Background: Finding alternative hair dyes for individuals allergic to para-phenylenediamine (PPD) has been difficult. Newer permanent and demipermanent hair dyes that have replaced PPD with para ...

A woman has vowed never to dye her hair at home again after suffering an allergic reaction, leading to two trips to the hospital and 20 days of medication. Isabelle Lowe, 19, was dying her hair at ...

Patients who are allergic to PPD but test negative for allergy to PTDS will very likely tolerate the newer permanent and demipermanent PPD-free hair-dye products based on PTDS. Although patients ...

The chemical paraphenylenediamine, or PPD, which is commonly found in permanent darker-toned hair dyes, is often the culprit behind allergic reactions that can occur from coloring your hair.