GHK-Cu is a naturally occurring copper-binding tripeptide composed of glycine–histidine–lysine (GHK) bound with a copper ion (Cu²⁺). It is present in human plasma, saliva, urine, and blood, and plays a fundamental role in tissue regeneration, skin repair, hair follicle health, and cellular repair signaling.
Rather than acting as a hormone or growth factor, GHK-Cu functions as a genetic and biochemical modulator, influencing how cells repair, renew, and protect themselves.
















