Copper Peptide Hair Growth Serum 10% GHK Cu & 5% AHK Cu Hairgenetix 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 Shed Copper Peptide Hair Growth Serum Take an Rx approach to hair health Copper Peptide Hair Growth Treatment GHK cu, AHK cu, Licorice Root Extract, Ginseng Root Extact Behind healthier hair is usually a mix of care and consistency. Mayraki Hair Growth Serum Intense with Copper Peptide GHK Cu combines copper peptide to help reduce hair fall with nourishing oils GHK Cu Copper Peptide Hair Tonic for Fuller Looking Hair 12 Week Supply (30 mL)