Ectoin, is an cyclic amino acid derivative obtained through Freda’s specialized fermentation technology. As an important substance for microorganism to survive in extreme environments, ectoin can effectively bind the surrounding water molecules and form a protective layer on the surface of cell membrane, to fully protect intracellular substance from UV light and high temperature etc. Ectoin has remarkable moisturizing, soothing and repairing effects, and is widely used in various cosmetic formulations.