GHK Cu (Copper Peptide) Deep Dive: Mechanisms, Benefits, Risks, Forms, & Dosing GHK Cu (copper peptide) is actually something your body already makes when youre younger which is great, until it slowly starts disappearing., It basically tells your body to repair itself better. A Dermatologist's Take on the Copper Peptide (GHK Cu) Trend PDF] Regenerative and Protective Actions of the GHK Cu Peptide in the Light of the New Gene Data Semantic Scholar