Cleaning Paint/Artist's Brushes

As an artist I sometimes forget to rinse my brushes out well. By the time I get back to it it is completely stiff and dried with paint. The way I rescue these brushes is to fill an old plastic cup with enough Murphy's oil soap to cover the bristles and let it sit overnight. In the morning rinse well with cold water (hot water breaks down brushes faster). I do this every 6 months to all of my brushes whether they need it or not because it makes them feel like they are brand new.