Tetrapeptide-11 is the reaction product of Acetic Acid and tetrapeptide-11, containing leucine, proline, and tyrosine residues. It boosts cell growth, Syndecan-1, and Collagen XVII synthesis. Tetrapeptide-11 has a face and body anti-wrinkle and anti-aging
Palmitoyl tetrapeptide-7 is a cosmeceutical peptide that stimulates type I collagen, fibronectin, and hyaluronic acid production in skin.1Formulations containing palmitoyl tetrapeptide-7 have been used in the treatment of photoaging, dark circles, and undereye puffiness. 1.Bucay, V.W., and Day, D.Adjunctive skin care of the brow and periorbital regionClin. Plast. Surg.40(1)225-236(2013)