Copper Peptides for Skin: What GHK Cu Does and How It Compares to Retinol GHK Cu Injectable Team Wellcore GHKCu Copper Peptide Therapy Skin & Healing Regeneration The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline 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