The Problem
You're allergic to nickel and fragrance mix. You buy a $60 serum — but the label says “Arachis Hypogaea Oil, Parfum, CI 77491.” Two days later: swollen eyes, wasted money, another product in the trash.
Your allergies. Every product. Checked.
Know if this product is safe for
YOUR allergies.
Add your known triggers once, scan any cosmetic label, and get a personalized Safe, Warning, or Avoid verdict in seconds. Then track reactions, spot patterns, and build safer routines.
Scan a Product Free See How It Works →
Built on clinical allergen databases • Privacy-first • No data sold
- Scan products
- Log reactions or mark safe
- Trigger Detective spots patterns
See AllerNote in 30 seconds
From label to clear decision — watch how fast it works.
- INCI nomenclature compliant
- Built on contact allergen databases (ACDS, CARD)
- 30+ clinically documented allergens tracked
Not medical advice — AllerNote helps you use your known allergies for product selection.
A product can be "100% clean" and still trigger your reaction.
Generic apps don't know your allergies. That $60 serum they rated "safe" could contain your exact triggers. AllerNote checks against you.
The Solution
Scan it first. AllerNote translates every chemical, checks against your personal allergy profile, and tells you: “Avoid — contains Parfum, which triggers your fragrance allergy.” In 3 seconds, before you waste the money.
See it in action
Three quick steps — from label to a clear decision.
1) Point. Snap. Done.
Photograph any product label from your bathroom shelf, store, or phone gallery. Or paste an INCI list.
2) Every ingredient, decoded
AllerNote’s AI reads the full INCI list, translates chemical names, and flags anything that could trigger a reaction.
3) Safe, Warning, or Avoid
A clear verdict with the exact reason — so you can confidently know “yes, this is safe for you” or explain why it isn’t.
After you scan, AllerNote gets more useful.
AllerNote is not just a one-time scanner. It helps you connect labels, reactions, routines, and dermatologist conversations.
01
Scan a product
Use your camera, a gallery image, or pasted INCI text to check a label against your allergy profile.
02
Log a reaction or mark it safe
Save what happened after use so AllerNote learns from your history instead of treating every product the same.
03
Trigger Detective
Reaction correlation surfaces the ingredients that repeat across your problem products.
04
Share with your dermatologist
Bring your allergy profile, saved products, and reaction history into medical conversations without rebuilding the story from memory.
Trigger Detective (Reaction Correlation)
Mark 3+ products as "caused reaction" and we surface the common ingredients driving the pattern.
Free Tools + Trigger Detective
No signup for tools. Free account unlocks Trigger Detective.
AI Ingredient Scanner
Check any product for 50+ known irritants. Works on camera or pasted INCI lists.
Try Free →Product Comparator
Comparing two serums? Get AI-generated plain-English breakdowns of both.
Compare Free →Ingredient Conflict Checker
Can you use retinol with AHA? Select your actives and see which ones clash — with fix suggestions.
Check Now →Trigger Detective
Reaction correlation across products you've marked as a problem. See common ingredients driving flare-ups.
Free account →AllerNote 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.
Knowledge Base
Learn About Allergens
Ingredient reference guides for you to learn more about 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.
Stop guessing. Start scanning against your allergies.
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