GHK Cu is one of my personal favorites for a lot of reasons, but I can say without a doubt that it's use effectively stopped and reversed, my receiving hairline. However, there are GHK Cu Copper Peptide: The Ultimate Peptide For Longevity GHK Cu Peptide: What It Does for Body Composition and Metabolic Health Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum Biossance More than hair its cellular support , GHK CU is a well studied copper peptide known for its role in supporting:, Healthier looking hair & scalp environment, Hair that appears thicker,