Built by dental professionals
Finally, a score for your smile.
Your dentist sees you twice a year. Feno sees you twice a day.
★★★★★
4.9 from 500+ reviews · Money-back guarantee
Built by dental professionals
Finally, a score for your smile.
Your dentist sees you twice a year. Feno sees you twice a day.
★★★★★
4.9 from 500+ reviews · Money-back guarantee
Why it matters
Your health has a blind spot.
The Feno Smartbrush tracks what's happening in your mouth, twice a day. Because oral health leads somewhere bigger: your heart, your brain, and how you age.
★★★★★
4.9 from 500+ reviews · Money-back guarantee
HOW IT WORKS
The
20 second
rule
Done. in three steps
Pump the foam
One pump of Feno Foam across the bristles. The xylitol-based micro-foam works into spaces regular paste can't reach.
Insert and press once
Your TrueFit Mouthpiece is sized to your mouth, so every tooth sits against the bristles. Press the button and glide the Feno in small circles.
Done in twenty seconds
250 strokes across every tooth at once. Top and bottom, inside and out, the same thorough clean every single time.
No zones to remember, no two-minute timer to negotiate with.
Pick it up, and twenty seconds later your whole mouth is clean.
★★★★★
4.9 from 500+ reviews · Money-back guarantee
clients reviews
Why people love
Feno
Founder's Edition Bundle
The upgrade your routine
was
missing.
★★★★★
4.9 · 500+ reviews · 99% would recommend
$299
or 4 payments with Affirm · HSA/FSA eligible
Feno Smarthandle
Smarthandle + Snap Charger
TrueFit Mouthpiece
Sized to you
Feno Foam, 3 tubes
$29.99 → FREE
$9 → FREE
1-Month of Feno Plus
$12.99 → FREE
Get the Founder's Edition
Money-back guarantee
·
Free US shipping
·
Ships within 1 week
TrueFit Mouthpiece
One size fits no one. So we made seven.
Setup starts with an AI scan of your smile that matches you to one of seven TrueFit sizes.
The flexible plate then molds to your dental arch, so bristles reach every tooth, even the ones a regular brush has missed for years.
★★★★★
4.9 from 500+ reviews · Money-back guarantee
TrueFit Mouthpiece
One size fits no one. So we made seven.
Setup starts with an AI scan of your smile that matches you to one of seven TrueFit sizes.
The flexible plate then molds to your dental arch, so bristles reach every tooth, even the ones a regular brush has missed for years.
★★★★★
4.9 from 500+ reviews · Money-back guarantee
Built with dental professionals
Approved by Dental Professionals
Dr. Rosa Tran Banke
General & Cosmetic Dentist Rosy Dental, California
Dr. Miles Madison
Periodontist & Dental Implant Specialist. Beverly Hills Periodontal Institute, California
Paulina Ghassabian
Registered Dental Hygienist
New York University, New York
Dr. Huzaifa Kapadia,
Dentist,
Kapadia Dental Care, Michigan
product comparison
Feno vs
others
20 seconds full mouth brush
Health Insight App
At Home oral Scanner
Personalized mouthpiece
Connected Health Coach
OTHERS
clients reviews
“
Cleaning my teeth in just 20 seconds feels incredible, and every tooth gets attention. My teeth have never felt this clean.
Andrew · Verified buyer
4.9
★★★★★
Averaged across 500+ reviews. 94% five-star · 99% would recommend.
★★★★★
The future of brushing teeth
It is insane how well it cleans your teeth. Every time I've brushed, I can't feel a single piece of plaque on my teeth, this brush leaves them silky smooth. In only 20 seconds? Nuts.
Collin · Verified buyer
★★★★★
My dentist noticed
The smartbrush has been a game changer for me. My dentist commented on how great my teeth and gums are looking.
Meghan H. · Verified buyer
★★★★★
Gums don't bleed anymore
I've always had a problem with my gums bleeding. I've been using Feno for about 45 days and my gums don't bleed anymore. And it only takes 30 seconds.
Greg · Verified buyer
★★★★★
Innovation at its finest
A thorough and quality cleaning in a fraction of the time. It's only 30 seconds on the Feno as opposed to 3 to 4 minutes on my Oral B.
Bill C. · Verified buyer
★★★★★
A great investment
I use my smart brush 2 to 3 times a day and it takes no more than 30 seconds each time. My dentist compliments how clean my teeth are during my visits.
Earnest · Verified buyer
★★★★★
Quickest full clean ever
Happy I got it. Saves me over 2 hours a month on brushing and my mouth feels perfectly clean.
Kal W. · Verified buyer
Questions
Before you
switch.
How is the Feno Smartbrush™ different from other electric toothbrushes?
+
The Feno Smartbrush is a radical step forward for oral health. The average toothbrush has 2,500 bristles; the Feno Smartbrush has an average of 18,000. The average toothbrush brushes each tooth one at a time; the Feno Smartbrush brushes all teeth simultaneously. The average brush cycle takes 120 seconds; the Feno Smartbrush takes 20. The Feno Smartbrush is also the first brush that takes deep scans of your teeth and gums to provide ongoing insights into the condition of your oral health. An astonishing 90% of individuals suffer from some form of gum disease, an oversight we aim to correct with the Feno Smartbrush, designed as the product to bridge oral health and overall health.
Does the Smartbrush need any user technique to work effectively?
+
The Feno® Smartbrush is designed to be user-friendly and requires minimal technique for effective use. While the advanced technology, including the TrueFit Mouthpiece™ and ArcFlow Tech™, ensures comprehensive cleaning, users should still follow a simple technique for optimal results. While the Smartbrush is on, it is recommended to move the TrueFit™ Mouthpiece in a slow circular motion. This motion helps to achieve optimal bristle contact with all areas of the teeth and gums, enhancing the brushing results.
How does the Feno app provide personalized feedback and advice on oral health?
+
The Feno app revolutionizes personalized oral care by leveraging advanced technology and professional expertise. Embedded in the Smarthandle of the Smartbrush is a scanner that captures images of your mouth, including critical areas like the gumline, tooth integrity, and signs of inflammation. Once you complete a scan, the data is automatically synchronized with your profile on the Feno app. This seamless integration ensures that your oral health information is consistently up-to-date and readily accessible. The app then utilizes a dual approach for analysis: a network of licensed dentists and an evolving machine learning model. These dentists review and annotate your scans, providing valuable insights into your oral health status. Their annotations not only offer you personalized feedback and advice but also contribute to training our machine learning model. This model is designed to recognize patterns and deliver rapid, routine insights, enhancing the accuracy and effectiveness of the feedback you receive over time. Additionally, the app's chat feature allows you to directly communicate with a dentist from our network. This functionality enables you to discuss your scan results, ask questions, and receive expert advice, all within the app. You can easily share your scan data and reports with your dentist during these consultations, making the discussions more informed and productive.
Is there privacy built-in with the scanner?
+
Yes, the Feno Smartbrush includes multiple built-in privacy features for the scanner. The device is equipped with a secondary privacy chip, ensuring that all operations related to the scanner are securely handled. This chip prevents remote access to the scanner, enhancing the security and privacy of the device. Additionally, all data collected by the scanner is encrypted, providing an added layer of security to protect users' personal information.
Does Feno work without the app?
+
Yes. The brush is fully functional on its own. The app just adds to it: tracking, coaching, and insights that help you get more out of every session over time.
What's included with Feno, and are there any ongoing costs?
+
Feno is a personalized-fit, motorized, sensor-equipped device that brushes your whole mouth in seconds. There are two consumables to plan for: Feno Foam, and a fresh TrueFit Mouthpiece we recommend changing every three months. Everything's listed upfront, so you always know what to expect.
Can I use my own toothpaste, or do I need Feno Foam?
+
You can use any toothpaste you like. That said, Feno Foam is built for the mouthpiece, it spreads evenly across all 18,000 bristles at once, so every tooth gets the same coverage in that 20-second clean. Toothpaste works; foam just works better with how Feno brushes.
What if the mouthpiece doesn't fit my mouth?
+
Feno doesn't ship one universal size. Based on your mouth scan, we match you to the right TrueFit Mouthpiece from our seven sizes, a personalized fit, not a one-size tray (which is exactly why older U-shaped brushes failed). If it doesn't feel right at first, it's often just seating: place it in gently with the device off, bite down softly, and wiggle your jaw so the bristles reach every tooth. Still not comfortable? Reach out to support and we'll resize you. Your first two size exchanges are free.
Am I locked into a subscription?
+
No. Feno Plus is optional and you can cancel anytime from your account. You can also buy refills of Feno Foam one off whenever you need them.
What if I don't like it?
+
Every order is covered by our money-back guarantee: you have 30 days from delivery to return it. For US orders we provide the return label; outside the US, return shipping is covered by you. Just reach out to support and we'll walk you through it. And because your first two size exchanges are free, an imperfect first fit never costs you anything.
Who is Feno not for?
+
Feno isn't the right fit for everyone. We don't recommend it for anyone under 18, anyone with active braces, anyone with a crown placed within the last 4 weeks, or anyone with a pacemaker. If any of these apply to you, we'd suggest checking with your dentist before ordering.
The best twenty seconds of your morning.
About Feno
Our Science
Privacy Policy
We encrypt every scan, never sell your data, and a privacy chip keeps the camera off outside your mouth.
About Feno
Our Science
Privacy Policy