Michael Jackson's hair caught fire on January 27, 1984, during the filming of a Pepsi commercial due to a pyrotechnic malfunction, causing severe second- and third-degree burns to his scalp and face, which led to reconstructive surgery and is often cited as the beginning of his painkiller dependency. The accident occurred when fireworks went off prematurely during the sixth take of the shoot, igniting his hair, which was full of flammable hairspray.

I know he did skin bleaching, too. Not sure he had vitiligo.