A warm, skin-like base note that gives a fragrance its lasting "closeness" to the body.
Origin
Originally derived from the musk deer, modern musk in perfumery is almost entirely synthetic (white musk, ambrette-derived, or musk ketones) for both ethical and practical reasons.
Character
Soft, warm, and slightly powdery — musk is often described as smelling like "clean skin," and it is the note most responsible for a fragrance's longevity in its final hours.