We report a case of allergic contact dermatitis due to alcamphor present in a flushing solution used by a 58-year-old woman. It is the first case described in our Division of Allergy and the second one reported in the literature. Alcamphor is a chemical substance present in many products that may have been underestimated as the causative agent of contact allergic dermatitis as the allergen is not available in the standard patch test batteries.