The present invention relates to a composition comprising, based on the finished composition, a) 40 to 60% by weight of at least one quaternary compound according to formula (1), wherein R1 is an unbranched or branched alkyl or alkenyl group having 12 to 36 carbon atoms, a group R5CONH(CH2)n- or a group R5COO(CH2)n-, where R5 is an alkyl or alkenyl group having 12 to 36 carbon atoms and n is a number from 1 to 8, and R2, R3 and R4 are independently of one another, may be identical or and are a— CH3, CH3CH2-,CH2CH2CH2-, CH2CH2CH2CH2-, -CH2CH2OH, or -CH2CH(OH)CH2OH group, and X- is an anion selected from the group consisting of chloride, iodide, bromide, methosulfate,hydrogensulfate, lactate, citrate, carbonate and bicarbonate or mixtures thereof, and b) 15 to 25% by weight of at least one glycerol monoester selected from the group consisting of glycerol monoester of a C12-24 fatty acid, and c) 25 to 35% by weight of a mixture of fatty alcohols having 10 to 20 carbon atoms, characterised in that said mixture of fatty alcohols comprises: (ca) at least one fatty alcohol having 10 to 14 carbon atoms, and (cb) at least one fatty alcohol having 16 to 20 carbon atoms, wherein the weight ratio of (ca) to (cb) ranges from 1,0 to 1,5. The invention further relates to the use of the compositions for the preparation of cosmetic, dermatological and hair-treatment compositions.La présente invention porte sur une composition comprenant, sur la base de la composition finie, a) 40 à 60 % en poids dau moins un composé quaternaire répondant à la formule (1), dans laquelle R1 représente un groupe alkyle ou alcényle non ramifié ou ramifié ayant 12 à 36 atomes de carbone, un groupe R5CONH(CH2)n- ou un groupe R5COO(CH2)n-, R5 étant un groupe alkyle ou alcényle ayant 12 à 36 atomes de carbone et n étant un nombre allant de 1 à 8, et R2, R3 et R4 peuvent être identiques les uns aux autres ou différents des uns des autres et représentent chacun indépendamment un groupe —CH3, CH3CH2-, CH2CH2CH
