Aluminium surfaces need special care and treatment to prevent them from staining and oxidising. This polish has been specifically formulated for use on pontoon boats, tinnies, and canoes. It can easily be applied by hand or with an electric buffer. The Protective Polymer Barrier Coating (PTEF(R)) repels stains and UV rays that can cause your precious equipment to lose its shine. PTEF(R) is a brand name for Polytetrafluoroethylene. While that might be a mouthful, another brand name for it is Teflon(R) - which you're no doubt more familiar with. PTEF(R) bonds to the treated areas and seals them to protect against grime and stains. The polish can also be used to remove the white stains left behind when hull cleaners don't completely wash off.