24-hour curl retention* 24-hour frizz control** 129% more shine** Designed with a TensionTune dial, the Neuro Curl+ Curling Iron allows you to fine tune the perfect clip tension for your unique hair type. NeutraHeat Technology delivers even heat across the ion-enhanced ceramic barrel to help speed up styling and minimize damage. Say hello to shiny, lasting curls.*Based on third-party testing. Results may vary by hair type and environment. **Compared to naturally dried hair. Based on third-party testing. Results may vary by hair type and environment.