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 GHK Cu scalp solution for healthier hair GHK Cu Hair & Scalp Serum 2400mg 4% Less Shedding Neurogan Neurogan Health Neurogan + Health GHK CU Copper Peptide Hair and Scalp Serum PrettyStick Copper Peptide Hair Growth Serum Stimulate & Prevent Loss AHK CU + GHK CU Hair Serum Pro