Does Reformation swimwear have PFAS?
Reformation swimwear averages 54 out of 100 on PFAS Authority's PFAS and toxin screen across the 8 Reformation swimwear products graded as of October 2026, level with the 54 out of 100 median for the 27 other swimwear brands graded alongside it.
Reformation swimwear averages Good on our four-band scale. None of them clear our buy threshold. That is above 61% of the swimwear brands we grade.
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.
Graded and flagged Poor and Bad, we’d swap these
Reformation
Campo Bikini Bottom
- Recycled nylon (primary); standard swimwear construction
- We found no PFAS statement from the brand
- Spandex/elastane sensitization and degradation, Spandex components in swimwear elastic can degrade under UV…
3 hazards checked on this product. See all of them.
Reformation
Joy One Piece Swimsuit
- Nylon/polyamide blend (likely nylon 6 or nylon 6,6) with elastane
- We found no PFAS statement from the brand
- Azo dyes in synthetic textiles, Nylon swimwear is commonly dyed with azo colorants. Reformation does not…
3 hazards checked on this product. See all of them.
Reformation
Posidonia One Piece Swimsuit
- Nylon/polyester blend swimsuit fabric (standard synthetic)
- We found no PFAS statement from the brand
- Heavy metals, Swimwear is dyed using standard textile azo dyes; restricted azo dyes are banned in EU and…
4 hazards checked on this product. See all of them.
Reformation
Posidonia One Piece Swimsuit | Black | Medium
- Nylon blend (primary), elastane/spandex
- We found no PFAS statement from the brand
- Azo dyes (carcinogenic residues), Black dyed nylon can retain unreacted azo dye precursors or degradation…
4 hazards checked on this product. See all of them.
Reformation
Wailea One Piece Swimsuit | Black | XL
- Nylon blend swimwear (likely nylon/spandex)
- We found no PFAS statement from the brand
- Heavy metals, Nylon swimwear requires acid or reactive dyes; some manufacturers use azo dyes or include heavy…
4 hazards checked on this product. See all of them.
Reformation
Zahara Bikini Top
- Nylon/polyamide blend, no water-resistant treatment noted
- We found no PFAS statement from the brand
- Azo dyes and colorant toxicity, Nylon swimwear is commonly dyed with azo dyes, some of which can break down…
4 hazards checked on this product. See all of them.
Reformation
Women's Rio One-Piece Swimsuit
- Nylon/spandex blend with likely water-repellent coating finish
- We found no PFAS statement from the brand
- Azo dyes or restricted colorants, Reformation does not publish dye chemistry or colorant sourcing for this…
3 hazards checked on this product. See all of them.
Reformation
Wailea One Piece Swimsuit
- Nylon blend with water-repellent coating treatment (likely PFAS-based)
- We found no PFAS statement from the brand
- Azo dyes (color fastness and allergenic potential), Nylon swimwear is typically dyed with reactive or acid…
3 hazards checked on this product. See all of them.
Better swimwear from other brands
Graded higher than the Reformation average of 54.
Patagonia
Women's Bottom Turn Racerback Bikini Top
- Nylon/polyester blend with elastane (standard swimwear)
- The brand calls it PFAS-free, which we have not verified
- Elastane (spandex) degradation under heat or chlorine
Solid & Striped
Taylor One Piece Seersucker Plaid
- Cotton/cotton-blend seersucker plaid
- We found no PFAS statement from the brand
- Azo dyes and colorfast stability
2 hazards checked on this product. See all of them.
Adidas
Women's Mexicana Florals Tie-Back Swimsuit
- Polyester/nylon swimsuit fabric, likely uncoated or standard finish
- Azo dyes and synthetic colorants
4 hazards checked on this product. See all of them.
The same question, asked of the other swimwear brands
Best average grade first. Reformation averages 54.
See every Reformation product we grade on the Reformation brand page, or the full swimwear ranking.