From the Wikipedia article

A permanent wave, commonly called a perm or permanent, is a hairstyle consisting of waves or curls set into the hair. The curls may last a number of months, hence the name.

Perm
Photo: Louis Calvete, CC BY-SA 3.0 via Wikimedia Commons

Text from Wikipedia, licensed CC BY-SA 4.0, taken from the style's article on Wikipedia.

Source

  • Source: Wikipedia, 'List of hairstyles' (en.wikipedia.org, CC BY-SA 4.0) + each linked article's lead summary via the Wikimedia REST API; image files from Wikimedia Commons with their own licence per file
  • List row: 74 of 99, from List of hairstyles (list revision 1376698486, fetched 2026-10-02T20:43:21Z).
  • Article: Perm (hairstyle)
  • Text licence: CC BY-SA 4.0; adapted text stays under the same licence.
  • Photograph: IcallPlasticDressing.jpg file page, CC BY-SA 3.0.

Words of quoted Wikipedia text on this page: 61.