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 Copper Peptide GHK Cu Tripeptide 1 Glow Peptide Protocol GHK Cu, BPC 157, TB 500 Neurogan Health GHK Cu Copper Peptide: Dosage, Before and After Results, and How It Works Perfect B GHK Cu Peptide: Hair Regrowth for Thinning & Alopecia