Why do we need exfoliators? Here's a statistic that will convince you in a heartbeat: 90% of the dust in your home is actually dead skin cells. Although you can't see them, your body is covered with dead skin cells. Any and all cleansing and moisturizing products you apply to your body have to work extra hard to penetrate these cells. In essence, the key to truly healthy, clean and smooth skin is to exfoliate once or twice a week, which manually sloughs off dead skin cells. Exfoliating is quick and easy, particularly if you work it into your shower regimen, and yields immediate results.