Be a clean freak (kind of).
At the very least, use cleansing wipes before bed; if you don't take off your makeup, it can trap aging free radicals against your skin overnight, says Howard Sobel, a dermatologist in New York City. (Try Neutrogena Makeup Remover Cleansing Towelettes.) A cleansing brush can remove pollution and dirt from your skin while it exfoliates; the Foreo Luna has silicone nubs that get the job done with irritating skin.