Thanks to his eponymous line of products, Christophe Robin has single-handedly transformed the way we take care of our hair and scalps, no fancy salons necessary. As a 14-year-old, Christophe Robin started his career as an apprentice in a hair salon in the small French village where he grew up. A few decades later, Robin is one of the best-known names in hair care, and not just because he has colored some of the most famous manes in the world.…