| http://www.w3.org/ns/prov#value | - The compositions for washing keratinous materials, especially the hair and the skin, according to the invention, comprise, in an aqueous medium, at least one silicone, one surfactant possessing detergent properties and at least one alcohol having 27 to 44 carbon atoms and containing one or two ether and/or thioether or sulphoxide group(s), corresponding to the formula (I) ##STR2## in which R1 and
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