Set Hairgenetix Set GHK Cu Copper Peptide Scalp Therapy Small molecules. Powerful results. Experience Peptide Power with Hairgenetix's advanced Copper Peptide Hair Growth Serum, formulated with 10% GHK Cu and 5% AHK Cu to support hair health at the follicle level. Helps Copper Peptide Hair Growth Treatment GHK cu, AHK cu, Licorice Root Extract, Ginseng Root Extact Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum