From oud to orris, these are 10 of the most-used — and best-smelling — fragrance notes in the world, where they come from, and which of our favorite fragrances they're used in.

Can't tell your EDPs from your EDTs? Not quite sure what a “vetiver” is? Here's how to navigate the booming men's fragrance market—and walk away with a scent that feels uniquely your own.