GHK Cu Copper Peptide Scalp Therapy Advanced GHK CU + AHK CU Peptide Hair Growth Serum 30ml Azur Skin 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 Private Label Ghk Cu Serum Copper Peptide Hair Growth Copper Peptide Serum for Hair Growth Peptide