Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms OBM Geriatrics The Effect of the Human Plasma Molecule GHK Cu on Stem Cell Actions and Expression of Relevant Genes GHK Cu (Copper Peptide) isn't just another trend. It's a naturally occurring peptide in our bodies that plays a vital role in healing, collagen production, skin regeneration, and even hair support. Here's all The Effect of the Human Peptide GHK on Gene Expression Relevant to Nervous System Function and Cognitive Decline