As the scrubbing moves over your body, the exfoliating granules help to slough oil dead skin, and the rubbing action itself boosts circulation and helps drain your lymph nodes, by increasing blood flow to the skin's surface. Plus, after all that deep cleansing work in the shower, your post-wash moisturizer will be better able to soothe and hydrate your skin.

Just like your face, your body needs exfoliation to stay soft, smooth, and healthy. If your current body care is limited to a loofah and a bar of soap, it’s time to level up. Here’s everything you need to know about adding an exfoliating body scrub to your skincare routine.
What Is A Body Scrub?
Body scrubs are physical exfoliants that mechanically slough away dead skin cells. The feel of a “scrub” typically comes from a combination of sugar and/or salt that is suspended in an oil base. While some scrubs (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. 
Body Scrub Benefits
The skin is in a constant state of turnover: Dead skin rises to the surface, sheds naturally, and reveals the baby's soft skin underneath. This process slows over time, contributing to a buildup of dead cells on the skin’s surface. Add pollution and other forms of environmental stress to the mix, and you have a recipe for dull, rough, and itchy skin.
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 benefits of body scrubs include:
Promoting efficient circulation and skin cell turnover
Removing dead cells from the skin’s surface
Smoothing and softening rough, dry skin
Drawing out impurities and clearing congestion
Freeing ingrown hairs and smoothing razor bumps