I tan on tane, just not as strong as one would normally do. I have a home box though I dont go to a salon with those 2500w machines, mine is a 600w box.
I did get badly burned once, I prefer to stay further back which you can't do on a tanning bed since my skin is sensative to the sun in the first place, and on the tane even worse. However its still possible, but I prefer ED or EOD, but short durations, and that would cost $ at a salon unless you have some kind of monthly pass.