Vicks Sinex Severe Ultra Fine Nasal Decongestant 0.05% Nasal Spray 15 ml - EachTemporarily relieves nasal congestion that accompanies colds, hay fever, or other upper respiratory allergies, sinus congestion and pressure One squirt of ultra fine mist lasts up to 12 hours. Active ingredient is 0. 05% oxymetazoline HCl; Sinex Severe also includes aloe. There are 15 mL of nasal decongestant spray in a squeeze bottle.