Oxidized citrus oil (R-limonene): A frequent skin sensitizer in Europe

Background: Peel oil from citrus fruits consists of R-(+)-limonene, which is one of the most commonly used fragrance materials in technical products and in fine fragrances. This substance forms allergenic oxidation products during handling and storage. Objective: We wanted to study the frequency of...

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Bibliographic Details
Published in:Journal of the American Academy of Dermatology 2002-11, Vol.47 (5), p.709-714
Main Authors: Matura, Mihály, Goossens, An, Bordalo, Olivia, Garcia-Bravo, Begoña, Magnussona, Kerstin, Wrangsjö, Karin, Karlberg, Ann-Therese
Format: Article
Language:English
Subjects:
Biological and medical sciences
Cosmetics
Cyclohexenes
Dermatology
Diseases of the skin. Cosmetics
Europe
Female
Humans
Hypersensitivity - etiology
Limonene
Male
Medical sciences
Medicin och hälsovetenskap
Patch Tests
Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects)
Skin involvement in other diseases. Miscellaneous. General aspects
Terpenes - immunology
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Summary:Background: Peel oil from citrus fruits consists of R-(+)-limonene, which is one of the most commonly used fragrance materials in technical products and in fine fragrances. This substance forms allergenic oxidation products during handling and storage. Objective: We wanted to study the frequency of allergic reactions to oxidized R-(+)-limonene in patients with dermatitis and find a suitable test preparation. Method: Patch testing with oxidized R-(+)-limonene was performed on 2273 patients at 4 dermatology clinics in Europe. Results: Of the consecutive patients tested, 3.8% to 3.9% had positive reactions in two of the clinics; 6.5% had positive reactions in the third clinic; and 0.3% had positive reactions in the fourth clinic. A total of 63 patients showed positive reactions. In total, 57% of the patients did not react to fragrance mix or balsam of Peru. We recommend testing with 3% oxidized R-(+)-limonene in patients referred for patch testing. Conclusion: The high frequency of oxidized limonene allergy provides clinical evidence for the European classification of R-(+)-limonene that contains oxidation products as skin sensitizers. (J Am Acad Dermatol 2002;47:709-14.)
ISSN:0190-9622
1097-6787
DOI:10.1067/mjd.2002.124817