Advanced GHK CU + AHK CU Peptide Hair Growth Serum 30ml Azur Skin Hair Growth Serum Intense with Copper Peptide GHK Cu 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 2% GHK CU Copper Tripeptide Hair Regrowth Mercari Copper Peptide Hair Growth Treatment GHK cu, AHK cu, Licorice Root Extract, Ginseng Root Extact