Secret · Deodorant
Secret Women's Clinical Strength 100HR Invisible Solid Antiperspirant Deodorant
Lower PFAS concern; typical cosmetic antiperspirant without water-resistant claims, though brand makes no explicit PFAS disclosure.
Secret's Clinical Strength deodorant is a conventional solid antiperspirant stick without advertised water-resistant, stain-resistant, or nonstick surface treatments, common vectors for PFAS in cosmetics. The brand does not disclose PFAS status either way.
Shop Secret on Amazon →Material
Starch-based or talc-based solid antiperspirant; no water-repellent or durable coating disclosed
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
cosmetics is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Secret Clinical Strength is a solid stick antiperspirant based on either starch or talc as the primary carrier, mixed with aluminum zirconium salts (the active antiperspirant agent) and waxes or silicones for texture and adherence. The lack of water-resistant or "100-hour sweat-proof" polymer coatings reduces the likelihood of PFAS (fluorinated water repellents) in the formula. Solid sticks eliminate the water and preservative-heavy systems of gels or roll-ons, lowering microbial contamination risk during storage.
The brand's record and disclosure
Procter & Gamble (Secret's parent company) does not publicly disclose PFAS content or absence in personal care products and has no official PFAS elimination commitment specific to deodorants. The brand has not faced FDA recalls or major safety actions on this product line related to heavy metal or toxicant contamination. P&G does list ingredients on packaging but does not volunteer third-party certification or extended safety testing data for deodorants.
How it compares in its category
Secret Clinical Strength sits in the mainstream mass-market segment. It is chemically simpler than gel or spray antiperspirants (which contain preservatives, propellants, and surfactants) but relies on the same aluminum zirconium salts as most competitors. Unlike talc-free alternatives marketed as sensitive formulas, this product does not claim hypoallergenic or clean-ingredient positioning, making it a conventional, middle-ground choice with no special risk premium or benefit.
If you buy it
Apply to clean, dry skin only; aluminum salts work better on moisture-free underarms and reduce irritation. Replace the stick every 6-12 months or when it becomes difficult to dispense evenly, as degraded or contaminated product increases bacterial colonization risk. Avoid applying immediately before or after shaving; aluminum can irritate fresh micro-cuts. If skin sensitivity, rash, or stinging develops, discontinue and switch to aluminum-free or hypoallergenic alternatives.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Talc or starch inhalation risk
If product is talc-based, aerosolized particles during application carry a small inhalation risk, particularly if applied in enclosed spaces or to large areas repeatedly. Cosmetic talc is required to be asbestos-free in the U.S., but safe inhalation thresholds for chronic talc exposure remain debated. Starch-based formulations eliminate this concern entirely.
Aluminum salt systemic absorption
Aluminum zirconium complexes remain on skin and are poorly absorbed; dermal penetration is minimal under normal use. However, long-term daily axillary application to large surface areas has been studied for theoretical links to breast cancer and neurological effects. Major medical organizations (American Cancer Society, FDA) have found insufficient evidence to restrict cosmetic aluminum antiperspi
Fragrance allergens and skin irritation
Secret Clinical Strength contains fragrance compounds that are not individually disclosed on the label. Common fragrance allergens (limonene, linalool, geraniol) can trigger contact dermatitis in sensitive individuals. The solid format reduces volatile organic compound (VOC) off-gassing compared to sprays but does not eliminate fragrance exposure on skin.
Heavy metals in colorants or pigments
No recalls or published safety alerts exist for Secret antiperspirants related to lead, cadmium, or other heavy metal contamination in colorants. Cosmetic-grade pigments are regulated, but independent testing of this specific product line has not been publicly disclosed.
Skin barrier disruption and irritation
Prolonged daily occlusion of the axilla with aluminum salts and wax bases can alter the skin microbiome and pH, potentially increasing sensitivity or dermatitis risk in individuals with preexisting atopic dermatitis or sensitive skin. Discontinuation usually reverses irritation within days to weeks.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 72% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
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⚠Risky category by default
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Tom's of Maine
Antiperspirant Deodorant
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✓Verified PFAS-free by a third party
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.