What is one primary reason to avoid overlapping color during application?

Avoiding color overlap during application is essential primarily to prevent additional hair damage. When color is reapplied to previously colored hair, especially if the hair was already subjected to chemical processes, it can lead to excessive damage. Overlapping can cause the hair cuticle to lift too much, leading to dryness, breakage, and an overall unhealthy appearance.

Keeping the color application focused to the new growth or previously uncolored areas helps maintain the integrity of the existing hair. This practice is particularly important in preserving the hair's natural elasticity and moisture levels, ensuring that the hair remains healthy and vibrant post-coloring.

On the other hand, creating a more dramatic look, achieving a lighter shade, or ensuring even color distribution are objectives that can sometimes be affected by application techniques, but they do not address the immediate concern of maintaining hair health. Therefore, while they may be relevant in specific contexts, they do not outweigh the critical need to protect the hair from damage caused by overlapping color applications.