AROMATHERAPY CAR DIFFUSER PURIFYING AND OXYGENATING CAR DIFFUSION BLEND Eucalyptus is a powerful anti-microbial. As the molecules evaporate and change, it actally produces pure oxygen. Bergamot Orange adds a spicey-sweet citrus nuance. Diffuse this fresh blend when stuck in slow moving commuter trafic or in crowded city driving. Just apply the drops to refill the pad