Grumbacher's  2-1/2-Ounce Cobalt Drier Artists Oil Medium  (1417335657) -A recommended additive to accelerate drying time. Add small amounts to mediums.

Because it is extremely strong, Cobalt Drier should be used sparingly by applying it in drops. It should not be mixed directly into oil paints, but first mixed into an oil painting medium, which can then be added to the paint. Cobalt Drier should always be tested before using it in a painting.

Shipping Weight: 1  lbs.