Pebeo Courtrai Siccative is a siccative composed of zirconium octoate and calcium. Siccatives are derived from metal salts. They are added sparingly to colour to speed up the drying time. They activate the oxidation reaction and are used with restraint to avoid possible surface defects.

Pebeo Courtrai Siccative is available in a 75 ml bottle. It accelerates the drying time on the surface as well as in deep films. It allows thick coats to harden evenly. It is very powerful and must be controlled with care. Being colourless, it does not alter light colours and is very efficient for blacks and lacquers. It can be thinned or cleaned using mineral spirits or turpentine.