Allure Cover Girl Rachel McAdams's Beauty Secrets

by Jenna Rosenstein

Carter Smith for AllureCarter Smith for Allure Mean Girls, The Notebook, Sherlock Holmes--you're probably familiar with some of Rachel McAdams's most "fetch" beauty looks. But you probably didn't know about her secret weapon: Her sister Kayleen McAdams is a celebrity makeup artist. "Even though I'm the older sister, I totally defer to her," McAdams told our writer Brooke Hauser. The star opens up about Regina George, Ryan Gosling, and her newest films in our August issue. But here, her best beauty secrets:

Her skin-care secret: "I use a seaweed mask [Fresh Sea Plant Mask] by Chicet that I really love. It dries, and then it's really fun to pick off the pieces of seaweed, which is totally disgusting, and I can't believe I just told you that."

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Her favorite hair products: "Right now, I'm using Lavera. It's the Rose Milk line, which I just love the sound of."

Her biggest hair mistake: "It would be from the figure-skating days. That was the '80s, so it was the bangs--you curl it in really tiny, tiny, tiny curls, and then you tease it, and then you spray it with this stuff called Ice Mist, and you could practically break off your bangs."

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Her mother's best beauty advice: "She always thinks my sister's and my mascara is too black. I've finally heeded her advice, and I'm now wearing brown. It goes better with light eyes, blue eyes. But I love a thick black. I just love to whack it on."

Her biggest makeup mistake: "I went through a period where I'd wear stickers or have sort of temporary face tattoos. [Kayleen] put me in my place. She was like, 'You have to stop that.'"

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