GHK CU Copper Peptide, Hair & Scalp Serum, 2 oz (60 ml) 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 BPC 157 Benefits: What It Does for Gut, Joints, Muscle, and Recovery Peptides in Orthopedics: BPC 157 What Patients Should Know About Safety, Efficacy, and Sourcing The Centers for Advanced Orthopaedics: Maryland Orthopedic Specialists Division