Aunt Flow Review, Is Aunt Flow Non-Toxic?
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Across 4 graded products, Aunt Flow averages Excellent (78/100). On disclosure, the brand says nothing publicly about PFAS. 4 of its products grade Good or better. Grades are model-based estimates, not lab results.
Worth buying from Aunt Flow Good or better, safest first
Aunt Flow
Tampon Applicator
cardboard tube applicator, plastic handle
Undisclosed plastic handle resin type
The plastic handle composition is not publicly detailed; if it is polystyrene or…
Adhesive or glue in handle-applicator joint
If the plastic handle is glued or chemically bonded to the cardboard tube, the adhesive…
Lower concern. MADE SAFE certified, cardboard applicator, no known PFAS use.
✓Verified PFAS-free by a third party
Aunt Flow
Regular Absorbency Tampons
Rayon/viscose, cotton, non-woven fibers
Synthetic fiber shedding or microfiber migration
Non-woven synthetic fibers in the structure could theoretically shed microscopic…
Allergens in non-woven adhesives or synthetic fibers
Acrylate-based adhesives in the applicator or synthetic fiber dyes could trigger contact…
Lower concern. Core materials are inherently PFAS-free.
⚠Risky category by default
Aunt Flow
Tampon Fragrance Free
cotton, rayon, or viscose (typical tampon fibers)
Pesticide residue
Conventional (non-organic) cotton used in typical tampon production may carry residual…
Bacterial or fungal growth from moisture retention
All absorbent fiber tampons can harbor bacterial growth if stored in humid conditions or…
Toxic shock syndrome (TSS) risk
TSS is a rare but serious condition linked to prolonged tampon use and overgrowth of…
Lower concern. Tampons are bare absorbent fibers with minimal PFAS risk.
⚠Risky category by default
Aunt Flow
Regular Absorbency Cotton Tampons
cotton, rayon, cardboard applicator
Rayon fiber shedding and microplastic aspiration
Rayon is not a plastic, but loose fibers can shed during insertion or removal. This is a…
Lower PFAS concern; cotton tampons inherently unlikely to contain PFAS.
⚠Risky category by default
Every grade uses the same public rubric. How grades work →