Ultrasonic Aromatherapy Diffuser BALEINEAUTHIS ITEM CONTAINS CERAMIC! WE RECOMMEND IN STORE PICKUP OR SHIP AT YOUR OWN RISK, AS CANADA POST DOES NOT COVER DAMAGE TO CERAMICS. THANK YOU. Ultrasonic Mist Diffusion What is it? This diffuser uses water to disperse the few drops of essential oils that you add to it. An ultrasonic disc transforms the water oil mixture into a cold steam which creates a pleasant aromatic mist that is naturally scented. There are a wide variety of ultrasonic diffusers