For gorgeous, glowing skin and a smooth complexion, turn to these crucial skin care ingredients. Like the end product of any recipe, your skin requires quality ingredients for the best results. What are the ingredients that will help your skin look healthy, ward off damage, and stay young? Below, top dermatologists reveal the five superstar ingredients your skin needs to look its best. Alpha Hydroxy Acids Typically, healthy skin is also well buffed from exfoliation, which helps remove dead skin cells and ushers new ones to the surface. Dermatologists recommend using a form of alpha hydroxy acid because it encourages exfoliation and “stimulates fibroblasts to produce collagen and elastin, which strengthen the skin,” says Jennifer Linder, MD, an assistant professor of dermatology at the University of California at San Francisco. Even sensitive skin can benefit, by using lactic acid. “It reduces bacteria, acts as a humectant, and is also beneficial for those who have h...