Coumarin

Science & Benefits

Coumarin is a fragrant organic chemical compound in the benzopyrone chemical class, famous for its sweet odor resembling newly-mown hay or vanilla. Beyond its scent, Coumarin is a documented skin allergen that can trigger systemic or localized inflammatory responses. In sensitive individuals, exposure leads to the release of histamines, resulting in swelling and redness. For those managing acne, this inflammation can exacerbate existing lesions and slow down the healing process of post-inflammatory hyperpigmentation (PIH). It is strictly regulated in many regions due to its known profile as a potent sensitizer in cosmetic applications.