Vermont Barbers and Cosmetologists Practice Exam 2026 - Free Barber and Cosmetologist Practice Questions and Study Guide

The first step in the hair coloring process is conducting a patch test. This is a crucial procedure to ensure the safety of the client and to check for any potential allergic reactions to the hair dye. The patch test typically involves applying a small amount of the dye on a discreet area of the skin, usually behind the ear or on the forearm, and observing the area for any adverse reactions over 24 to 48 hours.

Conducting a patch test is important because hair color products can contain various chemicals that may trigger sensitivities or allergies in some individuals. Performing this test helps to avoid adverse effects that can occur if the client has an allergy to the dye, thereby promoting a safer and more responsive service.

While selecting a color is an important step that follows after ensuring client safety, it cannot be addressed without first establishing that there are no allergies present. Washing the hair is also a preparatory step but is not as foundational as the patch test in ensuring customer safety and satisfaction with the product being used. Applying a base coat is part of the coloring process, but it occurs after the initial safety checks have been completed.