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

The primary purpose of using a toner in hair coloring is to neutralize unwanted tones and enhance the color. Toners are typically used after the bleaching or coloring process, specifically to adjust the hue of the hair. For instance, if hair turns out too brassy or orange after bleaching, a toner can correct these tones, creating a more desirable shade, such as a cooler blonde or a more balanced color. This process allows for greater customization of hair color, ensuring the final result aligns with the client's desires.

While conditioners are important for hair health after coloring, this is not the role of a toner. Similarly, toners do not contribute to the thickness of the hair or expedite the coloring process; rather, they focus specifically on color balance and correction. Therefore, their key role revolves around enhancing and refining the color achieved during the initial coloring or bleaching process.