GHK Cu: What is it and Why You Need It SumaNurica GHK Cu Copper Peptide Skin & Hair Repair The Biohacker 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 Everyone's calling GHK Cu a miracle peptide But let's separate marketing from mechanism. GHK Cu isn't magic. It's a signal. A signal that: Supports tissue repair Modulates inflammation Enhances collagen +