NasaMist® Extra Strength Hypertonic Saline Spray is a sterile natural soothing saline spray. Applying a gentle fine mist in the nose is an excellent way to keep the nasal passages moist. NasaMist® Saline Spray comes in isotonic, pediatric and hypertonic concentration. Nasal sprays should not be mistaken for large volume irrigation systems like Sinus Rinse™Nasal Wash.