I have had the DPL device for about 2 months, and incredibly only took it out of the box 2 weeks ago! I think I was intimidated by the instructions to put it together. It was very easy, by the way. It is tedious to sit with your face in this thing for 17 minutes, but after doing it about five times now, and actually noticing my two brown spots fade, I am pretty sold on this device. These brown spots have made a harrowing comeback from two Levelon procedures at the derms office, a year of RetinA, daily Vivite glycolic cream, and anything else I read about along the way. I have used the device once a day, but the instructions say you can use it twice.
Other articles on the web say there is no harm in using it as many times as you feel like. I will now begin using creams with it, as I am certain now that it is effective, since my skin seems to be shedding more quickly. I believe we will be seeing salons with full body LED machines, considering that they turn cells over 150-200 times faster, your whole body would glow! I was in a doctors office yesterday and they had a LED head device, used for hair growth and the side benefit of relief from migraines. They allowed me to try it for twenty minutes and it is very relaxing, and the nurses said they sit under it every chance they get. Light therapy is very healthy.