GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? GHK CU 50 mg Superior Chains Research Labs What if your body already had a molecule designed for repair? GHK Cu is a copper peptide involved in skin regeneration, healing, and overall cellular health. For more trusted advice on peptides from GHK Cu HGH & Peptides Deus Medical GHK CU 50mg Transparent Peptides GHK CU Copper Peptide 50MG LC MS Tested For Research Only