It can help relieve symptoms of allergies, sinus infections, or colds. You can purchase saline solution over the counter or make it at home. Saline solution, also called isotonic solution ...

A saline nasal spray is a simple, sterile, saltwater solution that is good for congested nasal cavities, says Dr. Alexander.

Treat allergies and asthma. Continue using a corticosteroid spray. Use a nasal spray or rinse with a saline solution. Avoid dust, dirt, smoke, or other nasal irritants. Nasal polyps are ...