The Thong Period. in Sporty Stretch For Light Flows vs Rubylove First Period Kit +teen Period Underwear: which is safer?
Rubylove First Period Kit +teen Period Underwear is our pick: better on PFAS and on the overall hazard picture.
The Period Company
The Thong Period. in Sporty Stretch For Light Flows
PFAS grade
Overall grade
Verdict
Hazard flags
Material
Confidence
PossibleAzo dyes and colorant toxicity
PossibleElastane (spandex) degradation and microfiber release
PossibleResidual processing chemicals on fabric
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 Azo dyes and colorant toxicity, Elastane (spandex) degradation and microfiber release and Residual processing chemicals on fabric on the The Period Company 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 The Period Company.
- The The Period Company is Organic cotton, elastane blend where the Ruby Love is organic cotton, waterproof backing layer, 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