What does the term "level" indicate?

The term "level" in hair coloring refers specifically to the degree of lightness or darkness of a hair color. In color theory for hair, levels typically range from the lightest blonde (often designated as level 10) to the darkest black (which can be associated with level 1). Understanding levels is crucial for hair colorists, as it allows them to communicate effectively about the desired result, formulate color mixes, and assess the outcomes of different coloring techniques. This concept is central to creating dimensional color, highlights, or achieving a specific look, as it ensures the stylist can accurately match and adjust the shade to the client's preferences.