Diva Cup Review, Is Diva Cup Non-Toxic?
PFAS Authority is a scoring system, not a laboratory. We do not test products ourselves. Grades are model-based, built from published ingredients, materials, certifications, brand disclosures and third-party lab results where they exist. See the rubric.
Across 2 graded products, Diva Cup averages Good (70/100). On disclosure, the brand says nothing publicly about PFAS. 2 of its products grade Good or better. Grades are model-based estimates, not lab results.
Worth buying from Diva Cup Good or better, safest first
Diva Cup
#1 Pre-Childbirth
Medical-grade silicone (body); no reported coatings or treatments
Biofilm and bacterial growth (maintenance-dependent)
Silicone itself is biologically inert, but menstrual cups create a warm, moist internal…
Degradation due to heat or chemical exposure
Boiling at standard sterilization temperatures (100°C) is safe, but prolonged exposure to…
Allergic sensitization to silicone or additives
Allergic reactions to medical-grade silicone are extremely rare but documented in the…
Loss of seal or structural integrity over time
Users have reported cup degradation after years of use, including loss of flexibility or…
Lower PFAS concern since silicone menstrual cups rarely need fluorinated treatments, but no explicit brand disclosure.
⚠Risky category by default
Diva Cup
Model 2
Medical-grade silicone (body); no Teflon-family coating coatings reported
Silicone degradation and surface microtearing
Medical-grade silicone is durable but can develop microscopic surface tears or stress…
Bacterial biofilm formation if improperly maintained
Any reusable internal menstrual device carries theoretical risk of pathogenic bacterial…
Vaginal or cervical trauma from improper use
This is a user-technique issue rather than a material hazard; overly firm insertion…
Lower PFAS concern, medical-grade silicone is a safer material class, but brand offers no transparency.
⚠Risky category by default
Every grade uses the same public rubric. How grades work →