What should be performed before using any chemicals on a client?

Before using any chemicals on a client, conducting a hair analysis or strand test is essential. This procedure allows a barber or stylist to assess the client's hair type, texture, porosity, elasticity, and overall condition. Understanding these factors is crucial for determining how the hair will react to the chemicals being used, which helps in preventing damage and achieving the desired result.

A hair analysis provides insights into the structural integrity of the hair, enabling professionals to select the most appropriate products and techniques tailored to the client's needs. This step is a fundamental part of ensuring client safety and satisfaction, as different hair types can respond differently to chemical treatments.

While patch tests and skin sensitivity tests are important for identifying allergies and sensitivities to specific products, they do not assess the hair's condition and suitability for chemical application. A scalp check is also significant for ensuring the client's scalp health but does not provide information on hair characteristics. Therefore, performing a thorough hair analysis or strand test is the best practice before utilizing any chemicals.