you will do fine.
as the person playing Cedric in Harry Potter : GOF said. "Make-up is really great, because you coudve had a really late night and come in the next morning absalutely trashed, and it would be up to them to fix it *snarkle snarkle snarkle*"
edit: Pro-Active doesnt work, Refresh however, does.... or just go to the doctor and get drugs if its THAT much of an issue, which it isnt :)