The Facial Mist Spray Cool Mist Ultrasonic Console Humidifier is a handheld ultra fine mist sprayer that holds 14ml of water. The unit uses ultrasonic technology to output fine mist to cool and moisturize your face and body. The unit is powered by 2 x AAA batteries (not included) and is small enough to store in your purse. Great for days when it is hot or dry. Great for personal skin care such as facial moisturization, refreshing your skin, cooling mist, and for eyelash extensions. The invisible facial mist spray will automatically shut off after 45 seconds. The blue light will blink if there is low or no water inside the tank. We recommend using filtered or purified water only. Do not use essential oils or cosmetic liquids as it can damage the unit.