Upgrade Your Oral Health - HSA/FSA Eligible
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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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Baking Soda and Tongue Coating: Could Silent Reflux Be the Hidden Connection?

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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...

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Your Tooth Infection Could Spread to Your Brain. Here's When to Stop Waiting

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The Hidden Way Dental Shame Is Destroying Your Oral Health And Your Overall Health

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The Mouth Infection Your Cardiologist Hopes You're Already Treating

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Gloved dentist points to a dark abscess near a molar root on a dental X-ray.

The Tooth Infection That Quietly Threatens Your Heart

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Tongue running across teeth to check for the fuzzy plaque feeling after brushing.

That Fuzzy Feeling on Your Teeth Could Be Bacteria Building Toward Something Worse

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Dusty neglected toothbrush in a dim bathroom as a downcast person struggles to brush their teeth.

Why Ignoring Brushing Struggles Is Quietly Destroying Your Teeth and Gums

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Nightstand with a clear night guard, ibuprofen, and pain relievers beside a person clutching their jaw in bed.

Your Mouth Might Be Warning You About Stress Before Your Brain Does

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Feno smart toothbrush base, U-shaped mouthpiece, foam bottles, and app on a bright bathroom counter.

Your Toothpaste Tastes Sweet. But Do You Know What It's Actually Doing to Your Teeth?

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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