Final answer:
A scrub is an exfoliating cream that is massaged into the skin to remove dead skin cells. It differs from peels, masks, and serums, which have different methods of application and removal for skin treatment.
Step-by-step explanation:
The term that refers to an exfoliating cream that is rubbed off the skin is B) Scrub. A scrub is a skincare product that contains small particles or granules which, when massaged into the skin, help to remove dead skin cells from the surface, leaving the skin feeling smoother and more refreshed.
It contrasts with other options such as a peel which usually involves a chemical agent causing the dead skin to slough off, a mask which is applied and then removed after a certain period but not by rubbing, and a serum which is a skincare product that is applied and left on to be absorbed for its beneficial properties.