Midna noticed that Azula kept looking around, as if she were expecting to be ambushed at any minute.

"Hey, are you okay? You look kind of nervous. You don't have anyone after you, do you?"

She motioned ever so slightly in the air, and with an audible pop!, the slime covering Azula's face and the hair around it dissolved into black-and-green specks, leaving at least part of her clean -- she'd have gotten rid of it all, but she figured slime was better than wearing nothing at all. "That's a little better."