What is spotlighting in the context of hair color correction?

Spotlighting refers to a specialized hair color correction technique aimed at lightening darker areas of the hair to achieve a more uniform and even overall color. This process is particularly beneficial when certain sections of the hair, perhaps from previous coloring mistakes or natural variations, appear much darker than the desired shade. By applying lightener strategically to these darker areas, stylists can smooth out the color discrepancies and create a harmonious look that enhances the overall appearance of the hair.

The other choices do not accurately describe spotlighting. For instance, applying highlights to the entire head (first option) does not focus on balancing out uneven color but rather brightens overall hair. The third option about coloring gray hair is a specific technique that does not relate directly to correcting color unevenness, and mixing multiple treatments (fourth option) does not pertain to addressing specific color corrections in the hair.