Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Really works

I am using this on my shoulder and upper arm because I have a lot of pain in that arm due to an injury to my bicep and the connecting tissue. It does help, and I will continue to use it. When I asked my physical therapist if she had ever heard of it (this was before I used it for the first time) she said many of her patients swear by it and say it helps a lot to ease their pain. It has a slight smell when you first put it on -a pleasant smell - but disappears very quickly. I am going to try it on my old, stiff, creaky knees, too.