BONUS: The Marvels of Madam C.J. Walker Part 2

How did Madam C.J. Walker transform the beauty industry with her haircare empire? And how have the politics of beauty changed since her time? Alex talks to Alka Menon, assistant professor of sociology at Yale University.

Stories of bold voices, with brave ideas and the courage to stand alone. Historian Alex von Tunzelmann shines a light on remarkable people from across history.

A BBC Studios production.

Producer: Elaina Boateng Presenter: Alex von Tunzelmann Executive Producer: Paul Smith Commissioning editor for Radio 4: Rhian Roberts