The T3 Curl ID 1 ¼" Smart Curling Iron is the first professional curling iron that’s truly personalized. This game-changing tool uses advanced technology to simplify your styling experience, eliminate guesswork, and minimize damage.1 Equipped with a smart-touch interface and HeatID technology, T3 Curl ID intelligently adjusts heat to your unique profile, based on your hair texture, color and chemical treatments. The result? Smooth, beautiful curls that last.