Self‐testing for contact allergy to hair dyes – a 5‐year follow‐up multicentre study

Contact Dermatitis - Tập 78 Số 2 - Trang 131-138 - 2018
Ulrik F. Friis1, An Goosens2, Ana M. Giménez‐Arnau3, Carola Lidén4, Elena Giménez‐Arnau5, Ian R. White6, José Hernán Alfonso7, Wolfgang Uter8, Jeanne D. Johansen9
1Department of Dermatology and Allergy, Copenhagen University Hospital Gentofte, Research Centre for Hairdressers and Beauticians, 2900 Hellerup, Denmark
2Department of Dermatology, University Hospitals KU Leuven, 3000 Leuven, Belgium
3Department of Dermatology Hospital del Mar, Universitat Autónoma de Barcelona 08003 Barcelona Spain
4Institute of Environmental Medicine, Karolinska Institutet, 17177 Stockholm, Sweden
5Dermatochemistry Laboratory Université de Strasbourg‐CNRS UMR 7177 67081 Strasbourg France
6St John's Institute of Dermatology, London, SE1 9RT UK
7Department of Occupational Medicine and Epidemiology, National Institute of Occupational Health, 0033 Oslo, Norway
8Department of Medical Informatics, Biometry and Epidemiology Friedrich Alexander University, Erlangen‐Nürnberg 91054 Erlangen Germany
9The National Allergy Research Centre, Department of Dermatology and Allergy, Copenhagen University Hospital Gentofte, 2900 Hellerup, Denmark

Tóm tắt

SummaryBackgroundIn 2011, a multicentre study was conducted in order to determine how hair dye manufacturers instructed consumers to perform a self‐test prior to dyeing their hair, in order to identify individuals who are likely to react upon subsequent hair dyeing. A number of concerns were raised concerning the variability in instructions between products and producers, and the safety and validity of this tool.ObjectivesTo perform a 5‐year follow‐up study in order to determine whether manufacturers still recommend a self‐test, and if so, whether the procedures have been changed.MethodsDuring March 2016, a total of 40 oxidative hair dye products from 21 different manufacturers were bought in retail stores in 8 European countries.ResultsThe consumers were instructed to perform a self‐test prior to hair dyeing for 39 of the products; however, the procedures varied greatly regarding the method of application, the amount of hair dye applied, the location and size of the application area, the number of applications, whether or not rinsing was performed after application, the reading times, and how a positive reaction was defined.ConclusionsSelf‐testing is still recommended by almost all manufacturers of permanent hair dyes. There are major variations in the instructions, even in products from the same manufacturer. The previously raised concerns regarding safety and validity still remain.

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Tài liệu tham khảo

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Contact Dermatitis

Tập 78 Số 2

131-138

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