Oakmoss is a rich, earthy-green note extracted from Evernia prunastri, a lichen that grows on the bark of oak and other trees. Deep, damp, slightly sweet and leathery, it is the defining base note of the chypre family and a key ingredient of traditional fougères, though its use is now tightly restricted.

What does Oakmoss smell like?

Oakmoss absolute smells like a forest floor after rain: dark, damp and earthy, with a salty, seaweed-like tone, a leathery warmth and a faintly sweet, hay-like facet. It has an inky, almost bitter quality and a powerful fixative effect. Compared with treemoss, which is sharper and more resinous, oakmoss is softer and rounder. Modern low-atranol oakmoss is lighter and slightly less nuanced than historic grades, which many perfume lovers say is why vintage chypres smell deeper.

Where Oakmoss comes from

Oakmoss is hand-gathered from trees in the Balkans, Morocco and France. The lichen is solvent-extracted into a waxy concrete, which is then washed with alcohol to make an absolute, the form used in perfume. Today the extract is also processed to remove most of its atranol and chloroatranol.

• Also known as: Evernia prunastri, Mousse de chêne
• Fragrance family: Chypre, mossy
• Type: Natural (often supported by synthetic moss materials)
• Main origins: The Balkans, Morocco, France
• How it's obtained: Solvent extraction to a concrete, then an absolute
• Key aroma molecules: Methyl atrarate (methyl beta-orcinol carboxylate), atranol and chloroatranol (now reduced)

Oakmoss in perfume history

Oakmoss is behind two of the great families of modern perfumery. Houbigant's Fougère Royale (1882) combined it with lavender and coumarin, while Coty's Chypre (1917) paired it with bergamot, labdanum and patchouli. The chypre style that followed, from Guerlain Mitsouko to post-war classics, depended on oakmoss for its dark, velvety base.

Oakmoss in modern perfumery

Because oakmoss can cause skin allergies, IFRA restricted its use and the EU banned atranol and chloroatranol in cosmetics, with products containing them withdrawn from sale from 2021. Perfumers now use low-atranol oakmoss at small doses, supported by methyl atrarate (Evernyl, Veramoss) and patchouli. Many classics have been reformulated, and "modern chypres" often use patchouli rather than moss as their base.

How Oakmoss wears and what it pairs with

Oakmoss is a base note with excellent staying power. It pairs with bergamot, labdanum, patchouli, rose, jasmine, lavender, vetiver and leather.

Fragrances featuring Oakmoss

• Coty Chypre (1917)
• Guerlain Mitsouko (1919)
• Dior Miss Dior (1947)
• Clinique Aromatics Elixir (1971)

Safety and regulation

Oakmoss extract is a listed allergen that must be declared on EU labels, IFRA limits its use, and EU rules have prohibited the lichen components atranol and chloroatranol in cosmetics, with new products barred from 2019 and all sales ended from August 2021.