There is a chemical called hydroquinone that bleaches skin very evenly and effectively. Vitiligo, the condition Jackson claims to have, without exception causes random patches of skin to turn nearly white. The result is very blotchy and noticeably mottled skin.
Look at Jackson's skin and judge his claims of vitiligo accordingly.
OK Thanks for answering my question. I never did believe that it was the vitiligo disease like he said when he lied to Barbara Walters during the interview. He had the money to do something about it and he didn't want to be a black person.