After cleansing, it is beneficial to exfoliate the skin to remove dead skin cells and unclog pores. Exfoliation can be done using physical scrubs, brushes, or chemical exfoliants. Physical scrubs contain small particles that help slough off dead skin cells when massaged onto the skin. Brushes, such as facial cleansing brushes or silicone brushes, can also be used to gently exfoliate the skin. Chemical exfoliants, such as alpha hydroxy acids (AHAs) or beta hydroxy acids (BHAs), work by dissolving the bonds between dead skin cells and promoting cell turnover.