Perm (noun)

A chemical treatment used to give hair a permanent curl or wave.

Origin:

From the late 19th century, perm is an abbreviation of permanent wave, which refers to a chemical treatment used to give hair a permanent curl or wave.

Examples:

1. She got a perm to add some volume to her straight hair.
2. He was going to get a perm but decided to stick with his natural curls.
3. The stylist recommended a perm to add body to her fine hair.
4. Many women opt for a perm to have more manageable curls.
5. A perm can take several hours depending on the length and thickness of the hair.