Pls be warned that I don't use peptides from this seller. I don't think this @amos jamieson anneq can be trusted I only get GHK CU from Body Mechanic Active Therapy The Huberman Effect STANFORD magazine 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 GHK Cu LVLUP Health