If you think GHK Cu is just an expensive skin cream, we need to talk. The truth that 99% of people, and even many doctors, overlook is that this copper peptide is Fitish Most people don't know GHK Cu by name. Their face does. It's the peptide your body uses to signal collagen production, repair tissue, Instagram What are GHK cu (Glycyl Histidyl Lysine Copper) injections? GHK CU Copper Peptide, Hair & Scalp Serum, 2 oz (60 ml)