What is the purpose of performing a strand test before applying hair color?

Performing a strand test before applying hair color is essential for determining how the hair will react to the color. This process provides valuable insights into how the specific hair type, texture, and existing color will interact with the dye. Since different hair types can absorb color differently, the strand test allows the barber or stylist to predict the final outcome, assess any potential damage, and ensure that the desired shade is achievable. It helps avoid any unwanted results, such as uneven color or unexpected reactions, thereby allowing for adjustments to be made if necessary before proceeding with a full application. This precautionary step is crucial in delivering satisfactory results to the client.