A case of photocontact dermatitis to commercial sandalwood oil, an ingredient in many men's toiletries, is described. Patient reacted on skin testing to a broad spectrum of ultraviolet light. Dermatitis was persistent in spite of the absence of the original sensitizer and minimal erythemal dose was lowered, as in other "persistent light reactors."
Starke JC. Photoallergy to Sandalwood Oil. Arch Dermatol. 1967;96(1):62-63. doi:10.1001/archderm.1967.01610010068010