Apply directly to the forehead
I don't know if it worked or not. I took Excedrin, and that's probably why the headache went away. But I found the Head On to be oddly soothing. I think I could get addicted to it. It made my head feel kind of cool and tingly -- I guess because of the menthol listed as an inactive ingredient on the label. It was sort of like a homeopathic high. I kept finding myself reaching for the Head On long after the headache was gone. I guess it's kind of like Burt's Bees Lip Balm for your head.
So now I carry it around with me with all my other addictions: lotion, mints, Purell, and the aforementioned Burt's Bees Lip Balm. Hey, I don't drink, smoke or gamble. I have to have something.