Original Whitening nHa Toothpaste

Plastic-free ● Fluoride-free ● SLS-Free

4.9
Rated 4.9 out of 5 stars
258 Reviews

Our signature tablet toothpaste features clean ingredients tested to be both safe and effective— including nano-Hydroxyapatite (nHa) for its remineralizing and plaque-fighting properties, as well as vitamins C + E to support periodontal health while soothing and restoring your gums. Featuring an all-natural wild mint medley flavor.

  • Naturally whitens without peroxides
  • Reduces tooth sensitivity without numbing agents
  • Dentist formulated for a healthy oral microbiome 
Your subcription will include 1 glass printed bottle that holds 62 tablets + compostable refill pouches.

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Inside the tablet

nano-hydroxyapatite (5% concentration)
remineralizes teeth
xylitol (birch extract)
promotes saliva production
calcium carbonate
natural polish
sodium bicarbonate
natural polish
cellulose
provides structure to tablets
xanthan gum
protects against dry mouth
magnesium stearate
vegetable-derived powder lubricant
hydrated silica
natural polish
menthol
cooling, soothing sensation
natural flavor
peppermint, wintergreen, spearmint
vitamin C, vitamin E
gum health

TOOTHPASTE HIGHLIGHTS

Naturally whitening
Anti-sensitivity
Sustainable + vegan
Hydrating, silky foam
Travel-friendly + mess-free
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Vegan

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SLS-Free

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Dentist Created

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Cruelty-free

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Non-Toxic

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Fluoride-free

“What you brush 
with matters.”

Tooth enamel cannot repair itself from within, which means your toothpaste has an important job to do. We packed Duo with proven ingredients like nHa to remineralize teeth and promote vibrant oral health. Developed by dentists, better for everyone.

Image sign

Dr. Stevie Roberts, DMD

Dr. Robert Johnson, DMD, MD

Clean Ingredients

Fluoride-free tablet toothpaste that strengthens & whitens teeth, reduces sensitivity without numbing agents and supports the oral microbiome.

Nano-hydroxyapatite

A dentist-backed fluoride alternative that whitens and remineralizes enamel.

Vitamins C + E

Synergistic antioxidants that support periodontal health and soothe and restore gums

How to brush with Duo tablet toothpaste

Crush a tablet between your teeth

Wet your toothbrush

Brush to activate foam

Rinse and smile

Plastic-free toothpaste made easy

Save up to 33% and lower your carbon footprint with subscription refills (in compostable pouches) delivered right on time.

Reviews

4.9
Rated 4.9 out of 5 stars
Based on 258 reviews
258 reviews
  • MC
    Melissa C.
    Verified Buyer
    Immunity
    Reviewing
    Immunity
    I recommend this product
    Rated 5 out of 5 stars
    3 minutes ago
    So impressed!

    I have been using another brand of toothpaste bits for several years. On a whim, I decided to give these a try. They are more expensive than my previous brand, but I have been converted! I love how clean my teeth feel after brushing. The foam is quite thick, but I like that it's not runny. The flavor is good. My mouth is less dry at night. Morning breath is not bad anymore. I like the texture of these better as well. They are softer and feel better on my teeth and gums. I tried a sample of the melatonin and will buy that next. I believe, after trying it three times, that it really works.

  • GB
    Gina B.
    Verified Buyer
    Immunity
    Reviewing
    Immunity
    I recommend this product
    Rated 5 out of 5 stars
    13 hours ago
    Dual purpose and very clean!

    This isn't toothpaste...it is different, so it takes a minute to get used to it. I find the taste pleasant, but most importantly, I immediately noticed how much cleaner my teeth feel. Seriously, I can tell! My teeth sometimes squeak when brushing. I'm in love with the product, the convenience for traveling (taking these on a plane for a quick refresh!). And, I love the idea of less in the landfill which has become my goal for all products I purchase in 2025.

  • GB
    Gina B.
    Verified Buyer
    Sleep
    Reviewing
    Sleep
    I recommend this product
    Rated 5 out of 5 stars
    13 hours ago
    Clean, Clean, Clean

    This isn't toothpaste...it is different, so it takes a minute to get used to it. I find the taste pleasant, but most importantly, I immediately noticed how much cleaner my teeth feel. Seriously, I can tell! My teeth sometimes squeak when brushing. I'm in love with the product, the convenience for traveling (taking these on a plane for a quick refresh!). And, I love the idea of less in the landfill which has become my goal for all products I purchase in 2025.

  • KP
    Kim P.
    Verified Buyer
    Immunity
    Reviewing
    Immunity
    I recommend this product
    Rated 5 out of 5 stars
    Yesterday
    Truly Amazed at the Results

    So I have gum disease and have had gum surgery, leaving my teeth extremely sensitive to hot/cold. I have used so many toothpastes for sensitive teeth with zero improvement. I was shocked at the results after using duo for about a week. I have almost ZERO sensitivity now. Honestly, I can hardly believe the difference. It was so dramatic I was shocked. I can't wait to go in for my next quarterly cleaning! The other thing I love is the super fresh mint flavor. I am a user for life, and I'm so grateful I found this product!

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