A thin clear varnish that goes on clear and stays clear. Humbrol Clear drys to a low gloss finish, a higher gloss finish can be achieved by applying further thin coats. Usage A water-soluble, self leveling gloss medium that can be prepare painted surfaces for decals, as a gloss varnish and to improve the appearence of clear parts. Substrate Humbrol Enamel and Acrylic Paints. Application Shake well before use - some settlement may occur. Apply thinly with a brush or airbrush. To achieve a higher level of the desired finish, apply additional coats. Do not use in temperatures below 15ºC or in conditions of high humidity to avoid the appearance of a cloudy finish once dry. Drying Time Surface dry in 30 minutes. Recoat once dry. How to Clean Water.