Iron Smoother Smoothing system. 4 - finish - flat-iron fast, stay sleek long. Invisible shield helps protect against heat damage (up to 400 degrees F/204 degrees C) and humidity. Maximizes performance of thermal looks by finishing the hair with heat-powered style memory. Lasting shine and frizz control. For silky straight, ultra-smooth results. To Use: Section by section: spray evenly over dry hair. Flat-iron from roots to end. Flammable. Avoid fire, flame, heat and smoking during application and until hair is completely dry. Avoid spraying in eyes.