Winsor & Newton Brush Cleaner & Restorer 16 fl oz.
This brush cleaner and restorer can be used on natural or synthetic brushes. It completely cleans dried acrylics  oils  and alkyds with no damage to brush head or loss of fibers. Leaves no oily residue. Non-toxic  biodegradable  water soluble  non-flammable and non abrasive. Low odor.