Copper Peptide Skincare Routine: How to Layer Peptides Glimmer Goddess Injectable GHK Cu: Beginner's Guide to Copper Peptide GHK Cu Peptide Benefits for Skin and Hair LIVV Natural I ran GHK Cu for 12 months so you dont have to (here are the results) AHK Cu + GHK Cu Hair Serum Pro 4800mg Hair Growth Neurogan Neurogan 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