Danish oil is a wood finishing oil, made of either Tung oil or Polymerized Linseed oil.
Danish oil is a hard drying oil which provides a tough, water-resistant finish. It can be used as a finish, or as a primer or sealer on bare wood before applying paint or varnish.
When used, Danish oil provides a satin finish and provides coverage of approx 12.5 sq. m/l (600 sq. ft./gallon) and is usually applied over a course of three coats by brush or cloth, with any excess being wiped off shortly after application. The finish is left to dry for around 6-24 hours between coats, depending on the mixture being used and the wood being treated.