Protective smoother is a leave-in serum that provides heat-safe control to tame frizz on even the most unruly hair. Gives an ultra-smooth, glossy finish. An ionic charge in the hair result in frizz & fly-aways. The ionic Smoothing Complex contains cationic refiners that attract to & neutralise the existing anionic charges on the hair, smoothing the surface. It helps control & prevent frizz.