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, PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction Cellular Glow Copper Peptide GHK Cu Serum for Face GHK Cu (Copper Peptide) Provider Supervised Therapy IV Glow Bar