Keira Knightley opened up about her hair loss struggles in a new interview released on Saturday — revealing her need to wear wigs over the years.

Keira Knightley Opens Up About Her Hair Loss, Admits She Wore Wigs

Knightley, 31, recalled the many times she had to dye her hair for different film roles, and explained that after a while, her hair could no longer handle the constant changes.

“I have dyed my hair virtually every color imaginable for different films,” Knightley told InStyle magazine. “It got so bad that my hair literally began to fall out of my head.”

“So for the past five years I’ve used wigs,” the actress shared.  “Which is the greatest thing that’s ever happened to my hair.”

Fortunately, after becoming pregnant with her daughter Edie, Knightley realized that her hair began to grow back to its natural thick and full form.

Knightley’s upcoming film Collateral Beauty premieres in December, and she will reportedly star as the Sugar Plum Fairy in a new Disney live-action version of The Nutcracker.