Which is a step in preparing a client for makeup application?

Grooming the eyebrows is a crucial step in preparing a client for makeup application because it helps to create a clean and defined frame for the face. Well-groomed eyebrows enhance the overall look and provide a polished finish to the makeup. Proper eyebrow shaping can also influence how other makeup elements are applied and can enhance the client's natural features.

In contrast, applying mascara first would not be practical as it is typically one of the last steps in the makeup application process, ensuring that the eyes look fresh without smudging. Using a heavy moisturizer might not be ideal as it can interfere with the application of makeup, potentially leading to excess shine or the makeup not adhering properly. Skipping cleansing is not advisable, as it leaves the skin unprepped and may result in uneven makeup application or clogged pores. Therefore, grooming the eyebrows stands out as an essential preparatory step.