A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend GHK Cu: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration Reducing Redness & Inflammation with GHK Cu Copper Peptides Vitali Skincare GHK Cu: My secret weapon for skin, hair, and healing, I use it two ways topical cream for my face, and subQ injections 3x a week., It boosts collagen, tightens skin, helps hair grow, and even