UMTON cobalt siccative 100ml

UMTON Cobalt drier 100 ml is the best drier for artistic oil painting. It is added to speed up drying. It is highly concentrated, containing 1.5% cobalt. In normal use, it is added drop by drop. Up to 5 ml of cobalt drier can be added to 1 litre of pure linseed oil. Larger amounts are not recommended, because although the top layer dries very quickly, the paint underneath then dries through only with great difficulty. The contents of the bottle are enough for 20 litres of linseed oil.