Common abbreviation of パーマネントウエーブ. Refers to the hairstyle or the process of getting a perm.
See also: パーマネントウェーブ
I got a perm at the hair salon.
She always has a loose perm.
I had my hair permed at the salon.
After six months, the perm started to fade out.
She gets a perm every summer.
iron perm