High-moisture-retention hand cream based on avocado butter emulsification system and preparation method of high-moisture-retention hand cream

Abstract

The invention provides a high-moisture-retention hand cream based on an avocado resin emulsification system and a preparation method thereof, and aims to solve the problems of poor moisture retention effect, low ingredient safety, unstable emulsification system and the like of a traditional product. Various moisturizers such as panthenol, glycerol and allantoin are combined, moisture is supplemented for the skin from different levels and mechanisms, a moisturizing barrier is formed, the moisture of the skin is locked, and the moisture content of the skin is effectively increased; according to the present invention, the natural oil and the moisturizing agent in the formula have characteristics of no skin irritation, effective hand skin roughness improving, hand moisturizing maintaining, strong moisturizing effect, high stability, nature and mildness, effective skin water content increasing, moisturizing barrier forming, moisturizing effect enhancing, moisturizing effect enhancing, moisturizing effect enhancing, moisturizing effect enhancing, moisturizing effect enhancing, moisturizing effect enhancing, moisturizing effect enhancing, moisturizing effect enhancing, moisturizing effect enhancing, moisturizing effect enhancing, moisturizing effect enhancing, moisturizing effect enhancing, moisturizing effect enhancing, and the like. And the mask has excellent heat resistance and cold resistance, and is suitable for various skin types.

Description

Technical Field

[0001] The present invention relates to the technical field of cosmetics, in particular to a highly moisturizing hand cream based on a shea butter emulsification system and a preparation method thereof. Background Art

[0002] With the improvement of living standards, people's demand for skin care products is growing, especially hand cream products, and the market demand continues to expand; traditional hand creams are mainly based on ingredients such as mineral oil. Although they can provide a certain degree of moisturizing effect, they have obvious shortcomings in naturalness, safety, and the depth and durability of moisturizing performance.

[0003] The invention with application publication number CN108815077A relates to a traditional Chinese medicine moisturizing hand cream, which is composed of the following raw materials in parts by weight: 29-31 parts of 5% carbomer, 9-11 parts of glyceryl monostearate, 5-7 parts of sodium alginate, 8-10 parts of light bamboo leaves, 23-25 ​​parts of dandelions, 23-25 ​​parts of honeysuckle, 8-10 parts of angelica, 8-10 parts of mint, 17-19 parts of lily, 8-10 parts of almonds, 17-19 parts of mulberry leaves, and 8-10 parts of lotus leaves. 0 parts, 10 parts of distilled water, 0.5 parts of Xinxianketone, the traditional Chinese medicine moisturizing hand cream of the invention effectively prevents rough skin, is suitable for use in autumn and winter, protects the skin of the hands, has no toxic side effects, and has a significant whitening effect. The invention uses traditional Chinese medicine extracts as active ingredients, which are pure natural and non-irritating. It is especially suitable for people with sensitive skin and has a significant effect; however, the moisturizing ingredients of the invention are single, and it is difficult to form an effective moisturizing barrier and lasting moisture lock on the skin surface, and it cannot lock moisture for a long time.

[0004] In order to improve the moisturizing effect, the invention with application publication number CN104473824A discloses a "microcapsule hand cream containing taro polysaccharides and dendrobium polyphenols", which is a spherical microcapsule with a core-shell structure, the capsule wall includes gelatin and sodium caseinate, and the capsule core includes taro polysaccharides and dendrobium polyphenols; the microcapsule hand cream containing taro polysaccharides and dendrobium polyphenols is prepared by a complex coacervation method; the embedding rate of the microcapsule is as high as 96%, and the embedding effect is excellent. The invention brings moisturizing, anti-oxidation, anti-wrinkle and anti-chapped biological active effects to the microcapsule hand cream containing taro polysaccharides and dendrobium polyphenols through the synergistic effect of taro polysaccharides and dendrobium polyphenols, and because the wall materials are made of gelatin and sodium caseinate, the microcapsule hand cream of the invention is more moisturizing and refreshing. However, if the invention is used for a long time or at high concentrations, the texture may be uneven and the application may not be smooth, which may irritate the skin and destroy the skin's microecological environment.

[0005] In summary, existing hand creams generally have the following disadvantages: 1) Poor moisturizing effect: Existing hand creams contain only a single moisturizing ingredient, typically glycerin or petrolatum, which is difficult to lock in moisture for a long time. Due to the limitations of these moisturizing ingredients, hand creams cannot form an effective moisturizing barrier on the skin surface and cannot lock in moisture for a long time. Consumers often need to use the product frequently to maintain the hydration of the skin. 2) Low ingredient safety: Some hand creams contain a lot of fragrances and preservatives to enhance their fragrance or extend their shelf life. This can be particularly harmful to people with sensitive skin, leading to allergic symptoms such as itching, redness, and stinging. Long-term use or high concentrations of these ingredients can irritate the skin, disrupting the skin's microecological environment and potentially causing skin problems. 3) Unstable emulsification system: The emulsification system of existing hand creams has the problem of poor stability. When encountering temperature changes or long-term storage, the emulsification system is prone to separation, which manifests as stratification and oil floating in the product, affecting the use effect and efficacy of the hand cream. In addition, products with unstable emulsification systems may have uneven texture and difficult to apply during use. Summary of the Invention

[0006] The purpose of the present invention is to solve the problems in the prior art and propose a highly moisturizing hand cream based on an avocado fat emulsification system and a preparation method thereof, which can solve the problems of poor moisturizing effect, low ingredient safety and unstable emulsification system.

[0007] To achieve the above objectives, the present invention provides a highly moisturizing hand cream based on an avocado fat emulsification system, the formula of which comprises the following components in parts by weight: Phase A: Panthenol: 0.1-0.5 parts; Glycerin: 2-5 parts; DRY-FLO TS PURE: 0.8-1.5 parts; Ammonium Acryloyldimethyl Taurate / VP Copolymer: 1-3 parts; Parahydroxyacetophenone: 0.2-0.8 parts; Allantoin: 0.05-0.2 parts; Phase B: Shea Butter: 15-25 parts; Emulium Delta MB: 1-3 parts; Cetostearyl Alcohol: 0.5-1.5 parts; PMX-200 Dimethicone: 0.5-2 parts; Argan Oil: 0.5-1.5 parts; Coco-Caprylate / Caprate: 1-5 parts; Phytosterol Esters: 0.1-0.5 parts; Phase C: 1,2-hexanediol: 0.2-0.8 parts; daily fragrance: 0.05-0.2 parts; The total weight of phase A, phase B, and phase C is 100 parts, and the balance is made up by water.

[0008] Preferably, the DRY-FLO TS PURE comprises cassava starch and polymethylsilsesquioxane, the EMULIUM DELTA MB comprises cetyl alcohol and glyceryl stearate, and the argan oil is a compound of refined argania spinosa kernel oil and vegetable oil.

[0009] Preferably, the moisturizer is one or more of panthenol, glycerin, p-hydroxyacetophenone, allantoin, avocado butter, cetostearyl alcohol, phytosterol esters and 1,2-hexanediol; the avocado butter is rich in unsaturated fatty acids, vitamin E, phytosterols and other nutrients, which can deeply nourish the skin, enhance the skin's moisturizing ability, help repair damaged skin barriers, and keep the hand skin hydrated, soft and healthy; the p-hydroxyacetophenone can effectively inhibit the growth and reproduction of microorganisms, extend the shelf life of the hand cream, ensure the safety and stability of the product, and can both meet the antiseptic requirements and minimize skin irritation.

[0010] Preferably, the thickener is one or more of DRY-FLO TS PURE, ammonium acryloyldimethyltaurate / VP copolymer, and cetostearyl alcohol; the ammonium acryloyldimethyltaurate / VP copolymer can form a breathable protective film on the skin surface, which helps to lock in moisture in the skin and reduce moisture evaporation, thereby prolonging the duration of the moisturizing effect, and can also improve the texture and feel of the hand cream, making it more uniform, delicate, and easy to apply and absorb.

[0011] Preferably, the emulsifier is one or more of EMULIUM DELTA MB and cetostearyl alcohol, wherein the EMULIUM DELTA MB is a nonionic emulsifier; the cetostearyl alcohol has good emulsifying properties and can evenly mix the oily components and aqueous components in the hand cream to form a stable emulsion, prevent oil-water separation, and make the product delicate and easy to apply.

[0012] To achieve the above object, the present invention also proposes a method for preparing a highly moisturizing hand cream based on a shea butter emulsification system, comprising the following steps: a) Combine 50-70 parts of water, 0.1-0.5 parts of panthenol, 2-5 parts of glycerin, 0.8-1.5 parts of DRY-FLO TS PURE, 1-3 parts of ammonium acryloyldimethyltaurate / VP copolymer, 0.2-0.8 parts of p-hydroxyacetophenone, and 0.05-0.2 parts of allantoin as phase A and set aside; Prepare phase B by adding 15-25 parts of avocado butter, 1-3 parts of EMULIUM DELTA MB, 0.5-1.5 parts of cetostearyl alcohol, 0.5-2 parts of PMX-200 dimethicone, 0.5-1.5 parts of argan oil, 1-5 parts of coconut caprylate / caprate, and 0.1-0.5 parts of phytosterol esters. Add 0.2-0.8 parts of 1,2-hexanediol and 0.05-0.2 parts of daily fragrance as phase C; b) Add phase A material into a water pot and heat the water pot to 80-90°C until it is completely dissolved; c) Add Phase B material into a pan and heat the pan to 80-90°C until completely dissolved; d) Pump phase A material into a vacuum homogenizer, then add phase B material into the vacuum homogenizer, and stir for 3 to 5 minutes; e) Turn on the cooling water, cool the vacuum homogenizer to below 45°C, and then add the Phase C material.

[0013] Preferably, the formulation comprises the following components in parts by weight: Phase A: Panthenol: 0.3 parts; Glycerin: 4 parts; DRY-FLO TS PURE: 1.2 parts; Ammonium Acryloyldimethyl Taurate / VP Copolymer: 1.5 parts; Parahydroxyacetophenone: 0.5 parts; Allantoin: 0.1 parts; Phase B: Shea Butter: 20 parts; Emulium Delta MB: 2.5 parts; Cetostearyl Alcohol: 0.8 parts; PMX-200 Dimethicone: 1 part; Argan Oil 0.8 parts; Coco-Caprylate / Caprate: 3 parts; Phytosterol Esters: 0.3 parts; Phase C: 1,2-hexanediol: 0.5 parts; daily fragrance: 0.1 parts; The total weight of phase A, phase B, and phase C is 100 parts, and the balance is made up by water.

[0014] Beneficial effects of the present invention: 1) Strong moisturizing effect: With avocado butter as its core oil ingredient, it is rich in various unsaturated fatty acids, vitamins, and phytosterols, providing excellent moisturizing and nourishing properties. The formula also contains a variety of humectants, such as panthenol, glycerin, allantoin, and 1,2-hexanediol. These moisturizers can replenish moisture to the skin through different levels and mechanisms, forming a moisturizing barrier, locking in skin moisture, and effectively increasing skin's water content, keeping the skin hydrated. 2) High emulsion system stability: By selecting EMULIUM DELTA MB and cetostearyl alcohol as emulsifiers and combining them with a unique preparation process, a stable and uniform emulsion system is constructed. During storage and use, the product is less likely to experience delamination, oil floating, or particle size enlargement, and has excellent heat and cold resistance. It can maintain excellent appearance and performance under different environmental conditions, extending the product's shelf life. 3) Natural and mild properties: The natural oils and moisturizers in the formula are non-irritating to the skin, avoiding potential irritants such as mineral oil and preservatives. It is suitable for sensitive skin and solves the problem of hand cream irritation to the skin.

[0015] The features and advantages of the present invention will be described in detail through embodiments. DETAILED DESCRIPTION

[0016] The present invention provides a highly moisturizing hand cream based on an avocado fat emulsification system, comprising the following components in parts by weight: Phase A: Panthenol: 0.1-0.5 parts; Glycerin: 2-5 parts; DRY-FLO TS PURE: 0.8-1.5 parts; Ammonium Acryloyldimethyl Taurate / VP Copolymer: 1-3 parts; Parahydroxyacetophenone: 0.2-0.8 parts; Allantoin: 0.05-0.2 parts; Phase B: Shea Butter: 15-25 parts; Emulium Delta MB: 1-3 parts; Cetostearyl Alcohol: 0.5-1.5 parts; PMX-200 Dimethicone: 0.5-2 parts; Argan Oil: 0.5-1.5 parts; Coco-Caprylate / Caprate: 1-5 parts; Phytosterol Esters: 0.1-0.5 parts; Phase C: 1,2-hexanediol: 0.2-0.8 parts; daily fragrance: 0.05-0.2 parts; The total weight of phase A, phase B, and phase C is 100 parts, and the balance is made up by water.

[0017] The DRY-FLO TS PURE comprises tapioca starch and polymethylsilsesquioxane, the EMULIUM DELTA MB comprises cetyl alcohol and glyceryl stearate, and the argan oil is a compound of refined argania spinosa kernel oil and vegetable oil; the moisturizer is one or more of panthenol, glycerin, p-hydroxyacetophenone, allantoin, shea butter, cetostearyl alcohol, phytosterol esters, and 1,2-hexanediol; the thickener is one or more of DRY-FLO TS PURE, ammonium acryloyldimethyltaurate / VP copolymer, and cetostearyl alcohol; the emulsifier is one or more of EMULIUM DELTA MB and cetostearyl alcohol, and the EMULIUM DELTA MB is a nonionic emulsifier.

[0018] To achieve the above object, the present invention also proposes a method for preparing a highly moisturizing hand cream based on a shea butter emulsification system, comprising the following steps: a) Combine 50-70 parts of water, 0.1-0.5 parts of panthenol, 2-5 parts of glycerin, 0.8-1.5 parts of DRY-FLO TS PURE, 1-3 parts of ammonium acryloyldimethyltaurate / VP copolymer, 0.2-0.8 parts of p-hydroxyacetophenone, and 0.05-0.2 parts of allantoin as phase A and set aside; Prepare phase B by adding 15-25 parts of avocado butter, 1-3 parts of EMULIUM DELTA MB, 0.5-1.5 parts of cetostearyl alcohol, 0.5-2 parts of PMX-200 dimethicone, 0.5-1.5 parts of argan oil, 1-5 parts of coconut caprylate / caprate, and 0.1-0.5 parts of phytosterol esters. Add 0.2-0.8 parts of 1,2-hexanediol and 0.05-0.2 parts of daily fragrance as phase C; b) Add phase A material into a water pot and heat the water pot to 80-90°C until it is completely dissolved; c) Add Phase B material into a pan and heat the pan to 80-90°C until completely dissolved; d) Pump phase A material into a vacuum homogenizer, then add phase B material into the vacuum homogenizer, and stir for 3 to 5 minutes; e) Turn on the cooling water, cool the vacuum homogenizer to below 45°C, and then add the Phase C material.

[0019] raw material: The raw materials of this application, except water, are homemade, and the rest are commercially available products.

[0020] Panthenol: purchased from Nanjing Gutian Chemical.

[0021] Glycerol: purchased from Nanjing Gutian Chemical.

[0022] DRY-FLO TS PURE: purchased from Shanghai Gaowei.

[0023] Ammonium acryloyldimethyltaurate / VP copolymer: purchased from Shanghai Aoxue.

[0024] 4-Hydroxyacetophenone: purchased from Wuhan Lingben.

[0025] Allantoin: purchased from Guangzhou Longchen Trading.

[0026] Avocado butter: purchased from Guangzhou Longchen Trading.

[0027] EMULIUM DELTA MB: purchased from Haipuen.

[0028] Cetostearyl alcohol: purchased from Nanjing Gutian Chemical.

[0029] PMX-200 polydimethylsiloxane: purchased from Nanjing Gutian Chemical.

[0030] Argan oil: purchased from Shanghai Gencai.

[0031] Coco-caprylate / caprate: purchased from Shanghai Chengyao Biotechnology.

[0032] Phytosterol esters: purchased from Shanghai Ruixi.

[0033] 1,2-Hexanediol: purchased from Wuhan Lingben.

[0034] Daily fragrance: purchased from Xiangying Flavors and Fragrances.

[0035] All of the above raw materials are preferred.

[0036] Example 1: The formulation includes the following components in parts by weight: Phase A: Panthenol: 0.3 parts; Glycerin: 4 parts; DRY-FLO TS PURE: 1.2 parts; Ammonium Acryloyldimethyl Taurate / VP Copolymer: 1.5 parts; Parahydroxyacetophenone: 0.5 parts; Allantoin: 0.1 parts; Phase B: Shea Butter: 20 parts; Emulium Delta MB: 2.5 parts; Cetostearyl Alcohol: 0.8 parts; PMX-200 Dimethicone: 1 part; Argan Oil 0.8 parts; Coco-Caprylate / Caprate: 3 parts; Phytosterol Esters: 0.3 parts; Phase C: 1,2-hexanediol: 0.5 parts; daily fragrance: 0.1 parts; The total weight of phase A, phase B, and phase C is 100 parts, and the balance is made up by water.

[0037] Preparation method: a) Weigh the components according to the above formula proportions. Set water to 63.4 parts, panthenol, glycerin, DRY-FLO TSPURE, ammonium acryloyldimethyltaurate / VP copolymer, parahydroxyacetophenone, and allantoin as Phase A; set aside shea butter, EMULIUM DELTA MB, cetostearyl alcohol, PMX-200 dimethicone, argan oil, coco-caprylate / caprate, and phytosteryl esters as Phase B; set aside 1,2-hexanediol and fragrance as Phase C. b) Add phase A material into a water pot and heat the water pot to 80-90°C until it is completely dissolved; c) Add Phase B material into a pan and heat the pan to 80-90°C until completely dissolved; d) Pump phase A material into a vacuum homogenizer, then add phase B material into the vacuum homogenizer, and stir for 3 to 5 minutes; e) Turn on the cooling water, cool the vacuum homogenizer to below 45°C, and then add the Phase C material.

[0038] Examples 2-3 and Comparative Examples 1-3 are based on the method of Example 1, with adjustments made to the amounts of raw materials. Specific adjustments are shown in Table 1 below, in parts.

[0039] The preparation methods of Examples 2-3 and Comparative Examples 1-3 are the same as that of Example 1.

[0040] Table 1 shows the raw materials and proportions of the hand creams of Examples 1-3 and Comparative Examples 1-3, which are composed of the following raw materials in parts by weight:

[0041]

[0042] Note: Examples 1-3 demonstrate hand cream formulas with different ratios, aiming to optimize the ratio of each ingredient to achieve optimal performance; Comparative Examples 1-3: Each comparative example lacks a key ingredient for comparative analysis of the effect of the ingredient on the performance of the hand cream. Comparative Example 1 lacks avocado butter, Comparative Example 2 lacks EMULIUM DELTA MB, and Comparative Example 3 lacks DRY-FLOTS PURE. The missing raw materials are supplemented with water, and the total weight of the hand cream remains unchanged.

[0043] Efficacy testing Experiment 1: Stability Experiment Experimental method: According to the Chinese QB / T1857-2004 standard, the hand creams of Examples 1-3 of the present invention and Comparative Examples 1-3 were tested for pH, heat resistance, cold resistance, and centrifugal stability.

[0044] Experimental steps: 1) pH test: Take an appropriate amount of sample and dissolve it in pure water by heating and stirring. Cool it to room temperature and measure the pH value. Measure each sample three times and take the average value. 2) Heat resistance test: Place the sample into 10 ml round-bottom centrifuge tubes with caps, tighten the caps, and place the three tubes in a 40°C constant temperature incubator for 24 hours. After returning to room temperature, visually compare the sample with the remaining tube. 3) Cold resistance test: Place the sample into 10ml round-bottom centrifuge tubes with caps, tighten the caps, and freeze three bottles at -5°C for 24 hours. After returning to room temperature, visually compare the sample with the other bottle. 4) Centrifugal stability test: Take an appropriate amount of sample and put it into a centrifuge tube. Place it in a centrifuge and centrifuge at 3000 r / min for 30 minutes. Then take it out and visually inspect and compare it.

[0045] Table 2 shows the sample stability of Examples 1-3 and Comparative Examples 1-3:

[0046]

[0047] Analysis of experimental results: Example 1 has a reasonable formula design, significant moisturizing effect, a stable emulsification system, and a good feel. Example 2, due to the high EMULIUM DELTA MB content, high temperatures cause emulsifier migration, resulting in uneven distribution of the oil and water phases, and a slightly hardened texture at low temperatures. Due to the high cetostearyl alcohol content, crystallization affects texture uniformity. Example 3 has a small amount of precipitation after centrifugation, slight discoloration in the heat resistance test, and a small amount of precipitation in the cold resistance test. Due to the low content of ammonium acryloyldimethyltaurate / VP copolymer, the system stability is poor. Comparative Example 1 does not contain avocado butter, has a low EMULIUM DELTA MB content, an unstable emulsification system, centrifugal separation, and poor heat and cold resistance. Comparative Example 2, without EMULIUM DELTA MB, has poor emulsification effect, an unstable system, centrifugal separation, and precipitation in heat and cold resistance. Comparative Example 3, without DRY-FLO TS PURE, has a low system viscosity, a large amount of centrifugal precipitation, severe discoloration in heat and cold resistance, and poor stability.

[0048] Experiment 2: Appearance Evaluation 120 volunteers were organized to evaluate the appearance of the hand cream of the present invention, with half men and half women divided into 6 groups, each with 20 people. There were no abnormal changes in the hand skin of all volunteers, and no external medications or cosmetics or other preparations were applied. The hand creams prepared by the volunteers using Examples 1-3 and Comparative Examples 1-3 were respectively scored for appearance, smell, spreadability, absorbency, moisturizing, comfort, and stability. The specific sensory evaluation criteria are described in Table 3.

[0049] Table 3 shows the sensory evaluation criteria:

[0050]

[0051] Table 4 is the sensory evaluation score table of hand cream Examples 1-3 and Comparative Examples 1-3:

[0052]

[0053] Result analysis: Example 1 scored full marks in color, texture, and gloss, indicating that its appearance is excellent, with uniform and natural color, fine and smooth texture, and good gloss; Examples 2-3 were slightly deducted points, mainly due to slightly insufficient absorbency and stability; Comparative Examples 1-3 scored relatively low, with obvious problems in all aspects, especially Comparative Example 3, which showed a rough texture; Taking all factors into consideration, Example 1 had the best effect.

[0054] Experiment 3: Stimulation experiment 120 volunteers were divided into 6 groups. Appropriate amounts of the hand creams of Examples 1-3 and Comparative Examples 1-3 were applied to the backs of the hands of the volunteers, covering an area of ​​approximately 3 cm × 3 cm. The hands were fixed with non-irritating adhesive tape. The adhesive tape was removed after 24 hours, and the skin was observed for irritation reactions such as erythema and edema. The results were scored according to the skin reaction grading standards in the "Safety Technical Specifications for Cosmetics" (2015). The specific results are shown in Table 5.

[0055] Table 5: Skin irritation scoring criteria (based on the degree of erythema and edema):

[0056]

[0057] Analysis of experimental results: The experimental results showed no positive reactions. Examples 1-3: did not cause skin irritation, indicating that their formulas are mild and suitable for all skin types; Comparative Examples 1-3: also did not cause skin irritation, but their formulas lacked key ingredients, which may affect the moisturizing and stability performance of the product, but were safer.

[0058] Experiment 4: Moisturizing test Experimental method: 120 volunteers were selected and divided into 6 groups. Each group used the hand creams of Examples 1-3 of the present invention and Comparative Examples 1-3, with 20 volunteers in each group. The moisture content of the skin on the left and right hands was measured using a skin moisture tester to evaluate the moisturizing effect.

[0059] Experimental steps: 1) After the subjects cleaned their hands with mild hand soap, they were placed in a constant temperature and humidity environment for 30 minutes; 2) Apply the hand cream of Examples 1-3 to the left hand and the hand cream of Comparative Examples 1-3 to the right hand, once in the morning and once in the evening, for 28 consecutive days; 3) Collect skin moisture content data 1 hour, 12 hours, 3 days, 7 days, 14 days, and 28 days after use; 4) Stop using the product 3, 7, 14, and 28 days after use and test the skin moisture level again; 5) Calculate the moisture content change rate using the following formula: Moisture content change rate (%) = (moisture value of left hand cream - moisture value of right hand cream) / moisture value of right hand cream * 100%; the lower the value, the better the moisturizing effect.

[0060] Experimental results and analysis: Table 6 shows the change rate of skin moisture content after use of Examples 1-3 and Comparative Examples 1-3:

[0061]

[0062] Analysis of experimental results: After using hand cream Examples 1-3 of the present invention, the change rate of skin moisture content was significantly lower than that of Comparative Examples 1-3, especially after 7 days, 14 days, and 28 days of use, the effect was more obvious; the shea butter content of Example 2 was lower than that of Example 1, and the moisturizing effect was slightly inferior; the content of ammonium acryloyldimethyltaurate / VP copolymer in Example 3 was lower than that of Example 1, and this ingredient had insufficient thickening and film-forming properties, which may result in a thinner product texture and reduce the skin moisturizing barrier effect; Comparative Examples 1-3 lacked shea butter, EMULIUM DELTA MB, and DRY-FLO TS PURE, respectively, and had no strong moisturizing and nourishing ingredients, resulting in poor moisturizing effect and skin repair ability, and the overall performance was inferior to the Examples.

[0063] Comprehensive analysis: Based on the above experimental results, Example 1 performed well in terms of stability, irritation, moisturizing effect and appearance evaluation, and was considered to be the best ratio scheme; the overall performance of the comparative example was reduced due to the lack of certain key ingredients, which highlights the importance of the synergistic effect of the various ingredients in the formula of Example 1.

[0064] Experiment 5: Hand Cream Trial Results 60 women with rough hand skin used the hand cream of Example 1 twice a day for one month, and the results were statistically analyzed.

[0065] Table 7 is the trial results of the hand cream of the present invention

[0066]

[0067] In summary, the hand cream of the present invention can significantly improve the roughness of hands and keep hands moisturized.

[0068] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A highly moisturizing hand cream based on an avocado fat emulsification system, characterized by: The formulation includes the following components in parts by weight: Phase A: Panthenol: 0.1-0.5 parts; Glycerin: 2-5 parts; DRY-FLO TS PURE: 0.8-1.5 parts; Ammonium Acryloyldimethyl Taurate / VP Copolymer: 1-3 parts; Parahydroxyacetophenone: 0.2-0.8 parts; Allantoin: 0.05-0.2 parts; Phase B: Shea Butter: 15-25 parts; Emulium Delta MB: 1-3 parts; Cetostearyl Alcohol: 0.5-1.5 parts; PMX-200 Dimethicone: 0.5-2 parts; Argan Oil: 0.5-1.5 parts; Coco-Caprylate / Caprate: 1-5 parts; Phytosterol Esters: 0.1-0.5 parts; Phase C: 1,2-hexanediol: 0.2-0.8 parts; daily fragrance: 0.05-0.2 parts; The total weight of phase A, phase B, and phase C is 100 parts, and the balance is made up by water.

2. The highly moisturizing hand cream based on the avocado fat emulsification system according to claim 1, characterized in that: The DRY-FLO TS PURE comprises cassava starch and polymethylsilsesquioxane, the EMULIUM DELTA MB comprises cetyl alcohol and glyceryl stearate, and the argan oil is a compound of refined argania spinosa kernel oil and vegetable oil.

3. The highly moisturizing hand cream based on the avocado fat emulsification system according to claim 1, characterized in that: The hand cream contains a moisturizer, which is one or more of panthenol, glycerin, p-hydroxyacetophenone, allantoin, shea butter, cetostearyl alcohol, phytosterol ester and 1,2-hexanediol.

4. The highly moisturizing hand cream based on avocado fat emulsification system according to claim 1, characterized in that: The hand cream contains a thickener, which is one or more of DRY-FLO TS PURE, ammonium acryloyldimethyltaurate / VP copolymer and cetostearyl alcohol.

5. The highly moisturizing hand cream based on avocado fat emulsification system according to claim 1, characterized in that: The hand cream contains an emulsifier, which is one or more of EMULIUM DELTA MB and cetostearyl alcohol. The EMULIUM DELTA MB is a nonionic emulsifier.

6. A method for preparing a highly moisturizing hand cream based on an avocado fat emulsification system, characterized in that: The following steps are involved: a) Combine 50-70 parts of water, 0.1-0.5 parts of panthenol, 2-5 parts of glycerin, 0.8-1.5 parts of DRY-FLO TS PURE, 1-3 parts of ammonium acryloyldimethyltaurate / VP copolymer, 0.2-0.8 parts of p-hydroxyacetophenone, and 0.05-0.2 parts of allantoin as phase A and set aside; Prepare phase B by adding 15-25 parts of avocado butter, 1-3 parts of EMULIUM DELTA MB, 0.5-1.5 parts of cetostearyl alcohol, 0.5-2 parts of PMX-200 dimethicone, 0.5-1.5 parts of argan oil, 1-5 parts of coconut caprylate / caprate, and 0.1-0.5 parts of phytosterol esters. Add 0.2-0.8 parts of 1,2-hexanediol and 0.05-0.2 parts of daily fragrance as phase C; b) Add phase A material into a water pot and heat the water pot to 80-90°C until it is completely dissolved; c) Add Phase B materials into a pan of oil and heat the pan to 80-90°C until completely dissolved; d) Pump phase A material into a vacuum homogenizer, then add phase B material into the vacuum homogenizer, and stir for 3 to 5 minutes; e) Turn on the cooling water to cool the vacuum homogenizer to below 45°C, then add the Phase C material.

7. The method for preparing a highly moisturizing hand cream based on a shea butter emulsification system according to claim 6, characterized in that: The formulation includes the following components in parts by weight: Phase A: Panthenol: 0.3 parts; Glycerin: 4 parts; DRY-FLO TS PURE: 1.2 parts; Ammonium Acryloyldimethyl Taurate / VP Copolymer: 1.5 parts; Parahydroxyacetophenone: 0.5 parts; Allantoin: 0.1 parts; Phase B: Shea butter: 20 parts; EMULIUM DELTA MB: 2.5 parts; Cetearyl Alcohol: 0.8 parts; PMX-200 Dimethicone: 1 part; Argan Oil 0.8 parts; Coco-Caprylate / Caprate: 3 parts; Phytosterol Esters: 0.3 parts; Phase C: 1,2-hexanediol: 0.5 parts; daily fragrance: 0.1 parts; The total weight of phase A, phase B, and phase C is 100 parts, and the balance is made up by water.

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