A device for restoring a light permeability of headlight lenses of motor vehicles has a holder, a working layer attached to the holder and adapted to clean and polish a surface of a headlight lense when the device is moved relative to the latter, and a sponge-like element located between the holder and the working layer and formed so that it applies an elastic biasing action to the working layer to provide a cleaning and polishing action by the working layer and at the same time to absorb a liquid required for the cleaning and polishing action.