GHK-Cu (Glycyl-L-Histidyl-L-Lysine-Copper) is a naturally occurring copper-binding tripeptide first identified in human plasma. Known for its powerful regenerative and protective properties, GHK-Cu plays a vital role in tissue remodeling, wound healing, and anti-aging processes. Over the past few years, it has gained major attention in both cosmetic and biomedical research due to its unique ability to influence gene expression, promote collagen synthesis, and restore skin vitality.