Colorado Barbering Practice Exam 2026 - Free Barbering Practice Questions and Study Guide

In hair color processes, oxidation is a pivotal chemical reaction. When applying hair color, particularly permanent dyes, the oxidation process begins when the color molecules in the dye interact with the hydrogen peroxide or another developer included in the formulation. This developer acts to open the hair cuticle and allows the dye to penetrate the hair shaft.

During oxidation, the dye molecules change in structure and often become larger, which traps them within the hair. The process involves the conversion of colorless dye precursors into colored molecules, resulting in a lasting change to the hair's hue. It is essential for the development of a permanent hair color because it alters the dye chemically to achieve a specific shade and ensures that the color adheres to the hair.

Understanding this reaction is fundamental for anyone in the field of barbering or cosmetology, as it influences the effectiveness and outcome of hair color services, ensuring that professionals can achieve the desired results while maintaining the health of the hair.