Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms Frontiers Exploring the beneficial effects of GHK Cu on an experimental model of colitis and the underlying mechanisms 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: Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with GHK CU (a copper peptide) is naturally found in the human body and is studied for its involvement in skin integrity, tissue repair signaling, and cellular regeneration. Research commonly explores its relationship to: