Upgrade Your Oral Health - HSA/FSA Eligible
1 min read

Only Buy The Feno Smartbrush from Official Channels — Watch Out for Imitation Sites

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chronic sinusitis bad breath | 5 min read

Can Chronic Sinus Issues Cause Bad Breath Even With Good Oral Hygiene?

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acid reflux tongue | 4 min read

Baking Soda and Tongue Coating: Could Silent Reflux Be the Hidden Connection?

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bad breath anxiety | 5 min read

Halitosis vs Halitophobia: Understanding the Difference Between Bad Breath and the Fear of Bad Breath

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alkaline water bad breath | 5 min read

Does Alkaline Water Help Bad Breath? What Science Actually Says

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U-shaped smart toothbrush on a charging base marked with a red FAKE ALERT stamp.
Profile silhouette with an MRI scan revealing sinus and nasal cavities behind bad breath.
White baking soda powder pouring into fizzing water, illustrating a pH-neutralizing reaction for reflux relief.
Anxious person covering mouth alone at a busy cafe, illustrating fear of bad breath.
Glowing water droplet holding a DNA helix, illustrating alkaline water and bad breath science.

Feno latest

Profile silhouette with an MRI scan revealing sinus and nasal cavities behind bad breath.

Can Chronic Sinus Issues Cause Bad Breath Even With Good Oral Hygiene?

5 min read

More in the news...

Person holds a glass of ice water while touching dry lips, illustrating persistent dry mouth.

Why Dry Mouth Persists Despite Drinking Water

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3D-rendered oral bacteria beside a golden DNA double helix illustrating genetic links to bad breath.

Is Halitosis Genetic? What Research Really Shows About Bad Breath and Your DNA

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U-shaped smart toothbrush on a bathroom counter beside medication blister pack and water glass.

Does Brushing Help H. pylori? The Oral-Gastric Connection Explained

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Smoking cigarette in ashtray beside spilled antibiotics bottle and water glass, common hairy tongue causes.

Hairy Tongue: Why Gentle Cleaning + Root Causes Matter More Than Scraping

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Spilled gummy bears, cola can, white bread sandwich, and black coffee on a wooden table.

Bad Breath From Sugar and Processed Foods: How to Fix It

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Person in a robe leaning against a foggy bathroom mirror above a sink cluttered with mouthwash and toothbrushes.

How Long-Term Bad Breath Affects Confidence (And What Actually Helps)

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Gloved hand releasing a drop from a pipette into a graduated cylinder of chemical solution.

Why Bleach Mouthwash Isn't Worth the Risk (And What Actually Works)

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Other news

Person in bed at night clutching chest, showing acid reflux discomfort that can cause bad breath.

Acid Reflux and Bad Breath: Why GERD-Related Halitosis Needs More Than Mouthwash

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Founders spotlight

Feno founder smiling while seated in a bright, modern office hallway.

We founded Feno to revolutionize dental care, understanding the vital connection between oral and overall health.

Seeing how closely our oral health ties to our overall well-health, I started Feno to use technology to make dental care smarter and keep you healthier.

Feno u shaped smart toothbrush with digital display showing the time, standing upright.

Let’s stay connected

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The Founder’s Edition Bundle:

Your Complete Oral Care Kit

Feno smart U-shaped toothbrush bundle with foam bottles, charger, and connected phone app.

1 Feno Smartbrush™

Includes the Smarthandle and Snap Charger

1 TrueFit Mouthpiece™

Sized for your comfort and dental arch

3 Tubes Feno Foam

Xylitol foaming toothpaste

1 Month Feno Plus

Oral Health Insights & Connected Dentist

Shop Now for $299