The pure Guardian 200ml aromatherapy essential oil diffuser adds style to your spa experience with the unique, hand-dipped, Murano-style glass design. Simply add a few drops of essential oil to the water, and the ultrafine mist will quickly and continuously fill the room with the natural oil essence. The diffuser is quiet and won't disturb you when you're sleeping or meditating. The 200ml, large water reservoir allows for a longer run time!