Prevalin Allergy For Kids Spray is clinically proven to reduce allergic rhinitis, an allergic reaction in the nose, the most common type being Hay Fever. Prevalin also reduces symptoms experienced such as sneezing, runny noses, blocked noses and itchy/watery eyes. The Prevalin spray creates an impermeable barrier on the nasal mucosa and will block the pollen and allergens from triggering an allergic reaction whilst working with the body's natural system to remove them. Prevalin should be used before coming into contact with allergens, as it prevents them from reaching the nasal mucosal lining, thus limiting allergy symptoms. Use prevalin as soon as you feel your body reacting to the pollen or the airborne allergen. Apply 1 to 2 sprays into each nostril, 2 to 3 times a day. Before using Prevalin, shake the bottle vigorously in upright position for at least 4 times. Remove the cap from the bottle. Prime the pump before initial use. To prime, press the white applicator down for 5-10 seconds and then release. Repeat until a full spray is obtained. Tilt head slightly forward. Hold the bottle upright, insert the tip fully into nostril and spray once. Spray once more if necessary. If you forget to take a dose, take it as soon as you remember it unless it is nearly time for your next dose. Do not take a double dose (two doses at the same time) to make up for the forgotten dose.