GHK Cu G Lab Peptides GHK Cu True Lab Peptides Curious about GHK Cu? This powerful peptide is known for its skin rejuvenating properties and is often called a "youth molecule". GHKCU helps promote collagen production, improve skin elasticity, reduces fine lines and 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 Copper peptide GHK Cu Wikipedia