Tight curl hair style wigs are permed when they are made. However, after shampooing the curls might become looser or a little mess. Customers can use 10" long bendy rollers to re-set the curls to make the style perfect. Super rollers are available in all Sally Beauty Supply stores.

This photo shows 7/16" (1.1cm) diameter curls on a 20" long hair wig. (the mannequin size is smaller than real people)