I first tanned in a tann "stand-up" bed in 1978. I was 15 and we had to drive to a place 40 miles away in Hartford, CT.
The tubes had no real UV ray protection...we got burned...and turned lobster red several days later. Shortly after that, a place called "Toatl Tan" uponed up in North Haven, CT...it is still opened today. For the longest time, they were the only game in tyown. They had the lay-down beds and much hi-tech that was around at the time.
I've tanned at least 600 hours for a 60 contest career.
My skin is not the best, but did not really suffer any significant damage from the beds.
There is actually some good to say about the healing effects of heliotherapy
Mike