{"hq_id":"hq-p-spe-000057","name":"Tattoo Ink (Intradermal Pigments and Carriers)","category":{"primary":"specialty","secondary":"cosmetic","tags":["tattoo ink","heavy metals","PAH","azo dye","pigment","intradermal"]},"product_tier":"SPE","overall_risk_level":"moderate","description":"Tattoo inks injected intradermally, permanently depositing pigments in the dermis. Inks contain metal-based pigments (iron oxide, chromium oxide, cadmium, cobalt, mercury), organic azo dyes, and carrier fluids. FDA does not regulate tattoo ink pigments pre-market. PAHs have been found in black inks. Azo dyes can decompose under UV light releasing carcinogenic aromatic amines.","synthesis":{"derived_risk_level":"low","synthesis_confidence":0.744,"synthesis_method":"compound_composition","context_used":"human_adult","context_source":"product_users","exposure_modifier":0.882,"vulnerability_escalated":false,"escalation_reason":null,"compounds_resolved":3,"compounds_total":3,"synthesis_date":"2026-05-09","synthesis_version":"1.2.0","methodology_note":"exposure_modifier and adjusted_magnitude are computed from ALETHEIA-calibrated heuristics (route × duration × frequency multipliers, clamped to [0.5, 1.4]). Multipliers are directionally informed by EPA Exposure Factors Handbook (2011) and CalEPA OEHHA but are not regulatory consensus. See /api/methodology for full disclosure."},"hazard_summary":{"sensitive_populations":"general population (permanent intradermal deposit)","overall_risk":"moderate","primary_concerns":["Permanent intradermal deposit of unregulated pigments","PAHs in black carbon-based inks — IARC Group 1 carcinogens","Azo dye photodegradation releasing carcinogenic aromatic amines under UV","Metal pigment nanoparticle migration to lymph nodes"],"exposure_routes":"Intradermal injection (permanent deposit); systemic migration to lymph nodes"},"exposure":{"routes":["dermal"],"contact_types":["skin_prolonged"],"users":["adult"],"duration":"continuous","frequency":"rarely","scenarios":["Intradermal injection during tattooing (acute, hours)","Lifetime intradermal deposit of pigments (permanent)","UV exposure causing photodegradation of azo dyes releasing aromatic amines","Laser removal liberating ink particles into bloodstream and lymph"],"notes":"Tattoo ink is injected into the dermis and remains permanently — this is fundamentally different from topical exposure. EU REACH restricts 4,000+ chemicals in tattoo inks (2022). US has no equivalent federal regulation. Nanoparticles from tattoo ink have been found in lymph nodes of tattooed individuals."},"consumer_guidance":{"usage_warning":"Choose tattoo artists who use EU REACH-compliant inks (even in US). Ask for ink ingredient disclosure. Be aware that FDA does not regulate tattoo ink pigments. Black inks: choose inks tested for PAH content. Consider that tattoo removal (laser) liberates ink particles into circulation.","safer_alternatives":["EU REACH-compliant tattoo inks (restricted chemical list)","Vegan and organic-certified tattoo inks","Henna or jagua temporary tattoos (temporary, no injection)"],"alternatives":[{"name":"EU REACH-compliant tattoo inks","notes":"restricted chemical list"},{"name":"Vegan and organic-certified tattoo inks","notes":"Safer alternative to conventional products"},{"name":"Henna or jagua temporary tattoos","notes":"temporary, no injection"}],"red_flags":[{"indicator":"Use without recommended protective equipment","meaning":"Exposure to hazardous chemicals or particles without protection.","action":"Always use appropriate PPE as specified by manufacturer or SDS."}],"green_flags":[{"indicator":"Third-party safety certification visible on packaging","meaning":"Product has been independently tested to applicable safety standards.","verification":"Look for certification logos (CPSIA, ASTM, EN, NSF, UL, OEKO-TEX)."}],"what_to_ask":[{"question":"What materials is this product made from?","why_it_matters":"Material composition determines chemical exposure potential.","good_answer":"Full material disclosure with known safe materials.","bad_answer":"No material information or unspecified."}]},"regulatory":{"applicable_regulations":[{"jurisdiction":"USA","regulation":"OSHA workplace safety","citation":"29 CFR 1910","requirements":"PELs, SDS requirements, PPE mandates.","compliance_status":null,"effective_date":null,"enforcing_agency":"OSHA","penalties":null,"source_ref":null},{"jurisdiction":"USA","regulation":"EPA (TSCA/RCRA/FIFRA as applicable)","citation":null,"requirements":"Chemical reporting, hazardous waste, pesticide registration as applicable.","compliance_status":null,"effective_date":null,"enforcing_agency":"EPA","penalties":null,"source_ref":null}],"certifications":[],"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":"Ink waste: regular waste for small quantities. Needles: sharps container.","hazardous_waste":false,"expected_lifespan":"permanent"},"formulation":{"form":"varies","key_ingredients":[{"hq_id":"hq-c-ino-000001","name":"Lead (Pb)","role":"pigment_contaminant","concentration_pct":"trace"},{"hq_id":"hq-c-ino-000044","name":"Nickel (elemental)","role":"pigment_component","concentration_pct":"trace"},{"hq_id":"hq-c-org-000029","name":"Benzo[a]pyrene","role":"black_ink_component","concentration_pct":"trace"}],"certifications":[]},"materials":{"common":[],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-ino-000001","compound_name":null,"role":"pigment_contaminant","typical_concentration":"trace"},{"hq_id":"hq-c-ino-000044","compound_name":null,"role":"pigment_component","typical_concentration":"trace"},{"hq_id":"hq-c-org-000029","compound_name":null,"role":"black_ink_component","typical_concentration":"trace"}],"identifiers":{"common_names":["tattoo ink"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Intenze","manufacturer":"Intenze Products","market_position":"professional","notable":"Professional tattoo ink manufacturer"},{"brand":"Eternal Ink","manufacturer":"Eternal Ink","market_position":"professional","notable":"Popular professional tattoo ink"},{"brand":"World Famous Tattoo Ink","manufacturer":"World Famous","market_position":"professional","notable":"Vegan tattoo ink brand"}],"brand_examples_disclaimer":"Representative branded products of this category. Concerning ingredients listed in materials.concerning[] apply to the category, not necessarily to every named brand. Specific formulations vary by SKU and may have changed since this record was written; consult the brand's current ingredient label before drawing brand-level conclusions.","sources":[{"type":"expert_curation","name":"ALETHEIA Safety Database","date":"2026-03-25"},{"type":"regulation","title":"OSHA workplace safety (29 CFR 1910)","jurisdiction":"USA","citation":"29 CFR 1910","id":"src_0358de26"},{"type":"regulation","title":"EPA (TSCA/RCRA/FIFRA as applicable)","jurisdiction":"USA","id":"src_e10425f0"},{"id":"src_001","type":"cdc","title":"CDC - Lead Poisoning Prevention","url":"https://www.cdc.gov/lead-prevention/","accessed":"2026-01-13","relevance":"Blood lead reference values, no safe level doctrine","inherited_from_compound":"hq-c-ino-000001"},{"id":"src_002","type":"who","title":"WHO - Lead Poisoning Fact Sheet","url":"https://www.who.int/news-room/fact-sheets/detail/lead-poisoning-and-health","year":2024,"accessed":"2026-01-13","relevance":"Global burden statistics, health effects","inherited_from_compound":"hq-c-ino-000001"},{"id":"iarc_chromium_v100c_2012","type":"regulatory","title":"IARC Monographs Volume 100C: Arsenic, Metals, Fibres and Dusts — Chromium (VI) Compounds Group 1 (Lung Cancer, Nasal/Sinus Cancer), Nickel Compounds Group 1, Beryllium Group 1 (2012)","year":2012,"inherited_from_compound":"hq-c-ino-000044"},{"id":"epa_ccl5_2022","type":"regulatory","title":"US EPA: Contaminant Candidate List 5 (CCL5) — Final List of Unregulated Contaminants for Regulatory Evaluation under SDWA (2022); includes nickel, cobalt, vanadium, PFAS, and 97 additional chemical and microbial contaminants","year":2022,"inherited_from_compound":"hq-c-ino-000044"},{"id":"iarc_100f_bap","type":"regulatory","title":"IARC Monographs Volume 100F: Benzo[a]pyrene — Chemical Agents and Related Occupations","year":2012,"inherited_from_compound":"hq-c-org-000029"},{"id":"epa_bap_iris","type":"regulatory","title":"US EPA IRIS: Benzo[a]pyrene — Toxicological Review (Final)","year":2017,"inherited_from_compound":"hq-c-org-000029"},{"type":"regulatory","title":"US Food and Drug Administration (FDA)","jurisdiction":"USA","id":"src_82d1cfcd","extraction":"description_reference"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-14T01:24:28.150Z"}}