I bought this for my fiancé who is a general contractor and on his feet etc all day long. He’s not very flexible so he’s prone to pulled muscles. We’ve had luck with jack black products in the past so I purchased this in place of his icy hot in hopes it would work better without all of the chemicals. Unfortunately my fiancé feels like this muscle rub is pretty ineffective. He feels only minimal relief and it lasts only a short time. Sadly we won’t be purchasing this again!