The invention relates to a strippable aqueous nail varnish composition containing an aqueous polyurethane dispersion as a film-forming agent, characterized in that it also comprises an aqueous anionic colloidal silica dispersion containing sodium or ammonium counter-ions, preferably containing silica particles measuring between 5 and 45 nm. The presence of said colloidal silica stabilizes the polyurethane dispersion, by preventing sedimentation, particularly when the varnish composition contains pearls or glitter dust.
