Redken Smooth Lock Stay Sleek Be sleeker for longer with this Smooth Lock Stay Sleek from Redken. Taming unruly hair for longer with smoothness lasting up to 3 washes. The heat-activated formula in Redken Smooth Lock Stay Sleek tames nourishes & controls hair for weightless frizz control & intensive surface smoothing. The Thermo Active Polymer works to retain internal moisture & strengthen hair whilst fragrant almond oil conditions & coats the hairs surface to leave you with a silky finish & added shine.