What is the function of hair toner?

The function of hair toner primarily revolves around neutralizing unwanted undertones in the hair. After a bleaching process or as a response to natural hair color, it’s common for hair to have undesirable hues, such as brassy yellows or orange tones. Toner works by using color theory, typically incorporating shades of violet or blue, which counteract these warm undertones.

Additionally, hair toner enhances the overall appearance of the hair color, enriching its tone and depth, which makes a significant difference in the final result. While other products may focus on lightening hair or addressing different hair concerns—such as thickening or extending the longevity of a hairstyle—they do not serve the specific role of correcting or enhancing color tones in the way that a toner does. This makes the use of toner critical for achieving a more balanced and aesthetically pleasing hair color.