High Waist Period Underwear vs Rubylove First Period Kit +teen Period Underwear: which is safer?
Rubylove First Period Kit +teen Period Underwear is the clear pick. hannahSENSE High Waist Period Underwear carries a failing PFAS grade, and we never recommend buying a failing product.
hannahSENSE
High Waist Period Underwear
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleUndisclosed coating chemicals (likely PFAS or alternatives)
PossibleCoating degradation and microparticle shedding
PossibleSkin irritation from coating materials or residues
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 Undisclosed coating chemicals (likely PFAS or alternatives) and Skin irritation from coating materials or residues on the hannahSENSE and not on the Ruby Love.
- We flag Bacterial or fungal growth if improperly stored on the Ruby Love and not on the hannahSENSE.
- Both carry a flag for Coating degradation and microparticle shedding, so neither choice avoids it.
- The hannahSENSE is organic cotton blend with waterproof coating 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 hannahSENSE 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