{"hq_id":"hq-p-bdy-000007","name":"Feminine hygiene products (tampons, pads, menstrual cups)","category":{"primary":"personal_care","secondary":"menstrual products","tags":["tampons","menstrual pads","sanitary pads","menstrual cup","dioxin tampons","PFAS tampons","fragrance pads","organic tampons","conventional tampons","panty liners","period products","menstrual product safety","tampon dioxins","sanitary napkin chemicals","organic cotton tampons"]},"product_tier":"BDY","overall_risk_level":"high","description":"Conventional feminine hygiene products — tampons, menstrual pads, panty liners — are applied to or inserted in the most absorptive mucosal tissue in the body. The vaginal mucosa has significantly higher permeability to chemical absorption than skin, with no first-pass liver metabolism for absorbed compounds — chemicals absorbed vaginally enter systemic circulation more efficiently than dermally absorbed compounds. The primary chemical concerns are: (1) dioxins and furans from chlorine bleaching of cotton and rayon in conventional products; (2) PFAS compounds, found in 2023 independent testing of multiple major tampon brands; (3) synthetic fragrances in 'scented' pads and tampons; (4) pesticide residues in non-organic cotton; and (5) carcinogenic volatile compounds in rayon (acetaldehyde, methylene chloride from the rayon manufacturing process). The FDA classifies tampons as Class II medical devices — but requires no pre-market testing for chemical migration from tampon materials into vaginal tissue, and requires no ingredient disclosure on tampon packaging. Consumers have historically had no access to ingredient information for products used monthly for decades.","synthesis":{"derived_risk_level":"low","synthesis_confidence":0.82,"synthesis_method":"compound_composition","context_used":"human_adult","context_source":"product_users","exposure_modifier":1,"vulnerability_escalated":false,"escalation_reason":null,"compounds_resolved":4,"compounds_total":4,"synthesis_date":"2026-03-27","synthesis_version":"1.0.0"},"hazard_summary":{"sensitive_populations":"pregnant women, children","overall_risk":"high","primary_concerns":["Carcinogenicity concern (high): Dioxins and Furans, PFAS, PFOA Chlorine-based bleaching of rayon and cotton generates polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) as process byproducts. A 2023 UCSF study and subsequent independent testing by Mamavation/Environmental Health News detected PFAS in tampons from multiple major brands including some marketed as 'organic.' Total organic ... Scented menstrual pads, 'fresh'-scented tampons, and deodorizing panty liners contain fragrance mixtures applied to or infused into the product."],"exposure_routes":"mucosal contact, skin contact"},"exposure":{"routes":["dermal"],"contact_types":["mucosal_contact","skin_contact"],"users":["adult"],"duration":"prolonged","frequency":"monthly_cyclical","scenarios":["Dermal contact during handling of Feminine hygiene products (tampons, pads, menstrual cups) (prolonged contact)"],"notes":"Menstrual products are used for 4–7 days per month for approximately 30–40 years of reproductive life — representing ~2,500 individual use events per person over a lifetime. Vaginal mucosa is substantially more permeable than intact skin — chemicals in contact with vaginal tissue enter systemic circulation more efficiently than dermal absorption, and without first-pass hepatic metabolism. The combination of high mucosal permeability, prolonged contact duration (4–8 hours per product use), and lifetime accumulated exposure frequency makes this a high-priority exposure pathway despite monthly rather than daily use frequency."},"consumer_guidance":{"red_flags":[{"indicator":"Scented, deodorizing, or 'fresh'-labeled menstrual products","meaning":"Synthetic fragrance in contact with vaginal or vulvar tissue is associated with contact dermatitis, vulvodynia, and microbiome disruption. ACOG recommends against scented feminine hygiene products. The fragrance conceals unknown chemical mixtures including potential endocrine disruptors. There is no demonstrated benefit from scented menstrual products — the scent does not improve hygiene and introduces additional chemical exposure.","action":"Use only unscented menstrual products. Gynecological organizations universally recommend unscented products for menstrual and intimate hygiene use."},{"indicator":"Conventional (non-organic) tampon or pad with no ingredient disclosure","meaning":"Conventional products contain rayon (chlorine-bleached, potentially dioxin-contaminated) and conventional cotton (pesticide residues) with no obligation to disclose these components. Without ingredient disclosure, consumers cannot assess PFAS presence, fragrance content, or processing chemical residues. The FDA does not require tampon ingredient disclosure — this information gap was closed only in 2024 when Congress passed the Menstrual Products Right to Know Act requiring basic ingredient disclosure.","action":"Choose certified organic cotton products with disclosed ingredients, or switch to a menstrual cup or disc."}],"green_flags":[{"indicator":"GOTS-certified organic cotton, unscented, with full ingredient disclosure","meaning":"GOTS certification covers the organic agricultural standard and processing requirements including prohibition of chlorine bleaching. Unscented eliminates fragrance concerns. Full ingredient disclosure allows verification. This combination addresses the primary chemical concerns: dioxins (from bleaching), pesticide residues (from conventional agriculture), and fragrance.","verification":"GOTS certification searchable at global-standard.org. Brands: Natracare, Organyc, Cora Organic, Rael Organic, Veeda. Verify certification number and that it covers the specific product, not just the brand."},{"indicator":"Medical-grade silicone menstrual cup with FDA 510(k) clearance","meaning":"FDA 510(k) clearance for menstrual cups requires biocompatibility testing of the silicone material — confirming the material is safe for internal mucosal contact. Medical-grade silicone with FDA clearance represents the most chemically characterized and lowest-risk option in this product category.","verification":"FDA 510(k) database search by brand name. Common cleared products: DivaCup, Lunette, Saalt, Lena Cup. Confirm 'medical-grade silicone' not 'silicone' — some cheaper cups use rubber or TPE that may be marketed as silicone-like."}],"what_to_ask":[{"question":"What are the materials in this product — cotton, rayon, synthetic fibers? Are they organic? Is the product fragrance-free? Is PFAS testing available?","why_it_matters":"Tampon and pad materials directly contact highly absorptive mucosal tissue. Conventional rayon carries dioxin concerns; conventional cotton carries pesticide residues; synthetic fragrance adds endocrine disruptors and allergens. PFAS testing results identify which specific products have detectable PFAS. This information is not required on the label — consumers must ask.","good_answer":"GOTS-certified 100% organic cotton, unscented, with published PFAS test results showing not-detected or below-detection-limit; or medical-grade silicone menstrual cup with FDA clearance.","bad_answer":"Rayon/cotton blend with no organic certification; scented or 'fresh' labeled; no ingredient disclosure; no PFAS testing information available."}],"alternatives":[{"name":"Menstrual cups","notes":"Reusable, lower TSS risk, longer wear time (12 hours)"},{"name":"Period underwear","notes":"No insertion required, washable, reduces chemical exposure"},{"name":"Cloth pads","notes":"Reusable, chemical-free, better for sensitive skin"}],"notes":null},"regulatory":{"applicable_regulations":[{"jurisdiction":"US","regulation":"FDA Class II Medical Device (21 CFR 884.5900) — Menstrual tampons","citation":null,"requirements":"Tampons are FDA Class II medical devices subject to general controls and special controls, but do not require pre-market approval (510(k) not required for conventional tampons). FDA does not require pre-market testing for chemical migration from tampon materials into vaginal tissue. The Menstrual Products Right to Know Act (enacted 2024) requires FDA to mandate ingredient disclosure on tampon and pad packaging — implementation rulemaking underway.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":"src_001"},{"jurisdiction":"EU","regulation":"EU Cosmetics Regulation 1223/2009 and REACH — restrictions on sensitizing fragrance compounds","citation":null,"requirements":"EU cosmetic regulations require disclosure of 26 fragrance allergens above threshold concentrations in leave-on products. Menstrual products in the EU are covered by the Medical Device Regulation (MDR 2017/745), which requires biocompatibility assessment of materials in contact with mucosal tissue. EU dioxin limits in pulp and paper products are substantially stricter than US guidance values.","compliance_status":null,"effective_date":null,"enforcing_agency":null,"penalties":null,"source_ref":"src_003"}],"certifications":[{"name":"FDA OTC/Cosmetic","issuer":"FDA","standard":"21 CFR Parts 700-740","scope":"Cosmetic ingredient safety, labeling requirements"},{"name":"EU Cosmetics Regulation","issuer":"European Commission","standard":"Regulation (EC) No 1223/2009","scope":"Cosmetic product safety, 1,600+ banned/restricted substances"}],"labeling":{"required_disclosures":[],"prop65_warning":{"required":null,"chemicals":[],"endpoint":null,"notes":null},"ghs_labeling":{"required":null,"signal_word":null,"pictograms":[],"hazard_statements":[],"notes":null},"hidden_ingredients":{"trade_secret_protected":null,"categories_hidden":[],"estimated_count":null,"known_concerns":null,"notes":null},"notes":null},"recalls":[],"regulatory_gap":null,"notes":null},"lifecycle":{"recyclable":false,"disposal_guidance":"Empty containers may be recyclable; do not pour chemicals down drain; check TerraCycle programs","hazardous_waste":false,"expected_lifespan":"months"},"formulation":{"form":"absorbent_material","key_ingredients":[{"hq_id":null,"name":"Rayon","role":"absorbent","concentration_pct":"40-50"},{"hq_id":null,"name":"Cotton Fibers","role":"absorbent","concentration_pct":"20-30"},{"hq_id":null,"name":"Polyethylene Terephthalate (PET)","role":"barrier","concentration_pct":"15-20"},{"hq_id":null,"name":"Adhesive","role":"binder","concentration_pct":"2-5"},{"hq_id":null,"name":"Fragrance (optional)","role":"fragrance","concentration_pct":"<1"}],"certifications":[]},"materials":{"common":[{"material_id":null,"material_name":"Rayon (viscose) — conventional tampon absorbent core","component":"absorbent core","prevalence":"very_common","notes":"Rayon (viscose) is derived from wood pulp processed through carbon disulfide and caustic soda into cellulose xanthate, then regenerated as fibers. The rayon manufacturing process uses carbon disulfide (a potent neurotoxin) and produces various chlorinated byproducts when bleached with elemental chlorine. Modern rayon manufacturing in the US uses elemental chlorine-free (ECF) or totally chlorine-free (TCF) bleaching that substantially reduces dioxin formation, but trace dioxin levels remain in some conventionally processed rayon. Rayon is the primary absorbent material in most conventional tampons — often blended 50:50 with cotton or used alone. The rayon fiber itself contributes surface area for chemical adsorption and has documented higher absorbency than cotton, a property associated with the Toxic Shock Syndrome (TSS) risk concerns of the 1980s."},{"material_id":null,"material_name":"Conventional cotton (non-organic) — tampon and pad absorbent","component":"absorbent layer","prevalence":"very_common","notes":"Conventional (non-organic) cotton carries pesticide residue concerns — cotton is one of the most heavily pesticide-treated crops globally. Glyphosate, organochlorine pesticides, and other agricultural chemicals are found at trace levels in conventional cotton. However, the bleaching and processing steps reduce (but don't eliminate) pesticide residues in the final fiber. The primary chemical conversion of conventional cotton is chlorine bleaching — which generates chlorinated byproducts including dioxins. Independent testing by the Environmental Working Group and academic researchers has detected glyphosate and other pesticide residues in conventional (non-organic) cotton tampons and pads."},{"material_id":"hq-m-str-000005","material_name":"Polyethylene / polypropylene backing layers (pads)","component":"moisture barrier and outer backing","prevalence":"very_common","notes":"Conventional menstrual pads use PE or PP outer backing layers and distribution layers. These create occlusive contact with vulvar skin for extended periods (4–8 hours per use). Polyethylene and polypropylene carry PFAS-treatment concerns in some products — PFAS coatings are used in some pad and liner products to enhance moisture barrier properties. The occlusive PE/PP back sheet also creates a warm, moist environment that increases skin penetration of any chemicals present at the tissue-product interface.","hq_id":"hq-m-str-000005"}],"concerning":[{"material_id":null,"material_name":"Dioxins and furans — chlorine bleaching byproducts","concern":"Chlorine-based bleaching of rayon and cotton generates polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) as process byproducts. Dioxins are stored in body fat and bioaccumulate over lifetime exposures; they are classified as Group 1 carcinogens (IARC) and reproductive and developmental toxicants. Modern ECF bleaching substantially reduces but does not eliminate dioxin formation. FDA testing of conventional tampons found dioxin levels 'at or near the detection limit' — but vaginal mucosal absorption at the detection limit over decades of monthly use represents meaningful cumulative exposure given the tissue's high absorptive capacity. European limits for dioxins in pulp and paper are substantially stricter than US FDA guidance.","compounds_of_concern":["hq-c-org-000009"],"source_refs":["src_001"]},{"material_id":null,"material_name":"PFAS — found in major tampon brands (2023 independent testing)","concern":"A 2023 UCSF study and subsequent independent testing by Mamavation/Environmental Health News detected PFAS in tampons from multiple major brands including some marketed as 'organic.' Total organic fluorine (TOF) screening detected PFAS presence in the cotton fiber, rayon, or cardboard applicator components. The source of PFAS in tampons is not fully characterized — it may originate from PFAS-treated agricultural water irrigation of cotton, PFAS in processing aids, PFAS-treated paperboard applicators, or cross-contamination during manufacturing. Vaginal PFAS exposure from tampons represents a non-dietary, directly mucosal PFAS pathway that has not been well-characterized in risk assessments.","compounds_of_concern":["hq-c-mix-000001","hq-c-org-000020"],"source_refs":["src_002"]},{"material_id":null,"material_name":"Synthetic fragrance in scented products","concern":"Scented menstrual pads, 'fresh'-scented tampons, and deodorizing panty liners contain fragrance mixtures applied to or infused into the product. 'Fragrance' on a feminine hygiene label conceals dozens of individual synthetic compounds, many of which are skin sensitizers, endocrine disruptors, or reproductive toxicants. Vulvar and vaginal tissue is highly sensitive to fragrance allergens — the American College of Obstetricians and Gynecologists (ACOG) recommends against scented feminine hygiene products due to risk of contact dermatitis, vulvodynia, and disruption of vaginal microbiome. The FDA does not require fragrance ingredient disclosure on tampons or pads.","compounds_of_concern":["hq-c-org-000093"],"source_refs":["src_003"]}],"preferred":[{"material_id":null,"material_name":"GOTS-certified organic cotton tampons and pads (unscented)","why_preferred":"Global Organic Textile Standard (GOTS) certified organic cotton is grown without synthetic pesticides or herbicides and processed without chlorine bleaching — using hydrogen peroxide or totally chlorine-free (TCF) methods. GOTS certification requires testing for pesticide residues, heavy metals, and prohibited dyes in the final product. Organic cotton tampons (Cora, Organyc, Natracare, Rael) consistently show lower dioxin and pesticide residue levels than conventional products in independent testing. Unscented products eliminate fragrance concerns entirely.","tradeoffs":"GOTS-certified organic tampon and pad products are more expensive than conventional alternatives (roughly 2–3×). Organic certification addresses the cotton fiber but does not necessarily certify the rayon component — products using organic cotton/rayon blends may still contain conventionally processed rayon. Fully organic cotton products (no rayon) are available from some brands."},{"material_id":null,"material_name":"Medical-grade silicone menstrual cup or disc","why_preferred":"Menstrual cups and discs made from 100% medical-grade silicone eliminate virtually all chemical exposure concerns — no bleaching, no cotton fiber, no PFAS, no fragrance. Silicone is chemically inert, non-absorptive, and FDA-cleared for menstrual use. Cups have been in use since the 1930s; the safety record over decades of use is excellent. Reusable design also eliminates monthly product waste. Medical-grade silicone (not plastic) cups from established brands (DivaCup, Lunette, Saalt) are the reference standard for chemical safety in this category.","tradeoffs":"Learning curve for insertion and removal; requires comfort with internal use; must be boiled or sterilized between cycles; not suitable for all anatomies; not available everywhere; initial cost higher than disposables over 1–2 years (lower cost long-term). Some people cannot use internal products."}]},"compound_composition":[{"hq_id":"hq-c-org-000009","compound_name":"Dioxins and Furans (PCDD/Fs)","role":"compound_of_concern","typical_concentration":null},{"hq_id":"hq-c-mix-000001","compound_name":"PFAS (Per- and Polyfluoroalkyl Substances)","role":"compound_of_concern","typical_concentration":null},{"hq_id":"hq-c-org-000020","compound_name":"PFOA (Perfluorooctanoic acid)","role":"compound_of_concern","typical_concentration":null},{"hq_id":"hq-c-org-000093","compound_name":"D-Limonene","role":"compound_of_concern","typical_concentration":null}],"identifiers":{"common_names":["feminine hygiene products","feminine hygiene product","tampons, pads, menstrual cups"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Generic Mass-Market Brand A","manufacturer":"Consumer Products Corporation","market_position":"mass_market","notable":"Widely available mass-market option"},{"brand":"Generic Mass-Market Brand B","manufacturer":"Consumer Goods Ltd","market_position":"mass_market","notable":"Popular budget alternative"},{"brand":"Premium Brand A","manufacturer":"Premium Consumer Inc","market_position":"premium","notable":"Upscale premium positioning"},{"brand":"Professional Brand","manufacturer":"Professional Products Co","market_position":"professional","notable":"Professional/salon-grade option"},{"brand":"Specialty Eco-Brand","manufacturer":"Natural Products Ltd","market_position":"premium","notable":"Sustainable/natural product line"}],"sources":[{"id":"src_001","type":"regulatory","title":"FDA — Dioxin in tampons: Questions and Answers","url":"https://www.fda.gov/medical-devices/menstrual-tampons/dioxin-tampons-questions-and-answers","accessed":"2026-03-08","year":2019,"notes":"FDA official position on dioxin in tampons; FDA testing finds dioxins 'at or near detection limits'; FDA characterizes risk as negligible; does not address cumulative lifetime vaginal mucosal exposure or PFAS concerns"},{"id":"src_002","type":"journal","title":"PFAS contamination of drinking water far more prevalent than previously reported (UCSF 2023 — tampon PFAS detection)","url":"https://www.ewg.org/news-insights/news/2023/07/researchers-find-pfas-tampons-made-organic-and-conventional-cotton","accessed":"2026-03-08","year":2023,"notes":"2023 UCSF and independent testing detecting PFAS via total organic fluorine (TOF) in tampon products including some organic-labeled products; source of PFAS not fully characterized; first systematic PFAS screening of tampon products; sparked 2024 congressional action on ingredient disclosure"},{"id":"src_003","type":"clinical","title":"ACOG Committee Opinion — Genital hygiene products: what clinicians should know","url":"https://www.acog.org/clinical/clinical-guidance/committee-opinion/articles/2020/05/feminine-hygiene-products","accessed":"2026-03-08","year":2020,"notes":"American College of Obstetricians and Gynecologists recommendation against scented feminine hygiene products; association of scented products with vulvodynia, contact dermatitis, and vaginal microbiome disruption; clinical guidance against internal vaginal deodorant use; basis for fragrance-free recommendation"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-02T18:16:08.706Z"}}