Skin care composition with soothing, repairing, moisturizing and itching relieving functions

Abstract

The invention discloses a skin care composition with soothing, repairing, moisturizing and itching relieving functions. The skin care composition is prepared from a component A, a component B, an itching relieving enhancer and deionized water. Wherein the component A comprises xanthan gum, rose water, essential oil and vitamin C; the component B comprises carbomer, a modified surfactant, hyaluronic acid, glutathione and sodium glutamate diacetate; the itching-relieving enhancer comprises an aloe polysaccharide degradation product, allantoin and sea buckthron oil. The skin care composition disclosed by the invention has relatively strong moisture retention and skin repairing and itching relieving effects.

Description

Technical Field

[0001] The invention relates to the technical field of skin care products, and specifically comprises a skin care composition with the effects of soothing, repairing, moisturizing and relieving itching. Background Art

[0002] Due to the changes in lifestyle and surrounding environment, people's skin is facing challenges from many aspects: first, external factors such as environmental pollution and ultraviolet radiation can damage the skin; second, as we age, our skin will gradually lose its elasticity and luster; third, bad living habits and diet can also have a negative impact on the skin, such as staying up late and eating too much sugar, which may cause dark circles and wrinkles. Therefore, modern people should maintain healthy skin, delay the aging process, and enhance the skin's resistance by using skin care products correctly, so as to maintain a young and confident appearance.

[0003] At present, the skin care products used today still have some shortcomings in some aspects, especially the improvement effect on dry skin, itching, allergies, etc. is not significant enough. Some products may focus too much on surface moisturizing and hydration, while ignoring the deep repair and nourishment of the skin. In addition, many skin care products do not solve the problem of soothing and repairing well, so the skin may feel more sensitive and fragile after use. In addition, many skin care products do not have comprehensive effects, often only targeting a certain aspect of skin problems, and cannot comprehensively solve multiple skin problems. Summary of the invention

[0004] The purpose of the present invention is to solve the deficiencies of existing skin care products and to provide a skin care composition with soothing, repairing, moisturizing and antipruritic effects.

[0005] In order to achieve the above object, the technical solution provided by the present invention is: A skin care composition with soothing, repairing, moisturizing and antipruritic effects, comprising component A, component B, an antipruritic enhancer and deionized water. Component A includes xanthan gum, rose water, essential oil and vitamin C; component B includes carbomer, modified surfactant, hyaluronic acid, glutathione and sodium glutamate diacetate; and the antipruritic enhancer includes aloe polysaccharide degradation product, allantoin and sea buckthorn oil.

[0006] Preferably, the components are measured by weight: component A includes 0.1-0.5 parts of xanthan gum, 1-3 parts of rose water, 1-5 parts of essential oil, and 0.1-2 parts of vitamin C; component B includes 0.5-4 parts of carbomer, 2-8 parts of modified surfactant, 0.5-4 parts of hyaluronic acid, 0.1-2 parts of glutathione, and 0.01-0.1 parts of sodium glutamate diacetate; and the antipruritic enhancer includes 0.5-4 parts of aloe polysaccharide degradation product, 0.1-0.5 parts of allantoin, and 0.01-0.2 parts of sea buckthorn oil.

[0007] Preferably, the modified surfactant is prepared by introducing an imidazolium group into a sodium lauryl sulfate molecule.

[0008] Preferably, the preparation process of the modified surfactant is as follows: S1: Add anhydrous ethanol into a reaction kettle, then add sodium lauryl sulfate, stir evenly, and then slowly add imidazolium bromide while keeping stirring to fully mix the two raw materials.

[0009] S2: Add an appropriate amount of catalyst, adjust the pH value, and heat to 50-70°C for 2-4 hours to allow sodium lauryl sulfate and imidazolium bromide to react fully.

[0010] S3: After the reaction is completed, the reaction solution is poured into a separating funnel, allowed to stand for stratification, the upper clear liquid is collected, washed with a small amount of anhydrous ethanol, and then dried with a dryer to obtain cationic modified sodium lauryl sulfate.

[0011] Preferably, in the preparation process of the modified surfactant, the molar ratio of sodium lauryl sulfate to imidazolium bromide is 1:1-1:2, the pH value ranges from 6-8, the catalyst is triethylamine or pyridine, the amount of the catalyst is 1-3% of the sodium lauryl sulfate, and the amount of anhydrous ethanol is to ensure that the reaction solution is fully mixed and no large amount of foam appears.

[0012] Preferably, the preparation process of the aloe polysaccharide degradation product is as follows: S1: Crush the aloe raw material into small pieces, add 0.1-1wt% of biological enzyme and appropriate amount of water relative to the raw material, stir evenly and let stand for 1-2 hours to fully degrade the aloe polysaccharide.

[0013] S2: Pour the mixture into a centrifuge and centrifuge at an appropriate speed (such as 3000-4000 rpm) for 10-30 minutes to remove solid impurities and residues, then pour the supernatant into a clean beaker and filter with filter paper to remove insoluble impurities.

[0014] S3: Add an appropriate amount of ethanol or acetone to the degraded polysaccharide solution to precipitate polysaccharides of different molecular weights, dissolve the polysaccharides of different molecular weights in an appropriate amount of water, add an appropriate amount of ethanol or acetone to adjust the molecular weight distribution of the polysaccharide, pour the polysaccharide solution after molecular weight adjustment into an evaporator, heat and evaporate the solvent, and obtain the aloe polysaccharide degradation product.

[0015] Preferably, the preparation method of the skin care composition is as follows: S1: Add the A component to 10-50 parts of deionized water in proportion, mix thoroughly, heat to 30-50°C, and stir for 10-30 minutes; S2: Add the B component into 10-50 parts of deionized water in proportion and mix thoroughly, then add the A component that has been stirred thoroughly and add the antipruritic agent, heat to 50-80°C, stir for 20-60 minutes, emulsify, and discharge to obtain a soothing, repairing, moisturizing and antipruritic skin care composition.

[0016] Xanthan gum has good water solubility and moisturizing properties. It can form a protective film to protect skin moisture, make the skin smooth and delicate, and has a whitening effect. On the other hand, xanthan gum has antioxidant properties, can remove free radicals, improve skin roughness and dullness, and stimulate the production of collagen powder in the skin, thereby achieving a soothing and repairing effect.

[0017] Rose water has excellent anti-inflammatory and anti-allergic properties, which can relieve skin sensitivity and inflammation and promote the skin's self-repair ability. Applying rose water on the skin can reduce symptoms such as redness, swelling, and itching. At the same time, the antioxidant components in rose water can resist free radical damage, thereby slowing down the skin aging process and preventing skin cancer. Rose water also contains vitamin C and flavonoids, which have whitening effects, can brighten the skin tone and fade spots. In addition, rose water also has antibacterial effects, which can kill bacteria and fungi, and prevent and treat skin infections.

[0018] Allantoin can promote the continuous renewal of the necrotic stratum corneum on the skin surface, achieve the effect of cleaning the skin, and form a protective film to resist harmful external stimuli, promote the regeneration of new cells, and further soothe and repair the skin. In addition, allantoin has a good anti-inflammatory and anti-infection effect, which can reduce skin inflammation and redness and swelling symptoms, thereby relieving skin itching.

[0019] Ingredients such as beta-sitosterol and sitosterol in seabuckthorn oil can inhibit inflammatory responses and reduce irritation such as redness and itching. After the skin is damaged or irritated, seabuckthorn oil can also accelerate the skin's repair process and promote the regeneration and healing of the injured area. In addition, seabuckthorn oil can also repair damaged epidermal barriers and is an ideal skin care product that can be used to repair and maintain dry, sensitive and damaged skin.

[0020] Glutathione is a natural antioxidant that can remove free radicals in the body and protect cells from oxidative damage, thereby extending the life of cells. In addition, glutathione can inhibit inflammatory responses, reduce the damage of inflammation to the skin, and relieve skin allergy symptoms. At the same time, glutathione can also promote the synthesis of collagen, increase skin elasticity and radiance, and delay skin aging.

[0021] Sodium lauryl sulfate (SDS) is a common surfactant with good cleaning and foaming ability, but its moisturizing effect is not strong. In order to enhance its moisturizing effect, cationic imidazolium groups can be introduced into the sodium lauryl sulfate molecule to increase its interaction with the negatively charged skin surface, thereby improving its moisturizing effect.

[0022] Aloe vera has a certain antipruritic effect, which can relieve itching caused by abrasions and punctures, and contains a relatively large amount of gelatinous substances, which have a calming, soothing and hydrating effect. However, the antipruritic effect of aloe vera also has certain limitations. By changing the molecular weight of the active ingredients in aloe vera and making it into aloe polysaccharide degradation products, the antipruritic effect of aloe vera can be improved.

[0023] The beneficial effects of the present invention are as follows: (1) The present invention constructs a combination of xanthan gum + rose water + allantoin + sea buckthorn oil, which has the effect of cleaning the skin and forming a protective film to resist harmful external stimuli, promote the regeneration of new cells, and synergistically play the role of anti-inflammatory, anti-infective and slow repair of the skin. (2) The xanthan gum in the composition has good water solubility and moisturizing properties, and can form a protective film to protect the skin moisture and make the skin smooth and delicate; and the introduction of cationic imidazolium groups into the sodium lauryl sulfate molecules can increase its interaction with the negatively charged skin surface, thereby improving its moisturizing effect on the skin surface. Under the synergistic effect of both parties, the moisturizing property of the composition is further enhanced. (3) The allantoin and sea buckthorn oil in the composition both have the effect of preventing skin dryness, cracking, itching and allergies, and by changing the molecular weight of the active ingredient in aloe vera, it is made into an aloe polysaccharide degradation product, which significantly improves the antipruritic effect of the composition. Specific embodiments

[0024] The present invention is further described below in conjunction with specific embodiments, but is not intended to limit the present invention. Example

[0025] A skin care composition with soothing, repairing, moisturizing and antipruritic effects, comprising component A, component B, an antipruritic enhancer and deionized water. Component A comprises 0.1 parts of xanthan gum, 1 part of rose water, 2 parts of essential oil and 0.1 parts of vitamin C by weight; component B comprises 4 parts of carbomer, 2 parts of modified surfactant, 0.54 parts of hyaluronic acid, 2 parts of glutathione and 0.01 parts of sodium glutamate diacetate; the antipruritic enhancer comprises 0.5 parts of aloe polysaccharide degradation product, 0.1 parts of allantoin and 0.01 parts of sea buckthorn oil.

[0026] (1) Preparation of modified surfactants: ① Add anhydrous ethanol to the reactor, then add sodium lauryl sulfate, stir evenly, then slowly add imidazolium bromide, while keeping stirring to fully mix the two raw materials. ② Add an appropriate amount of catalyst triethylamine, adjust the pH value to 8, and heat to 50°C for 2 hours to allow sodium lauryl sulfate and imidazolium bromide to fully react. ③ After the reaction is completed, pour the reaction solution into a separatory funnel, let it stand for stratification, collect the supernatant, wash with a small amount of anhydrous ethanol, and then dry it in a dryer to obtain cationic modified sodium lauryl sulfate.

[0027] In the above preparation process, the molar ratio of sodium lauryl sulfate to imidazolium bromide is 1:1, the amount of catalyst used is 1% of sodium lauryl sulfate, and the amount of anhydrous ethanol used is to ensure that the reaction solution is fully mixed and no large amount of foam occurs.

[0028] (2) Preparation of aloe polysaccharide degradation products: ① Crush the aloe raw material into small pieces, add 0.1wt% of biological enzyme and appropriate amount of water relative to the raw material, stir evenly and let stand for 1 hour to fully degrade the aloe polysaccharide. ② Pour the mixture into a centrifuge and centrifuge at an appropriate speed (such as 3200 rpm) for 20 minutes to remove solid impurities and residues, then pour the supernatant into a clean beaker and filter with filter paper to remove insoluble impurities. ③ Add appropriate amount of ethanol or acetone to the degraded polysaccharide solution to precipitate polysaccharides of different molecular weights, dissolve polysaccharides of different molecular weights in appropriate amount of water, add appropriate amount of ethanol or acetone to adjust the molecular weight distribution of the polysaccharide. Pour the polysaccharide solution after adjusting the molecular weight into an evaporator, heat and evaporate the solvent to obtain aloe polysaccharide degradation product.

[0029] (3) Preparation of skin care composition: ① Add the A component to 20 parts of deionized water in proportion and mix thoroughly, heat to 30°C, and stir for 10 minutes; ② Add the B component to 10 parts of deionized water in proportion and mix thoroughly, then add the A component that has been fully stirred, and add the antipruritic enhancer, heat to 50°C, stir for 20 minutes, emulsify, and discharge to obtain a soothing, repairing, moisturizing and antipruritic skin care composition. Example

[0030] A skin care composition with soothing, repairing, moisturizing and antipruritic effects, comprising component A, component B, an antipruritic enhancer and deionized water. Component A comprises 0.5 parts of xanthan gum, 1.5 parts of rose water, 1 part of essential oil and 2 parts of vitamin C by weight; component B comprises 3 parts of carbomer, 8 parts of modified surfactant, 2 parts of hyaluronic acid, 1 part of glutathione and 0.05 parts of sodium glutamate diacetate; the antipruritic enhancer comprises 2 parts of aloe polysaccharide degradation product, 0.5 parts of allantoin and 0.2 parts of sea buckthorn oil.

[0031] (1) Preparation of modified surfactants: ① Add anhydrous ethanol to the reactor, then add sodium lauryl sulfate, stir evenly, then slowly add imidazolium bromide, while keeping stirring to fully mix the two raw materials. ② Add an appropriate amount of catalyst pyridine, adjust the pH value to 6.5, and heat to 55°C for 3 hours to allow sodium lauryl sulfate and imidazolium bromide to fully react. ③ After the reaction is completed, pour the reaction solution into a separatory funnel, let it stand for stratification, collect the supernatant, wash with a small amount of anhydrous ethanol, and then dry it in a dryer to obtain cationic modified sodium lauryl sulfate.

[0032] In the above preparation process, the molar ratio of sodium lauryl sulfate to imidazolium bromide is 1:1.5, the amount of catalyst used is 2% of sodium lauryl sulfate, and the amount of anhydrous ethanol used is to ensure that the reaction solution is fully mixed and no large amount of foam occurs.

[0033] (2) Preparation of aloe polysaccharide degradation products: ① Crush the aloe raw material into small pieces, add 1wt% of biological enzyme and appropriate amount of water relative to the raw material, stir evenly and let stand for 2 hours to fully degrade the aloe polysaccharide. ② Pour the mixture into a centrifuge and centrifuge at an appropriate speed (such as 3000 rpm) for 10 minutes to remove solid impurities and residues, then pour the supernatant into a clean beaker and filter with filter paper to remove insoluble impurities. ③ Add appropriate amount of ethanol or acetone to the degraded polysaccharide solution to precipitate polysaccharides of different molecular weights, dissolve polysaccharides of different molecular weights in appropriate amount of water, add appropriate amount of ethanol or acetone to adjust the molecular weight distribution of the polysaccharide. Pour the polysaccharide solution after adjusting the molecular weight into an evaporator, heat and evaporate the solvent to obtain aloe polysaccharide degradation product.

[0034] (3) Preparation of skin care composition: ① Add the A component to 30 parts of deionized water in proportion and mix thoroughly, heat to 45°C, and stir for 20 minutes; ② Add the B component to 40 parts of deionized water in proportion and mix thoroughly, then add the A component that has been fully stirred, and add the antipruritic enhancer, heat to 80°C, stir for 50 minutes, emulsify, and discharge to obtain a soothing, repairing, moisturizing and antipruritic skin care composition. Example

[0035] A skin care composition with soothing, repairing, moisturizing and antipruritic effects, comprising component A, component B, an antipruritic enhancer and deionized water. Component A comprises 0.3 parts of xanthan gum, 2 parts of rose water, 3 parts of essential oil and 0.5 parts of vitamin C by weight; component B comprises 1 part of carbomer, 4 parts of modified surfactant, 1 part of hyaluronic acid, 0.1 parts of glutathione and 0.08 parts of sodium glutamate diacetate; the antipruritic enhancer comprises 4 parts of aloe polysaccharide degradation product, 0.3 parts of allantoin and 0.1 parts of sea buckthorn oil.

[0036] (1) Preparation of modified surfactants: ① Add anhydrous ethanol to the reactor, then add sodium lauryl sulfate, stir evenly, then slowly add imidazolium bromide, while keeping stirring to fully mix the two raw materials. ② Add an appropriate amount of catalyst pyridine, adjust the pH value to 6, and heat to 70°C for 2.5 hours to allow sodium lauryl sulfate and imidazolium bromide to fully react. ③ After the reaction is completed, pour the reaction solution into a separatory funnel, let it stand for stratification, collect the supernatant, wash with a small amount of anhydrous ethanol, and then dry it in a dryer to obtain cationic modified sodium lauryl sulfate.

[0037] In the above preparation process, the molar ratio of sodium lauryl sulfate to imidazolium bromide is 1:1.2, the amount of catalyst used is 3% of sodium lauryl sulfate, and the amount of anhydrous ethanol used is to ensure that the reaction solution is fully mixed and no large amount of foam occurs.

[0038] (2) Preparation of aloe polysaccharide degradation products: ① Crush the aloe raw material into small pieces, add 0.5wt% of biological enzyme and appropriate amount of water relative to the raw material, stir evenly and let stand for 1.5 hours to fully degrade the aloe polysaccharide. ② Pour the mixture into a centrifuge and centrifuge at an appropriate speed (such as 3500 rpm) for 25 minutes to remove solid impurities and residues, then pour the supernatant into a clean beaker and filter with filter paper to remove insoluble impurities. ③ Add appropriate amount of ethanol or acetone to the degraded polysaccharide solution to precipitate polysaccharides of different molecular weights, dissolve polysaccharides of different molecular weights in appropriate amount of water, add appropriate amount of ethanol or acetone to adjust the molecular weight distribution of the polysaccharide. Pour the polysaccharide solution after adjusting the molecular weight into an evaporator, heat and evaporate the solvent to obtain aloe polysaccharide degradation product.

[0039] (3) Preparation of skin care composition: ① Add the A component to 10 parts of deionized water in proportion, mix thoroughly, heat to 40°C, and stir for 30 minutes; ② Add the B component to 20 parts of deionized water in proportion and mix thoroughly, then add the A component that has been fully stirred, and add the antipruritic enhancer, heat to 70°C, stir for 40 minutes, emulsify, and discharge to obtain a soothing, repairing, moisturizing and antipruritic skin care composition. Example

[0040] A skin care composition with soothing, repairing, moisturizing and antipruritic effects, comprising component A, component B, an antipruritic enhancer and deionized water. Component A comprises 0.4 parts of xanthan gum, 3 parts of rose water, 5 parts of essential oil and 1 part of vitamin C by weight; component B comprises 0.5 parts of carbomer, 6 parts of modified surfactant, 4 parts of hyaluronic acid, 0.8 parts of glutathione and 0.1 parts of sodium glutamate diacetate; the antipruritic enhancer comprises 3 parts of aloe polysaccharide degradation product, 0.4 parts of allantoin and 0.05 parts of sea buckthorn oil.

[0041] (1) Preparation of modified surfactants: ① Add anhydrous ethanol to the reactor, then add sodium lauryl sulfate, stir evenly, then slowly add imidazolium bromide, while keeping stirring to fully mix the two raw materials. ② Add an appropriate amount of catalyst triethylamine, adjust the pH value to 7, and heat to 65°C for 4 hours to allow sodium lauryl sulfate and imidazolium bromide to fully react. ③ After the reaction is completed, pour the reaction solution into a separatory funnel, let it stand for stratification, collect the supernatant, wash with a small amount of anhydrous ethanol, and then dry it in a dryer to obtain cationic modified sodium lauryl sulfate.

[0042] In the above preparation process, the molar ratio of sodium lauryl sulfate to imidazolium bromide is 1:2, the amount of the catalyst is 1.5% of the sodium lauryl sulfate, and the amount of anhydrous ethanol is to ensure that the reaction solution is fully mixed and no large amount of foam occurs.

[0043] (2) Preparation of aloe polysaccharide degradation products: ① The aloe raw material is broken into small pieces, and 0.8wt% of the biological enzyme and an appropriate amount of water are added relative to the raw material. After stirring evenly, the mixture is allowed to stand for 1 hour to fully degrade the aloe polysaccharide. ② The mixture is poured into a centrifuge and centrifuged at an appropriate speed (such as 4000 rpm) for 30 minutes to remove solid impurities and residues, and then the supernatant is poured into a clean beaker and filtered with filter paper to remove insoluble impurities. ③ The degraded polysaccharide solution is added with an appropriate amount of ethanol or acetone to precipitate polysaccharides of different molecular weights, and the polysaccharides of different molecular weights are dissolved in an appropriate amount of water, and an appropriate amount of ethanol or acetone is added to adjust the molecular weight distribution of the polysaccharide. The polysaccharide solution after the molecular weight is adjusted is poured into an evaporator, and the solvent is heated and evaporated to obtain the aloe polysaccharide degradation product.

[0044] (3) Preparation of skin care composition: ① Add the A component to 50 parts of deionized water in proportion and mix thoroughly, heat to 50°C, and stir for 15 minutes; ② Add the B component to 50 parts of deionized water in proportion and mix thoroughly, then add the A component that has been fully stirred, and add the antipruritic enhancer, heat to 60°C, stir for 60 minutes, emulsify, and discharge to obtain a soothing, repairing, moisturizing and antipruritic skin care composition.

[0045] Comparative Examples 1 to 4 Only the modified surfactants in Examples 1 to 4 were changed to unmodified ones, namely sodium lauryl sulfate; the degradation product of aloe polysaccharide was changed to aloe, and the rest were exactly the same as in Examples 1 to 4, to obtain the skin care compositions of Comparative Examples 1 to 4 respectively.

[0046] (1) Under the same temperature and humidity environment, 90 female volunteers aged between 18 and 60 were selected to participate in this experiment.

[0047] (2) Before starting the experiment, volunteers need to wash their faces with clean water and dry them with a towel.

[0048] (3) The volunteers were randomly divided into nine groups, each with 10 people. The first to fourth groups used the skin care products of Examples 1 to 4, the fifth to eighth groups used the skin care products of Comparative Examples 1 to 4, and the ninth group did not use any skin care product.

[0049] (4) The moisture content of the stratum corneum of each volunteer's skin was measured before the start of the test and 2 hours, 3 hours, 6 hours and 8 hours after the test. The measurement method was direct measurement using a skin moisture tester.

[0050] (5) Record the moisture content of the stratum corneum of each volunteer at each time point and take the average value. The results are shown in the following table: According to the results, the average moisture content of the skin stratum corneum of the blank control group without any skin care products did not change much; the average moisture content of the control group, groups 5 to 8 (using skin care products of comparative examples 1 to 4), increased with time, but compared with groups 1 to 4 (using skin care products of examples 1 to 4), the increase was limited, and the water retention was obviously not as good as that of the examples. It can be seen that the combination of modified sodium lauryl sulfate and aloe polysaccharide degradation products used in the present invention can lock moisture in the skin and significantly increase its moisture retention.

[0051] (1) Under the same temperature and humidity environment, 9 patients aged between 18 and 60 years old (with slight skin damage) were selected to participate in this trial.

[0052] (2) Before starting the test, the damaged areas on the patient's skin surface need to be cleaned uniformly.

[0053] (3) The patients were randomly divided into nine groups, with one patient in each group. Groups 1 to 4 used the skin care products of Examples 1 to 4, groups 5 to 8 used the skin care products of Comparative Examples 1 to 4, and group 9 did not use any skin care products.

[0054] (4) Observe the skin condition of each volunteer before the start of the experiment and 2 hours, 4 hours, 6 hours, 12 hours and 24 hours after the start of the experiment, and record the degree of skin redness, swelling and itching.

[0055] Group 0h 2h 4h 6h 12h 24h Group 1 Redness, swelling, allergy Redness, swelling, allergy Redness and swelling subside Itching Significant improvement Getting better Group 2 Redness, swelling, allergy Redness, swelling, allergy Mild allergy Significant improvement Improvement Improvement Group 3 Redness, swelling, itching Redness, swelling, itching Redness and swelling subside Mild itching Significant improvement Getting better Group 4 Redness, swelling, allergy Redness, swelling, allergy Getting better Significant improvement Improvement Improvement Group 5 Redness, swelling, allergy Redness, swelling, allergy Redness and swelling gradually subside, allergy Redness and swelling subsided, mild allergy Getting better Improvement Group 6 Redness, swelling, itching Redness, swelling, itching Redness and swelling gradually subside, itching Itching Itching Getting better Group 7 Redness, swelling, allergy Redness, swelling, allergy Redness and swelling gradually subside, allergy allergy Getting better Improvement Group 8 Redness, swelling, itching Redness, swelling, itching Redness and swelling gradually subside, allergy Mild allergy, itching Mild itching Getting better Group 9 Redness and swelling Itching, allergy Itching Itching Itching, allergy Mild itching and allergies According to the results in the above table, the blank control without any skin care products showed little change in the damaged skin of the patients in this group; the patients in the control group of groups 5 to 8 (using skin care products of comparative examples 1 to 4) showed some changes within 24 hours and developed in a good direction, but compared with groups 1 to 4 (using skin care products of examples 1 to 4), their skin repair effects had obvious shortcomings. It can be seen that the present invention uses a combination of modified sodium lauryl sulfate and aloe polysaccharide degradation products to construct a combination of xanthan gum + rose water + allantoin + sea buckthorn oil, which has the effect of cleaning the skin, and forms a protective film to resist harmful external stimuli, promote the regeneration of new cells, and significantly enhance its anti-inflammatory and anti-infective effects on skin repair.

Claims

1. A skin care composition with soothing, repairing, moisturizing and antipruritic properties, characterized in that: It is composed of component A, component B, antipruritic enhancer and deionized water. Component A includes xanthan gum, rose water, essential oil and vitamin C; component B includes carbomer, modified surfactant, hyaluronic acid, glutathione and sodium glutamate diacetate; and the antipruritic enhancer includes aloe polysaccharide degradation product, allantoin and sea buckthorn oil.

2. The soothing, repairing, moisturizing and antipruritic skin care composition according to claim 1, characterized in that: The components are measured by weight: component A includes 0.1-0.5 parts of xanthan gum, 1-3 parts of rose water, 1-5 parts of essential oil, and 0.1-2 parts of vitamin C; component B includes 0.5-4 parts of carbomer, 2-8 parts of modified surfactant, 0.5-4 parts of hyaluronic acid, 0.1-2 parts of glutathione, and 0.01-0.1 parts of sodium glutamate diacetate; and the antipruritic enhancer includes 0.5-4 parts of aloe polysaccharide degradation product, 0.1-0.5 parts of allantoin, and 0.01-0.2 parts of sea buckthorn oil.

3. The soothing, repairing, moisturizing and antipruritic skin care composition according to claim 1 or 2, characterized in that: The modified surfactant is prepared by introducing imidazolium groups into sodium lauryl sulfate molecules.

4. The soothing, repairing, moisturizing and antipruritic skin care composition according to claim 3, characterized in that: The preparation process of the modified surfactant is as follows: S1: Add anhydrous ethanol to a reaction kettle, then add sodium lauryl sulfate, stir evenly, and then slowly add imidazolium bromide while keeping stirring to fully mix the two raw materials; S2: Add an appropriate amount of catalyst, adjust the pH value, and heat to 50-70°C for 2-4 hours to allow sodium lauryl sulfate and imidazolium bromide to react fully; S3: After the reaction is completed, the reaction solution is poured into a separating funnel, allowed to stand for stratification, the upper clear liquid is collected, washed with a small amount of anhydrous ethanol, and then dried with a dryer to obtain cationic modified sodium lauryl sulfate.

5. The soothing, repairing, moisturizing and antipruritic skin care composition according to claim 4, characterized in that: In the preparation process, the molar ratio of sodium lauryl sulfate to imidazolium bromide is 1:1-1:2, the pH value ranges from 6 to 8, the catalyst is triethylamine or pyridine, the amount of the catalyst is 1-3% of the sodium lauryl sulfate, and the amount of anhydrous ethanol is to ensure that the reaction solution is fully mixed and no large amount of foam appears.

6. The soothing, repairing, moisturizing and antipruritic skin care composition according to claim 1 or 2, characterized in that: The preparation process of the aloe polysaccharide degradation product is as follows: S1: breaking the aloe raw material into small pieces, adding 0.1-1wt% of biological enzyme and an appropriate amount of water relative to the raw material, stirring evenly and standing for 1-2 hours to fully degrade the aloe polysaccharide; S2: Pour the mixture into a centrifuge and centrifuge at an appropriate speed (e.g., 3000-4000 rpm) for 10-30 minutes to remove solid impurities and residues, then pour the supernatant into a clean beaker and filter with filter paper to remove insoluble impurities; S3: Add an appropriate amount of ethanol or acetone to the degraded polysaccharide solution to precipitate polysaccharides of different molecular weights, dissolve the polysaccharides of different molecular weights in an appropriate amount of water, add an appropriate amount of ethanol or acetone to adjust the molecular weight distribution of the polysaccharide, pour the polysaccharide solution after molecular weight adjustment into an evaporator, heat and evaporate the solvent, and obtain the aloe polysaccharide degradation product.

7. The soothing, repairing, moisturizing and antipruritic skin care composition according to claim 2, characterized in that: The preparation method of the skin care composition is as follows: S1: Add the A component to 10-50 parts of deionized water in proportion, mix thoroughly, heat to 30-50°C, and stir for 10-30 minutes; S2: Add the B component into 10-50 parts of deionized water in proportion and mix thoroughly, then add the A component that has been stirred thoroughly and add the antipruritic agent, heat to 50-80°C, stir for 20-60 minutes, emulsify, and discharge to obtain a soothing, repairing, moisturizing and antipruritic skin care composition.