Plant composition and application thereof in relieving and / or sunscreen

Abstract

The invention provides a plant composition and application thereof in relieving and / or sun protection. The plant composition is prepared from the following components in percentage by weight: 20 to 40 percent of pomelo peel extract, 0.1 to 5 percent of cortex magnoliae officinalis extract, 0.01 to 0.04 percent of licorice root extract, 1 to 10 percent of solubilizer and the balance of polyol solvent. The plant composition disclosed by the invention not only can remarkably inhibit the activity of hyaluronidase and exert excellent soothing and anti-allergy effects, but also can remarkably improve the sunscreen performance of a specific chemical sunscreen agent, and is suitable for being used as a synergist for and / or preparing the chemical sunscreen agent. In addition, compared with a composition in which any one of the plant extracts is replaced, the plant composition obtained by compounding the three specific plant extracts has obviously more excellent soothing, anti-allergy and sunscreen synergistic effects.

Description

Technical Field

[0001] The present invention belongs to the technical field of cosmetics. More specifically, it relates to a plant composition and its application in soothing and / or sun protection. Background Art

[0002] Skin sensitivity reaction refers to a highly reactive state that occurs in the skin under physiological or pathological conditions, manifested as subjective symptoms such as burning, stinging, and red rashes on the skin, with or without objective signs such as erythema, scaling, and telangiectasia. Currently, there are many factors that can cause skin sensitivity. For example, oxidative stress reactions caused by ultraviolet radiation, excessive loss of skin lipids, damage to the skin barrier function, and air pollution caused by improper use of cleansing products may all lead to skin sensitivity reactions. Therefore, the use of soothing products is crucial for skin health.

[0003] Currently, there are many soothing products on the market, but most of them contain a large amount of chemical components and have problems such as relatively high irritation. Therefore, products composed of natural, safe, and abundant plant extracts have gradually become a research hotspot for soothing products. However, plant compositions obtained by compounding different plant extracts have obvious differences and vary greatly in efficacy. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention aims to provide a plant composition. By compounding three specific plant extracts, it can not only significantly inhibit the activity of hyaluronidase, exert excellent soothing and anti-allergic effects, but also significantly improve the sun protection performance of specific chemical sunscreens, and is suitable for use as and / or preparing a synergist for chemical sunscreens.

[0005] The first object of the present invention is to provide a plant composition.

[0006] The second object of the present invention is to provide the application of the above plant composition in the preparation of cosmetics.

[0007] The third object of the present invention is to provide the application of the above plant composition in the preparation of soothing products.

[0008] The fourth object of the present invention is to provide the application of the above plant composition in the use as and / or preparation of a synergist for chemical sunscreens.

[0009] The fifth object of the present invention is to provide the application of the above plant composition in the preparation of sun protection products.

[0010] The above objects of the present invention are achieved by the following technical solutions: The present invention provides a plant composition, comprising 20 wt% - 40 wt% of pomelo peel extract, 0.1 wt% - 5 wt% of magnolia bark extract, 0.01 wt% - 0.04 wt% of liquorice root extract, 1 wt% - 10 wt% of solubilizer, and the balance being a polyol solvent.

[0011] The plant composition of the present invention can not only significantly inhibit the activity of hyaluronidase, exert excellent soothing and anti-allergic effects, but also significantly enhance the sun protection performance of specific chemical sunscreen agents, and is suitable for use as and / or preparing a synergist for chemical sunscreen agents. In addition, compared with the composition obtained by replacing any one of the plant extracts, the plant composition obtained by compounding specific three plant extracts in the present invention has significantly more excellent soothing and anti-allergic and sun protection synergistic effects.

[0012] Preferably, it comprises 25 wt% - 35 wt% of pomelo peel extract, 1 wt% - 4 wt% of magnolia bark extract, 0.01 wt% - 0.03 wt% of liquorice root extract, 3 wt% - 7 wt% of solubilizer, and the balance being a polyol solvent.

[0013] Most preferably, it comprises 30 wt% of pomelo peel extract, 2.5 wt% of magnolia bark extract, 0.02 wt% of liquorice root extract, 5 wt% of solubilizer, and the balance being a polyol solvent.

[0014] Preferably, the solubilizer is one or more of polyvinylpyrrolidone, trideceth-9, PEG-40 hydrogenated castor oil, and polysorbate-20.

[0015] Most preferably, the solubilizer is polyvinylpyrrolidone.

[0016] Preferably, the polyol solvent is one or more of butanediol, 1,2-butanediol, 1,3-propanediol, 1,2-pentanediol, 1,2-hexanediol, and glycerol.

[0017] Most preferably, the polyol solvent is butanediol.

[0018] Based on this, the present invention also provides a preparation method of the plant composition, specifically: after dispersing the solubilizer evenly in the polyol solvent, then adding the pomelo peel extract, magnolia bark extract, and liquorice root extract and mixing evenly, and performing solid-liquid separation to obtain it.

[0019] Preferably, the even dispersion is carried out at 50 - 60 °C.

[0020] Preferably, the mixing is carried out at 50 - 60 °C.

[0021] Preferably, the solid-liquid separation is filtration.

[0022] The plant composition of the present invention can significantly inhibit the activity of hyaluronidase, and thus exert excellent soothing and anti-allergic effects. Therefore, the applications of the above plant composition in the preparation of cosmetics and in the preparation of soothing products should be within the protection scope of the present invention.

[0023] The plant composition of the present invention can significantly improve the sun protection performance of specific chemical sunscreen agents, and thus achieve the original sun protection effect on the basis of reducing the dosage of chemical sunscreen agents, greatly reducing the adverse reactions of the skin. Therefore, the present invention also provides the application of the above plant composition as and / or in the preparation of a synergist for chemical sunscreen agents, wherein the chemical sunscreen agent includes one or more of cinnamate chemical sunscreen agents, salicylate chemical sunscreen agents, triazine chemical sunscreen agents, and imidazole chemical sunscreen agents.

[0024] Preferably, the cinnamate chemical sunscreen agent is one or more of ethylhexyl methoxycinnamate, octocrylene, and isoamyl p-methoxycinnamate, such as ethylhexyl methoxycinnamate and octocrylene with a mass ratio of 8-10:2-4.

[0025] Preferably, the salicylate chemical sunscreen agent is one or more of homosalate and ethylhexyl salicylate, such as homosalate and ethylhexyl salicylate with a mass ratio of 9-11:4-6.

[0026] Preferably, the triazine chemical sunscreen agent is one or more of ethylhexyl triazone, diethylhexyl butamido triazone, and bis-ethylhexyloxyphenol methoxyphenyl triazine.

[0027] Preferably, the imidazole chemical sunscreen agent is one or more of disodium phenyl dibenzimidazole tetrasulfonate, phenylbenzimidazole sulfonic acid, sodium phenylbenzimidazole sulfonate, potassium phenylbenzimidazole sulfonate, and the triethanolamine salt, such as disodium phenyl dibenzimidazole tetrasulfonate and phenylbenzimidazole sulfonic acid with a mass ratio of 3-5:3-5.

[0028] Based on this, the present invention also provides the application of the above plant composition in the preparation of sunscreen products, wherein the sunscreen products contain one or more of cinnamate chemical sunscreen agents, salicylate chemical sunscreen agents, triazine chemical sunscreen agents, and imidazole chemical sunscreen agents.

[0029] In addition, the present invention also provides a cosmetic containing the above plant composition and a chemical sunscreen agent with a mass ratio of 0.1-5:4-30, wherein the chemical sunscreen agent is one or more of cinnamate chemical sunscreen agents, salicylate chemical sunscreen agents, triazine chemical sunscreen agents, and imidazole chemical sunscreen agents.

[0030] Preferably, the mass ratio of the plant composition to the chemical sunscreen agent is 3:5-20.

[0031] Further preferably, the mass ratio of the plant composition to the chemical sunscreen is 3:5 to 15.

[0032] Preferably, the cosmetic is one or more of a sunscreen lotion, a sunscreen cream, a sunscreen spray, a sunscreen stick, a primer, a liquid foundation, and a powder cake.

[0033] Preferably, the content of the plant composition in the cosmetic is 0.1 wt% to 5 wt%.

[0034] As a preferred feasible embodiment, the cosmetic may be a sunscreen product, comprising the following components in mass percentages: Sunscreen ingredient 15 wt% to 15 wt%, sunscreen ingredient 2 7.8 wt% to 8.2 wt%, dibutyl adipate 9 wt% to 11 wt%, cetearyl alcohol 1.4 wt% to 1.6 wt%, glyceryl stearate 1.2 wt% to 1.3 wt%, PEG-100 stearate 1.2 wt% to 1.3 wt%, potassium cetyl phosphate 0.3 wt% to 0.5 wt%, xanthan gum 0.15 wt% to 0.25 wt%, glycerol 0.8 wt% to 1.2 wt%, sodium polyacryloyldimethyltaurate 0.3 wt% to 0.5 wt%, plant composition 0.1 wt% to 5 wt%, phenoxyethanol 0.6 wt% to 0.8 wt%, ethylhexylglycerin 0.08 wt% to 0.12 wt%, and the balance being water.

[0035] In addition, the preparation method of the sunscreen product comprises the following steps: S1. Heat sunscreen ingredient 1 until it is dissolved and transparent, and then mix it with dibutyl adipate, cetearyl alcohol, glyceryl stearate, PEG-100 stearate, and potassium cetyl phosphate to obtain an oil phase; S2. Mix xanthan gum, glycerol, sunscreen ingredient 2, and sodium polyacryloyldimethyltaurate to obtain an aqueous phase; S3. Pour the oil phase into the aqueous phase while stirring, and then homogenize until emulsification is complete; S4. After cooling, add water, the above-mentioned plant composition, phenoxyethanol, and ethylhexylglycerin, mix them evenly, and then homogenize until the material is uniform.

[0036] Preferably, the sunscreen ingredient 1 in S1 is an oil-soluble chemical sunscreen, such as a cinnamate chemical sunscreen, a salicylate chemical sunscreen, or a triazine chemical sunscreen.

[0037] Preferably, the heating temperature in S1 is 75 to 85 °C.

[0038] Preferably, the mixing temperature in S1 is 75 to 85 °C.

[0039] Preferably, the sunscreen ingredient 2 in S2 is a water-soluble chemical sunscreen agent, such as an imidazole chemical sunscreen agent.

[0040] Preferably, the temperature for mixing in S2 is 75 - 85 °C.

[0041] Preferably, the rotation speed of stirring in S3 is 100 - 400 rpm.

[0042] Preferably, after pouring into the aqueous phase in S3, stirring continues for 1 - 3 min.

[0043] Preferably, the rotation speed of homogenization in S3 is 3000 - 6000 rpm.

[0044] Preferably, the cooling in S4 is to cool down to below 45 °C.

[0045] Preferably, the rotation speed of homogenization in S4 is 3000 - 6000 rpm.

[0046] The present invention has the following beneficial effects: 1. The plant composition of the present invention can not only significantly inhibit the activity of hyaluronidase, exert excellent soothing and anti-allergic effects, but also significantly improve the sunscreen performance of specific chemical sunscreen agents, and is suitable for being used as and / or preparing a synergist for chemical sunscreen agents. In addition, compared with the composition obtained by replacing any one of the plant extracts, the plant composition obtained by compounding specific three plant extracts in the present invention has significantly more excellent soothing and anti-allergic and sunscreen synergistic effects.

[0047] 2. The three functional ingredients selected for the plant composition of the present invention are all of plant origin, the raw materials are easily obtained, safe and non-irritating, and the preparation process of the plant composition is simple. Specific Embodiments

[0048] The following specific examples are used to further illustrate the present invention, but the examples do not limit the present invention in any form. Unless otherwise specified, the reagents, methods and equipment used in the present invention are conventional reagents, methods and equipment in the technical field.

[0049] Unless otherwise specified, the reagents and materials used in the following examples are all commercially available.

[0050] Example 1 A Plant Composition I. Ingredients Pomelo peel extract 30 wt%, Magnolia officinalis bark extract 2.5 wt%, Licorice root extract 0.02 wt%, Polyvinylpyrrolidone 5 wt%, and the balance is butanediol.

[0051] II. Preparation Method Polyvinylpyrrolidone is added to butanediol and stirred at 55 °C until completely dissolved. Then, pomelo peel extract, magnolia bark extract, and licorice root extract are added and mixed evenly at 55 °C. The transparent liquid obtained by filtration is the plant composition.

[0052] Example 2 A plant composition I. Ingredients Pomelo peel extract 25 wt%, magnolia bark extract 4 wt%, licorice root extract 0.01 wt%, polyvinylpyrrolidone 7 wt%, and the balance is butanediol.

[0053] II. Preparation method Same as Example 1.

[0054] Example 3 A plant composition I. Ingredients Pomelo peel extract 35 wt%, magnolia bark extract 1 wt%, licorice root extract 0.03 wt%, polyvinylpyrrolidone 3 wt%, and the balance is butanediol.

[0055] II. Preparation method Same as Example 1.

[0056] Example 4 A plant composition I. Ingredients Pomelo peel extract 20 wt%, magnolia bark extract 5 wt%, licorice root extract 0.01 wt%, polyvinylpyrrolidone 10 wt%, and the balance is butanediol.

[0057] II. Preparation method Polyvinylpyrrolidone is added to butanediol and stirred at 60 °C until completely dissolved. Then, pomelo peel extract, magnolia bark extract, and licorice root extract are added and mixed evenly at 60 °C. The transparent liquid obtained by filtration is the plant composition.

[0058] Example 5 A plant composition I. Ingredients Pomelo peel extract 40 wt%, magnolia bark extract 0.1 wt%, licorice root extract 0.04 wt%, polyvinylpyrrolidone 1 wt%, and the balance is butanediol.

[0059] II. Preparation method Polyvinylpyrrolidone is added to butanediol and stirred at 50 °C until completely dissolved. Then, pomelo peel extract, magnolia bark extract, and licorice root extract are added and mixed evenly at 50 °C. The transparent liquid obtained by filtration is the plant composition.

[0060] Comparative Example 1 A plant composition I. Ingredients Same as Example 1, except that the pomelo peel extract is replaced with the Scutellaria baicalensis root extract, specifically: Scutellaria baicalensis root extract 30 wt%, Magnolia officinalis bark extract 2.5 wt%, Glycyrrhiza glabra root extract 0.02 wt%, polyvinylpyrrolidone 5 wt%, and the balance is butanediol.

[0061] II. Preparation Method Same as Example 1.

[0062] Comparative Example 2 A plant composition I. Ingredients Same as Example 1, except that the Magnolia officinalis bark extract is replaced with the Reynoutria japonica root extract, specifically: Pomelo peel extract 30 wt%, Reynoutria japonica root extract 2.5 wt%, Glycyrrhiza glabra root extract 0.02 wt%, polyvinylpyrrolidone 5 wt%, and the balance is butanediol.

[0063] II. Preparation Method Same as Example 1.

[0064] Comparative Example 3 A plant composition I. Ingredients Same as Example 1, except that the Glycyrrhiza glabra root extract is replaced with the Sophora japonica flower extract, specifically: Pomelo peel extract 30 wt%, Magnolia officinalis bark extract 2.5 wt%, Sophora japonica flower extract 0.02 wt%, polyvinylpyrrolidone 5 wt%, and the balance is butanediol.

[0065] II. Preparation Method Same as Example 1.

[0066] Comparative Example 4 A plant composition I. Ingredients Same as Example 1, except that the Magnolia officinalis bark extract is replaced with the Forsythia suspensa leaf extract, specifically: Pomelo peel extract 30 wt%, Forsythia suspensa leaf extract 2.5 wt%, Glycyrrhiza glabra root extract 0.02 wt%, polyvinylpyrrolidone 5 wt%, and the balance is butanediol.

[0067] II. Preparation Method Same as Example 1.

[0068] Comparative Example 5 A plant composition I. Ingredients Same as Example 1, except that polyvinylpyrrolidone is replaced with butanediol, specifically: Pomelo peel extract 30 wt%, Magnolia officinalis bark extract 2.5 wt%, Glycyrrhiza glabra root extract 0.02 wt%, and the balance is butanediol.

[0069] II. Preparation Method Same as Example 1.

[0070] Test Example 1 Stability Test of Plant Composition The plant compositions obtained in Examples 1 - 5 and Comparative Examples 1 - 5 were placed in environments of light, 5 °C, 25 °C, and 45 °C for 30 days respectively, and the unstable phenomena such as layering, discoloration, and precipitation of the plant compositions were observed. The results are shown in Table 1.

[0071] Table 1

[0072] It can be seen that the plant compositions obtained in Examples 1 - 5 all showed excellent stability in the stability tests of light, 5 °C, 25 °C, and 45 °C; while in Comparative Examples 1 - 5 where the types of plant extracts were changed and the solubilizer was removed, more or less unstable phenomena such as layering, darkening of color, and precipitation of particles occurred. It shows that it is precisely the plant composition obtained by compounding three specific plant extracts of the present invention and supplementing with other raw materials such as solubilizers that can have significantly more excellent stability.

[0073] Test Example 2 Soothing and Anti - allergic Efficacy Test of Plant Composition I. Experimental Principle The soothing and anti - allergic efficacy of the plant composition was determined by the in vitro inhibition method of hyaluronidase activity. Hyaluronidase is a participant in allergic reactions, decomposing hyaluronic acid in the body into low - molecular - weight acidic stimulants, causing the release of histamine and inducing the body to produce sensitive symptoms. The hyaluronidase activity inhibition test is a typical in vitro evaluation method for soothing and anti - allergic activity. The soothing and anti - allergic activity of the plant composition is evaluated by the inhibition rate of hyaluronidase activity. The higher the inhibition rate, the stronger the soothing and anti - allergic activity of the plant composition, that is, when the IC 50 value of the inhibitory effect of the plant composition on hyaluronidase activity is lower, its soothing and anti - allergic activity is stronger.

[0074] II. Preparation of Solutions (1) 0.1 mol / L acetic acid buffer solution (pH = 3.6): Measure 1.5 mL of glacial acetic acid, dilute it to 250 mL with ultrapure water, and adjust the pH to 3.6 with NaOH; (2) Hyaluronidase solution (7900 U / mL): Weigh 0.1300 g of hyaluronidase and place it in a beaker, add 5 mL of acetic acid buffer solution to dissolve; (3) Sodium hyaluronate solution (1.2 mg / mL): Weigh 0.0240 g of sodium hyaluronate and place it in a beaker, add 20 mL of acetic acid buffer solution to dissolve; (4) Calcium chloride solution (12.5 mmol / L): Weigh 0.13875 g of calcium chloride, dissolve it with ultrapure water and make up the volume to 100 mL; (5) Sodium hydroxide solution (0.4 mol / L): Weigh 1.6 g of sodium hydroxide, dissolve it with ultrapure water and make up the volume to 100 mL; (6) Sodium borate solution (0.2 mol / L): Weigh 4.0244 g of sodium borate, dissolve it with ultrapure water and make up the volume to 100 mL; (7) Hydrochloric acid solution (10 mol / L): Measure 20.8 mL of concentrated hydrochloric acid, add water to make the concentration 10 mol / L, and shake well; (8) PDMAB solution: Weigh 4.00 g of p-dimethylaminobenzaldehyde, add 50 mL of 10 mol / L hydrochloric acid solution, and then add 350 mL of glacial acetic acid.

[0075] III. Determination of the IC 50 value Respectively take the plant compositions obtained in Examples 1-5 and Comparative Examples 1-4, and measure their hyaluronidase activity inhibition rates according to the following steps: S1. Take 50 μL of 7900 U / mL hyaluronidase solution and 50 μL of the plant composition (as the sample group, and the group in which the plant composition is replaced by a solution obtained by mixing polyvinylpyrrolidone and butanediol with a mass ratio of 5:95 is used as the negative control group, and the group in which the plant composition is replaced by an acetate buffer solution is used as the blank group; in addition, an experiment in which each group of hyaluronidase solution is replaced by a sodium hyaluronate solution is set up for zero adjustment of the data of each group) and incubate at 37 °C for 20 min; S2. Add 50 μL of 12.5 mmol / L calcium chloride solution and incubate at 37 °C for 20 min; S3. Add 250 μL of 1.2 mg / mL sodium hyaluronate solution and incubate at 37 °C for 40 min; S4. Add 50 μL of 0.4 mol / L sodium hydroxide solution and 100 μL of 0.2 mol / L sodium borate solution, heat in a boiling water bath at 100 °C for 3 min, and then cool to 25 °C with ice water; S5. Add 1.5 mL of PDMAB solution, incubate in a water bath at 37 °C for 20 min, take out and cool to 25 °C, and perform wavelength scanning within the range of 450 - 700 nm using a microplate reader to determine the maximum absorption wavelength. Measure the absorbance value at this maximum absorption wavelength, and calculate the hyaluronidase activity inhibition rate according to the formula "Hyaluronidase activity inhibition rate / % = [A - B] / [A] × 100%" (where A is the absorbance value after zero adjustment of the blank group, and B is the absorbance value after zero adjustment of the sample group or negative control group). Perform Probit regression analysis using SPSS software to obtain the concentration when the hyaluronidase activity inhibition rate of the plant composition is 50%, that is, the IC 50 value, and the results are shown in Table 2.

[0076] Table 2

[0077] In the table, the "-" in the negative control group is because its hyaluronidase activity inhibition rate is 0 and the IC 50 value cannot be measured.

[0078] It can be seen that the IC 50 values of the plant compositions obtained in Examples 1 - 5 for the inhibition of hyaluronidase activity are significantly lower than those of Comparative Examples 1 - 4, indicating that the plant composition of the present invention can significantly inhibit hyaluronidase activity and thus exert an excellent soothing and anti - allergic effect. In addition, compared with the compositions in which any one of the plant extracts is replaced, the plant composition obtained by compounding specific three plant extracts in the present invention has a significantly more excellent soothing and anti - allergic effect.

[0079] IV. Determine the combination index CI value of the three plant extracts in the plant composition According to the results in Table 2, using the Chou - Talalay method, according to "CI = D A / D (X)A +D B / D (X)B +D C / D (X)C " (the specific plant extracts A, B, and C of Examples 1 - 5 and Comparative Examples 1 - 4 are shown in Table 3; D A 、D B and D C are the respective concentrations of A, B, and C when the inhibition rate of the plant compositions obtained in Examples 1 - 5 and Comparative Examples 1 - 4 on hyaluronidase activity is 50%; D (X)A is the concentration of A when the inhibition rate of system a on hyaluronidase activity is 50%, and system a is obtained by mixing A, polyvinylpyrrolidone, and butanediol in a mass ratio of 30:5:65; D (X)BThe concentration of B when the inhibition rate of system b on hyaluronidase activity is 50%. System b is obtained by mixing B, polyvinylpyrrolidone, and butanediol in a mass ratio of 30:5:65; D (X)C The concentration of C when the inhibition rate of system c on hyaluronidase activity is 50%. System c is obtained by mixing C, polyvinylpyrrolidone, and butanediol in a mass ratio of 30:5:65). The combination index CI values of the three plant extracts in the plant compositions obtained in Examples 1 to 5 and Comparative Examples 1 to 4 were calculated, and the results are shown in Table 4. CI < 0.3 indicates strong synergy, 0.3 < CI < 0.7 indicates synergy, 0.7 < CI < 1 indicates slight synergy, CI = 1 indicates addition, and CI > 1 indicates antagonism.

[0080] Table 3

[0081] Table 4

[0082] It can be seen that the CI values of the three plant extracts in the plant compositions obtained in Examples 1 to 5 are all less than 0.7, indicating that in the plant composition of the present invention, the pomelo peel extract, magnolia bark extract, and licorice root extract play a strong synergistic or synergistic role in soothing and anti-allergy.

[0083] Test Example 3 Synergistic effect of plant composition on chemical sunscreen agents I. Preparation of sunscreen products S1. First, heat the sunscreen ingredient 1 in Group A to dissolve and become transparent in a water bath at 80 °C, then mix it with other ingredients in Group A, and then mix it with Group B (each ingredient is pre-mixed) and Group C at 80 °C to obtain an oil phase; S2. Mix Group D (each ingredient is pre-mixed), the sunscreen ingredient 2 in Group E, and sodium polyacryloyldimethyltaurate (pre-mixed) at 80 °C to obtain an aqueous phase; S3. While stirring the aqueous phase with a blender at 200 rpm, quickly pour the oil phase into the aqueous phase while stirring at 200 rpm, then stir at 200 rpm for 2 min, and then homogenize at 4000 rpm until emulsification is complete; S4. When stirring and cooling to below 45 °C, add the deionized water in Group E, Group F, and Group G (each ingredient is pre-mixed), stir at 200 rpm for 2 min, and then homogenize at 4000 rpm until the material is uniform.

[0084] Among them, the specific ingredients and dosages of Groups A to G are shown in Table 5.

[0085] Table 5

[0086] Table 6

[0087] In the table, system a is obtained by mixing pomelo peel extract, polyvinylpyrrolidone, and butylene glycol in a mass ratio of 30:5:65; system b is obtained by mixing magnolia bark extract, polyvinylpyrrolidone, and butylene glycol in a mass ratio of 2.5:5:92.5; system c is obtained by mixing licorice root extract, polyvinylpyrrolidone, and butylene glycol in a mass ratio of 0.02:5:94.98.

[0088] II. Sunscreen efficacy test Using sunscreen products 1 - 8 and comparative sunscreen products 1 - 13 as test samples, taking the sample with the sunscreen ingredients in each test sample replaced by dibutyl adipate as the sample blank, taking the sample with the plant composition in each test sample replaced by deionized water as the control sample, and taking the sample with the sunscreen ingredients in each control sample replaced by dibutyl adipate as the control blank, the SPF value was measured according to ISO 24443. Among them, the SPF value of the test sample was zeroed with the SPF value (1.13) of the sample blank, and after zeroing, it was recorded as SPF 受试样品 ; the SPF value of the control sample was zeroed with the SPF value (1.11) of the control blank, and after zeroing, it was recorded as SPF 对照样品 . According to "SPF value increase rate (%) = (SPF 受试样品 - SPF 对照样品 ) / SPF 对照样品 ×100%", the SPF value increase rate of the test sample in the presence of the plant composition was calculated to characterize the sunscreen synergistic effect of the plant composition on the chemical sunscreen agent. The results are shown in Table 7.

[0089] Table 7

[0090] It can be seen that when sunscreen products 1 - 8 contain the plant composition of the present invention and a specific chemical sunscreen agent, the SPF values are all significantly increased, indicating that the plant composition of the present invention can significantly improve the sunscreen performance of the specific chemical sunscreen agent and is suitable for use as and / or preparing a synergist for chemical sunscreen agents. In addition, compared with the composition obtained by replacing any one of the plant extracts or replacing the type of chemical sunscreen agent, the plant composition obtained by compounding three specific plant extracts in the present invention has a significantly more excellent sunscreen synergistic effect.

[0091] The above embodiments are preferred embodiments of the present invention, but the embodiments of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. A plant composition, characterized in that, It contains 20 wt% to 40 wt% of pomelo peel extract, 0.1 wt% to 5 wt% of magnolia bark extract, 0.01 wt% to 0.04 wt% of licorice root extract, 1 wt% to 10 wt% of solubilizer, and the balance is a polyol solvent.

2. The plant composition according to claim 1, characterized in that, The solubilizer is one or more of polyvinylpyrrolidone, trideceth-9, PEG-40 hydrogenated castor oil, and polysorbate-20.

3. Use of the plant composition according to claim 1 in the preparation of cosmetics.

4. Use of the plant composition according to claim 1 in the preparation of a soothing product.

5. Use of the plant composition according to claim 1 as and / or in the preparation of a synergist for a chemical sunscreen, characterized in that, The chemical sunscreen contains one or more of cinnamate chemical sunscreens, salicylate chemical sunscreens, triazine chemical sunscreens, and imidazole chemical sunscreens.

6. The application according to claim 5, wherein The cinnamate chemical sunscreens are one or more of ethylhexyl methoxycinnamate, octocrylene, and isoamyl p-methoxycinnamate.

7. The application according to claim 5, characterized in that, The salicylate chemical sunscreens are one or more of homosalate and ethylhexyl salicylate.

8. The application according to claim 5, characterized in that, The triazine chemical sunscreens are one or more of ethylhexyl triazone, diethylhexyl butamido triazone, and bis-ethylhexyloxyphenol methoxyphenyl triazine.

9. The application according to claim 5, wherein The imidazole chemical sunscreens are one or more of disodium phenyl dibenzimidazole tetrasulfonate, phenylbenzimidazole sulfonic acid, sodium phenylbenzimidazole sulfonate, potassium phenylbenzimidazole sulfonate, and the triethanolamine salt.

10. Use of the plant composition according to claim 1 in the preparation of a sunscreen product, characterized in that, The sunscreen product contains one or more of cinnamate chemical sunscreens, salicylate chemical sunscreens, triazine chemical sunscreens, and imidazole chemical sunscreens.

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