GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? Selected Biomarkers Revealed Potential Skin Toxicity Caused by Certain Copper Compounds Scientific Reports GHK Cu vs AHK Cu: Which Copper Peptide Is More Effective? Expression and Purification of Recombinant GHK Tripeptides Are Able to Protect against Acute Cardiotoxicity from Exposure to Waterborne Copper in Zebrafish Dimeric copper peptide incorporated hydrogel for promoting diabetic wound healing Nature Communications GHK Cu is getting a lot of attention right now, and for good reason. This is not just a skin peptide. It's a copper binding tripeptide with documented effects on gene expression, collagen synthesis,