| Agent Name |
Henna |
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| CAS Number |
83-72-7 |
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| Formula |
C10-H6-O3 |
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| Major Category |
Biological Agents |
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| Synonyms |
2-Hydroxy-1,4-naphthalenedione; 2-Hydroxy-1,4-naphthoquinone; 2-Hydroxynaphthoquinone; C.I. 75480; C.I. Natural Orange 6; Flower of paradise; HANA; Henna; Lawson; Lawsone; Mehendi; Mendi; [ChemIDplus] |
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| Category |
Plant-Derived Allergens |
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| Sources/Uses |
Henna is a dye obtained from a shrub that grows in northern Africa and southern Asia. It is used by hairdressers around the world to give a reddish color to the hair. [Encarta] The powdered leaves of Lawsonia inermis (Lythraceae) plant are used as brown hair dye. [ChemIDplus] |
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| Comments |
Occupational asthma reported in a hairdresser; [Malo] Allergic contact dermatitis is extremely rare. [Reference #1] Henna can cause allergic contact urticaria. [Asthma in the Workplace, p. 807] |
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| Reference Link |
Contact allergy to henna |
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| Exposure Assessment |
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| Skin Designation (ACGIH) |
Not evaluated |
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| Adverse Effects |
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| Asthma |
Yes |
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| Skin Sensitizer |
Yes |
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| Links to Other NLM Databases |
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