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 Can You Use GHK Cu Peptides with Vitamin C Serum? Expert Guide 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 Peptide: Turn Back the Clock Naturally Calibrate Hydration GHK Copper Peptide GHK Cu Tripeptide 1