Removing spots from an Advintage Fedora

[Bruce Wayne]

Good evening ladies & gentlemen.

I have an Advintage fedora that has some spots on the brim that won't come out with a sponge or a brush.

Any suggestions as to what I should do short of a full clean & block?

Thanks!
Charlie

[Indiana Jeff]

You can try naphtha. If washing with a damp sponge and brushing didn’t work it sounds to me like the spots are oil based.

Regards,

Indiana Jeff