A cosmetic or detergent composition comprising a polymeric composition, for thickening said cosmetic or detergent composition, said polymeric composition comprising a dispersion comprising at least one water-soluble polymer A at least partially enveloped by at least one enveloping polymer B, the enveloping polymer B being composed of at least one monomer of formula: wherein, * R 1, R 2, R 3 are independently selected from the group consisting of a hydrogen atom, a methyl group, a carboxylate group, and Z-X, * Z is selected from the group consisting of: - C(=O)-O; - C(=O)-O-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - C(=O)-NH; - C(=O)-NH-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - O-C(=O); - O-C(=O) -R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - NH-C(=O)-NH; - NH-C(=O)-NH-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - NH-C(=O)-O; - NH-C(=O)-O-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - a hydrocarbon chain having from 1 to 20 carbon atoms; - and a single bond, and * X is a group selected from alkanolamides, sorbitan esters, ethoxylated sorbitan esters, glyceryl esters, and polyglycosides; and wherein X further comprises a hydrocarbon chain having from 2 to 30 carbon atoms. said polymeric composition comprising a dispersion comprising at least one water-soluble polymer A at least partially enveloped by at least one enveloping polymer B, the enveloping polymer B being composed of at least one monomer of formula: wherein, * R 1, R 2, R 3 are independently selected from the group consisting of a hydrogen atom, a methyl group, a carboxylate group, and Z-X, * Z is selected from the group consisting of: - C(=O)-O; - C(=O)-O-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - C(=O)-NH; - C(=O)-NH-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - O-C(=O); - O-C(=O) -R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - NH-C(=O)-NH; - NH-C(=O)-NH-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - NH-C(=O)-O; - NH-C(=O)-O-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - a hydrocarbon chain having from 1 to 20 carbon atoms; - and a single bond, and * X is a group selected from alkanolamides, sorbitan esters, ethoxylated sorbitan esters, glyceryl esters, and polyglycosides; and wherein X further comprises a hydrocarbon chain having from 2 to 30 carbon atoms. * R 1, R 2, R 3 are independently selected from the group consisting of a hydrogen atom, a methyl group, a carboxylate group, and Z-X, * Z is selected from the group consisting of: - C(=O)-O; - C(=O)-O-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - C(=O)-NH; - C(=O)-NH-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - O-C(=O); - O-C(=O) -R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - NH-C(=O)-NH; - NH-C(=O)-NH-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - NH-C(=O)-O; - NH-C(=O)-O-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - a hydrocarbon chain having from 1 to 20 carbon atoms; - and a single bond, and - C(=O)-O; - C(=O)-O-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - C(=O)-NH; - C(=O)-NH-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - O-C(=O); - O-C(=O) -R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - NH-C(=O)-NH; - NH-C(=O)-NH-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - NH-C(=O)-O; - NH-C(=O)-O-R 4, with R 4 = a hydrocarbon chain having from 1 to 20 carbon atoms; - a hydrocarbon chain having from 1 to 20 carbon atoms; - and a single bond, and * X is a group selected from alkanolamides, sorbitan esters, ethoxylated sorbitan esters, glyceryl esters, and polyglycosides; and wherein X further comprises a hydrocarbon chain having from 2 to 30 carbon atoms.