Photocontact allergy to 6-methylcoumarin.
A proprietary sunscreen-induced photosensitivity reactions in a small number of users. Laboratory study revealed that the reactions were of the photoallergic type and were due to the presence of a synthetic fragrance, 6-methylcoumarin. By photomaximization testing  6-methylcoumarin was found to be a potent photocontact allergen.
D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D010787:Photosensitivity Disorders / Q000139:chemically induced* / Q000473:pathology; D013473:Sunscreening Agents / Q000009:adverse effects*
D013473:Sunscreening Agents