If you plan to reclaim a towheaded youth, however, don't rush in. "Even at the salon, your hair will lighten only so much at one time—push it too far and it turns orangey," says Hazan. "Do a little every month, so you can control the brassiness."
Our December issue features Oprah's Favorite Things—as well as your chance to win them all! You'll also find our easy holiday declutter plan, Dr. Oz's guide to sleeping better (starting tonight) and the ultimate holiday menu.