Hairstyles come and go but hair rollers never go out of fashion. Whether heated, bendy or bristly, rollers are the ultimate tool for creating glamorous curls, stunning waves or simply injecting a little life and bounce to an otherwise boring hairstyle. Whichever hair roller you use, the key to successful curls lies in the way they are handled. This article gives some simple tips to help limit bad hair days while leaving you with perfect curls every time.