A body scrub is a spa treatment that exfoliates and moisturizes the skin, leaving it smooth, soft, and rejuvenated. During a body scrub session, a mixture of abrasive ingredients (such as salt, sugar, coffee grounds, or other exfoliating agents) is massaged onto the skin to slough off dead skin cells, dirt, and impurities. This helps to unclog pores, improve circulation, and promote skin cell regeneration.