Coumarin
AKA “2H-1-Benzopyran-2-one”
Synthetic
Ingredient Facts
Coumarin
AKA: 2H-1-Benzopyran-2-one
Synthetic · Antioxidant · EWG: 4
Synthetic
Antioxidant
Fragrance
Safety Concern
Synthetic
Clean
A natural fragrance ingredient derived from tonka beans and cinnamon that adds a warm, vanilla-like scent to beauty products.
Formula
C9H6O2
Mol. Weight
146.14
CAS #
91-64-5
Form
Powder
See origin →
Functions
Perfuming
Added for scent. Can be natural or synthetic. Common irritant and allergen — one of the top reasons people react to products.
Antioxidant
Fights free radicals — the unstable molecules from UV, pollution, and stress that break down collagen and cause premature aging.
Traditional Use
Found naturally in tonka beans, vanilla, and other plants, coumarin has been used in traditional perfumery and folk medicine for centuries. First isolated in the 19th century and later synthetically produced; historically valued for its sweet vanilla-like aroma in perfumed cosmetics.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Caution
Skin Perfecting Skincare Set
Acure
Body Lotion
Acure
Body Wash Oil
Acure
Moisture Rich Body Set
Acure
The Skin Smoother Set
Acure
Bathroom Sink Ritual Set
Acure
Farmhouse Sink Duo
Acure
All In: The Farm Collection
Acure
The Body Essentials
Nécessaire
Rejuvenating Night Oil / Extra Healing
Marie Veronique
Retinoic Nutrient Face Oil - 4ML
– Tata Harper Skincare
Tata Harper Skincare
Resurfacing Serum - 10ML
– Tata Harper Skincare
Tata Harper Skincare
Resurfacing Body Serum - 25ml
– Tata Harper Skincare
Tata Harper Skincare
Crème Riche & Retinoic Nutrient Face Oil
Tata Harper Skincare
Bio-Shield Face Oil - 4ML
– Tata Harper Skincare
Tata Harper Skincare
Retinoic Nutrient Face Oil - 4ML
Credo Beauty
Resurfacing Serum - 10ML
Credo Beauty
Resurfacing Body Serum - 25ml
Credo Beauty
Resurfacing Mask - 5ML
Credo Beauty
Rejuvenating Serum - 10ML
Tata Harper Skincare
Coumarin
European Commission
EU Cosmetic Ingredient Database (CosIng)
Coumarin
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
3-(α-Naphthyl)-4-hydroxycoumarin
Health Canada
Health Canada Cosmetic Ingredient Hotlist
4,4'-Dihydroxy-3,3'-(3-methylthiopropylidene) dicoumarin
Health Canada
Health Canada Cosmetic Ingredient Hotlist
4,6-Dimethyl-8-tert-butylcoumarin
Health Canada
Health Canada Cosmetic Ingredient Hotlist
7-Methoxycoumarin
Health Canada
Health Canada Cosmetic Ingredient Hotlist
Dihydrocoumarin
Health Canada
Health Canada Cosmetic Ingredient Hotlist
Furocoumarins, except for naturally occurring in plant extracts
Health Canada
Health Canada Cosmetic Ingredient Hotlist
Antagonists of Vitamin K-Popular Coumarin Drugs and New S...
Kinga Kasperkiewicz, Michał B Ponczek, Jacek Owczarek, Piotr Guga, Elżbieta Budzisz
Molecules (Basel, Switzerland), 2020
Antagonists of Vitamin K-Popular Coumarin Drugs and New S...
Kinga Kasperkiewicz, Michał B Ponczek, Jacek Owczarek, Piotr Guga, Elżbieta Budzisz
Molecules (Basel, Switzerland), 2020
Antagonists of Vitamin K-Popular Coumarin Drugs and New S...
Kinga Kasperkiewicz, Michał B Ponczek, Jacek Owczarek, Piotr Guga, Elżbieta Budzisz
Molecules (Basel, Switzerland), 2020
Development of a comprehensive analytical method for furanocoumarins in grapefruit and their metabolites in plasma and urine using UPLC-MS/MS: a preli
Lee SG, Kim K, Vance TM, Perkins C, Provatas A et al.
International journal of food sciences and nutrition, 2016
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR