Let's talk about one of my FAVORITE glow peptides: GHK Cu GHK Cu (Copper Peptide) is a naturally occurring peptide in your body that plays a HUGE role in healing, repair, and overall Glow skin regeneration blend with GHK Cu, BPC 157, and TB500 New on the Market Unlock radiant, youthful skin with the Skin Glow Peptide Pen the skincare revolution your routine has been waiting for! Powered by GHK CU, this prefilled GHK Copper Peptide GHK Cu Tripeptide 1