If the hair is overlightened, what effect might a toner have on it?

When hair is overlightened, it often becomes very pale, ranging from a bleached yellow to even nearly white. This level of lightness lacks the warmth and can result in an unappealing and unnatural look. Applying a toner to overlightened hair is intended to adjust the unwanted undertones and create a more balanced color.

One common outcome of using a toner on overlightened hair is that it can impart an ashy or gray appearance. This happens because toners are typically formulated with various color pigments that neutralize the yellow or brassy undertones present in overlightened hair. For instance, purple or blue toners effectively counteract the yellow tones by adding a cool, ashy tint to the overall color.

This effect of toners is particularly sought after by those aiming for a more subdued, sophisticated look rather than vibrant brightness. Hence, the primary role of the toner, in this case, is to balance the excessive lightness and refine the hair's overall appearance, often leading to that desirable ashy or gray hue.