A woman asleep in a dim bedroom wearing mouth tape

Mouth tape, nasal strips and better sleep

Sleep better by breathing through your nose

Your nose filters, warms and humidifies every breath.

Your mouth doesn't. That difference adds up over eight hours.

A night of mouth breathing, hour by hour

What can happen when your mouth falls open in your sleep.

  1. You fall asleep breathing through your nose.

  2. Your jaw relaxes, your lips part, and you start breathing through your mouth.

  3. The snoring starts. An open mouth is a common cause of it.

  4. A dry mouth wakes you. Air that skips your nose isn't humidified.

  5. You get up tired after eight hours in bed.

What the research says

Mouth tape
A 2025 review found 10 small studies of mouth taping, all rated poor quality. The evidence for it is limited.
PLOS One, 2025Read the guide
Nasal strips
In a placebo-controlled trial of people with chronic rhinitis, snoring dropped from about 258 to 173 snores an hour with a nasal strip.
Randomized controlled trial, PubMedRead the guide
Nasal breathing
Your sinuses produce nitric oxide, which you breathe in when you breathe through your nose.
Nature Medicine, 1995Read the guide

Trying it

How most people start

Check your nose

Breathe through it with your mouth closed for two minutes. Our nose test times it.

Open it up

If it feels blocked lying down, a nasal strip makes breathing through it easier.

Get used to the tape

Wear it for fifteen minutes while you read before you try it overnight.

Your first week with mouth tape
Take the test