What should the technician monitor while using the facial steamer?

When using a facial steamer, monitoring the distance to the client's face is crucial for several reasons. Maintaining the appropriate distance ensures that the steam is delivered effectively without causing discomfort or potential burns to the client. If the steamer is positioned too close, the high temperature can irritate the skin, while being too far may not provide the desired benefits, such as effective hydration or opening of the pores. The technician must keep an eye on this distance throughout the treatment as the steam output can vary and the client's skin sensitivity can differ.

In terms of the other options, while monitoring the power setting and the amount of steam produced are important aspects of ensuring the steamer functions correctly, these factors do not directly relate to client safety and comfort in the same way that managing the distance does. Monitoring heart rate is generally not a typical concern during a facial treatment unless there is a pre-existing medical condition that warrants it. Therefore, focusing on the distance to the client’s face is key for a successful and safe facial steaming experience.