Perm
Definition 1 of 2

Cosmetics
It refers to beauty treatments that can alter appearance.

A perm is a common way to achieve curls.
Fashion
Perms were particularly popular in the 1980s in hair fashion.

The style of the perm can greatly influence a person's look.
Duration
A perm is meant to last several weeks or months.

Depending on hair type, the lasting effects can vary.
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