Owatrol Polytrol is a penetrating oil that restores the original colour and appearance of dull or tarnished plastics, stone, tiles, metal, gel coats and other surfaces. It penetrates the surface, re-wetting the colour pigments to restore their original lustre and colour which have been lost through sunlight, rain and pollution and it also gives corrosion protection. When used on tarnished metals, it brings back the shine and gives long term protection against corrosion. Simple to apply using a cloth or soft brush and wipe off in just 10 minutes. It can be used on both horizontal and vertical surfaces and can even be used on fibreglass (GRP). Polytrol dries to a tough and long-lasting flexible finish that does not leave a film, so it won't flake.