Moroccanoil Perfect Defense is a weightless, dry aerosol, heat protective spray. This nourishing, argan oil and vitamin-fuelled formula re-hydrates the hair while protecting against the damaging effects of heat styling up to 450F/230C.To use: For best results, use at the beginning of your styling routine before applying other products. Mist generously and evenly 6 inches away from damp hair. Comb through and blow-dry. Style with a hot tool. Use on dry hair for second-day touch-ups.