Rust-Oleum Frosted Glass is a finish that obscures vision but lets light shine through painted objects. Ideal on glass doors, windows, skylights, outside of shower doors and greenhouses. For a decorative effect, use a stencil to create an etched look on mirrors, shower doors, glass accessories and more. For use on interior surfaces only. Paint Sub-Category: Specialty; Intended Application Environment: Interior; Finish/Sheen: Matte; Color(s): Clear.