Hair Restoration Serum Advanced GHK Cu Copper Peptide Formula Maneup Good skin starts with the right ingredients. We made the GHK Cu Peptide Serum for people who want real results without the clinical experience. Copper peptides, hyaluronic acid, niacinamide and more, in one Copper Peptide Hair Growth Serum 10% GHK Cu & 5% AHK Cu Hairgenetix Hair Restoration Serum Advanced GHK Cu Copper Peptide Formula Maneup Copper Peptide Hair Growth Serum AHK Cu & GHK Cu + Licorice Peptide Labz