Michael travels to Los Angeles to meet a 71-year-old great-grandmother with amazingly line-free skin, and in Sacramento, he learns about a study that reveals how chemicals in mangoes can visibly reduce wrinkles. In New York, Michael meets a scientist who's discovered that we can delay the onset of grey hair by reducing harmful levels of stress, and in Beijing, a group of models in their 60s and 70s show how our faces contain important information about our health.
