Yukalic Lithium drier helps with a thorough drying process, especially at low temperatures,but must only be used at low addition to avoid premature film cracking or yellowing of long oil alkyd based paints. Lithium is a substitute (safer alternative) of Lead and is used in Lead-free driers in combination with Cobalt and Calcium. Also used as an esterification catalyst in the manufacture of alkyd resin and UPR.