GHK Cu Peptide Benefits (And a Few Risks) Explained How long will a 50 mg supply of GHKCu last when dosing 2 mg daily for five consecutive days followed by two days off each week? GHK Cu Peptide for Hair Growth: Science, Benefits, and How It Works What are the dosing regimens and potential side effects of GHK Cu (Glycyl Histidyl Lysine Copper) peptides in various conditions, including wound healing and neurodegenerative diseases? Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3000