:Cocamidopropyl hydroxysultaine

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| ImageFile = Cocamidopropyl hydroxysultaine.svg

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| ImageCaption = n = 6, 8, 10, 12, 14, 16

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| OtherNames = N,N-Dimethyl-N-(3-cocamidopropyl)-3-ammonio-2-hydroxypropylsulfonate

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| CASNo = 68139-30-0

| EINECS = 268-761-3

| UNII = 62V75NI93W

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Cocamidopropyl hydroxysultaine (CAHS) is a synthetic amphoteric surfactant from the hydroxysultaine group. It is found in personal care products (soaps, shampoos, lotions etc.).{{cite journal |journal=Contact Dermatitis |year=2000 |volume=42 |issue=5 |pages=284 |title=Reaction to cocamidopropyl hydroxysultaine, an amphoteric surfactant and conditioner |author=Guin JD |pmid=10789849 | doi = 10.1034/j.1600-0536.2000.042005276.x}} It has uses as a foam booster, viscosity builder, and an antistatic agent.