By Alexander Angeloff, founder of TranscenDental. Educational content, not a substitute for advice from your dentist.
More people are searching for the best fluoride-free toothpaste every year, but "fluoride-free" on its own tells you very little. Some fluoride-free toothpastes contain an ingredient with clinical evidence for preventing cavities. Others simply leave fluoride out and put nothing in its place.
This guide explains the difference, what the research says, and how to choose a fluoride-free toothpaste that still protects your teeth.
Quick answer: the best fluoride-free toothpaste replaces fluoride with an evidence-based remineralizing ingredient, ideally hydroxyapatite, and is also low in abrasion, free of SLS and built with ingredients that support the gums and the oral microbiome.
What I brush with every day
Is fluoride-free toothpaste good?
It depends entirely on what's in it. Fluoride works: decades of research show fluoride toothpaste reduces cavities, which is why the American Dental Association recommends it. A fluoride-free toothpaste that offers nothing in its place cleans your teeth but gives up that protection.
A fluoride-free toothpaste with hydroxyapatite is a different story. In two double-blind randomized trials, hydroxyapatite toothpaste performed about as well as fluoride toothpaste:
- Children, about one year: 207 children used either a hydroxyapatite toothpaste or a fluoride toothpaste. Caries progression was similar in both groups (72.7% vs 74.2%), and the hydroxyapatite paste met the trial's non-inferiority standard. (Paszynska et al., Scientific Reports, 2021)
- Adults, 18 months: 189 adults used either a hydroxyapatite toothpaste or a 1,450 ppm fluoride toothpaste. Most people in both groups had no new decay (89.3% vs 87.4%), and hydroxyapatite was not inferior to fluoride. (Paszynska et al., Frontiers in Public Health, 2023)
So fluoride-free toothpaste isn't automatically good or bad. Fluoride-free toothpaste with an effective replacement is a reasonable, evidence-supported choice for most people. For the full head-to-head, read hydroxyapatite vs fluoride.
Why people choose fluoride-free toothpaste
- They want to limit total fluoride intake, especially if their tap water is already fluoridated.
- Swallowing. Young children swallow toothpaste, and some adults simply don't want to rinse and spit a substance they wouldn't eat. Hydroxyapatite is the same mineral your teeth are made of; read more in is nano-hydroxyapatite toothpaste safe?
- A preference for minimal, natural ingredients across everything they put on or in their body.
- Sensitivity to other ingredients that often come with conventional pastes, such as SLS, strong flavorings or dyes. Some people with perioral dermatitis are advised by their dermatologist to try fluoride-free toothpaste.
- Dental fluorosis concerns for young children whose teeth are still forming.
What replaces fluoride (and how strong the evidence is)
Hydroxyapatite: the strongest fluoride alternative
Hydroxyapatite (HA) is the calcium phosphate mineral that makes up most of your tooth enamel. In toothpaste, it fills microscopic defects in enamel, helps remineralize early weak spots and blocks the tiny tubules that cause sensitivity. Nano-hydroxyapatite uses smaller particles for closer contact with the tooth surface. It has the best clinical evidence of any fluoride alternative, including the trials above. Our nano-hydroxyapatite toothpaste guide covers how it works, and this comparison shows how brands differ on concentration and price.
Theobromine: promising, earlier-stage
Theobromine is a compound from cacao. Lab studies suggest it can help enamel crystals grow and harden, and it's being studied as a fluoride alternative. The human evidence is earlier-stage than for hydroxyapatite, so we see it as a complement rather than a stand-alone replacement. More in theobromine toothpaste: the science.
Xylitol: supports, doesn't remineralize
Xylitol is a natural sweetener that the cavity-causing bacteria Streptococcus mutans can't ferment, so it doesn't feed decay. It's a useful supporting ingredient, but it doesn't rebuild enamel on its own. See xylitol toothpaste benefits.
Baking soda, calcium carbonate and clays: cleaning, not protection
These clean and polish, and baking soda helps neutralize acid. They're good to have in a fluoride-free toothpaste, but none of them replaces what fluoride does for enamel.
How to choose a fluoride-free toothpaste: a 6-point checklist
- A remineralizing ingredient. Look for hydroxyapatite on the label, and check whether the brand states the percentage.
- Low abrasion. Fluoride-free should not mean harsher. Avoid gritty "detox" pastes, especially if you have receding gums or sensitive teeth.
- No SLS. Sodium lauryl sulfate is a foaming detergent that can irritate oral tissue. See why we skip SLS.
- No glycerin heavy base if you can help it. Glycerin is harmless to swallow, but some formulators believe a heavy glycerin coating may slow remineralization; the evidence is limited, so treat this as a preference rather than a rule.
- Ingredients that support gums, not just teeth, such as hyaluronic acid or soothing botanicals. Gum disease is a leading cause of tooth loss in adults.
- A transparent label. Full ingredient list, stated active percentages and no vague "proprietary blend" for the key actives.
What I brush with every day
10% nano-hydroxyapatite, organic birch xylitol and 2% theobromine in a probiotic herbal ferment. No fluoride, SLS or glycerin.
Types of fluoride-free toothpaste compared
| Type | Main active | Evidence for cavity protection | Best for |
|---|---|---|---|
| Hydroxyapatite toothpaste (e.g. Boka, Risewell, Dr. Jen, TranscenDental) | Nano or micro hydroxyapatite | Strongest: randomized trials show non-inferiority to fluoride | Most people switching from fluoride, sensitivity, kids |
| Theobromine toothpaste | Cacao-derived theobromine | Promising lab data, limited human trials | As a complement to hydroxyapatite |
| Xylitol-based toothpaste | Xylitol | Supportive; reduces cavity bacteria but doesn't remineralize | Plaque control alongside an active |
| Basic natural toothpaste | Baking soda, calcium carbonate, clay, herbs | Cleans well; no remineralizing active | Low cavity risk, simple routines |
Widely available fluoride-free options, such as the fluoride-free lines from Tom's of Maine and hello, are easy to find in stores. Before buying any of them, check the label for a remineralizing ingredient using the checklist above.
Best fluoride-free toothpaste by need
For sensitive teeth
Choose hydroxyapatite. It helps seal the open tubules that let cold reach the nerve, which is the same approach stannous fluoride and arginine take in conventional sensitivity pastes. Keep abrasion low.
For whitening
A fluoride-free whitening toothpaste should polish stains gently rather than scrub. Hydroxyapatite also fills microscopic surface defects, which can make teeth look smoother and brighter. Avoid charcoal pastes; we explain why in best natural whitening toothpaste.
For gums and recession
Look for low abrasion plus ingredients that support gum tissue, such as hyaluronic acid. Our guide to the best toothpaste for receding gums goes deeper.
For kids
Hydroxyapatite is the main fluoride-free option with trial data in children, and it's safe if swallowed. Many pediatric dentists still recommend a small smear of fluoride toothpaste, so make this choice with your child's dentist, especially if they've had cavities.
SLS-free and fluoride-free
Many people want both. Check the label for "sodium lauryl sulfate" and "sodium laureth sulfate," and favor pastes that use gentle cleansers or none at all.
How we built ours
We designed TranscenDental toothpaste to meet every point on that checklist:
- 10% nano-hydroxyapatite in two particle sizes (60nm and 200nm), the concentration the EU's scientific safety committee considers safe in toothpaste
- 2% theobromine from cacao as a complementary enamel support
- Organic birch xylitol as the second ingredient
- Hyaluronic acid, glutathione, vitamin E, black cumin seed oil, gotu kola and comfrey for the gums
- A probiotic herbal ferment of clove, rosemary and sage
- No fluoride, SLS, glycerin, silica or charcoal
It comes in a 60g glass jar instead of a plastic tube.
Who should talk to a dentist before going fluoride-free
- People who get cavities often, or have many fillings
- Anyone with dry mouth from medications, radiation or Sjögren's
- People with braces, which make plaque harder to remove
- Children with existing decay
For these groups, fluoride (sometimes prescription-strength) may still be the right call, or hydroxyapatite may be used alongside it. A dentist who knows your history can help you decide.
Build the full routine: brush with TranscenDental toothpaste, clean between your teeth with our plastic-free bamboo floss, and finish after meals with an Ora Flora xylitol mint (about 3 g of organic birch xylitol each, no gum base or artificial sweeteners). Or get all three together in the Oral Care Trio and save $12.
Frequently asked questions
Is fluoride-free toothpaste good for you?
It can be, if it contains an effective replacement like hydroxyapatite. Fluoride-free toothpaste without a remineralizing ingredient cleans teeth but offers less protection against cavities.
Does fluoride-free toothpaste prevent cavities?
Fluoride-free toothpaste with hydroxyapatite has been shown in randomized trials to prevent cavities about as well as fluoride toothpaste in both children and adults. Fluoride-free pastes without an active ingredient haven't shown that.
Is fluoride-free toothpaste bad for your teeth?
Not if you choose well. The risk comes from fluoride-free toothpastes that leave out any remineralizing ingredient, or that are highly abrasive.
Should I use fluoride-free toothpaste?
If you have low to moderate cavity risk and want to avoid fluoride, a hydroxyapatite toothpaste is a reasonable choice. If you get cavities often, talk to your dentist first.
Is fluoride-free toothpaste OK for kids and infants?
Hydroxyapatite toothpaste is safe if swallowed and has trial data in children. Many pediatric dentists still recommend a smear of fluoride toothpaste from the first tooth, so discuss it with your child's dentist.
Is fluoride-free toothpaste safe during pregnancy?
Hydroxyapatite and the other ingredients common in fluoride-free toothpaste are generally considered safe. Gums are often more sensitive during pregnancy, so a gentle, SLS-free paste is a good fit. Check with your dentist or midwife if you have concerns.
What is the best fluoride-free toothpaste for adults?
Look for a clearly stated percentage of hydroxyapatite, low abrasion, no SLS and gum-supporting ingredients. That's the formula behind TranscenDental, and our natural toothpaste guide covers what else to look for.
What I brush with every day
10% nano-hydroxyapatite, organic birch xylitol and 2% theobromine in a probiotic herbal ferment. No fluoride, SLS or glycerin.
