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 Organic Copper Peptide GHK Cu Anti Aging Moisturizer Lightweight Hydrating Cream Melatonin Hair Growth Serum GHK cu Stem Cells Scalp Hair Growth Serum STEMBOTANY GHK Cu Skin Cream Proven Collagen & Anti Aging, $279