Formulations that impart shade to hair with out incorporating p-phenylenediamine (PPD) supply another for people delicate to this chemical compound. These merchandise sometimes make the most of completely different dye molecules, comparable to toluene-2,5-diamine sulfate (TDS) or resorcinol, to realize the specified coloration. An instance contains henna, a pure dye derived from a plant, which has been used for hundreds of years.
The importance of those different hair colorants stems from the potential for PPD to trigger allergic contact dermatitis, a pores and skin response that may manifest as itching, redness, and swelling. For these with recognized sensitivities or a historical past of reactions to hair dyes, avoiding PPD is essential. The event and availability of PPD-free choices symbolize a big development, permitting people to change their hair shade whereas minimizing the chance of allergic reactions. This gives a safer and extra inclusive strategy to hair coloring.
