L’Oréal Professionnel tecni.art Hot Style Iron Finish is a thermo-activated smoothing crème specifically designed to use with all hot irons and delivers extra smoothness and shine to your hair. This thermo activated smoothing crème from L’Oréal Professionnel works with heat to maximise styling performance. tecni.art Hot Style Iron Finish gives your hair extra smoothness and extra shine, for a look that’s straight off the catwalk and ready to party. Directions of use: Dry 90% of your hair. With a small hazelnut size amount of Iron Finish, apply section by section to the lengths of your hair. Use hot irons to style.