Cate Blanchett used to dye her arm hair.
The Carol star admits she tried the bizarre technique in a bid to hide her arm hair but ended up with copper orange and purple patches on her skin as a result.
When asked about her worst hair mistake by Allure magazine, she admitted: "Bleaching my arm hair in high school - it was copper orange in patches and purple in others. Never again."
Meanwhile, the 46-year-old actress previously revealed she lost some of her hair from stress when she played Blanche DuBois in Broadway show A Streetcar Named Desire.
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