26 Beauty Habits to Break Right Now

You already know that the pigments in a glass of Pinot Noir will almost instantly give a dark purple cast to your teeth (and lips and, on a very bad day, your blouse). But a crisp white wine also poses a risk to your smile. "White wines are generally more acidic than reds; the high acid content erodes tooth enamel, which leaves teeth vulnerable to stains," says New York City dentist Irwin Smigel, creator of Supersmile. In other words: While you're enjoying a Riesling, steer clear of the marinara sauce. And afterward, or between sips, have some water and bread to reduce the acidity in your mouth. — Jenny Bailly