How It Works This tool draws locks of hair into an interior curling chamber, where it holds hair in place, heats it up, and releases it as a smooth, bouncy curl. You can opt for tight ringlets by setting the tool on a high-duration setting, or choose looser, beachier waves by picking a shorter setting; no matter what you pick, the tool will tell you when it s time to release your hair. The Tulip s open-barrel design leaves your hair visible and exposed at all times, which allays any fear of getting hair tangled or jammed in the barrel as it spins. The open design also leaves ample space that lets it hold larger sections of hair, which is ideal for users with naturally thick hair.