Declarable fragrance allergens

When a fragrance allergen in a cosmetic product crosses 0.001% (leave-on) or 0.01% (rinse-off), it must be named individually in the ingredient list, not hidden inside "Parfum". This is the current list of those substances, with their CAS numbers and where each applies.

The EU expanded this list from the familiar 26 (24 still in force by 2023) to 81 with Commission Regulation (EU) 2023/1545, mandatory for products placed on the market from 1 August 2026. Northern Ireland follows the EU list. Great Britain has not adopted the expansion: it retains 25 entries from the assimilated regulation, including Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde (HICC), an old row Great Britain never deleted, although HICC is prohibited in cosmetics in the EU and in Great Britain alike (Annex II, entry 1380). The US requires no individual fragrance-allergen labelling yet (MoCRA rulemaking pending).

Last checked 25 September 2026: the EU cosmetics regulation as consolidated on 18 May 2026 and the Great Britain text to 15 August 2026 were re-read (both allergen lists unchanged; Great Britain also prohibits HICC, like the EU), as were the CLP regulation as consolidated on 1 July 2026 (label rules unchanged; the new font-size rules now apply from 1 January 2028), the EU and Great Britain food allergen lists and the US rules (unchanged).

Label name	CAS	EU / NI	GB
3-Propylidenephthalide	17369-59-4	Yes	No
6-Methyl Coumarin	92-48-8	Yes	No
Acetyl Cedrene	32388-55-9	Yes	No
alpha-Isomethyl Ionone	127-51-5	Yes	Yes
Alpha-Terpinene	99-86-5	Yes	No
Amyl Cinnamal	122-40-7	Yes	Yes
Amyl Salicylate	2050-08-0	Yes	No
Amylcinnamyl Alcohol	101-85-9	Yes	Yes
Anethole	104-46-1 +1	Yes	No
Anise Alcohol	105-13-5	Yes	Yes
Benzaldehyde	100-52-7	Yes	No
Benzyl Alcohol	100-51-6	Yes	Yes
Benzyl Benzoate	120-51-4	Yes	Yes
Benzyl Cinnamate	103-41-3	Yes	Yes
Benzyl Salicylate	118-58-1	Yes	Yes
Beta-Caryophyllene	87-44-5	Yes	No
Camphor	76-22-2 +3	Yes	No
Cananga Odorata Oil/Extract	83863-30-3 +3	Yes	No
Carvone	99-49-0 +2	Yes	No
Cedrus Atlantica Oil/Extract	92201-55-3 +1	Yes	No
Cinnamal	104-55-2	Yes	Yes
Cinnamomum Cassia Leaf Oil	8007-80-5 +1	Yes	No
Cinnamomum Zeylanicum Bark Oil	8015-91-6 +1	Yes	No
Cinnamyl Alcohol	104-54-1	Yes	Yes
Citral	5392-40-5 +2	Yes	Yes
Citronellol	106-22-9 +3	Yes	Yes
Citrus Aurantium Bergamia Peel Oil	8007-75-8 +3	Yes	No
Citrus Aurantium Flower Oil	72968-50-4 +2	Yes	No
Citrus Aurantium Peel Oil	68916-04-1 +4	Yes	No
Citrus Limon Peel Oil	84929-31-7 +1	Yes	No
Coumarin	91-64-5	Yes	Yes
Dimethyl Phenethyl Acetate	151-05-3	Yes	No
Eucalyptus Globulus Oil	97926-40-4 +1	Yes	No
Eugenia Caryophyllus Oil	8000-34-8 +2	Yes	No
Eugenol	97-53-0	Yes	Yes
Eugenyl Acetate	93-28-7	Yes	No
Evernia Furfuracea Extract	90028-67-4	Yes	Yes
Evernia Prunastri Extract	90028-68-5	Yes	Yes
Farnesol	4602-84-0	Yes	Yes
Geraniol	106-24-1	Yes	Yes
Geranyl Acetate	105-87-3	Yes	No
Hexadecanolactone	109-29-5	Yes	No
Hexamethylindanopyran	1222-05-5	Yes	No
Hexyl Cinnamal	101-86-0	Yes	Yes
Hydroxycitronellal	107-75-5	Yes	Yes
Hydroxyisohexyl 3-Cyclohexene Carboxaldehyde	51414-25-6 +1	No	Yes
Isoeugenol	97-54-1 +2	Yes	Yes
Isoeugenyl Acetate	93-29-8	Yes	No
Jasmine Oil/Extract	84776-64-7 +3	Yes	No
Juniperus Virginiana Oil	8000-27-9 +1	Yes	No
Laurus Nobilis Leaf Oil	8002-41-3 +2	Yes	No
Lavandula Oil/Extract	91722-69-9 +7	Yes	No
Lemongrass Oil	8007-02-1 +3	Yes	No
Limonene	138-86-3 +3	Yes	Yes
Linalool	78-70-6	Yes	Yes
Linalyl Acetate	115-95-7	Yes	No
Lippia Citriodora Absolute	8024-12-2 +1	Yes	No
Mentha Piperita Oil	8006-90-4 +1	Yes	No
Mentha Viridis Leaf Oil	8008-79-5 +1	Yes	No
Menthol	89-78-1 +3	Yes	No
Methyl 2-Octynoate	111-12-6	Yes	Yes
Methyl Salicylate	119-36-8	Yes	No
Myroxylon Pereirae Oil/Extract	8007-00-9	Yes	No
Narcissus Extract	90064-26-9 +3	Yes	No
Pelargonium Graveolens Flower Oil	90082-51-2 +1	Yes	No
Pinene	80-56-8 +3	Yes	No
Pinus Mugo	90082-72-7	Yes	No
Pinus Pumila	97676-05-6	Yes	No
Pogostemon Cablin Oil	8014-09-3 +1	Yes	No
Rose Flower Oil/Extract	8007-01-0 +6	Yes	No
Rose Ketones	43052-87-5 +7	Yes	No
Salicylaldehyde	90-02-8	Yes	No
Santalol	11031-45-1 +2	Yes	No
Santalum Album Oil	8006-87-9 +1	Yes	No
Sclareol	515-03-7	Yes	No
Terpineol	8000-41-7 +3	Yes	No
Terpinolene	586-62-9	Yes	No
Tetramethyl Acetyloctahydronaphthalenes	54464-57-2 +3	Yes	No
Trimethylbenzenepropanol	103694-68-4	Yes	No
Trimethylcyclopentenyl Methylisopentenol	67801-20-1	Yes	No
Turpentine	9005-90-7 +2	Yes	No
Vanillin	121-33-5	Yes	No

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Sources

Commission Regulation (EU) 2023/1545 (OJ L 188, 27.7.2023), as corrected by the corrigendum of 11.11.2025, Annex (EUR-Lex)
Regulation (EC) No 1223/2009, Annex III (consolidated text of 18.05.2026), entries 67 to 92 (EUR-Lex)
Assimilated Regulation (EC) No 1223/2009, Annex III, as it applies in Great Britain, entries carrying the individual-declaration condition (legislation.gov.uk)

Transcribed from the official texts linked above (checked against them); a labelling reference, not safety advice. You remain responsible for your product's labelling.