Your GHK Cu Cheat Sheet. Thinking about making the switch to Copper Peptides but have a few lingering questions? We've got you. The #superPeptide isn't just another serum it's a biological GHK Cu Copper Peptide for Research GhostLabz GHK CU 50mg OP Labs (Formerly Oxford Peptides) Compounded GHK Cu Nasal Spray Restorative Compounding Pharmacy + Wellness GHK Cu (Copper Peptide) Cream 30gm Valhalla Vitality GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B