This aromatherapy essential oil purifier is a perfect companion for air-conditioning room, winter months and bedroom, hotel, spa, yoga etc to refresh and humidify the air by vaporize water and essential oil in the tank. This ultrasonic aroma diffuser releases your favorite fragrance by ionizing essential oil and produces negative ions which helps you to lift your mood and discharge pressure in scented and fresh air. 7 changing mood light is available that you can choose the color you like or let it changing by themselves to make your space romantic. This can be used in Beauty salon, Bedroom, Living room, SPA, Yoga, Conference room, Office, Reception center, Toilet, baby room, Hotel, Hospital etc.