Table 13-1: Established contact allergens in humans.

INCI name (or, if none exists, perfuming name according to CosIng) CAS number Human evidence: see text
 Individual chemicals
ACETYLCEDRENE 32388-55-9 +
AMYL CINNAMAL* 122-40-7 ++
AMYL CINNAMYL ALCOHOL* 101-85-9 ++
AMYL SALICYLATE 2050-08-0 +
trans-ANETHOLE 4180-23-8 + (r.t.)
ANISE ALCOHOL* 105-13-5 +
BENZALDEHYDE  100-52-7 +
BENZYL ALCOHOL* 100-51-6 ++
BENZYL BENZOATE* 120-51-4 ++
BENZYL CINNAMATE* 103-41-3 ++
BENZYL SALICYLATE* 118-58-1 ++
BUTYLPHENYL METHYLPROPIONAL * 80-54-6 ++
CAMPHOR 76-22-2 / 464-49-3 + (r.t.)
beta-CARYOPHYLLENE (ox.) 87-44-5 Non-ox.: +, ox.: +
CARVONE 99-49-0 / 6485-40-1 / 2244-16-8 + (r.t.)
 CINNAMAL* 104-55-2 +++
CINNAMYL ALCOHOL* 104-54-1 +++
CITRAL* 5392-40-5 +++
CITRONELLOL* 106-22-9 / 1117-61-9 / 7540-51-4 ++
COUMARIN*  91-64-5 +++
(DAMASCENONE ) ROSE KETONE-4 23696-85-7 + (r.t.)
alpha-DAMASCONE (TMCHB) 43052-87-5 / 23726-94-5 ++
cis-beta-DAMASCONE 23726-92-3 +
delta-DAMASCONE 57378-68-4 +
DIMETHYLBENZYL CARBINYL ACETATE (DMBCA) 151-05-3 +
EUGENOL* 97-53-0 +++
FARNESOL* 4602-84-0 ++ - +++
GERANIOL 106-24-1 +++
HEXADECANOLACTONE 109-29-5 + (r.t.)
HEXAMETHYLINDANOPYRAN 1222-05-5 ++
HEXYL CINNAMAL* 101-86-0 ++
HYDROXYISOHEXYL 3-CYCLOHEXENE CARBOXALDEHYDE (HICC)* 31906-04-4 / 51414-25-6 ++++
HYDROXYCITRONELLAL* 107-75-5 +++
ISOEUGENOL* 97-54-1 +++
alpha-ISOMETHYL IONONE* 127-51-5 ++
(DL)-LIMONENE 138-86-3 ++ (non-ox.); +++ (ox.)
LINALOOL 78-70-6 ++ (non-ox.) +++ (ox.)
LINALYL ACETATE 115-95-7 + (non-ox.) ++ (ox.)
MENTHOL 1490-04-6 / 89-78-1 / 2216-51-5 ++
6-METHYL COUMARIN 92-48-8 ++
METHYL 2-OCTYNOATE* 111-12-6 ++
METHYL SALICYLATE 119-36-8 +
3-METHYL-5-(2,2,3-TRIMETHYL-3-  67801-20-1 ++ (r.t.)
CYCLOPENTENYL)PENT-4-EN-2-OL
alpha-PINENE and beta-PINENE 80-56-8 and 127-91-3, resp. ++
PROPYLIDENE PHTHALIDE 17369-59-4 + (r.t.)
SALICYLALDEHYDE 90-02-8 ++
alpha-SANTALOL and beta-SANTALOL 115-71-9 and 77-42-9, resp. ++
SCLAREOL 515-03-7 +
TERPINEOL (mixture of isomers) 8000-41-7 +
alpha-TERPINEOL  10482-56-1 / 98-55-5
Terpinolene 586-62-9 +
TETRAMETHYL ACETYLOCTAHYDRONAPHTHALENES 54464-57-2 / 54464-59-4 / 68155-66-8 / 68155-67-9 +
TRIMETHYL-BENZENEPROPANOL (Majantol) 103694-68-4 ++
VANILLIN 121-33-5 ++
 Natural extracts
CANANGA ODORATA and Ylang-ylang oil    83863-30-3; 8006-81-3 +++
CEDRUS ATLANTICA BARK OIL  92201-55-3; 8000-27-9 ++
CINNAMOMUM CASSIA LEAF OIL CINNAMOMUM ZEYLANICUM BARK OIL 8007-80-5 84649-98-9 ++ (r.t.)
CITRUS AURANTIUM AMARA FLOWER / PEEL OIL 8016-38-4; 72968-50-4 ++
CITRUS BERGAMIA PEEL OIL EXPRESSED 89957-91-5 + (r.t.)
CITRUS LIMONUM PEEL OIL EXPRESSED 84929-31-7 ++
CITRUS SINENSIS (syn.: AURANTIUM DULCIS) PEEL OIL EXPRESSED 97766-30-8; 8028-48-6 ++
CYMBOPOGON CITRATUS / SCHOENANTHUS OILS 89998-14-1; 8007-02-1; 89998-16-3 ++
EUCALYPTUS SPP. LEAF OIL 92502-70-0; 8000-48-4 ++
EUGENIA CARYOPHYLLUS LEAF / FLOWER OIL 8000-34-8 +++
EVERNIA FURFURACEA EXTRACT* 90028-67-4  +++
EVERNIA PRUNASTRI EXTRACT* 90028-68-5  +++
JASMINUM GRANDIFLORUM / OFFICINALE 84776-64-7; 90045-94-6; 8022-96-6 +++
JUNIPERUS VIRGINIANA 8000-27-9; ++
85085-41-2
LAURUS NOBILIS 8002-41-3; 8007-48-5; 84603-73-6 ++
LAVANDULA HYBRIDA 91722-69-9 + (r.t.)
LAVANDULA OFFICINALIS 84776-65-8 ++
MENTHA PIPERITA 8006-90-4; 84082-70-2 ++
MENTHA SPICATA 84696-51-5 ++
MYROXYLON PEREIRAE 8007-00-9; ++++
NARCISSUS SPP. diverse ++
PELARGONIUM GRAVEOLENS 90082-51-2; 8000-46-2 ++
PINUS MUGO/PUMILA 90082-72-7 / 97676-05-6 ++
POGOSTEMON CABLIN 8014-09-3; 84238-39-1 ++
ROSE FLOWER OIL (ROSA SPP.) Diverse ++
SANTALUM ALBUM 84787-70-2; 8006-87-9 +++
TURPENTINE (oil) 8006-64-2; 9005-90-7; 8052-14-0 ++++
VERBENA ABSOLUTE 8024-12-2 ++

Source: SCCS,  Opinion on Fragrance allergens in cosmetic products, pages 106-109