Flonase Sensimist Allergy Relief nasal spray provides all-day relief for even the worst seasonal, year-round, indoor, and outdoor allergies, all in a fine scent-free mist you'll barely feel. Flonase Sensimist relieves nasal congestion plus runny nose, sneezing, itchy nose, and itchy, watery eyes. Flonase Sensimist is a 24-hour allergy medicine that contains fluticasone furoate, delivered by a patented bottle specially designed for a virtually drip-free allergy mist.