Cotton and viscose blends are very difficult to dye in to a solid shade. What is the best thing one can do to get a solid shade?

Viscose has a very high affinity towards reactive dyes when compared to cotton cellulose. If one tries to dye a solid shade out of this blend, he would certainly end up in dyeing a contrast shade, due to differential dye pick up.

A simple pad-dry-cure pretreatment with a cationic dye fixing agent, with say 4~5 gpl, would make the cotton cationized. This cationized cotton/viscose blend, when dyed with a reactive dyestuff would result in a good solid shade.

Please take a small batch trial before doing any bulk processing.