What process involves removing product from the hair strand to monitor color development?

The process of removing product from the hair strand to monitor color development is specifically known as color testing. This practice allows a haircolorist to observe how the color interacts with the hair and ensures that the desired shade is being achieved during the coloring process. By removing a small amount of the color product, the stylist can evaluate the color’s intensity and hue before proceeding further with the application. This step is essential as it helps prevent any unexpected results and allows for adjustments if necessary, ensuring the final outcome aligns with the client's expectations.

In contrast, color application refers to the actual use of the dye on the hair, while color development describes the time during which the hair color processes after application. Color refreshing typically involves reapplying color to maintain or enhance the existing shade, rather than monitoring the development of a new application.