3M Cavilon No Sting Barrier Film Spray #3346 (28ml) Lot Of 3 Exp 2028/2029. 3 Bottles (spray) Ref 3346 3M Cavilon No Sting Barrier Spray 28 mL Exp 2028 Alcohol-free, liquid skin protectant. It dries rapidly to form a breathable, transparent, waterproof film that protects intact or damaged skin from bodily fluids, adhesive trauma, and friction for up to 72 hours.