Copper Peptide Regenerating Serum for Glowing Skin and Hair Reveal Radiant, Youthful Skin with Daily Firming Serum* Turn back the clock with our luxurious Daily Firming Serum! Infused with potent botanical extracts and rejuvenating peptides like GHK Cu, this serum 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 PURE GHK Cu 50mg (3 PEPTID MEDI) 99.8% Purity eBay