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FLUORIDE-FREE · SLS-FREE · LOW-ABRASION
Feno Foam Toothpaste
★★★★★
4.5
103 verified Amazon reviews
600+ bought last month
Works with any toothbrush — manual or electric
One pump expands into a dense micro-foam that spreads on contact, between teeth, along the gumline, behind the back molars, instead of sitting where you smeared it.
$24.65
3 bottles shipped every 3 months ~$0.16 a brush
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30-day money-back guarantee
Fluoride-Free
SLS-
Free
Abrasion
Xylitol
Formula
4.5 ★
103 verified Amazon reviews
600+
bought in the past month
20,000+
people brushing with Feno worldwide
WHY PEOPLE SWITCH
Made for sensitive mouths.
Loved for fresh breath.
SENSITIVE TEETH & GUMS
Gentle because of what's left out.
Most toothpastes foam with SLS and clean with abrasive particles like silica. Feno Foam has neither. It foams with sodium lauroyl sarcosinate, a milder alternative to SLS, and nothing on the label is there to scrub.
"I also love that it's SLS-free and made for sensitive teeth."
Anyeri · Verified Amazon review
FRESH BREATH
Fresh long after you rinse.
Xylitol is the second ingredient on the label, right after water: a sugar alcohol that odor-causing bacteria can't feed on. Hypochlorous acid adds antimicrobial action, and mint and menthol finish it off.
★★★★★
"Not only my teeth are clean, I smell super fresh."
Michelle · Verified Amazon review
HOW IT WORKS
Helps prevent plaque from sticking to your teeth.
Feno Foam contains EDTA, which binds the calcium in your saliva, making it harder for plaque to grab onto your teeth.
Based on how EDTA works as an ingredient. Feno Foam hasn't been clinically tested for this effect.
HOW TO USE IT
Three steps.
No learning curve.
1
Pump
One or two pumps straight onto a dry brush head. The foam holds its shape — it won't slide off on the way to your mouth.
2
Brush
Two minutes with a manual or electric brush, or twenty seconds if you're using a Feno Smartbrush. The foam keeps spreading the whole time.
3
Rinse
Rinses clean with no chalky film and nothing gritty left between your teeth. The wild mint stays a while.
1
Pump
One or two pumps straight onto a dry brush head. The foam holds its shape — it won't slide off on the way to your mouth.
2
Brush
Two minutes with a manual or electric brush, or twenty seconds if you're using a Feno Smartbrush. The foam keeps spreading the whole time.
3
Rinses clean with no chalky film and nothing gritty left between your teeth. The wild mint stays a while.
Manual, electric, or Feno Smartbrush. Feno Foam works with all of them.
You do not need any other Feno product for this toothpaste to do its job.
THE FORMULA
Xylitol in.
SLS out.
WHAT'S IN IT
+
Xylitol
A plant-based sugar alcohol that odor-causing bacteria can't feed on, helping keep your mouth's balance between brushes.
Hypochlorous acid
Vitamin E (tocopherol)
Antioxidant support for the soft tissue in your mouth.
Sodium lauroyl sarcosinate
The foaming agent that creates the micro-foam, used in place of SLS.
Wild mint & menthol
WHAT'S NOT
Sodium lauryl sulfate (SLS)
Fluoride
Left out by design, for people who've chosen to avoid it.
Abrasives
No silica, no calcium carbonate — nothing on the label is there to strip.
Added sugar
Sweetened with xylitol and sodium saccharin instead.
Parabens
Preserved with potassium sorbate instead.
WHY FOAM
Micro-foam tech designed to get into hard-to-reach places
Coverage: where the bristles touch
REGULAR TOOTHPASTE
A dab on the bristle tips
A pea of paste gets pushed around the surfaces your brush physically contacts. But most of your mouth isn't bristle-tip surface — the contact points between teeth, the gumline margin and the back of the molars are exactly where a brush struggles to reach.
Coverage: every surface the foam flows into
FENO FOAM
A foam that fills the gaps
One pump expands into a dense micro-foam the moment it leaves the bottle. It doesn't need to be dragged into place, it flows into the spaces between teeth and along the gumline, then rinses clean without the chalky film a paste leaves behind.
WHAT PEOPLE SAY ABOUT THE FOAM
4.5 stars,
103 reviews.
★★★★★
A must try if you're looking for a non-toxic formula
"I was originally attracted to its non toxic no fluoride formula but I wasn't sure how a foamy toothpaste would work out for me. And glad to say that it worked wonderfully for me, although I don't have the special electric toothbrush people usually pair it with. Another big plus for me is the mint flavor. Wow, it's strong!"
Michelle
Verified Purchase
Amazon
★★★★☆
A fresh take on toothpaste
"I wasn't sure what to expect, but I was pleasantly surprised by how easy and convenient it was to use. It was less messy than regular toothpaste. I especially liked that it didn't drip off my toothbrush and spread easily while brushing. The minty flavor was fresh and clean without being too overpowering."
★★★★★
Fresh and easy to use
"The foaming texture makes brushing feel a little different, and the mint flavor leaves my mouth feeling super fresh without being too strong. I also love that it's SLS free and made for sensitive teeth. Definitely a toothpaste I'd keep using!"
Anyeri
★★★★★
Good value
"This foaming toothpaste is a good size and lasts a long time, which makes it great value for money. The foam works really well and makes brushing feel easier and more effective. It leaves a fresh sensation in the mouth, and my teeth feel and look clean after use."
Amazon
WHO MAKES THIS
Built by a company that
rebuilt the toothbrush.
Feno Labs spent years building the Feno Smartbrush — a full-mouth device that cleans every tooth at once in twenty seconds. That device needed a toothpaste that could coat every surface instantly, and no paste on the market could do it. So they formulated one.
Feno Foam is that formula, released on its own. It was engineered for total coverage first and packaged as a toothpaste second — which is why it behaves so differently from the tube in your bathroom cabinet.
QUESTIONS
Before you
switch.
Do I need the Feno Smartbrush to use this?
No. Feno Foam works with any toothbrush — a manual brush, any electric brush, or the Feno Smartbrush. It was originally formulated for the Smartbrush, which is why it spreads the way it does, but it is a complete standalone toothpaste and most people buying it use a regular brush.
Why is it fluoride-free?
Feno Foam is built around xylitol, a natural sweetener that the bacteria behind cavities can't feed on. It works alongside fluoride, so you don't have to choose. Brush with Feno Foam and keep your fluoride rinse or the treatment your dentist gives you.
How long does one bottle last?
One bottle lasts about one month if you brush twice a day. On subscription, a new pack of 3 ships every 3 months, so you never run out.
Is it safe with veneers, crowns or braces?
Yes. Feno Foam has no harsh grit, so it's gentle on dental work. If you have new dental work or braces, check with your dentist first.
Will it whiten my teeth?
Feno Foam is made to clean, not to whiten. It has no bleach or peroxide. Brushing every day helps keep new surface stains from building up.
Can I take it on a plane?
Yes. Each bottle is 3.4 fl oz (100 ml), right at the TSA carry-on limit. Pack it with your other travel-size toiletries and you're set.
Is the mint strong?
It's a mild mint. Your mouth feels fresh after brushing, with no strong burn
No. Feno Foam works with any toothbrush — a manual brush, any electric brush, or the Feno Smartbrush. It was originally formulated for the Smartbrush, which is why it spreads the way it does, but it is a complete standalone toothpaste and most people buying it use a regular brush.
Three bottles. Three months.
Sixteen cents a brush.
Add to Cart — $29.00
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These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. Consult your dentist about what is right for your oral health.
Feno Foam Toothpaste
$29.00 · 3 bottles
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