How to use
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Feno Smartbrush™ 2
The next generation of the Feno Smartbrush, available from late October 2026. Smartbrush 2 runs on Smarthandle OS 2 and pairs exclusively with the Snap Charger 2. Its redesigned display greets you by name and shows your device status at a glance, so you always know your brush is connected, charged and ready for your next 20-second clean.
- Late October 2026 and after
- Smarthandle OS 2
Feno Smartbrush™
The original Feno Smartbrush, introduced in 2025. Smartbrush runs on Smarthandle OS 1 and charges with the original Snap Charger. Its display shows the time and a personalized morning greeting, and every session delivers complete oral care in 20 seconds.
- 2025
- Smarthandle OS 1
Feno App
Understand Your Oral Health. Get a clearer view of your teeth, gums, tongue, and soft tissues—all in one place. Adjust cycle duration and speed, and manage your Smartbrush settings for a more tailored clean. Capture detailed mouth scans and turn them into AI-powered observations and personalized oral-care insights.
Our Android app is in beta, so some screens may look a little different from what’s shown on our website.
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How do I use the Feno Smartbrush?
To use the Feno Smartbrush, rinse the Mouthpiece under running water and spread a thin layer of toothpaste (we recommend our custom-formulated Feno Foam foaming xylitol toothpaste) along both channels of the Mouthpiece.
Then, insert the Mouthpiece into your mouth, fitting the teeth into the Mouthpiece grooves, and hit the start button. While on, move the Truefit Mouthpiece in a slow circular motion for optimal bristle contact.
Once your brushing cycle is complete, rinse the Mouthpiece and place the Smartbrush in the Snap Charger to charge the device.
What are the bristles made of?
Feno uses 18,000 ultrasoft nylon bristles. Nylon is the same material found in most toothbrushes. The bristles are gentle on your gums and built to hold their shape. Like any toothbrush, they wear down over time, so swap your brush head every three months to keep them working their best.
Do I still need to floss?
Yes, same as with any toothbrush. Feno cleans the front, back, and top of every tooth. Floss cleans between them. Keep flossing once a day.
How do I clean my tongue?
Every Feno comes with a tongue scraper. Use it after you brush. It takes a few seconds and clears the film that a toothbrush head can't reach. In a clinical study, tongue scrapers beat toothbrushes at fighting bad breath, 75% to 45%.*
*Pedrazzi et al., Journal of Periodontology, 2004
How long does the battery last?
7-day Battery. Designed for portability and travel, the Smarthandle stays charged for an entire week.