AHK Cu Research Grade Peptide COA Verified Peptide Warehouse Buy AHK Cu AHK Cu: what kind of peptide it is, properties, features, and use in cosmetics Copper Peptide AHK Cu Scalp Serum IWG 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 AHK Cu vs GHK Cu : Benefits and Applications