Copper Peptide (GHK Cu) 2% Recovery Serum 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 GHK Cu Peptide Before and After Results Medically Guided Skin Treatment Rumen Australia Cellular Glow Copper Peptide GHK Cu Serum for Face 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