GHK Cu Cooper Peptide: The Complete Skin & Repair Guide (2026) Squalane + Copper Peptide (GHK Cu) Rapid Plumping Serum 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 GHK Cu is a copper peptide used in regenerative medicine to support collagen production, tissue repair, and cellular renewal throughout the body. It's for individuals looking to improve skin firmness, brightness, and visible What Is GHK Cu? Peptide Research By Bluewell Peptides