Concentrated multi purpose liquid food colour for cake decoration these metallic airbrush colours can be used with 30psi or above compressor fast drying and easy to clean with hot water or alcohol you can cover a cake with a thin colour layer to painting as creative as you desire without using an airbrush for external painting do not knead into paste 1st layer will be thin after 1st layer dries you can add the 2nd for better results for covering use large brush or sponge and lightly tap