Gums
Zinc & Myrrh
Zinc gluconate is studied for reducing gingival inflammation. Myrrh gum for anti-inflammatory and anti-plaque effects.
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Underbrush Remineralizing Gum
Most Popular
Chew better. Support stronger teeth. Freshen naturally. Comes in 2 flavors: Mint & Cinnamon
What customers report in three weeks:- Cleaner mouth
- Smoother teeth
- Fresher breath
- Better gum health
- Less sensitivity
- Natural whitening
Sale price
$29.99 USD
Regular price $49.99 USD
Taxes included.
30-day satisfaction guarantee
Chew it for three weeks. If your mouth does not feel different, send it back and we refund you.
Free shipping
Plastic-free base
Ships in 1-3 days
Chew Better. Support Stronger Teeth.
One piece, 15 to 20 minutes after a meal. Here is what that is built to do:
3 Weeks
Most customers report results within the first three weeks.
15 Min
How long to chew each piece after a meal. Longer is better.
30 Days
Satisfaction guarantee. Not for you, send it back.
Most customers report results within the first three weeks. Individual results may vary. Underbrush is designed to complement regular brushing, flossing and professional dental care, not to replace them.
AFTER EVERY MEAL
One Piece. Fifteen Minutes.
Chew 1-2 pieces after meals for at least 15 to 20 minutes, longer if you want to. Chewing through a long work day is encouraged.
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Step 1: Chew after meals
One or two pieces, right after you eat. That is when your mouth needs it most and when saliva is doing the heavy lifting anyway.
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Step 2: Give it fifteen minutes
Fifteen to twenty is the window. Unlike drugstore gum, the texture gets better the longer you chew rather than turning to plastic.
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Step 3: Keep brushing
This works between meals, alongside brushing and flossing. It is built to complement them, not to replace either one.
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Step 4: Give it three weeks
Most people notice a smoother, cleaner feel after the first piece. The change most customers write about lands around week three.
Pro tip: Keep a pack in the car and one at your desk. The habit that sticks is the one you never have to remember.
What Is Actually In It
A plastic-free chicle base, four actives doing the work, and nothing in there for the sake of the label.
Botanical
Mastic Gum
Antimicrobial. Studied for reducing salivary Streptococcus mutans, the bacteria behind plaque acid.
Sweetener
Xylitol
Studied for preventing dental caries. Oral bacteria cannot feed on it the way they feed on sugar.
Enamel
Nano-Hydroxyapatite
Chemically similar to tooth enamel itself. Studied for the remineralization of early caries.
What People Say After Three Weeks
Reviews of Underbrush Remineralizing Gum, published by the brand and used with permission.
★★★★★
The remineralizing part is working
Good high quality gum. Comparing it to store bought gums is different but it just takes some getting used to. Leaves my mouth feeling fresh and I think the remineralizing part of it is working on one of my teeth, which is the reason why I bought the gum. Would buy again.
Kenny - Verified buyer2026-06-14
Verified buyer
★★★★★
My teeth definitely felt cleaner
Very cool product! My teeth definitely felt cleaner after use. I appreciated the natural flavour, reminded me of being in the forest and was refreshing at the same time. It feels tough to chew at first but quickly becomes more chewy.
Anya P. - Verified buyer2026-06-02
Verified buyer
★★★★★
It's replaced all other gum
Finally tried after years of Instagram ads. It has been about 6-8 weeks of bi-weekly restocks and I am convinced. It has replaced all other gum, I cannot go back. Unlike cheap drugstore gum, the texture gets better the more you chew it... my teeth definitely feel cleaner after chewing!
Kristian W. - Verified buyer2026-05-21
Verified buyer
★★★★★
Chewable for a long, long time
I am really enjoying the Underbrush. As a gum lover I appreciate having a natural and beneficial option. Though the initial flavour fades pretty quickly, the texture of the gum remains remarkably chewable for a long, long time.
Lisa L. - Verified buyer2026-05-09
Verified buyer
★★★★★
Started out a skeptic
I kind of started out as a skeptic, but I have learned that I really really enjoy their gum. Ordinary gum was making my teeth hurt, but my teeth feel great with this gum!
Alli - Verified buyer2026-04-27
Verified buyer
★★★★★
Obsessed with this gum
Seriously cannot go back to the stuff I chewed before - I can now taste and feel how bad it is. Underbrush has made such a difference, I enjoy the flavours and the chew of the gum. Definitely my go to - I have the little boxes stashed everywhere!
Beth F. - Verified buyer2026-04-11
Verified buyer
★★★★★
The texture is ideal
The texture is ideal. The flavours are good and the taste after the flavour is gone is also good. I accidentally left the unopened packs in my hot car for a few days and expected them to be ruined - every piece was perfect and intact.
Ren M. - Verified buyer2026-03-30
Verified buyer
★★★★★
Ingredients I understand
Underbrush gum seems to be what it claims to be, which makes me happy. The ingredients are things that I understand. The gum tastes good and I enjoy chewing it for as long as I desire to. I like the cardboard packaging as well.
Michelle R. - Verified buyer2026-03-16
Verified buyer
Real People, Real Results
Customer videos. Some people featured received free product in exchange for their honest review.
Not The Gum In Your Bag Right Now
Ordinary sugar-free gum is a plastic base, a sweetener and a flavour. This is a chicle base carrying the minerals enamel is actually made of — and it costs more to make for exactly that reason.
Underbrush
ordinary sugar-free gum
whitening strips
The base
What you are chewingNatural chiclePlastic gum basePeroxide gel
Sweetener
What makes it taste goodXylitol & erythritolAspartame or sucraloseNone
Minerals
What it leaves behindHydroxyapatite + zincNoneNone
How long it lasts
Time per pieceBetter the longer you chewFlavour gone in 5 min30 min, 14 days straight
Sensitivity
The usual trade-offNo peroxide, no burnSugar alcohols onlyCommon side effect
What Chewing It Actually Does
Minerals and botanicals studied in oral care research, in a base you can chew for half an hour without it turning to plastic in your mouth.
Smoother in one chew
Most people report a smoother, just-brushed feel across the front teeth before the first piece is finished. That is the chicle base and the saliva flow doing the mechanical work.
Chicle base, xylitol, erythritol.Hydroxyapatite, nano and micro
Nano-hydroxyapatite is chemically similar to enamel itself, which is why it is studied for remineralizing early caries. Calcium carbonate and magnesium carbonate sit alongside it.
Peer-reviewed research cited on this page.Still fresh at 30 minutes
Ordinary gum tastes like stale breath once the flavour goes. Mastic, spruce and myrrh keep it tasting clean long after the mint has faded.
Mastic, spruce, myrrh.No peroxide
No peroxide, no tray, no fourteen-day course, and no cold-water sensitivity afterwards. It is the slow version, and it is the one you will actually keep doing.
Natural, gentle whitening.Plastic-free base
No polyvinyl acetate, no aspartame, no sucralose, no microplastics, no artificial flavours, no preservatives. Made in the USA with globally sourced ingredients.
Full ingredient list on this page.
CHEW
SOMETHING
THAT WORKS
FOR YOU
Frequently Asked Questions
What does this do that regular sugar-free gum does not?
Regular gum is a plastic base, a sweetener and a flavour. This is a natural chicle base carrying minerals and botanicals studied in oral care research — nano-hydroxyapatite, xylitol, mastic, zinc. It is designed to complement brushing and flossing between meals, not to replace them.
How long should I chew each piece?
Fifteen to twenty minutes after meals, or as long as you like through the day. Unlike drugstore gum the texture gets better the longer you chew — chewing through a long work day is encouraged.
How long until I notice anything?
Most customers report a cleaner-feeling mouth and smoother teeth after their very first piece. The change most people write about lands within the first three weeks.
Can this replace brushing and flossing?
No, and we would rather say so plainly. Underbrush is designed to complement regular brushing, flossing and professional dental care, not to replace any of them.
How many packs do I need?
One pack lasts about a week at one to two pieces a day. A four-pack is roughly a 30-day supply.
What is not in it?
No polyvinyl acetate, aspartame, butadiene styrene, sucralose, microplastics, artificial flavours, talcum powder or preservatives. No gluten, soy, dairy or artificial colours either. Made in the USA with globally sourced ingredients.
Is it safe for kids?
Yes — it is formulated to be safe for all ages. One warning that matters: xylitol is toxic to dogs. Keep this and any xylitol-containing product away from pets.
Why does it cost more than ordinary gum?
Two reasons. The premium ingredient formulation, and the natural plastic-free chicle base, which costs considerably more to produce than a conventional synthetic gum base. Backed by a 30-day satisfaction guarantee either way.