Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3000 Skin Restoration: Prioritizing Safety Over Trends The Benefits & Risks of GHK Cu (WATCH BEFORE TAKING) FDA Review Moves Peptides From Gray Market to Mainstream Fitt Insider 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