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 GHK CU, Peptdeo de Cobre, 300mcg, 120 Cpsulas, Ewcxine Vitaminas Brasil Amazon.com: Neurogan GHK Cu (Copper Peptide) Neck & Face Serum 1,200mcg (1 oz bottle) : Beauty & Personal Care Peptides are the hottest word in wellness right now, so naturally I had to dive in!, The peptide stack I am trialing is GHK CU (hair, skin & nails) and Glutathione (neutralizes free radicals, reduces GHK Cu 50 MG US Precision Health GHK Copper Peptide GHK Cu Tripeptide 1