Grumbacher Japan Drier
Description:
A drier makes oil paint dry faster by accelerating oxygen absorption. This ages the paint film and can make it become dark and brittle, encouraging cracking. Problems are increased by overuse. All driers should be used very sparingly, and are not recommended for fine art use.
Japan drier is considered to be the most potent drier on the market. It can be made up of several types of driers, as "Japan" is a general term.