For many, it is a question of how oxidants work. Oxidants are an integral part of hair dye and have several different effects. An oxidant acts as a substance that increases the speed of the chemical reaction and remains unchanged at the end of its reaction, which is called the so-called catalyst. Oxidants are the activators of the color of the hair, the more the percentage increases, the more clarity it becomes. There are four types of oxidants: oxidant 3%, oxidant 6%, oxidant 9% and oxidant 12%. As we have already mentioned, the higher the percentage of oxidants, the greater the brightness. Oxidants may be twelve percent less likely to be eaten than others, this type of oxidant is used in a two-step process, the hair is turned off without decolorization and dark hair is de-populated.