Anti Aging] "Combining GHK Cu with red light has seen a 70% increase in collagen and a 230% increase in fibroblasts." Study with foundations out of MIT & Harvard. At a dose only required GHK Cu is a copper peptide that plays a role in tissue repair and collagen synthesis. The result: improved texture, firmness, and overall skin quality. What Are the Benefits of Copper Peptide Ghk Cu Powder for High Performance Skincare Brands? Hongda Phytochemistry GHK Cu (copper peptide) is a science backed anti aging compound that supports collagen production, skin regeneration, and overall skin health. Used in both topical serums and subcutaneous