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Nonoxynol-9, sometimes abbreviated as N-9, is an organic compound that is used as a surfactant. It is a member of the nonoxynol family of nonionic surfactants. N-9 and related compounds are ingredients in various cleaning and cosmetic products. It is widely used in contraceptives for its spermicidal properties. Contents 1 Uses 1.1 Spermicide 1.2 Lubricant 1.3 Condoms 1.4 Cervical barriers 1.5 Shaving cream 1.6 Sports cream 1.7 Poison ivy creams 2 Side effects 3 References 4 External ... [wikipedia]