This is advised even if you haven’t had issues with a specific brand in the past because, as Dr. Smith explains, you can ...

Isabelle Lowe had dyed her hair several times in the past and never experienced a reaction, but that all changed when she used an at-home box dye.

[7] It is possible that patients who test negative to PTDS will be allergic to one of these ingredients. We recommend that the hair dye series be expanded to include these potential allergens.

There are a few companies that sell tests for allergies. Some claim to be able to do this from samples such as a hair sample, others from things like your grip strength. None of these have any ...

Objective: We examined whether individuals allergic to PPD will tolerate PPD-free hair dyes containing PTDS. Methods: A retrospective analysis of patch-test results since October 2006 was done and ...