Check this out from the NYDailyNews:

If you want to see Lil Wayne’s latest tattoos, you’ll need to turn out the lights.
In the much-marked hip-hop star’s recently released video to accompany for his upcoming EP “I’m Not a Human Being”, he shows off his latest glow in the dark tattoos – visible only with a black light, reports EW.
And he wants people to know that the smattering of glowing green stars on his face and the lipstick kiss on his neck are real.
In the behind-the-scenes footage released yesterday, he says, “I want everybody to know beforehand, when you see the black light and you see the kiss and the stars, don’t think that I got some s— painted on me. The s— hurt.”
“The best thing about the black light tattoo is that when you cut the light on, you can’t see them,” he adds.
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This article from lookatvietnam looks at the stories of young Vietnamese getting UV tattoos:
Luminescent tattoos or UV tattoos have become the “fashion” among young Hanoians. It differs from normal tattoo only in that the normal ink is replaced by imported luminescent or UV ink.

The people with UV tattoos like going to discotheques and clubs to show off their tattoos because under ultraviolet lights, their tattoos shine.
A VNExpress reporter met several young people at a tattoo shop in Hanoi. They had paid a deposit to book the tattoos they liked.
“It is hard to find a tattoo shop like this where we can get UV tattoos, explained a girl named Lan Anh. The shop owner learned in France and his equipment is clean. Many people like tattoos, but they don’t dare use UV ink.”
A girl named Hoa acknowledged that “Tattoos are art so there is no specific price.” She pulled up her sleeve to show a new tattoo featuring a 10cm pattern and bragged, “This costs me 900,000 dong. So cheap! It would usually be 1.5 million dong!”
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Have you got more? Let us know in the comments!
Blacklight Florescent Tattoos

I find these tattoos hot! It’s like two tattoos in one if you get the UV ink around and through a regular tattoo. You have your daytime tattoo and your clubbin’ night tattoo. But, may people just don’t dig the UV light.
If you want a UV tattoo, you’ll need to check with your regular tatoo artists, as not all tattooist will tatto with UV ink. Some believe that it is unhealthy wheres others either 1) don’t care or 2) think it’s safe. (I will go over possible health risk a little further down.)
Many first time tattoos are UV tattoos because they are nearly invisible during the day, if you decide that tattoos just aren’t for you, you really don’t have much to look at unless you’re under black light.
Read more about Tattoo Designs

A bit of white UV ink sets this Playboy Bunny off!

UV inks come in colors that can accent traditional tattooing designs.

A large arm piece with UV accents.

UV ink used to highlight a traditional script tattoo.