Final answer:
Shampooing the hair before a relaxer service helps to prepare the hair for the chemical process and maintain its health.
Step-by-step explanation:
During a relaxer service, the hair should be shampooed before applying the relaxer. Shampooing the hair helps to remove any debris, oils, and product buildup, ensuring that the relaxer can penetrate the hair shaft effectively. Additionally, shampooing before the relaxer helps to balance the pH level of the hair, which is important for maintaining its health.
It is important to choose a shampoo that is gentle and sulfate-free to minimize any potential damage to the hair during the relaxer service. After shampooing, it is recommended to towel-dry the hair before moving on to the relaxer application.
In summary, shampooing the hair before a relaxer service helps to prepare the hair for the chemical process, ensuring optimal results and maintaining the health of the hair.