Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms Effects of Copper Tripeptide on the Growth and Expression of Growth Factors by Normal and Irradiated Fibroblasts Jeffrey D. Pollard, Susan Quan, Thomas Kang, R. James Koch, 2005 Let's talk about a peptide that actually changes how skin and hair heal GHK Cu. GHK Cu (Copper Tripeptide 1) is a naturally occurring peptide that signals skin and hair cells to heal, regenerate, Nanoengineered Self Assembling Peptides with Increased Proteolytic Stability Promote Wound Healing ACS Applied Materials & Interfaces Biological aspects in controlling angiogenesis: current progress Cellular and Molecular Life Sciences Springer Nature Link