Why would there be any? If it's just visible light, there will be no harm done. Also, the way I see it, it's not burning the hairs, so it won't smell. Still needs some proper real world testing, through. At this point it may as well be vaporware.
But can I shave my balls with it?
They must have a certain amount of faith in the technology to have tested the variety of head/handle combinations that you see in the video.
They said the same thing about tanning beds too.
* Nearly everyone is better educated then we are
Awesome unless you have an issues with heights...
It's not the glass bridge that cracked, though - apparently, the Chinese are building these things at a rate similar to the one they use for their high-speed rail lines.
^video has been deleted