GHK Cu (10 mg, 50 mg, 100 mg) COA verified peptide Nootropix Liposomal GHK Cu by Quicksilver Scientific Amazon.com: QUBIT GHK Cu Copper Peptide Supplement for Skin & Hair, Easy to Absorb, Precisely Dosed 90 Vegan Capsules : Health & Household GHK CU Copper Peptide Recovery Peptide Suppstance Most people think GHK Cu works because it's a skin peptide. That's surface level thinking. #GHK Cu doesn't start with wrinkles, scars, or hairlines. It starts with cellular repair signalling. GHK Cu is a copper peptide