On this week’s How On Earth, Beth spoke with two cosmetic chemists, hosts of the podcast The Beauty Brains. We touched on some basic questions I have regarding some of the universe of products, such as shampoos, body lotions and sun screens. Beauty Brains Perry Romanowski and Valerie George, are both veteran cosmetic product developers who have worked on some of the most popular beauty products in the world. They’ve written dozens of science articles and books. Their book, Beginning Cosmetic Chemistry is used in several college programs. You can find transcripts of their podcast episodes on their website.

Executive Producer: Susan Moran

Listen to the show: