Polishing involves application of gum and winding the saree onto cloth rolls. The aim is to put the stiffness in the fabric.
For handloom sarees, it is applied while it is made. After every one feet or more of weaving. The gum ( Pasai) is applied.
In Dharmavaram, instead of stiffening, the softening is done, as it is mostly zari. They also use shampoo to make it shining.
In Handloom fabrics in Dharmavaram, they use bisleri water to make it shining.