Does Mouth Taping
Actually Improve
Your Sleep?
We're running an independent study to find out. Track 4 nights of sleep with your existing wearable. We provide the mouth tape. You provide the data. Together, we get real answers.
Free Mouth Tape for Participants Free
Every participant receives a full bag of Sleep Karma Bamboo Silk Mouth Tape (30 strips) — just cover $6.95 shipping. Enough for the study and weeks of continued use.
Mouth taping has millions of advocates — but almost no independent data.
Search for "mouth tape sleep" and you'll find thousands of anecdotes, influencer endorsements, and product claims. What you won't find is a straightforward, independently conducted study measuring whether it actually moves the needle on objective sleep metrics.
That's what this study aims to produce. Not a clinical trial — a structured, transparent consumer study using the sleep trackers people already wear. Real participants. Real devices. Published methodology. And results we'll share regardless of what they show.
4 nights. Your own control group.
A checkerboard design where you alternate between tape and no tape. Each person is compared against themselves — the gold standard for eliminating individual variation.
No Tape
Sleep normally. Submit your sleep score in the morning.
Mouth Tape
Apply tape before bed. Submit your score in the morning.
No Tape
Back to normal. Submit your sleep score in the morning.
Mouth Tape
Final night. Submit your score — you're done!
Within-Subject Crossover (ABAB)
This study uses a within-subject crossover design. Instead of comparing Person A (who tapes) against Person B (who doesn't), we compare each person against themselves. Night 1 vs. Night 2 for the same sleeper, same bed, same tracker.
The alternating pattern also reduces order effects and novelty bias. If someone sleeps better on Night 2 just because they're excited about trying something new, Night 3 (no tape) resets, and Night 4 (tape again) tests whether the effect holds.
| Night | Condition | What You Do | Morning Task |
|---|---|---|---|
| 1 | Control | Sleep as normal — no tape | Submit score + screenshot |
| 2 | Treatment | Apply mouth tape before bed | Submit score + screenshot |
| 3 | Control | Sleep as normal — no tape | Submit score + screenshot |
| 4 | Treatment | Apply mouth tape before bed | Submit score + screenshot |
Statistical Approach
We use paired statistical tests (paired t-test or Wilcoxon signed-rank) to compare tape vs. no-tape nights across all participants. We report confidence intervals and effect sizes — not just averages. If results are null, we publish that too.
What we're tracking.
All data comes from your existing wearable. No new hardware required.
Sign up. Sleep. Submit. Done.
Sign Up
Enter your email and tell us which sleep tracker you use. Takes 60 seconds.
Get Your Tape
We ship you a free bag of Sleep Karma mouth tape. You just cover shipping ($6.95).
Track 4 Nights
Follow the protocol. Each morning, submit your sleep score via a quick form (90 seconds).
See the Results
Get early access to the aggregate findings before we publish them publicly.
Contribute to real research. Get real perks.
This isn't a sales funnel disguised as science. It's an independent study that happens to come with some nice benefits.
Free Mouth Tape
A full bag of Sleep Karma bamboo silk mouth tape — 30 strips. Enough for the study and then some. You just pay $6.95 shipping.
Early Access to Results
See the aggregate findings before anyone else. How did your nights compare to the group? Did mouth taping move the needle?
Your Own Data
See your personal tape vs. no-tape comparison. It's one thing to read about mouth taping — it's another to see your own numbers.
Quick eligibility check.
You're a good fit if:
- You use a sleep tracker regularly (Oura, Whoop, Apple Watch, Garmin, Fitbit, Samsung)
- You're 18 or older
- You're based in the US
- You've never tried mouth tape before (or not in the last 30 days)
This study isn't for you if:
- You have untreated sleep apnea requiring CPAP
- You have chronic nasal congestion
- You currently use mouth tape regularly
- You're under 18
Questions? We've got answers.
Evident is an independent health research platform. We evaluate products, run studies, and publish findings — whether positive, negative, or mixed. Sleep Karma is supplying the mouth tape for this study, but the research is designed and published by Evident. We report what the data shows, period.
The mouth tape itself is free. The $6.95 covers the actual cost of shipping the product to you. We're not making money on this — it just allows us to run the study without it being a net loss on every participant.
Any wearable that gives you a nightly sleep score: Oura Ring, Apple Watch, Whoop, Garmin, Fitbit, Samsung Galaxy Watch, or similar. You just need to be able to see a sleep score each morning and screenshot it. If you're not sure if your device qualifies, sign up and we'll confirm.
Sleep Karma's mouth tape is ISO 10993-1 certified for biocompatibility, uses medical-grade hypoallergenic adhesive from Henkel (Germany), and is PFAS-free. It's designed specifically for nightly skin contact. That said, if you experience any irritation, stop using it and let us know.
Your data is anonymized and aggregated for the published study. We never share individual data publicly unless you explicitly consent to be featured as a case study. You can withdraw at any time. We use your email only for study communications and results — no spam, ever.
Four nights. Each morning you spend about 90 seconds submitting your sleep score. Total time commitment: under 10 minutes across the entire study. Plus a brief exit survey on day 5.
We publish it anyway. Evident's credibility is built on transparency, not on producing favorable results. A null finding is still valuable — and still publishable. The goal is truth, not marketing.
Join the Evident Sleep Study
4 nights. Real data. Free mouth tape. Limited spots available.
By signing up you agree to participate in the 4-night study and to share anonymized sleep data. We'll email you next steps within 24 hours. No spam — ever.