Exfoliation is extremely vital to the overall look and health of the skin on the face and body. However, many people do it incorrectly, do it too often, or don't exfoliate enough. Exfoliation is beneficial because it removes those cells that are clinging on, revealing the fresher, younger skin cells below. Exfoliation is necessary because as you age dead skin cells start to pile up on the skin causing dull uneven looking skin and preventing products from being able to properly penetrate into the skin giving it the necessary benefits. Exfoliation should only be done weekly and not everyday. Exfoliation is the removal of the oldest dead skin cells that cling to the skin's outermost surface, or epidermis.