You can use this unique brush cleaner and restorer to remove all traces of paint from both natural and synthetic brushes, leaving brush heads clean and conditioned, with no oily residue. Certified both AP non-toxic and biodegradable, this brush cleaner and restorer is completely safe for artists as well as for the environment. It is non-flammable, does not irritate skin or eyes, does not emit harmful vapors and is not an inhalation hazard.