Can You Use GHK Cu Peptides with Vitamin C Serum? Expert Guide Two new treatments, now available Copper Peptide Skin Complex brings prescription grade GHK Cu Acetate to support skin repair and renewal at the cellular level. Lash Growth Serum combines bimatoprost and latanoprost, prescription strength Copper Peptide (GHK Cu) 2% Recovery Serum Advanced GHK Cu Face Cream 2400mg 4% Firmer Skin Neurogan Neurogan Health 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), GHK Cu Cooper Peptide: The Complete Skin & Repair Guide (2026)