GHK Cu Epitalon: Skin + Cellular Longevity PeRx Experiencing itching & burning from your GHK CU peptide injections? Try these to hacks: 1. Use a longer syringe to penetrate deeper into the fat cells. 2. Dilute the copper. Here I GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu (Glycyl L Histidyl L Lysine Copper) is a naturally occurring peptide complex that binds copper, an essential trace mineral involved in tissue repair, collagen synthesis, and antioxidant