The Best Hair in Your 30s, 40s, and 50s

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30s: Katherine Heigl

"The wonderful thing about being in your 30s is that you free yourself of the uniformity of the 'college dorm' look you had in your 20s," says celebrity stylist Gerry Leddy. You've got more life experience and are more willing to take chances than you were in the previous decade. Katherine Heigl's experimentations with color and various lengths and styles are a perfect example of this. Here, a bold blond shade is glamorous. But beware, warns colorist Angela Cosmai: the upkeep for this bright a color can be timely. She recommends touch-ups once every four weeks.

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