Copper Peptide Serum with 1% GHK Cu peptide, Argireline and Matrixyl 3000 Before vs. after 3 months of GHK Cu peptide therapy smoother texture, more even tone, and skin that looks healthier overall. Small peptide, big difference Skincare Routine: GHK Cu Peptide & Tretinoin PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction Neurogan Health, copper peptide GHK CU, 120 mcg, 60 tablets iHerb