GHK Cu Copper Peptide Benefits, Uses & Safety Intra V 2 weeks in on GHK Cu and the glow is REAL. Brighter complexion More even skin tone Less breakouts Softer fine lines Thicker, fuller hair This is just GHKCU Skin Transformation Results After 4 Weeks 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 Copper Peptides Before and After: Visible Skin Improvements Explained Hubmed