I used to own a tanning salon!
YOU can tan - but... its the heat thing... so when the unit starts to feel warm you should jump on out. You can tan everyother day for 10 min. or so in a 20 min. bed and get a great tan... you never need to go the full time - I never went the full time in any of my equipment and I was very dark - I didn't tan only 3 times a week at the very very most and wasn't in the "sun" for over 2 years.
If you don't want to tan there is a GREAT cheap self tanner that I would like to recommend. Jergens makes it - you can find it anywhere.... it comes in two shades just make sure to rub it on lightly and do it at night before going to sleep instead of during the day - just be sure to be dry before you get dressed and WASH your hands like 4 times with soap and its AWESOME! I love it - i use it on my face and all - its great. and very easy to use..I have used them all as testers at one time or another.