GHK Cu Peptides Serum TryDeloura Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia Copper Peptide Regenerating Serum Booster 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),