Ambroxan

Ambroxan (and its close cousins Cetalox, Ambermax) is the single most-used base molecule in contemporary perfumery. It's a synthetic analog of ambergris (the rare animal-derived amber material) with a clean, slightly sweet, mineral-skin character. Modern designer fragrances often use ambroxan at 5–15% of the formula because it: extends longevity, adds projection without weight, and gives the dry-down a recognizable "smells expensive" finish. If you've ever thought a fragrance smells "clean but warm and almost like skin," you were probably smelling ambroxan. Dior Sauvage built its empire on a heavy ambroxan note.