Ultrasonic cold mist, gentle and non-irritating: Ultrasonic high-frequency vibration technology is used to produce delicate cold mist (mist particle diameter <5µm), which does not produce high temperature and does not destroy the activity of essential oils, avoiding the deterioration of essential oils and aroma distortion caused by traditional heating diffusers; At the same time, the cold mist does not increase the ambient temperature, it is not sultry to use in summer, and it is not dry in winter with heating. The elderly, children, children, and pets can use it with peace of mind..syi