This book is a comprehensive textbook about cosmetics and personal care products; reviewing basic concepts, ingredient selection, formulation technology, and testing. The approach is suitable for both students and also people in the industry who are either new to formulations or would like to refresh basic knowledge. Designed as an educational and training text, the book provides a clear and easily understandable review of cosmetics and OTC drug-cosmetic products available in the United States. In the new edition, the author expands some general concepts and adds a few new chapters - testing basics, ingredients, skin lightening products. In addition, an abbreviations summary begins each chapter and the (previously) end-of-chapter questions are longer and placed online with the solutions manual for instructors.