What does the term "overlapping" refer to in hair analysis?

The term "overlapping" in hair analysis specifically refers to the situation where two or more colors are incorrectly applied on the same strand of hair. This situation can lead to uneven color results or unwanted tones, as the new color may mix with the previously applied color, creating a muddy or inconsistent appearance.

In the context of hair coloring, it's important for a stylist to differentiate between previously colored hair and the new color being applied to ensure a seamless transition and an even finish. This principle is crucial for achieving professional-looking highlights or color corrections, and understanding overlapping helps prevent mistakes that could result in undesirable outcomes for the client.

Other options, while related to hairdressing, do not capture the accurate meaning of "overlapping" within the context of hair analysis and coloring.