What’s cooler than a secret tattoo that only a few people know about? One that also shines in the dark.

That’s correct, glow-in-the-dark tattoo ink is genuine. And, while the tattoo technique does not provide an ever-glowing design (you’ll need a black light to view it), it does provide a hidden way to add a colorful twist to classic ink.

However, how does it vary from a typical tattoo, if at all? We contacted the experts for further information on the sci-fi-turned-reality skin art.