Oh, the infamous mud in the face. Most of the new players will have problems with this. I had problems with this years ago. The entire wipe face command is only for this one particular randomly appearing room effect. It's not a good design. Just remove the faux-blinding effect entirely, change the message to "you are hit in the face by a glob of hot mud! you wipe it off" and apply that Ap+1 immediately. Leaving the one time status effect immediately removable by a special input serves absolutely no purpose except for laughing at the players who didn't read through all of the available commands. And it's not even intuitive, you'd rather search in manual for some description about impaired vision (that looks a whole lot like invisibility indeed) instead of looking through the list of commands.
Also it's not being blind. It's not the same status. You can't cure blindness with wiping your face.
Gate closers: GE Wizard, DE Archer, Ratling Elementalist, Ratling Duelist, GE Merchant, ME Druid, HE Mindcrafter, ME Monk