GHK Cu: The Peptide That Supports Healthy Aging GHK Cu (copper peptide) is naturally occurring in the body and plays a role in supporting skin health, collagen production, and tissue repair. As The tripeptide GHKCu complex ameliorates lipopolysaccharideinduced acute lung injury in mice Oncotarget GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum One of my personal favorite peptides: GHK Cu (Copper Peptide) I've been using this one consistently and I absolutely love what it does for skin health, healing, and overall cellular repair. GHK Cu is