The CarScenter diffuser will surround you with mood-enhancing natural fragrances whenever you are on the road. Apply a few drops (5 to 10) of essential oil on the refill pad insert the pad into the diffuser and plug the diffuser into your cigarette lighter. Moments later you will enjoy the experience of aromatherapy in your very own vehicle. CarScenter comes with reusable pads..Other products from HerbsPro