 You're still supposed to keep your hands on the wheel, right? You're supposed to be ready to take over at a moment's notice. Why is Navaj perfect for allergy sufferers? Rhino Systems Medical Director Dr. Howard Levine explains. If someone's exposed to allergens, they can get rid of those immediately by washing out the nose. Navaj works by pulling saline in one nostril, through the nose, and out the other nostril, sucking out allergens, mucus, dust, and germs. Experience on-the-spot relief so you can breathe easier, sleep better, and feel healthier.