Hi - Thanks for the question. I actually did get one of these tools- not the long one that I think is intended to break up fat on legs and arms, but the handheld one to use on my tight neck muscles. It works well to dig into the knots that get into my neck- and, if you use it as she suggests, with oil and heat, you can get your muscles to move and let go a bit. The one I bought broke within three weeks and they replaced it for free. I can't say how it works on the fat/fascia stuff as I didn't really buy it nor am I using it for that. Hope this helps! Warmly, Holly B. (migraine.com team).