Black Light Tattoo

Unlike ordinary tattoos, it can not be seen usually, only when it is under a black light, it emerges. In this case it should not be refused entry in the super public bath.
Normal time

Black light under

For other examples, see the following site, it seems to do something fun to put on the skinhead.

Tattoo Art> UV Blacklight Ink - Tattoo Artists.org
http://www.tattooartists.org/Gal3975_UV_Blacklight_Ink.asp