Hollywood Hair Secrets

So we all know that stars' tresses are usually perfectly shiny, bouncy, and beautiful on the red carpet and onscreen, but how do celebs maintain their locks when they don't have a friendly Hollywood stylist at their beck and call? Find out how stars including Olivia Wilde, Leighton Meester, and Kate Walsh keep their hair healthy and shiny all year round on this episode of "The Thread."

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