Baby oil, which does not contain any sunscreens or sun blocks, heats up under the sun and essentially “cooks” the outer surface of the body, in much the same way as meat is browned in a skillet.
The FDA does not recommend Melanotan, but people don't seem to care
Melanotan gives you a golden tan, increases your libido and decreases your appetite. These "benefits" seem to make many ignore the risks. Read more about the hormone here.