Reduce the densitiy of our Enamel paints. Commonly used when you want to apply Humbrol Enamels via an Airbrush. Thinners is available in small and large bottles. Usage: Thinning down of solvent-based enamel paints, most commonly for airbrushing Application: As for the paint being used Drying Time: Paint drying times may vary with the addition of Enamel Thinners.