There are several types of aromatherapy diffusers, all of which are designed to disperse fragrant and therapeutic essential oils into the air. An aromatherapy diffuser can be used as a natural air freshener in a room or even in a car. Natural plant oils offer an alternative to synthetic fragrances that can cause allergic reactions in some people. As well as having a nice fragrance, pure essential oils can be used to promote physical and psychological well being. As the aroma molecules are diffused into the atmosphere, they