GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has Neurogan Health, Copper Peptide GHK CU, 120 mcg, 60 Tablets iHerb GHK Cu: The Powerhouse Copper Complex for Hair and Skin BionwoRx I've tried everything for thin brows and lashes. Serums. Oils. Peptides. You name it. Nothing worked until GHK Cu copper. Copper peptides don't just sit on the surface they actually signal the 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK