Question

_____ is not required for dyeing. Fill in the blank

Answer 1

the color substance is not required

Answer 2

The substance that is not required for dyeing is called mordant.

Now, we use direct application that has eliminated the use of mordant that was once extremely used in the dying process which was required for improving colour, intensity and hue after effect.

This effect the environment in a lot of ways which becomes the main concern.