This can really make your hat look like new.
I restore felt hats for a hobby, and cleaning is one of the most common issues that happens.  This kit removes stains from dark felt hats.  The key seems too be to use a small amount of cleaner and a fairly large amount of soft scrubbing. It's really not hard to use, and it really does remove spots.  Brush the hat with a hat brush, clean the hat with a dry hat sponge, use this to remove stains, brush again wiwth the dry sponge, andagain with the hat brush.  Use stiffener if you're so inclined. You really can make a hat look new.
Rating: 5 stars