An efficient water-locking and moisturizing composition and cosmetics

Abstract

The present invention relates to the technical field of cosmetics, and more particularly to a highly effective water-locking and moisturizing composition and cosmetics. The highly effective water-locking and moisturizing composition comprises the following components: xylitol, tremella polysaccharide, sodium hyaluronate, acetyl glucosamine, trehalose, and phytosterol oleate, and has the advantages of excellent moisturizing and water-locking effects and high emulsion stability.

Description

Technical Field

[0001] The present invention relates to the technical field of cosmetics, and in particular to a high-efficiency water-locking and moisturizing composition and cosmetics. Background Art

[0002] The skin is an important water reservoir of the human body. About 75% of the water is stored in the skin, and the water content of the stratum corneum is generally between 10% and 20%. When the skin is well hydrated, all the cells and organelles inside are immersed in body fluids, carrying out normal metabolism and transmitting information, thereby maintaining normal tissue structure and physiological functions, ensuring the normal function of the skin barrier, and resisting the invasion and stimulation of adverse external factors; externally, the skin appears hydrated, smooth, delicate, elastic and shiny.

[0003] When the water content of the skin's stratum corneum drops below 10% for various reasons, the skin becomes dry and tight, with fine flaking and even fine wrinkles. Chronically dehydrated skin can also become cracked, sagging, dull, and highly susceptible to allergies. Oily skin can experience an imbalance of water and oil levels due to dehydration, leading to increased oiliness and acne breakouts, enlarged pores, and other issues. Therefore, daily skincare should prioritize hydration and moisturizing to help maintain the skin's stratum corneum at an optimal hydration level. This will improve all skin concerns.

[0004] While there are numerous hydrating and moisturizing skincare products on the market, most offer unsatisfactory results. First, most products only replenish moisture in the skin's surface layer, failing to penetrate the dermis and improve moisture levels, thus failing to fundamentally address dry skin. Second, some hydrating and moisturizing products currently on the market use natural plant and herbal extracts, most of which are extracted with organic solvents. This often leaves some residual solvent in the cosmetics, posing a safety risk to users.

[0005] Existing moisturizing lotions are usually liquid emulsified pastes of the oil-in-water or oil-in-water type formed by the action of oil-soluble components and water-soluble components through the action of emulsifiers, and the content of oil-soluble components is usually relatively large, so that the moisturizing lotion has a better moisturizing and water-locking effect and fits better to the skin.

[0006] However, existing moisturizing lotions on the market are prone to instability when containing a high content of oil-soluble components, which is not conducive to the storage and use of the lotion. In addition, many existing moisturizing lotions on the market focus solely on hydrating, moisturizing, and emollient functions, but lack a breakthrough in improving the skin feel. The skin feels greasy and heavy, and the feel is poor. Moreover, by focusing only on hydrating, moisturizing, and emollient effects, the skin care is only superficial, lacking the ability to deeply care for the skin, failing to fundamentally improve and condition the skin, and thus failing to achieve long-term and effective skin care.

[0007] Common emulsification systems include oil-in-water (O / W) and water-in-oil (W / O), as well as phase-shift and microemulsion systems. Emulsion products are becoming increasingly diverse, with increasingly diverse functions. However, most emulsions on the market are primarily O / W or W / O systems, with some also featuring multiple emulsions like W / O / W or O / W / O. Each has its own advantages and disadvantages, with formulas offering varying skin feel and stability significantly impacted by temperature fluctuations.

[0008] Both oil-in-water and water-in-oil emulsion systems have their own advantages and disadvantages. Water-in-oil systems offer rich texture, a glossy appearance, excellent water resistance, easier adherence to the skin, and excellent moisturizing and hydration. They also significantly outperform oil-in-water systems in terms of moisturization and radiance after use. However, they can feel sticky and heavy when applied initially, and their formula stability is significantly affected by temperature fluctuations. Formula design and production process control are more difficult than with oil-in-water systems. While oil-in-water systems leave skin feeling refreshed and hydrated initially, they offer less moisturizing properties later in life.

[0009] Chinese patent application CN111110606A discloses a moisturizing composition, its preparation method, and a moisturizing lotion. The moisturizing composition is composed of the following components: hydroxyethylcellulose, sodium hyaluronate, a humectant, creatine, an emulsifier, an emollient, diethylhexyl carbonate, ginseng root water, magnolia sieboldii extract, a preservative, a fragrance, and the remainder is water. The moisturizing composition has a highly effective moisturizing and water-locking effect and provides deep care for the skin by replenishing qi and blood, promoting metabolism, and fundamentally improving and conditioning the skin, achieving long-term and effective skin care and slowing down skin aging. The preparation method of the invention can produce a moisturizing composition in which the components are evenly mixed and dispersed, and the composition is stable in form. The moisturizing lotion of the invention contains the moisturizing composition as an active ingredient, and is presented in the form of a thin, flowing liquid like milk. The emulsion is stable and highly safe, and has a moisturizing, non-sticky, and oily, non-heavy, and excellently smooth feel when applied to the skin. However, the moisturizing and water-locking effects of the moisturizing lotion need to be further improved.

[0010] Therefore, it is very necessary to develop an efficient water-locking and moisturizing composition and cosmetics that can solve the above technical problems. Summary of the Invention

[0011] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a highly effective water-locking and moisturizing composition and cosmetics.

[0012] The present invention is achieved through the following technical solutions:

[0013] A high-efficiency water-locking and moisturizing composition comprises the following components: xylitol, tremella polysaccharide, sodium hyaluronate, acetyl glucosamine, trehalose and phytosterol oleate.

[0014] Acetyl glucosamine, also known as N-acyl glucosamine, participates in the synthesis of hyaluronic acid. In the human body, hyaluronic acid is a major component of the extracellular matrix and is widely distributed in joints, epithelial cells, and neural tissue. Hyaluronic acid is also responsible for maintaining skin moisture and moisturizing the skin. Acetyl glucosamine, as a substrate for hyaluronic acid synthesis, can replenish hyaluronic acid in the skin when hyaluronic acid levels are low.

[0015] Preferably, the high-efficiency water-locking and moisturizing composition comprises the following components in parts by weight: 0.1-1 part of xylitol, 0.05-0.2 part of tremella polysaccharide, 0.01-0.05 part of sodium hyaluronate, 0.1-1 part of acetyl glucosamine, 1-2 parts of trehalose and 0.01-0.1 part of phytosterol oleate.

[0016] Preferably, the high-efficiency water-locking and moisturizing composition further comprises at least one of panthenol and amino acid.

[0017] Panthenol protects the skin barrier and, when combined with amino acids, protects against external stimuli and prevents skin damage. It also promotes wound healing, thus providing anti-inflammatory and antibacterial benefits.

[0018] More preferably, the amino acid is trimethylglycine.

[0019] More preferably, the amount of panthenol is 0.1-1 parts by weight.

[0020] More preferably, the amount of trimethylglycine is 1-2 parts by weight, preferably 1.5 parts.

[0021] The present invention also relates to a cosmetic comprising the above-mentioned high-efficiency water-locking and moisturizing composition.

[0022] Preferably, the cosmetic further comprises at least one of sorbitan stearate, sucrose cocoate, glyceryl stearate and PEG-100 stearate.

[0023] More preferably, the cosmetic further comprises sorbitan stearate, sucrose cocoate, glyceryl stearate and PEG-100 stearate, wherein the total mass ratio of sorbitan stearate and sucrose cocoate to the total mass ratio of glyceryl stearate and PEG-100 stearate is 2-3:1.

[0024] More preferably, the total amount of sorbitan stearate, sucrose cocoate, glyceryl stearate and PEG-100 stearate is 4-5 parts by weight; the mass ratio of sorbitan stearate to sucrose cocoate is 1:1-2, and the mass ratio of glyceryl stearate to PEG-100 stearate is 1-2:1.

[0025] Preferably, the cosmetic further comprises at least one of water, butylene glycol, glycerin, betaine, cetearyl alcohol, dimethicone, bisabolol, tocopherol, ascorbyl palmitate, p-hydroxyacetophenone and ethylhexylglycerin.

[0026] More preferably, the cosmetic further comprises, by weight, 70-80 parts of water, 3-7 parts of butylene glycol, 0.5-2 parts of glycerin, 1-2 parts of betaine, 2-3 parts of cetearyl alcohol, 0.5-2 parts of polydimethylsiloxane, 0.05-0.2 parts of bisabolol, 0.1-0.2 parts of tocopherol, 0.1-0.2 parts of ascorbyl palmitate, 0.3-0.7 parts of p-hydroxyacetophenone and 0.05-0.2 parts of ethylhexylglycerin.

[0027] Preferably, the cosmetic is an emulsion.

[0028] The beneficial effects of the present invention are:

[0029] The high-efficiency water-locking and moisturizing composition of the present invention has remarkable effects in water-locking and moisturizing. The multiple components contain hydrophilic groups, have good mutual solubility, promote each other, work together, have good transdermal absorption effect, and have high emulsification stability.

[0030] The xylitol, acetyl glucosamine, and trehalose in the composition of the present invention have relatively low molecular weights, while the tremella polysaccharide and sodium hyaluronate have relatively high molecular weights. The moisturizing ingredients of different molecular weights are absorbed into the stratum corneum and dermis of the skin, respectively, resulting in a significant synergistic effect, achieving a three-dimensional moisturizing effect and forming a barrier on the skin surface, thereby achieving a moisturizing and water-locking effect, ensuring that the skin does not dry out. The phytosterol oleate has a certain moisturizing effect and high emulsion stability, forming an oil-in-water emulsion and forming a barrier on the skin surface, improving the water-locking effect. Simultaneously, the xylitol can also promote emulsification stability.

[0031] The sorbitan stearate, sucrose cocoate, glyceryl stearate and PEG-100 stearate of the present invention can form a specific liquid crystal structure after being mixed with phytosterol oleate, which has a significant synergistic effect, long-term moisturizing and a cooling feeling. The formed liquid crystal structure is easy to enter the dermis layer, forming an absorption channel for active ingredients.

[0032] The raw material cost of the invention is low and the usage amount is small, which is beneficial to reducing production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 The test results are magnified 100 times at 0 min after smearing.

[0034] Figure 2 The test results are magnified 200 times at 0 min after smearing.

[0035] Figure 3 The test results are shown after 30 minutes of application and magnification of 100 times.

[0036] Figure 4 The test results are shown after 30 minutes of application and magnification of 200 times. DETAILED DESCRIPTION

[0037] The present invention will be further described below with reference to specific embodiments, and the advantages and features of the present invention will become clearer as the description proceeds. However, these embodiments are merely exemplary and do not constitute any limitation to the scope of the present invention. It should be understood by those skilled in the art that the details and forms of the technical solutions of the present invention may be modified or replaced without departing from the spirit and scope of the present invention, and such modifications and replacements fall within the scope of protection of the present invention.

[0038] The emulsion formulas (by weight) of the examples and comparative examples are shown in Table 1 and Table 2. Phytosterol oleate was purchased from Shaanxi Haohai Bioengineering Co., Ltd., item number HH-22714004.

[0039] Table 1

[0040]

[0041]

[0042] Table 2

[0043] Serial number raw material Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 1 Xylitol 2.5 0 0.5 0.5 0.5 2 Tremella polysaccharide 0.1 0.1 0.1 0.1 0.1 3 Sodium hyaluronate 0.02 0.02 0.02 0.02 0.02 4 Acetyl glucosamine 0 0.625 0.5 0.5 0.5 5 Trehalose 0 1.875 1.5 1.5 1.5 6 Phytosteryl oleate 0.05 0.05 0 0.05 0.05 7 Panthenol 0.4 0.4 0.4 0.4 0.4 8 Trimethylglycine 1.5 1.5 1.5 1.5 1.5 9 Sorbitan stearate 1 1 1 1.5 0 10 Sucrose Cocoate 2 2 2 3 0 11 Glyceryl Stearate 1 1 1 0 3 12 PEG-100 Stearate 0.5 0.5 0.5 0 1.5 13 Butanediol 5 5 5 5 5 14 glycerin 1.3 1.3 1.3 1.3 1.3 15 Betaine 1.5 1.5 1.5 1.5 1.5 16 Cetearyl Alcohol 2.5 2.5 2.5 2.5 2.5 17 Polydimethylsiloxane 1.6 1.6 1.6 1.6 1.6 18 Bisabolol 1.25 1.25 1.25 1.25 1.25 19 Tocopherol 0.15 0.15 0.15 0.15 0.15 20 Ascorbyl palmitate 0.15 0.15 0.15 0.15 0.15 21 p-Hydroxyacetophenone 0.5 0.5 0.5 0.5 0.5 22 Ethylhexylglycerin 1.4 1.4 1.4 1.4 1.4 23 water 75.58 75.58 75.63 75.58 75.58

[0044] The emulsion preparation process is as follows:

[0045] 1. Preparation. Weigh the required amount of materials according to the recipe and set aside. If the amount of raw materials is less than 3kg, use a scale with an accuracy of 0.1g, allowing a positive deviation of 0.5g. If the amount of raw materials is greater than or equal to 3kg and less than 30kg, use a scale with an accuracy of 1g, allowing a positive deviation of 5g. If the amount of raw materials is greater than or equal to 30kg, use a scale with an accuracy of 0.05kg, allowing a positive deviation of 50g.

[0046] 2. Add Phase A ingredients to a pot of water and heat to 80-85°C until completely dissolved, stirring occasionally.

[0047] 3. Add Phase B ingredients to the oil pan and heat to 80-85℃ until completely dissolved, stirring occasionally.

[0048] 4. Start stirring in the emulsifier, pump phases A and B into the emulsifier, start the homogenizer at 3000 rpm, homogenize for 7-10 minutes, and add phase C during homogenization. Keep warm at 80-85℃ for 30 minutes.

[0049] 5. Cool to 45-50℃, add phase D, and continue stirring for 10 minutes after the paste forms.

[0050] 6. Use sensory organs to judge whether the product is ready for discharging and then discharging and packaging.

[0051] 7. Take samples and send them to the quality control department for semi-finished product inspection.

[0052] 8. Collect and sterilize packaging materials, and fill and package the semi-finished products after they pass the inspection; if they fail to meet the standards, they will be reworked or scrapped.

[0053] 9. After the finished products are sampled and inspected and qualified, they are put into storage.

[0054] Among them, phase A raw materials: raw materials with serial numbers 1, 4, 5, 7, 8, 13, 14, 15, 23;

[0055] Phase B raw materials: raw materials numbered 6, 9, 10, 11, 12, 16, 17, 18, and 19;

[0056] Phase C raw materials: raw materials with serial number 3;

[0057] Raw materials for phase D: raw materials numbered 2, 20, 21, and 22.

[0058] Test Example 1 Moisturizing Effect Test

[0059] Test method: Capacitance method to measure the moisture content of the skin stratum corneum

[0060] The test area should not be used with any products (cosmetics or topical medications) for 2-3 days prior to testing, and should not come into contact with water for 1-3 hours. Before testing, participants should clean the inner forearms of both hands using a dry tissue.

[0061] The test area should be marked on the inner side of the front of the subject's hands. The test area should be at least 3cmx3cm. Multiple areas can be marked on the same arm at the same time, with at least 1cm between each test area.

[0062] Before the test, you should sit quietly in a standard room for at least 20 minutes, avoiding water or other beverages. Keep your forearm exposed and in the test position, and remain relaxed.

[0063] The product application area and blank control area should be randomly distributed in the marked areas of the left and right arms to ensure that the positions of all product application areas and blank control areas are statistically balanced.

[0064] The test sample is (20±0.1) mg / cm 2 Apply the sample evenly to the dry test area using a latex fingertip. Record the actual amount of sample applied.

[0065] After adjusting the capacitive skin moisture meter according to the user manual, measure the product application area and the blank control area, performing at least three replicate measurements on each area. First, measure the initial value of each test area (before sample application), then measure the skin moisture content of the test and control areas after a set time. The set time should be greater than 1 hour, and multiple measurement points, such as 2 or 3 hours, can be set depending on product evaluation needs, but generally should not exceed 24 hours.

[0066] Testing on the same subject must be completed using the same instrument and by the same person. The measuring probe must be cleaned between measurements. If a volunteer experiences an adverse skin reaction during product use, testing must be terminated immediately and the volunteer must receive appropriate medical treatment. Any adverse reactions must be recorded. The test results are shown in Table 3.

[0067] Table 3 Moisturizing effect test

[0068] product 1h 2h 3h Example 1 58.56％ 59.45％ 59.85％ Example 2 64.35％ 66.60％ 67.10％ Example 3 61.25％ 63.70％ 64.25％ Example 4 59.55％ 60.12％ 60.25％ Comparative Example 1 58.78％ 59.10％ 57.55％ Comparative Example 2 58.25％ 58.63％ 56.90％ Comparative Example 3 57.85％ 54.30％ 53.10％ Comparative Example 4 58.66％ 58.52％ 57.05％ Comparative Example 5 60.78％ 59.20％ 57.35％

[0069] Test Example 2 Liquid Crystal Structure Test

[0070] The product of the present invention uses a polarized light microscope to observe the liquid crystal structure. The liquid crystal structure test results are as follows: Figure 1-Figure 3 As shown. Take Example 3 as an example, Figure 1 This is the test result after magnification 100 times. Figure 2 This is the test result after magnification 200 times. Figure 3 The test results are magnified 400 times.

[0071] Conventional liquid crystal emulsions have problems such as low liquid crystal structure formation rate, uneven particle size, and inability to stay near skin temperature for a long time. The emulsion of the present invention has a high liquid crystal structure formation rate, high density, and is stable near skin temperature.

[0072] The stability of the liquid crystal structure of the emulsion on the skin was observed by tape stripping method. The emulsion of the present invention was applied to the test site on the inner arm for 0 min ( Figure 1 and Figure 2 ), 30min( Figure 3 and Figure 4 ), observed by polarized light microscopy. Figure 1 and Figure 2 is the observation result at 0min of application, where Figure 1 This is the test result after magnification 100 times. Figure 2 The test results are magnified 200 times. Figure 3 and Figure 4 The observation results after 30 minutes of application are shown below. Figure 3 This is the test result after magnification 100 times. Figure 4 The test results are magnified 200 times. Figures 1-4It can be seen that after 30 minutes of application, an obvious liquid crystal structure is still observed, indicating that the liquid crystal structure of the emulsion of the present invention can be maintained on the surface of the skin for a long time, overcoming the problem that the liquid crystal structure of general emulsions cannot stay near the skin temperature for a long time.

[0073] Test Example 3 Emulsion stability test:

[0074] 1 Sensory indicators

[0075] 1.1 Aroma

[0076] Take a sample and identify it by smell.

[0077] 1.2 Appearance

[0078] Take the sample and observe visually at room temperature and out of direct sunlight.

[0079] 2 Physical and chemical indicators

[0080] 2.1 pH

[0081] Determine according to the method specified in GB / T 135311 (dilution method).

[0082] 2.2 Heat resistance

[0083] 2.2.1 Instruments

[0084] a) Thermometer: graduation value 0.5℃;

[0085] b) Electric constant temperature incubator: temperature control accuracy ±1°C.

[0086] 2.2.2 Operating procedures

[0087] Pour the sample into two 620mm x 120mm test tubes, bringing the liquid level to approximately 80mm. Plug the tubes with clean stoppers. Place one of the test tubes in a constant-temperature incubator pre-adjusted to 40°C. After 24 hours, remove the tube and allow it to return to room temperature before visually comparing it with the sample in the other tube.

[0088] 2.3 Cold resistance

[0089] 2.3.1 Instruments

[0090] a) Thermometer: graduation value 0.5℃;

[0091] b) Refrigerator: Temperature control accuracy ±2°C.

[0092] 2.3.2 Operating procedures

[0093] Pour the sample into two 620mm x 120mm test tubes, bringing the liquid level to approximately 80mm. Plug in clean stoppers. Place one test tube in a refrigerator pre-adjusted to -8°C. After 24 hours, remove it and allow it to return to room temperature before visually comparing it with the sample in the other test tube.

[0094] 2.4 Centrifugal test

[0095] 2.4.1 Instruments

[0096] a) Angular low-speed desktop centrifuge, maximum relative centrifugal force 19.6N ~ 30.7N;

[0097] b) Centrifuge tubes: 2 tubes with 10 mL graduations;

[0098] c) Electric constant temperature incubator: temperature control accuracy ±1°C;

[0099] d) Thermometer: graduation value 0.5℃.

[0100] 2.4.2 Operation

[0101] Fill the centrifuge tube to approximately 2 / 3 of its height with the sample and secure it with a stopper. Place the tube in an incubator pre-adjusted to 38°C for 1 hour. Immediately transfer the tube to a centrifuge at 2000 rpm. Spin for 30 minutes and remove for observation.

[0102] The results are shown in Table 4.

[0103] Table 4 Stability effect test

[0104]

[0105]

[0106] The above detailed description is a specific description of one feasible embodiment of the present invention. This embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification that does not depart from the present invention should be included in the scope of the technical solution of the present invention.

Claims

1. A cosmetic, characterized in that: The composition comprises the following components in parts by weight: 0.1-1 parts of xylitol, 0.05-0.2 parts of Tremella polysaccharide, 0.01-0.05 parts of sodium hyaluronate, 0.1-1 parts of acetyl glucosamine, 1-2 parts of trehalose and 0.01-0.1 parts of phytosterol oleate; The cosmetic further comprises sorbitan stearate, sucrose cocoate, glyceryl stearate and PEG-100 stearate, wherein the total mass ratio of sorbitan stearate and sucrose cocoate to the total mass ratio of glyceryl stearate and PEG-100 stearate is 2-3:1; In terms of parts by weight, the total amount of sorbitan stearate, sucrose cocoate, glyceryl stearate and PEG-100 stearate is 4-5 parts; the mass ratio of sorbitan stearate to sucrose cocoate is 1:1-2, and the mass ratio of glyceryl stearate to PEG-100 stearate is 1-2:

1.

2. The cosmetic according to claim 1, characterized in that Also included is at least one of panthenol and amino acids.

3. The cosmetic according to any one of claims 1-2, characterized in that The invention also includes at least one of water, butylene glycol, glycerin, betaine, cetearyl alcohol, dimethicone, bisabolol, tocopherol, ascorbyl palmitate, p-hydroxyacetophenone and ethylhexylglycerin.

4. The cosmetic according to claim 3, characterized in that In terms of weight, it also includes 70-80 parts of water, 3-7 parts of butylene glycol, 0.5-2 parts of glycerin, 1-2 parts of betaine, 2-3 parts of cetearyl alcohol, 0.5-2 parts of polydimethylsiloxane, 0.05-0.2 parts of bisabolol, 0.1-0.2 parts of tocopherol, 0.1-0.2 parts of ascorbyl palmitate, 0.3-0.7 parts of p-hydroxyacetophenone and 0.05-0.2 parts of ethylhexylglycerin.

5. The cosmetic according to claim 1, characterized in that The cosmetic is an emulsion.

Images