HEADON
HeadOn, a topical product that claimed to relieve headaches, was essentially ChapStick meets Tylenol – except that one of the (heavily diluted) active ingredients, potassium dichromate, is used in developing photos and, in stronger doses, can cause symptoms ranging from dermatitis to cancer when used topically. Consumer Reports dismissed any possible positive results as a placebo effect. The product gained fame after being featured in a strange commercial that repeatedly stated “HeadOn. Apply directly to the forehead.”