Ultra Thin Pads vs O.b Pro Comfort Super Plus 16 pad: which is safer?
O.b Pro Comfort Super Plus 16 pad is the clear pick. Kotex Ultra Thin Pads carries a failing PFAS grade, and we never recommend buying a failing product.
Kotex
Ultra Thin Pads
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleWaterproof backing layer (unspecified composition)
ReportedContact dermatitis and skin irritation from adhesives or cellulose
LikelyBacterial growth and toxic shock risk (usage-related)
Our pick
OB
O.b Pro Comfort Super Plus 16 pad
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleMicroplastic shedding or degradation
ReportedIrritation or allergic sensitization from adhesive or synthetic fibers
PossibleBacterial growth or contamination from prolonged moisture
Where these two actually differ
- We flag Waterproof backing layer (unspecified composition), Contact dermatitis and skin irritation from adhesives or cellulose, Bacterial growth and toxic shock risk (usage-related) and Chlorine bleaching byproducts (dioxins) in cellulose on the Kotex and not on the OB.
- We flag Microplastic shedding or degradation, Irritation or allergic sensitization from adhesive or synthetic fibers and Bacterial growth or contamination from prolonged moisture on the OB and not on the Kotex.
- The Kotex is Cellulose, cotton, adhesive, waterproof backing layer (unspecified) where the OB is rayon/viscose, cotton, and gelling polymers, which is most of the difference in these two grades.
- The gap is 45 points, wide enough that this is not a close call, and the OB is the one to buy.
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 →
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