Is Sustain PFAS-free?
Across 8 graded products, Sustain averages B (81/100). On disclosure, the brand says nothing publicly about PFAS. 8 of its products grade C or better. Grades are model-based estimates, not lab results.
Worth buying from Sustain C or better, safest first
Sustain
Tsuno Regular Tampons
organic cotton tampon (applicator plastic)
Lower PFAS concern; verified organic cotton with MADE SAFE certification, though applicator material unspecified.
✓Verified PFAS-free by a third party
Sustain
August Organic Regular & Super Tampons
cotton, rayon; no reported waterproof or stain-resistant coating
Lower-concern choice; organic fibers and MADE SAFE stamp reduce PFAS risk significantly.
✓Verified PFAS-free by a third party
Sustain
Women's Organic Cotton Tampons
organic cotton, no reported coatings
Lower-concern choice; organic cotton core with third-party certification, but brand discloses nothing specific about PFAS.
✓Verified PFAS-free by a third party
Sustain
Cotton Tampons, 100% Natural Cotton, 16-Individually Wrapped, Unscented - Regular Absorbency, Size: 16 Count (1 Pack of 16)
100% cotton, unbleached/minimal processing
Lower concern, uncoated cotton tampons carry minimal PFAS risk typical of the category.
⚠Risky category by default
Sustain
L. Organic Cotton Tampons
organic cotton (core material); applicator type unspecified
Lower concern, organic cotton tampons are unlikely PFAS vectors, but lack transparent disclosure.
⚠Risky category by default
Sustain
Tsuno Super Tampons
cotton/rayon absorbent core, minimal synthetic components
Lower PFAS concern; standard tampon with no known problematic treatments, but brand silence on materials limits certainty.
⚠Risky category by default
Sustain
Tampons
organic cotton, rayon (viscose)
Lower PFAS concern for core materials, but brand discloses nothing about applicators or processing.
⚠Risky category by default
Sustain
August Organic Cotton Tampons
organic cotton
Lower concern; organic cotton tampons carry minimal PFAS risk, but brand offers no explicit testing or assurance.
⚠Risky category by default
Every grade uses the same public rubric. How grades work →