Tom's of Maine Deodorant
Lower concern from mineral-based formula with public PFAS-free positioning, though no independent third-party verification.
Mineral salts and baking soda eliminate common PFAS application vectors like synthetic polymers or water-resistant treatments. Tom's explicitly avoids PFAS in marketing but lacks independent lab confirmation.
Brand says: “Tom's of Maine explicitly markets deodorants as PFAS-free and uses natural mineral salt and baking soda as primary active ingredients, avoiding water-resistant coatings and synthetic polymers.”
We flunk more products than we pass. This one earned its grade. How we grade
Material
mineral-based, baking soda formulation
Brand disclosure
Brand claims PFAS-free
Lab data
No public lab test
What’s concerning
Category baseline
cosmetics is a category where PFAS exposure is more common.
Fragrance allergen content
Tom's of Maine offers both fragrance-free and scented variants. Scented versions use plant-derived fragrance oils, which carry documented allergen risk (limonene, eugenol, linalool) for sensitive individuals. Fragrance is listed on labels, enabling avoidance.
Baking soda skin irritation
Sodium bicarbonate can cause localized irritation, pH imbalance, or dermatitis in individuals with sensitive skin, particularly in the underarm area. This is not a systemic toxicity concern but a contact sensitivity recognized in product reviews and dermatological literature.
Microplastic shedding
Mineral-based stick deodorants can shed particles during application, though this is primarily a cosmetic concern rather than systemic toxicity. Rinse application site after use if concerned about microparticle residue.
What’s reassuring
Safe base material
Made from ceramic, mineral, or natural fiber with no PFAS risk.
Brand-stated PFAS-free
The manufacturer claims this product contains no PFAS.
Heavy metals
No documented recalls or independent testing reports indicating lead, cadmium, or other heavy metal contamination in Tom's deodorant formulations. Mineral-based products carry theoretical risk, but this brand has not shown evidence of this hazard.
Source: FDA ↗Formaldehyde / VOCs
Typical mineral baking soda deodorants do not rely on formaldehyde-releasing preservatives. Tom's product lists are consistent with this category standard, though full preservative disclosure varies by variant.
Source: ATSDR ↗The full breakdown
What it's made of and why it matters
Tom's of Maine deodorant uses a mineral-based formula centered on baking soda (sodium bicarbonate) as the active odor-fighting agent, paired with plant-derived ingredients and mineral compounds rather than synthetic antiperspirants or aluminum salts. Baking soda is a well-established, low-toxicity substance with minimal systemic absorption through skin. The absence of talc, synthetic fragrances in some variants, and petroleum-derived polymers reduces exposure to common cosmetic contaminants like microplastics and fragrance allergens.
The brand's record and disclosure
Tom's of Maine has maintained a public PFAS-free commitment and is recognized for ingredient transparency, though independent third-party verification (such as NSF certification) is not consistently available for all product lines. The brand has not faced major FDA safety recalls or documented contamination incidents for deodorant products. However, the company is owned by Colgate-Palmolive, a larger conglomerate, which does not diminish the specific product's safety profile but reflects a typical consolidation in the natural personal care market.
How it compares in its category
Mineral-based, baking soda deodorants like Tom's rank among the lowest-chemical-load options compared to conventional antiperspirants (which use aluminum zirconium complexes) and synthetic fragrance-heavy brands. The trade-off is that baking soda can irritate sensitive skin in some users and typically offers shorter odor protection (4-6 hours vs 12-24 hours for aluminum antiperspirants). This product occupies the 'natural and transparent' segment rather than the high-performance or pharmaceutical category.
If you buy it
Apply a small amount to clean, dry skin; excess baking soda can cake or irritate if skin is damp or freshly shaved. If irritation develops (redness, rash), discontinue use, as baking soda sensitivity is documented in a subset of users. Store in a cool, dry place to prevent hardening or separation of mineral particles. Replace when product becomes discolored, develops odor, or performance declines; typical shelf life is 2-3 years unopened.
What we don’t know
- Basis
- Model estimate, 72% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Tom's of Maine has made a specific claim
Formulations change between production runs, so check the current label. How we grade.
More deodorant grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.