Aromatherapy Inhalers are a way of experiencing the benefits of essential oils without applying them directly to your skin. Each deep breath of these therapeutic oils helps your body to absorb and utilize the aroma. To use: hold the inhaler just below one nostril and inhale deeply while pinching the other nostril closed. Repeat as desired. Recap tightly after each use and the inhaler should last for about 2-3 months, depending on frequency of use.