What is a crucial consideration before performing a chemical hair service?

Before performing a chemical hair service, it is crucial to consider the client's health conditions and goals. This is important because certain health conditions, such as scalp issues, allergies, or sensitivities, can affect how a client reacts to chemical products. Additionally, understanding a client's hair goals ensures that the service will meet their expectations and is appropriate for their hair type and condition. This consideration helps in customizing the service to suit the individual needs of the client, thereby promoting both safety and satisfaction with the final results.

In contrast, while client's hair color preferences are significant, they do not outweigh health considerations that may impact the service. Product popularity and the salon's product inventory, while relevant to market trends and business operations, do not directly relate to the well-being of the client or the outcome of the treatment. The primary focus in any chemical service should always prioritize the client's health and desired results.