Oxdigi one way window film can be applied on windows and any smooth glass surface. This solar film blocks 97% of UV ray and 85% of infrared ray. Definitely it will be your ideal choice to reduce heat and save energy. <br> The one way mirror film offers an unimpeded view from the low-light side but reflective mirror effect from the high-light side. During the daytime, it is difficult to see in from outside, but at night people can see in if a light is on in the interior space. <br> Our product is designed non-adhesive / no glue. It can be easily installed and removed without residue left. You don't need to worry about the chemical release. <br> The mirror privacy film doesn't provide privacy at night when light on inside the house, so please use curtains or blinds at night.