A soothing and moisturizing composition, its preparation method and application

Abstract

The present invention discloses a soothing and moisturizing composition, its preparation method and application, relating to the technical field of cosmetics. The present invention provides a soothing and moisturizing composition, comprising the following components in parts by weight: 1-10 parts of Chondrus crispus extract, 1-10 parts of agarobiose, 1-10 parts of Crithmum maritimum extract, 0.05-2 parts of oligopeptide-1, 0.05-2 parts of palmitoyl pentapeptide-4. The inventors found that when Chondrus crispus extract, agarobiose, Crithmum maritimum extract, oligopeptide-1, and palmitoyl pentapeptide-4 exist simultaneously, they can cooperate with each other and act together from multiple aspects to better achieve the effects of multi-channel, deep moisturizing and soothing, and enhancing the skin barrier.

Description

Technical Field

[0001] The present invention relates to the technical field of cosmetics, and in particular to a soothing and moisturizing composition, a preparation method thereof and an application. Background Art

[0002] With the acceleration of the pace of life and the aggravation of environmental pollution, skin problems such as dryness, sensitivity, inflammation, etc. are increasing day by day. Consumers' demand for skin care products is constantly rising, especially the demand for soothing and moisturizing products is more urgent. Soothing and moisturizing products aim to reduce the inflammatory response of the skin and enhance the moisturizing ability of the skin, thereby improving the health and beauty of the skin. However, the existing soothing and moisturizing products have some limitations in terms of effects and ingredients.

[0003] The current situation of existing soothing and moisturizing products: (1) Many soothing and moisturizing products rely only on single or a few ingredients, lacking multiple synergistic effects, resulting in limited effects. For example, some products only contain basic moisturizing ingredients such as hyaluronic acid or glycerin, and cannot fully meet the various needs of the skin. Single-component products are difficult to provide multiple effects such as moisturizing, soothing and antioxidant at the same time, and cannot comprehensively improve the skin condition. (2) The moisturizing effect of some products is not lasting. The skin may feel moisturized in a short time, but the effect gradually weakens after long-term use. For example, some products use silicone oil or mineral oil as moisturizing ingredients. Although they can provide good moisturizing effects in the short term, long-term use may damage the skin barrier function. (3) Some products only provide moisturizing effects on the skin surface, lacking deep moisturizing effects and cannot fundamentally improve the dryness problem of the skin. (4) The soothing effect of some products is not obvious, and they cannot effectively reduce the inflammatory response and irritation of the skin and cannot fundamentally reduce the inflammatory response of the skin. For example, some products use menthol or tea tree oil as soothing ingredients, but these ingredients may cause irritation to some sensitive skin.

[0004] Therefore, a soothing and moisturizing composition with multi-channel, deep moisturizing and soothing, and long-term effects has broad application prospects. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a multi-channel, deep moisturizing and soothing, and long-term effect soothing and moisturizing composition, a preparation method thereof and an application.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is: a soothing and moisturizing composition, comprising the following components in parts by weight: 1-10 parts of Chondrus crispus extract, 1-10 parts of Funori polysaccharide, 1-10 parts of Crithmum maritimum extract, 0.05-2 parts of oligopeptide-1, 0.05-2 parts of palmitoyl pentapeptide-4.

[0007] The present invention provides a soothing and moisturizing composition. The inventors found in the actual experimental process that the extracts of Chondrus crispus, agar, and Crithmum maritimum synergistically, on the one hand, the three components can synergistically form a better moisturizing barrier, further enhance the skin barrier function, and thus reduce water loss and the damage of external stimuli. On the other hand, the above three components of the extracts of Chondrus crispus, agar, and Crithmum maritimum can synergistically neutralize free radicals, reduce the damage of oxidative stress to the skin, and thus more effectively reduce the skin inflammatory response, playing a soothing and protective role. At the same time, the inventors found that when the soothing and moisturizing composition further contains oligopeptide-1 and palmitoyl pentapeptide-4, it can promote cell regeneration, promote the synthesis of collagen and hyaluronic acid, enhance the self-repair ability of the skin, and further enhance the skin barrier function; at the same time, oligopeptide-1 and palmitoyl pentapeptide-4 can synergistically further reduce the skin inflammatory response, thus playing a soothing role. Therefore, when the extracts of Chondrus crispus, agar, Crithmum maritimum, oligopeptide-1, and palmitoyl pentapeptide-4 exist simultaneously, they can synergistically act together from multiple aspects to better achieve the effects of multi-channel, deep moisturizing and soothing, and enhancing the skin barrier.

[0008] Preferably, the soothing and moisturizing composition comprises the following components in parts by weight: 6-8 parts of extract of Chondrus crispus, 3-5 parts of agar, 3-5 parts of extract of Crithmum maritimum, 0.5-1.5 parts of oligopeptide-1, and 0.5-1 part of palmitoyl pentapeptide-4.

[0009] Preferably, the mass percentage content of the extract of Chondrus crispus is 40-50%.

[0010] Preferably, the weight ratio of oligopeptide-1 to palmitoyl pentapeptide-4 is oligopeptide-1: palmitoyl pentapeptide-4 = (2-3): 1.

[0011] The inventors found in the actual experimental process that the parts by weight of the components in the soothing and moisturizing composition will affect the performance of the product. When the parts by weight of the components are further selected within the above range, the obtained product has more excellent moisturizing and soothing effects and can enhance the skin barrier.

[0012] Preferably, the preparation method of the extract of Chondrus crispus comprises the following steps:

[0013] (1) Dry and crush Chondrus crispus, and then screen it to obtain Chondrus crispus powder; the mesh number of the Chondrus crispus powder is 100-150 mesh;

[0014] (2) Extract the Chondrus crispus powder with 50-80 times the amount of ethanol solution, collect the filtrate and filter residue, concentrate the filtrate to a paste state, and dry it to a constant weight to obtain extract A;

[0015] (3) Extract the residue in step (2) with an extraction solvent in an amount of 10 - 20 times the volume, collect the filtrate, concentrate it to a paste, and dry it to a constant weight to obtain extract B; the extraction solvent is deionized water with a pH value of 9 - 10.

[0016] (4) Mix extract A in step (2) and extract B in step (3) to obtain the Chondrus crispus extract.

[0017] Preferably, in step (2), the volume fraction of the ethanol solution is 50 - 80%; the extraction is ultrasonic extraction, the temperature of the ultrasonic extraction is 50 - 60°C, the time of the ultrasonic extraction is 0.5 - 1 h, and the power of the ultrasonic extraction is 200 - 250 W; the drying temperature is 60 - 70°C.

[0018] Preferably, in step (3), the extraction is ultrasonic extraction, the temperature of the ultrasonic extraction is 70 - 90°C, the time of the ultrasonic extraction is 0.5 - 1 h, and the power of the ultrasonic extraction is 200 - 250 W; the drying temperature is 60 - 70°C.

[0019] Preferably, in step (3), the extraction solvent is deionized water with a pH value of 9 - 10, and the pH value of the deionized water is adjusted with an alkali; preferably, the alkali is sodium hydroxide.

[0020] The inventor found in the actual experiment process that the preparation method of the Chondrus crispus extract has a great influence on the final moisturizing and soothing effects. When using the above - mentioned specific preparation method of the Chondrus crispus extract, there is a balance between active ingredients such as adenosine and glycolipids and polysaccharides in the prepared Chondrus crispus extract. At the above - mentioned specific contents of active ingredients and polysaccharides, it has better synergy with Porphyra tenera polysaccharide, Crithmum maritimum extract, oligopeptide - 1, and palmitoyl pentapeptide - 4, and the obtained product has more excellent moisturizing and soothing effects and can enhance the skin barrier.

[0021] In addition, the present invention provides the application of the above - mentioned soothing and moisturizing composition in the preparation of skin care products.

[0022] Furthermore, the present invention provides a skin care product, which includes the above - mentioned soothing and moisturizing composition.

[0023] Preferably, the skin care product includes one of lotion, emulsion, cream, facial mask, essence, and spray, and the dosage form of the skin care product is one of aqueous solution, emulsion, spray, cream, and essence.

[0024] Optionally, the present invention provides a skin care product, which includes 0.5 - 5% of the above - mentioned soothing and moisturizing composition, 4 - 40% of a cosmetic matrix, and the balance is water.

[0025] Optionally, the cosmetic matrix includes at least one of a thickening agent, a humectant, an emulsifier, a preservative, a fragrance, and a pH regulator.

[0026] Exemplarily, the thickening agent includes at least one of xanthan gum, acryloyldimethyltauramide / VP copolymer, and scleroglucan; the humectant includes at least one of glycerol, allantoin, sodium polyacrylate, hydrogenated lecithin, betaine, β-glucan, trehalose, caprylyl glycol, dipropylene glycol, sodium hyaluronate, and 1,2-butanediol; the emulsifier includes at least one of coco-caprylate / caprate, polydimethylsiloxane, caprylic / capric triglyceride, C14-22 alcohol, C12-20 alkyl glucoside, cetearyl glucoside, isononyl isononanoate, pentaerythrityl tetraester, polydimethylsiloxane, stearyl alcohol, hydroxystearic acid, polymethylsilsesquioxane, pentaerythrityl distearate, and sucrose stearate; the preservative includes at least one of 1,2-hexanediol and p-hydroxyacetophenone; and the pH regulator includes at least one of arginine and EDTA-2Na.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a soothing and moisturizing composition. The inventors found in actual experiments that the extracts of Chondrus crispus, agar from Eucheuma okamurai, and Crambe maritima extract synergistically. On the one hand, the three components synergistically can better form a moisture retention barrier, further enhance the skin's barrier function, and thus reduce water loss and the invasion of external stimuli. On the other hand, the above three components of the extracts of Chondrus crispus, agar from Eucheuma okamurai, and Crambe maritima extract synergistically can better neutralize free radicals, reduce the damage of oxidative stress to the skin, and thus more effectively reduce the skin's inflammatory response, playing a soothing and protective role. At the same time, the inventors found that when the soothing and moisturizing composition further contains oligopeptide-1 and palmitoyl pentapeptide-4, it can promote cell regeneration, promote the synthesis of collagen and hyaluronic acid, enhance the skin's self-repair ability, and further enhance the skin's barrier function; at the same time, oligopeptide-1 and palmitoyl pentapeptide-4 synergistically can further reduce the skin's inflammatory response, thus playing a soothing role. Therefore, when the extracts of Chondrus crispus, agar from Eucheuma okamurai, Crambe maritima extract, oligopeptide-1, and palmitoyl pentapeptide-4 exist simultaneously, they can synergistically act together from multiple aspects to better achieve the effects of multi-channel, deep moisturizing and soothing, and enhancing the skin's barrier. Detailed embodiments

[0028] To better illustrate the purpose, technical solution and advantages of the present invention, the present invention will be further described below in conjunction with specific embodiments. The purpose is to understand the content of the present invention in detail, rather than to limit the present invention. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention. The experimental reagents and instruments designed in the examples and comparative examples of the present invention are all common ordinary reagents and instruments, unless otherwise specified, and can be obtained from commercial channels. In the examples and comparative examples, the experimental methods used are all conventional methods unless otherwise specified; and unless otherwise specified, the raw materials used in parallel experiments are the same batch of raw materials.

[0029] Further description of the raw materials used in the present invention:

[0030] Chondrus crispus extract - 1: Self - made, and the preparation method is as follows:

[0031] (1) Dry, crush and sieve Chondrus crispus to obtain Chondrus crispus powder; the mesh number of the Chondrus crispus powder is 100 mesh;

[0032] (2) Extract the Chondrus crispus powder with 50 times the volume of 80% ethanol solution, collect the filtrate and filter residue, concentrate the filtrate to a paste, and dry it to constant weight at 60 °C to obtain extract A; the temperature of the ultrasonic extraction is 50 °C, the time of ultrasonic extraction is 1 h, and the power of ultrasonic extraction is 200 W;

[0033] (3) Extract the filter residue in step (2) with 15 times the volume of extraction solvent, collect the filtrate and concentrate it to a paste, and dry it to constant weight at 60 °C to obtain extract B; the extraction solvent is deionized water with a pH value of 9, and the pH value is adjusted with sodium hydroxide; the temperature of the ultrasonic extraction is 70 °C, the time of ultrasonic extraction is 0.5 h, and the power of ultrasonic extraction is 200 W;

[0034] (4) Slowly mix extract A in step (2) and extract B in step (3) to obtain the Chondrus crispus extract.

[0035] Chondrus crispus extract - 2: Self - made. Compared with Chondrus crispus extract - 1, only the temperature of ultrasonic extraction in step (2) is different. The temperature of ultrasonic extraction is 60 °C, and the rest of the preparation methods are exactly the same.

[0036] Chondrus crispus extract - 3: Self - made. Compared with Chondrus crispus extract - 1, only the temperature of ultrasonic extraction in step (3) is different. The temperature of ultrasonic extraction is 90 °C, and the rest of the preparation methods are exactly the same.

[0037] Chondrus crispus extract - 4: self - made. Compared with Chondrus crispus extract - 1, only the pH of the extraction solvent in the ultrasonic extraction in step (3) is different. The pH of the extraction solvent for ultrasonic extraction is 10, and the rest of the preparation methods are exactly the same.

[0038] Chondrus crispus extract - 5: self - made. Compared with Chondrus crispus extract - 1, only the pH of the extraction solvent in the ultrasonic extraction in step (3) is different. The pH of the extraction solvent for ultrasonic extraction is 8, and the rest of the preparation methods are exactly the same.

[0039] Chondrus crispus extract - 6: self - made. Compared with Chondrus crispus extract - 1, only the pH of the extraction solvent in the ultrasonic extraction in step (3) is different. The pH of the extraction solvent for ultrasonic extraction is 11, and the rest of the preparation methods are exactly the same.

[0040] Chondrus crispus extract - 7: self - made. Compared with Chondrus crispus extract - 1, only the extraction solvent for ultrasonic extraction in step (3) is only deionized water with a pH value of 6.5, and the rest of the preparation methods are exactly the same.

[0041] Chondrus crispus extract - 8: self - made. Compared with Chondrus crispus extract - 1, the residue extraction is not carried out, and the rest of the preparation methods are exactly the same. The specific preparation method is as follows:

[0042] (1) Dry and crush the Chondrus crispus, and then sieve it to obtain Chondrus crispus powder; the mesh number of the Chondrus crispus powder is 100 mesh;

[0043] (2) Use 50 times the volume of 80% ethanol solution to extract the Chondrus crispus powder, collect the filtrate, concentrate the filtrate to a paste, and dry it to constant weight at 60 °C to obtain Chondrus crispus extract; the temperature of ultrasonic extraction is 50 °C, the time of ultrasonic extraction is 1 h, and the power of ultrasonic extraction is 200 W.

[0044] Chondrus crispus extract - 9: self - made. Compared with Chondrus crispus extract - 1, only step (3) is different, and the rest of the preparation methods are exactly the same. Specifically as follows: Use 15 times the volume of the extraction solvent to extract the residue in step (2), collect the filtrate and add 3 times the volume of absolute ethanol, let it stand overnight at 4 °C, centrifuge to separate the supernatant, concentrate the supernatant to a paste, and dry it to constant weight at 60 °C to obtain extract B; the extraction solvent is deionized water with a pH value of 9, and the pH value is adjusted with sodium hydroxide; the temperature of ultrasonic extraction is 70 °C, the time of ultrasonic extraction is 0.5 h, and the power of ultrasonic extraction is 200 W;

[0045] Caulerpa okamurae polysaccharide: Synsil, Guangzhou Huayang Biotechnology Co., Ltd.

[0046] Codium fragile extract: Xi'an Puri Bioscience Co., Ltd.

[0047] Oligopeptide-1: Native Peptide Biotechnology (Tianjin) Co., Ltd.

[0048] Palmitoyl Pentapeptide-4: Shaanxi Dennis Biotechnology Co., Ltd.

[0049] Gloiopeltis furcata Extract: Snowt Bio;

[0050] Leontopodium alpinum Extract: Guangzhou Hengyue Biotechnology Co., Ltd.

[0051] Oligopeptide-3: Xi'an Purece Biotechnology Co., Ltd.

[0052] Examples and Comparative Examples

[0053] The present invention provides a soothing and moisturizing composition. The components and parts by weight of the soothing and moisturizing compositions in the examples and comparative examples are selected as shown in Tables 1 - 3 below. The preparation method of the soothing and moisturizing composition includes the following steps: Weigh the chondrus crispus extract, agarophyte polysaccharide, crithmum maritimum extract, oligopeptide-1, and palmitoyl pentapeptide-4 according to the parts by weight. If there are no relevant components, do not add them. In the comparative examples, replace the components and add them, and mix evenly to obtain the soothing and moisturizing composition.

[0054] Table 1

[0055]

[0056]

[0057] Table 2

[0058]

[0059] Table 3

[0060]

[0061]

[0062] Application Examples

[0063] Application Examples 1 - 15, Comparative Application Examples 1 - 8 and Blank Application Example of the present invention provide an emulsion. The components (mass percentage) of the emulsion are shown in Table 4;

[0064] Among them, the soothing and moisturizing compositions in Application Examples 1-14 were respectively the soothing and moisturizing compositions prepared in Examples 1-14; the soothing and moisturizing compositions in Comparative Application Examples 1-8 were respectively the soothing and moisturizing compositions prepared in Comparative Examples 1-8; for example, the soothing and moisturizing composition used in Application Example 1 was the soothing and moisturizing composition in Example 1, the soothing and moisturizing composition used in Application Example 5 was the soothing and moisturizing composition in Example 5, and so on; the soothing and moisturizing composition used in Application Example 15 was the soothing and moisturizing composition prepared in Example 1.

[0065] Table 4

[0066]

[0067]

[0068] The present invention provides a method for preparing the emulsion, and the preparation method includes the following steps:

[0069] (1) Mix and stir the humectant, thickener and part of the pH regulator with water, heat to 80 °C, and homogenize at a rotation speed of 1500 rpm for 5 min. After homogenization, keep warm for standby to obtain Phase A;

[0070] (2) Mix the emulsifier, heat to 70 °C, and homogenize at a rotation speed of 1500 rpm for 5 min. After homogenization, keep warm for standby to obtain Phase B;

[0071] (3) Mix the preservatives, heat to 50 °C to melt, and obtain the prefabricated Phase C;

[0072] (4) Heat Phase A to 80 °C, add Phase B at a rotation speed of 200 rpm, stir and mix, then cool to 50 °C, add Phase C at a rotation speed of 200 rpm and stir and mix, then cool to below 45 °C, add the soothing and moisturizing composition and continue to stir for 5 min. Finally, add the remaining pH regulator to adjust the pH to 6.5, stop stirring, and discharge to obtain the emulsion.

[0073] Performance test - 1 Patch test.

[0074] Recruit 30 volunteers, 15 males and 15 females, aged 20-50 years old. Using the closed patch test method, place an equal amount (0.020 mL - 0.025 mL) of the test sample (emulsion) in a specific patch tester, apply it to the volunteer's arm with a low-allergy tape, gently press to make it evenly adhere to the skin, and stay for 24 h; the blank control group is distilled water. After 24 h, remove the patch tester, and observe the skin reaction at 0.5 h, 24 h, and 48 h, and record the results. The adverse reaction grades of the skin are shown in Table 5 below.

[0075] Table 5

[0076]

[0077] From the test results, it can be seen that in the technical solution provided by the present invention, 0 cases withdrew, and 0 cases had allergic reactions to the adhesive tape. Among them, no adverse reactions occurred in the application cases, comparative application cases, and blank application cases.

[0078] Performance test - 2 Repair of human body efficacy experiment.

[0079] The effect examples of the present invention verify the repair and soothing effects of the emulsions prepared from application examples 1 - 15, comparative application examples 1 - 8, and blank application examples.

[0080] The test process is as follows: Volunteers aged 18 - 45 years old were selected. On the day of arrival, no skin care products were applied. After cleansing their faces on the same day, the subjects sat still in a constant temperature and humidity room at a temperature of 21 ± 1°C and a humidity of 50 ± 10% for 25 minutes.

[0081] Facial photographs were taken using Visia - 7, and the a* value was obtained by image analysis of the exported red - area pictures;

[0082] Using a skin transepidermal water loss probe TM Hex (Courage + Khazaka) to measure the initial facial TEWL value.

[0083] On the 14th day after the subjects arrived, first clean the face with a cleansing product, dry the skin with a dry facial tissue, and sit still in a laboratory at a temperature of 21°C ± 1°C and a humidity of 50% ± 10% for 25 minutes for testing.

[0084] The subjects were randomly divided into 24 groups, with 5 people in each group. The emulsions of the blank application cases, application examples 1 - 15, and comparative application examples 1 - 8 were randomly applied to the whole face. TEWL tests and Visia - 7 photographs were taken on days 0 and 14, and the improvement of TEWL and a* value of each volunteer on days 0 and 14 was analyzed. The improvement was represented by the improvement rate of each value, and the calculation method was as follows:

[0085] Improvement rate relative to the initial value = (X 使用前 -X 使用后 ) / X 使用前 ×100%, where when calculating the improvement rates at 2h, 4h, and 14 days, X 使用前 all refer to the initial test value without using the product on day 0.

[0086] The transepidermal water loss TEWL value is a commonly used indicator reflecting the stratum corneum barrier function. The lower the TEWL value, the better the skin barrier function and the better the repair effect of the product; the redness a* value reflects the degree of skin sensitivity and redness. The lower the a* value, the lower the skin stress level and the better the soothing effect of the product.

[0087] The test results are shown in Table 6 - Table 7;

[0088] Table 6

[0089]

[0090]

[0091] Table 7

[0092]

[0093] As can be seen from the above table, for the emulsion prepared in the application example of the present invention, when chondrus crispus extract, agar, cress extract, oligopeptide - 1, and palmitoyl pentapeptide - 4 exist simultaneously, they can synergize with each other, act together from multiple aspects, and better achieve the effects of multi - pathway, deep moisturizing and soothing, and enhancing the skin barrier.

[0094] From the comparison of Application Examples 1 - 9, when the chondrus crispus extract is prepared by the specific preparation method of the chondrus crispus extract of the present invention, there is a balance between active ingredients such as adenosine and glycolipids and polysaccharides in the prepared chondrus crispus extract. Under the above - mentioned specific active ingredient and polysaccharide contents, it synergizes better with agar, cress extract, oligopeptide - 1, and palmitoyl pentapeptide - 4, and the obtained product has more excellent moisturizing, soothing, and skin - barrier - enhancing effects.

[0095] From the test results at 2h - 4h, when the chondrus crispus extract is prepared by the specific preparation method of the chondrus crispus extract of the present invention, under the above - mentioned specific active ingredient and polysaccharide contents, it synergizes better with agar, cress extract, oligopeptide - 1, and palmitoyl pentapeptide - 4, the cell regeneration ability and self - repair ability are further improved, and the improvement rate at 4h is significantly increased.

[0096] From the comparison of Application Example 1 and Application Examples 10 - 14, when chondrus crispus extract, agar, cress extract, oligopeptide - 1, and palmitoyl pentapeptide - 4 exist simultaneously, when the mass percentage content of the chondrus crispus extract is 40 - 50%, and / or the weight ratio of oligopeptide - 1 to palmitoyl pentapeptide - 4 is oligopeptide - 1: palmitoyl pentapeptide - 4 = (2 - 3): 1, the synergistic effect is better, which can better promote cell regeneration, better maintain deep moisturizing and soothing, and have a long - term soothing and moisturizing effect.

[0097] From the comparison of Application Example 1 and Application Example 15, when the soothing and moisturizing composition provided by the present invention is at 0.5 - 5%, it can promote cell regeneration, maintain deep moisturizing and soothing, and have a long - term soothing and moisturizing effect.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A soothing and moisturizing composition, characterized in that, Comprising the following components in parts by weight: 1 - 10 parts of Chondrus crispus extract, 1 - 10 parts of agar-agar polysaccharide, 1 - 10 parts of Crithmum maritimum extract, 0.05 - 2 parts of oligopeptide-1, 0.05 - 2 parts of palmitoyl pentapeptide-4; The preparation method of the Chondrus crispus extract comprises the following steps: (1) Dry and crush Chondrus crispus, then sieve it to obtain Chondrus crispus powder; the mesh number of the Chondrus crispus powder is 100 - 150 meshes; (2) Extract the Chondrus crispus powder with 50 - 80 times the amount of ethanol solution, collect the filtrate and residue, concentrate the filtrate to a paste, and dry it to constant weight to obtain extract A; the volume fraction of the ethanol solution is 50 - 80%; the extraction is ultrasonic extraction, the temperature of the ultrasonic extraction is 50 - 60 °C, the time of the ultrasonic extraction is 0.5 - 1 h, the power of the ultrasonic extraction is 200 - 250 W; the drying temperature is 60 - 70 °C; (3) Extract the residue in step (2) with 10 - 20 times the amount of extraction solvent, collect the filtrate and concentrate it to a paste, and dry it to constant weight to obtain extract B; the extraction solvent is deionized water with a pH value of 9 - 10; the extraction is ultrasonic extraction, the temperature of the ultrasonic extraction is 70 - 90 °C, the time of the ultrasonic extraction is 0.5 - 1 h, the power of the ultrasonic extraction is 200 - 250 W; the drying temperature is 60 - 70 °C; (4) Mix extract A in step (2) and extract B in step (3) to obtain the Chondrus crispus extract.

2. The soothing and moisturizing composition according to claim 1, characterized in that Comprising the following components in parts by weight: 6 - 8 parts of Chondrus crispus extract, 3 - 5 parts of agar-agar polysaccharide, 3 - 5 parts of Crithmum maritimum extract, 0.5 - 1.5 parts of oligopeptide-1, 0.5 - 1 part of palmitoyl pentapeptide-4.

3. The soothing and moisturizing composition according to claim 1, characterized in that, The mass percentage content of the Chondrus crispus extract is 40 - 50%.

4. The soothing and moisturizing composition according to claim 1, wherein The weight ratio of oligopeptide-1 to palmitoyl pentapeptide-4 is oligopeptide-1:palmitoyl pentapeptide-4 = (2 - 3):

1.

5. Use of a soothing and moisturizing composition according to any one of claims 1 - 4 in the preparation of skin care products.

6. A skin care product, characterized in that, The skin care product comprises a soothing and moisturizing composition according to any one of claims 1 - 4.

7. The skin care product according to claim 6, wherein, The skin care product includes one of lotion, emulsion, cream, facial mask, essence, spray.

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