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CN-121971316-A - Preparation method of skin care moisturizer

CN121971316ACN 121971316 ACN121971316 ACN 121971316ACN-121971316-A

Abstract

The invention discloses a preparation method of a skin care humectant, which comprises the following steps of S1, heating an oil phase component to a molten state under a vacuum condition to obtain a homogeneous oil phase, S2, mixing and swelling an aqueous phase component containing a high molecular thickener under the heating condition to obtain a homogeneous aqueous phase, S3, mixing the aqueous phase and the oil phase under the vacuum condition, shearing and homogenizing at 70-80 ℃ to form a primary emulsion, then starting cooling, S4, adding a first group of active substances and dispersing uniformly when the temperature of a system is reduced to a first preset temperature interval, S5, adding a second group of active substances and dispersing uniformly when the temperature of the system is continuously reduced to a second preset temperature interval, and then regulating the pH value of the system to 5.5-6.0. The invention actively repairs the barrier by simulating skin lipid through ceramide, recombinant collagen and decarboxylated carnosine, and the ceramide and squalane.

Inventors

  • RUAN SHIXING

Assignees

  • 广东欧诺洁个人护理用品生产集团有限公司

Dates

Publication Date
20260505
Application Date
20260305

Claims (10)

  1. 1. The preparation method of the skin care humectant is characterized by comprising the following steps of: S1, heating an oil phase component to a molten state under a vacuum condition to obtain a homogeneous oil phase; S2, mixing and swelling water phase components containing a high molecular thickener under a heating condition to obtain a homogeneous water phase; s3, mixing the water phase and the oil phase under the vacuum condition, shearing and homogenizing at 70-80 ℃ to form primary emulsion, and then starting to cool; s4, when the system temperature is reduced to a first preset temperature interval, adding a first group of active substances and uniformly dispersing; and S5, when the system temperature is continuously reduced to a second preset temperature interval, adding a second group of active substances, uniformly dispersing, and then adjusting the pH value of the system to 5.5-6.0.
  2. 2. The method of claim 1, wherein the first predetermined temperature range is 53-58 ℃, the first group of active substances comprises at least ceramide, the second predetermined temperature range is 37-42 ℃, and the second group of active substances comprises at least recombinant collagen.
  3. 3. The method of claim 2, wherein the first group of active substances further comprises a Bardon sonii extract, and the second group of active substances further comprises a preservative enhancer comprising decarboxylated carnosine and p-hydroxyacetophenone.
  4. 4. The method for preparing a skin care moisturizer according to claim 1, wherein in the step S3, the shearing homogenization and the subsequent cooling process are continuously performed in the same vacuum reaction kettle, the vacuum degree of the vacuum reaction kettle is maintained at-0.05 to-0.08 MPa, and the cooling process is realized by circulating a cooling medium through a jacket.
  5. 5. The method for preparing a skin care moisturizer according to claim 1 or 4, wherein in step S3, the rotational speed of the shear homogenization is 2500-3500rpm for 4-8 minutes, and the cooling rate from the end of the homogenization to the start of step S4 is controlled to be 1.0-2.5 ℃ per minute.
  6. 6. The method for preparing the skin care moisturizer according to claim 1, wherein in the step S2, the polymer thickener is carbomer, and the swelling process comprises slowly dispersing carbomer in deionized water at 55-65deg.C under stirring, and swelling for 20-40 min under stirring at 58-62deg.C.
  7. 7. The method according to claim 6, wherein in step S3, deionized water is added to the primary emulsion to compensate for evaporation loss while maintaining vacuum and stirring after the completion of the shearing homogenization, and then cooling is performed.
  8. 8. The method for preparing a skin care moisturizer according to claim 1, wherein in step S5, after adjusting the pH of the system, the method further comprises a step of transferring the system into another vacuum tank to perform deep degassing, wherein the degree of vacuum of the deep degassing is lower than-0.07 MPa, and the time is 10 to 20 minutes.
  9. 9. The method for preparing the skin care moisturizer according to claim 8, further comprising the step of filtering the product through a 150-250 mesh precision filter after the deep degassing, and filling the filtered product into a light-resistant container with nitrogen.
  10. 10. The method of claim 1, wherein the upper limit of the first predetermined temperature range is lower than the homogenizing temperature and higher than 55 ℃, and the upper limit of the second predetermined temperature range is lower than 50 ℃.

Description

Preparation method of skin care moisturizer Technical Field The invention relates to the technical field of skin care moisturizer preparation, in particular to a preparation method of skin care moisturizer. Background The health of the skin barrier is the basis for maintaining the normal physiological function of the skin, achieving effective moisturization and protecting against external environmental aggressions. The physical barrier of the skin is mainly composed of the outermost stratum corneum layer of the skin, where in a "brick wall structure" the keratinocytes (bricks) together with intercellular lipids (mortars) maintain the integrity of the barrier. With aging, environmental stimuli (such as dryness, ultraviolet rays, pollution) and improper care, the synthesis of skin intercellular lipids (especially ceramide, cholesterol, free fatty acids) is reduced, the proportion is unbalanced, the barrier function is damaged, and the percutaneous water loss (TEWL) is aggravated, so that a series of problems such as skin dryness, roughness, sensitivity and the like are caused; With the development of skin science and biotechnology, the skin care concept is being upgraded from basic moisturization to "barrier repair" and "bioactive maintenance". On the one hand, the direct filling and repair of intercellular lipid structures by supplementing the same or similar lipids as the components of the human skin itself, such as ceramides, is a key strategy to repair the barrier. On the other hand, the components with specific biological activities, such as signal peptide (such as decarboxylated carnosine), recombinant collagen, specific plant extracts and the like, are used for promoting the synthesis of self collagen, inhibiting saccharification damage and enhancing the self resistance of skin from the cellular level, so that deeper biological support is provided for moisturizing. However, these highly reactive, highly potent ingredients tend to be sensitive to formulation environment (e.g., temperature, pH, shear force), and are susceptible to deactivation, degradation, or interaction during conventional high temperature emulsification or simple mixing processes, resulting in a significant deterioration of their declared efficacy; Therefore, the development of a novel skin care humectant and a preparation method thereof is needed in the industry, the formulation of the novel skin care humectant needs to synergistically exert multiple effects of instant moisturizing, long-acting repair barrier and deep biological care, and meanwhile, the preparation process of the novel skin care humectant needs to be refined, so that the adding process conditions of different active ingredients can be accurately controlled, and the stability and biological activity of various sensitive ingredients are ensured. Disclosure of Invention The invention aims to solve the defects in the prior art, and provides a preparation method of a skin care humectant. In order to achieve the above purpose, the present invention adopts the following technical scheme: a preparation method of a skin care humectant comprises the following steps: S1, heating an oil phase component to a molten state under a vacuum condition to obtain a homogeneous oil phase; S2, mixing and swelling water phase components containing a high molecular thickener under a heating condition to obtain a homogeneous water phase; s3, mixing the water phase and the oil phase under the vacuum condition, shearing and homogenizing at 70-80 ℃ to form primary emulsion, and then starting to cool; s4, when the system temperature is reduced to a first preset temperature interval, adding a first group of active substances and uniformly dispersing; and S5, when the system temperature is continuously reduced to a second preset temperature interval, adding a second group of active substances, uniformly dispersing, and then adjusting the pH value of the system to 5.5-6.0. As a still further aspect of the present invention, the first predetermined temperature range is 53-58 ℃, the first set of active substances comprises at least ceramide, the second predetermined temperature range is 37-42 ℃, and the second set of active substances comprises at least recombinant collagen. As a still further scheme of the invention, the first group of active substances further comprises a bardry chicory extract, and the second group of active substances further comprises a preservative synergist consisting of decarboxylated carnosine and p-hydroxyacetophenone. As a still further proposal of the invention, in the step S3, the shearing homogenization and the subsequent cooling process are continuously carried out in the same vacuum reaction kettle, the vacuum degree of the vacuum reaction kettle is kept between-0.05 and-0.08 MPa, and the cooling process is realized by circulating a cooling medium through a jacket. As a still further proposal of the invention, in the step S3, the rotation speed of the shearing homogeni