Two cases of photodermatitis from dibromsalan (4′,5 dibromosalicylanilide), an ingredient of a popular proprietary soap, are reported. The reaction is photoallergic in type. In the cases studied, tribromsalan (3,4′,5 tribromosalicylanilide) was not a photosensitizer.
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James F. Molloy (1966) studied this question.