I’ve only been using about a week so I can’t give any reviews on how well it’s working on injuries and skin tightening ect yet, but my stomach has already seemed to look better from loose skin and my low back seems to better a bit pain wise, and I’m only using 2 times a day at moment, I just started my shoulder as it has been hurting and have had 2 surgeries, I sleep with my arm over head sometimes and it has caused me to wake up in pretty bad pain so I’m hoping the light therapy will help calm it down.