GHK Cu vs AHK Cu: A Scientific Comparison of These Peptides Peptide Tech The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline This peptide reverses aging, And its been hiding in plain sight for decades., GHK Cu (Copper Peptide) is one of the most researched anti aging ingredients out there., Heres what it does:, 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 a growing body of peer