AHK Cu + GHK Cu Hair Serum Pro 4800mg Hair Growth Neurogan Neurogan Health Injectable GHK Cu: Beginner's Guide to Copper Peptide GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Copper Peptide Hair Growth Conditioner GHK Cu for Hair Loss Hairgenetix GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes 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