Bio Wood Varnish is an all-in-one wood stain and varnish. It is a hard, elastic, semi-transparent varnish for use on timber surfaces exposed to sun and rain. It is resistant to dirt and moisture. Bio Wood Varnish is a high quality natural finish which is primarily based on minerals and plant extracts. Bio Wood Varnish is formulated for durability, finish quality, colour and feel, and to minimize impact on both health and the environment. On soft woods and porous materials use Bio Wood Primer as a base coat.