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 GHK Cu is a powerful copper peptide that supports collagen production, skin and hair health, and tissue repair. It may help reduce fine lines, improve elasticity, and promote faster healing. Want to learn The Peptide Plastic Surgeon: A Review of Evidence on Regenerative Peptide Supplementation and Potential in Aesthetic Plastic Sur Self Assembled Peptide Gold Nanoparticle 1D Nanohybrids Functionalized with GHK Tripeptide for Enhanced Wound Healing and Photothermal Therapy ACS Applied Materials & Interfaces