GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Expression and Purification of Recombinant GHK Tripeptides Are Able to Protect against Acute Cardiotoxicity from Exposure to Waterborne Copper in Zebrafish 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: The Peptide That Transforms Skin and Tissue Health Calibrate Hydration The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline