Period Underwear for Women - Cotton Menstrual Panties, Leak Protection (S-XXL) vs Rubylove First Period Kit +teen Period Underwear: which is safer?
Rubylove First Period Kit +teen Period Underwear is the clear pick. Rael Period Underwear for Women - Cotton Menstrual Panties, Leak Protection (S-XXL) carries a failing PFAS grade, and we never recommend buying a failing product.
Rael
Period Underwear for Women - Cotton Menstrual Panties, Leak Protection (S-XXL)
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossiblePFAS in waterproof backing layer
PossibleAzo dyes and synthetic colorants in cotton blend
PossiblePolyurethane or polyester backing degradation and microplastics
Our pick
Ruby Love
Rubylove First Period Kit +teen Period Underwear
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleCoating degradation and microparticle shedding
PossibleBacterial or fungal growth if improperly stored
Where these two actually differ
- We flag PFAS in waterproof backing layer, Azo dyes and synthetic colorants in cotton blend, Polyurethane or polyester backing degradation and microplastics and Bacterial or fungal growth if inadequately dried or maintained on the Rael and not on the Ruby Love.
- We flag Coating degradation and microparticle shedding and Bacterial or fungal growth if improperly stored on the Ruby Love and not on the Rael.
- The Rael is Cotton blend with waterproof backing layer, composition unspecified where the Ruby Love is organic cotton, waterproof backing layer, 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 Ruby Love is the one to buy.
- We are less certain about the Rael grade, at 45% confidence against 82%, 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 underwear: see the full ranking