Mild multi-effect hovenia dulcis thunb composition, cosmetic composition and preparation method thereof

Abstract

The invention provides a mild multi-effect hovenia dulcis thunb composition, a cosmetic composition and a preparation method thereof, and relates to the technical field of cosmetics. The mild and multi-effect hovenia dulcis thunb composition is prepared from a hovenia dulcis thunb extract, a lapara tree bark extract and a flos magnoliae extract. Through the synergistic effect of all the natural functional components, the mild multi-effect hovenia dulcis thunb composition can meet multiple skin care requirements of oil control, acne resistance and aging resistance at the same time, and compared with an existing solution focusing on a single effect, the mild multi-effect hovenia dulcis thunb composition is more comprehensive and efficient. In addition, natural plant extracts are used as functional components, the effect of the mild and multi-effect hovenia dulcis thunb composition is slightly influenced by individual differences, and compared with chemical synthesis components, the mild and multi-effect hovenia dulcis thunb composition is more suitable for being used by a wide range of people and has higher universality.

Description

Technical Field

[0001] The invention relates to the technical field of cosmetics, and in particular to a mild and multi-effect Hovenia dulcis composition, a cosmetic composition and a preparation method thereof. Background Art

[0002] With the change of modern lifestyle and the impact of environmental pollution, skin problems have become the focus of people's attention. In the field of skin care, oil control, acne removal and anti-aging have become the three core needs. Traditionally, the satisfaction of these needs mainly depends on chemical synthetic ingredients. However, although these ingredients can play a role to a certain extent, they are often not gentle enough for sensitive skin. In addition, the effects of chemical synthetic ingredients vary from person to person, so it is difficult to generalize.

[0003] The chemical ingredients involved in existing solutions mainly include salicylic acid, fruit acid, retinol, etc. Among them, salicylic acid can penetrate deeply into the sebaceous glands, effectively inhibit oil secretion and shrink pores, but its strong irritation often deters sensitive skin and may cause adverse reactions such as redness, swelling, and stinging; fruit acid (α-hydroxy acid) has a high concentration of exfoliating effect. If used improperly, it may cause damage to the skin barrier and make the skin more sensitive; although retinol has a significant therapeutic effect on acne, it is highly irritating and can easily cause skin sensitivity reactions.

[0004] From the above, we can see that although the use of existing chemical ingredients can meet the needs of skin oil control, acne removal and anti-aging to a certain extent, their unfriendliness to sensitive skin, individual differences in effects and the limitations of a single function have prompted us to urgently seek new ways of skin care that are more comprehensive, gentle and effective. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention discloses a mild and multi-effect Hovenia dulcis composition, a cosmetic composition and a preparation method thereof. The mild and multi-effect Hovenia dulcis composition uses natural plant extracts in the preparation of cosmetics, has a mild texture and multi-effects, and can solve the problems of being unfriendly to sensitive skin, individual differences and single efficacy limitations when using chemical ingredients to solve skin problems in the prior art.

[0006] In order to achieve the above technical objectives, on the one hand, the present invention proposes a mild and multi-effect Hovenia dulcis composition, which comprises Hovenia dulcis extract, Lapacho bark extract and Primrose imbricata flower extract.

[0007] Hovenia dulcis belongs to the genus Hovenia. There are three species worldwide: Hovenia dulcis, Hovenia dulcis and Hovenia tricholoma. There are also two variants: Hovenia dulcis and Hovenia tricholoma. Hovenia dulcis is a traditional Chinese medicinal material with a flat nature and sweet taste. It was first recorded in the "Tang Materia Medica". It has rich chemical components, mainly including flavonoids, triterpenes and saponin compounds. Modern pharmacological studies have shown that Hovenia dulcis has multiple active effects such as alcohol detoxification and liver protection, anti-tumor, anti-inflammatory, and anti-lipid peroxidation. In addition, Hovenia dulcis has been certified by the National Health Commission of China as a Chinese medicine for both medicinal and edible purposes, and is widely used in beverages and tea substitutes. However, its application in skin care products is still in its infancy, and its specific mechanism of action and efficacy are not yet fully understood.

[0008] Hovenia dulcis fruit extract is a natural plant extract extracted from Hovenia dulcis fruit, also known as Hovenia dulcis fruit extract. The research and development team of the present invention unexpectedly discovered through exploratory experiments that Hovenia dulcis fruit extract can effectively inhibit 5α-reductase activity and reduce the excessive activity of sebaceous glands, and has excellent oil control effect, thereby effectively balancing sebum secretion, improving skin problems caused by excessive oil secretion, and preventing acne on the skin; in the above technical scheme, the natural and mild Hovenia dulcis fruit extract will not cause irritation and discomfort to sensitive skin. Compared with chemical synthetic ingredients, it is more suitable for solving oil control problems of various skin types, especially sensitive skin, and can show a more stable and consistent skin oil control effect in a wider range of individuals. The embodiment of the present invention shows the technical effect of Hovenia dulcis fruit extract inhibiting 5α-reductase activity, effectively balancing sebum secretion and improving skin problems caused by excessive oil secretion.

[0009] The research and development team further explored and found that the aqueous formula cosmetic composition containing Hovenia dulcis extract has a better refreshing feeling after application than the traditional emulsified formula cosmetic composition, which is beneficial to meet the oil control needs of skin, especially oily skin; but at the same time, the aqueous formula cosmetic composition containing Hovenia dulcis extract also shows some shortcomings, which is specifically manifested in that consumers feel a little dryness when applying it. The composition proposed by the above technical scheme of the present invention is innovatively composed of Hovenia dulcis extract, Lapacho bark extract and Primrose grandiflora flower extract, among which the oil-soluble Lapacho bark extract effectively alleviates the astringency brought by Hovenia dulcis extract, and Primrose grandiflora flower extract can provide a good moisturizing effect for the formula. The synergistic optimization of these three natural plant extracts can improve the comfort of the hydrolyzed formula cosmetics containing Hovenia dulcis extract; the composition is more friendly to sensitive skin, milder than traditional chemical ingredients, less likely to cause irritation and discomfort, and can meet diverse skin care needs.

[0010] Among them, the Lapacho tree (TABEBUIA IMPETIGINOSA) bark extract is made from the bark of the Lapacho tree, which is dried, ground, and freeze-ground before being extracted with rapeseed oil and polyglycerol-3-diisostearate, and then filtered and centrifuged; the Magnolia Biondii (MAGNOLIA BIONDII) flower extract is made from the flowers of the Magnolia Biondii as raw material, and is prepared through alcohol extraction, filtration and centrifugation.

[0011] Furthermore, the mass ratio of Hovenia dulcis extract, Lapacho bark extract, and Primula fischeri flower extract in the mild and multi-effect Hovenia dulcis composition is (0.01-4): (0.01-1): (0.01-5). The present invention shows the stability of the mild and multi-effect Hovenia dulcis composition containing Hovenia dulcis extract, Lapacho bark extract, and Primula fischeri flower extract in different ratios.

[0012] Furthermore, the mild and multi-effective Hovenia dulcis composition also includes a solubilizer, which is PEG-20 glyceryl isostearate. Adding PEG-20 glyceryl isostearate to the mild and multi-effective Hovenia dulcis composition can effectively promote uniform mixing of the components and improve the stability of the system.

[0013] Furthermore, the mass ratio of the Lapacho bark extract to the solubilizing agent in the mild and multi-effect Hovenia dulcis composition is (0.01-1): (0.1-12).

[0014] Furthermore, the preparation method of the Hovenia dulcis extract comprises the following steps:

[0015] Step (1): crushing the fruit of Hovenia dulcis, passing through a 180-250 mesh sieve, adding it to an ethanol solution, stirring and extracting it for 1.5-3 hours, and recycling the extraction twice to obtain an extraction supernatant;

[0016] Step (2): The extraction supernatant is concentrated in a concentrator for 0.5 to 1.5 hours to obtain the Hovenia dulcis fructus extract.

[0017] In a further example of the present invention, the step (2) further comprises freeze-drying the concentrated Hovenia dulcis chinensis extract to obtain a powdered Hovenia dulcis chinensis extract.

[0018] On the other hand, the present invention provides the use of the mild and multi-effect Hovenia dulcis composition in the preparation of cosmetics.

[0019] Optionally, the cosmetic is a cosmetic that inhibits the activity of 5α-reductase. It should be noted that the present invention does not limit the type and form of the cosmetic, which can be water, emulsion, cream, mask, gel, essence, etc., but is not limited to the listed types. Those skilled in the art can use the composition of the present invention in the preparation of other cosmetics applied to the skin through non-creative labor, and the technical solutions formed thereby are all within the protection scope of the present invention.

[0020] On the other hand, the present invention provides a cosmetic composition, which comprises the mild and multi-effect Hovenia dulcis composition and a thickener, a moisturizer, an antioxidant, a pH regulator, and a chelating agent; wherein the content of the Hovenia dulcis extract in the cosmetic composition is 0.01wt% to 4wt%. The addition of these auxiliary ingredients can further enhance the efficacy of the mild and multi-effect Hovenia dulcis composition, and improve the stability, effectiveness and safety of the mild and multi-effect Hovenia dulcis composition.

[0021] Furthermore, the content of the Hovenia dulcis fructus extract in the cosmetic composition is 1 wt % to 3 wt %, and more preferably 1 wt %.

[0022] Furthermore, the contents of the Lapacho bark extract and the Primrose oil flower extract are 0.01 wt% to 1 wt% and 0.01 wt% to 5 wt% respectively.

[0023] Furthermore, the thickener is at least one of carbomer, acrylates / C10-30 alkyl acrylate cross-linked polymer, ammonium acryloyldimethyltaurate / VP copolymer, and xanthan gum.

[0024] Furthermore, the moisturizer includes at least one of glycerin, butylene glycol, ethylhexylglycerin, polysaccharides, sodium polyglutamate, betaine, diglycerin, pentylene glycol, soybean seed extract, bis-PEG-18 methyl ether dimethyl silane, and sodium hyaluronate; preferably, the polysaccharide includes biosaccharide gum, hyaluronic acid, and sodium hyaluronate.

[0025] Furthermore, the antioxidant includes at least one of p-hydroxyacetophenone, caprylhydroxamic acid, and rosemary leaf extract.

[0026] Furthermore, the pH regulator includes at least one of citric acid, lactic acid, arginine, tromethamine, sodium hydroxide and potassium hydroxide.

[0027] Furthermore, the chelating agent includes at least one of disodium ethylenediaminetetraacetate, tetrasodium ethylenediaminetetraacetate, and sodium citrate.

[0028] Furthermore, the cosmetic composition contains 0.1wt% to 0.5wt% of thickener, 5wt% to 15wt% of moisturizer, 0.25wt% to 1.5wt% of antioxidant, 0.1wt% to 1wt% of pH adjuster, and 0.01wt% to 0.2wt% of chelating agent.

[0029] Another aspect of the present invention provides a method for preparing the above-mentioned cosmetic composition, comprising the following steps:

[0030] S1, dissolving the moisturizer, the thickener, the chelating agent and the antioxidant in deionized water to obtain material A, and maintaining the temperature of the material A not exceeding 80° C.;

[0031] S2, mixing the Lapacho bark extract and the solubilizing agent to obtain material B;

[0032] S3, cooling the material A to below 50° C., adding a pH adjuster, and adjusting the pH value of the mixture to 5.0-7.0;

[0033] S4, continue to cool the mixture obtained in step S3, add the material B, the Hovenia dulcis extract and the Archangelica dahurica flower extract when the temperature of the mixture is lower than 45°C, mix well and then cool to no higher than 40°C for discharging.

[0034] It should be noted that the execution order of step S1 and step S2 is limited. The present invention does not limit the specific operation of reducing the temperature of the mixture in step S3 and step S4, such as stirring cooling, stirring freezing cooling or freezing cooling, which can be selected according to needs in actual operation.

[0035] Compared with the prior art, the beneficial effects of the present invention are as follows: the mild and multi-effect Hovenia dulcis composition of the present invention, which comprises Hovenia dulcis extract, Lapacho bark extract and Magnolia officinalis flower extract, has multiple effects of oil control, anti-acne and anti-aging; the synergistic effect of each natural functional component enables the mild and multi-effect Hovenia dulcis composition of the present invention to take into account multiple skin care needs at the same time, which is more comprehensive and efficient than the existing solutions that focus on a single effect. In addition, the mild and multi-effect Hovenia dulcis composition of the present invention uses natural plant extracts as functional components, and its effects are less affected by individual differences. Compared with chemically synthesized ingredients, it is more suitable for use by a wide range of people and has higher universality.

[0036] The preparation method of the cosmetic composition comprising the mild and multi-effect Hovenia dulcis composition of the present invention is simple and efficient, has strong operability, and has good promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0038] Figure 1 A stability comparison chart of the cosmetic compositions of Example 1 and Comparative Example 1 is shown. DETAILED DESCRIPTION

[0039] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below, and preferred embodiments of the present invention are given. However, it should be understood that these embodiments are only used for more detailed description and should not be understood as limiting the present invention in any form, i.e., not intended to limit the scope of protection of the present invention.

[0040] Unless otherwise defined, the technical terms used in the following examples have the same meanings as those generally understood by those skilled in the art to which the present invention belongs. The test reagents used in the following examples, unless otherwise specified, are all conventional biochemical reagents; the experimental methods, unless otherwise specified, are all conventional methods.

[0041] Exploration Example 1

[0042] This exploratory example shows a method for preparing a Hovenia dulcis chinensis extract. Specifically, Hovenia dulcis chinensis from the Qinling Mountains in Shaanxi Province, China is dried and crushed to pass through a 200-mesh sieve; 1 kg of the sieved powder is weighed and put into an extraction kettle containing 60% ethanol at a solid-liquid ratio of 1:10 (w / v), and the mixture is stirred and extracted at room temperature for 2 hours, the extraction is repeated twice, and the supernatant is filtered to obtain the extract; the supernatant is put into a concentrator and concentrated at room temperature for 1 hour, followed by freeze-drying to obtain the Hovenia dulcis chinensis extract in powder form.

[0043] Furthermore, in this experiment, different concentrations of Hovenia dulcis extract sample groups were set up, and enzyme control group, blank control group and positive control group were set up. Sample working solution, 5α-reductase solution, NADPH solution and testosterone solution were added in sequence, and the initial absorbance value (A0) was measured at 340 nm. After incubation at 37°C for 20 minutes, the end point absorbance value (A 20 ); by correcting the background signal of the blank control, the absorbance change (ΔA) of the sample group and the enzyme control group was calculated, and the 5α-reductase activity inhibition rate was calculated according to the formula to evaluate the effect of Hovenia dulcis extract on 5α-reductase activity, and the reliability of the experimental system was verified by using the positive control. The calculation formula is as follows:

[0044]

[0045] The test results are shown in Table 1.

[0046] Table 1

[0047] Group 5α-reductase enzyme activity inhibition rate (%) BC 0.00 PC 73.44 Hovenia dulcis extract (3%) 97.34 Hovenia dulcis extract (concentration 1%) 90.73％ Hovenia dulcis extract (concentration 0.1%) 18.16 Hovenia dulcis extract (concentration 0.01%) 5.47

[0048] 5α-reductase is a key enzyme in androgen metabolism, which can convert testosterone into more active dihydrotestosterone (DHT). When the level of dihydrotestosterone is too high, it will accelerate the proliferation of sebaceous gland cells and the synthesis of sebum, resulting in increased oil production on the skin, and may even cause skin problems such as acne. Table 1 shows that the mass concentration of Hovenia dulcis extract in the range of 0.01%-3% can inhibit the activity of 5α-reductase, so applying Hovenia dulcis extract to the skin can reduce the production of dihydrotestosterone in skin cells, thereby reducing the proliferation of sebaceous gland cells and the synthesis rate of sebum, further helping to reduce the oil secretion of the skin and keep the skin fresh; preferably, when the concentration of Hovenia dulcis extract is 1%-3%, the inhibition rate of 5α-reductase activity can reach more than 90.73%.

[0049] Exploration Example 2

[0050] Based on the findings of Exploration Example 1, the research and development team of the present invention further explored the efficacy of a cosmetic composition containing Hovenia dulcis extract. Specifically:

[0051] Exploration Example 2.1

[0052] A cosmetic composition comprises, by mass, 1% of the Hovenia dulcis extract prepared in Exploration Example 1, 1% of jojoba seed oil, 2% of meadowfoam seed oil, 2% of cyclohexasiloxane, 0.5% of polysorbate-80, 1% of caprylic / capric triglyceride, 0.16% of carbopol 980, 0.24% of ammonium acryloyldimethyltaurate / VP copolymer AVC, 0.02% of xanthan gum, 0.08% of EDTA-2Na, 0.05% of hyaluronic acid, 4% of butylene glycol, 0.5% of glycerol, 0.4% of hexylene glycol, 0.4% of p-hydroxyacetophenone SSH, 1% of bis-PEG-18 methyl ether dimethyl silane SW-75, 0.5% of betaine, 0.128% of arginine, and the remainder is water.

[0053] Exploration Example 2.2

[0054] A cosmetic composition comprises, by mass, 1% of the Hovenia dulcis extract prepared in Exploration Example 1, 0.16% of Carbopol 980, 0.24% of ammonium acryloyldimethyltaurate / VP copolymer AVC, 0.02% of xanthan gum, 0.08% of EDTA-2Na, 0.05% of hyaluronic acid, 4% of butylene glycol, 0.5% of glycerol, 0.4% of hexylene glycol, 0.4% of p-hydroxyacetophenone SSH, 1% of bis-PEG-18 methyl ether dimethyl silane SW-75, 0.5% of betaine, 0.128% of arginine, 0.5% of soybean seed extract, and the remainder of water.

[0055] This exploratory example tests the oil control effect, absorbency, freshness, and comfort after use of the cosmetic composition products of Exploration Example 2.1 and Exploration Example 2.2. Specifically, 72 subjects with oily skin were selected to use these two cosmetic composition products once a day in the morning and evening for 7 consecutive days. The efficacy of the samples was evaluated from the perspectives of oil control, absorbency, dryness, and astringency. The test adopts a 5-point system for self-evaluation, and the average score is taken to compare the effects between the samples. The results are shown in Table 2.

[0056] Table 2

[0057]

[0058] Exploration Example 2.1 uses a traditional emulsified formula, while Exploration Example 1.2 is a non-emulsified aqueous formula. Table 2 confirms that: (1) The use of Hovenia dulcis extract in the preparation of cosmetic compositions can exert a stable oil control effect, as shown in the fact that the scores of "facial oiliness slows down" given by the subjects who applied the products of Exploration Example 2.1 and Exploration Example 2.2 are relatively close; (2) Compared with the traditional emulsified formula (Exploration Example 2.1) product, the non-emulsified aqueous formula (Exploration Example 2.2) product has a better refreshing feeling when applied, as shown in ① The score of "facial greasiness is reduced" given by the subjects who applied the product of Exploration Example 2.2 is higher than that of the subjects who applied the product of Exploration Example 2.1 ② The scores of the "absorbency" and "freshness" indicators of the product of Exploration Example 2.2 were higher than those of the product of Exploration Example 2.1; therefore, the aqueous cosmetic composition containing the extract of Hovenia dulcis can better meet the needs of skin oil control, especially oily skin; (3) However, it is worth noting that compared with the traditional emulsified formula and the product of Exploration Example 2.1, the subjects who applied the product of Exploration Example 2.2 felt a slight dryness after application, which affected the comfort of application of the product of Exploration Example 2.2.

[0059] Based on the findings of the above exploratory experiments, the research and development team proposed a mild and multi-effect Hovenia dulcis composition, which includes Hovenia dulcis extract, Lapacho bark extract and Primrose imbricata flower extract. The oil-soluble Lapacho bark extract in the composition can effectively alleviate the astringency caused by the Hovenia dulcis extract, while the Primrose imbricata flower extract can provide a good moisturizing effect for the formula. The mild and multi-effect Hovenia dulcis composition of the present invention enables consumers to experience a dry and non-greasy effect while enjoying good moisturizing and soft feeling.

[0060] Example 1

[0061] In order to improve the applicability of the mild and multi-effect Hovenia dulcis composition of the present invention and avoid the limitations of traditional emulsified formulas, this example explores the ratio of Hovenia dulcis extract, Lapacho bark extract and Magnolia officinalis flower extract in the mild and multi-effect Hovenia dulcis composition of the present invention to improve the solubility of the three, so that they can be better compatible in the emulsifier-free essence formula, thereby improving the stability of the efficacy of the mild and multi-effect Hovenia dulcis composition of the present invention.

[0062] Example 1.1

[0063] A method for preparing a mild and multi-effect Hovenia dulcis composition, specifically, mixing 1 part of Lapacho bark extract with 10 parts of PEG-20 glyceryl isostearate in a mass ratio of 1:12 at room temperature, stirring for 5 minutes to evenly disperse the Lapacho bark extract in the PEG-20 glyceryl isostearate; then slowly adding 87 parts of deionized water and stirring for 5 minutes until uniform. Subsequently, a pH adjuster is added to adjust the pH to between 5 and 7, and 1 part of Hovenia dulcis extract and 1 part of Flos dasyphylla extract are slowly added under stirring, and the mild and multi-effect Hovenia dulcis composition is obtained by stirring for 5 minutes. The mass ratio of the Lapacho bark extract, the Hovenia dulcis extract, and the Flos dasyphylla extract is 1:1:1.

[0064] The brand of the Lapacho bark extract product used in this embodiment is Lubrizol, and the mass content of the Lapacho bark extract in the product is 9-11%; the Forsythia suspensa flower extract product used in this embodiment is produced by Jiakai Biotechnology Co., Ltd., and the mass content of the Forsythia suspensa flower extract in the product is 10-15%; it should be noted that the contents of the Lapacho bark extract and the Forsythia suspensa flower extract described in the embodiments of the present invention refer to the contents of the extracts themselves, rather than the dosage of the corresponding products.

[0065] Example 1.2

[0066] The preparation method of this embodiment is the same as that of embodiment 1.1, except that, compared with embodiment 1.1, the addition amount of PEG-20 glyceryl isostearate in this embodiment is changed. The specific parameter control is shown in Table 3.

[0067] Comparative Example 1.1 to Comparative Example 1.6

[0068] The preparation method is the same as that of Example 1.1, except that different weight portions of PEG-20 glyceryl isostearate are added in the comparative example, or the same or different weight portions of PPG-26 butaneth-26 / PEG-40 hydrogenated castor oil are added. The specific parameter control is shown in Table 3.

[0069] Furthermore, in this example, the uniformity and stability of each cosmetic composition in Example 1 and Comparative Example 1 after preparation were tested, and the results are as follows: Figure 1 As shown in Table 3.

[0070] Table 3

[0071]

[0072] Note: In the table, “√” represents a stable system, and the difference in the number of √s shows the difference in the clarity and transparency of the composition. The greater the number, the clearer and more transparent the composition is; “×” represents an unstable system, and the composition begins to become turbid.

[0073] Combination Figure 1 As can be confirmed from Table 3, when the ratio of Lapacho bark extract and solubilizer is the same, for example, when the mass ratio of Lapacho bark extract: solubilizer is 1:10 and 1:12, the system of the mild and multi-effect Hovenia dulcis composition obtained by adding the solubilizer PEG-20 glyceryl isostearate is clearer and more transparent, and has better uniformity. Therefore, the solubilizer PEG-20 glyceryl isostearate is more suitable for stabilizing the mild and multi-effect Hovenia dulcis composition comprising Hovenia dulcis extract, Lapacho bark extract and Flos citriodora flower extract of the present invention.

[0074] Furthermore, based on the preparation method of the mild and multi-effect Hovenia dulcis composition shown in Example 1.1, this example explores the changes in the addition amounts of Hovenia dulcis extract, Lapacho bark extract and Magnolia officinalis flower extract, as well as the uniformity and stability of the cosmetic composition after preparation. The specific parameter control and stability results are shown in Table 4.

[0075] Table 4

[0076]

[0077]

[0078] Note: "√" represents that the system is stable and the state of the composition is clear and transparent, and "×" represents that the system is unstable and the state of the composition begins to become turbid. Table 4 shows that the mass ratio of the Hovenia dulcis extract, the Lapacho bark extract, and the Magnolia officinalis flower extract in the mild and multi-effect Hovenia dulcis composition of the present invention is (0.01-4): (0.01-1): (0.01-5). The mass ratio of the Lapacho bark extract to the solubilizing agent in the mild and multi-effect Hovenia dulcis composition of the present invention is (0.01-1): (0.1-12).

[0079] Further, this example tests the thermal stability of the mild and multi-effect Hovenia dulcis composition of Examples 1.1 to 1.16. Specifically, the stability test was conducted at room temperature -5°C, 25°C and 45°C, and the test method included observing the physical state changes of the sample under these temperature conditions, such as the appearance of turbidity, stratification or precipitation, to evaluate its stability. The results are shown in Table 5.

[0080] Table 5

[0081]

[0082]

[0083] Note: "√" indicates that the system is stable and the composition is clear and transparent; "×" indicates that the system is unstable and the composition begins to become turbid. Table 5 shows that the mild and multi-effect Hovenia dulcis composition of the present invention has excellent thermal stability in the temperature range of -5°C to 45°C, and has a wide range of application fields and applicable scenarios.

[0084] Example 2

[0085] Example 2.1

[0086] This embodiment shows a method for preparing a cosmetic composition, which is an essence composition for oil control and skin care. The mass ratio of the extract of Hovenia dulcis, the extract of Flos Amomi and the bark extract of Lapacho tree in the cosmetic composition is shown in Table 6, and other components include: Carbopol 980 0.16%, ammonium acryloyldimethyltaurate / VP copolymer AVC 0.24%, xanthan gum 0.02%, EDTA-2Na 0.08%, hyaluronic acid 0.05%, butylene glycol 4%, glycerol 0.5%, hexylene glycol 0.4%, p-hydroxyacetophenone SSH 0.4%, bis-PEG-18 methyl ether dimethyl silane SW-751%, betaine 0.5%, arginine 0.128%, wild soybean seed extract 0.5%, and the rest is water. The mass ratio of PEG-20 glyceryl isostearate to the bark extract of Lapacho tree is 1:10.

[0087] The specific preparation method is as follows: add a moisturizer (butylene glycol, glycerin, etc., wild soybean seed extract), a thickener (Carbopol 980, AVC), and a chelating agent (EDTA-2Na) to deionized water, heat and stir at a temperature not exceeding 80°C until the mixture is uniform and free of insoluble matter, thereby obtaining material A; mix the Lapacho bark extract and the solubilizer (PEG-20 glyceryl isostearate) in a mass ratio of 1:10 to obtain material B; when material A is cooled to below 50°C, a pH adjuster (arginine) is added to adjust the pH to 5.0-7.0; when the temperature is further cooled to below 45°C, material B, Hovenia dulcis extract and Flos dasyphyllae extract are added to the material A after adjusting the pH value, and the mixture is stirred uniformly until there is no insoluble matter; finally, the temperature is further cooled to below 40°C to discharge the material, thereby obtaining an essence composition.

[0088] Example 2.2

[0089] This example proposes another method for preparing a cosmetic composition. The preparation process and material composition of the preparation method are the same as those of Example 1.1, except that the mass ratios of the Hovenia dulcis extract, the Magnolia officinalis flower extract, and the Lapacho bark extract are different, and the specific proportions are shown in Table 6.

[0090] Comparative Example 2.1 to Comparative Example 2.4

[0091] Comparative Examples 2.1 to 2.4 disclose an essence composition, respectively. The preparation method and components of the essence composition are the same as those of the essence composition of Example 1.1, except that the mass ratios of Hovenia dulcis extract, Magnolia officinalis flower extract and Lapacho bark extract are different, and the specific ratios are shown in Table 6. It should be noted that when Lapacho bark extract is not added in Comparative Example 2, there is no step of preparing material B in its preparation method.

[0092] Table 6

[0093]

[0094] In this embodiment, the oil control effects of the essence compositions of Example 2 and Comparative Example 2 were compared and tested. The specific method is to recruit 216 consumers who self-assessed as sensitive skin and had oily skin problems, and randomly divide them into six groups, 36 people in each group. Each group used the essence composition of Example 2 or Comparative Example 2, once a day in the morning and evening, and after 7 consecutive days of use, the oil release speed and the all-day oil control effect were evaluated through consumer evaluation. The experiment adopted a 5-point system for self-evaluation, and the average score was taken to compare the effects between the samples. The specific evaluation results are shown in Table 7.

[0095] Table 7

[0096]

[0097] It can be confirmed from Table 7 that the cosmetic compositions of Examples 2.2 and 2.2 perform more prominently in these indicators, especially Example 2.2 has the best effect, which verifies that the cosmetic composition of the present invention has better comprehensive efficacy in skin oil control; by comparing the indicators of "facial comfort after use" and "satisfaction with the sample", it can be seen that the facial comfort and subject satisfaction score after application of the cosmetic composition of Example 2 are better than those of Comparative Example 2, which further confirms that the combination of the three active substances of Hovenia dulcis extract, Lapacho bark extract and Magnolia officinalis flower extract in the technical scheme of the present invention can stably exert the skin oil control effect while eliminating the astringency after application of the cosmetic composition of Comparative Example 2.1, thereby synergistically improving the use experience of the cosmetic composition of the present invention.

[0098] Furthermore, this example tests the anti-aging performance of the oil-control skin care essence composition of Example 2.2. Specifically, 30 female consumers who considered themselves to have sensitive skin, wrinkles at the corners of the eyes, oily and sagging faces, aged between 20 and 45 years old, were recruited to use the product for 28 days, twice a day, and fill in self-assessment information to agree with the improvement of wrinkles, product safety, and the improvement effect on firming and oily skin. The test results are shown in Table 8.

[0099] Table 8

[0100] Serial number Firmer skin Reduce eye wrinkles Reduce facial oiliness Enhanced skin comfort Security Example 1.2 93.75％ 96.88％ 93.75％ 100％ 100％

[0101] The test results in Table 8 show that there is no adverse skin reaction when using the oil-control skin care essence composition of this embodiment, and the wrinkles around the eyes and the greasy feeling on the face of consumers are improved, and the firmness and comfort of the skin are improved. In summary, it can be confirmed that the cosmetic composition of the present invention can have excellent skin oil control effect, and has the effect of improving wrinkles and firming, and has good anti-aging performance; the application experience is very gentle and suitable for sensitive skin.

[0102] It should be noted that the above contents are further detailed descriptions of the present invention in combination with specific implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple improvements can be made without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. A mild and multi-effect Hovenia dulcis composition, characterized in that: Includes Hovenia dulcis seed extract, Lapacho bark extract and Primrose mays flower extract.

2. The mild and multi-effect Hovenia dulcis composition according to claim 1, characterized in that: The mass ratio of the Hovenia dulcis extract, the Lapacho bark extract and the Primrose imbricata flower extract in the mild and multi-effect Hovenia dulcis composition is (0.01-4): (0.01-1): (0.01-5).

3. The mild and multi-effect Hovenia dulcis composition according to claim 2, characterized in that: The mild and multi-effect Hovenia dulcis composition further comprises a solubilizer, which is PEG-20 glyceryl isostearate.

4. The mild and multi-effect Hovenia dulcis composition according to any one of claims 1 to 3, characterized in that: The preparation method of the Hovenia dulcis extract comprises the following steps: (1) crushing the fruit of Hovenia dulcis, passing it through a 180-250 mesh sieve, adding it to an ethanol solution, stirring and extracting it for 1.5-3 hours, and recycling the extraction twice to obtain an extraction supernatant; (2) The extraction supernatant is concentrated in a concentrator for 0.5 to 1.5 hours to obtain the Hovenia dulcis fruit extract.

5. Use of the mild and multi-effect Hovenia dulcis composition according to any one of claims 1 to 4 in the preparation of cosmetics.

6. A cosmetic composition, characterized in that The cosmetic composition comprises the mild and multi-effect Hovenia dulcis composition according to any one of claims 1 to 4, as well as a thickener, a moisturizer, an antioxidant, a pH adjuster, and a chelating agent; Wherein, the content of the Hovenia dulcis chinensis extract in the cosmetic composition is 0.01 wt % to 4 wt %.

7. The cosmetic composition according to claim 6, characterized in that The contents of the Lapacho bark extract and the Primrose Mayfair flower extract are 0.01 wt% to 1 wt% and 0.01 wt% to 5 wt% respectively.

8. The cosmetic composition according to claim 6, characterized in that The thickener comprises at least one of carbomer, acrylates / C10-30 alkyl acrylate cross-linked polymer, ammonium acryloyldimethyltaurate / VP copolymer, and xanthan gum; The moisturizing agent includes at least one of glycerin, butylene glycol, ethylhexylglycerin, polysaccharides, sodium polyglutamate, betaine, diglycerin, pentylene glycol, soybean seed extract, bis-PEG-18 methyl ether dimethyl silane, and sodium hyaluronate; The antioxidant comprises at least one of p-hydroxyacetophenone, caprylhydroxamic acid, and rosemary leaf extract; The pH regulator includes at least one of citric acid, lactic acid, arginine, tromethamine, sodium hydroxide, and potassium hydroxide; The chelating agent includes at least one of disodium ethylenediaminetetraacetate, tetrasodium ethylenediaminetetraacetate, and sodium citrate.

9. The cosmetic composition according to any one of claims 6 to 8, characterized in that The cosmetic composition contains 0.1 wt% to 0.5 wt% of thickener, 5 wt% to 15 wt% of moisturizer, 0.25 wt% to 1.5 wt% of antioxidant, 0.1 wt% to 1 wt% of pH adjuster, and 0.01 wt% to 0.2 wt% of chelating agent.

10. The method for preparing the cosmetic composition according to any one of claims 6 to 9, characterized in that: The following steps are involved: S1, dissolving the moisturizer, the thickener, the chelating agent and the antioxidant in deionized water to obtain material A, and maintaining the temperature of the material A not exceeding 80° C.; S2, mixing the Lapacho bark extract and the solubilizing agent to obtain material B; S3, cooling the material A to below 50° C., adding a pH adjuster, and adjusting the pH value of the mixture to 5.0-7.0; S4, continue to cool the mixture obtained in step S3, add the material B, the Hovenia dulcis extract and the Archangelica dahurica flower extract when the temperature of the mixture is lower than 45°C, mix well and then cool to no higher than 40°C for discharging.

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