Pink Soap Power Wash is the most powerful non-toxic synthetic brush cleaner on the market.  It is a water-based product with no harmful chemicals or odors.  Power Wash is specifically made to dissolve dried paint left in brushes.  Your favorite synthetic brushes with dried paint in the ferrule can be restored to new condition with Pink Soap Power Wash.  It is a must have in the artist supply box.

Note:  Power Wash is designed for synthetic brushes.  Do not use with natural hair brushes.