d-c-fix self-adhesive mirror privacy offers a one way privacy wherever the light is greater. For example, if fitted to the room side of all external glazing you will be able to see out but no one will see in. The mirror is created wherever the light is greater. The self adhesive backing makes application quick and easy; simply apply to the window using water, use a squeegee to smooth into place, then leave to dry. The film can be removed when you fancy a change!