The invention relates to a skin-disinfectant hydroalcoholic composition comprising an aliphatic alcohol with 1 to 4 carbon atoms, an opacifier selected from among styrene/acrylate copolymers, a gelling agent, and water, said composition being characterized in that the mean particle size of the opacifier is 400 nm to 500 nm and in that the viscosity of the composition is 1500 mPa/s to 4000 mPa/s.