This unique barrel designed 300ml ultrasonic air mist humidifier with changing colour function is perfect for any home decor. Relax whilst the diffuser releases soothing aromatherapy essential oil mist and scents. Ultrasonic aroma humidifiers use ultrasonic vibrating liquid water to produce water mist and emit it in the air for humidification. It improves air quality and also refreshes the skin and can be taken as a skin care, keeps skin healthy and moist. By adding 2~3 drops of various kinds of essential oils into the water, it will mix fragrance with water mist and has the effect of removing the dust & peculiar smells as well as adding amazing aroma and fragrance. To be eligible for a return, your item must be unused and in the same condition that you received it. Several types of goods are exempt from being returned.