Copper Peptides Serum for Face 2% GHK CU & 4% EGF Seraphime 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 Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu Peptide Benefits (And a Few Risks) Explained GHK Cu Copper Peptide Injections: Advanced Skin Rejuvenation GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy