Tetrapeptide-37

Tetrapeptide-37: properties, uses, pros, cons, safety Tetrapeptide-37 is a synthetic peptide (tetrapeptide) made of four amino acids linked by peptide bonds. In the context you indicated, it is composed of arginine, aspartic acid, glycine, and serine. In cosmetic formulation it is used as a skin conditioning active, with positioning aimed at...