I had heard long ago that rubbing alcohol will take acrylic paint off of clothes and paintbrushes that have dried up. Well I have never been able to get this to work. I have soaked them and scrubbed them and just never had much luck. This weekend I started a paint project while my little one was asleep. Just simple Christmas trees for my mantle. Well, I opened my paint box and discovered several paintbrushes with paint on the end-I don't remember doing anything like this, it must have been some evil art goblin causing mischief and mayhem. Anyway, I completed my painting for the afternoon and remembered reading a while back that Murphy's Oil Soap would clean old paint out of brushes. I decided what could it hurt. Well to my surprise it worked. I let them soak, diluted in water because this stuff is thick, for about an hour and then used a toothbrush to comb through the bristles. Worked like a charm! Old brushes like new again. I think this may come in handy this year with some of the brushes here in the art room.