GHK-Cu (glycyl-L-histidyl-L-lysine copper complex) is a naturally occurring copper peptide complex with potent biological activity. In scientific research, it is widely recognized for its ability to promote tissue regeneration by regulating gene expression, thereby repairing damaged tissues and reversing signs of cellular senescence.

As a signaling molecule for extracellular matrix remodeling, this peptide can stimulate the production of glycosaminoglycans and modulate metalloproteinases. In addition, it exhibits remarkable effects in protecting DNA and reducing pro-inflammatory cytokines, making it one of the most versatile compounds studied in regenerative medicine and experimental dermatology.