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Evernia Prunastri (Oakmoss) Extract

Evernia Prunastri Extract · Evernia Prunastri (Oakmoss) Extract · Evernia Prunastri

Oakmoss lichen extract used as a mossy fragrance base note; an EU-declarable allergen whose main allergens are now banned.

What it does

Evernia prunastri is an extract of oakmoss lichen, long used in perfumery for a mossy, woody, earthy base note. In European patch-test data it is one of the most frequent causes of fragrance contact allergy. Two of its natural constituents, atranol and chloroatranol, carry most of that allergy risk, and Commission Regulation (EU) 2017/1410 prohibited both — so oakmoss extract itself stays on the EU's declarable-allergen list but can only be used in the EU in a purified, atranol-free grade. Outside the EU there is no such requirement. It is a scent ingredient with no skin function.

The evidence, graded

expert consensusTreemoss (Evernia furfuracea), oakmoss (Evernia prunastri), and HICC (Lyral) were the three most frequently positive of the EU's 26 fragrance allergens in a 1,508-patient patch-test series. Commission Regulation (EU) 2017/1410 prohibited HICC, plus atranol and chloroatranol — the constituents behind most oakmoss and treemoss allergy — from 23 August 2019 for new EU products and 23 August 2021 for stock already on shelves.Heisterberg 2011 · Contact Dermatitis ↗

Graded per the methodology: strong · moderate · emerging · expert consensus. A weak source on a strong claim gets the weaker label.

Also known as

oakmoss, oak moss, oakmoss absolute, mousse de chene

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