What should be done before applying a virgin sodium hydroxide relaxer?

Shampooing the client's hair is typically done prior to a chemical treatment to remove buildup and prepare the hair. However, it does not serve the protective purpose needed before applying a relaxer. In fact, hair should be clean but not freshly shampooed right before applying the relaxer, as this can strip natural oils that provide some protection.

Applying neutralizer is a step that occurs after the relaxer has been applied and processed. The neutralizer helps to stop the chemical action of the relaxer and restore the hair's pH balance. Thus, it is not a preparatory step but rather a post-treatment necessity.

Draping a towel over the client's face is not advisable as it could obstruct their vision and cause discomfort. The towel should be placed around the shoulders to protect clothing from chemicals, but it should not cover the face, which needs to remain unobstructed for safety and communication.