Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3 Dr. Brenner Labs GHK Cu, the copper peptide, is a game changing injectable for radiant skin and so much more Here's what it can do: Boost collagen for smoother, firmer skin Anti aging Will GHK Cu help with this acne scaring or will subscision be necessary? : r Peptides The Ordinary GHK Cu: Best Copper Peptide Serum Options