Rubylove First Period Kit +teen Period Underwear vs The High Waisted Period (FlowStretch)-BLACK: which is safer?
Rubylove First Period Kit +teen Period Underwear is our pick: better on PFAS and on the overall hazard picture.
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
The Period Company
The High Waisted Period (FlowStretch)-BLACK
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleSynthetic elastane degradation and microfiber shedding
PossibleConventional cotton pesticide residues
PossibleWater-repellency treatment composition (non-PFAS)
Where these two actually differ
- We flag Coating degradation and microparticle shedding and Bacterial or fungal growth if improperly stored on the Ruby Love and not on the The Period Company.
- We flag Synthetic elastane degradation and microfiber shedding, Conventional cotton pesticide residues, Water-repellency treatment composition (non-PFAS) and Allergen potential from dyes or finishing agents on the The Period Company and not on the Ruby Love.
- The Ruby Love is organic cotton, waterproof backing layer where the The Period Company is cotton, elastane blend fabric, which is most of the difference in these two grades.
- The gap is 30 points, wide enough that this is not a close call, and the Ruby Love 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 →
More period underwear: see the full ranking