VIP: A Peptide With Many Jobs

VIP is a true multi-tasker — it dilates blood vessels, relaxes smooth muscle, and modulates immune function, acting through VPAC receptors found across the body. Its skin research interest comes from that vasodilatory effect on skin blood flow.

Because it acts so broadly, VIP is a complex research target; effects in one system can't be isolated from others. That breadth is both the fascination and the limitation — you can't easily 'use it for skin' without affecting vasculature, bronchi, gut, and immunity. Members discuss it mainly to understand neuropeptide signaling rather than as a focused cosmetic agent, and the thread below covers why broad-acting peptides are a different research conversation than targeted ones.