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.









