Studies prove that pleasing scents can aid focus and concentration levels. Specifically formulated for the Venta Airwasher, our premium aromatherapy oils add a welcome touch of fragrance to the hydrated and purified air in your room. Made up of 100% natural essential oils, try one of each of our Refreshing, Vanilla and Eucalyptus fragrances in our combination pack. Simply pour half a cap of oil from the 1.7-ounce bottle directly into the water in the Lower Housing and enjoy the fragrance while running your Airwasher. Not intended for use in the Venta 6 Series units.