Colorful Mini Humidifier Water-soluble essential oils can be added,You can add a few drops of your favorite essential oil to give your room a pleasant scent.( Can Only be added the soluble in water essential oilIt can effectively moisturize dry skin and help you reduce skin peeling.The portable USB mini humidifier uses one button control, one button controls all functions. It shut-off when the water level is low. Thus, you don't have to worry about the humidifier being damaged in the absence of water. You can use it at night without worrying about safety.This Colorful Desktop Cool Mist humidifier has low noise design (lower than 30dB) which creates a quiet environment and brings you great night sleep and disturbance-free work environment. If you place it on the desktop, you do not even feel it.This Colorful Cool humidifier Power Supply compatible with any device USB port which ensures it can be in the car for travel and be used bedroom, lounge room, yoga, spa as well.