Hair Growth Serum Intense with Copper Peptide GHK Cu Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum GHK Cu Focal Point Vitality Male Hair Restoration Before & After with PRF and 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 Peptide Serum for Hair Growth and Scalp Care Seraphime