GHK Cu vs NAD+: Which Longevity Peptide Should You Take or Stack? Close up of Blue Copper Peptides GHK Cu in Pipette. Beauty serum for anti aging beauty routine Stock Photo Alamy Same GHK Cu. Better way. Same GHK Cu copper peptide complex. Completely different experience. If you've been eyeing the pen, put it down. We made something better, and your skin barrier will thank you Unlock Your Beauty : Introducing GHK Cu Are you ready to optimize your body from the core? Explore the incredible benefits of GHK Cu, the pure copper peptide that's changing the game