FemmyCycle · Menstrual Cups
Viv Menstrual Cup
Lower PFAS concern; medical-grade silicone menstrual cups lack typical Teflon-family coating triggers.
Viv menstrual cups are made from medical-grade silicone, a material category with lower inherent PFAS risk compared to coated or treated products. No public PFAS disclosures or third-party testing found for this brand.
Shop FemmyCycle on Amazon →Material
Medical-grade silicone (body); elastomer valve
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
The Viv cup body is constructed from medical-grade silicone, a polymer chain with silicon-oxygen backbone that does not naturally leach synthetic chemicals or break down into microplastics under normal use conditions. The elastomer valve is the secondary component most likely to degrade over time with repeated insertion/removal and exposure to menstrual fluids; silicone elastomers are generally stable but can soften if exposed to extreme heat or oil-based products. Medical-grade silicone is distinct from consumer-grade silicone kitchen tools and requires higher purity standards, reducing the likelihood of residual monomers or plasticizers. Unlike polycarbonate or polyurethane alternatives, this material does not contain bisphenols or phthalates by design.
The brand's record and disclosure
FemmyCycle does not publish detailed chemical certifications, third-party testing results, or PFAS disclosure statements on publicly available materials. The brand markets the product as medical-grade and body-safe but does not independently verify claims through organizations like FDA premarket notification or NSF certification. No recalls or documented safety incidents involving this specific product have been reported in consumer databases or regulatory filings. Limited transparency on manufacturing origin and supplier auditing is typical for smaller menstrual product brands but hampers independent verification of material purity.
How it compares in its category
Medical-grade silicone menstrual cups (Viv, Saalt, Diva Cup) occupy a safety tier above cheaper silicone alternatives and far above non-silicone options like natural rubber or unspecified thermoplastic elastomers, which carry higher leaching risk. The main competitive differentiation is not chemical safety but comfort and design; Viv's softer, more flexible construction is comparable to Saalt but firmer than some premium brands. Across the medical-grade silicone cohort, all share low documented chemical hazard profiles; meaningful differences lie in durability claims (Viv: 5-10 years) and valve integrity longevity. None of the major medical-grade brands disclose PFAS testing, making direct comparison on that axis impossible.
If you buy it
Follow the manufacturer's cleaning protocol: boil for 5-10 minutes monthly (silicone withstands 248°C / 478°F), wash with water and mild soap between uses, and avoid oil-based lubricants and harsh chemicals that degrade elastomers. Inspect the valve quarterly for visible tears, discoloration, or loss of elasticity; replace the cup if the valve becomes permanently creased or rigid. Store in the provided pouch in a cool, dry location away from direct sunlight to slow silicone degradation over its multi-year lifespan. Discontinue use if you develop irritation; while allergic reactions to medical-grade silicone are rare, individual sensitivity is possible.
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 monomer leaching (cyclic siloxanes)
Medical-grade silicone specifications aim to minimize volatile cyclic siloxanes, but published testing of Viv specifically is not publicly available. Residual oligomers theoretically possible in any silicone product if manufacturing quality control is inadequate.
Elastomer valve degradation and microparticle shedding
The elastomer valve is more prone to wear than the main silicone body and can develop micro-tears with repeated use. No documented reports of Viv valve failure causing visible silicone particles, but extended (5+ year) use may increase shedding risk.
Bacterial or mold colonization from inadequate cleaning
Menstrual cups, including silicone types, can harbor pathogenic bacteria or fungal growth if not properly boiled or dried between uses. This is a user-practice hazard, not a material defect, but critical for safety.
Allergic sensitization to silicone or valve elastomer
No established pattern of allergic reactions to medical-grade silicone menstrual cups in public safety databases. Rare individual sensitivity to silicone polymer or additives theoretically possible but not documented for this brand.
Lead or heavy metals in pigmentation (if colored variants exist)
Medical-grade silicone typically excludes heavy metal pigments, but verification for this specific brand would require independent testing. No safety alerts on record.
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.