Dual reflective film has a metallized outer layer that acts as a mirror to reflect all the solar energy hitting the window it's installed on, which makes it excel at reducing incoming heat and protecting against UV and IR energy. Suitable for most glass types, dual reflective film has a carbon inner layer that has sharp, clear views and a shiny outer layer that acts as a mirror, creating a day-time only privacy. The darker (lower) the shade, the shinier the appearance. The dry adhesive makes the film easy to work and forgiving for new users.