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Keira Knightley
For years, Keira Knightley has been dying her hair for various roles. We have witnessed the actress’s locks slowly thin as a result of the dye having a taxing effect on her follicles. She said that her “hair literally began to fall out.” In fact, Keira’s hair damage resulted in her having to wear wigs until her hair reverted back to being the healthy and thick hair that she once had.