Plant sunscreen repair composition suitable for sensitive skin and application thereof

Abstract

The invention discloses a plant sunscreen repairing composition suitable for sensitive skin and application thereof, and belongs to the technical field of cosmetics. The plant sunscreen repair composition provided by the invention is prepared from a herba cistanche extract, a Chinese rose flower extract, a cortex phellodendri extract, a cortex eucommiae extract and a cryptomeria fortunei bud extract. By selecting appropriate types of plant extracts for compounding, UVA and UVB can be effectively absorbed, and the skin temperature can be effectively reduced; in addition, the plant sunscreen repair composition provided by the invention also has good effects of relieving skin irritation after sunburn and repairing a skin barrier after sunburn; the method can be widely applied to preparation of sunscreen products.

Description

Technical Field

[0001] The invention belongs to the technical field of cosmetics, and in particular relates to a plant sunscreen and repairing composition suitable for sensitive skin and an application thereof. Background Art

[0002] Sunscreen products achieve the purpose of reducing UV damage to the skin by adding sunscreens that reflect or absorb UV radiation. Sunscreen products add a large amount of physical sunscreens and chemical sunscreens to achieve adequate sunscreen effects. However, some small molecular weight sunscreens can penetrate deep into the skin and cause varying degrees of damage to the skin. At present, there have been some reports that use some plant-based sunscreen ingredients to reduce the content of sunscreens and reduce the irritation and other damage to the skin caused by sunscreen products.

[0003] At present, the research on sunscreen products mainly focuses on reducing its irritation and enhancing its skin feel, but there are few studies on the effects of increased skin temperature after using sunscreen products. After the skin is exposed to ultraviolet rays for a long time, the skin will heat up, and then the skin temperature will rise. The film-forming agent in the sunscreen product will make the skin heat dissipation effect poor. If the skin is not cooled in time, the skin will become red, and as the temperature rises, the skin pores will also increase, the skin will gradually lose elasticity and become prone to aging; in addition, the continuous high temperature will also cause the skin to sweat, and sweat will also reduce the sunscreen effect of the sunscreen product.

[0004] Currently, products on the market that can lower skin temperature mainly achieve this by adding mint ingredients or alcohol. Alcohol is highly irritating and is not suitable for people with sensitive skin. Mints cool the skin by stimulating the heat response receptor TRPM8, which gives the brain an illusion of cooling, but the actual skin temperature does not decrease. Therefore, some ingredients that can lower skin temperature can be added to sunscreen products to reduce the damage to the skin caused by the increase in temperature. Summary of the invention

[0005] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a plant sunscreen repair composition suitable for sensitive skin with excellent ultraviolet absorption effect, which can reduce skin temperature, relieve skin irritation after sun exposure and repair skin barrier function and its application.

[0006] To achieve the above objectives, in a first aspect of the present invention, the present invention provides a plant sunscreen repair composition suitable for sensitive skin, wherein the plant sunscreen repair composition comprises the following components: Cistanche deserticola extract, Rosa chinensis extract, Phellodendron amurense bark extract, Eucommia ulmoides bark extract, and Cryptomeria fortunei bud extract.

[0007] The present invention selects suitable types of plant extracts for compounding, and finds that the components have good synergistic effects, can effectively absorb UVA and UVB, and can effectively reduce skin temperature; in addition, the plant sunscreen repair composition provided by the present invention also has good effects of alleviating post-sun skin irritation and repairing post-sun skin barrier.

[0008] Specifically, the Cistanche extract has the effects of whitening, anti-aging, moisturizing, anti-inflammatory, antibacterial, promoting skin metabolism, improving skin microcirculation, etc. At the same time, the present invention has found that the Cistanche extract contains phenylethanol total glycosides, which itself has excellent absorption of UVA and UVB. When it is subsequently applied to sunscreen products, it can effectively enhance the effects of physical sunscreens and chemical sunscreens. The rose extract has multiple effects, including anti-oxidation, anti-bacterial, anti-inflammatory, moisturizing and locking water, improving skin texture, etc. At the same time, the present invention has found that it can also effectively absorb UVB, and further can interact with the Cistanche extract to jointly enhance the sunscreen effect of physical sunscreens and chemical sunscreens in subsequent sunscreen products. The Phellodendron bark extract has the effects of clearing away heat and detoxification, detumescence and rot, anti-oxidation and anti-aging, antibacterial and antiviral, and at the same time, the present invention has found that it can also effectively reduce the heat generated in the skin and on the skin surface, and alleviate the temperature rise caused by the skin under ultraviolet or visible light irradiation, or the temperature rise caused by endogenous. Eucommia bark extract can increase skin elasticity, protect skin mucosa, even skin tone, make skin more tender, smooth and translucent, and can also fade spots and melanin, playing a whitening role. At the same time, the present invention has found that it can reduce the expression of PGE2, a key molecule for temperature regulation, thereby reducing abnormal acceleration of blood flow and thus reducing skin temperature; therefore, it can further enhance the efficacy of Phellodendron bark extract in reducing skin temperature, achieving an excellent cooling effect. Cryptomeria fortunei bud extract can stimulate the regeneration of skin cells, accelerate epidermal renewal, and improve barrier function. By adding it to the system, it can work together with other components to effectively relieve post-sun irritation and repair post-sun skin barrier.

[0009] As a preferred embodiment of the plant sunscreen repair composition of the present invention, the plant sunscreen repair composition includes the following components in parts by weight: 3-7 parts of Cistanche deserticola extract, 0.5-2 parts of Rose Chinensis Extract, 0.2-0.8 parts of Phellodendron Amurense Bark Extract, 1-5 parts of Eucommia Bark Extract, and 0.5-2 parts of Cryptomeria fortunei bud extract.

[0010] Exemplarily, the Cistanche deserticola extract can be any point value or any two-point range value between 3-7 parts, such as 3 parts, 4 parts, 5 parts, 6 parts, 7 parts, etc.; the Rosa Chinensis extract can be any point value or any two-point range value between 0.5-2 parts, such as 0.5 parts, 1 parts, 1.5 parts, 2 parts, etc.; the Phellodendron chinense bark extract can be any point value or any two-point range value between 0.2-0.8 parts, such as 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 0.6 parts, 0.7 parts, 0.8 parts, etc.; the Eucommia ulmoides bark can be any point value or any two-point range value between 1-5 parts, such as 1 part, 2 parts, 3 parts, 4 parts, 5 parts, etc.; the Cryptomeria fortunei bud extract can be any point value or any two-point range value between 0.5-2 parts, such as 0.5 parts, 1 parts, 1.5 parts, 2 parts, etc.

[0011] As a preferred embodiment of the plant sunscreen repair composition of the present invention, the plant sunscreen repair composition includes the following components in parts by weight: 4-5 parts of Cistanche deserticola extract, 1-1.5 parts of Rosa Chinensis extract, 0.5-0.6 parts of Phellodendron amurense bark extract, 2-4 parts of Eucommia ulmoides bark extract, and 1-1.4 parts of Cryptomeria fortunei bud extract.

[0012] The present invention has found that the mass parts of the components in the plant sunscreen repair composition will affect the interaction between the components. When the mass parts of the components are further selected to be within the range given by the present invention, the obtained product not only has a better ultraviolet absorption effect, but also has a better effect of reducing the temperature of the skin. When it is subsequently used in the preparation of sunscreen products, the obtained sunscreen products not only have good sun protection capabilities, but also have excellent effects of relieving post-sun irritation and repairing the skin barrier after sun exposure.

[0013] As a preferred embodiment of the plant sunscreen repair composition of the present invention, the mass percentage of the sum of the mass of the Phellodendron amurense bark extract and the Eucommia ulmoides bark extract in the plant sunscreen repair composition is 25-40%.

[0014] Exemplarily, the mass percentage of the sum of the masses of the Phellodendron chinense bark extract and the Eucommia ulmoides bark extract in the plant sunscreen repair composition can be any point value or any two point range values ​​between 25-40%, for example, it can be 25%, 28%, 30%, 32%, 34%, 36%, 38%, 40%, etc.

[0015] The present invention has found that when the mass percentage of the sum of the mass of the Phellodendron bark extract and the Eucommia bark extract in the total mass of the plant sunscreen repair composition is further limited to 25-40%, the comprehensive effect of the obtained product is more excellent.

[0016] As a preferred embodiment of the plant sunscreen repair composition of the present invention, the mass percentage of the Cryptomeria fortunei bud extract in the plant sunscreen repair composition is 10-13%.

[0017] Exemplarily, the mass percentage of the Cryptomeria fortunei bud extract in the plant sunscreen repair composition can be any point value or any two point range values ​​between 10-13%, such as 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, etc.

[0018] The present invention has found that when the mass percentage of the Cryptomeria fortunei bud extract to the total mass of the plant sunscreen repair composition is further limited to 10-13%, the comprehensive effect of the obtained product is more excellent.

[0019] As a preferred embodiment of the plant sunscreen repair composition of the present invention, the preparation method of the Cistanche extract comprises the following steps: adding Cistanche to an ethanol aqueous solution for reflux extraction, collecting the filtrate after the extraction is completed, concentrating and drying, and obtaining the Cistanche extract.

[0020] Preferably, the mass percentage of ethanol in the ethanol aqueous solution is 30-50%.

[0021] Preferably, the mass ratio of Cistanche deserticola to ethanol aqueous solution is 1:(15-25).

[0022] Preferably, the number of reflux extractions is 1-3 times, and the time for a single extraction is 0.5-1.5 h.

[0023] As a preferred embodiment of the plant sunscreen repair composition of the present invention, the preparation method of the rose extract comprises the following steps: adding roses to a mixed solution of sodium bicarbonate aqueous solution and anhydrous ethanol for immersion, followed by filtering and concentrating to obtain the rose extract.

[0024] Preferably, in the method for preparing the rose extract, the volume ratio of the sodium bicarbonate aqueous solution to anhydrous ethanol is 1:(1.5-2.5).

[0025] Preferably, the mass percentage of sodium bicarbonate in the sodium bicarbonate aqueous solution is 0.5-1.5%.

[0026] Preferably, in the preparation method of the rose extract, the immersion temperature is 45-55° C., and the immersion time is 20-28 h.

[0027] As a preferred embodiment of the plant sunscreen repair composition of the present invention, the preparation method of the Phellodendron bark extract includes the following steps: adding Phellodendron bark to water for heating extraction, filtering after the extraction is completed, collecting and concentrating the filtrate to obtain the Phellodendron bark extract.

[0028] Preferably, the cortex phellodendri is dried and crushed before being added into water, and passed through a 60-mesh sieve.

[0029] Preferably, the mass volume ratio of Phellodendron chinense bark to water is 1 g: (10-20) mL.

[0030] Preferably, the extract is heated twice, the temperature of the heating extraction is 90-100° C., and the time of a single heating extraction is 0.5-1.5 h.

[0031] As a preferred embodiment of the plant sunscreen repair composition of the present invention, the preparation method of the Eucommia bark extract comprises the following steps: adding the Eucommia bark to an ethanol aqueous solution for heating extraction, followed by filtering, collecting and concentrating the filtrate to obtain the Eucommia bark extract.

[0032] Preferably, the mass percentage of ethanol in the ethanol aqueous solution is 40-60%.

[0033] Preferably, the mass ratio of Eucommia bark to ethanol aqueous solution is 1:(4-6).

[0034] Preferably, the temperature of the heating extraction is 45-55°C and the time is 20-28 hours.

[0035] In the second aspect of the present invention, the present invention provides the use of the plant sunscreen repair composition in the preparation of sunscreen products.

[0036] The plant sunscreen repair composition provided by the present invention has an excellent effect of lowering skin temperature on the basis of good absorption of UVA and UVB; at the same time, the plant sunscreen repair composition provided by the present invention also has a good effect of alleviating skin irritation after sun exposure and repairing the skin barrier after sun exposure; therefore, it can be added into the preparation of sunscreen products as an effective ingredient, which can reduce the amount of physical sunscreens and chemical sunscreens added in the initial sunscreen products to a certain extent, reduce the irritation of the physical sunscreens and chemical sunscreens to the skin, and expand the applicable population range of the sunscreen products; at the same time, because it can also alleviate the problem of increased skin temperature and inability to effectively dissipate heat due to the addition of film-forming agents in sunscreen products, that is, it has a good user experience and can avoid damage to the skin caused by increased temperature.

[0037] In the third aspect of the present invention, the present invention provides a sunscreen lotion, which includes the following components in mass percentage: the sunscreen lotion includes the following components in mass percentage: 5-12% of the plant sunscreen repair composition of the present invention, 5-7% of physical sunscreen, 10-15% of chemical sunscreen, 10-15% of emollient, 2-3% of film former, 5-12% of moisturizer, 0.1-0.5% of thickener, 0.5-2% of preservative, 1-5% of emulsifier, and the balance is water.

[0038] The sunscreen lotion provided by the present invention can effectively enhance the efficacy of physical sunscreens and chemical sunscreens by adding the plant sunscreen repair composition of the present invention, and can also avoid the problem of poor skin heat dissipation caused by the addition of film-forming agents; the obtained sunscreen lotion has a good sunscreen effect and can also reduce skin temperature to solve the damage to the skin caused by increased temperature, and can also effectively repair the skin after sun exposure and relieve skin irritation after sun exposure.

[0039] Preferably, the emollient includes at least one of dicaprylyl carbonate and diisopropyl sebacate.

[0040] Preferably, the film-forming agent includes at least one of trimethylsiloxysilicate and cyclopentasiloxane.

[0041] Preferably, the moisturizing agent includes at least one of glycerol, 1,3-butylene glycol, and 1,2-pentanediol.

[0042] Preferably, the thickener includes at least one of xanthan gum, carbomer and sodium polyacrylate.

[0043] Preferably, the preservative includes at least one of p-hydroxyacetophenone and hexylene glycol.

[0044] Preferably, the emulsifier includes at least one of polyglyceryl-10 oleate, polysorbate 60, and polyglyceryl-3 diisostearate.

[0045] Preferably, the physical sunscreen comprises at least one of zinc oxide and titanium dioxide.

[0046] Preferably, the chemical sunscreen includes at least one of diethylaminohydroxybenzoyl hexyl benzoate, bis-ethylhexyloxyphenol methoxyphenyl triazine, ethylhexyl triazone, and ethylhexyl methoxycinnamate.

[0047] Compared with the prior art, the present invention has the following beneficial effects:

[0048] The present invention can effectively absorb UVA and UVB and effectively reduce skin temperature by selecting suitable types of plant extracts for compounding; in addition, the plant sunscreen repair composition provided by the present invention also has good effects of alleviating skin irritation after sun exposure and repairing the skin barrier after sun exposure; it can be widely used in the preparation of sunscreen products and is friendly to sensitive skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a before and after comparison of volunteers using the sunscreen lotion in the blank application example in effect example 2;

[0050] Figure 2 This is a before and after comparison of volunteers using the sunscreen lotion in Application Example 1 in Effect Example 2. DETAILED DESCRIPTION

[0051] In order to better illustrate the purpose, technical solutions and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments.

[0052] Unless otherwise specified, the reagents, methods and equipment used in the present invention are all conventional reagents, methods and equipment in the art; and unless otherwise specified, the raw materials used in parallel experiments are from the same batch of raw materials.

[0053] Cistanche deserticola extract 1: Homemade, the preparation method includes the following steps:

[0054] Take commercially available Cistanche deserticola medicinal material, add 20 times the mass of 40% ethanol aqueous solution to reflux extraction, extract twice, each extraction for 1 hour, after the two extractions are completed, combine the extracts, concentrate under reduced pressure and then dry at 60°C to obtain Cistanche deserticola extract 1;

[0055] Cistanche deserticola extract 2: Homemade, the preparation method includes the following steps:

[0056] Take commercially available Cistanche deserticola medicinal material, add 20 times the weight of water to reflux extraction, extract twice, each extraction is 1 hour, after the two extractions are completed, combine the extracts, concentrate under reduced pressure and then dry at 60°C to obtain Cistanche deserticola extract 2;

[0057] Rose extract 1: Homemade, the preparation method includes the following steps:

[0058] Take commercially available dried roses, crush them, add an extraction solvent (a mixed solution of 1% NaHCO3 and anhydrous ethanol in a volume ratio of 1:2) according to a solid-liquid ratio of 1 g:20 mL, stand at 50°C for extraction for 24 hours, then filter, collect and concentrate the filtrate to obtain rose extract 1;

[0059] Rose extract 2: Homemade, the preparation method includes the following steps:

[0060] Take commercially available dried roses, crush them, add an extraction solvent (a mixed solution of 2% NaHCO3 and anhydrous ethanol in a volume ratio of 1:4) according to a solid-liquid ratio of 1 g: 20 mL, stand at 50°C for 24 hours, then filter, collect and concentrate the filtrate to obtain rose extract 2;

[0061] Rose extract 3: Homemade, the preparation method includes the following steps:

[0062] Take commercially available dried roses, crush them, add 60% ethanol aqueous solution at a solid-liquid ratio of 1 g: 20 mL, stand at 50°C for extraction for 24 hours, then filter, collect and concentrate the filtrate to obtain rose extract 3;

[0063] Phellodendron chinense bark extract 1: Homemade, the preparation method includes the following steps:

[0064] Take commercially available Phellodendron bark medicinal material, dry to constant weight, crush, pass through a 60-mesh sieve, add deionized water at a ratio of 1 g: 15 mL, extract at 95°C for 1 hour, filter and collect the supernatant, add deionized water to the residue at a ratio of 1 g: 15 mL, extract at 95°C for 30 minutes, filter and collect the supernatant, combine the two supernatants and concentrate to obtain Phellodendron bark extract 1;

[0065] Phellodendron chinense bark extract 2: Homemade, the preparation method includes the following steps:

[0066] Take commercially available Phellodendron bark medicinal material, dry to constant weight, crush, pass through a 60-mesh sieve, add anhydrous ethanol at a ratio of 1 g: 15 mL, reflux extraction for 30 min, filter and collect the supernatant, add anhydrous ethanol to the residue at a ratio of 1 g: 15 mL, reflux extraction for 15 min, filter and collect the supernatant, combine the two supernatants and concentrate to obtain Phellodendron bark extract 2;

[0067] Eucommia bark extract 1: Homemade, the preparation method includes the following steps:

[0068] Take commercially available Eucommia bark, dry and crush it, add 5 times the mass of 50% ethanol solution, stir at 50°C for 24 hours, then filter, collect the filtrate and concentrate it at 60°C to obtain Eucommia bark extract 1;

[0069] Eucommia bark extract 2: Homemade, the preparation method includes the following steps:

[0070] Take commercially available Eucommia bark, dry and crush it, add 5 times the mass of anhydrous ethanol, stir at 50°C for 24 hours, then filter, collect the filtrate and concentrate it at 60°C to obtain Eucommia bark extract 2;

[0071] Cryptomeria fortunei bud extract: Xi'an Ruilin Biotechnology Co., Ltd.

[0072] Examples 1-5 and Comparative Examples 1-5

[0073] The embodiments and comparative examples of the present invention provide a plant sunscreen repair composition, and the components (parts by weight) of the plant sunscreen repair composition are shown in Table 1;

[0074] Table 1

[0075]

[0076]

[0077] The preparation method of the plant sunscreen repair composition provided in Example 1 comprises the following steps: mixing the components evenly to obtain the plant sunscreen repair composition.

[0078] The preparation methods of the plant sunscreen repair compositions provided in Examples 2-5 and Comparative Examples 1-5 are consistent with that in Example 1.

[0079] Example 6

[0080] The embodiment of the present invention provides a plant sunscreen repair composition, and the only difference between the plant sunscreen repair composition and embodiment 1 is that the Cistanche deserticola extract 2 is used to replace the Cistanche deserticola extract 1.

[0081] Example 7

[0082] The embodiment of the present invention provides a plant sunscreen repair composition, and the only difference between the plant sunscreen repair composition and embodiment 1 is that rose extract 2 is used instead of rose extract 1.

[0083] Example 8

[0084] The embodiment of the present invention provides a plant sunscreen repair composition, and the only difference between the plant sunscreen repair composition and embodiment 1 is that rose extract 3 is used instead of rose extract 1.

[0085] Example 9

[0086] The embodiment of the present invention provides a plant sunscreen repair composition, the only difference between the plant sunscreen repair composition and embodiment 1 is that the Phellodendron bark extract 2 is used to replace the Phellodendron bark extract 1.

[0087] Example 10

[0088] The embodiment of the present invention provides a plant sunscreen repair composition, and the only difference between the plant sunscreen repair composition and embodiment 1 is that the Eucommia bark extract 2 is used to replace the Eucommia bark extract 1.

[0089] Comparative Example 6

[0090] The comparative example of the present invention provides a plant sunscreen repair composition, and the only difference between the plant sunscreen repair composition and Example 1 is that the Scutellaria baicalensis extract is used to replace the Cistanche deserticola extract 1.

[0091] Comparative Example 7

[0092] The comparative example of the present invention provides a plant sunscreen repair composition, and the only difference between the plant sunscreen repair composition and Example 1 is that the rose extract is used to replace the rose extract 1.

[0093] Comparative Example 8

[0094] The comparative example of the present invention provides a plant sunscreen repair composition, the only difference between the plant sunscreen repair composition and Example 1 is that the Lespedeza bicolor extract is used to replace the Phellodendron amurense bark extract 1.

[0095] Comparative Example 9

[0096] The comparative example of the present invention provides a plant sunscreen repair composition, the only difference between the plant sunscreen repair composition and Example 1 is that the Eucommia bark extract 1 is replaced by the Eucommia extract.

[0097] Comparative Example 10

[0098] The comparative example of the present invention provides a plant sunscreen repair composition, the only difference between the plant sunscreen repair composition and Example 1 is that the Cryptomeria fortunei leaf extract is used instead of the Cryptomeria fortunei bud extract.

[0099] Application examples 1-11, comparative application examples 1-10 and blank application examples

[0100] The application examples of the present invention provide a sunscreen lotion, the components (mass percentage) of the sunscreen lotion are shown in Table 2; wherein the plant sunscreen repair compositions in application examples 1-10 correspond to the plant sunscreen repair compositions prepared in embodiments 1-10, respectively, the plant sunscreen repair compositions in comparative application examples 1-10 correspond to the plant sunscreen repair compositions prepared in comparative examples 1-10, respectively, and the plant sunscreen repair composition in application example 11 is the plant sunscreen repair composition prepared in embodiment 1;

[0101] Table 2

[0102]

[0103]

[0104] The method for preparing the sunscreen lotion provided in Application Example 1 comprises the following steps:

[0105] The chemical sunscreen and emulsifier are mixed and heated to 80-90°C for homogenization, and then cooled to 40-50°C. Subsequently, a film former, an emollient and a physical sunscreen are added to homogenize into a uniform oil phase. Subsequently, a moisturizer, a thickener and water are added at 20-30°C for emulsification. After the emulsification is completed, a plant sunscreen repair composition and a preservative are added and stirred to obtain a sunscreen lotion.

[0106] The preparation methods of the sunscreen lotions provided in Application Examples 1-11, Comparative Application Examples 1-10 and Blank Application Examples are consistent with those in Application Example 1.

[0107] Effect Example 1

[0108] Effect Example of the Invention The ultraviolet absorption ability of the plant sunscreen repair composition prepared in Examples 1-10 and Comparative Examples 1-10 is explored, specifically comprising the following steps:

[0109] Take 1g of the plant sunscreen repair composition and evenly apply it on 3M tape, place it in a 37℃ constant temperature box for 20min, take it out and stick it on the light-transmitting side of a quartz cuvette, and use a UV spectrophotometer to detect the UV absorption value in the 280-400nm band. Obtain a UV absorption value every 10nm UV wavelength. The UV absorption value of a certain band is the arithmetic average UV absorption value of each point in the band. The results are shown in Table 3;

[0110] Table 3

[0111]

[0112]

[0113] It can be seen from Table 1 that when the technical solution provided by the present invention is adopted, the obtained plant sunscreen repair composition has a good absorption effect on ultraviolet rays, wherein the absorbance for UVA is above 1.129, and the absorbance for UVB is above 1.638;

[0114] It can be seen from Example 1 and Comparative Examples 1-5 that the components in the composition provided by the present invention have excellent synergistic effects. When any one of them is missing, the effect of the obtained product is significantly reduced. It can be seen from Example 1 and Comparative Examples 6-10 that when other similar extracts are used as substitutes, the effect of the present invention cannot be achieved.

[0115] It can be seen from Examples 1-5 that the mass parts of the components in the plant sunscreen repair composition provided by the present invention will also affect the comprehensive effect of the product. When the mass parts of the components are further selected within the preferred range given by the present invention, the absorbance of the obtained product to UVA is above 1.321, and the absorbance to UVB is above 2.011; It can be seen from Examples 1 and 6-10 that the extraction method of the extract of the present invention will also affect the ultraviolet absorption effect of the product.

[0116] Effect Example 2

[0117] The effects of the present invention are as follows: The performance of the sunscreen lotions prepared by application examples 1-11, comparative application examples 1-10 and blank application examples is investigated, specifically including the following aspects:

[0118] 1. SPF value test

[0119] The test was conducted in accordance with the requirements of the "Technical Specifications for Safety of Cosmetics" (2015 edition). 110 volunteers aged 32 to 60 were selected and divided into 22 groups, with 5 people in each group. The minimum erythema dose (MED) of the subjects' skin to ultraviolet radiation was predicted and the ultraviolet radiation dose was adjusted. A spot no less than 30 cm was selected on the back of the subject. 2Normal skin area, (2.00±0.05)mg / cm 2 The test object is evenly applied to the above area with the dosage of 1000ml, and then the irradiation dose is selected according to the specification requirements, and irradiation is carried out in three cases: ① The test object is not applied to the subject's skin; ② The control product is applied (SPF value 16.1±2.4, prepared according to the standard formula of high SPF standard product P2 in the 2015 edition of the "Technical Specifications for Safety of Cosmetics"); ③ The test object is applied. Observe the experimental results after 24 hours, and record the MED values ​​in the three cases respectively;

[0120] SPF value calculation method: The SPF value of the test object or blank control protecting a single subject is expressed as follows:

[0121] SPFi = MED value of protected skin / MED value of unprotected skin;

[0122] Calculate the arithmetic mean of the SPF values ​​of all subjects protected by the tested object, and keep one decimal place; the results are shown in Table 4.

[0123] 2. Skin cooling and TEWL and a* value improvement test

[0124] Select a number of volunteers aged 18-45 who have been exposed to ultraviolet light. No skin care products were applied on the day of the visit. After washing their faces, the subjects sat quietly in a constant temperature and humidity room at 21±1℃ and 50±10% for 30 minutes. Use Visia-7 to take facial photos, perform image analysis on the exported red zone images, and obtain the a* value; use the skin transepidermal water loss probe to measure the skin's transepidermal water loss. TM Hex (Courage+Khazaka) tests the initial facial TEWL value. Then let the volunteers be exposed to direct sunlight outdoors for 20 minutes, use a surface temperature thermometer to test the facial temperature of the volunteers, and randomly divide the subjects into 22 groups, 5 people in each group, and randomly use the sunscreen lotion provided by the present invention (corresponding to the sunscreen lotion of application examples 1-11, comparative application examples 1-10 and blank application examples of the present invention) on the whole face. After 10 minutes, the facial temperature is tested again, and the temperature reduction value after use compared with that before use is calculated, and the calculation results are averaged;

[0125] According to the above grouping, the subjects were asked to use the sunscreen lotion provided by the present invention every day, and TEWL test and Visia-7 photography were performed on the 7th and 14th days, and the improvement of TEWL and a* value of each volunteer on the 0th, 7th and 14th days was analyzed. The improvement was represented by the improvement rate of each value, and the calculation method was as follows:

[0126] Improvement rate relative to the initial value = |(X 使用后 -X 使用前 ) / X 使用前 ×100%|; The calculated data are shown in Table 4;

[0127] Table 4

[0128]

[0129]

[0130] It can be seen from Table 4 that when the technical solution provided by the present invention is adopted, the obtained sunscreen lotion has excellent comprehensive effects, specifically, good sunscreen effect, cooling effect, and skin irritation relief and skin barrier repair effect, wherein the SPF value is above 42.0, the temperature reduction value is above 1.1, the improvement rate of TEWL on the 14th day is above 11.47%, and the improvement rate of a* value is above 13.44;

[0131] It can be seen from Application Example 1 and Comparative Application Examples 1-5 that the components in the plant sunscreen repair composition provided by the present invention have excellent synergistic effects. When any one of them is missing, the effect of the sunscreen lotion prepared using the same is significantly reduced. It can be seen from Application Example 1 and Comparative Application Examples 6-10 that when other similar extracts are used to replace the components in the plant sunscreen repair composition, the effect of the present invention cannot be achieved.

[0132] It can be seen from Application Examples 1-5 that the mass fraction of the components in the plant sunscreen repair composition provided by the present invention will also affect the comprehensive effect of the sunscreen lotion obtained by adding the components as effective ingredients into the sunscreen lotion. When the mass fraction of the components is further selected to be within the preferred range given by the present invention, the SPF value of the obtained product is above 45.3, the temperature reduction value is above 1.7, the improvement rate of TEWL on the 14th day is above 13.37, and the improvement rate of a* value is above 13.19; It can be seen from Application Examples 1 and Application Examples 6-11 that the extraction method of the extract of the present invention will also affect the comprehensive effect of the sunscreen lotion obtained by adding the extract as an effective ingredient into the sunscreen lotion;

[0133] The before and after comparison pictures of volunteers using the sunscreen lotion in the blank application example and application example 1 are as follows: Figure 1-2 As shown in the figure, it can also be seen that the technical solution provided by the present invention can effectively relieve skin irritation and repair the skin barrier.

[0134] Effect Example 3

[0135] The effect example of the present invention verifies the applicability and refreshing effect of the sunscreen product prepared in Application Example 1 for consumers with sensitive skin, and specifically includes the following steps:

[0136] Thirty Asian subjects with sensitive facial skin and recent sensitive skin symptoms were selected to participate in the test. Sunscreen products were distributed to them and each subject was given a 2mg / cm 2Appropriate amount of the product was applied on the face for 28 days for sensitive skin suitability test. Consumers completed a questionnaire survey on the improvement of indicators such as feeling of use, discomfort, tolerance, mildness and non-irritation, and refreshing effect. The results are shown in Table 5.

[0137] Table 5

[0138]

[0139] It can be seen from Table 5 that the sunscreen lotion prepared by the technical solution of the present invention is suitable for consumers with sensitive skin, and consumers with sensitive skin have a good usage experience.

[0140] Finally, it should be noted that the above embodiments are intended 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 may be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. A plant sunscreen repair composition suitable for sensitive skin, It is characterized in that The plant sunscreen repair composition comprises the following components: Cistanche deserticola extract, rose flower extract, Phellodendron amurense bark extract, Eucommia ulmoides bark extract, and Cryptomeria fortunei bud extract.

2. The plant sunscreen repair composition according to claim 1, It is characterized in that The plant sunscreen repair composition comprises the following components in parts by weight: 3-7 parts of Cistanche deserticola extract, 0.5-2 parts of Rosa Chinensis extract, 0.2-0.8 parts of Phellodendron amurense bark extract, 1-5 parts of Eucommia ulmoides bark extract, and 0.5-2 parts of Cryptomeria fortunei bud extract.

3. The plant sunscreen repair composition according to claim 1, It is characterized in that The plant sunscreen repair composition comprises the following components in parts by weight: 4-5 parts of Cistanche deserticola extract, 1-1.5 parts of Rosa Chinensis extract, 0.5-0.6 parts of Phellodendron amurense bark extract, 2-4 parts of Eucommia ulmoides bark extract, and 1-1.4 parts of Cryptomeria fortunei bud extract.

4. The plant sunscreen repair composition according to claim 1, It is characterized in that The total mass percentage of the Phellodendron amurense bark extract and the Eucommia ulmoides bark extract in the plant sunscreen repair composition is 25-40%.

5. The plant sunscreen repair composition according to claim 1, It is characterized in that The mass percentage of the Cryptomeria fortunei bud extract in the plant sunscreen repair composition is 10-13%.

6. The plant sunscreen repair composition according to claim 1, It is characterized in that Satisfy at least one of the following: a. The preparation method of the Cistanche extract comprises the following steps: adding Cistanche to an ethanol aqueous solution for reflux extraction, collecting the filtrate after the extraction is completed, concentrating and drying, and obtaining a Cistanche extract; b. The preparation method of the rose extract comprises the following steps: adding the rose to a mixed solution of an aqueous sodium bicarbonate solution and anhydrous ethanol and immersing the mixture, followed by filtering and concentrating to obtain a rose extract; c. The preparation method of the Phellodendron bark extract comprises the following steps: adding Phellodendron bark to water and heating for extraction, filtering after the extraction, collecting and concentrating the filtrate to obtain the Phellodendron bark extract; d. The preparation method of the Eucommia bark extract comprises the following steps: adding the Eucommia bark to an ethanol aqueous solution for heating and extraction, followed by filtering, collecting and concentrating the filtrate to obtain the Eucommia bark extract.

7. The plant sunscreen repair composition according to claim 6, It is characterized in that In the preparation method of the rose extract, the volume ratio of the sodium bicarbonate aqueous solution to anhydrous ethanol is 1:(1.5-2.5); And / or, in the sodium bicarbonate aqueous solution, the mass percentage of sodium bicarbonate is 0.5-1.5%.

8. The plant sunscreen repair composition according to claim 6, It is characterized in that In the preparation method of the rose extract, the immersion temperature is 45-55° C. and the immersion time is 20-28 hours.

9. Use of the plant sunscreen repair composition according to any one of claims 1 to 8 in the preparation of sunscreen products.

10. A sunscreen lotion, It is characterized in that The sunscreen lotion comprises the following components in percentage by mass: 5-12% of the plant sunscreen repair composition according to any one of claims 1 to 8, 5-7% of a physical sunscreen, 10-15% of a chemical sunscreen, 10-15% of an emollient, 2-3% of a film former, 5-12% of a humectant, 0.1-0.5% of a thickener, 0.5-2% of a preservative, 1-5% of an emulsifier, and the balance is water.

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