Copper Peptide Regenerating Serum for Glowing Skin and Hair GHK cu Copper Peptide: The "Glow" for Hair & Skin Seenergie PH AHK Cu (Copper Tripeptide 3) Ingredient Guide Nubeean Noosa Healthy skin works best when it's supported on every level.interested? Please Read GHK Cu main ingredient It's a copper peptide your body naturally produces when you're young. It plays a key role in Peptide GHK CU Cream Concierge MD