Congratulations — a patch test with clear positives is genuinely good news, even though it doesn't feel like it. You now know what to avoid. The problem is that knowing "Fragrance Mix I" or "Methylchloroisothiazolinone" doesn't tell you what those look like on a shampoo label. Here's the practical sequence.
1. Turn the report into a list you can actually use
Your result sheet lists allergens by their clinical or trade names. Each one appears on product labels under several different INCI names and synonyms — Fragrance Mix I alone covers eight separate substances. Upload a photo of your results to the free Patch Test Translator and it will extract your allergens and map them to the names you'll actually see on packaging.
2. Audit what you already own
Most people's current routine contains at least one of their allergens — that's usually why they were tested. Check your existing products first, starting with leave-on products (moisturizer, sunscreen, deodorant): they sit on your skin longest, so they matter most. Rinse-off products like cleansers are lower exposure but not zero.
3. Check before you buy, forever
This is the habit that keeps you flare-free: never buy a new product without checking its ingredient list against your allergens. You can do that manually — or scan the label with AllerNote, which checks every ingredient against your saved profile, including the synonyms and cross-reactors you'd never memorize.
4. Know your cross-reactors
Some allergens travel in packs. Balsam of Peru cross-reacts with fragrance components and even some flavourings; formaldehyde releasers are a whole family of preservatives with unrelated-looking names. Ask your dermatologist (or AllerBot) about cross-reactions for your specific positives.
What not to do
Don't try to memorize 40 synonyms, and don't switch to "hypoallergenic" products on faith — that word isn't regulated, and our research on 4,400+ products shows how often known allergens appear even in gentle-looking formulas. Your allergen list, checked against real ingredient lists, beats any marketing label.