Meluna · Menstrual Cups
Meluna USA Colorant-Free Menstrual Cup Kit
Lower PFAS concern; medical-grade silicone menstrual cups lack typical PFAS triggers, but Meluna makes no public PFAS commitment.
Meluna's colorant-free menstrual cup is made from medical-grade silicone, a material category with lower inherent PFAS risk compared to coated or treated products. The absence of dyes, waterproofing, or nonstick treatments reduces PFAS likelihood.
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Medical-grade silicone (body); colorant-free formulation
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
Meluna's colorant-free cup is molded from medical-grade silicone, a synthetic polymer chosen specifically because it resists leaching and degradation during repeated use and sterilization. The absence of added colorants removes one common source of heavy metal pigments and synthetic dyes that can leach into body tissues. Medical-grade silicone is non-porous, non-absorbent, and chemically inert at body temperature, meaning it does not release volatile compounds or break down into microparticles under normal menstrual use. This material class has been used in implants and medical devices for decades with a strong safety record.
The brand's record and disclosure
Meluna does not publish a formal PFAS statement or third-party safety certifications on their public materials, making it difficult to verify their manufacturing or supply-chain practices. The company offers a colorant-free option, signaling some attention to chemical minimization, but does not disclose raw material sourcing, testing protocols, or certifications such as FDA clearance or ISO 10993 biocompatibility testing on their website. No major recalls or safety controversies have been publicly documented for Meluna menstrual cups. The silence on PFAS and testing transparency leaves room for independent verification if safety is a priority.
How it compares in its category
Medical-grade silicone menstrual cups are among the safest reusable menstrual products available, and Meluna is a well-established brand in that segment. Competitors such as Lunette and Saalt similarly use medical-grade silicone but some publish more detailed certifications and PFAS commitments. Latex-free, dye-free formulations reduce chemical variability compared to cups with added colorants or rubber components. Meluna's colorant-free option places it at the cautious end of the market, though the lack of public testing data makes direct comparison difficult.
If you buy it
Sterilize the cup before first use and after each cycle by boiling in water for 5-10 minutes or using a dedicated menstrual cup sterilizer; do not expose to prolonged heat above 80°C. Inspect the cup regularly for cracks, tears, or discoloration; medical-grade silicone is durable but worn seams or material stress can compromise integrity and should trigger replacement (typically every 5-10 years with proper care). Store in a breathable pouch, not airtight containers, to prevent bacterial growth. Rinse with warm water and mild soap between removals; avoid oil-based lubricants and harsh cleaners that can degrade the material surface.
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.”
Leaching from medical-grade silicone
Medical-grade silicone used in menstrual cups has not been associated with leaching of toxins into vaginal tissue in published literature or regulatory records. The material is designed to be inert and resistant to breakdown, though any damage (cracks, tears) could theoretically create pathways for particulate shedding.
Microplastic or particle release
Menstrual cup silicone can shed microscopic particles if worn, damaged, or sterilized aggressively, though the quantity and health impact remain understudied. Meluna does not publish data on particulate release under normal use, and the colorant-free formulation does not address this risk since it applies to the base resin, not added pigments.
Bacterial colonization or biofilm formation
Any reusable menstrual cup can harbor bacteria or develop biofilms if not cleaned and sterilized properly between uses. This is a maintenance risk rather than a material defect; Meluna provides basic care instructions but does not elaborate on optimal sterilization protocols or signs of microbial contamination.
Contact dermatitis or allergic sensitization from silicone
Medical-grade silicone is hypoallergenic and rarely triggers contact allergies, though individual sensitivities to the polymer or trace residues from manufacturing are theoretically possible. No recalls or adverse event reports specific to Meluna cups have been publicly documented.
Inadequate sterility or contamination during manufacturing
Meluna does not disclose whether their manufacturing facilities are ISO 13485 certified (medical device quality standard) or undergo regular third-party audits. The colorant-free formulation does not inherently guarantee sterile or contaminant-free production, and without public testing documentation, the actual microbial load at sale cannot be verified.
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.