A natural oil-wood ash alkali composite barrier repair cleansing composition and its preparation method and application

Abstract

The application discloses a natural oil-wood ash alkali composite barrier repair cleansing composition and a preparation method and application thereof, and belongs to the technical field of cleansing compositions. The technical problem to be solved is to provide a mild, non-irritating and synchronous cleansing and repair cleansing composition and a preparation method and application thereof. The technical solution points are as follows: the barrier repair cleansing composition comprises the following raw materials: quinoa straw wood ash lye, camellia seed oil, avocado seed oil, potassium cocoyl glycinate, honey, C8-C10 short-chain fatty acid extracted from coconut oil by fractional distillation and C8-C10 short-chain fatty acid sodium salt extracted from coconut oil by fractional distillation.

Description

Technical Field

[0001] This invention belongs to the field of cosmetic technology, specifically relating to a barrier-repairing facial cleanser composition based on natural oils and plant ash alkali, its preparation method, and its application. Background Technology

[0002] Facial cleansing is a fundamental step in skincare. For individuals with compromised skin barrier function (such as those with sensitive or damaged skin), the gentleness and repairing properties of cleansing products directly impact the stability of their skin condition. These individuals often experience incomplete skin barrier structure, lipid loss, and low tolerance, making them highly susceptible to external stimuli and prone to discomfort such as redness, dryness, itching, stinging, and tightness. Therefore, their core needs for cleansing products focus on two key aspects: "gentle and non-irritating" and "simultaneous cleansing and repair." The products must effectively remove facial oil, dirt, and daily sunscreen residue without damaging the skin barrier, while simultaneously helping to repair the damaged barrier and alleviate sensitivity and discomfort.

[0003] Currently, most facial cleansing products on the market use surfactants as their core cleansing ingredient, mainly falling into three categories: soap-based, amino acid-based, and compound-based. Soap-based cleansing products are too strong; their highly alkaline system can damage the skin's slightly acidic sebum film, accelerating lipid loss and further exacerbating skin barrier damage, making them unsuitable for sensitive or damaged skin. While amino acid-based cleansing products offer some gentleness, their cleansing power is weak, making it difficult to thoroughly remove facial residue. Furthermore, most of these products lack effective repairing ingredients, only achieving basic cleansing and failing to meet the repair needs of those with damaged skin barriers. Long-term use may still lead to recurring skin sensitivity due to incomplete cleansing or insufficient repair.

[0004] Chinese invention patent CN111557874B discloses a biomimetic skin barrier repair composition containing camellia extract and its application. The skin barrier repair composition comprises the following components: a sebum film repair component: squalene, fatty acids, triglycerides, and cholesterol analogs; an intercellular matrix component: free fatty acids, ceramides, and cholesterol analogs; and synergistic components: soothing and anti-inflammatory ingredients, anti-aging ingredients, whitening ingredients, and skin penetrants. The sebum film repair and intercellular matrix components are composed of camellia extract, flaxseed oil, oat kernel oil, squalane, phytosterols, and ceramide 3. This patent suffers from complex components, high raw material costs, and focuses only on repairing the skin barrier without addressing the facial cleansing efficacy of the composition.

[0005] Chinese invention patent application CN119185086A discloses a cleansing composition specifically designed for sensitive skin and its preparation method. The cleansing composition includes the following components: glycerin, stabilizer, skin conditioning components, sodium cocoyl glycinate dry powder, disodium cocoyl glutamate, sodium cocoyl glycinate solution, and betaine-type surfactant. Although the above patent application is aimed at cleansing sensitive skin, it does not focus on the repairing effect of the cleansing composition on sensitive skin.

[0006] Therefore, in response to the need for "gentle and non-irritating + simultaneous cleansing and repair" facial cleansing for people with poor skin barrier function (sensitive skin, damaged skin), this invention provides a barrier repair facial cleansing composition with fine foam, gentle cleansing, and strong repairing power. Summary of the Invention

[0007] The purpose of this invention is to provide a barrier-repairing facial cleanser composition based on natural oils and plant ash alkali, its preparation method and application, in order to solve technical problems such as imbalance between cleansing and repair, high cost of facial cleanser compositions, or combinations thereof.

[0008] Terminology Explanation: Unless otherwise defined, all technical terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which this subject matter pertains. Unless otherwise stated, all patents, patent inventions, and disclosures cited throughout this document are incorporated herein by reference in their entirety. Where multiple definitions exist for terms herein, the definitions provided in this chapter shall prevail.

[0009] It should be understood that the above brief description and the following detailed description are exemplary and for illustrative purposes only, and do not limit the subject matter of the invention in any way. In this invention, the singular is used in conjunction with the plural unless otherwise specifically stated. It should also be noted that, unless otherwise stated, the use of “or” or “or” means “and / or”. Furthermore, the use of the term “comprising” and other forms such as “including,” “containing,” and “contains” are not limiting.

[0010] Definitions of terms related to raw materials of traditional Chinese medicine can be found in the reference "Pharmacopoeia of the People's Republic of China (2020 Edition): China Medical Science and Technology Press: May 2020: 1st Edition".

[0011] Unless otherwise stated, conventional methods within the scope of the art shall be used.

[0012] Unless specifically defined herein, the use of all commercially available products herein employs standard techniques. For example, it may be carried out using the manufacturer's instructions for use with the kit, or in accordance with methods known in the art or the description of this invention. The techniques and methods described herein can generally be implemented according to conventional methods well known in the art, based on the descriptions in the various summary and more specific documents cited and discussed in this specification.

[0013] The terms “optional / arbitrary” or “optionally / arbitrarily” mean that the event or situation described below may or may not occur, including both the occurrence and non-occurrence of the event or situation.

[0014] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, the present invention provides a barrier-repairing facial cleansing composition based on natural oils and plant ash alkali, the barrier-repairing facial cleansing composition comprising the following components: quinoa straw plant ash alkali solution, camellia seed oil, avocado seed oil, potassium cocoyl glycinate, honey, C8-C10 short-chain fatty acids extracted from coconut oil fractionation, and sodium salts of C8-C10 short-chain fatty acids extracted from coconut oil fractionation.

[0015] Preferably, the composition comprises, by weight, the following components: 25-40 parts of quinoa straw ash alkaline solution, 30-50 parts of camellia seed oil, 10-25 parts of avocado seed oil, 2.5-4.5 parts of potassium cocoyl glycinate, 3.5-5.5 parts of honey, 1.2-1.6 parts of C8-C10 short-chain fatty acids extracted from coconut oil fractionation, and 0.9-1.3 parts of sodium salt of C8-C10 short-chain fatty acids extracted from coconut oil fractionation.

[0016] More preferably, the mass ratio of the camellia seed oil to the avocado seed oil is 1.5-2.5:1.

[0017] More preferably, the weight ratio of the quinoa straw ash alkaline solution to the camellia seed oil and avocado seed oil is 1:1.8-2.5.

[0018] More preferably, the preparation steps of the quinoa straw ash alkaline solution are as follows: quinoa straw is fully burned, sieved, the sieved portion is extracted with pure water, the extracts are combined, allowed to stand, the supernatant is filtered through a microfiltration membrane, and the pH of the filtrate is adjusted to 7.2-7.6 with food-grade citric acid.

[0019] More preferably, the sieving is performed through an 80-mesh sieve.

[0020] More preferably, the amount of water added in a single extraction is 8-12 times the mass of the wood ash powder, the extraction is performed 2-3 times, the extraction temperature is 85-90℃, and the extraction time for a single extraction is 0.5-1 h.

[0021] More preferably, the settling time is 2-4 hours.

[0022] In a second aspect, the present invention provides a method for preparing the above-mentioned barrier repair cleansing composition, the method comprising the following steps: (1) Preparation of quinoa straw ash alkaline solution: Quinoa straw is fully burned, sieved, and the sieved part is extracted. The extracts are combined, allowed to stand, and the supernatant is filtered through a microfiltration membrane. The pH of the filtrate is adjusted to 7.2-7.6 with food-grade citric acid. (2) Camellia seed oil and avocado seed oil were mixed to obtain a compound oil. Quinoa straw ash alkaline solution and compound oil were saponified at low temperature, and the degree of saponification was controlled at 48%-53% to obtain a saponified mixture. (3) Add potassium cocoyl glycinate, honey, C8-C10 short-chain fatty acids extracted from coconut oil fractionation and sodium salt of C8-C10 short-chain fatty acids extracted from coconut oil fractionation to the saponified mixture, mix evenly, adjust the pH to 5.5-6.0 with citric acid, and mature at a constant temperature to obtain the barrier repair facial cleansing composition.

[0023] Preferably, the sieving in step (1) is sieving through an 80-mesh sieve.

[0024] Preferably, in step (1), the amount of water added at one time during extraction is 8-12 times the mass of the wood ash powder, the extraction is performed 2-3 times, the extraction temperature is 85-90℃, and the extraction time at one time is 0.5-1 h.

[0025] Preferably, the settling time in step (1) is 2-4 hours.

[0026] Preferably, the saponification temperature in step (2) is 43-46℃ and the saponification time is 2-3 h.

[0027] Preferably, the constant temperature curing in step (3) is curing at 33-36℃ for 40-60 h.

[0028] The preparation process of the barrier repair cleansing composition of the present invention is as follows: Figure 1 As shown.

[0029] In a third aspect, the present invention provides the application of the above-described barrier repair cleansing composition or the barrier repair cleansing composition prepared by the above-described preparation method in the preparation of barrier repair cleansing cosmetics.

[0030] The present invention has at least the following beneficial effects: Compared with the prior art, the composition of the present invention meets the needs of people with poor skin barrier function (sensitive skin, damaged skin) for facial cleansing that is "gentle and non-irritating + cleansing and repairing simultaneously". It takes "high alkali content wood ash extract + high unsaponifiable matter natural oil compound + controllable saponification and oil retention" as the core, and has the characteristics of "protecting the skin barrier and strong repairing power". Specifically: (1) The K2CO3 content in quinoa straw wood ash is 35%-40%, which is the highest alkali content among commonly used wood ash raw materials. It can reduce the amount of raw materials used and reduce the interference of impurities, and the raw material cost is low; (2) During saponification, the free fatty acid content is detected. The saponification degree is controlled at 48%-53%, ensuring that 47%-52% of the compound oil remains, maximizing the retention of unsaponifiable components, forming a protective film during cleaning to reduce moisture loss, while the unsaponifiables directly act on the damaged barrier to promote lipid synthesis; (3) Gentle high foam and precise pH matching: using potassium cocoyl glycinate and honey to achieve a delicate, non-irritating, and naturally moisturizing foam, and finally using citric acid to precisely adjust the pH of the final composition to 5.5-6.0, consistent with the pH of healthy skin, avoiding damage to the barrier's acid-base balance, and ensuring no stinging or tightness during cleaning. Attached Figure Description

[0031] Figure 1 : Flowchart of the preparation process of the barrier repair cleansing composition of the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and beneficial effects of this invention clearer, detailed explanations are provided below through specific embodiments. It should be noted that these embodiments are for illustrative purposes only and do not constitute any limitation on the scope of the invention. Unless otherwise stated, the experimental methods described in the embodiments are conventional techniques in the art, and the materials and reagents used are commercially available.

[0033] The preparation method of quinoa straw ash alkaline solution used in the following examples or comparative examples is as follows: Quinoa straw was cut into sections, fully burned, and then passed through an 80-mesh sieve to remove charcoal residue. The K2CO3 content in the quinoa straw ash was tested to be 38.2%. A certain amount of quinoa straw ash was taken and extracted with 10 times the amount of purified water at 90℃ for 0.5 hours. After standing for 3 hours, the supernatant was taken, and the lower precipitate was extracted again with purified water at 90℃. After a total of three extractions, the supernatants were combined and purified by filtration through a 0.22μm microfiltration membrane. Food-grade citric acid was then added to adjust the pH of the alkaline solution to 7.4 to obtain the quinoa straw ash alkaline solution.

[0034] In the following examples or comparative examples, the octanoic acid and sodium decanoate used were all derived from coconut oil fractionation and extracted, and the manufacturer was Hangzhou Zanyu Oil Technology Co., Ltd.; the camellia seed oil was derived from Longyou Tianrun Oil Factory, with phytosterol esters ≥2.5% and unsaponifiable matter accounting for 1.2%-1.5%; the avocado seed oil was derived from OLVEA of France, with unsaponifiable matter 2.9%-3.1%, phytosterols ≥3.2%, and squalene ≥0.8%.

[0035] Example 1: A natural oil-wood ash alkali complex barrier repair cleansing composition, by weight, contains 30 parts quinoa straw wood ash alkali solution, 40 parts camellia seed oil, 20 parts avocado seed oil, 3.5 parts potassium cocoyl glycinate, 4 parts honey, 1.5 parts octanoic acid extracted from coconut oil fractionation, and 1 part sodium decanoate extracted from coconut oil fractionation.

[0036] Preparation method: Camellia seed oil and avocado seed oil are mixed to obtain a compound oil. Quinoa straw ash alkaline solution and compound oil are saponified at 45°C for 2.5 hours with stirring to obtain a saponified mixture. Potassium cocoyl glycinate, honey, and octanoic acid and sodium caprylate extracted from coconut oil fractionation are added to the saponified mixture. After mixing evenly, the pH is adjusted to 5.5 with citric acid, and the mixture is matured at 35°C for 48 hours to obtain the barrier repair facial cleansing composition.

[0037] The degree of saponification in Example 1 was 50.3%.

[0038] Example 2 A natural oil-wood ash alkali complex barrier repair cleansing composition, by weight, contains 25 parts quinoa straw wood ash alkali solution, 38 parts camellia seed oil, 22 parts avocado seed oil, 2.5 parts potassium cocoyl glycinate, 5.5 parts honey, 1.2 parts octanoic acid extracted from coconut oil fractionation, and 1.3 parts sodium decanoate extracted from coconut oil fractionation.

[0039] Preparation method: Camellia seed oil and avocado seed oil are mixed to obtain a compound oil. Quinoa straw ash alkaline solution and compound oil are saponified at 46℃ for 2 hours under stirring to obtain a saponified mixture. Potassium cocoyl glycinate, honey, and octanoic acid and sodium caprylate extracted from coconut oil fractionation are added to the saponified mixture. After mixing evenly, the pH is adjusted to 5.5 with citric acid, and the mixture is matured at 35℃ for 40 hours to obtain the barrier repair cleansing composition.

[0040] The degree of saponification in Example 2 was 48.6%.

[0041] Example 3 A natural oil-wood ash alkali complex barrier repair cleansing composition, by weight, contains 40 parts quinoa straw wood ash alkali solution, 48 parts camellia seed oil, 26 parts avocado seed oil, 4.5 parts potassium cocoyl glycinate, 3.5 parts honey, 1.6 parts octanoic acid extracted from coconut oil fractionation, and 0.9 parts sodium decanoate extracted from coconut oil fractionation.

[0042] Preparation method: Camellia seed oil and avocado seed oil are mixed to obtain a compound oil. Quinoa straw ash alkaline solution and compound oil are saponified at 43°C for 3 hours with stirring to obtain a saponified mixture. Potassium cocoyl glycinate, honey, and octanoic acid and sodium caprylate extracted from coconut oil fractionation are added to the saponified mixture. After mixing evenly, the pH is adjusted to 6.0 with citric acid, and the mixture is matured at 35°C for 60 hours to obtain the barrier repair facial cleansing composition.

[0043] The degree of saponification in Example 3 was 52.8%.

[0044] Comparative Example 1: A natural oil-wood ash alkali complex barrier repair cleansing composition, by weight, comprises 15 parts quinoa straw wood ash alkali solution, 50 parts camellia seed oil, 25 parts avocado seed oil, 3.5 parts potassium cocoyl glycinate, 4 parts honey, 1.5 parts octanoic acid extracted from coconut oil fractionation, and 1 part sodium decanoate extracted from coconut oil fractionation.

[0045] The difference from Example 1 is that the amounts of quinoa straw ash alkaline solution, camellia seed oil, and avocado seed oil are different.

[0046] The preparation method is the same as in Example 1.

[0047] The degree of saponification of Comparative Example 1 was 27.1%.

[0048] Comparative Example 2: A natural oil-wood ash alkali complex barrier repair cleansing composition, by weight, comprises 45 parts quinoa straw wood ash alkali solution, 30 parts camellia seed oil, 15 parts avocado seed oil, 3.5 parts potassium cocoyl glycinate, 4 parts honey, 1.5 parts octanoic acid extracted from coconut oil fractionation, and 1 part sodium decanoate extracted from coconut oil fractionation.

[0049] The difference from Example 1 is that the amounts of quinoa straw ash alkaline solution, camellia seed oil, and avocado seed oil are different.

[0050] The preparation method is the same as in Example 1.

[0051] The degree of saponification of Comparative Example 2 was 70.6%.

[0052] Comparative Example 3: A natural oil-wood ash alkali complex barrier repair cleansing composition, by weight, contains 30 parts quinoa straw wood ash alkali solution, 60 parts avocado seed oil, 3.5 parts potassium cocoyl glycinate, 4 parts honey, 1.5 parts octanoic acid extracted from coconut oil fractionation, and 1 part sodium decanoate extracted from coconut oil fractionation.

[0053] The difference from Example 1 is that Comparative Example 3 does not contain camellia seed oil, but is replaced with an equal amount of avocado seed oil.

[0054] Preparation method: Take avocado seed oil, add quinoa straw ash alkaline solution while stirring, and saponify at 45℃ for 2.5h to obtain a saponified mixture; add potassium cocoyl glycinate, honey, and octanoic acid and sodium caprylate extracted from coconut oil fractionation to the saponified mixture, mix evenly, adjust the pH to 5.5 with citric acid, and mature at 35℃ for 48h to obtain the barrier repair cleansing composition.

[0055] The degree of saponification of Comparative Example 3 was 50.4%.

[0056] Comparative Example 4: A natural oil-wood ash alkali complex barrier repair cleansing composition, by weight, contains 30 parts quinoa straw wood ash alkali solution, 60 parts camellia seed oil, 3.5 parts potassium cocoyl glycinate, 4 parts honey, 1.5 parts octanoic acid extracted from coconut oil fractionation, and 1 part sodium decanoate extracted from coconut oil fractionation.

[0057] The difference from Example 1 is that Comparative Example 4 does not contain avocado seed oil, but is replaced with an equal amount of camellia seed oil.

[0058] Preparation method: Take camellia seed oil, add quinoa straw ash alkaline solution while stirring, and saponify at 45℃ for 2.5h to obtain a saponified mixture; add potassium cocoyl glycinate, honey, and octanoic acid and sodium caprylate extracted from coconut oil fractionation to the saponified mixture, mix evenly, adjust the pH to 5.5 with citric acid, and mature at 35℃ for 48h to obtain the barrier repair facial cleansing composition.

[0059] The degree of saponification of Comparative Example 4 was 50.3%.

[0060] Comparative Example 5: A natural oil-wood ash alkali complex barrier repair cleansing composition, by weight, contains 30 parts quinoa straw wood ash alkali solution, 40 parts camellia seed oil, 20 parts avocado seed oil, 7.5 parts honey, 1.5 parts caprylic acid extracted from coconut oil fractionation, and 1 part sodium decanoate extracted from coconut oil fractionation.

[0061] The difference from Example 1 is that Comparative Example 5 does not contain potassium cocoyl glycinate, but is replaced with an equal amount of honey.

[0062] Preparation method: Camellia seed oil and avocado seed oil are mixed to obtain a compound oil. Quinoa straw ash alkaline solution and compound oil are saponified at 45°C for 2.5 hours with stirring to obtain a saponified mixture. Honey, octanoic acid extracted from coconut oil fractionation and sodium caprylate are added to the saponified mixture. After mixing evenly, the pH is adjusted to 5.5 with citric acid. The mixture is then matured at 35°C for 48 hours to obtain the barrier repair facial cleansing composition.

[0063] The degree of saponification of Comparative Example 5 was 50.2%.

[0064] Comparative Example 6: A natural oil-wood ash alkali complex barrier repair cleansing composition, by weight, contains 30 parts quinoa straw wood ash alkali solution, 40 parts camellia seed oil, 20 parts avocado seed oil, 7.5 parts potassium cocoyl glycinate, 1.5 parts octanoic acid extracted from coconut oil fractionation, and 1 part sodium decanoate extracted from coconut oil fractionation.

[0065] The difference from Example 1 is that Comparative Example 6 does not contain honey, but is replaced with an equal amount of potassium cocoyl glycinate.

[0066] Preparation method: Camellia seed oil and avocado seed oil are mixed to obtain a compound oil. Quinoa straw ash alkaline solution and compound oil are saponified at 45°C for 2.5 hours with stirring to obtain a saponified mixture. Potassium cocoyl glycinate, octanoic acid extracted from coconut oil fractionation and sodium decanoate are added to the saponified mixture. After mixing evenly, the pH is adjusted to 5.5 with citric acid. The mixture is then matured at 35°C for 48 hours to obtain the barrier repair facial cleansing composition.

[0067] The degree of saponification of Comparative Example 6 was 50.1%.

[0068] Experiment Example 1: Trial Evaluation The facial cleansing compositions prepared in Examples 1 to 3 and Comparative Examples 1 to 6 were evaluated in a trial setting, mainly focusing on the evaluation of foam richness, foam density (strength), post-wash residue, and post-wash comfort during use.

[0069] Testing Method: Twenty-five volunteers aged 20 to 35 with sensitive skin were selected as trial subjects. Each subject was given nine samples prepared according to Examples 1 to 3 and Comparative Examples 1 to 6. The subjects had healthy skin and met the inclusion criteria. The test subjects used the same sample every morning and evening. The nine samples were used for comparison over nine days. Before use, the facial skin was wetted with water. An appropriate amount of the product of this invention was applied to the palm of the hand with a little water, rubbed to create foam, and then gently massaged onto the face. The product was then rinsed with water. The product performance was scored.

[0070] Evaluation criteria: A trial form is filled out for scoring. The scoring indicators in the trial form include: foam richness, foam density (firmness), post-washing cleanliness, and post-washing comfort. The maximum score for each indicator is 10 points, 9-10 points indicates very satisfactory, 8-9 points indicates relatively satisfactory, 6-8 points indicates acceptable, and below 6 points is in the unacceptable range.

[0071] The average scores of 25 volunteers are recorded. The results are shown in Table 1.

[0072] Table 1: Trial evaluation results of the cleansing composition

[0073] According to the data in the table: compared with the comparative examples, the examples have the characteristics of both rich, dense and firm foam, and high post-washing cleanliness and comfort, indicating that when the quinoa straw plant ash lye, camellia seed oil and avocado seed oil of the barrier repairing cleansing composition prepared in the present application are within a specific dosage range, and camellia seed oil, avocado seed oil, potassium cocoyl glycinate and honey coexist, the prepared product has rich and dense foam, is mild and non-irritating, and is suitable for sensitive skin.

[0074] 2. Tape-induced damage test: A mouse model of epidermal damage (tape-induced damage) is established to investigate the recovery effect of the barrier repairing cleansing composition of the present invention on damaged epidermis and characterize its repairing efficacy.

[0075] Animals and grouping: ICR mice, female, with a body mass of 18-22 g, SPF grade, provided by Shanghai Slac Laboratory Animal Co., Ltd., production license number: SCXK (Hu) 2016-008, certificate number: 2008001682202. All animals are kept in the Laboratory Animal Center of Shanghai University of Traditional Chinese Medicine, the temperature of the breeding room is (22±2)°C, the relative humidity is 60%-70%, the light cycle is 12 h, and they can eat and drink freely. The mice are randomly divided into a normal group, a model group, groups of Example 1 to Example 3, and groups of Comparative Example 1 to Comparative Example 6, with 10 mice in each group. Except for the normal group, the mice in the other groups are established with a skin mechanical barrier damage model by the tape method. The specific method is as follows: a medical adhesive tape is closely attached to the back skin of the depilated mouse, and then quickly torn off. Each mouse receives 2 modeling stimuli per day, each stimulus repeats the "tape attachment-tearing off" process 5 times, the interval between the two modeling stimuli is about 8 h, and the modeling process lasts for 5 consecutive days. After modeling, the skin of the mice is observed to be red without bleeding.

[0076] After modeling, except for the model group, mice in other groups were treated with the corresponding barrier repair cleansing compositions for 14 consecutive days. Specifically, the composition was transferred to gauze using a syringe, and the gauze containing the composition was applied to the site of mechanical barrier damage in the mouse skin, gently patting for 5 minutes until absorption. The dosage was 0.3 g / mouse. After the last administration, the skin moisture content on the back of the mice was measured using a skin moisture meter (TM3688 skin moisture meter, Guangzhou Taomei Trading Co., Ltd.). During the test, the instrument was kept in complete contact with the skin at the test site and kept as perpendicular as possible. Measurements were repeated three times at the same test site, and the average value was taken. The results are shown in Table 2.

[0077] Table 2: Effects on skin hydration

[0078] Compared with the normal group, ##P<0.01; compared with the model group, &P<0.05, &&P<0.01; compared with Example 1 group, @P<0.05, @@P<0.01.

[0079] The above experimental results show that the skin moisture content of the model group mice was significantly reduced (P < 0.01). Compared with the model group, the skin moisture content of the mice in the example group and the comparative group was significantly increased, and the barrier repair cleansing composition provided in the present invention had a significantly higher effect on increasing skin moisture content than the comparative group.

[0080] The above detailed description is a specific illustration of one feasible embodiment of the present invention, and this embodiment is not intended to limit the patent scope of the present invention. It should be noted that all equivalent implementations or modifications made without departing from the present invention should be included within the scope of the technical solution of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A barrier-repairing facial cleansing composition based on natural oils and wood ash alkali, characterized in that, The barrier repair cleansing composition comprises the following components: quinoa straw ash alkaline solution, camellia seed oil, avocado seed oil, potassium cocoyl glycinate, honey, C8-C10 short-chain fatty acids extracted from coconut oil fractionation, and sodium salts of C8-C10 short-chain fatty acids extracted from coconut oil fractionation.

2. The barrier repair cleansing composition according to claim 1, characterized in that, The composition comprises, by weight, the following components: 25-40 parts of quinoa straw ash alkaline solution, 30-50 parts of camellia seed oil, 10-25 parts of avocado seed oil, 2.5-4.5 parts of potassium cocoyl glycinate, 3.5-5.5 parts of honey, 1.2-1.6 parts of C8-C10 short-chain fatty acids extracted from coconut oil fractionation, and 0.9-1.3 parts of sodium salt of C8-C10 short-chain fatty acids extracted from coconut oil fractionation.

3. The barrier repair cleansing composition according to claim 2, characterized in that, The mass ratio of the camellia seed oil to the avocado seed oil is 1.5-2.5:

1.

4. The barrier repair cleansing composition according to claim 2, characterized in that, The weight-to-mass ratio of the quinoa straw ash alkaline solution to camellia seed oil and avocado seed oil is 1:1.8-2.

5.

5. The barrier-repairing cleansing composition according to any one of claims 1-4, characterized in that, The preparation steps of the quinoa straw ash alkaline solution are as follows: quinoa straw is fully burned, sieved, and the sieved portion is extracted with pure water. The extracts are combined, allowed to stand, and the supernatant is filtered through a microfiltration membrane. The pH of the filtrate is adjusted to 7.2-7.6 with food-grade citric acid.

6. The barrier-repairing cleansing composition according to claim 5, characterized in that, The sieving is done through an 80-mesh sieve; the amount of water added in each extraction is 8-12 times the mass of the wood ash powder, the extraction is carried out 2-3 times, the extraction temperature is 85-90℃, and the extraction time is 0.5-1 h per extraction; the standing time is 2-4 h.

7. A method for preparing the barrier repair cleansing composition according to any one of claims 1-6, characterized in that, The preparation method includes the following steps: (1) Preparation of quinoa straw ash alkaline solution: Quinoa straw is fully burned, sieved, and the sieved part is extracted. The extracts are combined, allowed to stand, and the supernatant is filtered through a microfiltration membrane. The pH of the filtrate is adjusted to 7.2-7.6 with food-grade citric acid. (2) Camellia seed oil and avocado seed oil were mixed to obtain a compound oil. Quinoa straw ash alkaline solution and compound oil were saponified at low temperature, and the degree of saponification was controlled at 48%-53% to obtain a saponified mixture. (3) Add potassium cocoyl glycinate, honey, C8-C10 short-chain fatty acids extracted from coconut oil fractionation and sodium salt of C8-C10 short-chain fatty acids extracted from coconut oil fractionation to the saponified mixture, mix evenly, adjust the pH to 5.5-6.0 with citric acid, and mature at a constant temperature to obtain the barrier repair facial cleansing composition.

8. The preparation method according to claim 7, characterized in that, The sieving in step (1) is through an 80-mesh sieve; the amount of water added in the single extraction is 8-12 times the mass of the wood ash powder, the extraction is carried out 2-3 times, the extraction temperature is 85-90℃, and the extraction time is 0.5-1 h per extraction; the standing time is 2-4 h.

9. The preparation method according to claim 7, characterized in that, The saponification temperature in step (2) is 43-46℃, and the saponification time is 2-3h.

10. The use of the barrier repair cleansing composition according to any one of claims 1-6 in the preparation of a barrier repair cleansing cosmetic.

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