Answers at your fingertips! This up-to-date, thorough resource and reference for assessing product ingredients, quality, and their effect on the skin, hair, and nails takes the guesswork out of cosmetic ingredients and their functions. Features: -Complete information on skin physiology and chemical concepts, enabling you to

better understand product performance -A thorough explanation of how chemicals and ingredients interact in cosmetics -The various skin types, conditions, and appropriate ingredients for treatments

providing you with a quick reference to address clients' needs -Simple, practical and useful information to help decipher product labels in order to

determine product value and effectiveness