As with all exfoliants, the goal of a body scrub is to remove dead skin cells and encourage the healthy production of new ones. This type of mechanical exfoliation not only smooths and polishes the skin but also draws out impurities. The rubbing action itself boosts circulation and helps drain your lymph nodes, by increasing blood flow to the skin’s surface. Removing dead cells from the skin's surface. Smoothing and softening rough, dry skin.