Oil treatment for sauna benches 100% parafin oil. apply with cloth or brush to the sauna benches, skirting panels and backrests. Other wooden fittings in the sauna should be left untreated. 1-litre plastic bottle, (enough for approx. 6 square meters or 65 square feet). A few well chosen products from the Tylo range of accessories will soon give your sauna room a distinctive character all of its own.