The authors have presented all the included contents in a detailed manner in a simple and easy to understand language. This book is written with an intention to benefit students, industry professionals and research personnels involved in studying, manufacturing and developing transdermal drug delivery systems. The authors have also included the data of their research work "Formulation and Evaluation of matrix diffusion controlled transdermal patch of glipizide" to provide an illustration. A sincere effort is made to cover all the topics in a detailed yet simple manner. Recent advances in transdermal drug delivery systems have also been included. The authors feel that this book should overcome the need of referring other books for transdermal drug delivery systems.