Which haircolor is used to increase the ability to neutralize unwanted warmth?

The choice of a drabber is appropriate for increasing the ability to neutralize unwanted warmth in haircolor. Drabbers are specifically formulated with green or ash tones, which counteract warm hues like orange and red. They work by following the color theory principle that colors opposite each other on the color wheel will neutralize one another. For instance, adding a green base can effectively neutralize underlying warmth in blonde or brown hair, resulting in a cooler, more balanced shade.

Intensifiers, while they can enhance color, do not specifically target unwanted warmth; they are designed to add vibrancy and depth. Fillers are used in color correction to ensure the hair's porosity is even but do not have the role of neutralizing warmth. Metallic dyes can create a shiny effect but often do not provide the desired balance against warmth and may lead to unpredictable results. Thus, a drabber is the most effective choice for achieving the goal of neutralizing unwanted warmth.