Things the Captain's Hat Maker does not want you to know:
Emerse it in a solution of Woolite and water, place it on the top shelf of your dishwasher, select the pot scrubber cycle, and turn off the dry cycle(as seen on BoobTube.) Select "Start." Rumor has it, that this will restore it to "like new" status. Please give us a report as this procedure will be added as a module in the Captain Leadership Training.
P.S. This works great for your favorite baseball caps, also.