Incredible Bigen Hair Color Allergic Reaction Ideas. A bigen reaction can clearly be. Since hair dyes share similar ingredients, this generally applies to the product categories altogether, regardless of brand or shade.
What colour number should i choose for my first colouring? Research indicates that hair dye allergies, often linked to ppd, affect a significant portion of the population, with prevalence rates ranging from 0.1% to 2.3%. All home hair companies suggest carrying out a patch test on hair prior to using their product in case of an allergic reaction.
