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 MOST EFFECTIVE Scalp Serum Hair Growth Factor 5% GHK CU Copper Peptide Rosemary Male Hair Restoration Before & After with PRF and GHK Cu Copper Tripeptide For Thinning Hair Regrow Serum Essence Oil DHT Blo Collagen Tripeptides