Lead in Toothpaste: What Testing of 51 Products Found

In 2025, an independent initiative had 51 toothpastes and tooth powders tested at an accredited third-party laboratory. 90% contained detectable lead, 65% arsenic, 47% mercury, 35% cadmium. The highest results came from clay-based "natural" tooth powders — and three of the four worst were marketed for children.

That last sentence is why this article exists. As a general dentist, I care less about ranking brands than about one pattern parents deserve to see plainly: the products bought specifically to be safer for children were, in this dataset, the most contaminated category in the store — for the person least able to avoid swallowing them.

Which toothpastes tested highest for lead?

All figures are parts per billion (ppb), from the 2025 dataset (Lead Safe Mama LLC community-funded initiative, accredited third-party lab, chart dated April 11, 2025). Reporting what testing found is not a claim that any product is unsafe or non-compliant — see the caveats below.

Five products were non-detect for all four metals: Dr. Brown's Baby Toothpaste, Kids' Spry Tooth Gel with Xylitol, Pegciz Foam, Orajel Training Toothpaste, and Miessence Mint. Notice what they have in common with the worst performers: nothing about price or marketing. The dividing line runs through the ingredient list.

Why did the "natural" products test worst?

The dataset contained its own explanation — the strongest evidence in the whole study. Two raw ingredients were tested alone, with no product around them: single-ingredient calcium carbonate came back at 292 ppb lead and 274 ppb arsenic; single-ingredient hydroxyapatite at 269 ppb lead and 59 ppb arsenic. The ingredient itself — not sloppy manufacturing — is the source. Clay, chalk, and mineral powders are dug out of the ground and carry whatever the deposit carried. The rough risk ranking that falls out of the data: bentonite clay ≫ calcium carbonate ≈ hydroxyapatite > titanium dioxide > hydrated silica, which is synthesized and tested lowest.

One more inversion worth naming: organic certification does not include heavy-metal testing, and no US regulation currently caps heavy metals in toothpaste. Nobody is required to check. The marketing sells the absence of one ingredient without disclosing what replaced it.

How worried should you actually be?

Honestly: for most adults, not very — and the caveats deserve equal billing with the headline. Toothpaste is expectorated, not swallowed; a pea-sized amount is about a quarter gram and most of it leaves your mouth, so the absorbed dose is a small fraction of the measured concentration. Most products did not exceed federal limits (the highest results exceeded Washington State's stricter standards). And the testing methodology has drawn criticism from industry bodies — this is one dataset, reported with attribution, not a regulatory finding.

Children are the genuine exception, because they reliably swallow toothpaste. That's why the kids' angle leads this article, and why our practical advice below is strongest for the under-8 crowd. Also worth knowing: formulations change. These figures describe the products as tested in early 2025 — verify current labelling.

What this means for you

Skip tooth powders entirely — every catastrophic result in the study came from that category. Skip charcoal (abrasive, no cavity evidence, often the same clays). For children, the three fully clean fluoride-free options above are easy picks for the swallowing years, and any mainstream kids' fluoride paste in the right dose — rice-grain smear under 3, pea-size from 3 to 6 — is a sound choice; the amount matters more than the brand. For adults, a 1,450 ppm fluoride paste on a hydrated silica base is the cleanest common category: synthetic active, synthetic abrasive, no mined mineral anywhere in it. The full label-reading framework lives in our pillar guide: What's in Your Toothpaste? If you've been avoiding fluoride, read the honest alternative piece too: Fluoride-Free Toothpaste: What You're Getting Instead. And if the reason you switched pastes was sensitivity or receding gums, abrasiveness — not metals — is your number: the RDA article explains.

Frequently asked questions

Does Crest or Sensodyne have lead in it?

In the 2025 dataset, Crest Regular tested at 399 ppb lead and Sensodyne Extra Whitening at 116 ppb — both below the clay-powder category by an order of magnitude, and neither exceeding federal limits. Trace metals ride in with mineral ingredients like titanium dioxide. Reported findings, not a safety claim; formulations change.

What's the safest toothpaste for a toddler who swallows it?

Three products tested non-detect for lead, arsenic, mercury, and cadmium and suit the swallowing years: Dr. Brown's Baby Toothpaste, Kids' Spry Tooth Gel with Xylitol, and Orajel Training Toothpaste — all fluoride-free. Once your child can spit reliably, a mainstream fluoride paste in a pea-sized dose is the better cavity tool.

Is charcoal toothpaste bad for your teeth?

We recommend against it on two independent grounds: it's abrasive with no cavity-prevention evidence behind it, and the clay/charcoal powder category produced the worst contamination results in the 2025 testing. There's no upside it delivers that a silica-based paste doesn't.

Does "organic" toothpaste mean it was tested for heavy metals?

No. Heavy-metal testing is not part of organic certification, and no US regulation currently caps heavy metals in toothpaste. Independent labs have repeatedly found that products built on mined minerals — which many organic formulas are — carry more contamination, not less.

Educational content, not a substitute for an exam, and not a claim that any named product is unsafe or non-compliant. Source: independent third-party laboratory testing of 51 products, 2025 (Lead Safe Mama LLC initiative); methodology has industry critics; formulations change — verify current labelling.

Wondering which shelf your family's tubes came from? Bring them to your next visit — Keene or Joshua · (817) 476-4537.