Indola Innova Setting Thermal Protector Use of styling irons and hairdryers can begin to damage the hair especially with frequent use but it would be a bit much to say stop using them completely. A much more sensible solution is to use Indola Innova Smooth Thermal Protector. It contains moisturising silk extract which gives a controlled silky and shiny look and protection against heat. Directions for use: Spray on before blow drying or on dry hair before using styling irons. It is also a good idea to shampoo your hair before applying the Thermal Protector. If there is a trace of previously used products in your hair this could reduce the effectiveness of the Thermal protector leaving your hair open to damage.