Grumbacher 2.5oz Cobalt Drier Best-Test making them ideal for black

making them ideal for black and white work

Apply to one surface only

Georgian Oil Colours from Daler-Rowney enrich contemporary artistic expression through modern and brilliant colours

Also used to repair book bindings and other paper items

The odorless water-based ink will not bleed

Grumbacher 2.5oz Cobalt Drier Best-Test making them ideal for blackAs its name implies, it speeds the drying time of oil colors. Add to an oil painting medium in drops as opposed to adding directly to oil paint. Cobalt Drier is an extremely strong additive for oil paints and should be used sparingly. Test medium before applying it to an oil painting. Over use may cause cracking of paint film when drying. Made in the USA.