What is the purpose of a toner in hair coloring?

A toner primarily serves to adjust the tone of the hair after lightening. When hair is bleached, it can often take on unwanted undertones, such as yellow or orange hues. Toners contain pigments that can neutralize these tones, resulting in a more balanced and desirable final color.

For instance, if hair is lightened and appears too brassy, a purple toner can be applied to counteract those warm tones and achieve a cooler, more natural look. This process is essential in the hair coloring routine for achieving the desired shade, especially for blondes and those who have undergone significant color changes.

While lightening hair, locking in moisture, and adding shine are also important aspects of hair care and coloring, they do not define the specific purpose of a toner in this context. The primary function of a toner is focused on modifying the color itself rather than providing moisture or enhancing shine.