Sun beds

Know they're bad for you but just out of interest what way would they Sway?

I am interested in the answer to this as well!

Some tanning beds are designed to emit ions in addition to tanning you, you need to ask the individual place where you tan because there are some that emit positive (sway blue) and some negative ions (sway pink).

Tanning beds are not great sources of Vitamin D though because the Vitamin D comes from UVB light rather than UVA. Since UVA light is what makes you get tan, the beds are designed to emit the UVA light and not as much of the UVB light as in sunshine, so you don't get as much Vit. D as you do from the sun.

Thanks for the reply :-)