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.

Smith explains, you can develop a new allergy at any time. “When testing synthetic hair to see if you are allergic, I ...

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 ...

[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.