Skin Allergens Database
Welcome to our skin allergens database. These are substances and ingredients we have found that cause eczema and various contract dermatitis. These are extracted from personal experiences of our test volunteers and dermatological databases all over the world. These link to article or page with information on the allergen and references.
Example of contact skin allergen eczema
Cetyl alcohol also known as Hexadecan-1-ol and Palmityl alcohol
Triethanolamine CAS Number 102-71-6
Note: We will be doing write ups on all of these in the future
Established contact allergens in humans EU List of fragrance ingredients
ACETYLCEDRENE CAS Number 32388-55-9
Cinnamaldehyde CAS Number 1437-10-9
| 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 | ++ |