Dynamic Performance GHK Cu 50mg Peptide Peak Body GHK Cu Peptides Collective 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 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.