A laundry detergent formulation, comprising: a detergent surfactant, wherein the laundry detergent formulation contains 8 to 20 wt% of the surfactant and wherein the detergent surfactant is a linear C 10-20 alkylbenzenesulfonate; a builder; a filler; and an antiredeposition agent, wherein the antiredeposition agent is a polymer comprising: (a) 10 to 65 wt% of structural units of formula I wherein each R 1 and R 2 is independently selected from a hydrogen and a C 1-3 alkyl group; (b) 10 to 80 wt% of structural units of formula II wherein each R 3 is independently selected from a hydrogen and a -C CH 3 group; and (c) 10 to 65 wt% of structural units of formula III wherein each R 4 is independently selected from a hydrogen and a -CH 3 group; and wherein at least one of R 1 and R 2 is a C 1-3 alkyl group in at least 1 mol% of the structural units of formula I in the antiredeposition agent; wherein the antiredeposition agent has a lactone end group; wherein the lactone end group is a γ-lactone and wherein the antiredeposition agent has a weight average molecular weight of 1,500 to 6,000 Daltons; wherein the antiredeposition agent is according to formula IV wherein A is a polymer chain comprising the structural units of formula I, the structural units of formula II, and the structural units of formula III; wherein R 5 is methyl; and wherein R 6 is methyl; and wherein the laundry detergent formulation contains less than 0.1 wt%, based on weight of the laundry detergent formulation, of phosphate, measured as elemental phosphorus. a detergent surfactant, wherein the laundry detergent formulation contains 8 to 20 wt% of the surfactant and wherein the detergent surfactant is a linear C 10-20 alkylbenzenesulfonate; a builder; a filler; and an antiredeposition agent, wherein the antiredeposition agent is a polymer comprising: (a) 10 to 65 wt% of structural units of formula I wherein each R 1 and R 2 is independently selected from a hydrogen and a C 1-3 alkyl group; (b) 10 to 80 wt% of structural units of formula II wherein each R 3 is independently selected from a hydrogen and a -C CH 3 group; and (c) 10 to 65 wt% of structural units of formula III wherein each R 4 is independently selected from a hydrogen and a -CH 3 group; and wherein at least one of R 1 and R 2 is a C 1-3 alkyl group in at least 1 mol% of the structural units of formula I in the antiredeposition agent; wherein the antiredeposition agent has a lactone end group; wherein the lactone end group is a γ-lactone and wherein the antiredeposition agent has a weight average molecular weight of 1,500 to 6,000 Daltons; wherein the antiredeposition agent is according to formula IV wherein A is a polymer chain comprising the structural units of formula I, the structural units of formula II, and the structural units of formula III; wherein R 5 is methyl; and wherein R 6 is methyl; and wherein the laundry detergent formulation contains less than 0.1 wt%, based on weight of the laundry detergent formulation, of phosphate, measured as elemental phosphorus. (a) 10 to 65 wt% of structural units of formula I wherein each R 1 and R 2 is independently selected from a hydrogen and a C 1-3 alkyl group; (b) 10 to 80 wt% of structural units of formula II wherein each R 3 is independently selected from a hydrogen and a -C CH 3 group; and (c) 10 to 65 wt% of structural units of formula III wherein each R 4 is independently selected from a hydrogen and a -CH 3 group; and wherein at least one of R 1 and R 2 is a C 1-3 alkyl group in at least 1 mol% of the structural units of formula I in the antiredeposition agent; wherein the antiredeposition agent has a lactone end group; wherein the lactone end group is a γ-lactone and wherein the antiredeposition agent has a weight average molecular weight of 1,500 to 6,000 Daltons; wherein the antiredeposition agent is according to formula IV wherein A is a polymer chain comprising the structural units of formula I, the structural units of formula II, and the structural units of formula III; wherein R 5 is methyl; and wherein R 6 is methyl; and wherein the laundry detergent formulation contains less than 0.1 wt%, based on weight of the laundry detergent formulation, of phosphate, measured as elemental phosphorus.