Redken Smooth Down Heat Glide Leave-In Serum is a protective smoother that provides heat safe control to tame frizz on your unruly hair. Ideal for use with heated styling tools, it gives an ultra-smooth, glossy finish with increased manageability and shine. Formulated with the unique Ionic Smoothing Complex, Redken Smooth Down Heat Glide Leave-In Serum contains macadamia oil, candelilla wax and cationic refiners that attract to and neutralise the existing anionic charges on your hair, smoothing its surface and providing a long lasting frizz free finish. Directions of use: Apply 1-2 pumps to your towel dried hair. Blow dry or straighten with ceramic irons. Reapply 1 pump to your lengths and ends to tame the frizz.