Copper peptide questions we get asked all the time , How often should you use it? Do you need to avoid the sun?, If youre new, start once daily (evenings are great), then build up if your skins Peptual FirmRestore 3% GHK Cu Serum Aestha Clinic Oral Liposomal Copper GHK Liposomal GHK Cu Supplement GHK Cu Copper Peptide Cream (Prescription) UluRx Amazon.com: GHK Cu Copper Peptides Serum for Face: Advanced Anti Aging Serum with Multi Peptide and Niacinamide for Fine Lines and Skin Elasticity : Beauty & Personal Care GHK Cu (Copper Peptide) LeadWest Medical