Hayfever Relief for Adults Nasal Spray gives all day and night relief in the prevention and treatment of common symptoms of hayfever and airborne allergies. This simple-to-use nasal spray works right where the problem starts, in the nose. Anti-inflammatory action to prevent the symptoms It is developed with an anti-inflammatory action that works to both prevent and treat the onset of allergic symptoms such as inflammation and swelling in the nose. Please note that results may vary.