What's better than dedicating one episode of The Science of Beauty to all things K-beauty? Well, dedicating three of 'em, that's what! For the next several weeks, hosts Michelle Lee, editor in chief, and Jenny Bailly, executive beauty director, are taking a deep dive into some of the most important facets of Korean skin care, including layering, hydration, and masking. Along the way, you'll learn practical tips (yes, face oil should be the last product you apply at night) and next-level terms like transepidermal water loss. (You're about to become the unofficial skin-care expert in your group chat.) So grab the nearest sheet mask, then press play on this little preview.