GHK CU Drift Peptides Copper Peptide Regenerating Serum for Glowing Skin and Hair Scared of needles? What science says about peptide nasal sprays GENESIS GHK CU COPPER PEPTIDE + NAC NASAL SPRAY M&M Fitness Australia Have you heard of the peptide GHK Cu?, GHK Cu is one of the most promising peptides for improving skin health. It can promote collagen production, which is essential for skin elasticity and firmness. GHK Cu Topical Spray Wells Pharmacy Network