The editors are all leading scientists and practitioners in the field of contact dermatitis. They cover a broad span of expertise and have a vast experience. Jeanne Duus Johansen is professor in cutaneous allergy, has published more than 400 scientific papers on the subject and is the editor of several books. Vera Mahler is professor of Dermatology at the Friedrich-Alexander-University Erlangen-Nuremberg. At the Department of Dermatology she in charge of the Allergy Unit including the patch test clinics and clinics for occupational skin diseases. She is president of the German Contact Dermatitis Society (DKG) and coordinator of the evidence-based German patch test guideline and member of the Executive Committee of the European Contact Dermatitis Society (ESCD). Her research activities include research on understanding the clinical risk factors, prevention strategies and molecular interactions in (protein) contact dermatitis, contact urticarial and occupational skin diseases. Jean-Pierre Lepoittevin is professor of organic chemistry at the University of Strasbourg. His research activities include research on understanding the molecular interactions between chemicals present in our environment (cosmetics, preservatives, drugs, natural products etc.) and skin, in relation to toxicological problems such as cutaneous allergy.Peter Frosch is professor emeritus of dermatology at the Department of Dermatology, Klinikum Dortmund and University of Witten/Herdecke. He is founding editor of this textbook, has edited 4 more monographs in the field of contact dermatitis and recently published a practical guide focusing on occupational dermatitis (in German).