Well fishing season upon us, time to bust out the ole good hats. I have 3 I used to wear alot, but days of sweat in the liner and brim have left chalky marks on them. I hear you can't wash such cotton baseball hats without them shrinking, and some have a cardboard brim that would get ruined if washed.
My question is, anyone know of anything I could like, rub on the brim to remove such crud? Heres what I'm talking about. Bear in mind, its been sitting in my closet since summer.

http://i242.photobucket.com/albums/f...a/P2190129.jpg