What is "oxidation" in the context of hair coloring?

In the context of hair coloring, oxidation refers to a chemical reaction that occurs when hair color is activated. This process typically involves the interaction of the hair color product, particularly those containing peroxide, with the natural pigments in the hair. When oxidation occurs, it modifies the existing color of the hair by either depositing new pigments or lightening the natural color.

Understanding this concept is essential for hair professionals because the effectiveness of hair coloring techniques heavily relies on the oxidation process. For example, during the application of permanent hair color, the ammonia in the dye opens the hair cuticle, allowing the oxidizing agent to penetrate the hair shaft and facilitate the color change. This chemical reaction enables the desired hair color to set, resulting in long-lasting results. Knowing how oxidation works helps stylists achieve the best outcomes for their clients while ensuring the health and integrity of the hair.