Nixit · Menstrual Cups
Nixit Menstrual Cup - 100% Medical Grade Silicone - Sealed Box W/
Lower concern; medical-grade silicone has no inherent PFAS need, but no explicit brand disclosure.
Nixit's menstrual cup is solid medical-grade silicone with no known Teflon-family coating coatings, nonstick treatments, or water-repellent finishes, the primary PFAS vectors in consumer products. The brand does not disclose PFAS testing or claims, and no independent lab data is publicly available.
Shop Nixit on Amazon →Material
Medical-grade silicone (bulk material)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
No PFAS disclosure
No public statement about PFAS in this product.
Category baseline
period care is a category where PFAS exposure is more common.
Safe base material
Made from a material with no inherent PFAS use (ceramic, mineral, or natural fiber).
The full breakdown
What it's made of and why it matters
Nixit is marketed as 100% medical-grade silicone, a high-purity polymer used in surgical implants and medical devices. Medical-grade silicone undergoes rigorous purification to remove volatile organic compounds, residual monomers, and leachable additives that lower-grade silicone may contain. This material does not require plasticizers like phthalates, flame retardants, or stabilizers that trigger leaching concerns in other intimate-product materials. The sealed packaging suggests manufacturer attention to sterility and contamination control prior to first use.
The brand's record and disclosure
Nixit does not publicly disclose third-party test results, biocompatibility certifications (e.g., ISO 10993), or material supplier chain transparency on its website or marketing materials. No recalls, safety advisories, or customer injury reports are documented in public databases (FDA adverse-event records, Consumer Product Safety Commission). The brand's silence on PFAS and other chemical testing is notable but not unusual for small menstrual-cup manufacturers; larger incumbents (DivaCup, Saalt) similarly lack granular disclosure. Absence of controversy is not equivalent to positive verification.
How it compares in its category
Menstrual cups as a category are inherently lower-risk than tampons or pads because they avoid absorbent fibers (which can harbor bacteria or chemical residues) and are reused rather than single-use. Medical-grade silicone cups (Nixit, DivaCup, Saalt) are functionally equivalent in material safety; the main differentiator is size, shape, and user comfort, not chemical hazard. Cups made from rubber, TPE, or lower-grade silicone carry higher leaching risk, but Nixit is not in that tier. Comparison shopping should focus on fit and brand customer-service responsiveness, not chemical safety.
If you buy it
Boil the cup in water for 5-10 minutes before first use to remove any residual manufacturing dust or packaging contaminants. Wash with mild soap and water after each use; do not use harsh bleach, acetone, or petroleum-based cleaners, which can degrade silicone. Replace after 5-10 years or immediately if you notice discoloration, stickiness, sticky residue, cracks, or odor that persists after washing. Store in a breathable cloth pouch (not airtight plastic) to prevent bacterial growth in damp conditions.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Silicone degradation and leaching
Medical-grade silicone is chemically stable at body temperature and normal vaginal pH; no documented cases of leaching from certified medical-grade menstrual cups. Degradation risk increases only if exposed to extreme heat (e.g., boiling for >20 minutes repeatedly) or solvents.
Bacterial contamination (maintenance-dependent)
Risk is not inherent to silicone material but to user storage and washing practices. Cups stored wet or in airtight containers can harbor bacteria; proper drying and breathable storage eliminate this risk. No product defect documented for Nixit.
Residual monomers or oligomers in silicone
Medical-grade silicone is purified to remove volatile and leachable oligomers that can trigger irritation in sensitive users. Nixit provides no independent test data confirming monomer levels, but the material class is well-established as safe for intravaginal use.
Allergic reaction to silicone or colorants
True silicone allergy is rare; however, Nixit's colored variants may use synthetic dyes or pigments not disclosed. Unpigmented or clear cups carry lower risk. Pre-existing silicone sensitivity should prompt patch-testing before full insertion.
Packaging or seal integrity
Product advertises 'sealed box' packaging, which reduces pre-purchase contamination risk. No incidents of compromised or falsified packaging reported for Nixit brand.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 78% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Menstrual Cups
Aisle
DIVA Cup Model 2
Medical-grade silicone (body); no Teflon-type coating or Teflon-family coating coatings
Lower-concern menstrual cup; silicone construction and PFAS-free commitment make it a reasonable choice.
✓Verified PFAS-free by a third party
Ruby Cup
Steriliser
Stainless steel heating chamber with silicone/plastic components
Lower-concern menstrual cup sterilizer; stainless core typical for appliances, but silicone/plastic parts unspecified, contact brand for material detail.
⚠Risky category by default
Ruby Cup
Steriliser Purple
stainless steel steriliser/heating element
Lower PFAS concern; no high-risk coatings typical of this product category.
⚠Risky category by default
More menstrual cups grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.