Mute works by gently opening up the nasal airways allowing you to breathe more easily through your nose and helping you to keep your mouth closed during sleep. Better nasal airflow helps to reduce the vibrations in the airway that can cause disruptive snoring. By improving breathing through the nose, Mute is an effective, drug-free way to reduce snoring, nasal congestion from cold, allergies, a deviated septum or during pregnancy.