Almost 4 months on GHK Cu hair growth progress : r tressless Neurogan Health, GHK Cu Copper Peptide, Hair & Scalp Serum 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 R 10% Ghk Cu + 5% Ahk Cu Copper Peptide Hair Density Serum NOLUVA Copper Peptide Hair Regrowth Serum GHK Cu & AHK Cu 30ml British Harmonia Natural Makeup & Fragrance by British Harmonia UK