Hair dye allergic reactions, a noun, occur when the body's immune system reacts to chemicals in hair dye. For instance, paraphenylenediamine (PPD), a common ingredient in permanent hair dyes, can trigger an allergic reaction in some individuals.
Understanding hair dye allergic reactions is crucial for hairdressers and individuals who dye their hair to avoid severe consequences. Recognizing the symptoms and understanding the potential treatments can prevent allergic reactions. Historically, the development of alternative hair dye formulas, such as PPD-free hair dyes, has significantly reduced the risk of allergic reactions.