Fragrance
4,6-Dimethyl-8-tert-butylcoumarin, when used as a fragrance ingredient
Safety score · 0–100
Caution
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A substituted coumarin in the family historically linked to severe photocontact allergic reactions. Listed under EU Annex II as prohibited in cosmetics — should not appear in compliant products.
Skin benefits
- Provides warm, hay-like fragrance note
Known concerns
- Tert-butyl coumarins photoallergens (cf. 7-methylcoumarin)
- Documented phototoxicity in coumarin family
- EU Annex II prohibited fragrance substance
- IFRA Standard prohibition
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related fragrances
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.