An aqueous fabric conditioner composition comprising (a) from 2 to 9 wt % of a fabric softening active, by weight of the total composition, wherein the fabric softening active is an ester-linked quaternary ammonium compound having fatty acid chains comprising from 20 to 35 wt % of saturated C18 chains and from 20 to 35 wt % of monounsaturated C18 chains, by weight of total fatty acid chains; and (b) from 0.01 to 0.5 wt %, by weight of the total composition, of a floc prevention agent, which is a non-ionic alkoxylated material having an HLB value of from 8 to 18, wherein the aqueous fabric conditioner composition has a viscosity of greater than 50 cps, preferably from 55 to 200 cps as measured on a cup and bob viscometer; the viscosity being continuously measured under shear at 106 s″1 for 60 seconds, at 25° C. and wherein the composition leads to little or no floc formation upon addition to water.