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

The purpose of using a toner in hair coloring is primarily to adjust the tone and neutralize unwanted colors. Toners are specially formulated products that are applied after the initial hair coloring process. They help in refining the color by correcting any undesirable hues that may have resulted from the dyeing process, such as brassy or overly warm tones. For example, if a client has colored their hair blonde and it results in an orange tint, a violet-toned toner can be applied to neutralize the orange, creating a more natural-looking blonde.

Using a toner is essential in achieving the desired final hair color, allowing stylists to personalize and enhance their clients' hair colors and meet their specific aesthetic goals. This step can greatly impact the overall appearance of the hair, providing a more sophisticated and polished result.

Other options, such as lightening hair color, adding moisture, or providing shine, do not accurately describe the specific function of a toner in the hair coloring process. While toners may have some secondary benefits regarding hair texture and shine due to the conditioning agents they contain, their primary role is focused on color correction and adjustment.