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The original 26 substances · the 2 banned outright · the 56 new entries from EU Reg 2023/1545 · the 31 July 2026 transition timeline · INCI cheat sheet · pre-flight checklist for brands and marketplaces.

What's inside

Full Annex III table — all 26 with INCI names, CAS numbers, and product-context notes (with the 2 banned compounds tagged).

Why brands keep getting this wrong — the three failure modes that cost EU-shipping marketplaces their listings.

The Reg 2023/1545 expansion — what 56 new entries means in practice, the 31 July 2026 / 31 July 2028 deadlines, and a curated subset of the most operationally important new substances and botanicals.

Three approaches to programmatic screening — build, license, or use a cross-agency consensus API. Honest tradeoff analysis on each.

INCI cheat sheet — common essential oils → which Annex III allergens they typically carry above threshold.

Pre-flight compliance checklist — for brands placing product on the EU market, and for marketplaces approving third-party EU listings.

Resources + every primary regulation cited — verifiable against EUR-Lex without a second source.

Want to skim before you commit your inbox?

The full content is also published as a web article at /eu-fragrance-allergens. The PDF expands it with the full Annex III table, the curated 2023/1545 representative subset, the INCI cheat sheet, the pre-flight checklist, and the source-verification footer — material that's harder to use as a reference inline in a browser.

Either way, the underlying data — every allergen, every CAS number, every cross-agency context — lives in the ALETHEIA API. Try it without an account in the live playground, or grab a free Basic-tier key (500 calls/day, no card) at /pricing.