Tanning oil aerosol and preparation method thereof

Abstract

The invention discloses a tanning oil aerosol and a preparation method thereof, wherein the tanning oil aerosol comprises, by weight, 25 to 35 parts of coconut oil, 30 to 40 parts of ethylhexyl palmitate, 3 to 4 parts of homosalate, 0.5 to 1 part of tocopherol acetate, 2 to 4 parts of olive oil, 2 to 3 parts of isononyl isononanoate, 2 to 4 parts of sunflower seed oil, 0.2 to 0.4 parts of vegetable oil, 0.1 to 0.2 parts of squalane, 0.001 to 0.005 parts of a soothing agent, and 20 to 30 parts of a propellant. The tanning oil aerosol can achieve a natural, safe and long-lasting tanning effect, and also ensures that the skin color is uniform, natural and non-irritating in the fading stage after discontinuation of use.

Description

Technical Field

[0001] The invention belongs to the technical field of cosmetics, and in particular relates to a tanning oil aerosol and a preparation method thereof. Background Art

[0002] With the growth of the global economy and the improvement of living standards, society's definition of beauty has gradually diversified. In modern aesthetic concepts, a healthy and energetic image is increasingly respected, especially the natural sunshine, vibrant bronze or wheat-colored skin, which has become the ideal skin color pursued by many people. This change is particularly evident among the younger generation, who attach more importance to individual expression and differentiation, thus promoting the rapid expansion of the tanning product market.

[0003] In response to this trend, a variety of tanning solutions have been launched on the market, including traditional tanning creams and lotions, as well as more convenient sunscreen sprays. However, these traditional product forms have some obvious limitations. Among them, tanning creams and tanning lotions are both emulsion-based, which are easy to deteriorate and corrupt, and it is also difficult to achieve waterproof and water-resistant, resulting in limited use effect and durability. Although tanning sprays have the advantages of being easy to carry, simple to use, and able to be sprayed directly on the skin without sticking to the hands, existing tanning sprays generally achieve the ideal tanning effect of about 2 to 3 days by chemically reacting with the skin stratum corneum through the contact of dyes, and the instability of dyes not only makes the skin color after tanning appear unnatural, but also may be transferred to light-colored clothing after sweating, affecting the wearing experience. In addition, after stopping use, as the dye gradually falls off the skin, the user may experience a yellowish color fading stage, which not only affects the visual beauty, but also may reduce consumer satisfaction.

[0004] Therefore, there is an urgent need for a tanning oil aerosol and a preparation method thereof to solve the deficiencies of the prior art. Summary of the invention

[0005] In view of the above problems, the purpose of the present invention is to provide a tanning oil aerosol and a preparation method thereof, wherein the tanning oil aerosol can achieve a natural, safe and long-lasting tanning effect, and also ensure that the skin color is uniform, natural and non-irritating during the fading stage after discontinuation of use.

[0006] To achieve the above objectives, the first aspect of the present invention provides a tanning oil aerosol, which comprises, by mass, 25 to 35 parts of coconut oil, 30 to 40 parts of ethylhexyl palmitate, 3 to 4 parts of homosalate, 0.5 to 1 part of tocopherol acetate, 2 to 4 parts of olive oil, 2 to 3 parts of isononyl isononanoate, 2 to 4 parts of sunflower seed oil, 0.2 to 0.4 parts of vegetable oil, 0.1 to 0.2 parts of squalane, 0.001 to 0.005 parts of a soothing agent, and 20 to 30 parts of a propellant.

[0007] Compared with the prior art, the beneficial effects of the tanning oil aerosol of the present invention are as follows:

[0008] 1. The present invention selects 25-35 parts of coconut oil and 30-40 parts of ethylhexyl palmitate. Coconut oil is rich in medium-chain fatty acids and can penetrate into the deep layer of the skin to promote the activity of melanocytes, thereby accelerating the production of melanin. Coconut oil also has excellent moisturizing properties, maintains the moisture balance of the skin, ensures skin health, and ensures the safety of the tanning process. Ethylhexyl palmitate has moderate light transmittance, allowing an appropriate amount of UVA to penetrate the skin surface and reach the deep layer of the skin. An appropriate amount of UVA penetration can stimulate melanocytes to produce more melanin. Ethylhexyl palmitate is also an efficient skin penetration enhancer, which can help other active ingredients to be better absorbed by the skin, thereby improving UV absorption efficiency. The two cooperate with each other to not only stimulate melanocytes to produce melanin, but also improve UV absorption efficiency, thereby accelerating the tanning speed and achieving a natural and safe tanning effect. At the same time, homosalate, as a UVB absorber, provides necessary UVB protection, avoids the risk of sunburn and overexposure, and further ensures the safety and comfort of the tanning process. In addition, the vegetable oil and squalane in the formula can form a stable protective layer on the skin, which is highly stable and waterproof and is not easily washed off by water or lost due to sweating, so that the tanning effect can last for more than 30 days, significantly extending the durability of the tanning effect. Therefore, the present invention can accelerate the tanning speed and achieve a natural, safe and lasting tanning effect by optimizing the ratio of coconut oil and ethylhexyl palmitate and combining the effects of homosalate, vegetable oil and squalane.

[0009] 2. The tocopherol acetate in the formula can reduce the damage of free radicals to skin cells and slow down the skin aging process, which not only helps to keep the skin healthy, but also prevents the abnormal pigmentation caused by oxidation, thereby avoiding obvious yellow tone changes during the fading process. At the same time, olive oil and sunflower seed oil are all rich in natural antioxidants, which further enhance the antioxidant capacity, support the skin barrier function, and help maintain the natural transition of skin color during the fading process. In addition, the soothing agent has anti-inflammatory and sedative effects, which can alleviate the discomfort that may occur in the skin during the fading process, such as redness, dryness or itching, making the whole process more comfortable. Therefore, the present invention also ensures that the fading stage after discontinuation has uniform skin color, natural and non-irritating by combining tocopherol acetate, olive oil, sunflower seed oil and soothing agent.

[0010] Furthermore, the tanning oil aerosol of the present invention comprises 30 to 35 parts of coconut oil, 30 to 35 parts of ethylhexyl palmitate, 3 to 3.5 parts of homosalate, 0.7 to 1 part of tocopherol acetate, 3 to 4 parts of olive oil, 2 to 2.6 parts of isononyl isononanoate, 3 to 4 parts of sunflower seed oil, 0.3 to 0.4 part of vegetable oil, 0.12 to 0.18 part of squalane, 0.001 to 0.003 part of a soothing agent, and 20 to 25 parts of a propellant.

[0011] Furthermore, the tanning oil aerosol of the present invention comprises 31 to 34 parts of coconut oil, 31 to 33 parts of ethylhexyl palmitate, 3.1 to 3.3 parts of homosalate, 0.7 to 0.9 parts of tocopherol acetate, 3.5 to 4 parts of olive oil, 2.2 to 2.6 parts of isononyl isononanoate, 3.6 to 4 parts of sunflower seed oil, 0.3 to 0.35 parts of vegetable oil, 0.14 to 0.18 parts of squalane, 0.001 to 0.002 parts of a soothing agent, and 20 to 23 parts of a propellant.

[0012] Furthermore, the propellant of the present invention is butane.

[0013] Furthermore, the soothing agent of the present invention is bisabolol. Bisabolol has natural anti-inflammatory properties and can effectively reduce skin inflammation reactions that may be caused by sun exposure or the use of other ingredients, which is particularly useful for minor skin irritations that may occur during the tanning process.

[0014] Further, the vegetable oil of the present invention is selected from the mixture of white meadowfoam seed oil and jojoba seed oil. White meadowfoam seed oil can form a lasting protective layer on the skin surface, which can not only lock moisture and prevent dry skin, but also effectively resist the invasion of external moisture. Jojoba seed oil is similar to human sebum structure, and this similarity enables jojoba seed oil to be well integrated into the skin surface and form a protective layer. At the same time, since the wax ester molecules in jojoba seed oil are larger, the larger molecules help to form a relatively tight and stable barrier on the skin surface, effectively preventing water loss while also blocking the invasion of external moisture. Therefore, when the vegetable oil is selected from the mixture of white meadowfoam seed oil and jojoba seed oil, it helps to form a protective layer with high stability and water resistance on the skin, thereby significantly prolonging the durability of the tanning effect.

[0015] Furthermore, the mass ratio of the meadowfoam seed oil to the jojoba seed oil of the present invention is 1: 1. When the mass ratio of the meadowfoam seed oil to the jojoba seed oil is 1: 1, it can ensure that the protective layer formed is not only thick but also uniform, providing the most effective protection and making the tanning effect more lasting.

[0016] Accordingly, the second aspect of the present invention also provides a method for preparing a tanning oil aerosol, the steps comprising:

[0017] S1, mixing the formulated amounts of coconut oil, ethylhexyl palmitate, isononyl isononanoate and sunflower seed oil, and heating and stirring to prepare a first phase;

[0018] S2, cooling the first phase, adding the formulated amount of tocopherol acetate and homosalate, and stirring evenly to obtain the second phase;

[0019] S3, adding the formulated amount of olive oil, vegetable oil and squalane to the second phase, and stirring evenly to obtain the third phase;

[0020] S4, adding the soothing agent in the formula amount to the third phase, and stirring evenly to obtain a material body;

[0021] S5. Pour the material into an aerosol can, seal it with a valve, add a formulated amount of propellant, and then install a spray head to obtain a tanning oil aerosol.

[0022] Compared with the prior art, the present invention heats and mixes coconut oil, ethylhexyl palmitate, isononyl isononanoate, and sunflower seed oil in step S1 to form a uniform base oil phase, which facilitates the uniform addition of subsequent ingredients. Then, tocopherol acetate and homosalate are added after the first phase is cooled, which can effectively protect the activity of the two and ensure that they play the best effect in the product. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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.

[0024] The coconut oil used in the embodiments and comparative examples was purchased from Guangzhou Chunranzhimei Cosmetics Co., Ltd.; ethylhexyl palmitate was purchased from Shangnu Industrial (Shanghai) Co., Ltd.; homosalate was purchased from Wuhan Kemik Biomedical Technology Co., Ltd.; tocopherol acetate was purchased from Hubei Wande Chemical Co., Ltd.; olive oil was purchased from Guangzhou Runjin Biotechnology Co., Ltd.; isononyl isononanoate was purchased from Hubei Tosoh Chemical Technology Co., Ltd.; sunflower seed oil was purchased from Guangzhou Sixiantang Biotechnology Co., Ltd.; meadowfoam seed oil was purchased from Guangzhou Guanxiang Biotechnology Co., Ltd.; jojoba seed oil was purchased from Guangzhou Snoco Biotechnology Co., Ltd.; squalane was purchased from Guangzhou Tingkai Trading Co., Ltd.; and bisabolol was purchased from Macheng Jinxin Biotechnology Co., Ltd.

[0025] Example 1

[0026] The present embodiment provides a tanning oil aerosol, which includes, by mass, 33.119 parts of coconut oil, 32 parts of ethylhexyl palmitate, 3.2 parts of homosalate, 0.8 parts of tocopheryl acetate, 4 parts of olive oil, 2.4 parts of isononyl isononanoate, 4 parts of sunflower seed oil, 0.16 parts of meadowfoam seed oil, 0.16 parts of jojoba seed oil, 0.16 parts of squalane, 0.001 parts of bisabolol, and 20 parts of butane.

[0027] This embodiment provides a method for preparing a tanning oil aerosol, the steps comprising:

[0028] S1, mixing the formulated amounts of coconut oil, ethylhexyl palmitate, isononyl isononanoate and sunflower seed oil, and heating and stirring at 42° C. to prepare a first phase;

[0029] S2, cooling the first phase to 30° C., adding the formulated amount of tocopherol acetate and homosalate, and stirring evenly to obtain the second phase;

[0030] S3, adding the formulated amount of olive oil, meadowfoam seed oil, jojoba seed oil and squalane to the second phase, and stirring evenly to prepare the third phase;

[0031] S4, adding the formulated amount of bisabolol into the third phase, and stirring evenly to obtain a material body;

[0032] S5. Pour the material into an aerosol can, seal it with a valve, fill it with a formulated amount of butane, and then install a nozzle to obtain a tanning oil aerosol.

[0033] Example 2

[0034] The present embodiment provides a tanning oil aerosol, which includes, by mass, 28 parts of coconut oil, 36 parts of ethylhexyl palmitate, 3.6 parts of homosalate, 0.6 parts of tocopheryl acetate, 3 parts of olive oil, 2.3 parts of isononyl isononanoate, 3.3 parts of sunflower seed oil, 0.17 parts of meadowfoam seed oil, 0.17 parts of jojoba seed oil, 0.14 parts of squalane, 0.002 parts of bisabolol, and 26 parts of butane.

[0035] This embodiment provides a method for preparing a tanning oil aerosol, the steps comprising:

[0036] S1, mixing the formulated amounts of coconut oil, ethylhexyl palmitate, isononyl isononanoate and sunflower seed oil, and heating and stirring at 44° C. to prepare a first phase;

[0037] S2, cooling the first phase to 28° C., adding the formulated amount of tocopherol acetate and homosalate, and stirring evenly to obtain the second phase;

[0038] S3, adding the formulated amount of olive oil, meadowfoam seed oil, jojoba seed oil and squalane to the second phase, and stirring evenly to prepare the third phase;

[0039] S4, adding the formulated amount of bisabolol into the third phase, and stirring evenly to obtain a material body;

[0040] S5. Pour the material into an aerosol can, seal it with a valve, fill it with a formulated amount of butane, and then install a nozzle to obtain a tanning oil aerosol.

[0041] Example 3

[0042] The present embodiment provides a tanning oil aerosol, which includes, by mass, 34 parts of coconut oil, 33 parts of ethylhexyl palmitate, 3.1 parts of homosalate, 0.7 parts of tocopheryl acetate, 4 parts of olive oil, 2.6 parts of isononyl isononanoate, 4 parts of sunflower seed oil, 0.16 parts of meadowfoam seed oil, 0.16 parts of jojoba seed oil, 0.17 parts of squalane, 0.0015 parts of bisabolol, and 23 parts of butane.

[0043] This embodiment provides a method for preparing a tanning oil aerosol, the steps comprising:

[0044] S1, mixing the formulated amounts of coconut oil, ethylhexyl palmitate, isononyl isononanoate and sunflower seed oil, and heating and stirring at 45° C. to prepare a first phase;

[0045] S2, cooling the first phase to 25° C., adding the formulated amount of tocopherol acetate and homosalate, and stirring evenly to obtain the second phase;

[0046] S3, adding the formulated amount of olive oil, meadowfoam seed oil, jojoba seed oil and squalane to the second phase, and stirring evenly to prepare the third phase;

[0047] S4, adding the formulated amount of bisabolol into the third phase, and stirring evenly to obtain a material body;

[0048] S5. Pour the material into an aerosol can, seal it with a valve, fill it with a formulated amount of butane, and then install a nozzle to obtain a tanning oil aerosol.

[0049] Comparative Example 1

[0050] The comparative example provides a tanning oil aerosol, which includes, by mass, 15 parts of coconut oil, 32 parts of ethylhexyl palmitate, 3.2 parts of homosalate, 0.8 parts of tocopheryl acetate, 22.119 parts of olive fruit oil, 2.4 parts of isononyl isononanoate, 4 parts of sunflower seed oil, 0.16 parts of meadowfoam seed oil, 0.16 parts of jojoba seed oil, 0.16 parts of squalane, 0.001 parts of bisabolol, and 20 parts of butane.

[0051] This comparative example provides a method for preparing a tanning oil aerosol, the steps comprising:

[0052] S1, mixing the formulated amounts of coconut oil, ethylhexyl palmitate, isononyl isononanoate and sunflower seed oil, and heating and stirring at 42° C. to prepare a first phase;

[0053] S2, cooling the first phase to 30° C., adding the formulated amount of tocopherol acetate and homosalate, and stirring evenly to obtain the second phase;

[0054] S3, adding the formulated amount of olive oil, meadowfoam seed oil, jojoba seed oil and squalane to the second phase, and stirring evenly to prepare the third phase;

[0055] S4, adding the formulated amount of bisabolol into the third phase, and stirring evenly to obtain a material body;

[0056] S5. Pour the material into an aerosol can, seal it with a valve, fill it with a formulated amount of butane, and then install a nozzle to obtain a tanning oil aerosol.

[0057] Comparative Example 2

[0058] The comparative example provides a tanning oil aerosol, which includes, by mass, 33.119 parts of coconut oil, 13.881 parts of ethylhexyl palmitate, 3.2 parts of homosalate, 0.8 parts of tocopheryl acetate, 22.119 parts of olive fruit oil, 2.4 parts of isononyl isononanoate, 4 parts of sunflower seed oil, 0.16 parts of meadowfoam seed oil, 0.16 parts of jojoba seed oil, 0.16 parts of squalane, 0.001 parts of bisabolol, and 20 parts of butane.

[0059] This comparative example provides a method for preparing a tanning oil aerosol, the steps comprising:

[0060] S1, mixing the formulated amounts of coconut oil, ethylhexyl palmitate, isononyl isononanoate and sunflower seed oil, and heating and stirring at 42° C. to prepare a first phase;

[0061] S2, cooling the first phase to 30° C., adding the formulated amount of tocopherol acetate and homosalate, and stirring evenly to obtain the second phase;

[0062] S3, adding the formulated amount of olive oil, meadowfoam seed oil, jojoba seed oil and squalane to the second phase, and stirring evenly to prepare the third phase;

[0063] S4, adding the formulated amount of bisabolol into the third phase, and stirring evenly to obtain a material body;

[0064] S5. Pour the material into an aerosol can, seal it with a valve, fill it with a formulated amount of butane, and then install a nozzle to obtain a tanning oil aerosol.

[0065] Comparative Example 3

[0066] The present comparative example provides a tanning oil aerosol, which comprises, by mass, 33.119 parts of coconut oil, 32 parts of ethylhexyl palmitate, 0.8 parts of tocopheryl acetate, 4 parts of olive fruit oil, 2.4 parts of isononyl isononanoate, 4 parts of sunflower seed oil, 0.16 parts of meadowfoam seed oil, 0.16 parts of jojoba seed oil, 0.16 parts of squalane, 0.001 parts of bisabolol, and 20 parts of butane.

[0067] This comparative example provides a method for preparing a tanning oil aerosol, the steps comprising:

[0068] S1, mixing the formulated amounts of coconut oil, ethylhexyl palmitate, isononyl isononanoate and sunflower seed oil, and heating and stirring at 42° C. to prepare a first phase;

[0069] S2, cooling the first phase to 30° C., adding a formulated amount of tocopherol acetate, and stirring evenly to obtain a second phase;

[0070] S3, adding the formulated amount of olive oil, meadowfoam seed oil, jojoba seed oil and squalane to the second phase, and stirring evenly to prepare the third phase;

[0071] S4, adding the formulated amount of bisabolol into the third phase, and stirring evenly to obtain a material body;

[0072] S5. Pour the material into an aerosol can, seal it with a valve, fill it with a formulated amount of butane, and then install a nozzle to obtain a tanning oil aerosol.

[0073] Comparative Example 4

[0074] The present comparative example provides a tanning oil aerosol, which comprises, by mass, 33.119 parts of coconut oil, 32 parts of ethylhexyl palmitate, 3.2 parts of homosalate, 4 parts of olive fruit oil, 2.4 parts of isononyl isononanoate, 4 parts of sunflower seed oil, 0.16 parts of meadowfoam seed oil, 0.16 parts of jojoba seed oil, 0.16 parts of squalane, 0.001 parts of bisabolol, and 20 parts of butane.

[0075] This comparative example provides a method for preparing a tanning oil aerosol, the steps comprising:

[0076] S1, mixing the formulated amounts of coconut oil, ethylhexyl palmitate, isononyl isononanoate and sunflower seed oil, and heating and stirring at 42° C. to prepare a first phase;

[0077] S2, cooling the first phase to 30° C., adding a formulated amount of homosalate, and stirring evenly to obtain a second phase;

[0078] S3, adding the formulated amount of olive oil, meadowfoam seed oil, jojoba seed oil and squalane to the second phase, and stirring evenly to prepare the third phase;

[0079] S4, adding the formulated amount of bisabolol into the third phase, and stirring evenly to obtain a material body;

[0080] S5. Pour the material into an aerosol can, seal it with a valve, fill it with a formulated amount of butane, and then install a nozzle to obtain a tanning oil aerosol.

[0081] Comparative Example 5

[0082] The comparative example provides a tanning oil aerosol, which includes, by mass, 33.119 parts of coconut oil, 32 parts of ethylhexyl palmitate, 3.2 parts of homosalate, 0.8 parts of tocopheryl acetate, 4 parts of olive fruit oil, 2.4 parts of isononyl isononanoate, 4 parts of sunflower seed oil, 0.16 parts of meadowfoam seed oil, 0.16 parts of jojoba seed oil, 0.001 parts of bisabolol, and 20 parts of butane.

[0083] This comparative example provides a method for preparing a tanning oil aerosol, the steps comprising:

[0084] S1, mixing the formulated amounts of coconut oil, ethylhexyl palmitate, isononyl isononanoate and sunflower seed oil, and heating and stirring at 42° C. to prepare a first phase;

[0085] S2, cooling the first phase to 30° C., adding the formulated amount of tocopherol acetate and homosalate, and stirring evenly to obtain the second phase;

[0086] S3, adding the formulated amount of olive oil, meadowfoam seed oil and jojoba seed oil to the second phase, and stirring evenly to prepare the third phase;

[0087] S4, adding the formulated amount of bisabolol into the third phase, and stirring evenly to obtain a material body;

[0088] S5. Pour the material into an aerosol can, seal it with a valve, fill it with a formulated amount of butane, and then install a nozzle to obtain a tanning oil aerosol.

[0089] The naturalness, speed and safety of the tanning effects of the tanning oil aerosols of Examples 1 to 3 and Comparative Examples 1 to 5 were tested according to the following test methods. The test results are shown in Table 1.

[0090] 1. Test materials:

[0091] (1) the tanning oil aerosols of Examples 1 to 3 and Comparative Examples 1 to 5; (2) a timer; (3) an analytical balance; (4) an artificial ultraviolet tanning lamp; (5) a 25°C thermostat

[0092] 2. Test methods:

[0093] (1) Using a 25°C thermostat, keep the tanning oil aerosol at a constant temperature for 30 minutes;

[0094] (2) using an analytical balance to weigh the basis weight of the tanning oil aerosol and marking it;

[0095] (3) Wash the back of your left hand and let it dry naturally, then use a marker to draw four squares on the back of your left hand;

[0096] (4) Shake the product up and down to mix well, then use an analytical balance to weigh the weight of the four squares on the back of the hand after spraying equal amounts of the product and mark them;

[0097] (5) Expose the back of your left hand to an artificial ultraviolet light, record the start time, and use a timer to observe the color changes and feel of the skin on the back of your hand at 15 minutes, 30 minutes, and 60 minutes.

[0098] Table 1

[0099]

[0100] The durability of the tanning effect and the uniformity of skin color in the fading stage of the tanning oil aerosols of Examples 1 to 3 and Comparative Examples 4 to 5 were tested according to the following test method. The test results are shown in Table 2.

[0101] 1. Test materials:

[0102] (1) the tanning oil aerosols of Examples 1 to 3 and Comparative Examples 4 to 5; (2) a timer; (3) an analytical balance; (4) an artificial ultraviolet tanning lamp; (5) a 25°C thermostat

[0103] 2. Test methods:

[0104] (1) Using a 25°C thermostat, keep the tanning oil aerosol at a constant temperature for 30 minutes;

[0105] (2) using an analytical balance to weigh the basis weight of the tanning oil aerosol and marking it;

[0106] (3) Wash the back of your left hand and let it dry naturally, then use a marker to draw four squares on the back of your left hand;

[0107] (4) Shake the product up and down to mix well, then use an analytical balance to weigh the weight of the four squares on the back of the hand after spraying equal amounts of the product and mark them;

[0108] (5) After irradiating the back of the left hand with an artificial ultraviolet light for 60 minutes, the skin color changes and conditions were immediately recorded and photographed for archiving;

[0109] (6) Volunteers should carry out daily activities (such as walking, working, etc.) and record the changes in skin color and condition for 2, 4, 5, and 6 weeks and take photos for archiving. They should also record any abnormal sensations (such as dryness, redness, discomfort, etc.).

[0110] Table 2

[0111]

[0112]

[0113] As can be seen from Table 1, the tanning oil aerosols of Examples 1 to 3 can achieve a natural, safe and long-lasting tanning effect, and also ensure that the skin color is uniform, natural and non-irritating in the fading stage after discontinuation of use. This is because the present invention can accelerate the speed of tanning and achieve a natural, safe and long-lasting tanning effect by optimizing the ratio of coconut oil and ethylhexyl palmitate, and combining the effects of homosalate, vegetable oil and squalane. It also ensures that the skin color is uniform, natural and non-irritating in the fading stage after discontinuation of use by combining tocopherol acetate, olive oil, sunflower seed oil and a soothing agent.

[0114] Comparing Example 1 with Comparative Examples 1 to 2, it can be seen that if the content of coconut oil is not within 25 to 35 parts or the content of ethylhexyl palmitate is not within 30 to 40 parts, it will affect the speed of tanning or the safety of tanning; this is because coconut oil is rich in medium-chain fatty acids, which can penetrate into the deep layers of the skin, promote the activity of melanocytes, and thus accelerate the production of melanin; and coconut oil also has excellent moisturizing properties, maintains the moisture balance of the skin, ensures skin health, and ensures the safety of the tanning process. Ethylhexyl palmitate has moderate light transmittance, allowing an appropriate amount of UVA to penetrate the skin surface and reach the deep layers of the skin. An appropriate amount of UVA penetration can stimulate melanocytes to produce more melanin; in addition, ethylhexyl palmitate is an efficient skin penetration enhancer, which can help other active ingredients to be better absorbed by the skin, thereby improving UV absorption efficiency; these two cooperate with each other in a certain proportion, not only stimulating melanocytes to produce melanin, but also improving UV absorption efficiency, thereby accelerating the speed of tanning and achieving a natural and safe tanning effect.

[0115] By comparing Example 1 with Comparative Example 3, it can be seen that removing homosalate will also affect the safety of tanning. This is because homosalate, as a UVB absorber, provides necessary UVB protection, avoids the risk of sunburn and overexposure, and further ensures the safety and comfort of the tanning process.

[0116] By comparing Example 1 and Comparative Example 4, it can be seen that the removal of tocopherol acetate will affect the uniformity of fading. This is because tocopherol acetate can reduce the damage of free radicals to skin cells and slow down the skin aging process, which not only helps to maintain skin health, but also prevents abnormal pigmentation caused by oxidation, thereby avoiding obvious yellow tone changes during the fading process.

[0117] By comparing Example 1 with Comparative Example 5, it can be seen that the removal of squalane will affect the durability of tanning. This is because vegetable oil and squalane can form a stable protective layer on the skin, which is highly stable and waterproof and is not easily washed off by water or lost due to sweating, so that the tanning effect can last for more than 30 days, significantly extending the durability of the tanning effect.

[0118] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A tanning oil aerosol, characterized in that: In terms of mass, it includes 25 to 35 parts of coconut oil, 30 to 40 parts of ethylhexyl palmitate, 3 to 4 parts of homosalate, 0.5 to 1 part of tocopheryl acetate, 2 to 4 parts of olive oil, 2 to 3 parts of isononyl isononanoate, 2 to 4 parts of sunflower seed oil, 0.2 to 0.4 part of vegetable oil, 0.1 to 0.2 part of squalane, 0.001 to 0.005 part of a soothing agent, and 20 to 30 parts of a propellant.

2. The tanning oil aerosol according to claim 1, characterized in that It includes 30 to 35 parts of coconut oil, 30 to 35 parts of ethylhexyl palmitate, 3 to 3.5 parts of homosalate, 0.7 to 1 part of tocopheryl acetate, 3 to 4 parts of olive oil, 2 to 2.6 parts of isononyl isononanoate, 3 to 4 parts of sunflower seed oil, 0.3 to 0.4 parts of vegetable oil, 0.12 to 0.18 parts of squalane, 0.001 to 0.003 parts of soothing agent, and 20 to 25 parts of propellant.

3. The tanning oil aerosol according to claim 1, characterized in that: It includes 31 to 34 parts of coconut oil, 31 to 33 parts of ethylhexyl palmitate, 3.1 to 3.3 parts of homosalate, 0.7 to 0.9 parts of tocopheryl acetate, 3.5 to 4 parts of olive oil, 2.2 to 2.6 parts of isononyl isononanoate, 3.6 to 4 parts of sunflower seed oil, 0.3 to 0.35 parts of vegetable oil, 0.14 to 0.18 parts of squalane, 0.001 to 0.002 parts of soothing agent, and 20 to 23 parts of propellant.

4. The tanning oil aerosol according to any one of claims 1 to 3, characterized in that The propellant is butane.

5. The tanning oil aerosol according to any one of claims 1 to 3, characterized in that: The soothing agent is bisabolol.

6. The tanning oil aerosol according to any one of claims 1 to 3, characterized in that The vegetable oil is selected from a mixture of meadowfoam seed oil and jojoba seed oil.

7. The tanning oil aerosol according to claim 6, characterized in that The mass ratio of the meadowfoam seed oil to the jojoba seed oil is 1:

1.

8. The method for preparing the tanning oil aerosol according to any one of claims 1 to 7, characterized in that: Steps include: S1, mixing the formulated amounts of coconut oil, ethylhexyl palmitate, isononyl isononanoate and sunflower seed oil, and heating and stirring to prepare a first phase; S2, cooling the first phase, adding a formulated amount of tocopherol acetate and homosalate, and stirring evenly to obtain a second phase; S3, adding the formulated amount of olive oil, vegetable oil and squalane to the second phase, and stirring evenly to obtain the third phase; S4, adding a formulated amount of a soothing agent into the third phase, and stirring evenly to obtain a material body; S5, pouring the material into an aerosol can, sealing it with a valve, filling it with a formulated amount of propellant, and then installing a spray head to obtain a tanning oil aerosol.

9. The method for preparing the tanning oil aerosol according to claim 8, characterized in that: The heating temperature in step S1 is 40-50°C.

10. The method for preparing the tanning oil aerosol according to claim 8, characterized in that: Step S2 includes cooling the first phase to 36° C. or below.

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