Methods: A retrospective analysis of patch-test results since October 2006 was done and yielded 28 patients allergic to PPD who were also tested with a hair dye series. From January 2004 through ...

allergic reactions. Hair dye manufacturers say they are not intended for anyone under the age of 16. The European Commission insists that this warning should be put on all hair dye packaging.

In our study, only 1 of 27 individuals who tested negative for allergy to PTDS had positive reactions to any of the other substances in the hair dye series. One limitation of our study is that ...