You know pollution isn’t good for you. Scientists have connected it with respiratory problems, birth defects, cancer, and more. But did you know that your exposure to pollution could also make you look older? In 2010, the Journal of Investigative Dermatology published a landmark study connecting pollution to skin aging. Researchers examined 400 Caucasian women aged 70 to 80 years, and gave them scores based on how much their skin had aged.