Feno

Feno Smartbrush is a U-shaped full-mouth electric toothbrush that brushes all teeth simultaneously in 20 seconds, using 18,000 bristles and an AI-powered app for oral health insights.

What is Feno?

Feno Smartbrush is a health-tech device that cleans the entire mouth in a single 20-second cycle. It takes a user's mouth shape via the app's FitKit scan and produces a personalized mouthpiece, then delivers a full-mouth clean with foam cleanser. The device runs on the Feno app (iOS/Android) and is made by Feno, co-founded by Dr. Kenny Brown (oral surgeon) and Hamet Watt (entrepreneur).

Key Features

• 20-second full-mouth brush — Brushes all teeth at once, reducing brushing time by 75% compared to standard electric brushes.
• 18,000 precision bristles — Deliver 250 strokes per 20 seconds, covering teeth and gumline simultaneously.
• TrueFit personalized mouthpiece — Custom-sized via app scan to ensure comfort and effective cleaning.
• Built-in oral scanner — Takes high-definition scans of teeth, gums, tongue, and soft tissue for health analysis.
• AI-powered health insights app — Tracks brushing habits, provides an Oral Health Score, and alerts you to early signs of inflammation or decay.
• Feno Foam with xylitol — Foaming cleanser that whitens teeth, fights cavities, and strengthens enamel with wild mint freshness.
• Magnetic wireless charging — Instant, cordless charging with 7-day battery life for portability.
• HSA/FSA eligible — Purchase can be paid with health savings or flexible spending accounts, plus 4 easy payments via Affirm.

Who is it for?

• Busy professionals — Reduce brushing time from 2 minutes to 20 seconds, saving 21 hours per year while improving oral hygiene.
• People with dexterity issues — The U-shaped design and foam action make brushing effortless for those with limited hand mobility.
• Health-conscious individuals — Monitor oral health trends and link them to systemic risks like heart disease, diabetes, and stroke.
• Tech adopters — Early users who want an AI-driven, scanner-equipped toothbrush with real-time feedback and teledentistry support.

What can you do with Feno?

• Track oral health trends — View weekly scores for teeth, gums, tongue, and soft tissue to spot early signs of decay or inflammation.
• Get personalized tips — Receive AI-powered recommendations tailored to your brushing habits and scan results.
• Connect with an oral health coach — Chat with a professional through the app for guidance on improving your routine.
• Share data with your dentist — Export scan results and reports to your dental provider for informed check-ups.

How does it work?

1. Download the Feno app and complete the FitKit scan to determine your mouthpiece size. 2. Attach the TrueFit mouthpiece to the Smartbrush handle. 3. Apply Feno Foam and brush for 20 seconds — the brush cleans all teeth simultaneously. 4. The device syncs data to the app, where you can view your Oral Health Score, trend charts, and personalized insights. For detailed instructions, visit the how-to-use guide.

FAQ

How is Feno different from other electric toothbrushes?

Standard brushes have about 2,500 bristles and clean one tooth at a time in 2 minutes. The Feno Smartbrush has 18,000 bristles, brushes all teeth at once in 20 seconds, and includes an oral scanner for health tracking.

How does the app provide personalized feedback?

The app tracks your brushing activity and scan results, then displays an Oral Health Score and trend graphs. It highlights areas needing extra attention and offers AI-generated tips based on your data.

Is there privacy built-in with the scanner?

Yes, the Smartbrush has a separate privacy chip that prevents remote access to the scanner. All scan data is encrypted and stored securely, and you control sharing settings in the app.

How do I know the right mouthpiece size?

Use the FitKit Scan in the Feno app. It measures your mouth arch and recommends the correct size. The process takes under a minute and only needs to be done once. Android users can request a web link from support.

Pricing

Feno offers three bundles: Founder's Edition Bundle ($299) includes Smartbrush, TrueFit mouthpiece, 3 tubes of Feno Foam, and a tongue scraper. Founder's Edition Plus ($399) adds a 1-year AI health monitoring subscription and free shipping. Elite Oral Health ($519) further includes a salivary microbiome test kit.

Pros and cons

Pros: 20-second full-mouth clean saves time; built-in scanner provides longitudinal health insights; HSA/FSA eligible with money-back guarantee. Cons: Requires foam refills (subscription); mouthpiece personalization needs a smartphone with camera; Android users lack in-app FitKit scan (must use a web link).