PART I: BASICS OF TRANSDERMAL DRUG DELIVERY SYSTEMS 1. Concepts and Applications in Topical and Transdermal Drug Delivery Karina Alexandre Barros Nogueira, Luiziana Cavalcante Costa Fernandes, Jéssica Roberta Pereira Martins, Aldenor Souza De Oliveira, Lillian Maria Uchoa Dutra Fechine, Pierre Basílio Almeida Fechine, Tamara Gonçalves Araújo, Ivanildo José Da Silva Júnior, Josimar O. Eloy, and Raquel Petrilli 2. Micro- and Nano-Systems in Transdermal Drug Delivery System Nayan A. Gujarathi, Tulshidas S. Patil, Bhushan Rane, Akshay Babu, and Raj K. Keservani 3. Advanced Topical and Transdermal Drug Delivery (TTDS) Used in Skin Diseases and Lesions of the Aging Ana Vitória Pupo Silvestrini, Juliana Santos Rosa Viegas, Marcela Tavares Luiz, Lívia De Queiroz Carvalho Silva, Fabíola Garcia Praça, and Maria Vitória Lopes Badra Bentley PART II: DIVERSE TRANSDERMAL DRUG DELIVERY SYSTEMS 4. Polymeric Micelles in Topical and Transdermal Delivery Alexsandra C. Apolinário and Luciana B. Lopes 5. Microneedles: An Innovative Strategy for Skin Drug Delivery, Diagnostic, and Cosmetologic Approaches Marilisa Guimarães Lara 6. Emulsion, Nanoemulsion, and Microemulsion in Tdds Patrícia Mazureki Campos, Guilherme Dos Anjos Camargo, Ana Beatriz Klosowski, and Priscileila Colerato Ferrari 7. Pulmonary Drug Delivery Systems Nayan A. Gujarathi, Akshada A. Bakliwal, Bhushan Rane, Raj K. Keservani, Tulshidas S. Patil, Meenendra Tripathi, and Gulam Mohammed. Husain 8. Nanoencapsulated Nasal Drug Delivery System Nayan A. Gujarathi, Akshada A. Bakliwal, Bhushan R. Rane, Vasim Pathan, and Raj K. Keservani PART III: MISCELLANEOUS 9. Skin Sensitivity and Irritation Testing for Transposing Transdermal Drug Delivery System Mahesh P. More, Prashant K. Deshmukh, Pravin O. Patil, and Nayan A. Gujarathi 10. Regulatory Aspects of Drug Development for Dermal Products Nayan A. Gujarathi, Akshada A. Bakliwal, Bhushan R. Rane, Vasim Pathan, and Raj K. Keservani