The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline Role of IGF 1 in the Growth Hormone IGF Axis 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 Protective effects of GHK Cu in bleomycin induced pulmonary fibrosis via anti oxidative stress and anti inflammation pathways ScienceDirect PSA: Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r 30PlusSkinCare