From CBS News:
Odds are you’ve seen the TV commercial that repeats the phrase, ” ‘Head On,’ apply directly to the forehead” over and over. It touts the benefits of an over-the-counter product. The ads used to say rubbing it on your forehead would relieve headaches, but then the Better Business Bureau announced that,
The company failed to provide any reliable clinical testing to support its claims.”
The commercials no longer claim Head On works, but they’ve become something of a pop phenomenon.