Ghk Cu Tolerance Desensitization Effectiveness Loss The tripeptide GHKCu complex ameliorates lipopolysaccharideinduced acute lung injury in mice Oncotarget Copper peptides support skin repair, barrier recovery, and firmness signalling. But GHKCu is different not all copper peptides behave the same. A new 3% GHK Cu option from MySeries makes Copper peptides explained what are the differences between copper peptides and GHK CU peptides? What they actually do for the skin in terms of repair and collagen, and what you can and cant mix