Photoallergic contact dermatitis from the sunscreen octyl triazone

In January 2000, the British Photodermatology Group in conjunction with the British Contact Dermatitis Group started an investigation into topical sunscreens. In addition to already known photo-sensitizers, consecutive patients attending for photopatch testing were tested to a series of newer sunscreens (Hermal Kurt Hermann, Hamburg, Germany). We report the first case of a positive photopatch test to octyl triazone.