Glowing backstage at Ralph Lauren

If you spend the holiday season eating all the wrong foods, sleeping too little, and celebrating too much, there's a good chance that your complexion is going to look worn and lackluster. But once you begin the right skin-care routine, "you can start seeing superficial improvements, like tighter, smoother skin, in just a couple of days," says Ellen Marmur, a New York dermatologic and cosmetic surgeon. Get going now with our top skin picks

Pictured: Glowing backstage at Ralph Lauren

Read more: Healthy Skin Tips Spring 2013 - How to Get Perfect Skin - Harper's BAZAAR