Treating Skin With Azelaic Acid: Before And After SkinLab GHK Cu Repairing Serum 30ml SumaNurica 11 BEFORE & AFTER ideas copper peptides, crepey skin, eyebrow lift GHK Cu Peptide: What It Does for Body Composition and Metabolic Health 12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK This is my third cycle on GHK Cu., My hair is growing. My nails are strong. My skin has improved. , And now Im focusing on those acne scars from my younger days., And honestly? Theyre starting to go