Moisturizers occupy an extremely important position in cosmetic raw materials. First, the quality of cosmetics depends on the moisturizer. Second, one of the basic substances that make up cosmetics is moisturizer, which is essential in all cosmetic formulas. Moisturizers exert moisturizing and moisturizing effects by retaining and absorbing water, and can effectively restore skin elasticity.
1. Regarding the types of moisturizers:
Instructions for supplying fatty alcohols: according to the moisturizing properties of the moisturizers Based on the mechanism of efficacy, we can divide moisturizers into oily substances and hydrophilic substances. In actual life applications, if only one moisturizer is used, the moisturizing effect is not significant. Therefore, if you want to achieve the moisturizing effect through various methods such as sealing moisture, moisturizing, and absorbing moisture, you must use a variety of moisturizers.
Oily substances: Oily substances can achieve moisturizing effect, and the stratum corneum can obtain moisture through the underlying tissues. Oily substances can lock in moisture, reduce or prevent the loss of moisture in the stratum corneum, and ultimately reduce the evaporation of moisture in the skin. Applying oily substances to the skin can form a continuous oil film. Representative oily substances include petroleum jelly, lanolin, stearyl alcohol, etc.
2. Commonly used water-soluble moisturizers:
(1) Xylitol:
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Xylitol is a natural moisturizer, a mild moisturizer, and a slightly sweet white crystal. It is used in cosmetics to make cosmetics have good moisturizing and moisturizing effects. It is often used in cold creams, snow creams, Moisturizer etc.
(2) Sorbitol:
Sorbitol is the most commonly used cosmetic moisturizer, and its hygroscopicity is less than that of glycerin. It can improve the cold resistance stability of the product, has excellent anti-freeze properties, can exert its moisturizing properties under low temperature conditions, and the moisturizing effect is very gentle. Seventy-five percent sorbitol aqueous solution is commonly used in cosmetics. Sorbitol is very suitable as a humectant in baby products or toothpaste because it is non-irritating to the skin and oral mucosa.
(3) Butylene glycol:
Butylene glycol is a colorless and transparent viscous liquid that is often used in cosmetics such as bath soaps and shampoos. It has good antibacterial properties. effect and excellent moisturizing properties.
(4) Propylene glycol
Propylene glycol is a colorless, transparent and viscous liquid with a slightly special taste, odorless and lower viscosity than glycerin. It can be used in hair dyes and foam baths. Among various skin care cosmetics such as conditioners and shampoos, it has long-lasting moisturizing effect, low stickiness, refreshing and mild moisturizing properties.
(5) Glycerin
The most commonly used and earliest moisturizing agent in cosmetics is glycerin, a sweet, odorless, transparent and colorless viscous liquid, also known as glycerin. triol. Glycerin has a significant moisturizing effect on human hair and skin, and has good moisturizing and moisture-absorbing effects. Adding glycerin to cosmetics can increase the solubility of the components. The application of glycerin in various cosmetics can improve the feeling of use, maintain skin health, regulate skin physiological functions, and replenish the skin’s stratum corneum with required moisture. It should be noted that too high a concentration of glycerin will absorb moisture from the skin and cause the skin to feel burning.
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