making a hat brim which need to be totally dry by Friday. I forgot to add tysol to the fondant. Would dusting it with tysol help to speed up the dry time. Idiot!! LOL

No, I don't believe dusting it with tylos powder will speed up up the drying process. Do you have time to make another? What about putting it in your oven with just the oven light on? I've seen that advice here. Sorry, I can't be of more help.

If you did not add tylose to the fondant, your brim is going to be very fragile. I would recommend remaking it and setting a fan on it to dry. Otherwise, you may be without a brim at all, if it breaks.