page_title: Hair roller
hierarchical_section_title: Hair roller
caption_attribution_description: This is an image of "African people at work" from Tanzania
context_page_description: A hair roller or hair curler is a small tube that is rolled into a person's hair in order to curl it, or to straighten curly hair, making a new hairstyle.
  The diameter of a roller varies from approximately 0.8 inches to 1.5 inches. The hair is heated, and the rollers strain and break the hydrogen bonds of each hair's cortex, which causes the hair to curl. The hydrogen bonds reform after the hair is moistened.
  A hot roller or hot curler is designed to be heated in an electric chamber before one rolls it into the hair. Alternatively, a hair dryer heats the hair after the rolls are in place. Hair spray can temporarily fix curled hair in place.
  In 1930, Solomon Harper created the first electrically-heated hair rollers, then creating a better design in 1953.
  In 1968 at the feminist Miss America protest, protesters symbolically threw a number of feminine products into a "Freedom Trash Can". These included hair rollers, which were among items the protesters called "instruments of female torture" and accouterments of what they perceived to be enforced femininity.
context_section_description: A hair roller or hair curler is a small tube that is rolled into a person's hair in order to curl it, or to straighten curly hair, making a new hairstyle.
  The diameter of a roller varies from approximately 0.8 inches (20 mm) to 1.5 inches (38 mm). The hair is heated, and the rollers strain and break the hydrogen bonds of each hair's cortex, which causes the hair to curl. The hydrogen bonds reform after the hair is moistened.
  A hot roller or hot curler is designed to be heated in an electric chamber before one rolls it into the hair. Alternatively, a hair dryer heats the hair after the rolls are in place. Hair spray can temporarily fix curled hair in place.
  In 1930, Solomon Harper created the first electrically-heated hair rollers, then creating a better design in 1953.
  In 1968 at the feminist Miss America protest, protesters symbolically threw a number of feminine products into a "Freedom Trash Can". These included hair rollers, which were among items the protesters called "instruments of female torture" and accouterments of what they perceived to be enforced femininity.
caption: Hair rollers in Tanzania
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