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These Hair Mistakes Might Be Aging You

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November 24, 2008 - Amy Sussman/Getty Images North America more pics like this »
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23. Over-Styling Your Layers
Layers are great because they add volume and movement to your hair. But you don't want to go to the extreme and over-style your layers. While flipping them out helps to add some volume, going overboard can make you look old-fashioned.