Two Ingredients. Real Hair Transformations. How Neurogan Health's GHK Cu Serum Is Changing What Customers Expect From Hair Care GHK Peptide Hair Growth Clinical Trial (2016) Research Summary Hairgenetix 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 a growing body of peer GHK Cu Copper Peptide Scalp Therapy Peptide Therapy for Hair Growth: Explore Your Options Buy GHK Cu Exceptional 99%+ Purity Third Party COA Included