The present disclosure relates to textile care agents and to optically clear and transparent fabric softener formulations which also have a viscous consistency, containing a combination of special ester quats with nonionic emulsifiers and cationic thickeners, to the use of said textile care agents and fabric softener formulations. The present disclosure also relates to a method for washing textiles using said textile care agent and fabric softener formulations. The present disclosure relates to methods for producing the special ester quats, to the thus resulting ester quats and to the use thereof.