How it works: Rather than twist the barrel from your ends up, as you would a curling iron, clamp it at the top of a 2-inch section of hair (flat plate on top), then drag it down to the ends. The barrel rotates, which smooths and straightens. Pause for a few seconds when you reach the ends if you want to curl them.
Why I loved it: Instead of straightening my hair with a flatiron and then plugging in the curling iron to curl the ends, I accomplished both with one tool, in one pass. And because of the rounded barrel, my roots didn't get flattened as they would with a typical flatiron.
Insider tip: For waves, wrap a section of hair around the barrel, then clamp down and hold for five seconds. Open the clamp to release the hair (don't pull it through).