I used it. It isn't a joke, be prepared to turn unnaturally dark. Far darker than you could ever become on your own no matter how much you tan. People will look at you like a freak. A Pakistaini trapped in a white mans body.
I noticed no sexual boost or sexual decrease. First few days of using it, I got very very slightly nauseous about 30 minutes after inject. Not bad at all, but noticable. So dose light and build up.
Don't worry about what the guy above me said by making it "work faster." I mean, I'm not saying what he said was wrong or bad advice,but the shit works plenty fast on its own. Any faster and people will REALLY wonder about you. Lasts quite a while, nice gradual fade. Dick gets very dark.