This product is used to cleanse and relieve nasal passages affected by nasal allergies, dryness and hay fever, sinus pressure and nasal stuffiness, nasal symptoms from flu and cold and nasal irritation from occupational and house dust, fumes, animal dander, grass, pollen, smoke, etc. It has custom-designed cap that comfortably fits any nasal opening. It is excellent for cleansing prior to use of nasal spray medications.This product is drug-free and preservative-free. The easy squeeze bottle system allows you to deliver saline solution with positive pressure to clean the nasal passages thoroughly, while maintaining your head in an upright position. You have complete control of the pressure and volume of solution, ensuring a gentle, soothing and therapeutic experience. Daily rinsing is safe and will keep your nasal passages clean, healthy and open.