Help your child drift off to dreamland with the Vicks 3-in -1 Sleepy Time Ultrasonic Humidifier, a cool-mist humidifier, essential oil diffuser, and color-changing night-light in one. The Sleepy Time humidifier with essential oil diffuser helps you create a personalized, calming environment for your child to rest. Soothe a cough and provide nasal congestion relief with the humidifier's added moisture. It works on humidifying air while providing the comforting scent of Vicks anytime when adding Vicks VapoPads. The Vicks Sleepy Time 3-in-1 (VUL500) cool mist humidifiers for bedrooms do not require a filter, and run up to 24 hours per filling. Our line of humidifiers, steam inhalers, and vaporizers help you breathe better and sleep more comfortably, wherever you are. This Vicks bedroom humidifier adds soothing moisture for everyone in any room, especially during cold/flu season, helping create comfort while you experience temporary relief. It can provide calming scent, gently illuminate the room, and support a more comfortable sleep for the entire family. With its easy, soothing operation, it helps with cough and congestion relief, and sets the stage for a good night's sleep.