I love this product and have used it so much in the past that it isn't so effective anymore. BUT if you're not an IcyHot over-user :) it is fantastic for rubbing out knots and soothing tendonitis. The cold/hot sensations can be intense, but that's the best part. The only real concern with this product is that you must IMMEDIATELY wash your hands very thoroughly after application. It WILL sink into the skin on your hands and having IcyHot where you don't have pain is really really annoying.