How to use ceramic stains: The pigment is in a powder form and should be mixed with a suitable medium (water) in the approximate proportions of 2 parts color to 1 part medium. These can be diluted further with water for brush application, immersion or flooding. After good drying, the products should be glazed with transparent gloss or mat glaze and fire in the kiln. When using pigments in glazes, usually in concentrations of 1–10%, a little more care must be taken because some pigment systems react with materials in a glaze.