Sustain · Tampons
Cotton Tampons, 100% Natural Cotton, 16-Individually Wrapped, Unscented - Regular Absorbency, Size: 16 Count (1 Pack of 16)
Lower concern, uncoated cotton tampons carry minimal PFAS risk typical of the category.
Sustain's 100% cotton tampons lack any Teflon-family coating or water-resistant coatings that would introduce PFAS. The brand makes no PFAS claims but product design (plain cotton, no stated treatments) aligns with lower-risk profiles.
Shop Sustain on Amazon →Material
100% cotton, unbleached/minimal processing
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
period care 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
This product is 100% cotton with minimal processing (unbleached or lightly processed), meaning no synthetic fibers, rayon blends, or chemical finishes are added. Unbleached cotton tampons carry lower chemical residue risk than conventional bleached alternatives, which historically used chlorine-based processes that can leave trace dioxins. The individual wrapping reduces contamination risk during storage and transport, and the unscented formulation eliminates fragrance compounds and potential irritants added to scented variants.
The brand's record and disclosure
Sustain is known for positioning itself as a natural/organic personal care brand, but public disclosure of third-party testing, manufacturing certifications (such as GOTS for organic cotton or independent lab verification of chemical residues), or formal safety documentation is limited in available records. The brand has not faced widely publicized recalls or safety controversies tied to this product. No documented instances of formaldehyde releasers, talc contamination, or heavy metals in pigments have been reported for Sustain tampons.
How it compares in its category
Unbleached 100% cotton tampons are considered a lower-chemical-exposure option within the tampon market, positioned above conventional bleached competitors but comparable to other certified organic or natural cotton brands. Most major tampon manufacturers (Tampax, Kotex, O.B.) use bleached rayon or cotton blends with processing chemicals; Sustain's unbleached format aligns with the growing subset of minimalist/natural-positioning brands. Individual wrapping is standard across the category and does not meaningfully differentiate safety profile.
If you buy it
Store in a cool, dry place away from moisture to prevent bacterial growth or mold. Replace the product if wrapping is damaged or shows signs of moisture exposure before use. Follow standard tampon safety practices: change every 4-8 hours to reduce toxic shock syndrome risk, and discontinue use if you experience unusual irritation or allergic reactions. No special heat handling or maintenance is required for this product.
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.”
Dioxin residues from bleaching (if present)
Unbleached cotton bypasses chlorine-based bleaching processes that historically generated trace dioxins in conventional tampons. No testing records available for this specific product, but material choice mitigates this category-level risk.
Bacterial contamination or mold growth during storage
Cotton's hygroscopic nature means moisture ingress can promote bacterial growth if product is stored in humid conditions. Risk is typical of all cotton tampons and is user-controlled through proper storage (dry environment).
Fragrance allergens or sensitizing additives
This is an unscented variant, eliminating fragrance-derived irritants and allergens (linalool, limonene, etc.) that are common in scented tampon formulations. No documented allergenic additives reported for Sustain's base formula.
Rayon or synthetic fiber contamination
Product labeling states 100% cotton; no synthetic rayon or polyester blends are listed. Cross-contamination during manufacturing is not reported as an issue for this brand.
Toxic shock syndrome (TSS) risk from prolonged use
TSS is a use-behavior hazard, not a material hazard. All tampons, including unbleached cotton, carry TSS risk if left in place longer than 4-8 hours. No evidence suggests Sustain tampons carry elevated TSS risk relative to other cotton products.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 82% 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.
Safer alternatives in Tampons
Seventh Generation
Organic Cotton Tampons Applicator
organic cotton (tampon & applicator core); cardboard applicator
Lower-concern buy, organic cotton & MADE SAFE cert reduce PFAS risk, though brand is silent on the topic.
✓Verified PFAS-free by a third party
Lola
Organic Cotton Tampons
organic cotton (no synthetic coatings)
Lower concern, uncoated organic cotton with transparent PFAS-free positioning and third-party certification.
✓Verified PFAS-free by a third party
Cora
Organic Tampons with Applicator
organic cotton tampon with cardboard/plastic applicator
Lower-concern choice; organic base material and MADE SAFE cert suggest thoughtful sourcing, but no explicit PFAS commitment.
✓Verified PFAS-free by a third party
More tampons 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.