Cellular Glow Copper Peptide GHK Cu Serum for Face GHK Cu Peptide for Skin & Hair Facial Serum & Scalp Solution This is a product I purchased on Amazon, so I want to give it a quick review. *~Dumie GHK CU Facial Serum~* This is a Copper Peptide serum that is working amazingly for 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 Copper Peptides Serum for Face 2% GHK CU & 4% EGF Seraphime