What type of hair coloring is typically referred to as "retouching"?

Retouching specifically refers to the process of applying color to the roots of the hair, whether to cover gray hair or to maintain the overall color as the hair grows out. This technique is essential for ensuring a consistent look and managing regrowth that naturally occurs over time.

When color is applied only to the roots, it allows for a seamless blend, particularly when the rest of the hair has been previously colored. This is crucial for maintaining the overall aesthetic of the hair color and minimizing the visibility of any outgrowth. Other color techniques, such as foiling or single/double processes, involve more comprehensive applications that can alter the entire hair shaft or create highlighted and low-lighted effects, rather than specifically targeting regrowth at the roots.