The rod and scrunchies are covered in 100% silk and can be worn for just a few hours or overnight for curls that will stay longer, according to the brand. Halo Hair Labs Heatless Curling Kit $38. ...

We tested 23 sets of heatless curlers to find the best ones for damage-free styling and overnight use while traveling.

Achieve effortless curls with the Kitsch Flexi Rod Curlers, crowned the best overall choice for heatless curling. These innovative curlers offer versatility, ease of use, ...

The hair was shampooed and conditioned, and then set on rod curlers. (Straws can also be used.) After the hair was dried for 45 minutes under a hooded dryer, ...