A Selection of the Scientific American Book Club Explaining why antifreeze is a component of toothpaste and how salt works in shampoo, this fascinating handbook delves into the chemistry of everyday household products. Decoding more than 150 cryptic ingredients, the guide explains each component's structural formula, offers synonymous names, and describes its common uses. This informative resource can serve curious readers as a basic primer to commercial chemistry or as an indexed reference for specific compounds found on a product label. Grouped according to type, these chemical descriptions will dissolve common misunderstandings and help make consumers more product savvy.