Holbein - Spirit of Petroleum - 200 ml - Spirit of Petroleum is a refined petroleum oil. ItÆs most effective in thinning out colors and providing a smoothness in application similar to watercolor painting. It is violate meaning that upon drying, it evaporates quickly.

There will be no residue left over and imparts a dull matte finish, which is ideal for all work from rough sketch and underpainting to finished professional painting.