This has been one of the best investments I've ever made. Both my husband and I use it on injuries and on delayed muscle soreness after work or training sessions. I had a badly infected finger that would not respond to antibiotics, antifungal treatments or anything else. It would sometimes swell to twice the size of the corresponding finger on the other hand. After three years of this, I was at the chiropractor and happened to mention the problem with my finger, so we tried the Pulse Laser. After two sessions, it healed, and has stayed healthy.