What does a treatment plan for a client usually include?

A treatment plan for a client typically includes details on what to expect during treatment because this component is crucial for client education and comfort. By providing this information, the electrologist ensures that the client understands the process, potential sensations, the duration of each session, and any aftercare instructions. This not only helps to manage the client's expectations but also builds trust and reinforces their decision to undergo the treatment.

While the other options may contain relevant information in different contexts, they do not directly pertain to the core purpose of a treatment plan, which is to outline the specifics of the treatment itself. Understanding the expectations can significantly enhance the client’s experience and outcome from the treatment.