After dyeing process, fabric has unfixed dyestuff on the surface and if it becomes final goods, it causes color migration when it is wet or during washing.
Fixing agent is to be applied to dyed fabric to fix the unfixed dyestuff on fabric.
It improves wet color fastness and fabric quality.
Making dyestuff insoluble by ionic bond between dyestuff and fixing agent
Fixing agent makes film on fabric
"Smart Dyeing Process"