I thought they were basically acid burning your skin. That's why I thought they might kind of work. You know, the same way taking a sander to your tattoo will remove it.
http://www.hulu.com/watch/61336/satu...tattoo-remover
http://www.ebaumsworld.com/video/watch/237853/
Can't find a copy on Youtube that doesn't have that damn squeaky voice.