As a functional raw material for whitening cosmetics, whitening agents have received great attention. Its development and application research has been deepened, and new high-efficiency and easy-to-match raw materials have been introduced in the market. Countries have invested a lot of manpower and material resources in the mechanism of skin whitening agents, the development of new whitening agents and the application of whitening agents, and have made significant progress. Many new whitening agents have been applied to products.