Chlorine Free Maxi Pads vs Stayfree Pads Ultra Thin Regular Wings: which is safer?
Seventh Generation Chlorine Free Maxi Pads is the clear pick. Stayfree Pads Ultra Thin Regular Wings carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Seventh Generation
Chlorine Free Maxi Pads
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleFragrance allergen content
Stayfree Ultra Thin
Stayfree Pads Ultra Thin Regular Wings
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
LikelyPFAS in waterproof backing layer
PossibleSynthetic-fiber shedding and microplastic contact
PossibleSkin irritation from material or fragrance
Where these two actually differ
- We flag Fragrance allergen content on the Seventh Generation and not on the Stayfree Ultra Thin.
- We flag PFAS in waterproof backing layer, Synthetic-fiber shedding and microplastic contact and Skin irritation from material or fragrance on the Stayfree Ultra Thin and not on the Seventh Generation.
- The Seventh Generation is organic cotton, wood pulp where the Stayfree Ultra Thin is Nonwoven synthetic fibers with waterproof backing, coating unspecified, which is most of the difference in these two grades.
- The gap is 75 points, wide enough that this is not a close call, and the Seventh Generation is the one to buy.
- We are less certain about the Stayfree Ultra Thin grade, at 35% confidence against 78%, because it discloses less.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More period pads: see the full ranking