Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3000 GHK Cu, commonly known as copper peptides, are found naturally within the human body where they play a vital role in skin repair and maintenance. Copper peptides support optimal skin function by helping What is GHK Cu Collagen and Elastin Support Neurogan Health 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