Mouth tape
What is mouth tape?
Updated 13 August 2026
Short answer
Mouth tape is a small, gentle adhesive strip worn across the lips during sleep to encourage nasal breathing and reduce mouth-breathing snoring.
Mouth tape for sleep sits across the centre of the closed lips. It doesn't seal the mouth shut — a well-designed strip still lets you breathe, speak or cough around it.
Its purpose is to remind your body to keep the lips together so air flows through the nose instead of the mouth. This supports nasal breathing's natural filtering, humidifying and nitric-oxide benefits.