This book is devoted to a broader understanding of liposomes as a versatile tool used in many domains, including basic research and applied technology, focusing on less common applications and recent developments. Over the past few years, new types of liposomes made of nonphospholipid molecules have opened new perspectives in applications. These lipid vesicles, already used in cosmetology, are being manufactured for industrial and agricultural uses. However, "Stealth" liposomes, pH-sensitive liposomes, and cationic liposomes have enlarged and improved the application field of liposomes in clinical research. The book covers these different uses of liposomes with particular attention to new formulations and new applications.