GHK-Cu is a naturally occurring copper-binding tripeptide found in human plasma, saliva, and urine. It acts as a multifunctional regulator with antioxidant, anti-inflammatory, and tissue repairing properties. By interacting with cellular receptors and modulating key biological pathways, GHK-Cu has shown potential in supporting collagen synthesis, improving skin elasticity, promoting wound healing, and aiding in overall tissue regeneration.