The instant disclosure relates to a rheological-modifying and stabilizing polymer blend, cosmetic compositions comprising the polymer blend, and methods for stabilizing, for modifying viscosity, and for treating the skin using the polymer blend or using cosmetic compositions comprising the polymer blend. The rheological-modifying and stabilizing polymer blend comprises: (i) a carbomer; (ii) acrylates/C10-30 alkyl acrylate crosspolymer; and (iii) ammonium acryloyldimethyltaurate/steareth-25 methacrylate crosspolymer.