I am very skeptical about this kind of thing. We found this being sold from a booth at the flea market. Yony's (my husband) back has been bothering him pretty bad. He wanted to try it and the guy had samples so we took some samples. This was last weekend. Yony has used this throughout the week and says that it [relieves his pain]. Lately, in the evenings my hands have been feeling swollen and stiff...I decided I would finally give this stuff a try. It is topical and you just rub it in like lotion...my hands were no longer feeling stiff and swollen! This skeptic is no longer skeptical about this product at all. The ingredients are natural and the active ingredient is menthol but it doesn't have a strong scent like menthol though. Bottom line: If you are hurting, this is worth giving a try.