Why is it important to avoid overlapping during the color application?

Avoiding overlapping during the color application is crucial primarily because it can cause breakage and uneven color. When color is applied too close to previously colored hair, it results in a buildup of product in those areas. This can lead to over-processing, where the hair cuticles become damaged from excessive exposure to the chemicals in the dye. Overlapping can also create a darker shade on previously colored hair and a lighter shade on new growth, leading to an inconsistency in color throughout the hair.

In addition, if color is repeatedly applied to the same section, the hair fibers become weakened, making them more prone to breakage. This is particularly important for maintaining hair health and integrity, ensuring that the client's hair remains strong and vibrant post-treatment. Understanding this concept is essential for achieving a professional and balanced result in hair coloring processes.