What is GHK Cu? GHK Cu (glycyl L histidyl L lysine copper complex) is a naturally occurring peptide in human plasma that: Binds copper ions Acts as a biological signalling molecule Plays a role GHK Cu 50mg Copper Peptide Research Grade Midwest Peptide GHK Cu is a naturally occurring copper binding peptide that plays a major role in tissue repair and remodeling, with a strong focus in research on skin and hair biology. It works by signaling Buy GHK Cu 50mg 99% Purity Made in USA Peptide Peptide Therapy Overland Park, Lee's Summit & Telehealth GHK Cu + SNAP 8 Peptide Duo Best Anti Aging Peptide Skincare Set