A 50-year-old man was just trying to look younger for his 38-year-old wife when he decided to dye his graying beard — but he ended up suffering a severe allergic reaction that sent him to the hospital ...

Are box dye conditioners toxic? That question is becoming more and more pressing as the use of boxed hair dye remains ...

Allergic reactions to hair dyes, particularly those containing aromatic amine compounds such as p‐phenylenediamine (PPD), have become a growing public health concern. Exposure to these chemicals may ...

The vast majority of reactions to hair-dye products are caused by PPD. [4–6] In past years, PPD was used in permanent hair dyes but not in semipermanent dyes. More recently, PPD has been used in most ...