What do the principles of the color wheel illustrate in hair coloring?

The principles of the color wheel play a crucial role in hair coloring by illustrating how colors can be mixed and used in conjunction with one another. Specifically, it depicts the relationships between complementary colors (colors opposite each other on the wheel) and analogous colors (colors that sit next to each other). Understanding these relationships is essential for creating desired hair color effects, such as neutralizing unwanted tones or enhancing specific hues.

When working with hair color, knowing which colors complement one another allows a stylist to achieve balance and harmony in the overall look. For instance, adding a complementary shade can neutralize brassy tones in blonde hair, while utilizing analogous colors can create depth and dimension.

The other options focus on unrelated aspects of hair services, such as heat tool usage, application techniques, and conditioning treatments, none of which relate directly to the color mixing and theory represented by the color wheel.