I have been using tanning beds for years myself (ya I know I don't want to hear it) At some point I realized that I was getting some kind of rashy bumps every time I went tanning. I don't have any idea if it was the same as what your experiencing... but I did figure out what was causing mine. Of all the sh**... it's the cleaning solution they use to clean the beds with. I ALWAYS wipe down the bed really really well with a CLEAN towel before I get in it. Some places also provide a spray bottle of plain water in the room, I use that as well. All tanning salons are different but in my experience, more often than not when they clean the beds for you they don't do a very good job. Even if they clean the bed well, there is no avoiding leaving a residue of the cleaner behind. A special cleaner is used on the acrylic surface of the beds and whatever it is, it gives me a rash. I would start there and see if that ileviates the problem. If not, I'd go to a dermatologist or quit tanning.