But what is it that makes "clean" scents so appealing? (Other than the fact that we can get away with washing our hair less when wearing them.) “Clean scents allow women to communicate themselves in a sharper, more clearly defined way than classical fragrances,” says Burr. “They let us speak much more in our own voices.” Intrigued? Click through to find nine of our favorite so-fresh-and-so-clean-clean scents.