Bounce Back Better with Peptides for Injury Recovery Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms Thermodynamically stable ionic liquid microemulsions pioneer pathways for topical delivery and peptide application ScienceDirect Uses and Benefits #ghk GHK Cu is a naturally occurring peptide in human plasma that declines with age. When used in injections (usually subcutaneous), it can offer various benefits: Skin Rejuvenation and Anti Aging: