Nixit · Menstrual Cups
nixit Menstrual Disc Ultra-soft Reusable Suction-free Teal 2 Pack
Lower concern, silicone reusable disc with no apparent PFAS-prone features, but brand offers no transparency.
Nixit's menstrual disc is made from medical-grade silicone, a material not typically associated with PFAS. The product requires no waterproof coatings, nonstick treatments, or stain resistance that would raise red flags.
Shop Nixit on Amazon →Material
Medical-grade silicone (primary); no coating disclosed
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Category baseline
period care is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
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 Ultra-soft is constructed from medical-grade silicone, the same material standard in FDA-cleared menstrual cups and intrauterine devices. Silicone is a synthetic polymer with high thermal stability and chemical inertness, meaning it does not leach estrogenic compounds or heavy metals under normal body conditions. The "ultra-soft" designation suggests a lower durometer (softer compound), which improves comfort but does not introduce new toxicological risk, medical-grade silicone formulations are regulated identically regardless of hardness.
The brand's record and disclosure
Nixit provides minimal transparency beyond material declaration; no third-party testing, heavy metals screening, or migration studies are publicly available on their website. The company does not disclose manufacturing certifications (ISO 10993 biocompatibility, USP Class VI), which is unusual for a product in sustained vaginal contact. No recalls, safety alerts, or adverse event patterns specific to Nixit are documented in FDA databases or independent safety registries as of available records.
How it compares in its category
Menstrual discs occupy a narrower safety-test footprint than cups because fewer brands publish biocompatibility data; Nixit's silence matches market norm but trails transparent competitors like Saalt and Lily Cup Compact, which cite ISO 10993 compliance. The suction-free design reduces mechanical injury risk versus traditional cups, a functional safety advantage. Medical-grade silicone in this category is well-established; material risk is lower than in budget plastic alternatives or undisclosed elastomer blends.
If you buy it
Wash thoroughly with fragrance-free soap and hot water before first use and between cycles; store in a breathable container (not sealed plastic). Avoid oils, glycerin-based lubricants, and silicone-based lubricants, which can degrade the material over years of use. Replace every 5-10 years if visible tears, stickiness, or odor develop despite cleaning. Do not boil; if sterilization is needed, use a menstrual-cup sterilizer cup or 70% isopropyl alcohol wipe.
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 particulate shedding
Medical-grade silicone is stable under normal use, but repeated friction, oils, or hot disinfectants can cause micro-tear initiation. No reported cases of silicone particulate ingestion from menstrual discs exist in literature, but routine inspection and replacement on schedule mitigates this low theoretical risk.
Bacterial biofilm growth if improperly stored
All reusable menstrual products harbor bacteria if stored wet or in sealed containers. Nixit carries standard risk; prevention requires air-dry storage in a breathable pouch and weekly washing with hot water, not daily insertion without cleaning between cycles.
Heavy metals (lead, cadmium, mercury) in silicone compound
Medical-grade silicone is not inherently prone to heavy metal contamination. Nixit does not publish heavy metals testing; absent disclosure, no evidence of lead or cadmium migration has emerged in independent reports or complaints.
Vaginal irritation from non-disclosed additives or residual monomers
Uncrosslinked silicone oligomers (cyclic dimethyl siloxanes) can leach from poorly cured medical silicone. Nixit does not disclose curing or oligomer limits; medical-grade formulations are typically compliant with USP <660> limits, but third-party verification is absent.
Allergic sensitization to silicone (rare)
True IgE-mediated silicone allergy is exceptionally rare and not documented in menstrual disc users. Contact dermatitis from silicone itself is not established; reactions are typically to residual manufacturing residues or personal lubricants, not the polymer.
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.