Tom's of Maine Back to Nature Bundle
Lower-concern cosmetics with natural positioning and third-party certifications; no known PFAS risks typical of this category.
Natural cosmetic actives, mineral pigments, and plant-based ingredients exclude synthetic coatings or water-resistant treatments introducing PFAS. MADE SAFE certification screens against PFAS.
Brand says: “Tom's of Maine is committed to natural ingredients and does not use PFAS in formulations; products carry natural/organic certifications”
We flunk more products than we pass. This one earned its grade. How we grade
Material
natural cosmetic actives, mineral pigments, plant-based
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 allergens and sensitizers
Tom's of Maine Back to Nature typically includes natural essential oils and fragrance compounds; while labeled 'natural,' these can trigger contact dermatitis or allergic sensitization in individuals with fragrance sensitivities or underlying eczema.
1,4-dioxane contamination
Deodorants using certain emulsifiers or thickeners (e.g., cetyl ethoxylates) can carry trace 1,4-dioxane as a manufacturing byproduct; no specific testing of this product has been published, but risk is generally lower in formulae prioritizing botanical ingredients.
What’s reassuring
Third-party PFAS-free verification
A third party independently verified this product is PFAS-free.
Safe base material
Made from ceramic, mineral, or natural fiber with no PFAS risk.
Heavy metals
Mineral deodorants use talc or mica-based colorants; no published testing or recalls have identified lead, cadmium, or arsenic contamination in Tom's products, and the topical application and brief contact window present minimal absorption risk.
Source: FDA ↗Formaldehyde / VOCs
Tom's natural positioning and third-party certifications (Natural, Non-GMO) exclude formaldehyde donors; ingredient lists do not include imidazolidinyl urea, dmdm hydantoin, or quaternium-15.
Source: ATSDR ↗Talc-associated asbestos or respirable silica
If the product uses talc as a bulking or absorptive agent, FDA enforcement and industry testing have not flagged asbestos in recent Tom's formulations; however, consumers with talc sensitivity or those using talc-based deodorants chronically may wish to prefer mica alternatives.
The full breakdown
What it's made of and why it matters
Tom's of Maine Back to Nature uses plant-based actives (typically magnesium hydroxide or mineral salts) instead of aluminum antiperspirants, combined with natural oils and mineral pigments for texture and mild antimicrobial effect. The absence of synthetic preservatives and petroleum-derived ingredients reduces exposure to endocrine disruptors common in conventional deodorants. This formulation class avoids the aluminum absorption and neurotoxicity concerns associated with antiperspirant-strength products, though effectiveness for sweat control is lower by design.
The brand's record and disclosure
Tom's of Maine holds B Corp certification and has made explicit PFAS-free commitments across its personal care line; third-party certifications include Natural and Non-GMO Project Verified on many products. The brand has historically disclosed ingredient sourcing and manufacturing practices transparently, with no major recalls or safety violations on record for deodorant products. Parent company Colgate-Palmolive acquired Tom's in 2006 but has maintained the natural positioning and certification standards.
How it compares in its category
Natural mineral deodorants like Tom's occupy the lower-risk end of the deodorant spectrum, avoiding synthetic fragrance overload and antiperspirant aluminum while using simpler, lower-complexity ingredient lists than conventional brands. They typically trade antiperspirant potency for reduced systemic absorption and fewer chemical interactions. Within the natural deodorant category, Tom's competes fairly on transparency and certification density, though some premium brands (e.g., Schmidt's) use similar formulations with comparable safety profiles.
If you buy it
Apply to clean, dry skin; do not use on broken or irritated underarm skin, as mineral deodorants can cause minor irritation in sensitive individuals. Reapply after heavy sweating or bathing; natural formulations are water-soluble and less persistent than synthetic alternatives. If you experience redness or itching, discontinue use and test on a small area first, as some plant oils or mineral components may trigger contact dermatitis in a small subset of users. Store in a cool, dry place to prevent caking.
What we don’t know
- Basis
- Model estimate, 78% 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.