During which stage of hair processing should adequate saturation be ensured?

Adequate saturation during hair processing is crucial to ensure even application of products and to achieve the desired results. In the neutralization stage, the primary goal is to stabilize and balance the hair's pH after a chemical treatment, such as perming or relaxing. Ensuring that the hair is adequately saturated with the neutralizing agent helps to thoroughly neutralize any remaining chemicals from the previous process, thereby protecting the hair structure and preventing damage. This step is essential to achieve optimum results and maintain the integrity of the hair.

In contrast, other stages, such as the initial application, focus on applying the chemical product itself, where saturation is important but is geared towards achieving even coverage rather than neutralization of chemicals. The shampooing stage involves cleansing the hair and does not require saturation in the same way as the neutralization stage. The final rinse, while also important for removing any remaining products, does not specifically focus on ensuring saturation for the purpose of neutralizing. Thus, during the neutralization stage, ensuring adequate saturation is key to the successful completion of hair processing.