OEM ODM 5% GHK Cu Peptides Serum for Daily Hair Growth & Repair Cruelty Free, Nourishing Hair Oil for Professional Use Has anyone tried aGHK CU serum for hair? It's a copper peptide based serum for hair. : r FemaleHairLoss AHK Cu Hair Elixir 4800mg 99% Hair Growth & Scalp Care Neurogan 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 GHK and AHK copper peptide topical serum tutorial This gives a roughly 3% concentration of both peptides. Great for any hair + skin protocol Comment and let me know if you AHK Cu vs GHK Cu Difference Between GHK Cu and AHK Cu