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These Hair Mistakes Might Be Aging You

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July 12, 2015 - Rob Kim/Getty Images North America more pics like this »
6. You Have No Highlights
Not everyone colors their hair. But if you do color your hair, try to avoid going with just one tone all over. Whether it's a dark hair color or blonde shade, skipping highlights can make your hair look flat and severe.

Highlights help to give your hair movement, brighten your complexion, and frame your face beautifully. They are like contouring for your hair, and those highlights can make your hair appear fuller, more vibrant, and younger. One flat color can wash you out.