Glow in the Dark Tattoos...

Some of us were discussing the existence of glow in the dark tattoos last weekend and although I was reulctant to believe that they exist, indeed they do. According to Wikipedia:

UV tattoos or blacklight tattoos are tattoos made with a special ink that is only visible under a blacklight. UV tattoo ink is not commonly known or used, as very few varieties of UV inks are approved for use in the US. It is also many times more expensive than regular tattoo inks. Some people have had reactions to ingredients in the ink, ranging from minor itching to dermatitis. Several UV inks are suspected carcinogens and allergens and at this time, no research has been conducted into the possible side effects of long term exposure. Some UV inks are known to yellow or turn slightly brown with sun exposure.UV inking takes a little bit longer than normal, due to UV inks being a little thinner and harder to work with, and because the tattoo must be wiped and checked under a blacklight frequently during application.

Personally I prefer regular ink, but if you are looking for something to impress people at the next rave you go to, you might just want to consider it.