Milla Jovovich(I)

For Das fünfte Element (1997), the production decided to dye Jovovich's hair from its natural brown color to her character's signature orange color. However, due to the fact that her hair had to be redyed regularly to maintain the bright color, Milla's hair quickly became too damaged and broken to withstand the dye. Most of Milla's hair fell out and eventually a wig was created to match the color and style of Leeloo's hair, and was used for the remainder of the production.

I think that's one of the only reasons God created celebrities. To help those who can't help themselves.