UVB-only booths were consistently inducing erythema. Also, people were making inaccurate claims regarding the benefits of indoor tanning. Two direct results from prior history are:

1. UVB-only booths are now allowed only for medical use.
2. Both FDA and many state regulations prohibit the usage of the words "safe" and "safer than the sun" in any advertisement. Your state may also prohibit making any therapeutic claims about your tanning equipment. If you use the words "unlimited" or "unlimited tanning," you may be required to define what that means wherever you use the words. Obviously, there have to be some limitations on tanning.