What is the purpose of using a toner in hair coloring?

Using a toner in hair coloring primarily serves to neutralize unwanted tones that can occur after the bleaching or coloring process. When hair is lightened, especially through methods like bleaching, it often develops brassy or yellowish undertones. A toner is specifically formulated to counteract these unwanted hues, enabling hairstylists to enhance the overall color of the hair to achieve the desired shade.

For instance, if the hair has turned brassy, a purple or blue toner can be applied to neutralize the warmth and create a cooler, more balanced finish. Additionally, toners can also help to enhance the richness of the chosen color, providing a more polished and professional result. This function is crucial in hair coloring techniques, as it allows for greater customization and precision in achieving the final look in a way that straight coloring cannot.

Meanwhile, other options such as lightening hair significantly or conditioning it do not accurately describe the primary role of a toner. Lighteners and conditioners are separate products designed for those specific purposes. Similarly, while some products might add volume, toners are not recognized for that function in hair treatment.