3M Cavilon - No Sting Barrier Film is a no sting barrier film that comes in either a spray bottle or in sterile wipe packages. This barrier film dries quickly to form a breathable, transparent coating on the skin. 3M Cavilon skin prep is designed to protect intact, damaged, or 'at-risk' skin from body fluids, adhesive trauma, stoma sites, and friction. Waterproof. Protects up to 72 hours.