Use 4 Way Fast Acting Nasal Spray during allergy season or anytime you have a stuffy nose. It acts fast to relieve congestion and continues working for up to four hours. This nasal decongestant spray acts fast on swollen membranes, sinus congestion and pressure. It is safe to use for adults and children 12 years of age and over. Use two or three sprays in each nostril not more often than every four hours. This formula is easy to use. With the head in a normal, upright position