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Ingredient Checker
Paste an ingredient list — instant flags for parabens, sulfates, phthalates.
Free · InstantIndoor Air Quality Calculator
Compute steady-state concentrations of CO₂ + formaldehyde + VOCs + PM2.5 + radon + humidity from room volume + occupants + sources + ventilation + filter rating. Mass-balance model with ASHRAE 62.1 ventilation standard + WHO/EPA health targets + MERV/HEPA/carbon filter efficacy.
Free · InstantTap Water Contaminant Decoder
Map your water source + concerns to specific contaminants with EPA MCL + WHO guidelines, health effects, source pathways, and NSF-certified filtration technologies that actually remove each one. Covers 13+ contaminants from lead and PFAS to TTHMs and microplastics.
Free · InstantMold Risk Calculator
Set temperature + RH + surface material + exposure hours + source + ventilation + room size — tool computes mold colonization risk tier, time-to-visible-growth, likely species (Cladosporium / Penicillium / Aspergillus / Stachybotrys), dehumidifier capacity (Magnus formula), and the IICRC S500/S520 dry-out protocol with replace-vs-salvage thresholds per substrate. 3 demo scenarios. Client-side.
Free · InstantUV + SPF Sun Exposure Calculator
Set UV Index + Fitzpatrick skin type I-VI + SPF + application rate + surface reflectivity + elevation + cloud cover + time-from-solar-noon. Tool computes safe-exposure burn time via MED thresholds, application-corrected effective SPF (sqrt-scaling for typical under-application), reapply schedule, vitamin-D synthesis window per skin type, and 6 warning classes. 3 demo scenarios (beach / ski mountain / cloudy commute). Client-side.
Free · InstantCarbon Monoxide Room-Risk Calculator
12 combustion source presets (gas stove tuned/poor · water heater · furnace healthy/cracked · wood stove EPA-certified/leaking · kerosene · charcoal · generator · car idle) + room volume + ACH + venting + CO detector status. Mass-balance computes steady-state CO ppm + time-to-threshold against EPA NAAQS 9ppm / OSHA PEL 35 / UL 2034 alarms / ACGIH 150 / life-threatening 400 / lethal 800+. NFPA 720 detector placement. 8 warnings. 3 demos.
Free · InstantNoise Exposure Calculator — OSHA / NIOSH / WHO / EPA thresholds + TWA dose + NRR hearing protection
Compute time-weighted average (TWA) noise dose from per-segment source + duration; compare against OSHA PEL 90 dBA + NIOSH REL 85 dBA + WHO community 55 dB night + EU END 55/50 dB thresholds; apply NRR-derated hearing-protection attenuation; flag immediate-damage exposures (120+ dBA peak, impulse noise, fireworks, power tools); compute cumulative-dose % of daily 100%-dose-limit; NOAEL + TTS + PTS risk tiers; 6 demos (concert + construction + home-office + traffic + commute headphones + nursery).
Free · InstantGuides
Ingredients
What's actually harmful versus marketing fear on labels
Check ingredients
Skincare
Retinol, niacinamide, ceramides, SPF, and hair care chemistry. Concentration-to-effect tables, pH compatibility matrices, and evidence tiers per claim.
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Home
Air quality, water filtration, mold prevention, allergens, and cleaning efficacy. PPM thresholds, CADR calculations, and evidence-based home environment decisions.
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Endocrine Disruptor Cumulative Exposure Assessment — Per-Compound Exposure-Source Mapping (Cosmetics + Food Packaging + Cleaners + Drinking Water + Indoor Air + Dust), Daily-Cumulative-Exposure Math, Reduction-Roadmap Prioritization, Biomonitoring Interpretation
Endocrine disruptor cumulative exposure assessment framework mapping major compounds (BPA + phtha…
Enzymatic vs Oxidative vs Surfactant Stain Removal Mechanisms — Protease Lipase Amylase Specificity, Peroxide and Percarbonate Oxidation Pathways, Anionic vs Nonionic vs Cationic Surfactant Trade-Offs, and the Specific Mechanism That Lifts Each Stain Class
Reference explainer on the three mechanism classes that lift household stains — enzymatic hydroly…
Hard Water vs Soft Water Cleaning Strategy Comparison — Mineral Load Impact on Detergent Efficacy, Scale Prevention Patterns, Ion Exchange vs Chelation vs Sequestration Trade-Offs, and the Specific Cleaning Protocol That Wins Each Water Hardness Regime
Reference comparison of cleaning strategies across water-hardness regimes covering calcium and ma…
Preservative Efficacy vs Natural Alternatives — USP 51 + ISO 11930 Challenge Test Protocols, Preservative-System Design Matrix (Parabens + Phenoxyethanol + Organic Acids + Chelators + Alcohols), Log-Reduction Benchmarks, Formulation-pH Compatibility
Preservative efficacy testing framework covering USP 51 (Antimicrobial Effectiveness Test) and IS…
Sunscreen Ingredient Decision Matrix — Skin-Type × UV-Filter × Region × Skin-Condition Consumer Framework With EU/US/AU/JP Approval Overlay, Photostability Rankings, Cosmetic-Elegance Trade-Offs, Reef-Safe Regulatory Map
Sunscreen ingredient decision matrix framework mapping skin-type × skin-condition × region (EU/US…
Vacuum Cleaner Suction CFM vs Air Watts Buyer Guide — Motor Wattage vs Sealed Suction vs Airflow Trade-Offs, Bagged vs Bagless Filtration, HEPA Grade Impact on Allergen Capture, and the Specific Vacuum Spec That Matches Each Floor Type and Allergen Profile
Buyer-guide reference for vacuum cleaner specifications covering airflow CFM versus sealed suctio…
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