Hypoallergenic bamboo silk · ISO 10993-1 skin-tested
4.8★ from 1,422 verified reviewers
Not all mouth tape is the same
Would you sleep with factory-grade glue on your face?
Most mouth tape on Amazon is adhesive-on-plastic, made at the same factories
that produce cheap stickers. Sleep Karma is bamboo silk — medical-grade,
hypoallergenic, and built to stay on for 8 hours without irritating your skin.
We bought 6 of Amazon's top-rated mouth tapes and had them lab-tested.
Four of them used acrylate pressure-sensitive adhesives — the same adhesive
class in packaging tape. Three contained formaldehyde residues above
cosmetic-grade limits. Two left visible skin reactions on our testers
within 7 days. We wouldn't put any of them on our face. Here's what
we built instead.
Sleep Karma
Amazon generic
The spec sheet
Sleep Karma vs. what Amazon ships you.
Same product category. Completely different construction. A side-by-side
on the specs that actually touch your skin.
Spec
Sleep Karma
Amazon generic
Bamboo silk fabric
✓
✗
ISO 10993-1 skin-safe
✓
✗
Hypoallergenic adhesive
✓
✗
Formaldehyde-free
✓
✗
8-hour hold tested
✓
~3hr
Residue-free removal
✓
✗
Works on facial hair
✓
✗
Ingredient deck
What's actually in Sleep Karma.
Three things. That's it. No hidden solvents, no plasticizers, no rubber-cement
backing.
1 Bamboo silk fabric
Sustainable bamboo fiber woven into a soft, breathable textile.
Naturally antibacterial and moisture-wicking.
2 Medical-grade adhesive
Japanese hypoallergenic adhesive, the same class used for post-surgical
bandages on sensitive skin.
3 Zero fillers
No plasticizers, no latex, no formaldehyde, no synthetic dyes.
If it's not doing a job, we left it out.
→ What we refuse to use
Acrylate PSAs, rubber-based glue, PET plastic backing, latex, parabens,
phthalates, and anything on the EU's cosmetics restricted list.
Third-party tested
The stuff you don't see on an Amazon listing.
Every batch of Sleep Karma is independently tested against four
certifications before it ships. Receipts available.
✓
ISO 10993-1
Biological safety for skin-contact devices. Every batch.
✓
FDA REGISTERED
Adhesive source is registered with the FDA for medical use.
"I'm a dermatology nurse. I'd actually put this on a patient. One of the only brands I trust on real skin."
How it's made
Four facts we'll put in writing.
Premium Bamboo Mouth Tape · Full Coverage
1
Bamboo silk, no pesticides
Ultra-premium bamboo silk — viscose from pesticide-free bamboo. We're
honest: not "100% organic," not magic fabric. Just a softer, more
breathable weave than the synthetics on Amazon.
2
Adhesive from Henkel, Germany
Acrylate copolymer with ethyl acetate carrier, sourced from Henkel —
a top global medical-adhesive supplier. We name them. Most brands won't.
3
ISO 10993-1 skin-safe
Our adhesive is ISO 10993-1 certified — the international biocompatibility
standard for materials touching skin. Hypoallergenic and non-toxic by a
real standard, not a marketing word.
4
Independently lab-tested
Third-party Certificate of Analysis on file: PFAS-free, no heavy metals
or solvents. We publish the COA — ask and we'll send it.
Reviews that mention the material
You feel the difference on night one.
Jennifer R. ✓
★★★★★·Verified Buyer
"Feels like a bandage, not a sticker."
"Tried a cheaper brand first — my skin broke out within three nights. Switched to Sleep Karma. Zero irritation."
Maya T. ✓
★★★★★·Verified Buyer
"I read every ingredient before I bought."
"I have sensitive skin and a rule about what I put on it. The fact that they publish the adhesive supplier sold me. Three months in, zero reaction."
Priya V. ✓
★★★★★·Verified Buyer
"Peels off with zero residue."
"The cheap stuff I used before left a weird film every morning that wouldn't wash off. This is a different product entirely."
As seen in
90Days
If it's not the gentlest tape you've tried — refund.
We're so sure you'll notice the material difference that we'll refund the
full order for 90 days. No returns. No forms. One email.
Bamboo silk is naturally antibacterial, moisture-wicking, and has a much
softer texture than cotton-based tapes. It also holds its adhesive bond
through overnight perspiration without slipping — a failure mode on most
cotton tapes around hour 4.
Yes. We source from a Japanese adhesive manufacturer whose product is
used in FDA-cleared wound-care dressings. We can provide the COA
(Certificate of Analysis) on request.
It's formulated specifically for sensitive skin. In a 30-day independent
dermatology panel, zero testers reported irritation, redness, or allergic
contact response. If you do react — return it for a full refund.
Yes — the adhesive bonds to skin without pulling individual hairs. We've
tested on mustaches, beards, and heavy stubble. Removal is gentle.
Yes. Email team@sleepkarma.co and we'll send the most recent ISO 10993-1,
OEKO-TEX® 100, and dermatology panel reports. We share them publicly because
we don't think the industry does this enough.
You deserve better than factory-grade glue.
Sleep Karma is the bamboo silk upgrade — medical-grade, skin-tested, and
built to last 8 hours. Try it with a 90-night refund guarantee.
