Coumarin

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Coumarin, a crystalline powder with a hay-like scent, is an organic compound found in high concentrations in many plants but also produced synthetically.

It is a fragrance contained in many fragrances used to make cosmetic products of all kinds more pleasant. In particular it is used in perfumes and insect repellent products.

Given its sensitizing capacity, coumarin is included in the list of 26 perfumed substances considered potentially allergenic, which by law must be listed on the label when their percentage exceeds 0.001% in products that remain on the skin and 0.01% in products flushing.