GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B Hair Growth Serum Intense with Copper Peptide GHK Cu GHK Cu Hair Growth Before and After: What to Expect Amino Innovations So excited about this peptide! GHK Cu serum and scalp solution available Fascinating peptide that helps to prevent and reduce fine lines and wrinkles. Applied topically on the scalp for hair growth.