STYLETHREAD -- LET'S TALK SHOP!

I need to get an EEG done next Wednesday.  The nurse said that they will put electrodes on my head and some gel and I will be fine to go back to work afterwards but that my hair might be a bit dirty from the gel.  Has anyone ever had one done?  I am kind of worried that my hair will be a totally greasy mess and I will look like a crazy person when I go back to the office.