Hmmmm, Truthfully, I’m a little surprised you would mention HeadOn, but here we go.
99.9% of this product is wax and water. What’s left (which ain’t much) contains potassium bichromate (aka potassium dichromate) and is extremely poisonous and deadly if swallowed.
Due to the absence of scientific study, the National Advertising Division of the Better Business Bureau requested the company refrain from claiming it relieved headaches. Additionally, Consumer Reports has concluded any positive benefits of HeadOn were probably the result of the placebo effect. As such, if you think it works, then it just might work. However, if you think eating bull testicles will cure your headache, they will work just as well.
Sources:
www.headon.comhttp://www.jtbaker.com/msds/englishhtml/p5719.htm