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Bark is a natural note category in perfumery encompassing the diverse scents of tree bark from various species. Each bark has its own character: birch bark is smoky-leathery (methyl salicylate, betulin), cinnamon bark is spicy-sweet (cinnamaldehyde), oak bark is tannic-astringent, and pine bark is resinous-balsamic.

What unites bark notes is their position at the tree's interface with the outside world: tougher, drier, more protective than the living sapwood beneath. Bark contains higher concentrations of tannins, suberin, and defensive compounds than interior wood. These chemicals produce scents that are more astringent, more bitter, and more complex than heartwood.

In perfumery, bark notes function as heart-to-base modifiers in woody, forest, and naturalistic compositions. They provide a specific roughness and texture that smooth wood notes lack. The category bridges the gap between clean wood notes and raw, outdoors-realistic compositions.

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Related: Alder · Alpha Humulene · Amaranth · Amberever · Amburana Bark · Antillone · Apple Tree