Cosmetics is a compound mixture made of various raw materials through reasonable blending and processing. Cosmetics have a wide variety of raw materials and different properties. According to the properties and uses of raw materials, cosmetics can be divided into two categories: matrix raw materials and auxiliary raw materials. The former is a kind of main raw material of cosmetics, which accounts for a large proportion in the formula of cosmetics and plays a major role in cosmetics. The latter plays a role in shaping, stabilizing or imparting color, fragrance and other characteristics to cosmetics. These substances are not used in cosmetics formulas, but they are extremely important. Cosmetics is a kind of chemical mixture made of natural, synthetic or extracted substances with different functions as raw materials and processed through production procedures such as heating, stirring and emulsification.