What tool is typically used in the application of hair color?

The application of hair color is most effectively done using a brush. This tool allows for precise control over the amount of color applied and helps in evenly distributing the product through the hair. A brush can also reach the roots easily, ensuring consistent coverage, which is crucial for achieving the desired color result. Its design typically features a flat, wide surface for painting the color onto the hair, allowing for both thoroughness and ease of use during the application process.

While other tools like a comb are useful for sectioning hair and ensuring that the hair is evenly distributed, they are not primarily designed for the application of hair color. Scissors are used for cutting hair rather than applying products, and clips are helpful for sectioning and holding hair but do not apply color. The brush is therefore the most appropriate and effective tool for this particular task.