Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum GHK Cu Copper Peptide Hair Tonic for Fuller Looking Hair 12 Week Supply (30 mL) 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Wholesale AHK CU + GHK CU Hair Serum Pro for your store Faire 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