I use it quite often it's very good stuff..if you are active in the sun you really don't need much of it because the sunlight will actually activate it and make it more aggressive but in your favor.. use it moderately because you can become dark as a Guatemalan.
I get extremely extremely dark.. one of the only downsides is the fact of random boners and no I don't look at that as an added bonus because they happen at the worst possible timing.. limbido is through the roof so that part is great..
I suggest taking it at night time so you can sleep through some of the side effects like nausea and stuff like that
There is no need to do a loading phase either