High nutritional cosmetics must have anti microbial substances. Cosmetic preservatives are generally "substances added to cosmetics for the purpose of inhibiting the growth of microorganisms in cosmetics". Its function is to prevent the deterioration of cosmetics in production, use and shelf life, which will damage the health of consumers. At the same time, the prevention of secondary pollution mainly depends on preservatives.

Although the selection of industrial preservatives is not as complicated as that of daily chemical preservatives, not all industrial preservatives are common. Preservative manufacturers let everyone know what industrial preservatives are and what products they are suitable for through the characteristics and application fields of preservatives.