Body polishers are physical exfoliants that mechanically slough away dead skin cells. The feel of a “scrub” typically comes from a combination of sugar, oatmeal or salt that is suspended in a foaming bath butter in combination with an oil base. While some polishers (particularly of the DIY variety) contain coarse salt and sugar particles, higher-quality varieties are formulated with fine, premium particles that polish skin without being abrasive.