This book gives an overview of flame retardants, which are either in commercial use or in advanced stage of market development, reviewed polymer-by-polymer, supplemented by a brief overview of mode of action and interaction. It is more of a how-to book rather than an academic study. As such, it names trademarked materials as well as products that are in an active stage of development, gives suggestions for selecting among alternatives, provides suggested formulations, and offers a starting point for the compounder or plastics fabricator to pass commercial flammability requirements.