Menstrual Cups, ranked by PFAS safety
15 products graded from Bad to Excellent, safest first. 15 grade Good or better and are worth buying.
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The best non-toxic menstrual cups, ranked safest first
Worth buying Good or Excellent, safest first
Flex
Cup Starter Bundle
Medical-grade silicone, no added Teflon-family coating
Residual manufacturing compounds / silicone impurities
Limited concern
Mold or bacterial colonization from improper storage
Limited concern
Lower concern, silicone menstrual cups have minimal PFAS exposure pathways, but Flex hasn't publicly disclosed testing.
⚠Risky category by default
Flex
Menstrual Discs
Medical-grade silicone
Silicone degradation and particulate shedding
Limited concern
Allergen/irritant sensitivity to silicone additives
Limited concern
Bacterial colonization from improper cleaning
Moderate concern
Off-gassing or odor from manufacturing residues
Limited concern
Lower concern since silicone-based period product has no known PFAS risk, but brand provides no transparency.
⚠Risky category by default
Flex
Cup Menstrual Slim Pack of 1
Medical-grade silicone
Bacterial or mold colonization from poor maintenance
Limited concern
Contaminants from manufacturing residue
Limited concern
Lower-concern product since silicone menstrual cups rarely require PFAS treatments.
⚠Risky category by default
Flex
Reusable Menstrual Cup | Flex Cup Size 01
Medical-grade silicone
Bacterial or fungal colonization
Limited concern
Allergic contact dermatitis or sensitization
Limited concern
Lower PFAS concern, medical-grade silicone has no known PFAS need, but Flex doesn't publicly address it.
⚠Risky category by default
Flex
Reusable Menstrual Disc
medical-grade silicone
Bacterial or fungal contamination
Limited concern
PFAS
Limited concern
Loss of elasticity and structural failure
Moderate concern
Lower-concern choice since silicone isn't a PFAS vector, but brand offers no transparency.
⚠Risky category by default
Flex
Silicone Menstrual Cups
Medical-grade silicone (body-contact surface)
Bacterial or fungal biofilm growth on cup surface
Limited concern
Surface degradation or discoloration over extended use
Moderate concern
PFAS
Limited concern
Lower-concern product since silicone cups don't require PFAS-prone treatments, but manufacturer silence on sourcing limits full confidence.
⚠Risky category by default
Saalt
Menstrual Cup Saalt
Medical-grade silicone
Bacterial and fungal growth
Limited concern
Allergic reaction to silicone
Limited concern
Lower PFAS concern since silicone menstrual cups aren't typical PFAS carriers, but Saalt doesn't disclose.
⚠Risky category by default
Saalt
Menstrual Cup Twin Pack
Medical-grade silicone (primary); no reported coatings
Silicone degradation over time
Limited concern
Bacterial or mold growth from storage
Limited concern
Allergic reaction to silicone or additives
Limited concern
Vaginal irritation from improper fit or insertion
Limited concern
Lower PFAS concern since silicone cups aren't typical PFAS vectors, but brand discloses nothing.
⚠Risky category by default
Saalt
Package Free Shop Soft Menstrual Cup Duo Pack
Medical-grade silicone
Heavy metals
Limited concern
Bacterial growth or biofilm if poorly maintained
Limited concern
Incomplete disclosure of coating lubricants or release agents
Limited concern
Lower PFAS concern due to silicone, but brand transparency on PFAS is absent.
⚠Risky category by default
Lena
Menstrual Cup - Large-Pink
Medical-grade silicone
Bacterial or mold colonization from improper storage or cleaning
Limited concern
Allergic contact dermatitis or vulvovaginal irritation from silicone or additives
Limited concern
Surface degradation and microsilicone particle shedding over time
Limited concern
Incomplete removal or retention of cup fluid
Limited concern
Lower PFAS concern, silicone cups aren't a typical PFAS vector, but brand transparency is absent.
⚠Risky category by default
Lena
Menstrual Cup
Medical-grade silicone (primary); no reported Teflon-family coating or Teflon-type coating
Bacterial colonization or biofilm growth
Limited concern
Allergic reaction to silicone or colorants
Moderate concern
Degradation from improper cleaning or storage
Limited concern
Lower-concern choice since menstrual cup category has minimal PFAS risk, but brand offers no statement.
⚠Risky category by default
Lena
Sensitive Menstrual Cup
Medical-grade silicone (body); no disclosed coatings
Bacterial or mold colonization
Limited concern
Allergic contact dermatitis or sensitization
Limited concern
Incomplete sterilization if boiled improperly
Limited concern
Lower-concern product, medical-grade silicone isn't a known PFAS vector, but brand offers no transparency.
⚠Risky category by default
Diva Cup
#1 Pre-Childbirth
Medical-grade silicone (body); no reported coatings or treatments
Biofilm and bacterial growth (maintenance-dependent)
Limited concern
Degradation due to heat or chemical exposure
Moderate concern
Allergic sensitization to silicone or additives
Limited concern
Loss of seal or structural integrity over time
Moderate concern
Lower PFAS concern since silicone menstrual cups rarely need fluorinated treatments, but no explicit brand disclosure.
⚠Risky category by default
Diva Cup
Model 2
Medical-grade silicone (body); no Teflon-family coating coatings reported
Silicone degradation and surface microtearing
Limited concern
Bacterial biofilm formation if improperly maintained
Moderate concern
Vaginal or cervical trauma from improper use
Limited concern
Lower PFAS concern, medical-grade silicone is a safer material class, but brand offers no transparency.
⚠Risky category by default
Flex
Menstrual Cup
Medical-grade silicone
Silicone degradation and particle shedding
Limited concern
Microbial contamination (bacterial or fungal growth)
Limited concern
Lower PFAS concern since menstrual cups have no functional PFAS need, but Flex doesn't publicly disclose sourcing or testing.
⚠Risky category by default
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