Aunt Flow Review, Is Aunt Flow Non-Toxic?
Aunt Flow averages 95 out of 100 on PFAS Authority's PFAS and toxin screen across the 4 Aunt Flow products graded as of October 2026, and all 4 reach its 70 point pass mark.
Aunt Flow grades Excellent on our four-band scale. On disclosure, the brand claims its products are PFAS-free (self-declared). See what every brand has published about PFAS for how that compares.
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.
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Does Aunt Flow have PFAS, by category
Which Aunt Flow products are PFAS-free? Good or better, best-graded first
- cotton, rayon, cardboard applicator
- The brand calls it PFAS-free, which we have not verified
- Cardboard applicator degradation and splinter risk. Cardboard can soften or fragment if exposed to moisture…
- cardboard tube applicator, plastic handle
- The brand calls it PFAS-free, which we have not verified
- Contamination from unsterilized or improperly manufactured plastic handle. While no recalls exist, plastic…
- cotton, rayon, or viscose (typical tampon fibers)
- The brand calls it PFAS-free, which we have not verified
- Formaldehyde / VOCs. Cotton and rayon production may involve formaldehyde-based resins for wrinkle resistance…
2 hazards checked on this product, all on its full breakdown.
- Rayon/viscose, cotton, non-woven fibers
- The brand calls it PFAS-free, which we have not verified
- Pesticide residue. Non-organic cotton used in tampons may carry trace pesticide residues from cultivation.…
3 hazards checked on this product, all on its full breakdown.
What to buy instead Good or better, in the categories Aunt Flow sells
- 100% organic cotton
- A third party reports verifying it as PFAS-free
- Heavy metals
Natracare
Organic Super Plus Tampons, 3 x 20 ct
- organic cotton, cardboard applicator
- The brand calls it PFAS-free, which we have not verified
- Dioxins from bleaching
Natracare
Organic Cotton Super Plus Tampons
- organic cotton, no added fluorochemicals
- The brand calls it PFAS-free, which we have not verified
- Verified PFAS-free by a third party
Aunt Flow and PFAS, common questions
- Does Aunt Flow have PFAS?
- Aunt Flow averages 95 out of 100 on PFAS Authority's PFAS and toxin screen across the 4 Aunt Flow products graded as of October 2026, and all 4 reach its 70 point pass mark. Grades are model-based estimates built from published materials, ingredients and disclosures, not lab tests.
- Is Aunt Flow non-toxic?
- Aunt Flow Regular Absorbency Cotton Tampons is the highest-graded Aunt Flow product we have scored, at 95/100. It depends on the product line rather than the brand, so check the grade of the exact item you are buying.
- Which Aunt Flow products are lower concern for PFAS?
- The highest-graded Aunt Flow products we have scored are Aunt Flow Regular Absorbency Cotton Tampons, Aunt Flow Tampon Applicator, Aunt Flow Tampon Fragrance Free. That is our model-based estimate from materials and public disclosure, not a lab test.
Every grade uses the same public rubric. How grades work →