GHK Cu Topical vs Injection Which is the Better Copper Peptide Form? BPC 157 Peptide Therapy New Results Medical Weight Loss BPC 157 Benefits, Dosage & Before After Results GHK Cu Peptide: What It Does for Body Composition and Metabolic Health 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,