Yeah, I am using it and have been for a long time. The tanning effect is incredible, if you combine it with Solarium it will work faster, but ofcause you expose yourself to UVH, but who cares =D. I usually mixed 10mg with 2 ml of water and used 0.2ml a day for 10 days, then when I had achieved the tan degree that I wanted, I took 0.1ml every 2-3 days, depending if i started to get darker/lighter, I would adjust frequency.
When it comes to libido it is insane. Its 10 times as effective as cialis, viagra and the likes. It does not boost your staying power, but your entire mindset, making you very horny. If you give some to your wife... she gets horny too... So do as me and my wife, get tanned, and fuck a lot! =D