Directed towards those developing new technologies in the personal skin care, pharmaceutical, and food industries, as well as their marketing personnel, this volume presents 45 chapters detailing the theory and practice behind as many products, written by those who developed them. The chapters are grouped into basic subjects, including skin fundamentals—which contains three chapters on topical delivery systems, and the physiology and penetration pathways of the skin; encapsulation, with a focus on various microencapsulation techniques; liposomes; particles; emulsions; foams; silicons; and structured systems. Most chapters include tables detailing their formulations, with a list of the associated patents. The authors are scientists with various corporations worldwide.