Check what's in your cosmetics
Paste an INCI list or upload a label photo — get a full ingredient breakdown instantly.
Drop a label image or paste ingredients — we’ll decode it.
Built on clinical allergen databases (ACDS, CARD) · INCI compliant · 30+ allergens tracked
How it works
Snap or paste
Photograph any label or paste an INCI ingredient list.
AI decodes every ingredient
Chemical names translated, allergens flagged, irritants highlighted.
Safe, Warning, or Avoid
A clear verdict matched to your personal allergy profile.
Generic ratings miss what matters to you
The problem
A product can be rated "clean" by every app and still trigger your reaction. Generic scores don't know your patch test results. That $60 serum they rated safe could contain your exact allergens — Parfum, CI 77491, Arachis Hypogaea Oil — buried in an unreadable INCI list.
The solution
AllerNote checks against your allergens, not a generic database. Scan any label, and in 3 seconds you'll know: "Avoid — contains Parfum, which triggers your fragrance allergy." Clear answers before you waste the money.
Free Tools + Trigger Detective
No signup for tools. Free account unlocks Trigger Detective.
Product Comparator
Comparing two serums? Get AI-generated plain-English breakdowns of both.
Compare FreeIngredient Conflict Checker
Can you use retinol with AHA? Select your actives and see which ones clash — with fix suggestions.
Check NowTrigger Detective
Reaction correlation across products you've marked as a problem. See common ingredients driving flare-ups.
Free accountAllerNote vs Yuka, Think Dirty, and INCIDecoder
If someone searches for Yuka alternatives, Think Dirty alternatives, or tools like INCIDecoder, this is the difference: AllerNote is built around your known triggers, not generic product scores.
| Feature | AllerNote | Yuka | Think Dirty | INCIDecoder |
|---|---|---|---|---|
| Checks products against your known allergens | Yes | No | No | No |
| Designed for patch test results | Yes | No | No | No |
| Tracks reactions over time | Yes | No | No | No |
| Photo label scanning for allergy decisions | Yes | No | No | No |
| Ingredient explanations in plain English | Yes | Limited | Limited | Yes |
| Dermatologist sharing workflow | Yes | No | No | No |
Based on the current public positioning of these tools. Yuka and Think Dirty are useful for generic product scoring. INCIDecoder is strong for ingredient lookup. AllerNote is for people who need product decisions based on their own allergies and patch test history.
Learn About Allergens
Ingredient reference guides to help you understand your allergies.
Common questions
Quick answers — see the full FAQ on our About page.
No. Use the free AI scanner without signing up. Create a free account when you want saved history, personalized allergy profiles, Trigger Detective, routines, and reaction tracking.
Point your camera at the label or paste the INCI list. AllerNote's AI extracts every ingredient, translates chemical names (like 'Arachis Hypogaea' → Peanut Oil), and flags known allergens and irritants.
We use published contact allergen databases (including INCI standards) and continuously improve based on professional feedback. The scanner recognises ingredients in multiple languages and naming conventions.