My first experience using it was not satisfactory because the effect that occurred after the treatment was bruises on the thighs and stomach. At the time of the treatment I had already reported the pain but it was not explained. Then, a day after the treatment the pain in the thigh increased and bluish bruises appeared. I have submitted a complaint to DL Slim & Skin but the response given was less than satisfactory, even until now I have not received a scientific explanation from the doctor. Hopefully this does not happen to other customers.