What is the main benefit of using developer in hair coloring?

The main benefit of using developer in hair coloring is to assist in the oxidation of color. Developer contains an active ingredient, usually hydrogen peroxide, which plays a crucial role in the chemical process of hair dyeing. When developer is mixed with the color formulation, it activates the coloring agents, allowing them to penetrate the hair shaft more effectively.

This oxidation process is essential for the development of the hair color because it helps the dye molecules to bond with the hair, ensuring that the color takes hold and becomes long-lasting. Without the developer, the chemical reactions necessary for the color change would not occur, and the desired tint would not be achieved.

Additionally, while a developer can influence the shine and longevity of the color, its primary function is enabling the oxidation that leads to the actual transformation of hair color, distinguishing it as the most critical aspect of hair coloring.