30 Aromahalers and 3 applicators. The Aromahaler is FDA approved as a medicinal delivery device. It delivers vapor from essential oils directly into the air inhaled through the nose. In this way, the active component of the oil goes directly and immediately to the limbic nervous system, bypassing the digestive system and the liver. This small but efficient device - fitting comfortably under your nose - provides hours of vapor from less than 1/7 drop of Essential Oil. The Aromahaler is a unique 3-layer device on a peel away staging sheet that keeps EOs from directly touching the skin and is virtually undetectable when worn. *Please note that the olfactory nerve fatigues easily. This means you may lose perception of the smell, but the vapor is still being supplied (and thus the therapeutic effects). It's somewhat like walking into a house and smelling cookies baking. You'll notice the smell upon entering the house, but won't be aware of it an hour or so later.