The first 635nm LLLT device was released with a lot of fanfare and promoted as a quick-fix fat reduction device, even without FDA approval of those claims. Since it was laser-based, it was primarily sold to physicians, but the level of training and education was less than satisfactory to the point where most physicians did not understand the entire process. As a result, patients were over promised and most experienced less than acceptable outcomes. Patients expected to just sit under the light and their fat would be melted away, but that’s not how 635nm LLLT works. It was not properly stressed with the patients that the right diet, a slight amount of exercise to stimulate the lymphatic system and drinking plenty of water will dramatically improve their results. Additionally, the fact that the 635nm light source on this device was very weak, was positioned away from the patient’s body (measured light energy dissipates at an exponential rate as the distance between the source and the target increases), plus the beam was moving and not focusing on one specific spot, creating a situation where very little light energy was delivered to the fat cells. Since that early version, studies have been performed and a better understanding of the complete process with the steps that need to be taken to attain acceptable results has helped this segment of the market evolve into a proven and successful revenue-generating technology.