This formula may have an immediate, dramatic and direct impact on the sinus. It is an extremely pungent formula with aromatic compounds that produce vapors that open and dilate the sinus passageways in order to drain them, deepen breathing and help to kill microbial inundation.Cold and Sinus Blaser will open even the most stubborn and clogged sinue cavity for anywhere from a short period of time to a prolonged time.ALCOHOL FREE, Parve K