Marjorie Stewart Joyner (1896 – 1994) – Permanent hair-waving machine
Marjorie Stewart Joyner was an African American businesswoman and community leader who significantly contributed to the beauty industry. She was the supervisor of more than 200 beauty schools under Madame C. J. Walker’s network, and her clients included prominent figures such as Ethel Waters, Marian Anderson, and Billie Holiday. Joyner held the patent for a permanent hair-waving machine, revolutionizing the hair care industry. The machine used a combination of chemicals and heat to curl hair, replacing the traditional curling iron and reducing the time and effort required to achieve long-lasting curls. Joyner was also an advocate for civil rights and an active member of the National Council of Negro Women.