Beschrieben werden konzentrierte Fettalkoholsulfatzubereitungen, die mehr als 35 Gew.-% an Fettalkoholsulfat (FAS) enthalten. Die Mittel sind wässerig, enthalten aber neben dem FAS noch Polyole und/oder oder Fettsäurealkylamide und/oder öllösliche Betaine. Sie eignen sich zur Herstellung von Wasch- und Reinigungsmitteln, aber auch zur Herstellung kosmetischer Mittel, insbesondere von Zahnpflegemitteln.Agent comprises: at least 35 wt.% of one or more fatty alcohol sulfates (I) at least a polyol, fatty acid alkylamide and/or betaine and water. Agent comprises: at least 35 wt.% of one or more fatty alcohol sulfates of formula (R 1>O-SO 3X) (I) at least a polyol, fatty acid alkylamide and/or betaine and water. R 1>6-22C, preferably 12-18C-aliphatic alkyl and/or -alkenyl and X : alkali- and/or alkaline earth-metal, ammonium, alkyl ammonium, alkanol ammonium or glucammonium. An independent claim is included for preparing a preparation containing at least 35 wt.% of (I), comprising continuously adding a mixture of water and polyol or oil soluble betaine to a non-neutralized (I) together with a quantity of alkali, where: the volume ratio of water to polyol or oil soluble betaine is 3:1-1:3 the quantity of alkali is selected in such a way that (I) is completely neutralized and the mixing of the mixture with the non-neutralized (I) and alkali, is continued until at least a concentration of neutralized (I) is reached to 35 wt.%.
