The Andre Walker Hair Typing System, also known as TheHair Chart, is a classification system for hair types created in the 1990s by Oprah Winfrey's stylist Andre Walker.[1][2][3] It was originally created to market Walker's line of hair care products but has since been widely adopted as a hair type classification system.[4][5][6] Walker's system includes images of each hair type to aid classification.[7][8][9][10] The system has been criticized for an apparent hierarchy which values Caucasian hair over other hair types. In 2018 the system was the subject of episodes of the podcasts99% Invisible and The Stoop.[2][11]