This simple tool is a breeze to use. To add essential oils, remove the plug at the bottom of the inhaler, insert three to ten drops of essential oil into the base, and re-seal the plug. Hold the pipe to the mouth, inhale deeply, and exhale through the nose. You can also practice alternate nostril breathing, holding the inhaler to each nostril and inhaling deeply while exhaling through the other nostril (Nadi Shodhana Pranayama). Repeat for up to twenty minutes. Since the inhaler is placed directly on the nose and mouth, it's important that inhalers are not shared.