Perhaps no other part of a daily skin-care regime can have more immediate impact than gently exfoliating skin. Though there are several different ways to exfoliate skin, by far the most effective and well-researched options are alpha hydroxy acids (abbreviated to AHAs) and beta hydroxy acid (abbreviated to BHA). The benefits of using a well-formulated AHA or BHA can be apparent almost immediately, or at the very least within a few days of use. Best of all, your skin will continue to improve over time with ongoing use.