isostearate, isopropyl palmitate (IPP), isocetyl stearate, myristyl ether propionate, propylene glycol stearate, decyl stearate, myristyl lactate, diethylhexyl carbonate, C12-15 alkyl benzoate, dipropylene glycol dibenzoate, PPG-15 stearyl ether benzoate, or polyhydroxystearic acid. The following are components of the following: an aqueous thickener comprising, but not limited to, one or a combination of, an acid; a water-based thickener comprising, in a concentration ranging from 0.1% to 0.2%, carboxymethyl cellulose; a water-based preservative comprising, in a concentration ranging from 0.1% to 0.3%, chlorphenesin; an oil-in-water emulsifier comprising, in a concentration ranging from 0.5% to 5%; and purified water, to make up to 100%.

2. The mosquito repellent and sunscreen composition as described in claim 1, wherein, It also contains an elongating agent, the content of which ranges from 0.1% to 1%.

3. The mosquito repellent and sunscreen composition as described in claim 2, wherein, The stretching agent is a complex of silica and methicone.

4. The mosquito repellent and sunscreen composition as described in claim 3, wherein, It also contains a moisturizer, the content of which ranges from 1% to 6%.

5. The mosquito repellent and sunscreen composition as described in claim 4, wherein, The moisturizer is one or a combination of propylene glycol, glycerin, sorbitol, sodium hyaluronate, allantoin, butylene glycol, polyethylene glycol, mannitol, aloe vera, algae extract, tara endosperm extract, willowherb extract, cucumber extract, fruit extract, or isomer oligosaccharides.

6. A method for manufacturing a mosquito repellent and sunscreen composition as described in claim 1, comprising the following steps: Step 1, classifying the raw materials of the mosquito repellent and sunscreen composition according to the oil phase and the water phase, heating the oil phase and the water phase raw materials to 75°C respectively, then pouring the water phase raw materials into the oil phase raw materials and stirring to emulsify to form an emulsion, and then stopping the heating; Step 2, mixing the lemon eucalyptus essential oil and the alcohol at room temperature to form a mixture; Step 3, pouring the mixture into the emulsion and stirring evenly until the temperature drops to room temperature, thereby forming the mosquito repellent and sunscreen composition.

7. A container internally filled with the mosquito repellent and sunscreen composition as described in any one of claims 1 to 5, comprising: a bottle body having an internal receiving space for receiving the mosquito repellent and sunscreen composition; a press-type nozzle with a nozzle disposed on its side and disposed above the bottle body; a dispensing tube disposed at the bottom of the press-type nozzle and communicating with the nozzle; and a sleeve covering a portion of the structure of the dispensing tube, the sleeve internally containing a steel ball. The device includes an elastic element, one end of which is abutted against one end of the liquid outlet tube, and the elastic element is used to return the press nozzle to its initial position; a drainage tube is connected to the other end of the sleeve, and the drainage tube is located in the receiving space, with one end of the drainage tube near the bottom of the receiving space; by means of the above structure, force is applied to the press nozzle, causing the drainage tube to draw in the mosquito repellent and sunscreen composition and deliver it to the liquid outlet tube, and spray the mosquito repellent and sunscreen composition through the nozzle.

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