My husband and I have each had a chance to try this product. It works very fast and we are both impressed by it. My husband had a chance to try it after a long day of putting a play set and gazebo together. Even after traditional medication and drinking some water, the headache remained. I remembered I had this product, I rolled it around his hairline, and within a few minutes he told me (shocked may I add!) that his headache was gone! Would highly recommend to anyone with any type of headache!!