Commercially available chemicals used for patch testing are the main focus of this book. It is the first book which provides a short and concise explanation to physicians, patients, and employees on how to minimize allergic contact dermatitis when patch testing is completed. The second book of this mini-series, "Patch testing and Prick testing" covers the new standard of patch testing and prick testing procedures in an efficient and practical way. Both of these well-structured books should not be missed by any physician in daily practise when treating patients with dermatological problems.