Head On! Apply directly to your head, which may be found up yer ass.

Head On! Apply directly to the forehead. Or don't because it won't make a bit of difference. This wiki entry shows that there's barely anything in this product. If you buy this and rub it on your head, you might as well rub a candle on your head. Or anything really. It's a placebo. Incredible.

Of course, there are two sinus cavities in your forehead and maybe that's why it works... Or doesn't.

It might as well be Head-On, developed by the Hanso Foundation