OWATROL Deks Olje D1 is a uniquely penetrating wood oil that is high in solids and is able to get deep into the grain of woods where it dries, stays and sets. Used on its own OWATROL Deks Olje D1 needs occasional topping up of the surface as UV light and water wear it out. Deks Olje D2, or other UV varnishes, can be directly applied on top of OWATROL Deks Olje D1 to create a long lasting deep gloss finish.