Peptides take off as a DIY treatment but is that a good idea? : NPR You started using a GHK Cu peptide serum on your face and now , The things no one tells you., Yes, the injections can hurt like a bitch. , Heres the thing Ive found it works even better topically, The Wolverine Drug Ortho Rhode Island GHK Cu before and after : r Biohackers Peptides for Plastic Surgery Recovery: A Clinical Guide to GLOW, KLOW, and NAD Plus Frank Agullo, MD