GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has GHK Cu HGH & Peptides Deus Medical GHK Cu Copper Peptide Face Tonic (30 mL) Reduces Appearance of Fine Lines Supports Skin Firmness Copper Peptides (GHK Cu): What They Are, How They Work, and What Evidence Really Shows VIDA Integrative Medicine