Organic Pads vs Security Lightdays Liners: which is safer?
Natracare Organic Pads is the clear pick. U by Kotex Security Lightdays Liners carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Natracare
Organic Pads
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleFragrance allergens (if scented variant)
PossibleBacterial overgrowth from prolonged wear
U by Kotex
Security Lightdays Liners
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleFluorochemicals (PFAS) in adhesive backing
PossibleFragrance allergens
PossibleAdhesive skin contact irritation
Where these two actually differ
- We flag Fragrance allergens (if scented variant) and Bacterial overgrowth from prolonged wear on the Natracare and not on the U by Kotex.
- We flag Fluorochemicals (PFAS) in adhesive backing, Fragrance allergens and Adhesive skin contact irritation on the U by Kotex and not on the Natracare.
- The gap is 40 points, wide enough that this is not a close call, and the Natracare is the one to buy.
- We are less certain about the U by Kotex grade, at 45% confidence against 100%, because it discloses less.
Both products run through the same public rubric, which covers 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 care, see the full ranking