Copper Peptide Serum (GHK Cu) Nardo's Natural Private Label Am+Pm 5% B5+GHK Cu Hydrating Serum Meet the ingredient your skin has been waiting for. GHK Cu, or Copper Tripeptide 1, is one of the most researched anti ageing actives in skincare. It firms. It renews. It supports collagen. And now Good skin starts with the right ingredients. We made the GHK Cu Peptide Serum for people who want real results without the clinical experience. Copper peptides, hyaluronic acid, niacinamide and more, in one Copper Peptide Skincare Routine: How to Layer Peptides Glimmer Goddess GHK Cu Copper Peptide Skincare Bundle RegenMed Direct