Don't feel the heat! REF Heat Protection Spray can be used with any heat appliance such as blow dryer, flattening iron, curling irons etc. Forms a protective layer on the hair and prevents it from being harmed by the heat. Gives shine and a light hold. Parabeen Free. Directions: Spray evenly onto damp hair when using a blow dryer. When using flattening or Curling irons, spray ont each section in your dry hair before using the tool.