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 ...

A chemical compound used in many permanent hair dyes has been named Allergen of the Year for 2025 by the American Contact Dermatitis Society (ACDS). Toluene-2,5-diamine sulfate (PTDS) is an aromatic ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A woman has vowed never to dye her hair at home again after suffering ...

Chemicals in hair dyes may cause allergies for some people. Around 38% of people who color their hair report having an allergic reaction to hair dye. The most common allergic reaction to hair dye is ...

Wellness vlogger Chemese learned she was allergic to para-phenylenediamine (PPD) in 2014. Para-phenylenediamine, a chemical variant found in most hair dyes, has been the source of many allergic ...

A British woman is in a coma after collapsing while dying her hair with L’Oreal Preference hair dye. Doctors think she’s experiencing a severe allergic reaction to a chemical in the dye. The BBC ...

Add Yahoo as a preferred source to see more of our stories on Google. 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 ...