A mild cosmetic cleansing agent includes in a suitable carrier a) 1 to 6 wt. % of at least one anionic surfactant of the following formula (I),in which R1 denotes a linear or branched, saturated or unsaturated alkyl residue having 6 to 30 carbon atoms, at least one of the residues R2 to R5 denotes a C1-C4 alkyl residue, and the other residues independently of one another denote a hydrogen atom or a C1-C4 alkyl residue, and M+ denotes an ammonium, alkanolammonium or metal cation, b) 2 to 10 wt. % of at least one amphoteric and/or zwitterionic surfactant and c) 0.5 to 10 wt. % of at least one non-ionic surfactant and/or at least one non-ionic emulsifier, selected from at least one of the following groups of alkyl (oligo)glycosides, amine oxides and/or glycerol mono- and/or di(C6-C24) carboxylic acid esters, wherein the stated amounts relate to the total weight.