Let's talk peptides next up: GHK Cu GHK Cu is a copper peptide known for its role in skin health, healing, and overall rejuvenation. Naturally found in the body, it helps support Uncover the Power of GHK Cu peptide FIT9 GHK Cu Peptide Regenerative & Cosmetic Research GHK Cu is one of the most talked about peptides in aesthetics right now. But how much of what you have heard about it is actually true? Copper peptide, known as GHK Cu, has GHK Cu Peptide Therapy: The Definitive Clinical Guide to Gene Modulation, Protocols, and Efficacy Rigid flexible nanocarriers loaded with active peptides for antioxidant and anti inflammatory applications in skin ScienceDirect