Do you ever find that your paint brushes end up forming little hooks at the end? The best way to prevent this is to use sable or kolinsky hair brushes (Here is a handy-dandy guide to different kinds of brush hairs http://www.dickblick.com/info/brushhair/ )
Some people will lick the brushes and press them with their fingers to get the shape back, but that's actually one of the worst things you can do since the acid in saliva can break the glue down in the ferrel and cause bristles to fall out. It also eventually dries out the bristles if you are using natural hair bristles. On top of that there are chemicals in the paint that you really do not want to ingest even in small amounts.
|"The Masters" Brush Cleaner and Preserver|