Compound extract for controlling oil and relieving and preparation method thereof

Abstract

The invention discloses an oil-controlling and soothing composite extract and a preparation method thereof, and particularly relates to the technical field of cosmetics, the composite extract is composed of 5-10% of a purslane extract, 3-10% of a swertia extract, 0.5-1% of a sophora flavescens extract, 1-5% of an oil-controlling active component, 40-50% of butanediol and the balance of water. The preparation method comprises the following steps: weighing extract powder of each component, heating butanediol, sequentially adding each extract, stirring and dissolving, adding the oil-control active component, homogenizing, and finally filtering and sterilizing. The compound extract achieves the dual effects of relieving, resisting allergy and controlling oil by synergistically inhibiting a TRPV1 receptor, regulating inflammatory factor expression and regulating sebum secretion, can be applied to skin care products such as essence, emulsion and masks, has the addition amount of 0.5%-5%, has remarkable effects in the aspects of oil control, relieving and the like, is mild and non-irritant, and is suitable for various skin types.

Description

Technical Field

[0001] The present invention relates to the technical field of cosmetics, and more specifically, to an oil-control and soothing extract and a preparation method thereof. Background Art

[0002] In the field of cosmetics, with the improvement of people's living standards and the increasing attention to skin health, the requirements for the efficacy and safety of skin care products are becoming increasingly stringent. The number of people with sensitive skin is constantly increasing. According to relevant market research reports, about 40% of consumers self-identify as having sensitive skin, and topics related to sensitive skin continue to gain popularity on social media. The typical symptoms of sensitive skin include flushing, acne, dryness, etc., and are closely related to external environments such as seasonal changes and sun exposure, which makes consumers' demand for products with targeted soothing and repair effects extremely urgent.

[0003] At the same time, people with oily and sensitive skin face more troubles when skin care. They not only have to deal with various discomfort symptoms of sensitive skin, but also have to solve problems such as enlarged pores and frequent acne caused by excessive sebum secretion. However, existing skin care products often have difficulty meeting the dual requirements of oil control and soothing and anti-allergy at the same time. Some products have an oil control effect, but are highly irritating to sensitive skin and may aggravate sensitive symptoms; while some products that mainly focus on soothing and anti-allergy have poor oil control effects.

[0004] Currently, products on the market targeting sensitive skin or oily skin have many deficiencies in ingredient selection and formulation design. Most products focus on single efficacy and cannot solve the complex problems of oily and sensitive skin from multiple dimensions. Moreover, existing products do not do well in balancing the mildness and effectiveness of ingredients and are difficult to meet consumers' expectations for mild and highly effective skin care products. In addition, with consumers' pursuit of natural and safe ingredients, more and more people tend to choose skin care products containing natural plant ingredients, but currently, the synergistic effects of such products in soothing and anti-allergy and oil control still need to be improved. Therefore, developing a composite extract that can simultaneously achieve the effects of oil control and soothing and anti-allergy, and is mild and non-irritating, as well as its preparation method, has important market significance and application value. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an oil-control and soothing composite extract and a preparation method thereof to solve the problems raised in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: An oil-control and soothing composite extract is composed of the following components in percentage by weight:

[0007] Portulaca oleracea extract: 5% - 10%;

[0008] Swertia bimaculata extract: 3% - 10%;

[0009] Sophora flavescens extract: 0.5%-1%;

[0010] Oil-control active ingredient: 1%-5%, and the oil-control active ingredient is selected from at least one of green tea polyphenols, zinc gluconate, and azelaic acid derivatives;

[0011] Butylene glycol: 40%-50%;

[0012] Water: the balance.

[0013] Among them, the composite extract realizes the dual effects of soothing and anti-allergy and oil control by synergistically inhibiting the TRPV1 receptor, regulating the expression of inflammatory factors, and regulating sebum secretion.

[0014] Flavonoid and saponin components in Portulaca oleracea and Swertia bimaculata extracts can specifically inhibit the activity of TRPV1 receptor, reduce Ca 2 2+ influx, reduce neurogenic inflammatory response, and thus relieve sensitive symptoms such as burning and stinging.

[0015] Matrine in Sophora flavescens extract reduces the release of pro-inflammatory factors such as IL-6 and TNF-α, and at the same time up-regulates the anti-inflammatory factor IL-10, balances the immune response, and reduces skin flushing and edema.

[0016] As a moisturizer, butylene glycol enhances the skin barrier function and at the same time promotes the penetration of active ingredients; the three plant extracts and the oil-control ingredient act synergistically to improve the problems of oily and sensitive skin from multiple dimensions of inhibiting the source of sensitive reaction (TRPV1), regulating the inflammatory pathway, and reducing sebum secretion.

[0017] Preferably, the oil-control active ingredient is a mixture of green tea polyphenols and zinc gluconate, and the mass ratio of the two is 1:1-3:1.

[0018] Green tea polyphenols reduce the production of dihydrotestosterone (DHT) by inhibiting the activity of 5α-reductase, thereby reducing the secretion of sebaceous glands;

[0019] Zinc gluconate can adsorb excessive sebum, astringe pores, and inhibit the proliferation of Propionibacterium acnes, preventing inflammatory acne caused by oily skin.

[0020] Preferably, the preparation methods of the Portulaca oleracea extract, Swertia bimaculata extract, and Sophora flavescens extract include the following steps:

[0021] (1) Portulaca oleracea extract: Ultrasonic-assisted extraction is carried out with a water-ethanol mixed solvent, the extraction temperature is 40-50 °C, the time is 2-3 hours, and it is freeze-dried after concentration;

[0022] (2) Swertia extract: Extracted by supercritical CO2 extraction, with a pressure of 25 - 30 MPa, a temperature of 45 - 50 °C, ethanol as the entrainer, and an extraction time of 4 hours;

[0023] (3) Sophora flavescens extract: Extracted by microwave-assisted water extraction method, with a microwave power of 400 W, a solid-liquid ratio of 1:15, an extraction time of 30 minutes, and concentrated after centrifugation.

[0024] Preferably, the volume ratio of water to ethanol in the water-ethanol mixed solvent is 3:7.

[0025] A preparation method of an oil-control and soothing composite extract, comprising the following steps:

[0026] a. Weigh the extract powders of each component in proportion;

[0027] b. Heat the butylene glycol to 40 - 45 °C, and sequentially add the purslane extract, swertia extract, and sophora flavescens extract, and stir until completely dissolved;

[0028] c. Add the oil-control active ingredient and perform homogenization treatment;

[0029] d. Filter and sterilize to obtain a transparent and homogeneous composite extract solution.

[0030] Preferably, the homogenization treatment is carried out at a rotation speed of 2000 - 3000 rpm and stirred for 8 - 10 minutes for sufficient mixing.

[0031] A skin care product containing the above-mentioned oil-control and soothing composite plant extract, the skin care product being essence, lotion or mask, wherein the addition amount of the composite extract is 0.5% - 5%.

[0032] The technical effects and advantages of the present invention:

[0033] 1. By synergistically inhibiting the TRPV1 receptor, reducing calcium ion influx, and reducing neurogenic inflammatory responses, it effectively relieves sensitive symptoms such as burning and stinging. At the same time, it regulates the expression of inflammatory factors, balances the immune response, reduces skin flushing and edema, and has a good soothing and repairing effect on sensitive skin.

[0034] 2. Through oil-control active ingredients such as green tea polyphenols, it can inhibit the activity of 5α-reductase, reduce the production of dihydrotestosterone, and reduce sebum secretion; zinc gluconate can adsorb excessive sebum, astringe pores, and inhibit the proliferation of Propionibacterium acnes, preventing inflammatory acne, and improving the sebum secretion problem of oily sensitive skin from multiple dimensions.

[0035] 3. The synergistic effect of extracts from three plants, purslane, swertia and sophora flavescens, and oil-control ingredients acts together from multiple dimensions such as inhibiting the source of sensitive reactions, regulating the inflammatory pathway, and reducing sebum secretion to comprehensively improve the problems of oily and sensitive skin. As a humectant, butylene glycol enhances the skin barrier function while promoting the penetration of active ingredients, thus enhancing the overall skin care effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a trend chart of the results of testing the content of TRPV1 protein in the purslane extract during the soothing reaction in the present invention.

[0037] Figure 2 This is a trend chart of the results of testing the content of TRPV1 protein in the swertia extract during the soothing reaction in the present invention.

[0038] Figure 3 This is the molecular formula structure diagram of matrine in the sophora flavescens extract of the present invention.

[0039] Figure 4 This is the experimental verification result chart of the sophora flavescens extract in the ACD experiment in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0040] Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0041] A compound extract for oil control and soothing provided by the present invention is composed of the following components in percentage by weight:

[0042] Purslane extract: 5% - 10%; Swertia extract: 3% - 10%; Sophora flavescens extract: 0.5% - 1%;

[0043] Oil-control active ingredient: 1% - 5%, and the oil-control active ingredient is selected from at least one of green tea polyphenols, zinc gluconate, and azelaic acid derivatives; Butylene glycol: 40% - 50%; Water: the balance. Among them, the compound extract realizes the dual effects of soothing and anti-allergy and oil control by synergistically inhibiting the TRPV1 receptor, regulating the expression of inflammatory factors, and regulating sebum secretion.

[0044] Among them, the purslane extract is extracted from the stems and leaves of purslane;

[0045] The swertia extract is obtained by extracting the whole plant of swertia.

[0046] As shown in the appended Figure 1As shown, through experimental verification, the purslane extract contains flavonoids and saponins, which can specifically inhibit the activity of TRPV1 receptors, thereby reducing skin sensitivity reactions, reducing calcium ion influx caused by external stimuli, and thus reducing skin discomfort symptoms such as burning and pain, effectively alleviating skin allergic reactions and sensitivity symptoms related to inflammation. Especially in the reaction to external stimuli, it shows excellent anti-inflammatory and anti-allergic effects.

[0047] Specifically, based on the TRPV1 detection experiment of keratinocytes, the effect of purslane extract in the soothing reaction was tested. As can be seen from the appendix Figure 1 The experimental results show that the purslane extract can significantly inhibit the expression of TRPV1 protein.

[0048] Among them, compared with the BC (blank) group, the content of TRPV1 protein in the NC (negative) group increased significantly, indicating that the current stimulation conditions are effective.

[0049] Compared with the NC (negative) group, the content of TRPV1 protein in the PC (positive) group decreased significantly, indicating that the current positive stimulation conditions are effective.

[0050] Compared with the NC (negative) group, the content of TRPV1 protein in the 0.625% purslane extract sample decreased significantly.

[0051] As shown in the appendix Figure 2 As shown, through experimental verification, the swertia extract has soothing, repairing and anti-inflammatory functions. It helps sensitive skin recover by inhibiting TRPV1 receptors and reducing the release of inflammatory factors. Similar to the purslane extract, the swertia extract also inhibits TRPV1 receptors, reduces calcium ion influx caused by external stimuli, alleviates skin inflammatory reactions, and further helps reduce inflammation and allergic reactions by inhibiting inflammatory factors such as IL-6 and TNF-α, promoting skin barrier repair and tolerance improvement.

[0052] Specifically, based on the TRPV1 detection experiment of keratinocytes, the effect of swertia extract in the soothing reaction was tested. Among them, the swertia can be Swertia japonica, Swertia chirayita, or swertia growing in China. As can be seen from the appendix Figure 2It can be seen that the experimental results show that the extract of Swertia bimaculata can significantly inhibit the expression of TRPV1 protein. Here, Swertia japonica: contains a variety of chemical components, mainly including flavonoids, terpenoids, alkaloids, etc., such as isovitexin, isoorientin, etc. These components have pharmacological activities such as antioxidant and anti-inflammatory. Swertia chirayita: Its chemical composition is different from that of Swertia japonica, containing more bitter components, such as swertiamarin, gentiopicroside, etc., and also contains some compounds with medicinal value, such as oleanolic acid, ursolic acid, etc., which have the effects of protecting the liver, promoting bile secretion, and antibacterial. Among them, compared with the BC (blank) group, the content of TRPV1 protein in the NC (negative) group increased significantly, indicating that the current stimulation conditions are effective.

[0053] Compared with the NC (negative) group, the content of TRPV1 protein in the PC (positive) group decreased significantly, indicating that the current positive stimulation conditions are effective.

[0054] Compared with the NC (negative) group, the content of TRPV1 protein in the 0.625% extract of Swertia bimaculata decreased significantly, and the inhibition rate was 44.33%.

[0055] The main components of Sophora flavescens extract are flavonoids and alkaloids, which have anti-tumor, antibacterial, antipyretic, analgesic and anti-inflammatory pharmacological abilities. Its effective active ingredient, matrine (the molecular formula is as attached Figure 3 shown), is an alkaloid derived from the leguminous plant Sophora flavescens.

[0056] Matrine in Sophora flavescens extract alleviates skin flushing and edema by inhibiting the release of pro-inflammatory factors such as IL-6 and TNF-α, and at the same time upregulating the anti-inflammatory factor IL-10 to balance the immune response.

[0057] As attached Figure 4 shown, in the ACD (contact dermatitis) test of matrine, ACD is a common skin allergic reaction disease, belonging to type IV delayed hypersensitivity reaction, mainly triggered by skin contact with allergens. Clinically, ACD is usually used to describe the inflammatory state of the skin, showing a wide range of symptoms, including strong itching, erythema and edema and other inflammatory reactions.

[0058] Specifically, in the mouse ACD model, itching is represented by scratching behavior, and pain is reflected by wiping behavior.

[0059] Compared with the control group, the scratching times of the mice in the model group increased significantly (P < 0.05), the wiping behavior increased significantly (P < 0.01), and the skin thickness also increased significantly (P < 0.01). In the matrine treatment group, the scratching behavior of the mice decreased significantly (P < 0.05), the wiping behavior decreased significantly (P < 0.01), and the skin thickness also decreased significantly (P < 0.01).

[0060] Thus, it can be seen that matrine can dose-dependently improve the itching and pain of mice and has excellent effects in the treatment of itching.

[0061] As a humectant, butanediol enhances the skin barrier function and promotes the penetration of active ingredients at the same time; the three plant extracts and the oil-control ingredients act synergistically to improve the problems of oily and sensitive skin from multiple dimensions, including inhibiting the source of sensitive reactions (TRPV1), regulating the inflammatory pathway, and reducing sebum secretion.

[0062] The oil-control active ingredient is a mixture of green tea polyphenols and zinc gluconate, and the mass ratio of the two is 1:1 - 3:1.

[0063] Green tea polyphenols reduce the production of dihydrotestosterone (DHT) by inhibiting the activity of 5α-reductase, thereby reducing the secretion of sebaceous glands;

[0064] Zinc gluconate can adsorb excess sebum, astringe pores, and inhibit the proliferation of Propionibacterium acnes, preventing inflammatory acne caused by oily skin.

[0065] The preparation method of the purslane extract, swertia extract, and sophora flavescens extract includes the following steps:

[0066] (1) Purslane extract: Ultrasonic-assisted extraction is carried out with a water-ethanol mixed solvent, the extraction temperature is 40 - 50 °C, the time is 2 - 3 hours, and it is freeze-dried after concentration;

[0067] (2) Swertia extract: Supercritical CO2 extraction is carried out, the pressure is 25 - 30 MPa, the temperature is 45 - 50 °C, the entrainer is ethanol, and the extraction time is 4 hours;

[0068] (3) Sophora flavescens extract: Microwave-assisted water extraction is carried out, the microwave power is 400 W, the solid-liquid ratio is 1:15, the extraction time is 30 minutes, and it is concentrated after centrifugation.

[0069] The volume ratio of water to ethanol in the water-ethanol mixed solvent is 3:7.

[0070] A preparation method of an oil-control and soothing composite extract includes the following steps:

[0071] a. Weigh the extract powders of each component according to the ratio;

[0072] b. Heat the butanediol to 40 - 45°C, and successively add the purslane extract, the swertia extract, and the sophora flavescens extract, and stir until completely dissolved;

[0073] c. Add the oil-control active ingredient and conduct homogenization treatment;

[0074] d. Filter and sterilize to obtain a transparent and homogeneous composite extract solution.

[0075] Preferably, the homogenization treatment is carried out at a rotation speed of 2000 - 3000 rpm and stirred for 8 - 10 minutes for sufficient mixing.

[0076] Example 1

[0077] A kind of oil-control and soothing composite extract provided by this Example 1 is composed of the following components in weight percentage: purslane extract: 10%; swertia extract: 10%; sophora flavescens extract: 1%; green tea polyphenols: 3%; zinc gluconate: 2%; butanediol: 50%; water: 24%.

[0078] A preparation method of a kind of oil-control and soothing composite extract provided by this Example 1 includes the following steps:

[0079] Extract preparation:

[0080] Purslane extract: Adopt a water-ethanol mixed solvent with a volume ratio of 3:7, ultrasonic-assisted extraction, heat at 45°C for 2.5 hours, and lyophilize after concentration.

[0081] Swertia extract: Supercritical CO2 extraction, at a pressure of 28 MPa and a temperature of 48°C, using ethanol as an entrainer, and the extraction time is 4 hours.

[0082] Sophora flavescens extract: Microwave-assisted water extraction method, microwave power 400 W, solid-liquid ratio 1:15, extract for 30 minutes, and concentrate after centrifugation.

[0083] Composite extract preparation:

[0084] Heat the butanediol to 45°C, successively add the powders of purslane, swertia, and sophora flavescens extracts, and stir until completely dissolved.

[0085] Add green tea polyphenols and zinc gluconate, and conduct homogenization treatment at a rotation speed of 2500 rpm and stir for 10 minutes.

[0086] Filter and sterilize to obtain a transparent solution.

[0087] Apply the obtained transparent solution to high-efficiency essence or first-aid mask according to the addition amount of 3% - 5%.

[0088] Example 2

[0089] The difference between Example 2 and Example 1 provided by the present invention is that a kind of oil-control and soothing compound extract provided in this Example 2 is composed of the following components in percentage by weight:

[0090] Water: 70%; Glycerin: 5%; Sodium hyaluronate: 0.5%; 1,2-Hexanediol: 2%; Xanthan gum: 0.2%; Ethylhexylglycerin: 0.3%; Remainder: Deionized water; It also includes taking 3% of the compound extract prepared in Example 1.

[0091] A preparation method of a kind of oil-control and soothing compound extract provided in this Example 2 includes the following steps:

[0092] Heat the water phase (water, glycerin, sodium hyaluronate) to 50°C and stir until completely dissolved.

[0093] Cool down to 40°C, add the compound extract, 1,2-hexanediol, and xanthan gum, and homogenize and emulsify at a rotation speed of 2000 rpm for 5 minutes.

[0094] Add ethylhexylglycerin, adjust the pH to 5.5, and fill.

[0095] Effect verification:

[0096] Oil-control test: The sebum adsorption rate is increased by 45% after 4 hours.

[0097] Soothe test: After 28 days of use, the erythema area of the subjects is reduced by 40%.

[0098] Example 3

[0099] The difference between Example 3 and Example 1 provided by the present invention is that a kind of oil-control and soothing compound extract provided in this Example 3 is composed of the following components in percentage by weight:

[0100] Water: 60%; Squalane: 8%; Ceramide NP: 2%; Polydimethylsiloxane: 3%; Zinc gluconate: 1%; Butanediol: 5%; Emulsifier (olive oil PEG-7 ester): 2%; Preservative (phenoxyethanol): 0.5%; It also includes taking 1.5% of the compound extract prepared in Example 1.

[0101] A preparation method of a kind of oil-control and soothing compound extract provided in this Example 3 includes the following steps:

[0102] Heat the oil phase (squalane, polydimethylsiloxane, emulsifier) to 70°C.

[0103] Heat the water phase (water, butanediol, ceramide NP) to 70°C, slowly add the oil phase, and homogenize and emulsify at a rotation speed of 3000 rpm for 10 minutes.

[0104] Cool down to 40°C, add the compound extract, zinc gluconate and preservative, stir, cool and then fill.

[0105] Application effect:

[0106] In the clinical feedback, after 14 days, the oil output in the T-zone decreased by 35%, and there was no irritation report. It is suitable for oily and sensitive skin.

[0107] Example 4

[0108] The difference between Example 4 provided by the invention and Example 1 is that a kind of oil-control and soothing compound extract provided by this Example 4 is composed of the following components by weight percentage:

[0109] Water: 80%; Glycerol: 3%; Trehalose: 2%; Hydroxyethyl cellulose: 0.8%; 1,2-Pentanediol: 2%; Pure dew of purslane: 5%; p-Hydroxyacetophenone: 0.2%, and also includes 4% of the compound extract prepared in Example 1.

[0110] A preparation method of a kind of oil-control and soothing compound extract provided by this Example 4 includes the following steps:

[0111] Mix water, glycerol and trehalose, heat to 45°C and stir to dissolve.

[0112] Add hydroxyethyl cellulose and stir until it becomes a transparent gel.

[0113] Cool down to 30°C, add the compound extract, 1,2-pentanediol, pure dew of purslane and preservative in sequence, and fill into the mask cloth.

[0114] Effect verification:

[0115] After applying for 15 minutes, the skin flushing score decreased by 50%, and the oil secretion decreased by 30% within 8 hours.

[0116] It has the effect of immediately soothing the skin flushing symptoms and has a high oil-control persistence.

[0117] Example 5

[0118] The difference between Example 5 provided by the invention and Example 1 is that a kind of oil-control and soothing compound extract provided by this Example 5 is composed of the following components by weight percentage:

[0119] Water: 75%; Shea butter: 5%; Zinc oxide: 3%; Allantoin: 0.5%; Cetearyl alcohol: 2%; 1,2-Hexanediol: 1%; Xanthan gum: 0.3%, and also includes 0.5% of the compound extract prepared in Example 1

[0120] A preparation method of a kind of oil-control and soothing compound extract provided by this Example 5 includes the following steps:

[0121] The oil phase (shea butter, cetearyl alcohol) is heated to 60 °C.

[0122] The aqueous phase (water, zinc oxide, allantoin, xanthan gum) is heated to 60 °C, and after mixing, it is homogenized and emulsified (2500 rpm, 8 minutes).

[0123] The temperature is lowered to 35 °C, the composite extract and 1,2 - hexanediol are added, and after stirring and cooling, it is filled.

[0124] Effect verification: In the skin surface coating test, there is 100% no allergic reaction, and the mildness score is 4.9 / 5.0. It is suitable for the preparation of a mild oil - controlling cream for infants and young children.

[0125] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An oil-control and soothing compound extract, characterized in that, Composed of the following components by weight percentage: Portulaca oleracea extract: 5% - 10%; Swertia mileensis extract: 3% - 10%; Sophora flavescens extract: 0.5% - 1%; Oil-control active ingredient: 1% - 5%, and the oil-control active ingredient is selected from at least one of green tea polyphenols, zinc gluconate, and azelaic acid derivatives; Butylene glycol: 40% - 50%; Water: the balance.

2. The oil-control and soothing compound extract according to claim 1, wherein The oil-control active ingredient is a mixture of green tea polyphenols and zinc gluconate, and the mass ratio of the two is 1:1 - 3:

1.

3. The oil-control and soothing compound extract according to claim 1, wherein The preparation methods of the Portulaca oleracea extract, Swertia mileensis extract, and Sophora flavescens extract include the following steps: (1) Portulaca oleracea extract: Use a water-ethanol mixed solvent for ultrasonic-assisted extraction, extraction temperature 40 - 50 °C, time 2 - 3 hours, concentrate and then freeze-dry; (2) Swertia mileensis extract: Use supercritical CO2 extraction, pressure 25 - 30 MPa, temperature 45 - 50 °C, entrainer is ethanol, extraction time 4 hours; (3) Sophora flavescens extract: Use microwave-assisted water extraction method, microwave power 400 W, solid-liquid ratio 1:15, extraction time 30 minutes, centrifuge and then concentrate.

4. The oil-control and soothing compound extract according to claim 1, characterized in that, The volume ratio of water to ethanol in the water-ethanol mixed solvent is 3:

7.

5. A method for preparing an oil-control and soothing composite extract according to any one of claims 1-4, characterized in that, Including the following steps: a. Weigh each component extract powder according to the proportion; b. Heat butylene glycol to 40 - 45 °C, and sequentially add Portulaca oleracea extract, Swertia mileensis extract, and Sophora flavescens extract, and stir until completely dissolved; c. Add the oil-control active ingredient and carry out homogenization treatment; d. Filter and sterilize to obtain a transparent and homogeneous composite extract solution.

6. The preparation method of an oil-control and soothing compound extract according to claim 5, characterized in that, The homogenization treatment is carried out at a rotation speed of 2000 - 3000 rpm and stirred for 8 - 10 minutes for sufficient mixing.

7. A skin care product comprising the oil-control and soothing compound plant extract according to any one of claims 1-4, characterized in that, The skin care product is essence, lotion or mask, and the addition amount of the composite extract is 0.5% - 5%.

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