The invention provides fabric conditioning compositions, which include as the conditioning agent, one or more quaternary ester ammonium salt compounds, which include a mixture of quaternary mono-, di- and tri-ester ammonium salt components, wherein the amount of quaternary diester ammonium salts is greater than about 40% by weight, and the amount of quaternary triester ammonium salts is less than about 20% by weight based on the total amount of quaternary ester ammonium salts. The composition contains a high level of quaternary diester ammonium salt content, and low level of quaternary triester ammonium salt content.Linvention porte sur des compositions de conditionnement de tissus qui comprennent, en tant quagent de conditionnement, un ou plusieurs composés sels esters dammonium quaternaire, qui comprennent un mélange de composants de sel mono-, di- et tri- esters dammonium quaternaire, la quantité de sels diesters dammonium quaternaire étant supérieure à environ 40 % en poids, et la quantité de sels triesters dammonium quaternaire étant inférieure à environ 20 % en poids par rapport à la quantité totale des sels esters dammonium quaternaire. La composition contient un taux élevé de sels diesters dammonium quaternaire, et un faible taux de sels triesters dammonium quaternaire.