You're getting a multiplicative, synergistic cascade (1+1=3, or even 4)
Glutathione is, in fact, one of the most powerful antioxidants in our body and thats why it is known as the master antioxidant
The deepest body of mechanistic work on GHK-Cu has come from Loren Pickart and collaborators, who have published extensively on its biology across more than four decades (Pickart et al., 2015) In preclinical research, GHK-Cu has been associated with effects on collagen and glycosaminoglycan synthesis in dermal fibroblast models, on hair-follicle morphology in rodent and ex-vivo skin studies, and on expression of genes involved in tissue remodeling
This enzyme catalyzes the dismutation of superoxide anion radical very effectively by a Ping Pong mechanism with remarkably high reaction rates according to the reaction (Zelko et al
Cleasby A, Yon J, Day PJ, Richardson C, Tickle IJ, Williams PA, et al