>>15972>>16107He had severe vitiligo, confirmed by his autopsy report and visible in certain photographs. Lots of people still believe the tabloids that say otherwise, though.
I don't think any product that can make you go from black to white like he did exist, there are just products that remove and prevent suntan to make you a bit lighter. Kojic Acid is one of them.
Lemon works too BUT it causes photosensitivity and sunburns, so avoid using it if you're already sensitive to the sun and make sure you only use at night, either way.