JOURNAL OF COSMETIC SCIENCE 224 Chapter 8 is a review of the use of phys- ical methods in the transdermal delivery of peptides and proteins. This is followed by a chapter describing experience with immu- nization by topical administration, using physical methods to enhance delivery. The fi nal chapter describes commercial devel- opment, and provides information about products under development as well as marketed products. Each chapter contains an extensive lit- erature review. A person interested in any of the physical methods described would fi nd this book an excellent source to gain perspective and a general understanding of the technique’s applications and limita- tions. The treatments of iontophoresis and microneedles are particularly complete. Although this book emphasizes drug delivery rather than cosmetic applications, some of the physical methods may be use- ful in the development of products for cos- metic treatment.—JOEL ZATZ—Rutgers University.