Copper Peptide (GHK Cu) 2% Recovery Serum GHK Cu (Copper Peptide) Provider Supervised Therapy IV Glow Bar GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? Give it like 6 8 weeks to see results. And without the painful side effects GHK Cu, the copper peptide, is a game changing injectable for radiant skin and so much more, , , Heres what it can do:, Boost collagen for smoother, firmer skin, Anti aging improves fine