Hoe does a saline solution assist in preventing rhinitis? thanks.

Wash and moisterize: Saline is salt water, the same consistency as your body fluids, 0.9 % salt water. It is used to flush wounds and skin lesions to help clean debris out of these areas. Thus the nasal spray keeps your nose moist, especially important to remove mucous, allergens in the nasal pathway. In the dry atmosphere in the winter time, your house has less moisture and your nose inside will be dry.