After the initial printing (for the areas to be left white), the fabric is soaked in napthol. Then it is dipped in a cold dye of the lightest color, say yellow, for ten minutes. Once it is dry, it is waxed where yellow is needed and dyed in the second color, say red. This process is repeated as many times as the numbers of colors required. Three to four colors are common. There are two thumb rules. One, the subsequent color always has to be darker than the previous one. Second, always wear a glove to dip the fabric in any of the chemicals.
