{"hq_id":"hq-p-bdy-000116","name":"Contact Lens Solution (Multipurpose and Hydrogen Peroxide)","category":{"primary":"personal_care","secondary":"eye_care","tags":["contact lens","PHMB","hydrogen peroxide","BAK","preservative","ocular"]},"product_tier":"BDY","overall_risk_level":"moderate","description":"Contact lens cleaning and storage solutions containing PHMB (polyhexamethylene biguanide), polyquaternium-1, or hydrogen peroxide (3%). PHMB is a preservative/disinfectant that can cause corneal toxicity with chronic use. Hydrogen peroxide systems require neutralization before lens insertion — unineutralized peroxide causes severe eye pain and corneal damage. BAK (benzalkonium chloride) in older formulations is toxic to corneal epithelium.","synthesis":{"derived_risk_level":"moderate_to_high","synthesis_confidence":0.85,"synthesis_method":"compound_composition","context_used":"human_child","context_source":"product_users","exposure_modifier":1.15,"vulnerability_escalated":true,"escalation_reason":"Child exposure group","compounds_resolved":3,"compounds_total":3,"synthesis_date":"2026-03-27","synthesis_version":"1.0.0"},"hazard_summary":{"sensitive_populations":"contact lens wearers (daily ocular exposure)","overall_risk":"moderate","primary_concerns":["PHMB chronic corneal toxicity (solution-induced corneal staining)","Hydrogen peroxide unineutralized insertion (severe corneal burn)","BAK in older formulations toxic to corneal epithelium"],"exposure_routes":"Direct ocular contact via lens surface (12-16 hours daily)"},"exposure":{"routes":["ocular"],"contact_types":["ocular"],"users":["adult","child"],"duration":"hours","frequency":"daily","scenarios":["Daily lens insertion with residual solution on lens surface (12-16 hours contact)","Hydrogen peroxide lens insertion without complete neutralization (severe corneal burn)","PHMB corneal toxicity from daily chronic exposure (corneal staining)"],"notes":"FDA classifies contact lens solutions as medical devices. PHMB at 0.0001% can still cause corneal epithelial toxicity with chronic daily use (solution-induced corneal staining). Hydrogen peroxide systems (ClearCare, AO Sept) require minimum 6-hour neutralization — premature lens insertion causes immediate severe pain."},"consumer_guidance":{"usage_warning":"Never insert lenses stored in hydrogen peroxide without complete 6-hour neutralization. If experiencing corneal irritation with multipurpose solution, switch to hydrogen peroxide system. Never rinse lenses with water (Acanthamoeba risk). Replace lens case monthly.","safer_alternatives":["Hydrogen peroxide system (ClearCare — best disinfection, lowest preservative toxicity when properly used)","Preservative-free saline for rinsing","Daily disposable lenses (eliminate solution exposure entirely)"],"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":"Hydrogen peroxide system","notes":"ClearCare — best disinfection, lowest preservative toxicity when properly used"},{"name":"Preservative-free saline for rinsing","notes":"Safer option"},{"name":"Daily disposable lenses","notes":"eliminate solution exposure entirely"}]},"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":"Recycle bottle. Regular waste for lens case.","hazardous_waste":false,"expected_lifespan":"months"},"formulation":{"form":"varies","key_ingredients":[{"hq_id":"hq-c-org-001413","name":"PHMB","role":"disinfectant","concentration_pct":"0.0001"},{"hq_id":"hq-c-ino-000015","name":"Hydrogen peroxide","role":"disinfectant_alt","concentration_pct":"3"},{"hq_id":"hq-c-org-000714","name":"Benzalkonium chloride","role":"preservative_legacy","concentration_pct":"trace"}],"certifications":[]},"materials":{"common":[{"material_id":null,"material_name":"Primary formulation for contact lens solution (multipurpose and ","component":"main product","prevalence":"common","notes":"Standard personal care product formulation."}],"concerning":[],"preferred":[]},"compound_composition":[{"hq_id":"hq-c-org-001413","compound_name":null,"role":"disinfectant","typical_concentration":"0.0001%"},{"hq_id":"hq-c-ino-000015","compound_name":null,"role":"disinfectant_alt","typical_concentration":"3%"},{"hq_id":"hq-c-org-000714","compound_name":null,"role":"preservative_legacy","typical_concentration":"trace"}],"identifiers":{"common_names":["contact lens solution (multipurpose and hydrogen peroxide)"],"aliases":[],"manufacturer":null,"brands":[]},"brand_examples":[{"brand":"Bausch + Lomb","manufacturer":"Bausch Health","market_position":"mass_market","notable":"Leading contact lens solution brand"},{"brand":"Alcon OPTI-FREE","manufacturer":"Alcon","market_position":"mass_market","notable":"Multi-purpose contact lens solution"},{"brand":"Clear Care","manufacturer":"Alcon","market_position":"premium","notable":"Hydrogen peroxide contact lens cleaner"}],"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":"src_001","type":"database","title":"PubChem Compound CID 11371","url":"https://pubchem.ncbi.nlm.nih.gov/compound/11371","accessed":"2026-03-18","notes":"Chemical identity, properties, safety data","inherited_from_compound":"hq-c-org-001413"},{"id":"src_002","type":"reference","title":"ATSDR Toxicological Profile — CAS 32289-58-0","url":"https://www.atsdr.cdc.gov/toxprofiledocs/index.html","notes":"Toxicological profile and health effects summary","inherited_from_compound":"hq-c-org-001413"},{"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"}],"meta":{"schema_version":"4.0.0","last_updated":"2026-03-25","timestamp":"2026-05-02T18:17:50.442Z"}}