How do IFRA 51st and the EU allergen rules apply to this lemongrass oil?
Lemongrass oil is one of the most allergen-flagged natural oils in the industry. It simultaneously triggers six EU 2023/1545 labelled allergens — citral (60.34%), geraniol (4.08%), d-limonene (4.90%), linalool (3.03%), citronellol (0.10%) and citronellal (0.19%) — so finished cosmetics must list all six at the EU thresholds. Under IFRA 51st Amendment, citral is restricted by usage category.
EU Allergens (2023/1545) — all six exceed labelling thresholds
| Allergen | CAS | Natural level | Label status |
|---|---|---|---|
| Citral | 5392-40-5 | 60.34% | Mandatory |
| Geraniol | 106-24-1 | 4.08% | Mandatory |
| d-Limonene | 5989-27-5 | 4.90% | Mandatory |
| Linalool | 78-70-6 | 3.03% | Mandatory |
| Citronellol | 106-22-9 | 0.10% | Mandatory |
| Citronellal | 106-23-0 | 0.19% | Mandatory |
IFRA 51st maximum use levels (citral-driven, examples)
| Application class | Max use |
|---|---|
| Deodorant / body spray (Class 2) | 0.05% (500 ppm) |
| Body lotion / foot care (Class 5A) | 0.25% (2,500 ppm) |
| Fine fragrance EdT (Class 4) | 0.99% |
| Baby products (Class 5D/8/11A) | 0.08% (800 ppm) |
| Rinse-off soap / shampoo (Class 9) | 1.99% |
| Household cleaner (Class 10A) | 1.99% |
| Air freshener aerosol (Class 10B) | 5.00% |
| Non-skin candles (Class 12) | 10-100% |
- No IFRA-prohibited substances were found in the reference industrial batch
- EU transition: NEW products must comply by 2026-07-31; EXISTING stock by 2028-07-31
- We issue a batch-level IFRA 51st usage certificate and EU 2023/1545 allergen declaration with every shipment
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This article was published on 2026-09-07, and last updated on 2026-09-07. The article will be continuously updated.
