Aisle · Menstrual Cups
Diva Cup #1 Pre-Childbirth
Lower concern, medical-grade silicone menstrual cup; no known PFAS risk, but brand makes no disclosure.
The Diva Cup is made from medical-grade silicone, a material not typically treated with PFAS. Menstrual cups generally have no manufacturing need for water-resistance or non-stick coatings that drive PFAS use. Aisle does not publicly disclose PFAS safety testing or claims, which limits full transparency but does not suggest hidden risk.
Shop Aisle on Amazon →Material
medical-grade silicone
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 Diva Cup is molded from medical-grade silicone, a synthetic polymer chosen specifically for menstrual products because it resists degradation, does not leach plasticizers like BPA or phthalates, and tolerates repeated sterilization by boiling. Medical-grade silicone is inert at body temperature and does not off-gas volatile compounds under normal use conditions. The material has no known affinity for PFAS absorption or migration into the bloodstream.
The brand's record and disclosure
Aisle (the company behind Diva Cup) does not publicly disclose PFAS testing or manufacturing certifications on their website, which represents a transparency gap common in the menstrual product industry. No recalls, safety notices, or adverse event patterns have been recorded for Diva Cup products in available databases. The company markets the product as reusable and sustainable, positioning durability as a core claim.
How it compares in its category
Medical-grade silicone cups (Diva, Saalt, Lunette, Nixit) occupy the safest tier of menstrual products because they avoid synthetic polymer additives found in some lower-cost brands. Compared to disposable pads and tampons, menstrual cups present lower chemical exposure risk overall due to the inert nature of silicone and the absence of bleaching, adhesives, and absorbent materials. The Diva Cup is among the longest-established brands in this category with a 20-year track record.
If you buy it
Clean the cup with unscented soap and water after each use; boil it for 5-10 minutes at the start and end of each cycle to sterilize. Do not use bleach, petroleum jelly, or oil-based lubricants, which can degrade silicone over time. Replace the cup every 2-3 years or sooner if you notice discoloration, stiffness, or visible damage. Store in a breathable pouch (not sealed plastic) to prevent odor and moisture buildup.
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 (mechanical wear)
Over 5+ years of repeated insertion, removal, and boiling, silicone can lose elasticity or develop microscopic tears; risk is low but increases with age and improper cleaning. No reported bleeding or acute injury linked to Diva Cup degradation in public records.
Bacterial or fungal colonization (if maintenance lapses)
Silicone itself does not harbor pathogens, but poor rinsing, storage in a sealed container, or prolonged periods between boiling can permit microbial growth in dried menstrual residue. This is a usage fault, not a product defect.
Allergic reaction to silicone (rare)
True IgE-mediated silicone allergy is extremely rare and not documented in menstrual cup literature. Irritation complaints are typically traced to insertion technique, fit, or vaginal microbiome disruption, not the silicone itself.
Dyes or colorants in silicone mold
Diva Cup #1 Pre-Childbirth is typically clear or dark silicone; FDA-approved colorants for medical silicone are free of azo dyes and heavy metal pigments. No adverse events or leaching reported for this product line.
Fragrance or odor-masking additives
The Diva Cup contains no fragrance or antimicrobial coatings. The brand explicitly advises against scented soaps, which confirms the product itself is unscented.
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.