Car diffuser plugs into your car's lighter outlet and uses low levels of heat to volatilize the essential oils. Car Scenter Electric Diffuser helps you enjoy natural aromas while driving and to deodorize and refresh your car. This diffuser is perfect for smokers and for those who want to fragrance their cars naturally without the use of chemicals found in most car diffusers today. Plug the car diffuser into the lighter/adaptor outlet and within minutes you will experience the benefits of your chosen essential oil.