Glycerin is the basic raw material in cosmetics and has a wide range of uses. In skin care products, glycerin protects, moistens and softens the skin, ensuring that it is properly nourished and moisturized. In addition, glycerin also plays an important role in hair products, such as styling and hairdressing. Despite the existence of glycerin substitutes, its moisturizing effect is relatively moderate, but glycerin is still the preferred raw material in the cosmetics industry because of its excellent moisturizing properties.