The basic structure of Sodium polyglutamate (PGA) consists of D- and L-glutamic acid monomers which are connected by amid linkages between α-amino and γ-carboxyl groups.

Ectoin, is an Cyclic amino acid derivate developed by Freda’s fermentation technology.

Pullulan is a polymer biological polysaccharide produced by microbial fermentation. It has good film forming property, and its aqueous solution has good adhesion and foam stability, which make it widely used in various cosmetic products for skin care, hair care, makeup and facial cleaning etc.