Moisturizing and repairing lotion and preparation method thereof

Abstract

The invention discloses a moisturizing and repairing lotion and a preparation method thereof. The raw materials of the squalane and oat beta-glucan emulsion comprise the following components in percentage by weight: 2.0%-10.0% of squalane, 1.0%-3.0% of oat beta-glucan, 2.0%-10.0% of polyhydric alcohols, 0.1%-0.3% of a thickening agent, 2.0%-4.0% of a compound emulsifier, 7%-11% of other grease and the balance of deionized water. According to the moisturizing and repairing lotion disclosed by the invention, the emulsifying agent is oriented and compact and is matched with the thickening agent, so that the stability of the moisturizing and repairing lotion product is relatively good. When in use, the moisturizing repair lotion is excellent in skin feeling, not greasy, light, thin, breathable, good in mildness and suitable for sensitive skin. All the active ingredients cooperate with one another, after the repairing lotion is used for 2 hours and 7 days, the percutaneous moisture loss can reach 28.4% and 33.7%, and the repairing lotion has a good barrier repairing effect on the skin.

Description

Technical Field

[0001] The invention relates to a moisturizing and repairing lotion and a preparation method thereof. Background Art

[0002] In recent years, with the changes in people's dietary structure, environmental pollution, and increased life and work pressure, the occurrence of sensitive skin has a tendency to increase. On the other hand, people's frequent use of makeup / makeup removal products and facial cleansing products damages skin cells, thereby reducing skin immunity, thinning the stratum corneum, reducing skin moisture, and damaging the barrier function, making it impossible to effectively resist external stimuli, thereby causing fever, itching, redness, stinging and other phenomena. Therefore, skin sensitivity has become a social problem that affects human health. In view of the above situation, raw materials from plant sources with soothing and repairing effects are added to skin care lotions to give the products good soothing and repairing effects. Even for sensitive skin, the use of these compositions will not cause redness, swelling, irritation and other discomforts. The market demand for soothing and repairing cosmetics is increasing, and consumers are in urgent need of effective, gentle, safe, non-irritating, and non-sticky and heavy repair lotion products suitable for sensitive skin to improve their skin conditions. Summary of the invention

[0003] Based on the above background technology, the purpose of the present invention is to provide a moisturizing and repairing lotion and a preparation method thereof, which has moisturizing and repairing effects and natural and mild characteristics.

[0004] The repairing lotion product of the present invention is compounded with a specific hydrogenated lecithin emulsifier. The emulsifier molecules are tightly oriented and cooperate with the thickener to ensure the excellent stability of the emulsion product. At the same time, the moisturizing repairing lotion has a good skin feel, is easy to absorb, is non-greasy when used, is light and breathable, and is particularly suitable for sensitive skin.

[0005] One aspect of the present invention provides a moisturizing repair lotion, wherein the repair lotion comprises the following components: Squalane 2.0-10.0%, oat beta-glucan 1.0-3.0%, polyol 2.0-10.0%, thickener 0.1-0.3%, compound emulsifier 2.0-4.0%, other oils 7-11%, deionized water balance, the above percentages are all the mass percentages of each component relative to the repair milk product; The compound emulsifier is a mixture of hydrogenated lecithin A and hydrogenated lecithin B, and the mass ratio of hydrogenated lecithin A to hydrogenated lecithin B is 2 to 5:1. The phospholipid content of the hydrogenated lecithin A is 25-35%, and the phospholipid content of the hydrogenated lecithin B is 55-65%.

[0006] Further, the hydrogenated lecithin A is NIKKOL LECINOL S-10, and the hydrogenated lecithin B is NIKKOLLECINOL S-10M; Further, the amount of squalane is 5.0%; Further, the amount of oat β-glucan is 2.0%; Further, the dosage of the compound emulsifier is 3.0%; Further, the mass ratio of the hydrogenated lecithin A to the hydrogenated lecithin B is 4:1; Furthermore, the type of the polyol is conventional in the art, preferably glycerol or butanediol; Furthermore, the type of the thickener is conventional in the art, preferably one or more of carbomer, polyacrylate crosspolymer-6, ammonium acryloyldimethyltaurate / VP copolymer, such as carbomer.

[0007] In the present invention, the remaining oils are conventional oils in the art, and are further selected from one or more of caprylic / capric triglyceride, dimethicone, and bis-diglyceryl polyacyl adipate-2. Furthermore, the three ingredients of caprylic / capric triglyceride, dimethicone, and bis-diglyceryl polyacyl adipate-2 are simultaneously contained.

[0008] Furthermore, the addition amount of the polydimethylsiloxane is 2-3%, the addition amount of the caprylic / capric triglyceride is 3-5%, the addition amount of the bis-diglyceryl polyacyl adipate-2 is 2-3%, and the viscosity of the polydimethylsiloxane is 30 cst to 100 cst.

[0009] Furthermore, the moisturizing repair lotion may contain conventional additives in the cosmetic field, such as chelating agents, preservatives, flavors, etc. Further, the chelating agent may be selected from EDTA-2Na, with a content of 0.01 to 0.1%, the preservative may be selected from p-hydroxyacetophenone, with a content of 0.2 to 0.5%, and the flavor content is 0.02 to 0.2%.

[0010] Furthermore, the viscosity of the moisturizing repair lotion ranges from 7000 to 14000 cps, and the viscosity is measured using a Brookfield VISCOMETER DV2T instrument, rotor number RV-05, and a rotation speed of 5 RPM.

[0011] The present invention also provides a method for preparing the repair lotion, which is prepared by the following steps: i) mixing polyol, thickener, oat β-glucan and water to form an aqueous phase; ii) mixing squalane, other oils and compound emulsifier to form an oil phase; iii) mixing the oil phase and the water phase homogeneously, and cooling to obtain the repair lotion.

[0012] Wherein, the mixing temperature of the water phase is 70-80°C; the mixing temperature of the oil phase is 70-80°C; The step of mixing and homogenizing the oil phase and the water phase is high-speed homogenization for 5-15 minutes, and further, the homogenization speed is 5000 rpm; Furthermore, the moisturizing and repairing lotion is cooled to 40-45° C., a pH adjuster and / or a preservative, and a flavor are added, and then the mixture is stirred and cooled naturally, and then discharged after being cooled to 30° C.

[0013] The positive and progressive effects of the present invention are: The moisturizing repairing lotion of the present invention has tightly oriented emulsifier molecules and cooperates with the thickener, so that the moisturizing repairing lotion product has good stability. After the accelerated test (50°C) and the follow-up observation for 2W (weeks), the product has no oil-water separation.

[0014] The moisturizing repair lotion has an excellent skin feel when used, is non-greasy, light and breathable, and has good mildness, making it suitable for sensitive skin. The active ingredients work together, and after using the repair lotion for 2 hours and 7 days, the TEWL improvement rate can reach 28.4% and 33.7%, respectively, which has a good moisturizing barrier repair effect on the skin. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 From left to right are the photos of Example 1 and Comparative Examples 1-5 after centrifugation experiments. DETAILED DESCRIPTION

[0016] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples. The experimental methods in the following examples without specifying specific conditions are carried out according to conventional methods and conditions, or selected according to the product specifications.

[0017] In the following examples and comparative examples, the raw materials and manufacturers used are as follows: Carbopol 981 Polymer, LUBRIZOL); ammonium acryloyldimethyl taurate / VP copolymer (Aristoflex AVC, Klein); polyacrylate cross-linked polymer-6 (SEPIMAX ZEN, Sebico); hydrogenated lecithin (NIKKOL LECINOL S-10, NIPPON); hydrogenated lecithin (NIKKOL LECINOL S-10M, NIPPON); squalane (NIKKOL SUGAR SQUALANE, NIPPON); bis-diglyceryl polyacyl adipate-2 (SOFTISAN® 649, IOI Oleo GmbH); caprylic / capric triglyceride (Myritol 318 RC, BASF); polydimethylsiloxane (XIAMETER™ PMX-200 Silicone Fluid 50cSt, Dow); lecithin (BASIS LP-20B, OLILIO); Polyglyceryl-3 Methyl Glucose Distearate (TEGO CARE450 MB, EVONIK); Glyceryl Stearate / PEG-100 Stearate (TEGO CARE 165 MB, EVONIK); Ceteareth-25 (SP BRIJ CS25 MBAL-PA-(SG), Croda); Cetearyl Olivate / Sorbitan Olivate (OLIVEM 1000, HALLSTAR); Oat β-Glucan (Avena β-Glucan, Beijing Oriental Miaosen Biotechnology Co., Ltd.); Phenoxyethanol (NEOLONE PH 100, Danisco).

[0018] In the following examples and comparative examples, the instruments and manufacturers used are as follows: Viscometer: Brookfield VISCOMETER DV2T (Brookfield Enginering Labs., Inc.); Stability analysis instrument: LUMiFuge (Rohm Jiangsu Instrument Co., Ltd.), Transepidermal water loss measuring instrument: Delfin Vapometer (Delfin Technologies Ltd.), Ultra-high-speed stirring device: JKROBOMICS (Primix) (Shanghai Primix Machinery Co., Ltd.), Example 1

[0019] Water phase: Heat 5 parts by mass of glycerol, 0.15 parts by mass of carbomer thickener, and 5 parts by mass of oat β-glucan deionized water to 75°C and mix well. Oil phase: 5 parts by mass of squalane, 2.4 parts by mass of NIKKOL LECINOL S-10, 0.6 parts by mass of NIKKOLLECINOL S-10M, 2 parts by mass of polydimethylsiloxane, 5 parts by mass of caprylic / capric triglyceride, and 2 parts by mass of bis-diglyceryl polyacyl adipate-2 were heated to 75° C. and mixed evenly.

[0020] The aqueous phase raw material and the oil phase raw material were mixed evenly, and homogenized at 5000 rpm for 10 minutes. After that, 0.1 parts by weight of aminomethyl propanol and 0.3 parts by weight of phenoxyethanol were added when the emulsion was cooled to 40°C, and then stirring was continued and the temperature was naturally cooled. A pH regulator and a preservative were added, and the mixture was cooled to 30°C and discharged. The preparation methods of Examples 2-4 were the same as those of Example 1, except that the types and contents of the raw materials were different. The specific names and contents of the raw materials are shown in Table 1.

[0021] Table 1: Examples of raw materials and ratios

[0022] Comparative Examples 1-5 In Comparative Examples 1-5, except for the type of emulsifier, other raw materials and amounts are the same as in Example 1, wherein the portion less than 100 parts in Comparative Example 5 is supplemented with water. The types of emulsifiers used in each comparative example are shown in Table 2.

[0023] The preparation method of the repairing lotion of Comparative Examples 1-5 is the same as that of Example 1.

[0024] Table 2 Comparative Examples 1-5 Emulsifier Type

[0025] Effect test Room temperature stability: The samples obtained from Examples and Comparative Examples 1-5 were centrifuged at 3000 rpm for 30 minutes, and the degree of stratification was visually observed. Test results are shown in Figure 1 And Table 3, Viscosity: The viscosity of the emulsions of Examples 1-4 and Comparative Examples 1-5 was tested at 25±1°C for 1 hour using a Brookfield VISCOMETER DV2T viscometer, with a rotor of RV-05 and a rotation speed of 5 RPM. The test results are shown in Table 3.

[0026] Thickness: The tester applied the repair lotion on the hands to preliminarily evaluate the lightness or thickness of the lotion. The test results are shown in Table 3.

[0027] Viscosity: The viscosity of the emulsions of Examples 1-4 and Comparative Examples 1-5 was tested at 25±1°C for 1 hour using a Brookfield VISCOMETER DV2T viscometer, with a rotor of RV-05 and a rotation speed of 5 RPM. The test results are shown in Table 3.

[0028] Thickness: The tester applied the repair lotion on the hands to preliminarily evaluate the lightness or thickness of the lotion. The test results are shown in Table 3.

[0029] Table 3 Test results of stratification, viscosity and thickness

[0030] Among them, Examples 1-4 did not have stratification after centrifugation, and the repairing milk had good stability at room temperature, Comparative Examples 1-2 had a little stratification at the bottom after centrifugation, and Comparative Examples 3-4 had obvious stratification after centrifugation. Comparative Example 5 did not have stratification.

[0031] Since conventional β-glucan has poor water solubility, it is difficult to stabilize it when used in emulsion formulations and cannot effectively penetrate the skin to exert physiological activity. As shown in Table 3, glyceryl stearate / PEG-100 stearate, polyglyceryl-3 methylglucose distearate, lecithin, etc. cannot form a stable emulsification system. If a stable emulsion containing β-glucan is required, an emulsifier containing cetearyl olivate / sorbitan olivate must be used in combination with lecithin.

[0032] However, when the compound emulsifier of lecithin and cetearyl olivate / sorbitan olivate is added in an amount of 2.9%, the viscosity of the emulsion formed is relatively high. When used on the skin, it tends to feel heavy and greasy, not refreshing, and not breathable. This kind of skin care product is not suitable for people with sensitive skin and oily skin. When used as a moisturizing repair lotion, it is more likely to cause skin discomfort.

[0033] Examples 5-6 and Comparative Examples 6-7 further evaluate the effect of the mass ratio of lecithin A and lecithin B on the moisturizing repair lotion. Comparative Examples 6-7 and other components and preparation methods of Examples 5-6 are the same as those of Example 1, except that the contents of emulsifier A and emulsifier B are adjusted. The mass ratios of the compound emulsifiers are shown in Table 4. Table 4 Compound emulsifiers with different mass ratios

[0034] LUMiFuge high temperature stability analysis data The emulsion products of Comparative Examples 5-8 and Examples 1, 4, 5, and 6 were subjected to high temperature stability analysis using a LUMiFuge instrument (see Table 5) to evaluate the storage stability of the emulsion at high temperature, wherein the test conditions were: 50°C, 4000rpm, 30min.

[0035] Table 5 Evaluation of stability and interface migration speed

[0036] As shown in Table 5, when using hydrogenated lecithin in different proportions, there is no significant difference in stability index under a high temperature simulation environment of 50°C, but the difference in interface migration speed is obvious. The smaller the interface migration speed, the better the product stability. Among them, the interface migration speed of Comparative Examples 6-8 is high. Comparative Example 6 uses only one hydrogenated lecithin emulsifier A, and when the mass ratio of emulsifier A to emulsifier B in Comparative Example 7 is 6:1, and when the mass ratio of emulsifier A to emulsifier B in Comparative Example 7 is 1:1, the migration speed exceeds 200 μm / s.

[0037] After 2 weeks of storage and tracking observation at 50°C, the product appearance was visually observed as shown in Table 6. Table 6 High temperature storage stratification

[0038] As can be seen from Table 6, after 4 weeks (weeks) of storage tracking observation at room temperature, oil-water stratification was observed in Comparative Examples 6-8, which does not meet the high temperature resistance test requirements of the repairing lotion product. This indicates that oil-water stratification may occur when the above emulsion is stored at high temperature. Therefore, hydrogenated lecithin emulsifier A and lecithin emulsifier B need to be within a certain range to provide sufficient high temperature storage performance for the moisturizing repairing lotion.

[0039] Repair effect test Women with sensitive skin were selected, and the restoring and repairing lotions of Example 1 and Comparative Example 5 were applied to the left and right faces, respectively, once in the morning and once in the evening. After washing the face, the repairing effect of the moisturizing and repairing lotion was tested.

[0040] The transepidermal water loss (TEWL) test of the skin was conducted using a Delfin Vapometer probe. The time points were the baseline value, 2h (hours), and after 7d (days) of continuous use. The transepidermal water loss was measured three times and the average value was taken. The changes in the average values ​​of skin TEWL before and after the use of the repair lotion of Example 1 and Comparative Example 5 were compared to evaluate the repair function of the product. The results are shown in Table 7.

[0041] Table 7 Moisture retention test results

[0042] It can be seen from the data in Table 7 that after using the repair lotion of Example 1 and Comparative Example 5 for 2 hours and 7 days, the TEWL improvement rates are 28.4% and 33.7% respectively, indicating that the moisturizing repair lotion of Example 1 has a good repair effect compared with Comparative Example 5. The reduction in the evaporation rate of skin water allows the skin to be fully moisturized and nourished, and the skin barrier is repaired and restored.

[0043] Sensory test Ten women with sensitive skin were selected to test the skin feel of the moisturizing repair lotion when using it.

[0044] The following indicators were scored: Among them, the results of Example 1 and Comparative Example 5 are compared in Table 8: Absorbency: The number of application cycles required for the product to be completely absorbed (0 difficult → 10 easy) Spreadability: How easy it is to move the product across the skin after applying a specified number of circles (0 difficult → 10 easy) Stickiness: The stickiness of the product on the skin after it is completely absorbed (0 large → 10 small).

[0045] Post-use softness: The softness of the residual film left on the skin after the product is fully absorbed. (0 is no softness → 10 gives the skin a very high degree of softness) Mildness: Evaluate whether the product causes redness, stinging, or itching on sensitive skin after use. (0 means poor mildness → 10 means good mildness) Table 8 Comparison of sensory evaluation

[0046] It can be seen from Table 8 that compared with Comparative Example 5, the product of Example 1 is more mild, but the spreadability of the comparative example emulsion is relatively poor, and the skin feels sticky after the product is absorbed. When the emulsion obtained in Example 1 is used, the skin feel is more popular among women with sensitive skin.

[0047] The embodiments described above only express several implementation methods of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art may make various equivalent modifications or substitutions without departing from the creative spirit of the present invention. These all belong to the scope of protection of the present invention and should be subject to the claims.

Claims

1. A moisturizing repair lotion, characterized in that: The repairing milk contains the following components: squalane 2.0-10.0%, oat β-glucan 1.0-3.0%, polyol 2.0-10.0%, thickener 0.1-0.3%, compound emulsifier 2.0-4.0%, other oils 7-11%, deionized water balance, the above percentages are all the mass percentages of each component relative to the repairing milk product; Wherein, the compound emulsifier is a mixture of hydrogenated lecithin A and hydrogenated lecithin B, and the mass ratio of hydrogenated lecithin A to hydrogenated lecithin B is 2-5:

1.

2. The moisturizing repair lotion according to claim 1, characterized in that: The hydrogenated lecithin A contains 25-35% lecithin, and the hydrogenated lecithin B contains 55-65% lecithin.

3. The moisturizing repair lotion according to claim 1, characterized in that: The hydrogenated lecithin A is NIKKOL LECINOLS-10, and the hydrogenated lecithin B is NIKKOL LECINOL S-10M.

4. The moisturizing repair lotion according to claims 1-3, characterized in that: The mass ratio of the hydrogenated lecithin A to the hydrogenated lecithin B is 4:

1.

5. The moisturizing repair lotion according to claim 1, characterized in that: The polyol is glycerol and / or butylene glycol, the thickener is one or more of carbomer, polyacrylate cross-linked polymer-6, ammonium acryloyldimethyltaurate / VP copolymer, the amount of squalane is 5.0%, the amount of oat β-glucan is 2.0%, and the amount of the compound emulsifier is 3.0%.

6. The moisturizing repair lotion according to claim 1, characterized in that: The moisturizing repair lotion contains a chelating agent, a preservative, and a flavor. Preferably, the chelating agent is EDTA-2Na, and the content thereof is 0.01 to 0.1%. The preservative is hydroxyacetophenone, and the content thereof is 0.2 to 0.5%. The content of the flavor is 0.02 to 0.2%.

7. The moisturizing repair lotion according to claim 1, characterized in that: The remaining oils are one or more of caprylic / capric triglyceride, dimethicone, and bis-diglyceryl polyacyl adipate-2. Preferably, caprylic / capric triglyceride, dimethicone, and bis-diglyceryl polyacyl adipate-2 are contained at the same time. The viscosity of the dimethicone is 30 cst to 100 cst. Preferably, the viscosity of the dimethicone is 50 cst.

8. The moisturizing repair lotion according to claim 7, characterized in that: The content of the polydimethylsiloxane is 2-3%, the content of the caprylic / capric triglyceride is 3-5%, and the content of the bis-diglyceryl polyacyl adipate-2 is 2-3%.

9. The moisturizing repair lotion according to claim 1, characterized in that: The viscosity of the moisturizing repair lotion ranges from 7000 to 14000 cps, and the viscosity is tested using a Brookfield VISCOMETER DV2T viscosity tester with a rotor number of RV-05 and a rotation speed of 5 RPM.

10. A method for preparing the moisturizing repair lotion as claimed in claim 1, characterized in that: Prepared by the following steps: i) mixing polyol, thickener, oat β-glucan and water to form an aqueous phase; ii) mixing squalane, other oils and fats, and a compound emulsifier to form an oil phase; iii) mixing the oil phase and the water phase homogenously, and cooling to obtain the moisturizing repair lotion.

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