Ultrasonic Aroma Essential Oil Diffuser is safe and does not harm the essential oil of any ingredients. This stylish cool mist humidifier adds moisture to your air to eliminate dryness and help with your dry chapped skin, chapped lips and dry sinuses. Fight back against dry air. An ideal way to add moist, comfortable air to small bedrooms, hotel rooms, tabletops and even workplace cubicles. Most of all, it is whisper-quiet operation won't interfere with your sleep.This 2nd generation produces more mist than old version. Please use 100% pure essential oils with no corrosivity. Add a drop of your favorite essential oil to give your room a pleasant scent. Features include 7 color changing lamps for your choice, nightlight, programmable on/off cycles and auto shut-off.once the water runs out,it will be auto shut-off to protect the device. Content: 100ml,Material: PP Hard plastic,Working time: up to 6 hours. It has adjustable two mist settings:continuously and intermittently.