Idaho Cosmetology Licensure Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

The principle behind oxidation in hair coloring is primarily based on a chemical reaction that alters the hair pigment. When hair color treatments, particularly permanent dyes, are applied, they often contain a color precursor and an oxidizing agent, such as hydrogen peroxide. The oxidizing agent facilitates the oxidation of the color precursor, leading to the formation of larger color molecules that become trapped within the hair structure. This process not only changes the color of the hair but also can lighten existing pigments.

By fundamentally altering the hair's pigment through oxidation, a more permanent and vibrant color result is achieved, distinguishing this method from others that may simply coat the hair or provide temporary solutions. This understanding of oxidative hair coloring is crucial for cosmetology professionals, as it informs their approach to achieving desired results while considering the health and integrity of the hair.