This classroom-tested reference presents a concise introductory treatment of the physicochemical principles that determine interrelated colloidal and interfacial phenomena and their relevance to various life sciences. The book focuses on concepts that form the basis for understanding this behavior. It deciphers the spontaneous assembly of amphiphilic molecules and discusses the intentional fouling of surfaces for the immobilization of cells in bioreactors. It also devotes special attention to reversible and soft colloids and examines the colloidal domain in a historical perspective, the size and distribution of particles, electrokinetic phenomena, and more.