Most historians credit a French hairdresser, Marcel Grateau , with creating the first hot comb–style heated irons in the 1870s, while American inventor Elroy J. Duncan is widely cited as making the first hot comb in the United States. Madam C. J. Walker did not invent the hot comb, but she helped popularize and improve it, especially among Black women in the early 1900s.

Who invented the hot comb?

  • In late 19th‑century France, hairdresser Marcel Grateau developed heated metal tools to straighten and wave hair; many sources trace the hot comb’s origin to his innovations.
  • In the United States, Elroy J. Duncan is believed to have invented and manufactured the first hot comb (initially marketed as a mustache grooming tool) before it was adapted for women’s hair.
  • Over time, multiple American inventors patented versions and improvements, including Walter Sammons and others in the early 20th century.

What about Madam C. J. Walker?

  • A long‑standing myth says Madam C. J. Walker invented the hot comb, but historians and her own biography clarify that she did not create it.
  • Instead, she built a massive hair‑care business, improved hot comb designs (for example, wider teeth) and trained agents who used and sold hot combs, helping make them central to Black hair care.

Why is there confusion?

  • By the 1880s, hot combs or similar straightening tools were already being advertised in big American department‑store catalogs, showing they existed before Walker’s business took off.
  • Because Walker was a famous Black entrepreneur who popularized hot comb use and became a self‑made millionaire, many people later assumed she must have invented the tool itself.

Information gathered from public forums or data available on the internet and portrayed here.