Page 1 Reviews Neurogan Health, Copper Peptide GHK CU, 120 mcg, 60 Tablets, 0.52 oz (15 g) iHerb Hair Growth Serum Intense with Copper Peptide GHK Cu African Goddess Peptide Revival Serum with GHK Cu Copper Peptide, Fo T Elite Hair Care USA Copper Peptides Elmhurst IL Chicago Accelerated Aesthetics 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),