There are many kinds of raw materials and different properties of cosmetics. According to the raw material properties and uses of cosmetics, it can be divided into two categories: base raw materials and auxiliary raw materials. The former is a kind of main raw material of cosmetics, occupies a large proportion in the formula of cosmetics, and is a substance that plays a main function in cosmetics. The latter is responsible for the formation, stabilization or color, aroma and other properties of cosmetics, which are used in small amounts in cosmetic formulations, but are extremely important. Cosmetics are natural, synthetic or extracted substances with different functions as raw materials, and processed by heating, stirring and emulsifying production procedures