Vitamin C is a common skin-brightening ingredient, and your favorite citrus fruits—lemon, lime, grapefruit, and orange—are loaded with it. New York City facialist Cecilia Wong suggests mixing grapefruit, lemon, and lime juice with carrot oil and applying the mixture to your face for 8-10 minutes.
"It's a great anti-aging and brightening mask," she says. "It's good for sun damage and pigmentation." For even more skin-brightening power, she likes to add a teaspoon of pearl powder, an ingredient that's common in Chinese medicine, to the mix.