In our reference data, Coumarin is an EU-declared allergen.
Coumarin is a naturally occurring aromatic compound used in cosmetics primarily as a fragrance and masking agent, valued for its sweet, hay-like scent. It is one of the 26 fragrance allergens that EU regulations require to be declared on product labels.
| Reported effect | How often | Notes |
|---|---|---|
| Allergic contact dermatitis | Uncommon | Recognized fragrance allergen that can cause delayed hypersensitivity reactions in sensitized individuals. |
| Skin irritation | Uncommon | May cause redness or mild irritation, particularly on sensitive or compromised skin. |
| Phototoxicity/photosensitivity | Rare | Limited evidence for photoreactivity; some related coumarin derivatives are more strongly associated with photosensitization. |
| Cross-reactivity with related fragrance compounds | Rare | Individuals allergic to coumarin may react to chemically related fragrance materials. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.