Bio Ionic Long-Barrel Curling Iron vs TYMO CURLPRO Automatic Curling Iron

Buy the Bio Ionic if you have very long hair and want a manual iron that reaches the full length in one pass. Buy the TYMO CURLPRO if you want the iron to do the wrapping for you and you mostly wear medium-length hair. The Bio Ionic has the longer barrel and a higher heat ceiling; the TYMO has auto-rotation, an anti-scald shell and a tangle-reverse mechanism. Owners rate the Bio Ionic 4.4 out of 5 across 3,196 ratings; the TYMO's main complaints are the three heat settings and its wired-only design.

• Choose the Bio Ionic Long-Barrel if your hair falls past your shoulder blades and a standard barrel leaves the ends straight.
• Choose the TYMO CURLPRO if you want one-click rotation, a cool-to-the-touch shell and consistent curls without learning wrist technique.