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When Procter & Gamble introduced Dawn dishwashing liquid in 1975, it came in one version. Today there are 11 Dawns, including antibacterial, hand care, and "PowerPlus." Indeed, P&G has gone so far as to post an interactive quiz on its web site to help you determine which Dawn is right for you.
An equally broad spectrum of products from other manufacturers has left supermarket shelves awash in different formulations, colors, and scents. Yet, despite the variations, dish liquids continue to work in the same basic way: They contain surface active agents (surfactants) that cut grease and help loosen food residue so that you can expend less elbow grease.
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