Anyone who's tried MT2 knows the benefits. A nice even tan, an increased libido... But, what can go wrong you ask? I've ordered from a "reputable" company touting their MT2. I personally think it was either MT1 or PT141 because there were no libido changes. & to top things off, there was no nice tan. All I got was minimally darker and terrible blotches that looked like the plague all over my face. I just thought I'd warn people about not knowing what they're getting. It takes a lot of trust to use a basically unlabelled product. I wish you all luck. I haven't dared try again.