<p>Katty travels to Los Angeles to meet Jane Wurwand, who founded the skincare company Dermalogica. Dermalogica’s products are used in more than 100 countries around the world.</p>

José Andrés

The BBC's Katty Kay sits down for in-depth conversations with some of the most powerful and change making people in the worlds of culture, business and science. From world-renowned chefs and dancers, to the people redefining the way we think about medicine, business strategy and literature, Katty's informal, unscripted interviews reveal the people behind the personas that are inspiring the world today.