Composition (C 1 ) comprising per 100% of the weight thereof: a) - Between 90 wt.-% and 99 wt.-% water comprising, in dissolved form, between 0.02 mol/L and 1 mol/L of at least one salt (S) of ammonium cation or of a monovalent or multivalent metal cation (S) with an organic or inorganic anion, b) - Between 0.5 wt.-% and 5 wt.-% of at least one crosslinked anionic polyelectrolyte (PA) originating from polymerisation, in the presence of at least one crosslinking agent, partially or entirely salified 2-methyl 2-[(1-oxo 2-propenyl) amino] 1-propanesulfonic acid, with at least one neutral monomer chosen from N,N-dialkyl acrylamides, wherein each one of the alkyl groups comprises between one and four carbon atoms, and at least one monomer having formula (I): wherein R represents a linear or branched alkyl radical comprising from eight to twenty carbon atoms and n represents a number greater than or equal to one and less than or equal to twenty, and c) - Between 0.5 wt.-% and 5 wt.-% of at least one compound having formula (II): wherein the radical R 1 -C(=O) represents a linear or branched, saturated or unsaturated acyl radical, optionally substituted with one or more hydroxyl groups, comprising from sixteen to twenty-two carbon atoms, Z 1 , Z 2 and Z 3 , identical or different, represent either the hydrogen atom, or the radical R 1 -(C=O), x, y, z and w each represent a number greater than or equal to one and less than or equal to forty, such that the sum (S M ) = x+y+z+w is greater than or equal to four and less than or equal to forty, it is understood that in said composition (C 1 ), the molar ratio (R a ) between said crosslinked anionic polyelectrolyte (PA) and said compound having formula (II) is greater than or equal to 0.2 and less than or equal to 2.0 and the molar ratio (R b ) between the compound having formula (II) and the salt (S) is greater than or equal to 0.02 and less than or equal to 1. a) - Between 90 wt.-% and 99 wt.-% water comprising, in dissolved form, between 0.02 mol/L and 1 mol/L of at least one salt (S) of ammonium cation or of a monovalent or multivalent metal cation (S) with an organic or inorganic anion, b) - Between 0.5 wt.-% and 5 wt.-% of at least one crosslinked anionic polyelectrolyte (PA) originating from polymerisation, in the presence of at least one crosslinking agent, partially or entirely salified 2-methyl 2-[(1-oxo 2-propenyl) amino] 1-propanesulfonic acid, with at least one neutral monomer chosen from N,N-dialkyl acrylamides, wherein each one of the alkyl groups comprises between one and four carbon atoms, and at least one monomer having formula (I): wherein R represents a linear or branched alkyl radical comprising from eight to twenty carbon atoms and n represents a number greater than or equal to one and less than or equal to twenty, and c) - Between 0.5 wt.-% and 5 wt.-% of at least one compound having formula (II): wherein the radical R 1 -C(=O) represents a linear or branched, saturated or unsaturated acyl radical, optionally substituted with one or more hydroxyl groups, comprising from sixteen to twenty-two carbon atoms, Z 1 , Z 2 and Z 3 , identical or different, represent either the hydrogen atom, or the radical R 1 -(C=O), x, y, z and w each represent a number greater than or equal to one and less than or equal to forty, such that the sum (S M ) = x+y+z+w is greater than or equal to four and less than or equal to forty, it is understood that in said composition (C 1 ), the molar ratio (R a ) between said crosslinked anionic polyelectrolyte (PA) and said compound having formula (II) is greater than or equal to 0.2 and less than or equal to 2.0 and the molar ratio (R b ) between the compound having formula (II) and the salt (S) is greater than or equal to 0.02 and less than or equal to 1. <EOS>