We tested out numerous heatless curlers for travel, and these were the best ones! So simple, yet so effective! Save your hair from harmful heat products, and never worry about blowing a fuse in a foreign country again!
All you need to do is section your hair out, then wrap each section around one of the heatless curlers. Once wrapped, twist the curler into itself, so that it stays against your head.
Most effective if you sleep with them in, but if it's not comfortable, you can just wear for a few hours, and spray them with hairspray!