Fill with water. Can also be mixed with any non-viscous liquid such as alcohol, astringent or cologne to elevate any service. After charging is completed, press the power button and the blue led light will engage, machine will atomize automatically. Click the power button to select high or low mist. Please turn off the power after the atomization is completed. During use - the liquid in the water reservoir should be upright to work properly. Spray on hair, skin, or barber/salon chairs and stations.