Small molecules. Powerful results. Experience Peptide Power with Hairgenetix's advanced Copper Peptide Hair Growth Serum, formulated with 10% GHK Cu and 5% AHK Cu to support hair health at the follicle level. Helps GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu Peptide: Turn Back the Clock Naturally Calibrate Hydration How to Use GHK Cu Peptide for Hair and Skin: Best Practices for Anti Aging & Hair Regrowth Copper Peptide Hair Growth Serum for Hair Loss & Thinning Hair Feline Skinscience