4Naturals Irontastic Protection Spray is a leave-in thermal protection spray. Apply this spray before working with heat to protect your hair from damage. Irontastic will protect hair from heat up to 450 degrees Fahrenheit. Irontastic will help striaghten and smooth all hair types when heat is added. Irontastic adds an intant shine and feels weightless, leaving no buildup in your hair. This leave-in protection spray not only protects against heat, but it is also a great color and UV protector.