Unlike core peptides, KPV's effects are not mediated through MC-Rs, suggesting alternative pathways such as IL-1 inhibition
A topical copper peptide serum concentrates the active complex at the tissue where its collagen-stimulating and anti-inflammatory effects are most relevant
They are also generally less expensive than injections, which may be the ultimate determining factor for some people
Additinally, I didnt plan to watch a video learning about the incredible array of benefits from GHK-Cu, but the YT vid you posted with Dr Quinn Stillson, breaking down the physiology, current levels of research, efficacy, risks and benefits of topical vs sub -cu, was simply phenomenal
Morrison, M., et al
Juvale K, Shaik A, Kirubakaran S (2019) Inhibitors of inosine 5-monophosphate dehydrogenase as emerging new generation antimicrobial agents