Health Implications of p‑Phenylenediamine: The Aromatic Amine in Permanent Hair Dye

https://www.news-medical.net/life-sciences/Health-Implications-of-pe28091Phenylenediamine-The-Aromatic-Amine-in-Permanent-Hair-Dye.aspx This article explains how p-phenylenediamine (PPD) is used in permanent hair dyes, its health risks, including allergies and rare links to cancer, and the regulatory landscape. It highlights that while PPD is highly effective for coloring hair, its main health risks are allergic reactions, occupational dermatitis, and acute poisoning in developing countries.