Diffusers turn water and essential oils into a very fine mist for aromatherapy purposes. Aromatherapy is useful for pain relief, mood enhancement, increased cognition, meditation practices, treating common colds, and more. The GreenAir AromaWave Essential Oil Diffuser features a unique and compact design for maximum portability. It has a silent internal fan, does not require any water, and plugs into any car charger. This diffuser is not only great for travelling and convenience, it is also extremely affordable and built to last. Get yours and start enjoying the benefits of aromatherapy today, wherever you re going! Aroma on the Move - Diffusers vaporize essential oils for aromatherapy. BPA Free. - Whether on a cross-country road trip or stuck in city traffic, the Aroma Wave aromatic diffuser will be right with you. - Innovative Waterless Technology - The GreenAir AromaWave Essential Oil Diffuser uses a waterless light warming unit and does NOT require any water, eliminating potential splashes and spills. - Easy to Use - The GreenAir AromaWave is designed to alieve headaches, not cause them. It features an easy pull-out warming pad for effortless oil application. Simply add a few drops and plug back in.