What are the potential adverse effects of using GHK Cu (Glycyl Histidyl Lysine Copper) topical peptides for wound healing? Ever heard of GHK Cu peptide? It's a naturally occurring copper peptide that helps repair tissue, stimulate collagen, and support skin healing. When used in injectable form, it works at a deeper level PSA] Albeit rare Copper peptide "uglies" are real and scary. Case report and looking for advices : r SkincareAddiction In Vitro and in Vivo Studies of pH Sensitive GHK Cu Incorporated Polyaspartic and Polyacrylic Acid Superabsorbent Polymer ACS Omega Glow Peptide Protocol GHK Cu, BPC 157, TB 500 Neurogan Health GHK Cu Copper Peptide Regeneration, Skin Renewal & Anti Age