Metropolis Flat Iron features cutting edge titanium and ionic technology, to ensure a high performing, humidity proof, frizz free experience. Also features a high tech digital temperature gauge for complete control.Nano-Titanium Technology  High grade nano-titanium plates add shine to the hair and exhibit a healthier hair result. It evenly spreads heat across the surface to prevent damaging hot spots, while enabling maximum output of negative ions to promote a healthy styling experience. Negative ions neutralize the positive charge of damaged hair, creating a sleek look and eliminating frizz by closing hair follicles and smoothing the shafts.