While GHK Cu may not be a widely recognized compound, its presence and function within the human body are well established. GHK Cu (Copper Peptide) is endogenously produced and plays a role in various physiological GHK Cu may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes GHK Cu: The Elegant Copper Peptide for Skin and Scalp Renewal Renew Vitality In Vitro and in Vivo Studies of pH Sensitive GHK Cu Incorporated Polyaspartic and Polyacrylic Acid Superabsorbent Polymer ACS Omega