GHK Cu before and after : r Biohackers GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B 2 weeks in on GHK Cu and the glow is REAL. Brighter complexion More even skin tone Less breakouts Softer fine lines Thicker, fuller hair This is just Copper Peptides Serum for Face 2% Copper Peptide with 4% Epidermal Growth Factor (EGF Serum) Niacinamide Ceramides Squalane & Hyaluronic Acid Multi GHK Cu 50mg Copper Peptide Research Grade Midwest Peptide