Flonase Sensimist Allergy Relief Nasal Spray relieves nasal congestion plus runny nose, sneezing, itchy nose, and itchy, watery eyes (1) with a fine mist that is scent free. This allergy spray is full prescription strength, offering non-drowsy, 24-hour, long-lasting relief of allergy symptoms caused by allergens, including pollen, mold, dust, and pet dander. To use, shake the bottle vigorously, prime the bottle for use by pumping until a fine mist appears, then spray up to two sprays directly in each nostril (for adults, children 2-11 use 1 spray per nostril per day). This allergy spray is formulated for daily use in adults and children 2 years and older. (1) Flonase Sensimist is indicated for itchy, watery eyes in adults and children 12 years of age and older (2) Flonase acts on multiple inflammatory substances (histamine, prostaglandins, cytokines, tryptases, chemokines, and leukotrienes). The exact number of mediators and precise mechanisms are unknown