Does mouth taping give you a better jawline?

Is there any evidence mouth taping changes your jawline?

No. We found no study that measured jaw width, jaw muscle size, or facial shape in any mouth-taping trial. Sleep Foundation says plainly that no scientific evidence shows mouth taping directly improves the jawline, and it calls claims about jaw muscles or facial reshaping anecdotal.

Cleveland Clinic lists structural improvements to the jawline among the benefits people claim, while noting that the wider claims lack scientific support. The jawline is a promoted benefit, not a tested one. That gap between marketing and data is the whole story here.

What the sleep research actually shows

Bottom line: the only human data concerns sleep apnea and breathing, and it is thin. A 2025 systematic review pooled 10 studies with 213 patients, and only two showed statistically significant improvement in sleep apnea markers such as AHI or oxygen desaturation, per the PLoS One systematic review.

A 2025 scoping review of nine studies found mouth taping improved obstructive sleep apnea metrics in two studies, and a study in asthma found no benefit. A 2026 meta-analysis from Alshehri and colleagues could not pool the mouth-taping data at all. Its quantitative finding was about nasal obstruction, which raised AHI by 13.78 events per hour.

Smaller studies look better, which is a warning sign in itself. A preliminary study of 3M tape in mouth-breathers with mild sleep apnea reported AHI and snoring index dropped by about half, but it was small and uncontrolled. A JAMA study of 54 patients with sleep apnea was non-randomized and suggested airflow may need to stay open in people with nasal obstruction.

Why the safety warnings matter more than the hype

Bottom line: for some people, this can be dangerous. The systematic review noted that some studies reported possible asphyxiation risk when nasal obstruction is present, and its authors judged the risk of harm from indiscriminate use to be potentially serious. Many of those studies also excluded people with nasal obstruction.

Sleep Foundation advises against mouth taping if you have untreated sleep apnea, chronic nasal congestion, or trouble breathing through your nose. It also notes there are no official guidelines for doing it safely. Cleveland Clinic lists skin irritation, anxiety, difficulty breathing, and sleep disruption as risks.

What to do instead if the jawline is the goal

Bottom line: tape will not get you a sharper jaw, and nothing in the research says it will. If appearance is what you want, ask a clinician about options that have been tested against facial outcomes, not trends that have only been tested in a feed.

If you tape because you snore or wake up unrefreshed, get a sleep evaluation first. Snoring can point to sleep apnea, which needs a diagnosis, not a fix you found online. A registered trial of silicone mouth tape (NCT06587256) is measuring safety and sleep outcomes over three months, not appearance. We did not check its status or results.

For the broader picture on the trend, see our mouth taping coverage.