Here's the thing about really versatile fragrance notes: they should never be static. For example, I want a rose to smell different depending on what type of fragrance it's used in—in some scents, it should smell sharp and young, while in others, it should smell sweet and warm. No matter what, however, a rose scent should always be unmistakably rosey.
This is the case for any universally blendable fragrance notes, but it's particularly true for vetiver, a note you've likely seen crop up in many different fragrances. Vetiver is a grass native to India and Southeast Asia. Depending on what region of the world it comes from, the way it smells can vary quite a bit—some can be clean and fresh, while others can be smoky and deep. It always adds a crisp, earthy greenness to scents, and it's a calling card for cool people everywhere.