Copper Peptide Hair Growth Serum AHK Cu & GHK Cu + Licorice Peptide Labz 2% GHK CU Copper Peptide Serum for Hair Growth and Scalp Care Peptides for Hair Growth: GHK Cu, BPC 157, and GHK Biotin Shed Copper Peptide Hair Growth Serum Take an Rx approach to hair health 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