An update of Dr. Rieger's comprehensive review of the different classes of surfactants for personal-care products, this reference classifies these versatile ingredients by chemical charge--amphoteric, aninonic, cationic and non-ionic. Each section is subdivided into groups with similar chemical properties. The second revised edition also includes Dr. Rieger's article on surfactant interactions with skin. A popular tool for personal-care product formulators--if you formulate with surfactants, this book is an invaluable aid.