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 One of my patients has shared this picture with me as she felt it was odd that this peptide had this very vivid blue colour, while her other peptides had a clear China Factory Wholesale Price Peptide Pen Reusable Pen Peptide Vial GHK Cu Peptide Powder GHK CU 50MG, PEN peptidetechuae.com Blog Our Updates Peptide Pens: BPC 157, TB500, GHK Cu & More Nugenyx