The present disclosure relates to compositions for preparing textile auxiliaries, which are used in particular to enhance the dyeing affinity of textile fibers. The disclosure concerns a composition in the form of an aqueous emulsion or solution which comprises (a) one or more hydroxyalkylamines of formula: NX1X2(CnH2nOH), where X1 and X2 are, independently of one other, either hydrogen or hydroxyalkyl radicals of respective formulae Cn1H2n1OH and Cn2H2n2OH, and n, n1 and n2 are integers from 2 to 6, and (b) one or more anionic surfactants selected from alkyl sulphates, alkylsulphonates such as paraffinsulphonates, alkylarylsulphonates, alkyl ether phosphates, and alkyl carboxylates, and at least one compound (c) and/or (d), where (c) is selected from one or more thioureas (thiocarbamides) of formula R1R2N(CS)NR3R4, where R1, R2, R3 and R4 are independently either hydrogen or hydrocarbon radicals having 1 to 5 carbon atoms, and (d) is selected from one or more dialkyl sulphosuccinates in combination with one or more anti-freeze agents selected from methanol, isopropanol, glycols, preferably glycerol, ethylene glycol, propylene glycol or glycol ethers, preferably ethers of ethylene glycol or of propylene glycol.