The note presents a complex, often challenging olfactory profile, instantly recognizable yet deeply abstract. It can manifest as sharp, somewhat metallic, with an inherent dryness that borders on arid. There's frequently an underlying warmth, evoking the scent of hot asphalt after a summer rain, or the distinct aroma of new tires on a pristine showroom floor. At its most intense, it can be smoky, tarry, and almost burnt, with a subtle chemical piquancy, hinting at petrol or industrial solvents. However, in skilled hands, it can be softened, revealing unexpected leathery nuances, a pliable texture that feels smooth and slightly yielding. Its projection is typically bold and direct, designed to make an impact, though it can also be woven into the background as a textural element. Longevity is often considerable, particularly when used as a base or heart note, evolving from its initial sharp intensity to a more muted, smoky, or even subtly sweet resinous dry-down.