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 GHK Cu Copper Peptide 50mg Cypress Compound Co Rejuvenation and Youth with GHK Cu Peptide Treatment Dr. Ahmet zyigit 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