GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu Face Serum 1200MG Copper Peptide Tablets GHK Cu Copper Peptide Neck & Face Serum Copper peptide questions we get asked all the time How often should you use it? Do you need to avoid the sun? If you're new, start once daily (evenings are great), Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3000