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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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 checking their gums in a bright bathroom while holding a toothbrush.

The Difference Between "Clean" and "Healthy" When It Comes to Teeth

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Feno U-shaped smart toothbrush on a wooden table as fireworks light the window.

A Simple Reset: Why Consistency Beats Starting Over

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Person pouring hydrogen peroxide mouthwash into a small cup at a stone bathroom sink.

Using Hydrogen Peroxide for Bad Breath: Safe or Risky?

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Glass bottle of blue mouthwash on a bathroom counter while a person holds another rinse.

Can Mouth Rinses Impact Blood Pressure? The Nitric Oxide Debate

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Person leaning over a bathroom sink with head down, near toothbrush and toothpaste.

When Dental Problems Feel Overwhelming: Understanding the Emotional Toll

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Gloved hand holding a panoramic dental X-ray of full upper and lower teeth against a lightbox.

Dental Anxiety and Loss of Control: How to Rebuild Trust and Take Charge of Your Care

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Toothpaste applied to a U-shaped toothbrush mouthpiece with nylon bristles on black.

Fluoride Facts: Benefits, Risks, and What Happens If You Skip It

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Person checking sore gums with a finger while holding a toothbrush in a bright bathroom.

Managing Mild Periodontitis Before It Gets Worse

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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