Proposed acidic degradation pathway of GHKCu in acidic solution. Download Scientific Diagram 7 days on GHK Cu. Here's my honest update. I'm not going to hype this up because the real results don't even start until week 46. But something is already happening. GHK Cu Copper Peptide Therapy Meet the peptide that dermatologists and longevity experts are obsessed with: Glycyl L Histidyl L Lysine Copper Peptide, What it does:, Smooths fine lines, Boosts collagen + elastin, Evens tone GHK Cu Peptides Collective