GHK Cu is a naturally occurring copper binding peptide that plays a major role in tissue repair and remodeling, with a strong focus in research on skin and hair biology. It works by signaling GHK Cu Peptide: What It Does for Body Composition and Metabolic Health GHK Cu Copper Peptide: The Ultimate Peptide For Longevity ReMed HydraPen (GHK Cu) Blue Copper Peptide Serum 2 x 5 ml Microneedling MorySkin GHK CU Program Calibrate Hydration