This veterinary formula is guaranteed not to sting. It provides fast, soothing relief of allergic problems associated with flea bites. It will also help discourage licking and wound biting. Contains: Lidocaine HCL, Benzethonium Chloride, Allantoin, Denatonium Benzoate, Aloe Vera and Lanolin in a non-oily, non-sticky gel base with normal skin pH. Comes in a squeeze bottle with convenient applicator tip.