GHK Copper Peptide GHK Cu Tripeptide 1 The research on GHK Cu goes back over 40 years a scientist dedicated his entire career to it. Your body already makes it. You just make about 60% less of it by GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu Peptide: Turn Back the Clock Naturally Calibrate Hydration 7% GHK CU ACCELERANT Platinum Skin Care