Exfoliation means allowing the top layer of skin to be nourished. Put simply, it’s just removing your dead dull-skin and allowing oxygen to penetrate the lower layers of skin. When you hear a doctor say exfoliation shouldn’t happen every day, they’re talking about standard scrubs, which can be like using sandpaper on your skin. Proper exfoliation is best done over time and as a nightly event. Think of it like eating healthy, doing it once or twice a week is good, but a daily routine of healthy eating is the best for your health.