{"hq_id":"hq-p-bdy-000110","name":"Permanent Hair Dye (Oxidative)","category":{"primary":"personal_care","secondary":"hair_color","tags":["hair dye","PPD","resorcinol","ammonia","oxidative","allergy"]},"product_tier":"BDY","overall_risk_level":"moderate_to_high","description":"Permanent oxidative hair dyes using p-phenylenediamine (PPD) or p-aminophenol as primary intermediates, hydrogen peroxide as developer, and ammonia or ethanolamine as alkalizer. PPD is the most common cause of allergic contact dermatitis from cosmetics. IARC classifies occupational exposure to hair dyes as 'probably carcinogenic' (Group 2A) — personal use classified as Group 3 (not classifiable).","synthesis":{"derived_risk_level":"low","synthesis_confidence":0.82,"synthesis_method":"compound_composition","context_used":"human_adult","context_source":"product_users","exposure_modifier":0.795,"vulnerability_escalated":false,"escalation_reason":null,"compounds_resolved":3,"compounds_total":3,"synthesis_date":"2026-03-27","synthesis_version":"1.0.0"},"hazard_summary":{"sensitive_populations":"PPD-sensitized individuals, hairdressers (occupational), pregnant women","overall_risk":"moderate_to_high","primary_concerns":["PPD allergic contact dermatitis (2-6% prevalence, potentially severe)","IARC Group 2A carcinogenicity for occupational exposure","Ammonia fume inhalation during application"],"exposure_routes":"Prolonged scalp dermal contact (30-45 min); inhalation of ammonia fumes"},"exposure":{"routes":["dermal","inhalation"],"contact_types":["skin_prolonged","inhalation"],"users":["adult","occupational"],"duration":"minutes","frequency":"monthly","scenarios":["Home application: 30-45 minute scalp contact with dye mixture","Salon workers: daily exposure handling dye chemicals (occupational)","PPD allergic reaction: blistering, edema, anaphylaxis in severe cases"],"notes":"IARC 2010: occupational hair dye exposure is Group 2A (probable carcinogen). Personal use: Group 3. PPD allergy prevalence: 2-6% general population, up to 50% in hairdressers. Patch test 48 hours before each use is recommended but rarely performed. EU bans PPD above 2% in hair dyes."},"consumer_guidance":{"usage_warning":"Always perform 48-hour patch test before each use — even if you've used the product before (sensitization can develop at any time). Use in well-ventilated area. Wear gloves. Do not use on eyebrows or eyelashes. Minimize frequency.","safer_alternatives":["Semi-permanent dye (no ammonia, no developer, lower PPD)","Henna (plant-based, no synthetic chemicals — limited color range)","PPD-free permanent dyes (use ME-PPD or PTD alternatives)"],"red_flags":[{"indicator":"Product causes skin irritation, redness, or rash","meaning":"Contact dermatitis or chemical sensitivity.","action":"Discontinue use. Choose fragrance-free, hypoallergenic alternative."}],"green_flags":[{"indicator":"EWG Verified or dermatologist-tested label","meaning":"Meets strict ingredient safety criteria.","verification":"Check EWG Skin Deep database for product rating."}],"what_to_ask":[{"question":"Is this product fragrance-free (not just unscented)?","why_it_matters":"Fragrance is the #1 cause of cosmetic contact dermatitis. Unscented may still contain masking fragrance.","good_answer":"Fragrance-free — no fragrance ingredients at all.","bad_answer":"Unscented (may contain masking fragrance)."}],"alternatives":[{"name":"Semi-permanent dye","notes":"no ammonia, no developer, lower PPD"},{"name":"Henna","notes":"plant-based, no synthetic chemicals — limited color range"},{"name":"PPD-free permanent dyes","notes":"use ME-PPD or PTD alternatives"}]},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"FDA Federal Food, Drug, and Cosmetic Act (Cosmetics)","citation":"21 U.S.C. 361-364","requirements":"Cosmetics must not be adulterated or misbranded. No pre-market approval required (except color additives). Fragrance ingredients exempt from individual disclosure.","compliance_status":null,"effective_date":null,"enforcing_agency":"FDA","penalties":null,"source_ref":null},{"jurisdiction":"EU","regulation":"EU Cosmetics Regulation (EC) No 1223/2009","citation":"EC 1223/2009","requirements":"All cosmetic ingredients must be safety-assessed before market. 1,600+ banned substances. Full ingredient disclosure required (INCI). CMR substances prohibited.","compliance_status":null,"effective_date":null,"enforcing_agency":"European Commission","penalties":null,"source_ref":null},{"jurisdiction":"USA -- California","regulation":"California Proposition 65","citation":"CA Health & Safety Code 25249.5","requirements":"Products containing listed chemicals require warnings.","compliance_status":null,"effective_date":null,"enforcing_agency":"OEHHA","penalties":null,"source_ref":null}],"certifications":[{"name":"EWG Verified","issuer":"Environmental Working Group","standard":"EWG Verified Mark","scope":"Meets EWG strictest health criteria for personal care products"}],"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":true,"disposal_guidance":"Rinse tubes, recycle. Do not pour mixed dye down drain.","hazardous_waste":false,"expected_lifespan":"months"},"formulation":{"form":"varies","key_ingredients":[{"hq_id":"hq-c-org-000539","name":"Resorcinol","role":"intermediate","concentration_pct":"0.5-3"},{"hq_id":"hq-c-ino-000013","name":"Ammonia","role":"alkalizer","concentration_pct":"1-10"},{"hq_id":"hq-c-ino-000015","name":"Hydrogen peroxide","role":"developer","concentration_pct":"3-6"}],"certifications":[]},"materials":{"common":[{"material_id":"hq-m-chm-000238","material_name":"Primary formulation for permanent hair dye (oxidative)","component":"main product","prevalence":"common","notes":"Standard personal care product formulation.","hq_id":"hq-m-chm-000238"}],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-org-000539","compound_name":null,"role":"intermediate","typical_concentration":"0.5-3%"},{"hq_id":"hq-c-ino-000013","compound_name":null,"role":"alkalizer","typical_concentration":"1-10%"},{"hq_id":"hq-c-ino-000015","compound_name":null,"role":"developer","typical_concentration":"3-6%"}],"identifiers":{"common_names":["permanent hair dye (oxidative)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"L'Oréal Paris Excellence","manufacturer":"L'Oréal","market_position":"mass_market","notable":"Mass-market at-home hair color"},{"brand":"Clairol Nice'n Easy","manufacturer":"Coty","market_position":"mass_market","notable":"Budget permanent hair color"},{"brand":"Garnier Nutrisse","manufacturer":"L'Oréal","market_position":"mass_market","notable":"Nourishing hair color with oils"},{"brand":"Madison Reed","manufacturer":"Madison Reed","market_position":"premium","notable":"Premium clean-ingredient hair color"}],"sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-25"},{"type":"regulation","title":"FDA Federal Food, Drug, and Cosmetic Act (Cosmetics) (21 U.S.C. 361-364)","jurisdiction":"USA","citation":"21 U.S.C. 361-364","id":"src_d6e8aa83"},{"type":"regulation","title":"EU Cosmetics Regulation (EC) No 1223/2009 (EC 1223/2009)","jurisdiction":"EU","citation":"EC 1223/2009","id":"src_dc378692"},{"type":"regulation","title":"California Proposition 65 (CA Health & Safety Code 25249.5)","jurisdiction":"USA -- California","citation":"CA Health & Safety Code 25249.5","id":"src_fe1d5adc"},{"id":"iarc_resorcinol_1999","type":"regulatory","title":"IARC Monographs Volume 71 1999 Resorcinol Group 3; Thyroid Peroxidase Inhibitor TPO; NIS Sodium-Iodide Symporter; Hypothyroidism Topical Exposure; EU Cosmetics Regulation 1223/2009 Hair Dye 0.5%; ECHA Endocrine Disruptor Aquatic Thyroid; RFL Resorcinol-Formaldehyde-Latex Tire Adhesion; ACGIH TLV-TWA 10 ppm Skin","year":1999,"inherited_from_compound":"hq-c-org-000539"},{"id":"atsdr_ammonia","type":"report","title":"ATSDR Toxicological Profile for Ammonia","year":2004,"inherited_from_compound":"hq-c-ino-000013"},{"id":"epa_ammonia_tox","type":"regulatory","title":"US EPA Ambient Water Quality Criteria for Ammonia (Freshwater)","year":2013,"inherited_from_compound":"hq-c-ino-000013"},{"id":"atsdr_h2o2","type":"report","title":"ATSDR Medical Management Guidelines for Hydrogen Peroxide","year":2014,"inherited_from_compound":"hq-c-ino-000015"},{"id":"cpsc_h2o2","type":"regulatory","title":"US CPSC: Hazard Assessment for High-Concentration Hydrogen Peroxide Consumer Products","year":2018,"inherited_from_compound":"hq-c-ino-000015"},{"type":"monograph","title":"International Agency for Research on Cancer (IARC)","jurisdiction":"International","id":"src_d9ebbaf2","extraction":"description_reference"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-02T18:17:57.347Z"}}