My physiotherapist has rolled with me with the mini-roll a two-year-old surgical scar. The scar and the tissue around it were totally hardened. After 5 minutes, gently roll over it was all very soft and looked much better. Thereupon I ordered this kit to treat myself to. And for the back nor the Duo-ball. The mini-roll is also great for my clenched foot muscles. I was recommended to roll your feet over a Igelball that I feel but much too painful. But when I roll a few minutes about the cameo feet alternately, the muscles relax noticeably.