Kathy FieldsKatie Rodan, M.D., is an associate clinical professor of dermatology at Stanford University School of Medicine. Kathy Fields, M.D., is an assistant clinical professor of dermatology at the University of California-San Francisco. Both hae been profiled in Best Doctors in America, and their work has been featured in numerous national magazines and television shows. For more information, you can visit the authors' websites at www.unblemished.com, www.rodanandfields.com, and www.proactiv.com. Read More Read Less