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 ...

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 ...

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 ...

Hair dyes contain chemicals that in rare cases can cause severe, even life-threatening, allergic reactions. Hair dye manufacturers say they are not intended for anyone under the age of 16.

While ancient dyes were made of plant and animal extracts, the evolution of the practice has seen the use of aggressive chemicals that can trigger allergic reactions and cause harm to users. Hair ...

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.