Acetyl Tetrapeptide-11 is the reaction product of Acetic Acid and tetrapeptide-11, containing leucine, proline and tyrosine residues. It promotes the cell growth, Syndecan-1 and Collagen XVII synthesis. More information please visit the website: https://www.creative-peptides.com/product/acetyl-tetrapeptide-item-cpc1621-133.html